KR20210048354A - Secondary battery electrode notching mold and notching mold manufacturing method - Google Patents

Abstract

An objective of the present invention is to provide a secondary battery electrode plate notching mold. The configuration of the present invention comprises: a lower mold (20); an upper mold (30) that is lifted from the upper part of the lower mold (20); a punch hole provided in the lower mold (20); a punch receiving hole provided in the upper mold (30); a punch accommodated in the punch receiving hole and entering the punch hole when the upper mold (30) descends to the lower mold (20); and an adjustment spacer inserted between the punch receiving hole and the punch to adjust the clearance of the punch. By using the present invention, rapid wear of the punch is prevented. Thus, the life of the punch can be extended.

Description

Secondary battery electrode notching mold and notching mold manufacturing method

The present invention relates to a notching mold and a method of manufacturing a notching mold for a secondary battery, and more particularly, a notching of a secondary battery electrode plate of a new configuration capable of quickly adjusting the clearance of a punch of a notching mold performing a notching process in a continuous conveying process of the electrode plate. It relates to a method of manufacturing a mold and a furnace mold.

A secondary battery is generally made by laminating a plurality of separators between a plurality of positive and negative plates. In the manufacturing process of the secondary battery, a secondary battery is manufactured using a reil electrode plate wound in a roll form on one winding roll (a continuous electrode plate, hereinafter referred to as an electrode plate for convenience). The electrode plate is provided with a non-coated portion and an active material coating portion exposed without an active material coating at one end by coating an active material on a thin aluminum or copper foil. While winding in the form of a roll on the side winding roll, the electrode tab is formed through a notching process. In other words, in the electrode plate 2, the active material coating portion 2A coated on both sides of the active material and the electrode plate in which the exposed uncoated portion is formed without being coated with the active material at one end (upper or lower portion) is transferred from the transfer line. A process of forming a tab (notching process) is performed, and a separator is interposed between a positive electrode plate and a negative electrode plate by winding the electrode plate on which the electrode tab is formed, or a separator is interposed between the positive electrode plate and the negative electrode plate by cutting the electrode plate into a certain area. In this way, a secondary battery is manufactured. In order to manufacture a secondary battery, a notching process of forming an electrode tab on the uncoated portion of the electrode plate by using a notching mold on the electrode plate is essentially required.

On the other hand, the electrode plate includes an aluminum plate coated with an active material and a copper plate coated with an active material, and some of the electrode plates have an active material applied to a thickness thinner or thicker than the specified thickness. Since the characteristics of the electrode plate vary depending on the copper plate, it is necessary to adjust the clearance of the punch that notches the electrode plate in the notching mold for uniform notching of the electrode plate. In addition, in the process of transferring the electrode plate toward the notching mold, if the transfer speed of the electrode plate is maintained at a speed that is low enough for smooth notching operation, the uncoated part of the electrode plate may be properly notched. However, if the speed of the electrode plate is higher than the specified speed, the electrode plate Since the uncoated portion is not properly notched and there is room for the electrode plate to be rolled in, the clearance of the punch also needs to be adjusted for smooth notching operation of the electrode plate. In this way, even if the characteristics of the electrode plate change, it is necessary to quickly respond and adjust the clearance of the punch.

There is a conventional notching mold in which a punch is inserted into a plate pocket. In other words, it is assembled by pressing a punch after pocket processing on a punch plate. See Figure 1.

However, in the case of a notching mold assembled by pressing a punch into a processed pocket of a punch plate, there is a problem in that it is not possible to adjust the clearance after the mold is manufactured. Further, there is a possibility that a lot of defects in the electrode plate occur due to the inability to adjust the clearance of the punch, and there is a problem that the life of the punch is shortened due to the rapid wear of the punch.

On the other hand, as shown in FIG. 2, there is a conventional notching mold in which a punch is fixed to a punch backing plate without using a punch plate. Initially, the punch is inserted into the die in the separated state, and then the punch is brought into close contact with the die using a setting bolt. Then, raise the upper mold and fasten the upper mold and the punch with bolts. After assembly is complete, remove the setting bolt (fastening bolt). The support bolt is used to complement the squareness of the punch. On the other hand, a bolt hole with a diameter slightly larger than the outer diameter of the bolt is formed in the punch holder, and a long hole is formed in the left and right transverse directions of the punch (the X-axis direction, which is the transfer direction of the electrode plate), and punches the punch backing plate. The clearance in the X-axis direction of the punch is adjusted by moving the bolt fixing the punch along the long hole, and the clearance of the punch is adjusted by moving the bolt fixing the punch in the Y-axis direction orthogonal to the X-axis direction of the punch along the bolt hole. It may also be configured to adjust.

However, in order to adjust the clearance of the punch, the movement distance of the punch needs to be adjusted in units of µm. There is a problem in that it is very difficult to control with. In the case of the notching mold of FIG. 2, there is a problem that it is difficult to properly adjust the clearance of the punch because there is no adjustment guide for adjusting the clearance of the punch. By unscrewing the bolt from the notching mold and pulling out the punch, it is necessary to carefully adjust whether or not the clearance of the punch is properly aligned in µm units (i.e., whether the travel distance interval of the punch is properly aligned). The task is very difficult.

On the other hand, in order to adjust the clearance of the punch, it is necessary to bring the notching mold to the place where the notching mold was manufactured, adjust the clearance of the punch, and bring it back, but there is a problem that such a period is quite long. The notching operation cannot be stopped while the punch clearance adjustment operation is completed, which is a problem in many ways.

Korean Patent Registration No. 0-1108118 (registered on January 13, 2012) Top Korean Patent Registration No. 0-1995292 (registered on June 26, 2019) Top Korean Patent Publication No. 0-2017-0055722 (published on May 22, 2017) Top Korean Patent Registration No. 0-1835710 (registered on February 28, 2018)

The present invention has been developed to solve the above-described problem, and an object of the present invention is a new method that can quickly adjust the clearance of a punch in response to the characteristics of the electrode plate in a notching mold performing the notching process in the continuous conveying process of the electrode plate. It is intended to provide a notching mold and a method of manufacturing a notching mold for a secondary battery electrode plate.

According to the present invention for solving the above problems, the lower type disposed on the transfer line of the electrode plate; An upper mold that is elevated from above the lower mold; A punch hole provided in the lower mold; A punch receiving hole provided in the upper mold; A punch accommodated in the punch receiving hole to enter the punch hole when the upper mold descends to the lower mold; There is provided a secondary battery electrode plate notching mold comprising; an adjustment spacer inserted between the punch receiving hole and the punch to adjust the clearance of the punch.

The punch hole may include an upper punch hole provided at an upper end side of the lower mold and having a tap forming guide hole; A lower punch hole provided at a lower end side of the lower mold, wherein the punch receiving hole comprises: an upper punch receiving hole facing the upper punch hole of the lower mold from above; And a lower punch receiving hole facing the lower punch hole of the lower mold from above, wherein the punch is provided with a tap forming piece that enters the tap forming guide hole of the upper punch hole, and the upper punch hole of the lower mold And an upper punch facing from above; And a lower punch facing the lower punch hole from above and an adjustment spacer inserted between the upper punch and the upper punch receiving hole, and between the lower punch and the lower punch receiving hole. It is done.

The adjustment spacer may include an X-axis first adjustment spacer and an X-axis second adjustment spacer respectively inserted between both side end portions of the upper punch and one side surface of the upper punch receiving hole and the other side surface; A Y-axis first adjustment spacer inserted between the inner end of the upper punch and the inner surface of the upper punch receiving hole; And a Y-axis second adjustment spacer inserted between the outer end of the upper punch and the outer surface of the upper punch receiving hole.

The adjustment spacer may include a Y-axis third adjustment spacer inserted between an inner end of the lower punch and an inner surface of the lower punch receiving hole; And a fourth Y-axis adjustment spacer inserted between the outer end of the lower punch and the outer surface of the lower punch receiving hole.

And a support spacer disposed between an inner end of the tap forming piece of the upper punch and an inner end of the Y-axis second adjustment spacer.

Inner ends of the upper punch and the lower punch are further provided with notched protrusions (NP) for forming a notch groove for individualization of the electrode plate.

In addition, according to the present invention, the lower type; An upper mold that is elevated from above the lower mold; A punch hole provided in the lower mold; A punch receiving hole provided in the upper mold; A punch accommodated in the punch receiving hole to enter the punch hole when the upper mold descends to the lower mold; An X-axis first adjustment spacer and an X-axis second adjustment spacer respectively inserted between both side ends of the upper punch and left and right surfaces of the upper punch receiving hole; A Y-axis first adjustment spacer inserted between the inner end of the upper punch and the inner surface of the upper punch receiving hole; A Y-axis second adjustment spacer inserted between an outer end of the upper punch and an outer surface of the upper punch receiving hole; A Y-axis third adjustment spacer inserted between the outer end of the lower punch and the outer surface of the lower punch receiving hole; A Y-axis fourth adjustment spacer inserted between the inner end of the lower punch and the inner surface of the lower punch receiving hole, wherein the upper punch includes a notched inner end and a notched outer end, and the notched inner end and the notched A first tap forming side end connected to an outer end, a tap forming inner end that is an inner end of the tap forming piece, and a second tap forming side end connected in a direction orthogonal to the tap forming inner end and the notched inner end It is configured in a shape, and as the electrode plate passes between the upper mold and the lower mold, an electrode tab is formed on a non-coated part of the electrode plate to which an active material is not applied by the upper punch, and the tap forming of the tab forming piece provided in the upper punch The reference line at which the inner end cuts the end of the uncoated part is a tap-notched midline which is an intermediate line between the inner notched reference line in an area further inward from the end of the uncoated part and an outer notched reference line in an area further outside the end of the uncoated part. And the reference line at which the first tap forming side end of the upper punch is cut in a direction orthogonal to the length direction of the uncoated part is a first inner side notched reference line in a region further inward from the first side end of the tab And a first side tap notching intermediate line, which is an intermediate line of a first external side notching reference line in a region further outside the first side end of the tab, and the second tap forming side end of the upper punch The reference line cut in the direction orthogonal to the longitudinal direction of the negative is a second inner side notched reference line in a region further inward from the second side end of the tab and a second notched reference line in a region further outside the second side end of the tab. 2 A secondary battery electrode plate notching mold is provided, characterized in that it is configured to be set to a second side tab notched middle line, which is a middle line of an outer side notched reference line.

In addition, according to the present invention, the step of coupling the adjustment spacer to the upper punch receiving hole; Coupling a punch to the punch receiving hole to be supported by the adjustment spacer; There is provided a method of manufacturing a notching mold for a secondary battery electrode plate, characterized in that it comprises a step of coupling the upper mold to the lower mold so as to be able to move up and down.

The punch hole is formed of an upper punch hole provided at the upper end side of the lower mold and having a tap forming guide hole, and a lower punch hole provided at the lower end side of the lower mold, and the punch receiving hole is formed from the upper punch hole and the upper side. It is formed of an upper punch receiving hole facing each other and a lower punch receiving hole facing the lower punch hole from above, and the adjustment spacer is between both side ends of the upper punch and one side side of the upper punch receiving hole and the other side side, respectively. A first X-axis adjustment spacer and a second X-axis adjustment spacer to be inserted, a first Y-axis adjustment spacer inserted between an inner end of the upper punch and an inner surface of the upper punch receiving hole, and an outer end of the upper punch Formed to include a Y-axis second adjustment spacer inserted between the outer surface of the upper punch receiving hole, the X-axis first adjustment spacer, the X-axis second adjustment spacer, the Y-axis first adjustment spacer, and the Y-axis 2 The adjustment spacer is bolted to the upper punch receiving hole of the upper mold, and the upper part is formed by the first adjustment spacer, the X-axis second adjustment spacer, the Y-axis first adjustment spacer, and the Y-axis second adjustment spacer. The upper punch is accommodated in the upper punch hole of the upper mold so that the inner end of the punch in the horizontal direction, the outer end in the horizontal direction, one side end in the vertical direction, and the end of the tab forming piece provided in the upper punch are supported, and the upper punch is provided by a bolt. It characterized in that it is configured to fix the punch to the upper punch hole.

The adjustment spacer is a Y-axis third adjustment spacer inserted between the inner end of the lower punch and the inner surface of the lower punch receiving hole, and a Y-axis inserted between the outer end of the lower punch and the outer surface of the lower punch receiving hole It is configured to further include a fourth adjustment spacer, wherein the Y-axis third adjustment spacer and the Y-axis fourth adjustment spacer are bolted to the lower punch receiving hole of the upper mold, and the Y-axis third adjustment spacer and the It characterized in that the lower punch is disposed in the lower punch hole so that the inner end in the transverse direction and the outer end in the transverse direction are supported by the Y-axis fourth adjustment spacer, and the lower punch is fixed to the lower punch hole by a bolt. .

A support spacer is inserted between the inner end of the tap forming piece provided in the upper punch and the inner end of the Y-axis first adjustment spacer to be fixed with a bolt.

Since the present invention is configured to adjust the clearance of the upper punch and the lower punch by using the adjustment spacers, which are the main parts, after the mold is completed, it has the effect of quickly responding to the need to adjust the clearance of the punch to adjust the clearance. . In addition, the present invention prevents a lot of defects in the electrode plate due to adjustment of the clearance between the upper punch and the lower punch, and prevents the case of rapid wear of the punch, thereby prolonging the life of the punch. There is.

1 and 2 are views schematically showing the structure of a conventional notching mold
3 is a perspective view showing the inner surface of the lower mold, which is a main part of the notching mold for a secondary battery electrode plate according to the present invention
Figure 4 is a plan view of Figure 3
5 is a perspective view showing an inner surface of an upper mold, which is a main part of a notching mold for a secondary battery electrode plate according to the present invention
6 is a plan view of FIG. 5
7 is an external perspective view of a notching mold for a secondary battery electrode plate according to the present invention
8 is a plan view schematically showing a process of forming a tab on an electrode plate by a notching mold for a secondary battery electrode plate according to the present invention
9 is a plan view showing the structure of an upper punch that is a main part of the present invention
10 is a plan view showing a process of forming a tab on an electrode plate by an upper punch shown in FIG. 9
11 is a plan view showing a state in which tabs are formed on the electrode plate by the upper punch of FIG. 10

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Objects, features, and advantages of the present invention will be more easily understood by referring to the accompanying drawings and the following detailed description. In addition, in describing the present invention, when it is determined that a detailed description of a related known configuration or function may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

In addition, in describing the constituent elements of the present invention, terms such as first, second, A, B, (a) and (b) may be used. These terms are only for distinguishing the component from other components, and the nature, order, or order of the component is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to that other component, but another component between each component It should be understood that may be “connected”, “coupled” or “connected”.

In addition, specific structural or functional descriptions in the present invention are exemplified only for the purpose of describing embodiments according to the concept of the present invention, and embodiments according to the concept of the present invention may be implemented in various forms, and the present specification or application It should not be construed as being limited to the embodiments described in.

Referring to the drawings, the present invention relates to a plurality of taps continuously on the electrode plate 2 when the re-il electrode plate (hereinafter referred to as the re-il electrode plate is referred to as the electrode plate 2 for convenience) is input from the unwinding roll of the unwinder unit into the notching mold. (2C) (electrode tabs) are formed at regular intervals. The secondary battery electrode plate notching mold of the present invention is provided in the lower mold 20, the upper mold 30 that is raised and lowered from the upper mold 20, the punch hole provided in the lower mold 20, and the upper mold 30 An adjustment to adjust the clearance of the punch by being inserted into the punch receiving hole and inserted into the punch hole when the upper mold 30 descends to the lower mold 20 by being accommodated in the punch receiving hole, and inserted between the punch receiving hole and the punch It has a spacer.

The lower mold 20 is configured in the shape of a square plate. The lower mold 20 is combined on the lower mold base plate. The lower mold base plate is fixed to the die arranged on the transfer line of the electrode plate 2, so that the lower mold 20 is fixed to the die. The lower mold 20 is provided with a punch hole. The punch hole is composed of an upper punch hole 22 and a lower punch hole 24.

The upper punch hole 22 is provided on the upper end side of the lower mold 20. The upper punch hole 22 is provided with a tap forming guide hole 22GH. The upper punch hole 22 has a shape of a square hole extending in the horizontal direction between the left and right side ends of the lower mold 20, and a tap forming guide hole 22GH is connected to one end of the upper punch hole 22. The width between the upper and lower ends of the tap forming guide hole 22GH is smaller than the width between the inner and outer surfaces of the upper punch hole 22. The tap forming guide hole 22GH has a shape of a square hole connected to one side end of the upper punch hole 22. The upper punch hole 22 and the tap forming guide hole 22GH are provided at a position further inward from the upper end of the lower mold 20. When the inner surface of the lower mold 20 is viewed from above, the tap forming guide hole 22GH is configured to be connected to the right end of the upper punch hole 22. The upper punch hole 22 and the tap forming guide hole 22GH have a hole structure elongated in the horizontal direction, which is an area between the left and right side ends of the lower mold 20. The horizontal direction of the lower mold 20 is the direction in which the electrode plate 2 moves.

The lower punch hole 24 is provided on the lower end side of the lower mold 20. The lower punch hole 24 has a shape of a square hole extending in the horizontal direction between the left and right side ends of the lower mold 20. The lower punch hole 24 is provided at a position further inward from the lower end of the lower mold 20. When the inner surface of the lower mold 20 is viewed from above, the lower punch hole 24 has a hole structure extending in the horizontal direction, which is an area between the left and right side ends of the lower mold 20.

The upper mold 30 is also configured in the shape of a square plate. It is a structure in which the upper mold 30 is combined under the upper mold base plate. A plurality of guide bushes 36 are provided on the upper base plate, and a plurality of lifting bars 26 are provided on the lower mold 20, and the guide bushes 36 are slidably coupled to the lifting bars 26. A spring (SP) is interposed between the upper mold (30) and the lower mold (20), and the upper mold (30) is maintained in a state spaced apart from the lower mold (20) by a predetermined distance by the spring (SP). The upper base plate is connected to an elevating device such as a press device, not shown, so that the upper base plate and the upper mold 30 are raised and lowered at positions facing the lower base plate and the lower mold 20, respectively, by the operation of the lifting device. do. The upper mold 30 is provided with a punch. The punch is composed of an upper punch 32 and a lower punch 34.

A punch receiving hole is provided in the upper mold 30, and a punch and an adjustment spacer are inserted into the punch receiving hole. The punch receiving hole is composed of an upper punch receiving hole 232 and a lower punch receiving hole 234, and the punch is composed of an upper punch 32 and a lower punch 34. The adjustment spacers include X-axis first adjustment spacer 41, X-axis second adjustment spacer 43, Y-axis first adjustment spacer 45, Y-axis second adjustment spacer 46, and Y-axis third adjustment spacer. (47), and a Y-axis fourth adjustment spacer (48). The adjustment spacer further includes a support spacer 49.

The upper punch receiving hole 232 is provided on the upper end side of the upper mold 30. An upper punch receiving hole 232 is provided at a position further inward from the upper end of the upper mold 30. The upper punch receiving hole 232 is disposed at a position facing the upper punch hole 22 of the lower mold 20 from above. The upper punch receiving hole 232 is formed to a predetermined depth from the inner surface of the upper mold 30 toward the outer surface. The upper punch receiving hole 232 is configured in a rectangular hole shape having a left side and a right side, an inner side and an outer side. The upper punch receiving hole 232 has a shape of a square hole opened from the inside of the upper mold 30 to the inner surface of the upper mold 30. The upper punch receiving hole 232 is formed in a rectangular hole shape extending in the horizontal direction between the left and right side ends of the lower mold 20.

The lower punch receiving hole 234 is provided on the lower end side of the upper mold 30. A lower punch receiving hole 234 is provided at a position further inward from the lower end of the upper mold 30. The lower punch receiving hole 234 is disposed at a position facing the lower punch hole 24 of the lower mold 20 from above. The lower punch receiving hole 234 is formed to a predetermined depth from the inner surface of the upper mold 30 toward the outer surface. The lower punch receiving hole 234 is configured in a rectangular hole shape having a left side and a right side, an inner side and an outer side. The lower punch receiving hole 234 has a shape of a square hole opened from the inside of the upper mold 30 to the inner surface of the upper mold 30. The lower punch receiving hole 234 is also configured in a rectangular hole shape extending in the horizontal direction between the left and right side ends of the lower mold 20, and the area of the lower punch receiving hole 234 is less than the area of the upper punch receiving hole 232 small.

The upper punch 32 includes a tap forming piece 32TF. The upper punch 32 includes a notched inner end 32A, a notched outer end 32B, a first tap forming side end 32C and the tab connected to the notched inner end 32A and the notched outer end 32B. The tap forming inner end 32D, which is an inner end of the forming piece 32TF, and a second tap forming side end 32E connected in a direction orthogonal to the tap forming inner end 32D and the notched inner end 32A, and the first It is composed of a shape including a two tap forming side end portion 32E and an end end portion 32F of the tap forming piece parallel to each other. The tap forming piece 32TF has a shape of a square block extending laterally from the second tap forming side end 32E of the upper punch 32.

The upper punch 32 is fixed by entering the upper punch receiving hole 232 of the upper mold 30. A bolt fastening hole is formed in the upper mold 30, and a head receiving groove is formed in the upper punch 32 to a certain depth from the inner surface toward the outer surface, and a stepped portion is formed in the head receiving groove, and the stepped portion A bolt insertion hole is formed that has a certain depth toward the outer surface of the upper punch 32 of the upper mold 30, and the bolt is inserted into the bolt insertion hole, and the head of the bolt is a head receiving groove inside the upper punch 32. When the bolt is tightened into the bolt fastening hole of the upper mold 30 in a state so that it enters, the head of the bolt presses the stepped portion inside the head receiving groove so that the upper punch 32 becomes the upper punch receiving hole of the upper mold 30 It can be fixed at (232). In this way, the upper punch 32 can be detachably coupled to the upper punch receiving hole 232 of the upper mold 30 by bolts.

At this time, the diameter of the bolt insertion hole inside the upper punch 32 is configured to be larger than the diameter of the bolt. The diameter of the bolt insertion hole is larger in units of µm than the diameter of the bolt.

Since the diameter of the bolt insertion hole of the upper punch 32 is larger than the diameter of the bolt, the upper punch 32 is polarized by the first X-axis adjustment spacer 41 and the second X-axis adjustment spacer 43. When adjusting the clearance by moving it in the transverse direction (ie, the X-axis direction), which is the transport direction of (2), the upper punch 32 is moved in the transverse direction based on the bolt, so the clearance in the X-axis direction of the upper punch 32 Can be adjusted, and the Y-axis first adjustment spacer 45 and the Y-axis second adjustment spacer 46 allow the upper punch 32 to be moved in the Y-axis direction orthogonal to the transverse direction, which is the transfer direction of the electrode plate 2. When the upper punch 32 is moved to and adjusts the clearance, the upper punch 32 is moved in the Y-axis direction based on the bolt, so that the clearance in the Y-axis direction of the upper punch 32 can be adjusted.

In addition, the upper punch 32 is provided with a tab forming piece 32TF extending in the horizontal direction from one end. When the upper mold 30 descends toward the lower mold 20, the upper punch 32 and the tap forming piece 32TF enter the upper punch hole 22 and the tap forming guide hole 22GH formed in the lower mold 20, respectively. do. In addition, a notched protrusion NP for forming a notch groove for individualization of the electrode plate 2 is further provided at an inner end of the upper punch 32. The inner end of the upper punch 32 is an end that cuts the uncoated portion 2B of the electrode plate 2 and a notched protrusion NP is provided at the inner end of the upper punch 32. The notched protrusion NP protrudes toward the inner end of the lower punch 34 to be described later from an inner end adjacent to a side end opposite to the end to which the tap forming piece 32TF of the upper punch 32 is connected. The notched protrusion NP of the upper punch 32 protrudes in a direction orthogonal to the conveying direction of the electrode plate 2. The notched protrusion NP of the upper punch 32 may have a wedge shape.

The upper punch 32 is configured in a bar-shaped punch shape extending in the horizontal direction of the upper mold 30. The upper punch 32 is disposed in a transverse direction parallel to the transfer direction of the electrode plate 2.

The first X-axis adjustment spacer 41 and the second X-axis adjustment spacer 43 are inserted between both side ends of the upper punch 32 and the upper punch receiving hole 232. The first X-axis adjustment spacer 41 and the second X-axis adjustment spacer 43 have a bar shape. The first X-axis adjustment spacer 41 is inserted between the first tap forming side end 32C of the upper punch 32 and one side side of the upper punch receiving hole 232, and the second X-axis The adjustment spacer 43 is inserted between the end end 32F of the tap forming piece 32TF of the upper punch 32 and the other side side of the upper punch receiving hole 232. The first X-axis adjustment spacer 41 and the second X-axis adjustment spacer 43 may be detachably coupled to the upper punch receiving hole 232 of the upper mold 30 by a fixing means such as a bolt.

In addition, the Y-axis first adjustment spacer 45 is inserted between the inner end of the upper punch 32 and the inner surface of the upper punch receiving hole 232, and the outer end of the upper punch 32 and the upper punch receiving hole Between the outer surfaces of the 232, the Y-axis second adjustment spacer 46 is inserted. The first Y-axis adjustment spacer 45 and the second Y-axis adjustment spacer 46 have a bar shape extending along the horizontal direction of the upper punch 32. The first Y-axis adjustment spacer 45 and the second Y-axis adjustment spacer 46 may be detachably coupled to the upper punch receiving hole 232 of the upper mold 30 by a fixing means such as a bolt.

Meanwhile, a support spacer 49 is inserted between an inner end of the tap forming piece 32TF of the upper punch 32 and an inner end of the first Y-axis adjustment spacer 45. The support spacer 49 is inserted into the space formed by the tap forming piece 32TF and the Y-axis first adjustment spacer 45. The support spacer 49 may also be detachably coupled to the upper punch receiving hole 232 of the upper mold 30 by a fixing means such as a bolt.

The lower punch 34 has an inner end and an outer end, and a left end and a right end of both sides connected to the notched inner end 32A and the notched outer end 32B.

The lower punch 34 is fixed by entering the lower punch receiving hole 234 of the upper mold 30. A bolt fastening hole is formed in the upper mold 30, and a head receiving groove is formed in the lower punch 34 to a certain depth from the inner surface toward the outer surface, and a stepped portion is formed in the head receiving groove, and the stepped portion A bolt insertion hole is formed that has a certain depth toward the outer surface of the lower punch 34 of the upper mold 30, and the bolt is inserted into the bolt insertion hole, and the head of the bolt is a head receiving groove inside the lower punch 34. When the bolt is tightened into the bolt fastening hole of the upper mold 30 in the state so that it enters, the head of the bolt presses the stepped portion inside the head receiving groove so that the lower punch 34 becomes the lower punch receiving hole of the upper mold 30 It can be fixed at (234). In this way, the lower punch 34 can be detachably coupled to the lower punch receiving hole 234 of the upper mold 30 by bolts.

At this time, the diameter of the bolt insertion hole inside the lower punch 34 is configured to be larger than the diameter of the bolt. The diameter of the bolt insertion hole is larger in units of µm than the diameter of the bolt.

Since the diameter of the bolt insertion hole of the lower punch 34 is larger than the diameter of the bolt, the lower punch 32 is polarized by the third Y-axis adjustment spacer 47 and the seventh Y-axis adjustment spacer 48. When the clearance is adjusted by moving it in the Y-axis direction, which is a direction perpendicular to the transverse direction of (2), the lower punch 34 is moved in the Y-axis direction based on the bolt, so the Y-axis of the lower punch 34 Directional clearance can be adjusted.

The lower punch 34 is configured in a bar-shaped punch shape extending in the horizontal direction of the upper mold 30. The lower punch 34 is disposed in a transverse direction parallel to the transfer direction of the electrode plate 2.

In addition, when the upper mold 30 descends toward the lower mold 20, the lower punch 34 enters the lower punch hole 24 formed in the lower mold 20. In addition, a notched protrusion NP for forming a notch groove for individualization of the electrode plate 2 is further provided at an inner end of the lower punch 34. The inner end of the lower punch 34 is an end that cuts the active material coating part 2A of the electrode plate 2 and a part of the lower end side of the electrode plate 2, and a notched protrusion NP is formed at the inner end of the lower punch 34 It is equipped. The notched protrusion NP of the lower punch 34 protrudes in a direction orthogonal to the conveying direction of the electrode plate 2. The notched protrusion NP of the lower punch 34 is disposed at a position facing the notched protrusion NP protruding from the inner end of the upper punch 32. The notched protrusion NP of the lower punch 34 may have a wedge shape.

A third Y-axis adjustment spacer 47 is inserted between the inner end of the lower punch 34 (the inner end in the horizontal direction) and the inner surface of the lower punch receiving hole 234 (the inner surface in the horizontal direction), and the lower punch ( A fourth Y-axis adjustment spacer 48 is inserted between the outer end of 34) (the outer end in the horizontal direction) and the outer surface of the lower punch receiving hole 234 (the outer side in the horizontal direction). The Y-axis third adjustment spacer 47 and the Y-axis fourth adjustment spacer 48 have a bar shape extending along the horizontal direction of the lower punch 34. The Y-axis third adjustment spacer 47 and the Y-axis fourth adjustment spacer 48 may be detachably coupled to the lower punch receiving hole 234 of the upper mold 30 by fixing means such as bolts.

On the other hand, in the present invention, coupling an adjustment spacer to the punch receiving hole of the upper mold 30, coupling a punch to the punch receiving hole so as to be supported by the adjustment spacer, and the upper mold 30 to the lower mold 20 There is provided a method of manufacturing a notching mold for a secondary battery electrode plate including the step of coupling so as to be elevated.

Hereinafter, a process of manufacturing the notching mold of the present invention will be described.

The punch hole is provided at the upper end side of the lower mold 20 and includes an upper punch hole 22 having a tap forming guide hole 22GH, and a lower punch hole 24 provided at the lower end side of the lower mold 20. To form. The upper punch hole 22 has a rectangular hole shape and is configured to have a tap forming guide hole 22GH extending from one end to the side.

The punch receiving hole is formed of an upper punch receiving hole 232 facing the upper punch hole 22 from above, and a lower punch receiving hole 234 facing the lower punch hole 24 from above. The upper punch receiving hole 232 and the lower punch receiving hole 234 are formed in a square hole shape.

The adjustment spacer is formed to include an X-axis first adjustment spacer 41, an X-axis second adjustment spacer 43, a Y-axis first adjustment spacer 45, and a Y-axis second adjustment spacer 46.

The first X-axis adjustment spacer in the upper punch receiving hole 232 so that the outer side of the first X-axis adjustment spacer 41 faces on one side of the upper punch receiving hole 232 formed in the upper mold 30 ( 41) is disposed, and then the first X-axis adjustment spacer 41 is bolted to the upper punch receiving hole 232.

X-axis second adjustment spacer in the upper punch receiving hole 232 so that the outer side of the second X-axis adjustment spacer 43 faces on the other side of the upper punch receiving hole 232 formed in the upper mold 30 After arranging 43, the second X-axis adjustment spacer 43 is fixed to the upper punch receiving hole 232 with bolts. Then, the first X-axis adjustment spacer 41 and the second X-axis adjustment spacer 43 are arranged side by side and at the same time are arranged in the Y-axis direction of the upper mold 30.

The first Y-axis adjustment spacer 45 is disposed in the upper punch receiving hole 232 so that the outer end of the first Y-axis adjustment spacer 45 faces the inner side of the upper punch receiving hole 232, and then the The first Y-axis adjustment spacer 45 is fixed to the upper punch receiving hole 232 with bolts. The first Y-axis adjustment spacer 45 is disposed in an X-axis direction orthogonal to the first X-axis adjustment spacer 41 and the second X-axis adjustment spacer 43.

The second Y-axis adjustment spacer 46 is disposed in the upper punch receiving hole 232 so that the outer end of the second Y-axis adjustment spacer 46 faces on the outer surface of the upper punch receiving hole 232, and the The second Y-axis adjustment spacer 46 is fixed to the upper punch receiving hole 232 with bolts. The second Y-axis adjustment spacer 46 is disposed in an X-axis direction orthogonal to the first X-axis adjustment spacer 41 and the second X-axis adjustment spacer 43. The first Y-axis adjustment spacer 45 and the second Y-axis adjustment spacer 46 are arranged parallel to each other.

One side end and an outer end of the support spacer 49 contact the inner side of the first X-axis adjustment spacer 41 and the inner end of the Y-axis first adjustment spacer 45 in the upper punch receiving hole 232. The support spacer 49 is disposed in the upper punch receiving hole 232 so that the support spacer 49 is fixed to the upper punch receiving hole 232 by bolts. The support spacers 49 are arranged in the X-axis direction of the upper mold 30. The support spacer 49 is disposed in a direction parallel to the first X-axis adjustment spacer 41. A tab forming piece 32TF insertion space is formed between the support spacer 49 and the inner end and the inner end of the Y-axis second adjustment spacer 46.

In the inner region of the first X-axis adjustment spacer 41, the second X-axis adjustment spacer 43, the first Y-axis adjustment spacer 45, the second Y-axis adjustment spacer 46, and the support spacer 49 The upper punch 32 is inserted and disposed in the formed upper punch insertion space. The tab forming piece 32TF of the upper punch 32 is inserted into the insertion space of the tab forming piece 32TF.

Then, the X-axis first adjustment spacer 41 and the X-axis second adjustment spacer ( 43), a Y-axis first adjustment spacer 45 inserted between an inner end of the upper punch 32 and an inner surface of the upper punch receiving hole 232, and an outer end of the upper punch 32 Formed to include the Y-axis second adjustment spacer 46 inserted between the outer surface of the upper punch receiving hole 232, the X-axis first adjustment spacer 41 and the X-axis second adjustment spacer 43 and The first Y-axis adjustment spacer 45 and the second Y-axis adjustment spacer 46 are bolted to the upper punch receiving hole 232 of the upper mold 30, and the first adjustment spacer and the second X-axis adjustment The spacer 43, the first Y-axis adjustment spacer 45, and the second Y-axis adjustment spacer 46 allow the inner end of the upper punch 32 in the horizontal direction, the outer end in the horizontal direction, and one side end in the vertical direction, and the upper part. The upper punch 32 is accommodated in the upper punch hole 22 of the upper mold 30 so that the end end of the tap forming piece 32TF provided in the punch 32 is supported, and the upper punch 32 is placed on the upper part by a bolt. It is fixed to the punch hole (22).

The X-axis first adjustment spacer 41, the X-axis second adjustment spacer 43, the Y-axis first adjustment spacer 45, the Y-axis second adjustment spacer 46, and the support spacer 49 are upper mold (30). ) First and fixed in the upper punch receiving hole 232 of the upper punch (32), the first X-axis adjustment spacer 41 and the second X-axis adjustment spacer 43 and the Y-axis first adjustment, respectively The upper punch 32 is fixed to the upper punch receiving hole 232 of the upper mold 30 by bolts while being supported by the spacer 45, the second Y-axis adjustment spacer 46, and the support spacer 49. .

The adjustment spacer is formed to further include a Y-axis third adjustment spacer 47 and a Y-axis fourth adjustment spacer 48.

The third Y-axis adjustment spacer 47 is disposed in the lower punch receiving hole 234 so that the outer end of the third Y-axis adjustment spacer 47 faces the inner side of the lower punch receiving hole 234, and then the The third Y-axis adjustment spacer 47 is fixed to the lower punch receiving hole 234 with bolts. The Y-axis third adjustment spacer 47 is disposed in the X-axis direction of the upper mold 30.

The Y-axis fourth adjustment spacer 48 is disposed in the lower punch receiving hole 234 so that the outer end of the Y-axis fourth adjustment spacer 48 faces the outer surface of the lower punch receiving hole 234, and then the The Y-axis fourth adjustment spacer 48 is fixed to the lower punch receiving hole 234 with bolts. The Y-axis fourth adjustment spacer 48 is disposed in the X-axis direction of the upper mold 30. The Y-axis third adjustment spacer 47 and the Y-axis fourth adjustment spacer 48 are arranged parallel to each other.

The lower punch 34 is inserted and disposed in the lower punch insertion space formed in the inner region of the Y-axis third adjustment spacer 47 and the Y-axis fourth adjustment spacer 48. Then, both side ends of the lower punch 34 are supported by being in contact with both side sides of the lower punch receiving hole 234, while the Y-axis third adjustment spacer 47 and the Y-axis fourth adjustment spacer 48 The inner end and the outer end of the lower punch 34 are in contact with each other on the inner side facing each other to be in a supported state. In this state, the lower punch 34 is fixed to the lower punch receiving hole 234 of the upper mold 30 with bolts.

The Y-axis third adjustment spacer 47 and the Y-axis fourth adjustment spacer 48 are first arranged and fixed in the lower punch receiving hole 234 of the upper mold 30, and the periphery of the lower punch 34 is Y In a state supported by the third shaft adjustment spacer 47 and the Y-axis fourth adjustment spacer 48, the lower punch 34 is fixed to the lower punch receiving hole 234 of the upper mold 30 by bolts.

The upper mold 30 is disposed above the lower mold 20, and the upper mold 30 is coupled to be elevating at a position facing the lower mold 20. The upper mold 30 is provided with a guide bush 36, and the lower mold 20 is provided with a guide bar 26, and the guide bush 36 is coupled to move along the guide bar 26 so that the lower mold 20 Combined so that the upper mold 30 is raised and lowered from the upper side facing the ).

A notching operation is performed on the electrode plate 2 by the notching mold of the present invention. When the electrode plate 2 passes at a specified speed between the upper mold 30 and the lower mold 20, the upper mold 30 is repeatedly elevated above the lower mold 20, and the uncoated portion of the electrode plate 2 by the upper punch 32 ( 2B) is cut to form a tab (electrode tab), and by cutting the lower end opposite to the end where the tab of the electrode plate 2 is formed by the lower punch 34 to a certain height, tap the electrode plate 2 at regular intervals. To form. On the other hand, by the upper and lower notched protrusions (NP) protruding in a direction facing each other of the upper punch 32 and the lower punch 34, a pair of upper and lower ends of the electrode plate 2 with tabs facing up and down. Individualization of the electrode plate (2) When a notch groove is formed and the electrode plate (2) on which the tab is formed is transferred past the upper mold (30) and the lower mold (20), a pair of upper and lower electrode plates (2) are individualized by a cutter not shown. By cutting the part of the virtual cutting line that forgets between the reference notch grooves, one individual electrode plate 2 is made.

At this time, in the present invention, an adjustment spacer is disposed at the periphery of the upper punch 32, so when it is necessary to adjust the clearance of the upper punch 32, the clearance is adjusted using the adjustment spacer, and the circumference of the lower punch 34 Since the adjustment spacer is also arranged in the portion, the clearance can be adjusted using the adjustment spacer even when it is necessary to adjust the clearance of the lower punch 34. It is a key feature of the present invention that the clearance of the upper punch 32 and the lower punch 34 can be adjusted by the adjustment spacer.

Hereinafter, a process of adjusting the clearance of the upper punch 32 and the lower punch 34 by the adjustment spacer, which is a main part, will be described.

Each of the left and right positions of the upper punch 32, that is, between both side ends of the upper punch 32 and one side side and the other side side of the upper punch receiving hole 232 of the upper mold 30 The first adjustment spacer 41 and the X-axis second adjustment spacer 43 are disposed.

When it is desired to adjust the clearance of the upper punch 32 by moving it to the left along the X-axis direction, which is the transverse direction of the upper punch 32 (that is, a direction parallel to the transfer direction of the electrode plate 2), it is arranged before adjustment. The first X-axis adjustment spacer 41 and the second X-axis adjustment spacer 43 are lifted out.

Next, a new standard X-axis first adjustment spacer 41 having a relatively smaller left and right width compared to the left and right widths of the first X-axis adjustment spacer 41 disposed before the clearance adjustment is removed from the X-axis prior to the clearance adjustment. A new standard X-axis second adjustment spacer 43 that is inserted into the position where the 1 adjustment spacer 41 was and has a relatively larger left and right width compared to the left and right widths of the X-axis second adjustment spacer 43 before clearance adjustment. Is inserted into the position where the X-axis second adjustment spacer 43 was before clearance adjustment. That is, the new standard X-axis first adjustment spacer 41 and X-axis first adjustment spacer 41 are placed at both side ends of the upper punch 32 and one side of the upper punch receiving hole 232 of the upper mold 30. Place it by inserting it between the side and the other side.

Then, the upper punch 32 can be shifted to the left along the X-axis direction, which is the horizontal direction, and in this state, the upper punch 32 is fixed to the upper punch receiving hole 232 of the upper mold 30 When the new standard X-axis first adjustment spacer 41 and X-axis second adjustment spacer 43 are also fixed to the upper punch receiving hole 232 of the upper mold 30, the clearance in the X-axis direction of the upper punch 32 is reduced. Can be adjusted.

For example, initially, the left and right widths of the left and right X-axis first adjustment spacers 41 and X-axis second adjustment spacers 43 are each 10 mm in the upper punch receiving hole 232 of the upper mold 30, but notching work When it is necessary to adjust the clearance by moving 1㎛ to the left of the upper punch 32 in the X-axis direction, the first X-axis adjustment spacer 41 on the left is made of the X-axis with a width of 9.9999mm (10mm-0.0001mm). Replaced with 1 adjustment spacer 41, and the X-axis second adjustment spacer 43 on the right side is replaced with 10.0001mm (10mm + 0.0001mm) in the left and right widths and placed on the left and right sides of the upper punch 32, and the upper mold (30) ) In the upper punch receiving hole 232 of the upper punch 32, the X-axis first adjusting spacer 41 and the X-axis second adjusting spacer 43 replaced with the upper punch 32 are fixed, the upper punch 32 is By moving by 1 μm to the left in the direction, the clearance adjustment in the horizontal direction of the upper punch 32 is completed.

In addition, for example, initially, the left and right widths of the left and right X-axis first adjustment spacers 41 and X-axis second adjustment spacers 43 in the upper punch receiving hole 232 of the upper mold 30 are 10 mm, respectively, When it is necessary to adjust the clearance by moving 2㎛ to the left of the upper punch 32 in the X-axis direction while performing the notching operation, the first X-axis spacer 41 on the left has a width of 9.9998mm (10mm-0.0002mm). The first axis adjustment spacer 41 is replaced, and the right side X axis second adjustment spacer 43 is replaced with 10.0002mm (10mm + 0.0002mm) in the left and right width, and is placed on the left and right sides of the upper punch 32. When fixing the first X-axis adjustment spacer 41 and the second X-axis adjustment spacer 43 replaced with the upper punch 32 in the upper punch receiving hole 232 of 30, the upper punch 32 By moving by 2 mu m to the left in the X-axis direction, the clearance adjustment in the horizontal direction of the upper punch 32 is completed.

At this time, the support spacer 49 may be replaced with a support spacer 49 of a standard that matches the standard X-axis first adjustment spacer 41 and the X-axis second adjustment spacer 43 used for clearance adjustment. When the upper punch 32 is moved to the left and the clearance is adjusted, it is replaced with a new standard support spacer 49 that has a larger left and right width compared to the left and right width of the support spacer 49 installed before clearance adjustment. do.

On the other hand, when you want to adjust the clearance of the upper punch 32 by moving the upper punch 32 to the right along the X-axis direction, which is the transverse direction (that is, a direction parallel to the transfer direction of the electrode plate 2), before the clearance adjustment The arranged X-axis first adjustment spacer 41 and X-axis second adjustment spacer 43 are lifted out.

Next, a new standard X-axis first adjustment spacer 41 having a relatively larger left and right width compared to the left and right widths of the first X-axis adjustment spacer 41 disposed before clearance adjustment is removed from the X-axis prior to clearance adjustment. 1 A new standard X-axis second adjustment spacer that is inserted in the position where the adjustment spacer 41 was and has a relatively smaller left and right width compared to the left and right widths of the X-axis second adjustment spacer 43 disposed before clearance adjustment. Insert (43) into the position where the X-axis second adjustment spacer 43 was located before clearance adjustment. That is, the new standard X-axis first adjustment spacer 41 and X-axis second adjustment spacer 43 are placed at both side ends of the upper punch 32 and one side of the upper punch receiving hole 232 of the upper mold 30. Place it by inserting it between the side and the other side.

Then, the upper punch 32 is shifted to the right along the horizontal X-axis direction, and in this state, the upper punch 32 is fixed to the upper punch receiving hole 232 of the upper mold 30 And if the new standard X-axis first adjustment spacer 41 and X-axis second adjustment spacer 43 are also fixed to the upper punch receiving hole 232 of the upper mold 30, the clearance in the X-axis direction of the upper punch 32 Can be adjusted.

For example, initially, the left and right widths of the left and right X-axis first adjustment spacers 41 and X-axis second adjustment spacers 43 are each 10 mm in the upper punch receiving hole 232 of the upper mold 30, but notching work When it is necessary to adjust the clearance by moving the upper punch 32 to the right in the X-axis direction, the first X-axis adjustment spacer 41 on the left is made of the X-axis with a width of 10.0001mm (10mm + 0.0001mm). Replaced with the 1st adjustment spacer 41, and the X-axis second adjustment spacer 43 on the right side was replaced with the X-axis second adjustment spacer 43 with a width of 9.9999mm (10mm-0.0001mm) on the right side, and the upper punch 32 ), and then in the upper punch receiving hole 232 of the upper mold 30, the first X-axis adjustment spacer 41 and the second X-axis adjustment spacer 43 replaced with the upper punch 32 are placed. When fixed, the upper punch 32 moves to the right in the X-axis direction by 1 μm, thereby completing the adjustment of the clearance in the horizontal direction (X-axis direction) of the upper punch 32.

At this time, the support spacer 49 may be replaced with a support spacer 49 of a standard that matches the standard X-axis first adjustment spacer 41 and the X-axis second adjustment spacer 43 used for clearance adjustment. When the upper punch 32 is moved to the right and the clearance is adjusted, it is replaced with a new standard support spacer 49 that has a smaller left and right width compared to the left and right width of the support spacer 49 installed before clearance adjustment. do.

In addition, the Y-axis first adjustment spacer 45 is inserted between the inner end (inner end in the horizontal direction) of the upper punch 32 and the inner surface (inner surface in the horizontal direction) of the upper punch receiving hole 232, A second Y-axis adjustment spacer 46 is inserted between the outer end of the punch 32 (the outer end in the horizontal direction) and the outer surface of the upper punch receiving hole 232.

Clearance of the upper punch 32 by moving the upper punch 32 in a direction closer to the lower punch 34 along the Y-axis direction, which is a vertical direction (that is, a direction perpendicular to the transfer direction of the electrode plate 2). When you want to adjust the clearance, take out the Y-axis first adjustment spacer 45 and the Y-axis second adjustment spacer 46, which were placed before clearance adjustment, and remove the new standard Y-axis first adjustment spacer 45 and Y-axis. 2 The adjustment spacer 46 is placed between the inner end of the upper punch 32 and the inner surface of the upper punch receiving hole 232 and between the outer end of the upper punch 32 and the outer surface of the upper punch receiving hole 232. Insert and place. That is, the Y-axis first adjustment spacer 45 of a new standard whose height is relatively smaller than the height of the upper and lower ends of the Y-axis first adjustment spacer 45 disposed before the clearance adjustment is Y before clearance adjustment. A new standard Y-axis whose upper and lower ends are relatively taller than the height of the upper and lower ends of the second adjusting spacer 46, which is inserted into the position where the first adjusting spacer 45 was located and placed before clearance adjustment. The second adjustment spacer 46 is inserted into the position where the Y-axis second adjustment spacer 46 was before clearance adjustment.

Then, the upper punch 32 can be shifted to a position closer to the lower punch 34 along the vertical Y-axis direction, and in this state, the upper punch receiving hole 232 of the upper mold 30 If fixed and the new standard Y-axis first adjustment spacer 45 and Y-axis second adjustment spacer 46 are also fixed to the upper punch receiving hole 232 of the upper mold 30, the Y-axis direction of the upper punch 32 Clearance can be adjusted.

For example, the height of the upper and lower ends of the first Y-axis adjustment spacer 45 and the second Y-axis adjustment spacer 46 fixed in the upper punch receiving hole 232 of the upper mold 30 is 10 mm, respectively, and notched. When it is necessary to adjust the clearance by moving 1㎛ upwards in the Y-axis direction of the upper punch 32 (that is, the direction closer to the lower punch 34), the first Y-axis adjustment spacer that was placed before the clearance adjustment (45) is replaced with the Y-axis first adjustment spacer 45 with a height of 9.9999mm (10mm-0.0001mm) at the upper and lower ends, and the second Y-axis adjustment spacer 46, which was placed before the clearance adjustment, is the height of the upper and lower ends. Replaced with a Y-axis second adjustment space of 10.0001mm (10mm + 0.0001mm) and placed in the upper and lower portions of the upper punch 32, and then, the upper punch 32 in the upper punch receiving hole 232 of the upper mold 30. ) And the replaced Y-axis first adjustment spacer 45 and Y-axis second adjustment spacer 46 are fixed, the upper punch 32 moves upward in the Y-axis direction (the direction closer to the lower punch 34). By moving by 1 mu m, the clearance adjustment in the vertical direction (Y-axis direction) of the upper punch 32 is completed.

At this time, the support spacer 49 may be replaced with a support spacer 49 of a standard suitable for the standard Y-axis first adjustment spacer 45 and the Y-axis second adjustment spacer 46 used for clearance adjustment. When the clearance is adjusted by moving the upper punch 32 closer to the lower punch 34, the height of the upper and lower ends is smaller than the height of the upper and lower ends of the support spacers 49 installed before clearance adjustment. Replace it with a support spacer (49) and install it.

In addition, when it is desired to adjust the clearance of the upper punch 32 by moving the upper punch 32 in a direction further away from the lower punch 34 along the vertical Y-axis direction, the Y-axis disposed before the clearance adjustment Take out the first adjustment spacer 45 and the Y-axis second adjustment spacer 46, and insert the new standard Y-axis first adjustment spacer 45 and the Y-axis second adjustment spacer 46 to the inside of the upper punch 32. Inserted and disposed between the end and the inner surface of the upper punch receiving hole 232 and between the outer end of the upper punch 32 and the outer surface of the upper punch receiving hole 232, respectively. In other words, the Y-axis first adjustment spacer 45 of the new standard, which has a relatively higher upper and lower end height than the height of the upper and lower ends of the Y-axis first adjustment spacer 45 disposed before the clearance adjustment, is used before the clearance adjustment. A new standard Y-axis whose upper and lower ends are relatively smaller than the height of the upper and lower ends of the second adjusting spacer 46, which is inserted into the position where the first adjustment spacer 45 was located and placed before clearance adjustment. The second adjustment spacer 46 is inserted into the position where the Y-axis second adjustment spacer 46 was before clearance adjustment.

Then, the upper punch 32 can be shifted to a position further away from the lower punch 34 along the vertical Y-axis direction, and in this state, the upper punch receiving hole 232 of the upper mold 30 If fixed and the new standard Y-axis first adjustment spacer 45 and Y-axis second adjustment spacer 46 are also fixed to the upper punch receiving hole 232 of the upper mold 30, the Y-axis direction of the upper punch 32 Clearance can be adjusted.

For example, the upper and lower Y-axis first adjustment spacers 45 and Y-axis second adjustment spacers 46 have a width of 10 mm, respectively, in the upper punch receiving hole 232 of the upper mold 30, respectively, Meanwhile, when it is necessary to adjust the clearance by moving 1㎛ downward in the Y-axis direction of the upper punch 32 (that is, the direction away from the lower punch 34), the inner Y-axis first adjustment spacer 45 is at the upper and lower ends. Replace the Y-axis first adjustment spacer 45 with a height of 10.0001mm (10mm + 0.0001mm), and the outer Y-axis second adjustment spacer 46 with a height of 9.9999mm (10mm-0.0001mm) at the upper and lower ends. And the upper punch 32 and the replaced Y-axis first adjustment spacer 45 and Y-axis second adjustment spacer in the upper punch receiving hole 232 of the upper mold 30 by placing the upper and lower portions of the upper punch 32 When (46) is fixed, the upper punch 32 moves downward by 1 μm in the Y-axis direction (the direction away from the lower punch 34), thereby adjusting the vertical direction (Y-axis direction) clearance of the upper punch 32 This is done.

At this time, the support spacer 49 may be replaced with a support spacer 49 of a standard suitable for the standard Y-axis first adjustment spacer 45 and the Y-axis second adjustment spacer 46 used for clearance adjustment. When the clearance is adjusted by moving the upper punch 32 in a direction away from the lower punch 34, the support of the new standard has a higher upper and lower end height than the upper and lower ends of the support spacer 49 installed before clearance adjustment. Replace it with the spacer 49 and install it.

Further, in the present invention, the clearance in the Y-axis direction of the lower punch 34 can also be adjusted. A third Y-axis adjustment spacer 47 is inserted between the inner end of the lower punch 34 (the inner end in the horizontal direction) and the inner surface of the lower punch receiving hole 234 (the inner surface in the horizontal direction), and the lower punch The Y-axis fourth adjustment spacer 48 is inserted between the outer end of 34 (the outer end in the horizontal direction) and the outer surface of the lower punch receiving hole 234 (the outer surface in the horizontal direction).

Clearance of the lower punch 34 by moving the lower punch 34 in a direction closer to the upper punch 32 along the Y-axis direction, which is a vertical direction (that is, a direction perpendicular to the transfer direction of the electrode plate 2). When the adjustment is to be made, the Y-axis third adjustment spacer 47 and the Y-axis fourth adjustment spacer 48 disposed before clearance adjustment are lifted out.

Next, the Y-axis third adjustment spacer 47, which has a relatively smaller height between the upper and lower ends compared to the height between the upper and lower ends of the Y-axis third adjustment spacer 47 disposed before the clearance adjustment, is placed before the clearance adjustment. Inserted in the place where the Y-axis third adjustment spacer 47 was located, and the height between the upper and lower ends is larger than the height between the upper and lower ends of the Y-axis fourth adjustment spacer 48 disposed before the clearance adjustment. The fourth Y-axis adjustment spacer 48 is inserted into the position where the fourth Y-axis adjustment spacer 48 was before clearance adjustment. That is, the new standard Y-axis third adjustment spacer 47 and Y-axis fourth adjustment spacer 48 are inserted between the inner end of the lower punch 34 and the inner surface of the lower punch receiving hole 234, and the lower punch 34 ) And disposed between the outer ends of the lower punch receiving holes 234 and respectively.

Then, the lower punch 34 can be shifted to a position closer to the upper punch 32 along the vertical Y-axis direction, and in this state, the lower punch receiving hole 234 of the upper mold 30 If the lower punch 34 is fixed and the new standard Y-axis third adjustment spacer 47 and Y-axis fourth adjustment spacer 48 are also fixed to the lower punch receiving hole 234 of the upper mold 30, the lower punch ( 34) Y-axis clearance can be adjusted. The clearance of the lower punch 34 can be adjusted by the distance DY3 indicated in the drawing.

For example, initially, the left and right widths of the upper and lower Y-axis third adjustment spacers 47 and Y-axis fourth adjustment spacers 48 in the lower punch receiving hole 234 of the upper mold 30 are 10 mm, respectively, and the notching operation is performed. Meanwhile, when it is necessary to adjust the clearance by moving 1㎛ upwards in the Y-axis direction of the lower punch 34 (that is, the direction closer to the upper punch 32), the third Y-axis adjustment spacer 47 on the outside is placed at the upper and lower ends. Replace with the Y-axis 3rd adjustment spacer (47) with a height of 9.9999mm (10mm-0.0001mm), and the inner Y-axis 4th adjustment spacer (48) with a height of 10.0001mm (10mm + 0.0001mm) at the upper and lower ends. And the lower punch 34 and the newly replaced Y-axis third adjustment spacer 47 and Y-axis fourth adjustment spacer in the lower punch receiving hole 234 of the upper mold 30 by being disposed at the upper and lower portions of the lower punch 34 When (48) is fixed, the lower punch 34 moves upward by 1 μm in the Y-axis direction (the direction closer to the upper punch 32), so that the clearance adjustment in the vertical direction (Y-axis direction) of the lower punch 34 is possible. It is completed.

In addition, when it is desired to adjust the clearance of the lower punch 34 by moving the lower punch 34 in a direction further away from the upper punch 32 along the vertical Y axis direction, the Y axis disposed before the clearance adjustment The third adjustment spacer 47 and the Y-axis fourth adjustment spacer 48 are lifted out.

Next, compared to the height between the upper and lower ends of the Y-axis third adjustment spacer 47 disposed before the clearance adjustment, the Y-axis third adjustment spacer 47, which has a higher height between the upper and lower ends, is used before the clearance adjustment. The height between the upper and lower ends is relatively smaller than the height between the upper and lower ends of the Y-axis fourth adjustment spacer 48, which was inserted into the place where the third Y-axis adjustment spacer 47 was located, and placed before the clearance adjustment. The fourth Y-axis adjustment spacer 48 is inserted into the position where the fourth Y-axis adjustment spacer 48 was before clearance adjustment. That is, the new standard Y-axis third adjustment spacer 47 and Y-axis fourth adjustment spacer 48 are inserted between the inner end of the lower punch 34 and the inner surface of the lower punch receiving hole 234, and the lower punch 34 ) And disposed between the outer ends of the lower punch receiving holes 234 and respectively.

Then, the lower punch 34 can be shifted to a position further away from the upper punch 32 along the vertical Y-axis direction, and in this state, the lower punch receiving hole 234 of the upper mold 30 If fixed and the new standard Y-axis third adjustment spacer 47 and Y-axis fourth adjustment spacer 48 are also fixed to the lower punch receiving hole 234 of the upper mold 30, the Y-axis direction of the lower punch 34 Clearance can be adjusted. The clearance of the lower punch 34 can be adjusted by the distance DY4 indicated in the drawing.

For example, initially, the left and right widths of the upper and lower Y-axis third adjustment spacers 47 and Y-axis fourth adjustment spacers 48 in the lower punch receiving hole 234 of the upper mold 30 are 10 mm, respectively, and the notching operation is performed. Meanwhile, when it is necessary to adjust the clearance by moving 1㎛ downward in the Y-axis direction of the lower punch 34 (that is, the direction away from the upper punch 32), the outer Y-axis third adjustment spacer 47 has the upper and lower widths. This 10.0001mm (10mm + 0.0001mm) Y-axis third adjustment spacer 47 is replaced, and the inner Y-axis fourth adjustment spacer 48 is replaced with 9.9999mm (10mm-0.0001mm) in the left and right widths. The third Y-axis adjustment spacer 47 and the Y-axis fourth adjustment spacer 48, which are replaced with the lower punch 34, are placed in the upper and lower parts of the punch 34 and are placed in the lower punch receiving hole 234 of the upper mold 30. When fixed, the lower punch 34 moves in a downward direction in the Y-axis direction (a direction away from the upper punch 32) by 1 μm, thereby completing the clearance adjustment in the vertical direction (Y-axis direction) of the lower punch 34.

Accordingly, the present invention can adjust the clearance of the upper punch 32 and the lower punch 34 by using the above-described adjustment spacers after the mold is completed. Furthermore, by adjusting the clearances of the upper punch 32 and the lower punch 34, it prevents the possibility of a lot of defects in the electrode plate 2, and prevents the case of rapid wear of the punch, thereby prolonging the life of the punch. There is a losing effect.

In addition, in the present invention, since only the adjustment spacer of a new standard needs to be replaced in order to adjust the clearance of the punch, the operation of adjusting the clearance of the punch in µm units is very quick and easy and has an effect. In the case of the present invention, since the adjustment spacers function as an adjustment guide for adjusting the clearance of the punch, the clearance of the punch can be properly adjusted very quickly. Unlike conventional notching molds, it is necessary to carefully adjust whether or not the clearance of the punch is properly aligned in µm units by loosening the bolt from the notching mold and pulling out the punch (i.e., whether the movement distance interval of the punch is properly aligned). Since there is no need to simply replace the adjustment spacers according to the standard, the fine clearance adjustment of the punch is performed very quickly and easily.

In addition, in the case of the present invention, it is not necessary to bring the notching mold to the place where the notching mold was manufactured to adjust the clearance of the punch, adjust the clearance of the punch, and bring it back, and the clearance of the punch can be adjusted in quick response. It solved the problem that took quite a long time to take the notching mold outside and adjust the clearance of the punch.

In addition, in the present invention, the X-axis first adjustment spacer 41, the X-axis second adjustment spacer 43, the Y-axis first adjustment spacer 45, the Y-axis second adjustment spacer 46, and the support spacer 49 The upper punch 32 is placed in the upper punch receiving hole 232 of the upper mold 30 and fixed to the upper punch 32 in a state where the circumference of the upper punch 32 is firmly supported by the adjustment spacers, and the upper punch 32 is attached to a fastener such as a bolt. As a result, the upper punch 32 is fixed to the upper punch receiving hole 232 of the upper mold 30, so that the position of the upper punch 32 is not changed and the position of the upper punch 32 is accurately aligned in the process of fixing the upper punch 32 to the upper mold 30. There is a sustained effect. The notching precision of the electrode plate 2 can be reliably increased by the upper punch 32.

In addition, in the present invention, the Y-axis third adjustment spacer 47 and the Y-axis fourth adjustment spacer 48 are also first arranged and fixed in the lower punch receiving hole 234 of the upper mold 30 to fix the circumference of the lower punch 34. Since the lower punch 34 is fixed to the lower punch receiving hole 234 of the upper mold 30 by a fixture such as a bolt while the part is firmly supported by the adjustment spacers, the lower punch 34 is fixed to the upper mold ( In the process of fixing to 30), the position of the lower punch 34 is not changed and the position of the lower punch 34 is maintained so that the position is precisely aligned.

Meanwhile, the Y-axis second adjustment spacer 46 is larger than the depth of the upper punch receiving hole 232 of the upper mold 30 so that the Y-axis second adjustment spacer 46 is outside the upper punch receiving hole 232. Since the upper punch 32 is supported in a more protruding state, when the upper punch 32 is pushed in the clearance range during the notching operation, the Y-axis second adjustment spacer 46 further protrudes the upper punch 32 Is supported more stably by

In addition, the Y-axis fourth adjustment spacer 48 is also larger than the depth of the lower punch receiving hole 234 of the upper mold 30 so that the Y-axis fourth adjustment spacer 48 is outside the lower punch receiving hole 234. Since the lower punch 34 is supported in a more protruding state, the lower punch 34 is further protruded when the lower punch 34 is pushed in the clearance range during the notching operation. Is supported more stably by

On the other hand, in the present invention, the upper punch 32 includes a notched inner end 32A, a notched outer end 32B, and a first tap forming side end connected to the notched inner end 32A and the notched outer end 32B ( 32C) and a tap forming inner end 32D that is an inner end of the tap forming piece 32TF, and a second tap forming side end connected in a direction orthogonal to the tap forming inner end 32D and the notched inner end 32A ( 32E), wherein the electrode plate 2 passes between the upper mold 30 and the lower mold 20, and the non-coated portion 2B to which the active material is not applied from the electrode plate 2 by the upper punch 32 An electrode tab is formed on the.

At this time, the reference line (first cutting reference line) at which the tap forming inner end 32D of the tap forming piece 32TF provided in the upper punch 32 cuts the end portion of the uncoated portion 2B is the uncoated portion 2B ), the inner notched reference line 112 in the region further inward from the end (2CEE) of the uncoated portion 2B and the tab notched midline ( 110), and the reference line at which the first tap forming side end 32C of the upper punch 32 cuts in a direction orthogonal to the length direction of the uncoated portion 2B (second cutting reference line) is the first of the tab The first inner side notched reference line 122 in the region further inward from the side end (2CFE) and the first outer side notched reference line 124 in the region further outside the first side end (2CFE) of the tab. A reference line that is set as the first side tap-notched middle line 120, which is an intermediate line, and cuts the second tap forming side end 32E of the upper punch 32 in a direction perpendicular to the length direction of the uncoated portion 2B ( The third cutting reference line) is further outward from the second inner side notched reference line 132 and the second side end (2CSE) of the tab (2CSE) in the region further inward from the second side end (2CSE) of the tab (2). It is configured to set as the second side tap notched middle line 130 which is the middle line of the second outer side notched reference line 134 in the region of. In the present invention, the first cutting reference line, the second cutting reference line, and the third cutting reference line are the X-axis first adjustment spacer 41, the X-axis second adjustment spacer 43, and the Y-axis first adjustment spacer 45, and It is configured to be set using the Y-axis second adjustment spacer (46). The clearance adjustment of the upper punch 32 and the X-axis first adjustment spacer 41, the X-axis second adjustment spacer 43, the Y-axis first adjustment spacer 45, and the Y-axis second adjustment spacer ( 46).

As described above, the reference line at which the tap forming inner end 32D of the tap forming piece 32TF provided in the upper punch 32 cuts the end of the uncoated portion 2B is referred to as the tap-notched intermediate line 110 (first cut). Reference line), and when a tab 2C is formed in the uncoated portion 2B of the electrode plate 2, the notched inner end 32A of the upper punch 32 becomes the uncoated portion 2B in the electrode plate 2 Inner uncoated part cutting reference line 142 and active material coating at a position where the uncoated part length cutting reference line 140, which is the reference line for cutting, further enters the inside of the active material coating part 2A, which is the area where the active material is applied on the electrode plate 2 It is set to a position where the portion of the uncoated length cut reference line 140, which is the midline of the external uncoated part cutting reference line 144 in the area further outward from the part 2A, is automatically cut, and by the upper punch 32 It has the effect of being able to automatically and precisely adjust the height of the tab 2C formed by notching the electrode plate 2.

In addition, a reference line in which the first tap forming side end portion 32C of the upper punch 32 cuts in a direction orthogonal to the length direction of the uncoated portion 2B is set as a second cutting reference line, and the upper punch 32 When the reference line at which the second tap forming side end portion 32E of is cut in a direction orthogonal to the length direction of the uncoated portion 2B is set as the third cutting reference line, the electrode plate 2 is notched by the upper punch 32 The left and right widths of the formed tab 2C can also be automatically and precisely aligned.

In the above, specific embodiments of the present invention have been described above. However, the spirit and scope of the present invention is not limited to these specific embodiments, and various modifications and variations are possible within the scope of not changing the subject matter of the present invention. Anyone who has it will understand.

Therefore, the embodiments described above are provided to completely inform the scope of the invention to those of ordinary skill in the technical field to which the present invention belongs, and should be understood as illustrative and non-limiting in all respects, The invention is only defined by the scope of the claims.

2. Electrode plate 2A. Active material coating part
2B. Ignorance 2C. Tab
2CFE. First side end 2CSE. 2nd side end
20. Lower type 22. Upper punch hole
22GH. Tap forming guide hole 30. Upper type
32. Upper punch 32TF. Tap forming
32A. Notched inner end 32B. Notched outer end
32C. First tap forming side end 32D. Tap forming inner end
32E. Second tap forming side end 32F. End end of tap forming piece
34. Lower punch 36. Guide bush
41. X-axis first adjustment spacer 43. X-axis second adjustment spacer
45. Y-axis first adjustment spacer 46. Y-axis second adjustment spacer
47. Y-axis 3rd adjustment spacer 48. Y-axis 4th adjustment spacer
49. Support spacer 110. Tab notched midline
112. Inner notched baseline 114. Outer notched baseline
122. First inner side notched reference line 122. First outer side notched reference line
120. First side tap notched midline 132. Second inner side notched reference line
134. Second outer side notched reference line 130. Second side tap notched midline
140. Midline of cutting the length of the uncoated part 142. Baseline of cutting the internal uncoated part
144. Reference line for cutting the outer uncoated part 232. Upper punch receiving hole
234. Lower punch receiving hole

Claims (11)

A lower mold 20 disposed on the conveying line of the electrode plate 2;
An upper mold 30 that is elevated from above the lower mold 20;
A punch hole provided in the lower mold 20;
A punch receiving hole provided in the upper mold 30;
A punch that is accommodated in the punch receiving hole and enters the punch hole when the upper mold 30 descends to the lower mold 20;
A secondary battery electrode plate notching mold comprising: an adjustment spacer inserted between the punch receiving hole and the punch to adjust the clearance of the punch.
The method of claim 1,
The punch hole,
An upper punch hole 22 provided on the upper end side of the lower mold 20 and having a tap forming guide hole 22GH;
Consists of including; a lower punch hole 24 provided on the lower end side of the lower mold 20,
The punch receiving hole,
An upper punch receiving hole 232 facing the upper punch hole 22 of the lower mold 20 from above;
Consists of including; a lower punch receiving hole 234 facing from the upper side of the lower punch hole 24 of the lower mold 20,
The punch,
The upper punch 32 facing the upper punch hole 22 of the lower mold 20 from above is provided with a tap forming piece 32TF entering the tab forming guide hole 22GH of the upper punch hole 22 ;
Consists of including; the lower punch hole 24 of the lower mold 20 and the lower punch 34 facing from above,
Secondary battery electrode plate notching mold, characterized in that an adjustment spacer is inserted between the upper punch (32) and the upper punch receiving hole (232), and between the lower punch (34) and the lower punch receiving hole (234).
The method of claim 2,
The adjustment spacer,
Y-axis first adjustment spacer 45 inserted between the inner end of the upper punch 32 and the inner surface of the upper punch receiving hole 232;
Secondary battery electrode plate notching mold comprising a; Y-axis second adjustment spacer (46) inserted between the outer end of the upper punch (32) and the outer surface of the upper punch receiving hole (232).
The method of claim 2,
An X-axis first adjustment spacer 41 and an X-axis second adjustment spacer 43 respectively inserted between both side ends of the upper punch 32 and one side and the other side of the upper punch receiving hole 232 ); Secondary battery electrode plate notching mold, characterized in that it is configured to include.
The method of claim 2,
The adjustment spacer,
A Y-axis third adjustment spacer 47 inserted between the inner end of the lower punch 34 and the inner surface of the lower punch receiving hole 234;
A secondary battery electrode plate notching mold further comprising: a fourth Y-axis adjustment spacer 48 inserted between the outer end of the lower punch 34 and the outer surface of the lower punch receiving hole 234.
The method of claim 2,
And a support spacer (49) disposed between an inner end of the tap forming piece (32TF) of the upper punch (32) and an inner end of the Y-axis second adjustment spacer (46); Secondary battery electrode plate notching mold.
The method of claim 1,
The electrode plate notching mold of a secondary battery, characterized in that a notching protrusion (NP) for forming a notch groove for individualization of the electrode plate 2 is further provided at inner ends of the upper punch 32 and the lower punch 34.
Coupling the adjustment spacer to the punch receiving hole of the upper mold 30;
Coupling a punch to the punch receiving hole to be supported by the adjustment spacer;
A method of manufacturing a notching mold for a secondary battery electrode plate, comprising: coupling the upper mold 30 to the lower mold 20 so as to be elevated.
The method of claim 8,
The punch hole is provided at the upper end side of the lower mold 20 and has an upper punch hole 22 having a tap forming guide hole 22GH, and a lower punch hole 24 provided at the lower end side of the lower mold 20 And the punch receiving hole includes an upper punch receiving hole 232 facing the upper punch hole 22 and a lower punch receiving hole 234 facing the lower punch hole 24 from above. And the adjustment spacer includes a first Y-axis adjustment spacer 45 inserted between an inner end of the upper punch 32 and an inner surface of the upper punch receiving hole 232, and the upper punch 32 Formed to include a Y-axis second adjustment spacer 46 inserted between the outer end and the outer surface of the upper punch receiving hole 232, the X-axis first adjustment spacer 41 and the X-axis second adjustment spacer (43) and the Y-axis first adjustment spacer 45 and the Y-axis second adjustment spacer 46 are bolted to the upper punch receiving hole 232 of the upper mold 30, and the first adjustment A spacer and an X-axis second adjustment spacer 43, the Y-axis first adjustment spacer 45, and the Y-axis second adjustment spacer 46 are used to form an inner end of the upper punch 32 in the horizontal direction and an outer side in the horizontal direction. The upper punch 32 is accommodated in the upper punch hole 22 of the upper mold 30 so that the end and one side end in the vertical direction and the end of the tab forming piece 32TF provided in the upper punch 32 are supported. And fixing the upper punch (32) to the upper punch hole (22) by a bolt.
The method of claim 8,
The adjustment spacer includes a third Y-axis adjustment spacer 47 inserted between an inner end of the lower punch 34 and an inner surface of the lower punch receiving hole 234, and an outer end of the lower punch 34 Y-axis fourth adjustment spacer 48 inserted between the outer surface of the lower punch receiving hole 234, and both side ends of the upper punch 32 and one side side of the upper punch receiving hole 232 X-axis first adjustment spacer 41 and X-axis second adjustment spacer 43 respectively inserted between the side sides, and the Y-axis third adjustment spacer 47 and the Y-axis fourth adjustment The spacer 48 is bolted to the lower punch receiving hole 234 of the upper mold 30, and the Y-axis third adjustment spacer 47 and the Y-axis fourth adjustment spacer 48 are used in a horizontal direction. The lower punch 34 is disposed in the lower punch hole 24 so that the inner end and the outer end in the horizontal direction are supported, and the lower punch 34 is fixed to the lower punch hole 24 by a bolt. Secondary battery electrode plate notching mold manufacturing method.
The method of claim 9,
A support spacer 49 is inserted between the inner end of the tap forming piece 32TF provided in the upper punch 32 and the inner end of the Y-axis first adjustment spacer 45 to be fixed with a bolt. Secondary battery electrode plate notching mold manufacturing method.

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