KR101937170B1 - Knuckle press device - Google Patents

Abstract

The present invention relates to a knuckle press device which comprises: a lower link in which a lower end portion is pin-combined with an upper end portion of a slider to be slid up and down together with the slider; an upper link which has an upper end portion pin-combined with a frame to be able to rotate, and forms a link connection part in which a lower end portion is pin-combined with an upper end portion of the lower link; a linear driving device which linearly reciprocates in a state in which a front end portion is coupled to the link connection part, moves the link connection part in an arc shape, and rotates along an arc movement trajectory of the link connection part; a pressing member which is installed on the slider, pressurizes a workpiece, and molds the workpiece; a support member which is installed to face the pressing member, is installed to be able to ascend and descend toward the pressing member, and is seated with a workpiece; a support cylinder which changes relative speeds and stroke distances of the slider and the pressing member while lifting and lowering the supporting member; a separation part which is installed in the molding groove part of the supporting member, and separates the workpieces from the molding groove part after the workpiece is molded; and a controller which controls the linear driving device, the slider, the supporting cylinder, and the separation part.

Description

Knuckle press device {KNUCKLE PRESS DEVICE}

The present invention relates to a knuckle press apparatus, and more particularly, to a knuckle press apparatus capable of easily adjusting a descending speed and a rising speed of a slide based on a point of capability generation while sufficiently exhibiting a lowering force necessary for molding a product, To a knuckle press apparatus capable of maximizing a range in which a falling speed and a rising speed of a slide are varied.

In general, knuckle presses are widely used as presses for precision compression processing, embossing, extrusion, forging, etc., because the upper mold is softly contacted with the lower mold for a long time during molding of the product in a mechanical press.

A knuckle press is also referred to as a toggle press, and includes a frame, a slider that is vertically movable on the frame, and a drive device that generates and applies a driving force to move the slider up and down.

The driving device includes an electric motor installed in the frame, a flywheel connected to the electric motor and the belt, a connecting rod having one end connected to the frying wheel, and a link mechanism connected to the other end of the connecting rod.

The link mechanism is provided in the space inside the frame corresponding to the upper side of the slider. An electric motor, a freewheel, and the like are disposed in the upward direction or the lateral direction of the link mechanism and the link mechanism is rotated by the driving force applied from the motor. And is lifted and lowered.

The conventional knuckle press includes a drive gear that is rotated by engagement with a pinion of a flywheel, a connecting rod eccentrically coupled to the drive gear, and a link mechanism in which an upper end of the connecting rod is pin-coupled.

The link mechanism includes a first support pin attached to the frame, a bell crank rotatably supported on the first support pin and having an upper arm and a lower arm, an intermediate link connected to the lower arm of the bell crank, And a side link connected to a lower end of the intermediate link and an upper end of the lower link.

The drive device constructed in this way lifts the slide by the link movement of the link mechanism including the bell crank, the intermediate link, the lower link, and the side link by the power transmitted in the order of the flywheel, the pinion, the drive gear and the connecting rod.

However, in the conventional knuckle press, since the drive unit such as the motor and the fly wheel, which are components of high load, are disposed on one side of the frame so as to protrude in parallel with the side plate, the knuckle press is concentrated on one side of the overall load of the equipment.

If the load of the knuckle press is unevenly distributed in one side as described above, fine vibrations are caused when the slider is lowered, resulting in poor molding of the molded article.

Particularly, the conventional knuckle presses are operated in a downward stroke in all driving mechanisms such as a flywheel, a pinion, a driving gear, a connecting rod, a bell crank, an intermediate link, a lower link, a side link, The vibration is very severe and the molding quality is deteriorated. Such vibration causes abrasion and damage of the connecting portion and failure of the various accessories and electric devices, so that the durability is remarkably lowered.

In addition, since the conventional knuckle press driving apparatus has the bell crank, the intermediate link, the lower link, and the side link arranged in a straight line along the height direction of the frame, there is a disadvantage that the knuckle press has a high overall height. As the number of components increases, it leads to an increase in volume, weight, and size, which leads to an increase in the amount of material required for manufacturing, which leads to an increase in material cost and manufacturing labor cost. In addition, the cost of transportation, installation and maintenance And so on.

In order to solve the above problems, a knuckle press driving device has been developed. The driving device according to the related art includes a link mechanism configured to lift a slider on a frame, and a power transmitting mechanism for transmitting a driving force applied from the motor to the link mechanism In the driving device of the knuckle press equipped with the transmission mechanism, the power transmitting mechanism includes a flywheel which is rotated by the rotational force applied from the electric motor, a crankshaft which is coupled to the inner center of the flywheel and rotated by the rotational force, The link mechanism includes a movable hinge shaft provided at the other end of the connecting rod, an upper link connected to a lower side of the movable hinge shaft, an upper link connected to the movable hinge shaft at the upper side, A lower link connected to the lancer, a pair of sliding blocks connected to both ends of the movable hinge shaft, A bellows link connected to the upper side of the upper link and a bellows device hermetically coupled to an upper portion of the bellows link to perform a buffering action, .

BACKGROUND ART [0002] The background art of the present invention is disclosed in Korean Patent Registration No. 10-1362394 (published on Feb. 21, 2014, entitled "Knuckle Fleece Driving Apparatus").

Since the knuckle press according to the prior art can not easily change the descending speed, the ascending speed and the stroke length of the slider, when the shape of the product to be formed by the press work is changed, the descending speed, the ascending speed and the stroke There is a problem in that the parts of the knuckle press apparatus must be replaced in order to change the length.

In addition, the conventional knuckle press has a problem that it is difficult to produce various products because the range in which the descending speed, the ascending speed and the stroke length of the slider can be varied is not large.

Therefore, there is a need for improvement.

The present invention can easily adjust the descending speed and the ascending speed of the slide based on the point of capability generation while sufficiently exhibiting the lowering force necessary for forming the product while the structure is simple and the range in which the descending speed and the ascending speed of the slide are changed And a knuckle press apparatus capable of maximizing the knuckle press apparatus.

According to the present invention, there is provided a slide fastener comprising: a lower link having a lower end pin-coupled to an upper end of a slider and sliding up and down together with the slider; An upper link rotatably connected to the frame by a pin, and a lower link forming a link connection pin-coupled with an upper end of the lower link; A linear driving device provided so as to be rotatable in accordance with an arc motion locus of the link connecting portion while reciprocally moving the link connecting portion in a linear reciprocating manner with the leading end pinned to the link connecting portion; A pressing member which is provided on the slider and which pressurizes and forms a workpiece; A support member which is installed to be opposed to the pressing member and is capable of being raised and lowered to the pressing member side, on which the workpiece is placed; A supporting cylinder for varying a relative speed and a stroke distance of the slider and the pressing member while lifting the supporting member; A depressing portion provided in a molding groove portion of the support member and engaged with the pressing member and the support member to separate the workpiece from the molding groove portion after molding the workpiece; And a controller for controlling the linear driving device, the slider, the supporting cylinder, and the de-rejecting.

The slider of the present invention is characterized by comprising a hydraulic cylinder which raises and lowers the pressing member and increases or decreases a descending speed and a stroke length of the slider and transmits the pressing force to the pressing member.

Further, in the present invention, the rejection may include: a rotating body installed in a working space formed in the molding groove; A motor installed on the support member to provide power to the rotating body; A driving shaft connecting the motor and the rotating body to transmit the power of the motor to the rotating body; And a protrusion formed to protrude from the rotating body and protrude outside the molding groove through the operating hole of the molding groove when the motor is driven, and press the workpiece to the outside of the molding groove.

The knuckle press apparatus according to the present invention can lift the slider while rotating the upper link and the lower link while the pair of hydraulic cylinder apparatuses are driven, so that the structure is simple and the necessary load can be sufficiently exhibited. It is possible to control the descent and ascending speed of the slide of the slide.

In addition, since the knuckle press apparatus according to the present invention exhibits a required load and is linearly driven, the speed of the slide can be freely changed, and the stroke length can be easily changed.

A knuckle press apparatus according to the present invention is a knuckle press apparatus comprising a support member on which a workpiece is placed and a pressing member that presses the workpiece to press the workpiece so that the pressing member can be raised and lowered while the pressing member and the support member are moved up and down by a hydraulic cylinder The elevation movement of the slider and the elevation movement of the pressing member and the support member serve as relative movements, and the magnitude of the load applied to the workpiece can be variously adjusted.

1 is a view illustrating a knuckle press apparatus according to an embodiment of the present invention.
2 is a perspective view illustrating a support member and a support cylinder of a knuckle press apparatus according to an embodiment of the present invention.
3 is a cross-sectional view illustrating a support member and a detaching unit of the knuckle press apparatus according to an embodiment of the present invention.
4 is an operational state diagram illustrating a knuckle press apparatus according to an embodiment of the present invention.
5 is a perspective view illustrating a connection structure of a hydraulic cylinder apparatus of a knuckle press apparatus according to an embodiment of the present invention.
6 is a movement diagram showing a movement path of a knuckle press apparatus according to an embodiment of the present invention.

Hereinafter, an embodiment of a knuckle press apparatus according to the present invention will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

Therefore, definitions of these terms should be made based on the contents throughout this specification.

2 is a perspective view illustrating a support member and a support cylinder of a knuckle press apparatus according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view of a knuckle press apparatus according to an embodiment of the present invention. Sectional view of a support member and a detaching unit of a knuckle press apparatus according to an embodiment of the present invention.

5 is a perspective view illustrating a connection structure of a hydraulic cylinder apparatus of a knuckle press apparatus according to an embodiment of the present invention, and FIG. 5 is a perspective view illustrating a connection structure of a hydraulic cylinder apparatus of a knuckle press apparatus according to an embodiment of the present invention, 6 is a movement diagram showing a movement path of a knuckle press apparatus according to an embodiment of the present invention.

1 to 6, a knuckle press apparatus according to an embodiment of the present invention includes a pair of hydraulic cylinder apparatuses as a linear driving apparatus symmetrically to the left and right, and a lower end portion thereof is coupled to an upper end portion of a slider, A lower link 100 rotatably pivotally coupled to the frame at an upper end thereof and a link link 150 connected to the upper end of the lower link 100 in a pin- And a pair of pairs of linking portions 150 provided in a rotatable manner along the locus of circular movement of the link connecting portion 150 while reciprocally moving the link connecting portion 150 in a linear reciprocating manner with the leading end pin- A controller 400 for controlling the pair of hydraulic cylinder units 300 and 300 'and a controller 400 for controlling the pair of hydraulic cylinder units 300 and 300' Member 500, A supporting member 700 which is installed so as to oppose the pressing member 500 and on which the workpiece is placed; a supporting member 700 which supports the supporting member 700 so as to be able to move up and down in the same or opposite direction as the moving direction of the pressing member 500; And a support cylinder 710 that varies the relative speed and stroke distance of the pressing member 500 while being moved.

The piston rod 350 of the hydraulic cylinder apparatus 300 disposed on the right side of FIG. 1 is in the contracted state, and the piston rod 350 'of the hydraulic cylinder apparatus 300' disposed on the left side is in the maximally extended state .

In the hydraulic cylinder device shown in Fig. 1, the hydraulic cylinder device on the right side is referred to as a first hydraulic cylinder device and the left side thereof is referred to as a second hydraulic cylinder device, and the same constitution provided in each hydraulic cylinder device is divided into first and second Let's name it.

The state shown in Fig. 1 shows a state in which the slider S is located at the top dead center.

The hydraulic cylinder devices 300 and 300 'are provided so as to be rotatable about the pivot shafts 310 and 310' in the X axis direction. Since the link connecting portion 150 moves along the arc locus, It must be able to meet.

The pair of hydraulic cylinder devices 300 and 300 'are provided so as to be symmetrical to each other, and one stroke of the slider means one reciprocating motion by up, down, down and up.

The knuckle presses of the linear drive type according to the present embodiment are provided with a pair of hydraulic cylinder devices (one on the left and one on the right).

For example, assuming that the first piston rod of the first hydraulic cylinder apparatus is contracted and the second piston rod of the second hydraulic cylinder apparatus is maximally extended as shown in Fig. 1, 150) is located at point A11.

The link connecting portion 150 is configured such that the piston rod 350 of the first hydraulic cylinder apparatus 300 is extended and the piston rod 350 'of the second hydraulic cylinder apparatus 300' is contracted, , And the link connecting portion 150 when the slider S is at the bottom dead center is located at the lowest point (the point at which the tangent line is horizontal in the arc locus) at point A41.

The positions of the slider S corresponding to the respective points of the link connecting portion 150 are B1, B2, B3 and B4, B1 is the top dead center of the slider, and B4 is the bottom dead center.

Subsequently, the piston rod 350 of the first hydraulic cylinder apparatus 300 is extended, and the piston rod 350 'of the second hydraulic cylinder apparatus 300' continues to contract, passing through the point A32 and A22, And the slider S rises to B1, which is the top dead center, through B3 and B2.

That is, when the left and right hydraulic cylinder apparatuses complete one stroke by one way, the slider S descends and continuously reaches the top dead center through the bottom dead center, so that the slider S performs one stroke.

This is because the link connecting portion 150 is continuously moved without changing the direction while the slider S performs one full stroke, so that the kneading machine is smoothly moved without shock at the bottom dead point compared with the knuckle press using one hydraulic cylinder device do.

Conversely, a description will be given of a path in which the link connection unit 150 is located at the upper left of A12 and then moved to the opposite side of A11.

The link connecting portion 150 at the point A12 is moved to the position where the piston rod 350 'of the second hydraulic cylinder apparatus 300' is extended and the piston rod 350 of the first hydraulic cylinder apparatus 300 is contracted, And the link connection portion 150 when the slider S is at the bottom dead center is located at the point A41 which is the lowermost portion (the point at which the tangent line is horizontal in the arc locus).

The positions of the slider S corresponding to the respective points of the link connecting portion 150 are B1, B2, B3 and B4, B1 is the top dead center of the slider, and B4 is the bottom dead center.

Thereafter, the piston rod 350 'of the second hydraulic cylinder apparatus 300' is extended and the piston rod 350 of the first hydraulic cylinder apparatus 300 is continuously contracted and passes through the point A31 and A21 to A11 And the slider S rises to B1, which is the top dead center, through B3 and B2.

As described above, when the left and right hydraulic cylinder apparatuses complete one stroke by one way, the slider S descends and continuously reaches the top dead center via the bottom dead center, so that the slider S performs one stroke .

As a result, when the pair of hydraulic cylinder devices 300 and 300 'extend and contract by one time, the slider S performs two strokes.

The supporting member 700 can be raised so that the bottom dead center of the slider S can be lowered without causing the bottom dead center of the slider S to be lowered, The distance between the support member 700 and the slider S is shortened while the second rod 712 is projected from the support cylinder 710 supporting the slider S so that the lowering point of the slider S is lowered, .

Therefore, the groove portion formed in the workpiece becomes deeper, and the backlash phenomenon generated after the press work is reduced, so that a clearer shape can be formed on the workpiece.

A support member 700 is provided at an upper end of the second rod 712 that is projected and retracted from the support cylinder 710 and a second hydraulic line (Not shown).

Since the slider S of this embodiment includes the hydraulic cylinder that moves the pressing member 500 up and down and increases or decreases the descending speed and the stroke length of the slider S to transmit the pressing member 500 to the pressing member 500, And the support member 700 installed opposite to the pressing member 500 is lifted and lowered by the supporting cylinder 710 so that the pressing force of the pressing member 500 is transmitted to the pressing member 500, The lift speed and the stroke length can be variously adjusted.

The hydraulic cylinder constituting the slider S is provided with a first rod 510 projecting downward and a pressing member 500 provided at a lower end of the first rod 510. The upper rod The first hydraulic line 514 is provided to provide hydraulic pressure for moving the pressing member 500 up and down.

The lowering speed and stroke length of the pressing member 500 can be variously controlled by controlling the hydraulic cylinders constituting the slider S and the hydraulic pressure supplied to the supporting cylinder 710 as described above, When the type of the object is changed, the operator controls the controller to supply the hydraulic pressure to the first hydraulic line 514 and the second hydraulic line 714 when the slider S descends, so that the lowering speed of the pressing member 500 It is possible to adjust the shape of the groove formed in the workpiece while adjusting the stroke length to various depths.

Hereinafter, a method of controlling the hydraulic cylinder apparatuses 300 and 300 'used in the present embodiment will be described.

The control of each hydraulic cylinder apparatus controls the flow rate of the hydraulic fluid flowing into and out of the hydraulic cylinder through the controller 400.

Each hydraulic cylinder apparatus is provided with an on-off valve for communicating or interrupting the inside of the cylinder and the oil tank. The forward oil supply opening and the back oil return opening for introducing the high-pressure oil through a pump (not shown) (Not shown) for drawing the piston rod at the time when the piston rod is contracted (contracted).

Here, the control of the opening / closing valves of the respective cylinder devices of the controller controls only the opening and closing operations and the timing thereof, and only when there is a gradient of the pressure in the oil tank and the cylinder, Respectively.

Therefore, the driving force of the hydraulic cylinder apparatuses of the present embodiment is generated by the high-pressure oil flowing through the pump, and does not obtain any driving force by the oil flowing through the opening / closing valve.

Since the piston rod of the hydraulic cylinder contracts or elongates to raise and lower the slider and the molded product is subjected to plastic working by the lowering force of the slider, the hydraulic cylinder .

However, in this embodiment, since the hydraulic cylinder device is provided on both sides, a necessary force of the slider at the capability generating point is exerted by the resultant force generated by the hydraulic cylinders on both sides.

For example, when considering the path in which the link connection portion 150 is located at the point A11 and descends in the circular motion up to A41, the piston rod 350 'of the second hydraulic cylinder apparatus 300' contracts, The piston rod 350 of the first hydraulic cylinder apparatus 300 is extended.

The control of the cylinder apparatus by the controller according to the present embodiment is based on the one-way stroke of the piston rod as a reference, the path from the point A11 to the point A31 at which the capability is generated and the path from the point A31 to the point A41 And the control from the point A41 to the point A12.

First, the control for each hydraulic cylinder apparatus when the link connecting unit 150 is located at the point A11 and moves to the point A31 where the capability is generated will be described.

The second hydraulic cylinder apparatus 300 'has hydraulic pressure acting on the remaining area minus the area occupied by the piston rod 350'. Therefore, if the flow rates are equal to each other, the piston rod It is natural that the moving speed of the first hydraulic cylinder device 350 'will be faster than the speed of the piston rod 350 of the first hydraulic cylinder device 300.

However, since the speeds of elongation and contraction of the piston rods of the first hydraulic cylinder apparatus 300 and the second hydraulic cylinder apparatus 300 'can not be different from each other, the hydraulic pressure in the second hydraulic cylinder apparatus 300' While the oil is being injected and shrunk, the opening / closing valve of the first hydraulic cylinder apparatus 300 controls the piston rod 350 of the first hydraulic cylinder apparatus 300 to be extended while oil flows from the oil tank in an open no-load state .

That is, until the slider S is lowered to the point of capability generation, the high-pressure oil is injected through the post-emergence port of the second hydraulic cylinder apparatus 300 ', and the opening / closing valve of the first hydraulic cylinder apparatus 300 is opened So that the oil is introduced from the oil tank in a no-load state by the pressure difference.

Next, the control of the controller from the point A31, which is the ability generation point, to the point A41, which is the bottom point, will be described.

In this section, since the slider S actually forms the product by using the lower force, the link connecting portion 150 must be moved so that the upper force can be exerted.

However, since the piston rod 350 'of the second hydraulic cylinder apparatus 300' can not exert sufficient force due to the small cross-sectional area in which the hydraulic pressure acts during contraction, the first hydraulic cylinder apparatus 300 are closed and high pressure oil is injected through the forward oil feed port to generate a necessary force. The force for moving the link connecting portion 150 in this interval is controlled by the extension force of the first hydraulic cylinder device and the force 2 This is the compounding force of the contractile force of the hydraulic cylinder device.

Also in this section, the piston rods 350 of the first hydraulic cylinder apparatus 300 and the piston rods of the second hydraulic cylinder apparatus 300 'are naturally co-operated with each other at the same speed.

Thereafter, control of the controller while the link connecting portion 150 moves from the bottom dead center point A41 to the left top dead center point A12 will be described.

In this section, as the speed is higher, the work efficiency is improved and the SPM can be increased. Therefore, when the high-pressure oil flows in the second hydraulic cylinder device 300 'through the post-expansion oil hole, the piston rod 350' contracts at a high speed At this time, the opening and closing valves of the first hydraulic cylinder apparatus 300 are opened, and the oil flows into the no-load state, so that the moving speeds of the two piston rods become the same.

This is because the piston rod of the first hydraulic cylinder apparatus 300 is operated only by the driving force of the second hydraulic cylinder apparatus 300 'that contracts, and the piston rod of the first hydraulic cylinder apparatus 300 is extended as the oil enters in the open state.

In the one-way interval described so far, the open / close valve of the second hydraulic cylinder apparatus 300 'is always open, and the oil on the forward oil filler port side is being discharged to the oil tank through the open / close valve while contracting.

Conversely, the process of performing the administration from point A12 to point A11 is reversed.

In this section, the open / close valve of the first hydraulic cylinder apparatus 300 is always opened in a no-load state. From the point A12 to the point A32, the open / close valve of the second hydraulic cylinder apparatus 300 ' To the bottom dead center point A41, a force is exerted by the high-pressure oil of the first hydraulic cylinder apparatus 300 in the closed state, and the opening / closing valve of the second hydraulic cylinder apparatus is controlled to open through the bottom dead center.

In this section, the opening and closing valves of the first hydraulic cylinder apparatus 300 are kept open at all times.

Hereinafter, a method of controlling the slider to be a force suitable for molding the product at the point of capability generation due to the resultant force generated by the hydraulic cylinder apparatus in the present embodiment will be described.

The angle formed by the A31 point or the A32 point with the vertical axis corresponding to the ability generation point is θ and the positive angle formed by the tangent line at the A31 point or the A32 point with the horizontal direction is denoted by β and when the slider S descends, The composite force of the piston rod 350 or 350 'at the bottom dead center is expressed by the following equation (1), considering the reaction force applied to the upper end of the upper link 200. [

[Formula 1]

F = 2P? Tan?

However, the maximum force exerted by the hydraulic cylinder apparatus 300 is a force at a point corresponding to the point of capability generation, not at the bottom dead center, and the angle formed by the tangent at this point with the horizontal direction is? The compounding force by the cylinder device should be determined by the following equation (2).

[Formula 2]

F '= F / cos?

Therefore, if the lowering force required for forming the product is set according to various design values, the flow rate may be controlled so that the compounding force of the upper portion F 'can be exerted by the hydraulic cylinder device.

When the hydraulic pressure is supplied to the support cylinder 710 according to the drive signal transmitted from the controller 400 during the above operation, the second rod 712 is projected from the support cylinder 710, The distance from the point of capability generation to the bottom dead center is increased, so that the depth of the groove formed in the workpiece becomes deep.

In addition, when the second rod 712 protrudes from the support cylinder 710 and the first rod 510 protrudes from the slider S at the same time, the capability generating point is raised and the bottom dead center is further lowered The depth of the groove portion to be formed in the workpiece becomes deeper.

Therefore, when the type of the grooves to be formed by the press work is variously changed, the operator does not need to replace the slider S, the pressing member 500, and the supporting member 700 and the slider S and the supporting cylinder 710, The depth of the groove portion formed in the workpiece can be varied in various ways.

Here, the control of the flow rate generally corresponds to a general technique in the hydraulic cylinder apparatus, and thus a detailed description thereof will be omitted.

As described above, when the depth of the groove portion to be formed in the workpiece becomes deeper, the workpiece may not be easily separated from the molding groove portion 716 after the completion of the press work. There is provided a dispenser 800 for easily separating the workpiece from the supporting member 700 while pressing the workpiece in the outward direction.

The deodorization apparatus 800 according to the present embodiment includes a rotary body 816 installed in a working space 810 formed in a molding groove 716 and a support member 700 for providing power to the rotary body 816. [ A driving shaft 814a connecting the motor 814 and the rotating body 816 to transmit the power of the motor 814 to the rotating body 816 and a driving shaft 814b connected to the rotating body 816 A protrusion 818 which protrudes outside the molding groove 716 through the operating hole 812 of the molding groove 716 and presses the workpiece outward of the molding groove 716 when the motor 814 is driven, .

Accordingly, when the operations of the first hydraulic cylinder apparatus 300 and the second hydraulic cylinder apparatus 300 'are completed and the pressing operation is completed, a drive signal is transmitted from the controller 400 to apply power to the motor 814, When the motor 814 is driven, the driving shaft 814a is rotated to rotate the rotating body 816 and the protruding portion 818.

Since the protruding portion 818 protrudes laterally from the rotating body 816 and protrudes outside the molding groove portion 716 through the operating hole portion 812, the workpiece, which is press-fitted into the molding groove portion 716, And protrudes outside the molding trench 716 and is separated.

Here, since the projection 818 includes an elastic material, the projection 818 can be prevented from being collided with an object to be worked and deformed or broken.

Since the motor 814 of this embodiment is provided with the two-axis motor in which the drive shaft 814a protrudes in both lateral directions, the rotation of the motor 814 in both directions of the motor 814 is transmitted to the rotation body 816 provided in each of the pair of operation spaces 810 The projecting drive shaft 814a is connected to drive the pair of rotors 816 simultaneously.

A bearing 814b for supporting the drive shaft 814a is provided in a pair of working space portions 812 disposed at one side and the other side of the center of the motor 814 and a support member 700 The power supply cable 814c extends from the center portion to the bottom portion.

The power cable 814c does not interfere with the support member 700 even when the support member 700 is moved up and down so that power is supplied to the motor 814 after the upward movement of the press member 500 and the support member 700 is completed .

This makes it possible to easily adjust the descending speed and the ascending speed of the slide based on the ability generation point while sufficiently exhibiting the lowering force necessary for the molding of the product while the structure is simple and maximizing the range in which the descending speed and ascending speed of the slide are changed A knuckle press apparatus capable of providing a knuckle press apparatus can be provided.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

In addition, although the knuckle press apparatus has been described as an example, the present invention is merely illustrative, and the press apparatus of the present invention can be used for products other than the knuckle press apparatus.

Accordingly, the true scope of the present invention should be determined by the following claims.

100: lower link 150: link connection
200: Upper link 300, 300 ': Hydraulic cylinder device
310, 310 ': Pivot shaft 350, 350': Piston rod
400: controller 500: pressure member
510: first load 514: first hydraulic line
700: Supporting member 710: Supporting cylinder
712: second load 714: second hydraulic lie
716: molding groove 800:
810: Operation space part 812: Motor
814: motor 814a: drive shaft
814b: Bearing 814c: Power cable
816: Rotor 818: Projection
F: Frame S: Slider

Claims (3)

A lower link having a lower end pin-coupled to an upper end of the slider and sliding up and down with the slider;
An upper link rotatably connected to the frame by a pin, and a lower link forming a link connection pin-coupled with an upper end of the lower link;
A linear driving device provided so as to be rotatable in accordance with an arc motion locus of the link connecting portion while reciprocally moving the link connecting portion in a linear reciprocating manner with the leading end pinned to the link connecting portion;
A pressing member which is provided on the slider and which pressurizes and forms a workpiece;
A support member which is installed to be opposed to the pressing member and is capable of being raised and lowered to the pressing member side, on which the workpiece is placed;
A supporting cylinder for varying a relative speed and a stroke distance of the slider and the pressing member while lifting the supporting member;
A depressing portion provided in a molding groove portion of the support member and engaged with the pressing member and the support member to separate the workpiece from the molding groove portion after molding the workpiece; And
And a controller for controlling the linear driving device, the slider, the supporting cylinder, and the rejection,
Wherein the slider comprises a hydraulic cylinder for raising and lowering the pressure member and increasing or decreasing a descending speed and a stroke length of the slider and transmitting the pressure to the pressing member.
delete 2. The method of claim 1,
A rotating body installed in a working space formed in the molding groove;
A motor installed on the support member to provide power to the rotating body;
A driving shaft connecting the motor and the rotating body to transmit the power of the motor to the rotating body; And
And a protrusion formed to protrude from the rotating body and protrude outside the molding groove through the operating hole of the molding groove when the motor is driven and press the workpiece to the outside of the molding groove. .

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