CN221339157U - Knob forming die - Google Patents

Abstract

The utility model discloses a knob forming die, which relates to the technical field of injection dies. The knob forming die comprises a forming assembly, a transmission assembly, a push assembly and a driving motor; the molding assembly comprises a first molding template, a second molding template and a rotating piece, wherein the first molding template and the second molding template are assembled up and down to form a mold cavity, the rotating piece is movably connected with the second molding template, the upper end of the rotating piece is provided with a mold core, the outer surface of the mold core is provided with threads, the mold core is positioned in the mold cavity, and a knob molding gap is formed between the mold core and the mold cavity; the transmission assembly comprises a primary gear, a secondary gear and a tertiary gear which are sequentially meshed and connected, the tertiary gear is connected with the rotating piece, the primary gear is connected with the main shaft of the driving motor, the lower end of the rotating piece is connected with the ejection assembly, and the ejection assembly and the rotating piece synchronously move.

Description

Knob forming die

Technical Field

The utility model relates to the technical field of injection molds, in particular to a knob forming mold.

Background

In the prior art, the utility model patent with the application number of CN202123445134.9 discloses an injection molding die of a compound knob, through the operation of an air cylinder, the limiting frames on two sides and the limiting plates on two sides can be driven to move downwards simultaneously, then the clamped knob is driven to move downwards so that the end part of the knob is inserted into a bottom die, meanwhile, through the cooperation of a limiting shaft and a limiting rod, the sealing top plates on two sides are pushed to move inwards through the limiting sliding plate, the end part of the knob inserted into the bottom die is clamped and kept sealed, then injection molding operation is carried out through an injection molding opening, after cooling is finished, the limiting frames, the limiting plates and the knob after injection molding are driven to move upwards through the air cylinder, simultaneously, the sealing top plates on two sides are reset through corresponding reset springs, the injection molding process of the knob is finished, the injection molding efficiency of the knob is improved while the injection molding quality of the knob is ensured, batch injection molding operation is facilitated, and meanwhile, the injection molding convenience of the knob is improved.

However, in the above technical scheme, after the knob is manufactured, the knob with threads on the inner wall surface cannot be taken out easily when the mold is opened, and the mold is difficult to open.

Disclosure of Invention

The utility model aims to provide a knob forming die which is stable and smooth in knob demoulding by rotating and demoulding through a multi-stage gear transmission structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a knob forming die comprises a forming assembly, a transmission assembly, a push assembly and a driving motor; the molding assembly comprises a first molding template, a second molding template and a rotating piece, wherein the first molding template and the second molding template are assembled up and down to form a mold cavity, the rotating piece is movably connected with the second molding template, the upper end of the rotating piece is provided with a mold core, the outer surface of the mold core is provided with threads, the mold core is positioned in the mold cavity, and a knob molding gap is formed between the mold core and the mold cavity; the transmission assembly comprises a primary gear, a secondary gear and a tertiary gear which are sequentially meshed and connected, the tertiary gear is connected with the rotating piece, the primary gear is connected with a main shaft of the driving motor, the lower end of the rotating piece is connected with the ejection assembly, and the ejection assembly moves synchronously with the rotating piece.

Compared with the prior art, the utility model has the advantages that: by adopting the multi-stage gear transmission structure, smooth rotary demoulding of the knob forming mould is realized. The primary gear in the transmission assembly is connected with the main shaft of the driving motor, driving force is transmitted to the tertiary gear through gear transmission, and then the rotating piece is pushed to perform rotary demoulding operation, so that the upper end of the rotating piece is separated from the knob thread. The transmission structure can provide stable rotating force, so that the demoulding operation in the knob forming process is ensured to be smooth and reliable all the time; in addition, the multi-stage gear transmission can realize the speed reduction transmission, so that the rotating speed of the rotating piece is slower and more uniform in the demolding process, and the knob demolding can be completed stably and completely. The rotation speed of the driving motor can be reduced by multiple times through gear transmission, thereby reducing the running noise.

When the knob is demolded, the movement process of the rotating piece is as follows: the driving motor drives the primary gear to rotate, the rotating piece rotates through the secondary gear and the tertiary gear, and the rotating piece spirally rotates downwards to be separated from the knob.

In some embodiments of the present utility model, the support assembly further includes a first lower die pad plate and a second lower die pad plate, the first lower die pad plate and the second lower die pad plate are overlapped up and down, a first accommodating space is provided between the first lower die pad plate and the second lower die pad plate, the secondary gear and the tertiary gear are arranged in the first accommodating space, the tertiary gear is sleeved on the rotating member, and the support assembly has a first channel for moving up and down the rotating member. The support assembly provides stable support and positioning functions. The overlapping structure of the first lower die pad and the second lower die pad increases the overall rigidity and stability of the die. The first accommodation space provides a space for accommodating the secondary gear and the tertiary gear so that they are tightly connected with the rotating member, ensuring the reliability of transmission. The first channel of the supporting component enables the rotating piece to move up and down, thereby realizing the normal operation of the die

In some embodiments of the present utility model, the mold further comprises a lower mold frame, the lower mold frame and the first lower mold base plate are overlapped up and down, the second forming mold plate is arranged in the lower mold frame, the lower mold frame and the second forming mold plate are combined to form a second channel for the rotating member to move up and down, and the first channel is communicated with the second channel. The introduction of the lower mold frame increases the structural stability and rigidity of the mold. The second forming die plate is arranged in the lower die frame and is in overlapped connection with the first lower die pad plate, so that a second channel for the rotating piece to move up and down is formed. The first channel is communicated with the second channel, so that the consistency and the accuracy of the whole movement track of the rotating piece are ensured

In some embodiments of the utility model, the rotating member includes a tapered end, the second channel is tapered, and the tapered end is adapted to mate with the second channel. The tapered end of the rotating member is in an adaptive fit with the second channel, providing better connection and positioning. The design of the cone shape ensures the close fit between the rotating piece and the second channel, reduces friction and clearance, and improves the running precision and stability of the die

In some embodiments of the present utility model, the support assembly further includes a lower die bottom plate located below the second lower die pad plate, the lower die bottom plate is connected to the second lower die pad plate through a die foot, a second accommodating space is provided between the lower die bottom plate and the second lower die pad plate, the ejector assembly is disposed in the second accommodating space, a lower end of the ejector assembly is connected to the lower die bottom plate, and an upper end of the ejector assembly is connected to a lower end of the rotating member. The lower die bottom plate is positioned below the second lower die cushion plate and is connected through die legs, so that more stable and firm support is provided for the die. The second accommodation space is formed between the lower die bottom plate and the second lower die cushion plate, and accommodates the ejector assembly. The connection structure of the ejection assembly ensures the stable connection of the ejection assembly with the lower die bottom plate and the rotating piece, and the limitation of the stroke of the rotating piece is realized.

In some embodiments of the present utility model, a bearing sleeved with the rotating member is disposed in the second lower die pad. And a bearing sleeved with the rotating piece is arranged in the second lower die base plate, so that the supporting and guiding functions of the rotating piece are provided. The use of the bearing reduces friction between the rotating piece and other parts of the die, reduces movement resistance, and improves service life and operation efficiency of the die.

In some embodiments of the present utility model, the mold further comprises an upper mold frame, wherein the first forming mold plate is installed in the upper mold frame, and the upper mold frame and the lower mold frame are connected in a vertically overlapping manner. The introduction of the upper mold frame increases the overall stability and rigidity of the mold. The first forming die plate is arranged in the upper die frame and is connected with the lower die frame in an up-down overlapping way, so that the stability and consistency of the integral structure of the die are ensured

In some embodiments of the present utility model, the mold further comprises a runner plate and an upper mold bottom plate, wherein the upper mold bottom plate, the runner plate and the upper mold frame are sequentially overlapped from top to bottom. The design of the runner plate and upper die bottom plate provides die integrity and runner control. They are overlapped from top to bottom in turn, so that smooth flow and uniform injection of plastic materials in the forming process are ensured, and forming quality and efficiency are improved.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is a schematic diagram of a drive assembly connection.

In the figure: 1. a first molding die plate; 2. a second molding die plate; 3. a rotating member; 4. a mold core; 5. a knob forming gap; 6. a primary gear; 7. a secondary gear; 8. a third-stage gear; 9. a first lower die pad; 10. a second lower die pad; 11. a lower die frame; 12. a first channel; 13. a second channel; 14. a lower die bottom plate; 15. a mold foot; 16. a push assembly; 17. a bearing; 18. an upper die frame; 19. an upper die bottom plate; 20. a flow channel plate; 21. and driving the motor.

Detailed Description

The present utility model will be further described with reference to the following specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present utility model, it should be noted that, for the azimuth words such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it is not to be construed as limiting the specific scope of protection of the present utility model that the device or element referred to must have a specific azimuth configuration and operation.

It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1-3, a knob forming mold comprises a forming assembly, a transmission assembly, an ejector assembly 16 and a driving motor 21; the molding assembly comprises a first molding template 1, a second molding template 2 and a rotating piece 3, wherein the first molding template 1 and the second molding template 2 are assembled up and down to form a mold cavity, the rotating piece 3 is movably connected with the second molding template 2, the upper end of the rotating piece 3 is provided with a mold core 4, the outer surface of the mold core 4 is provided with threads, the mold core 4 is positioned in the mold cavity, and a knob molding gap 5 is formed between the mold core 4 and the mold cavity; the transmission assembly comprises a primary gear 6, a secondary gear 7 and a tertiary gear 8 which are sequentially meshed and connected, the tertiary gear 8 is connected with the rotating piece 3, the primary gear 6 is connected with a main shaft of the driving motor 21, the lower end of the rotating piece 3 is connected with the ejection assembly 16, and the ejection assembly 16 and the rotating piece 3 synchronously move.

In the above structure: by adopting the multi-stage gear transmission structure, smooth rotary demoulding of the knob forming mould is realized. The primary gear 6 in the transmission assembly is connected with a main shaft of the driving motor, driving force is transmitted to the tertiary gear 8 through gear transmission, and then the rotating piece 3 is pushed to perform rotary demoulding operation, so that the upper end of the rotating piece 3 is separated from the knob thread. The transmission structure can provide stable rotating force, so that the demoulding operation in the knob forming process is ensured to be smooth and reliable all the time; in addition, the multi-stage gear transmission can realize the speed reduction transmission, so that the rotation speed of the rotating piece 3 in the demolding process is slower and more uniform, and the demolding of the knob can be completed stably and completely. The rotation speed of the driving motor can be reduced by multiple times through gear transmission, thereby reducing the running noise.

When the knob is demolded, the movement process of the rotating piece 3 is as follows: the driving motor drives the primary gear 6 to rotate, the rotating piece 3 rotates through the secondary gear 7 and the tertiary gear 8, and the rotating piece 3 spirally rotates downwards to be separated from the knob.

In some embodiments of the present utility model, the present utility model further comprises a support assembly, the support assembly comprises a first lower die pad 9 and a second lower die pad 10, the first lower die pad 9 and the second lower die pad 10 are overlapped up and down, a first accommodating space is provided between the first lower die pad 9 and the second lower die pad 10, the secondary gear 7 and the tertiary gear 8 are arranged in the first accommodating space, the tertiary gear 8 is sheathed on the rotating member 3, and the support assembly is provided with a first channel 12 for the rotating member 3 to move up and down. The support assembly provides stable support and positioning functions. The overlapping structure of the first and second lower die pad 9, 10 increases the overall rigidity and stability of the die. The first accommodation space provides a space for accommodating the secondary gear 7 and the tertiary gear 8 so that they are tightly coupled with the rotary member 3, ensuring reliability of transmission. The first channel 12 of the supporting component enables the rotating piece 3 to move up and down, thereby realizing the normal operation of the die

In some embodiments of the present utility model, the lower mold frame 11 is further included, the lower mold frame 11 is overlapped with the first lower mold base plate 9, the second forming mold 2 is disposed in the lower mold frame 11, the lower mold frame 11 and the second forming mold 2 are combined to form a second channel 13 of the rotating member 3, and the first channel 12 is communicated with the second channel 13. The introduction of the lower mold frame 11 increases the structural stability and rigidity of the mold. The second molding die plate 2 is arranged in the lower die frame 11 and is connected with the first lower die backing plate 9 in a superposition way, so that a second channel 13 for the rotating piece 3 to move up and down is formed. The first channel 12 is communicated with the second channel 13, so that the consistency and the accuracy of the whole movement track of the rotating piece 3 are ensured

In some embodiments of the utility model, the rotor 3 comprises a tapered end, the second channel 13 being tapered, the tapered end being adapted to cooperate with the second channel 13. The tapered end of the rotor 3 is adapted to cooperate with the second channel 13, providing a better connection and positioning. The design of the cone shape ensures the close fit between the rotating piece 3 and the second channel 13, reduces friction and clearance, and improves the running precision and stability of the die

In some embodiments of the present utility model, the support assembly further includes a lower die bottom plate 14 located below the second lower die pad plate 10, the lower die bottom plate 14 is connected to the second lower die pad plate 10 through a die leg 15, a second accommodating space is provided between the lower die bottom plate 14 and the second lower die pad plate 10, the ejector assembly 16 is disposed in the second accommodating space, a lower end of the ejector assembly 16 is connected to the lower die bottom plate 14, and an upper end of the ejector assembly 16 is connected to a lower end of the rotating member 3. The lower die bottom plate 14 is positioned below the second lower die cushion plate 10 and is connected by die legs 15 to provide a more stable and firm support for the die. A second receiving space is formed between the lower die bottom plate 14 and the second lower die cushion plate 10, receiving the ejector assembly 16. The connection structure of the ejector assembly 16 ensures a stable connection with the lower die plate 14 and the rotating member 3, and limits the travel of the rotating member 3.

In some embodiments of the present utility model, a bearing 17 sleeved with the rotating member 3 is disposed in the second lower die pad plate 10. The second lower die cushion plate 10 is internally provided with a bearing 17 sleeved with the rotating member 3, and provides the supporting and guiding functions of the rotating member 3. The use of the bearing 17 reduces friction between the rotating member 3 and other parts of the die, reduces movement resistance, and improves the service life and the operating efficiency of the die.

In some embodiments of the present utility model, the first molding die 1 is installed in the upper die 18, and the upper die 18 is connected to the lower die 11 in a stacked manner. The introduction of the upper mold frame 18 increases the overall stability and rigidity of the mold. The first molding template 1 is arranged in the upper die frame 18 and is connected with the lower die frame 11 in an up-down overlapped way, so that the stability and consistency of the integral structure of the die are ensured

In some embodiments of the present utility model, the runner plate 20 and the upper mold bottom plate 19 are further included, and the upper mold bottom plate 19, the runner plate 20, and the upper mold frame 18 are sequentially stacked from top to bottom. The design of the runner plate 20 and upper die bottom plate 19 provides die integrity and runner control. They are overlapped from top to bottom in turn, so that smooth flow and uniform injection of plastic materials in the forming process are ensured, and forming quality and efficiency are improved.

The foregoing has outlined the basic principles, features, and advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (8)

1. The utility model provides a knob forming die which characterized in that: comprises a molding assembly, a transmission assembly, a pushing assembly (16) and a driving motor; the molding assembly comprises a first molding plate (1), a second molding plate (2) and a rotating piece (3), wherein the first molding plate (1) and the second molding plate (2) are assembled up and down to form a mold cavity, the rotating piece (3) is movably connected with the second molding plate (2), a mold core (4) is arranged at the upper end of the rotating piece (3), threads are arranged on the outer surface of the mold core (4), the mold core (4) is positioned in the mold cavity, and a knob molding gap (5) is formed between the mold core (4) and the mold cavity; the transmission assembly comprises a primary gear (6), a secondary gear (7) and a tertiary gear (8) which are sequentially meshed and connected, the tertiary gear (8) is connected with the rotating piece (3), the primary gear (6) is connected with a main shaft of the driving motor, the lower end of the rotating piece (3) is connected with the ejection assembly (16), and the ejection assembly (16) and the rotating piece (3) synchronously move.

2. The knob forming die according to claim 1, wherein: still include supporting component, supporting component includes first lower mould backing plate (9) and second lower mould backing plate (10), first lower mould backing plate (9) with coincide about second lower mould backing plate (10), first lower mould backing plate (9) with have first accommodation space between second lower mould backing plate (10), secondary gear (7) with tertiary gear (8) set up in the first accommodation space, tertiary gear (8) overcoat in rotate on piece (3), supporting component has first passageway (12) of rotating piece (3) up-and-down activity.

3. The knob forming die according to claim 2, wherein: the lower die frame (11) is overlapped up and down with the first lower die backing plate (9), the second forming die plate (2) is arranged in the lower die frame (11), the lower die frame (11) and the second forming die plate (2) are combined to form a second channel (13) which is movable up and down of the rotating piece (3), and the first channel (12) is communicated with the second channel (13).

4. A knob forming die according to claim 3, wherein: the rotating member (3) comprises a conical end, and the second channel (13) is conical, and the conical end is in adaptive fit with the second channel (13).

5. The knob forming die according to claim 2, wherein: the support assembly further comprises a lower die bottom plate (14) located below the second lower die base plate (10), the lower die bottom plate (14) is connected with the second lower die base plate (10) through die pins (15), a second accommodating space is formed between the lower die bottom plate (14) and the second lower die base plate (10), the ejector assembly (16) is arranged in the second accommodating space, the lower end of the ejector assembly (16) is connected with the lower die bottom plate (14), and the upper end of the ejector assembly (16) is connected with the lower end of the rotating piece (3).

6. The knob forming die according to claim 5, wherein: and a bearing (17) sleeved with the rotating piece (3) is arranged in the second lower die base plate (10).

7. A knob forming die according to claim 3, wherein: the mold further comprises an upper mold frame (18), wherein the first forming mold plate (1) is arranged in the upper mold frame (18), and the upper mold frame (18) and the lower mold frame (11) are connected in an up-down overlapping mode.

8. The knob forming die according to claim 7, wherein: the die further comprises a runner plate (20) and an upper die bottom plate (19), wherein the upper die bottom plate (19), the runner plate (20) and the upper die frame (18) are sequentially overlapped from top to bottom.