Die for injection molding of steering wheel ornament

Abstract

The utility model provides a mould for injection molding of a steering wheel ornament, which belongs to the technical field of moulds, mainly aims at solving the problem that a traditional mould runner carrier cannot move, and adopts the technical scheme that the mould comprises a plate A and a plate B, grooves are respectively formed in adjacent sides of the plate A and the plate B, a front mould core and a rear mould core are respectively clamped in the two groups of grooves, and the front mould core and the rear mould core are respectively connected with the plate A and the plate B; an injection molding assembly used for injection molding of a product body is arranged between the plate A and the plate B, the injection molding assembly comprises a first slide insert and a second slide insert, the first slide insert is arranged between the front mold core and the rear mold core, a sliding groove is formed in one side of the first slide insert, and the second slide insert is slidably connected with the sliding groove; through the arrangement of the injection molding assembly, the runner can be flexibly positioned along with the movement of the slide in the molding process, the problem that a runner carrier of a traditional mold cannot move is solved, and the application range of the runner carrier is widened.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and more specifically, particularly relates to a mold for injection molding of a steering wheel trim piece. Background Art

[0002] With the continuous development of the automotive industry, the quality and personalized requirements of automotive interiors have also been increasing day by day. As one of the most important components during the driving process of an automobile, the trim piece of the steering wheel not only has a decorative function but also can enhance the driving experience of the driver.

[0003] The manufacturing of the steering wheel trim piece requires injection molding using a mold. The product is fed with glue on the mold core, and the carrier of the runner cannot move; there is an undercut below the runner for feeding glue, so the carrier of the runner must move. However, due to the special structure of the steering wheel trim piece, it is impossible to move out the undercut while feeding glue. Summary of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a mold for injection molding of a steering wheel trim piece to solve the technical problem in the prior art that the carrier of the runner of the traditional molding mold cannot move, while there is an undercut below the runner for feeding glue, so the carrier of the runner must move, resulting in insufficient applicability.

[0005] The purpose and efficacy of the mold for injection molding of a steering wheel trim piece of the utility model are achieved by the following specific technical means:

[0006] A mold for injection molding of a steering wheel trim piece includes an A plate and a B plate. Grooves are respectively opened on one side of the A plate and the B plate adjacent to each other. The front mold core and the rear mold core are respectively clamped in two groups of the grooves. An injection molding assembly for injection molding a product body is arranged between the A plate and the B plate. The injection molding assembly includes a first slide insert and a second slide insert. The first slide insert is arranged between the front mold core and the rear mold core. A chute is opened on one side of the first slide insert. The second slide insert is slidably connected with the chute.

[0007] According to a preferred embodiment, an installation groove is opened at the top of the rear mold core, and a first wear-resistant block and a second wear-resistant block are fixedly connected to the bottom of the installation groove by screws.

[0008] According to a preferred embodiment, the first wear-resistant block is connected to the first slide insert at the top. The product body is clamped on one side of the first slide insert. A first runner is also arranged on one side of the first slide insert. A glue inlet is arranged at one end of the first runner.

[0009] According to a preferred embodiment, a runner hole groove is formed at the top of the rear mold core, the other end of the first runner penetrates into the runner hole groove, one side of the second slide insert is in contact with the first runner, and a second runner is arranged at the top of the first slide insert.

[0010] According to a preferred embodiment, a slide base is arranged at the top of the second wear-resistant block, a through cavity is formed on one side of the slide base, the through cavity is communicated with the first runner and the second runner, and a water pipe penetrates through the through cavity.

[0011] According to a preferred embodiment, the injection molding assembly further includes two sets of slide ejector pins, perforations are correspondingly formed in the slide base and the first slide insert, and the two sets of slide ejector pins are respectively slidably arranged in the two perforations.

[0012] According to a preferred embodiment, springs are arranged in the two perforations on the first slide insert, and the two sets of slide ejector pins respectively penetrate through the two springs.

[0013] According to a preferred embodiment, a hot runner plate and a panel are sequentially arranged at the top of the A plate, a hot runner is arranged on one side of the hot runner plate, and a locating ring is arranged at the top of the panel.

[0014] According to a preferred embodiment, the bottom of the B plate is connected to the bottom plate through two sets of square iron, and an ejector pin plate is arranged between the two sets of square iron.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. Through the arrangement of the injection molding assembly, when using the mold, by arranging the first runner and the second runner on the first slide insert and then adjusting through the slidable second slide insert, the runner can be flexibly positioned along with the movement of the slide during the molding process, solving the problem that the runner carrier of the traditional mold is immovable, and improving its scope of application.

[0017] 2. Through the arrangement of the two sets of slide ejector pins, when the mold is opened, the slide retracts but the slide ejector pins will leave later. The purpose is that the slide first disengages the clamping force of the cavity, and the ejector pins play a role in holding the back of the product stationary for easy separation; and a runner hole groove is formed on the adjacent rear mold core to form a support point to firmly fix the runner, which can not only ensure the stability of the runner, but also prevent the runner from scratching the product when the front mold moves, further improving the reliability and stability of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a mold for injection molding a steering wheel trim of the utility model;

[0019] Figure 2 An exploded view of a mold for injection molding a steering wheel trim of the present utility model;

[0020] Figure 3 A schematic structural diagram of the injection molding assembly in a mold for injection molding a steering wheel trim of the present utility model after assembly;

[0021] Figure 4 is Figure 3 A schematic structural diagram after disassembly;

[0022] Figure 5 For the present utility model Figure 4 An enlarged schematic diagram of area a;

[0023] Figure 6 A schematic structural diagram of the first runner in a mold for injection molding a steering wheel trim of the present utility model;

[0024] Figure 7 is Figure 6 A schematic structural diagram after disassembly.

[0025] In the figure, the corresponding relationship between the part names and the drawing reference numbers is as follows:

[0026] 10. Product body; 11. A plate; 12. B plate; 13. Hot runner plate; 14. Panel; 15. Hot runner; 16. Locating ring; 17. Square iron; 18. Bottom plate; 19. Ejector plate; 20. Runner hole groove; 21. Front mold core; 22. Rear mold core; 23. Installation groove; 24. First wear-resistant block; 25. Second wear-resistant block; 26. First slide insert; 27. First runner; 28. Second slide insert; 29. Second runner; 30. Slide base; 31. Water pipe; 32. Slide ejector pin; 33. Perforation; 34. Spring; 35. Gate. Specific embodiments

[0027] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0028] Example:

[0029] As shown in the attached Figure 1 to the attached Figure 7 figures:

[0030] The utility model provides a mold for injection molding of a steering wheel trim piece, which includes an A plate 11 and a B plate 12. Grooves are respectively formed on the adjacent sides of the A plate 11 and the B plate 12, and the two grooves can respectively clamp a front mold core 21 and a rear mold core 22. An injection molding assembly for injection molding a product body 10 is arranged between the A plate 11 and the B plate 12. The injection molding assembly includes a first slide block insert 26 and a second slide block insert 28. A first slide block insert 26 is arranged between the front mold core 21 and the rear mold core 22. A chute is formed on one side of the first slide block insert 26, and a slidable second slide block insert 28 is arranged in the chute.

[0031] Please refer to as Figure 4 shown, an installation groove 23 is formed at the top of the rear mold core 22. Specifically, a first wear-resistant block 24 and a second wear-resistant block 25 are fixedly connected to the bottom of the installation groove 23 through screws. The first wear-resistant block 24 and the second wear-resistant block 25 are installed at the bottom of the installation groove 23 through screws, which can well protect the inner wall surface of the installation groove 23 from wear.

[0032] Please refer to as Figure 5 、 Figure 6 and Figure 7 shown, a first slide block insert 26 is arranged at the top of the first wear-resistant block 24. A product body 10 to be molded is clamped and fixed on one side of the first slide block insert 26, which can ensure the position stability of the product body 10 during the molding process. In addition, a first runner 27 is arranged on one side of the first slide block insert 26. A gate 35 is arranged at one end of the first runner 27, which can introduce mold filling material into the product body 10 during the molding process. At the same time, a runner hole groove 20 is also formed at the top of the rear mold core 22. The other end of the first runner 27 penetrates into the runner hole groove 20, which forms a support point and can stably fix the position of the first runner 27. In this way, not only can the stability of the runner passage be ensured, but also the runner can be prevented from damaging the product body 10 due to the pulling force during the mold opening and closing movement, thereby further improving the reliability and stability of the entire mold system.

[0033] Please refer to as Figure 4 shown, one side of the second slide block insert 28 contacts the first runner 27. In addition, a second runner 29 is arranged at the top of the first slide block insert 26. By arranging the first runner 27 and the second runner 29 together on the first slide block insert 26 and using the slidable second slide block insert 28 in the chute for adjustment, the first runner 27 and the second runner 29 can be flexibly positioned along with the movement of the slide block during the molding process, which solves the problem that the position of the runner carrier in the traditional mold is fixed and immovable. Through the sliding structure between the first slide block insert 26 and the second slide block insert 28, the runner can better adapt to the change of the product shape during the mold opening and closing movement, thereby expanding the applicable range of this type of mold.

[0034] Please refer to as Figure 4 shown, a lifter base 30 is provided on the top of the second wear-resistant block 25. An inner cavity channel is opened on one side of the lifter base 30. This inner cavity can be in fluid communication with the first runner 27 and the second runner 29. At the same time, a water pipe 31 is specially designed to pass through the channel. The water pipe 31 in the lifter base 30 can communicate with the first runner 27 and the second runner 29 through the inner cavity channel to realize the transportation of fluid.

[0035] Please refer to as Figure 4 shown, the injection molding assembly further includes two groups of lifter ejector pins 32. Two through holes 33 are correspondingly opened on the lifter base 30 and the first lifter insert 26. These two groups of lifter ejector pins 32 can be respectively slidably inserted into the two through holes 33. At the same time, springs 34 are arranged in the two through holes 33 on the first lifter insert 26. The two groups of lifter ejector pins 32 are respectively inserted into the two springs 34. When the mold is opened, when the lifter retracts, since the lifter ejector pins 32 are all arranged in the springs 34, their movement of leaving will be delayed compared with the retraction movement of the lifter. In this way, the clamping force of the lifter disengaging from the cavity can be realized first. And the springs 34 make the movement of the lifter ejector pins 32 delayed. It can continue to hold against the back of the product when the lifter disengages first, preventing the product from disengaging with the lifter, so as to achieve the purpose of better separation of the product from the cavity.

[0036] Please refer to as Figure 1 As Figure 2 shown, a hot runner plate 13 and a face plate 14 are sequentially arranged on the top of the A plate 11. A hot runner 15 is arranged on one side of the hot runner plate 13. A locating ring 16 is arranged on the top of the face plate 14. The B plate 12 is connected to the bottom plate 18 through two groups of square irons 17. A ejector plate 19 is arranged between the two groups of square irons 17.

[0037] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. A mold for injection molding of a steering wheel trim, comprising an A plate (11) and a B plate (12), wherein grooves are respectively provided on the adjacent sides of the A plate (11) and the B plate (12), and a front mold core (21) and a rear mold core (22) are respectively clamped in two groups of the grooves, characterized in that: An injection molding component for injection molding a product body (10) is arranged between the A plate (11) and the B plate (12), and the injection molding component includes a first row insert (26) and a second row insert (28). The first row insert (26) is arranged between the front mold core (21) and the rear mold core (22), and a slide groove is provided on one side of the first row insert (26), and the second row insert (28) is slidably connected to the slide groove.

2. A mold for injection molding of a steering wheel trim as claimed in claim 1, characterized in that: A mounting groove (23) is provided at the top of the rear mold core (22), and a first wear-resistant block (24) and a second wear-resistant block (25) are fixedly connected at the bottom of the mounting groove (23) by screws.

3. A mold for injection molding of a steering wheel trim as claimed in claim 2, characterized in that: The top of the first wear-resistant block (24) is connected to the first row insert (26), one side of the first row insert (26) is clamped with the product body (10), one side of the first row insert (26) is also provided with a first flow channel (27), and one end of the first flow channel (27) is provided with a glue inlet (35).

4. A mold for injection molding of a steering wheel trim as claimed in claim 3, characterized in that: A flow channel hole groove (20) is provided on the top of the rear mold core (22), the other end of the first flow channel (27) is inserted into the flow channel hole groove (20), one side of the second row insert (28) is in contact with the first flow channel (27), and a second flow channel (29) is provided on the top of the first row insert (26).

5. A mold for injection molding of a steering wheel trim as claimed in claim 4, characterized in that: A sliding seat (30) is arranged on the top of the second wear-resistant block (25), a through cavity is opened on one side of the sliding seat (30), the through cavity is communicated with the first flow channel (27) and the second flow channel (29), and a water pipe (31) is passed through the through cavity.

6. A mold for injection molding of a steering wheel trim as claimed in claim 5, characterized in that: The injection molding assembly also includes two groups of sliding pins (32). The sliding seat (30) and the first sliding insert (26) are both provided with corresponding through holes (33). The two groups of sliding pins (32) are respectively slidably inserted into the two groups of through holes (33).

7. A mold for injection molding of a steering wheel trim as claimed in claim 6, characterized in that: Springs (34) are arranged in the two groups of through holes (33) on the first position insert (26), and the two groups of position ejector pins (32) are respectively inserted in the two groups of springs (34).

8. The mold for injection molding of a steering wheel trim according to claim 1, characterized in that: A hot runner plate (13) and a panel (14) are sequentially arranged on the top of the A plate (11); a hot runner (15) is arranged on one side of the hot runner plate (13); and a positioning ring (16) is arranged on the top of the panel (14).

9. A mold for injection molding of a steering wheel trim as claimed in claim 8, characterized in that: The bottom of the B plate (12) is connected to the bottom plate (18) via two groups of square irons (17), and a thimble plate (19) is arranged between the two groups of square irons (17).

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