Headphone head beam mold and injection molding machine

Abstract

The utility model relates to the technical field of molds, in particular to a headphone head beam mold and an injection molding machine. The headphone head beam mold comprises a first mold plate, a first mold core, a second mold plate, a second mold core and a first core pulling module, the first mold core is arranged on the first mold plate, and the second mold core is arranged on the second mold plate; the first mold core and the second mold core are closed to form a forming cavity; the first core-pulling module comprises a first inclined pressing block, a first inclined guide column, a first slide seat and a first insert; the first inclined pressing block and the first inclined guide column are arranged on the first template; the first slide seat is arranged on the second template in a sliding manner; the at least two first inserts are arranged on the first slide seat, the included angle A between the adjacent first inserts is greater than 0 degree, and the first inserts can extend into the forming cavity; the first inclined pressing block can extrude the first slide seat, and the first inclined guide column can be inserted into a guide hole in the first slide seat. And the multiple first inserts are arranged on the first slide seat, so that the mold cost is reduced, and the layout of the mold is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a head beam mold for a headphone and an injection molding machine. Background Art

[0002] The head beams of some headphones on the market are made of plastic and are formed by injection molding. Holes and bayonets usually need to be provided at both ends of such a head beam, so inserts in different directions need to be arranged in the mold to form the holes and bayonets. In some molds, each insert corresponds to a different slide, which will result in too high mold cost. In addition, the molds for producing head beams of headphones are usually small, the positions of the holes and bayonets are very close, and the mold layout space is limited. The traditional design that each insert corresponds to a different slide is not conducive to the layout of the mold. Summary of the Utility Model

[0003] In view of this, in view of the deficiencies of the existing technology, the main purpose of the utility model is to provide a head beam mold for a headphone, in which two or more inserts are arranged on a first slide base, which can save the mold cost and is more conducive to the mold layout, thus overcoming the deficiencies of the existing technology.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The present application provides a head beam mold for a headphone, including a first template, a first mold core, a second template, a second mold core, and a first core-pulling module; the first mold core is arranged on the first template, and the second mold core is arranged on the second template; after the first mold core and the second mold core are closed, a molding cavity is formed inside; the first core-pulling module includes a first inclined pressure block, a first inclined guide pillar, a first slide base, and a first insert; the first inclined pressure block and the first inclined guide pillar are arranged on the first template; the first slide base is slidably arranged on the second template; at least two first inserts are arranged on the first slide base, the included angle A between adjacent first inserts is greater than 0°, and can extend into the molding cavity; the first inclined pressure block can extrude the first slide base, and the first inclined guide pillar can be inserted into the guiding hole on the first slide base.

[0006] Preferably, the second core-pulling module includes a second inclined pressure block, a second inclined guide pillar, a second slide base, and a second insert; the second slide base is slidably arranged on the second template; the second insert is arranged on the second slide base and can extend into the molding cavity; the second inclined pressure block and the second inclined guide pillar are arranged on the first template, the second inclined pressure block can extrude the second slide base, and the second inclined guide pillar can be inserted into the guiding hole on the second slide base.

[0007] Preferably, an exhaust groove is arranged on the outer side of the molding cavity; an exhaust port is arranged between the exhaust groove and the molding cavity, and the depth of the exhaust port is between 0.45-1.15 mm.

[0008] Preferably, the first row seat is arranged in the first sliding groove on the second template. A first guiding block is arranged at the notch of the first sliding groove, and the first guiding block can press the first limiting parts on both sides of the first row seat.

[0009] Preferably, a first limiting groove is arranged at the bottom of the first sliding groove; a first limiting block is arranged at the bottom of the first inclined pressing block; the first limiting block is inserted into the first limiting groove.

[0010] Preferably, the two first inserts are arranged on the first row seat, and the included angle A between the two first inserts is between 5° and 10°.

[0011] Preferably, a plurality of cooling pipes are arranged in the first mold core and the second mold core, and cooling water is injected into the cooling pipes.

[0012] Preferably, a guide post is arranged on the first template, and a guide post hole is arranged on the second template; the guide post is inserted into the guide post hole; a positioning block is arranged at the edge of the first mold core, and a positioning opening is arranged at the edge of the second mold core, and the positioning block can be embedded into the positioning opening.

[0013] The present application provides an injection molding machine, including the headphone head beam mold described above; the headphone head beam mold is arranged on the machine table.

[0014] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solutions, the included angle A between adjacent first inserts is greater than 0°, and can extend into the molding cavity. First inserts with different angles can correspondingly form holes or bayonets. Two or more first inserts are arranged on a first row seat, which is more conducive to the layout of the mold and reduces the mold cost. Description of the Drawings

[0015] Figure 1 is the overall schematic diagram of the embodiment of the present invention.

[0016] Figure 2 is the Figure 1 schematic diagram of another angle of the embodiment of the present invention.

[0017] Figure 3 is the schematic diagram of the first insert extending into the molding cavity of the embodiment of the present invention.

[0018] Figure 4 is the schematic diagram of the head beam of the embodiment of the present invention.

[0019] Figure 5 is the schematic diagram of the partial structure of the embodiment of the present invention in a top view.

[0020] Description of the Reference Numerals in the Drawings:

[0021] 10. First template; 11. First core; 20. Second template; 21. Second core; 22. Vent groove; 23. Vent port; 24. First chute; 25. First limit groove; 26. Guide pin hole; 27. Molding cavity; 30. First core-pulling module; 31. First inclined pressure block; 32. First limit block; 33. First inclined guide pillar; 34. First slide block seat; 35. First limit part; 36. First insert; 37. Guide hole; 40. Head beam. Detailed implementation manner

[0022] To further elaborate on the technical means and effects adopted by the present invention to achieve the intended utility model purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation manner, structure, features and their effects of the present invention as follows.

[0023] Please refer to Figures 1 to 5 as shown, which shows the specific structure of the preferred embodiment of the present invention, and is a head beam mold for a headphone.

[0024] Among them, two or more first inserts 36 are arranged on the first slide block seat 34, which can reduce the mold cost. The included angle A between adjacent first inserts 36 is greater than 0°, and can extend into the molding cavity 27, and can correspond to the molding opening or bayonet, which is beneficial to the layout of the mold and reduces the mold cost.

[0025] The present application provides a head beam mold for a headset, including a first template 10, a first core 11, a second template 20, a second core 21, and a first core-pulling module 30; the first core 11 is disposed on the first template 10, and the second core 21 is disposed on the second template 20; a molding cavity 27 is formed inside after the first core 11 and the second core 21 are closed; the first core-pulling module 30 includes a first inclined pressure block 31, a first inclined guide post 33, a first slide block seat 34, and a first insert 36; the first inclined pressure block 31 and the first inclined guide post 33 are disposed on the first template 10; the first slide block seat 34 is slidably disposed on the second template 20; at least two first inserts 36 are disposed on the first slide block seat 34, the included angle A between adjacent first inserts 36 is greater than 0°, and can extend into the molding cavity 27; the first inclined pressure block 31 can squeeze the first slide block seat 34, and the first inclined guide post 33 can be inserted into the guiding hole 37 on the first slide block seat 34. A material injection port is provided on the first template 10, and the material injection port is connected to the molding cavity 27 through a runner. When the mold is closed, the first template 10 and the second template 20 are closed, the first core 11 and the second core 21 are closed, and the injection plastic is injected into the molding cavity 27. After the injection plastic is cooled, a head beam 40 is formed. When the mold is closed, the first inclined pressure block 31 presses down the first slide block seat 34, the first inclined guide post 33 is inserted into the guiding hole 37 on the first slide block seat 34, and the first slide block seat 34 moves towards the molding cavity 27, so that the first insert 36 enters the molding cavity 27. Different first inserts 36 form holes or bayonets, etc. at the position of the head beam 40. The included angle A between adjacent first inserts 36 can be set as required. This design can make the first insert 36 more conform to the arc design of the head beam 40 and is more conducive to molding. During demolding, the first inclined guide post 33 can make the first slide block seat 34 withdraw at a faster speed, and the first insert 36 will withdraw from the cavity first, which can prevent scratching the head beam 40 during demolding and ensure the quality better.

[0026] Preferably, the second core-pulling module includes a second inclined pressure block, a second inclined guide post, a second slide block seat, and a second insert; the second slide block seat is slidably disposed on the second template 20; the second insert is disposed on the second slide block seat and can extend into the molding cavity 27; the second inclined pressure block and the second inclined guide post are disposed on the first template 10, the second inclined pressure block can squeeze the second slide block seat, and the second inclined guide post can be inserted into the guiding hole 37 on the second slide block seat 37. For those that only form a single hole with a relatively large adjacent distance, the second core-pulling module is used for molding in this embodiment. When the mold is closed, the second inclined pressure block squeezes the second slide block seat, and the second inclined guide post is inserted into the guiding hole 37 on the second slide block seat, so that the second insert extends into the molding cavity 27, and thus a single hole can be formed at the position of the head beam 40.

[0027] Preferably, an exhaust groove 22 is provided outside the molding cavity 27; an exhaust port 23 is provided between the exhaust groove 22 and the molding cavity 27, and the depth of the exhaust port 23 is between 0.45 - 1.15 mm. The exhaust groove 22 is used to discharge the gas in the molding cavity 27 during injection molding. The exhaust groove 22 is arc-shaped and adapted to the curvature of the head beam 40 of the earphone. The depth of the exhaust port 23 can be any value among 0.45 mm, 0.65 mm, 0.75 mm, 0.95 mm, and 1.15 mm, and can be specifically set according to needs.

[0028] Preferably, the first slide block seat 34 is arranged in the first chute 24 on the second template 20. A first guiding block is arranged at the notch position of the first chute 24, and the first guiding block can press the first limiting parts 35 on both sides of the first slide block seat 34. The first guiding block can limit the first slide block seat 34 within the first chute 24. The first guiding block can prevent the first guiding block from running out of the first chute 24, which is beneficial to ensuring its movement accuracy.

[0029] Preferably, a first limiting groove 25 is provided at the bottom of the first chute 24; a first limiting block 32 is provided at the bottom of the first inclined pressing block 31; the first limiting block 32 is inserted into the first limiting groove 25. Inserting the first limiting block 32 into the first limiting groove 25 can ensure the movement accuracy of the first inclined pressing block 31, and further can well control the movement track of the first slide block seat 34, ensuring that the first insert 36 can be accurately in place.

[0030] Preferably, two first inserts 36 are arranged on the first slide block seat 34, and the included angle A between the two first inserts 36 is between 5 - 10°. The included angle A can be any value among 5°, 6°, 7°, 8°, and 9°, and can be specifically set according to needs. There is a certain included angle between the two first inserts 36, which can better adapt to the curvature requirement of the head beam 40 of the earphone and enable the two first inserts 36 to be simultaneously withdrawn from the molding cavity 27.

[0031] Preferably, a plurality of cooling pipes are passed through the first mold core 11 and the second mold core 21, and cooling water is injected into the cooling pipes. The cooling pipes can inject chilled water, which can quickly cool the first mold core 11 and the second mold core 21, improve the molding speed of the product, and is beneficial to improving production efficiency.

[0032] Preferably, a guide post is provided on the first template 10, and a guide post hole 26 is provided on the second template 20, and the guide post is inserted into the guide post hole 26; a positioning block is provided at the edge position of the first mold core 11, and a positioning opening is provided at the edge position of the second mold core 21, and the positioning block can be embedded into the positioning opening. Inserting the guide post into the guide post hole 26 and embedding the positioning block into the positioning opening can ensure the accuracy of mold closing.

[0033] The present application provides an injection molding machine, including the head beam 40 mold of the head-mounted earphone; the head beam 40 mold of the head-mounted earphone is arranged on the machine table. The injection molding machine is equipped with the head beam 40 mold of the head-mounted earphone, which reduces the overall cost of the injection molded parts.

[0034] In summary, the design focus of the present utility model is that two or more first inserts 36 are arranged in a first slide block seat 34, the included angle A between adjacent first inserts 36 is greater than 0°, and it can extend into the molding cavity 27, which reduces the mold cost and is more conducive to the layout of the mold.

[0035] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present utility model. However, as long as it does not depart from the content of the technical solution of the present utility model, any brief modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A headphone headband mold, characterized by: It includes a first template, a first mold core, a second template, a second mold core, and a first core-pulling module; the first mold core is arranged on the first template, and the second mold core is arranged on the second template; a molding cavity is formed inside the first mold core and the second mold core after being closed; The first core pulling module includes a first inclined pressing block, a first inclined guide column, a first sliding seat, and a first insert; the first inclined pressing block and the first inclined guide column are arranged on the first template; The first row seat is slidably arranged on the second template; at least two first inserts are arranged on the first row seat, the angle A between adjacent first inserts is greater than 0°, and the first inserts can extend into the molding cavity; The first inclined pressing block can press the first row seat, and the first inclined guide column can be inserted into the guide hole on the first row seat.

2. The headphone headband mold according to claim 1, characterized in that: It also includes a second core-pulling module, which includes a second inclined pressure block, a second inclined guide column, a second row seat, and a second insert; the second row seat is slidably arranged on the second template; the second insert is arranged on the second row seat and can extend into the molding cavity; the second inclined pressure block and the second inclined guide column are arranged in the first template, the second inclined pressure block can squeeze the second row seat, and the second inclined guide column can be inserted into the guide hole on the second row seat.

3. The headphone headband mold according to claim 1, characterized in that: An exhaust groove is arranged on the outer side of the molding cavity; an exhaust port is arranged between the exhaust groove and the molding cavity to connect them, and the depth of the exhaust port is between 0.45-1.15 mm.

4. The headphone headband mold according to claim 1, characterized in that: The first row seat is arranged in a first slide groove on the second template, and a first guide block is arranged at the notch position of the first slide groove, and the first guide block can press the first limiting parts on both sides of the first row seat.

5. The headphone headband mold according to claim 4, characterized in that: A first limiting groove is arranged at the bottom of the first sliding groove; a first limiting block is arranged at the bottom of the first inclined pressure block; and the first limiting block is inserted into the first limiting groove.

6. The headphone headband mold according to claim 1, characterized in that: The two first inserts are arranged on the first row seat, and the angle A between the two first inserts is between 5-10°.

7. The headphone headband mold according to claim 1, characterized in that: A plurality of cooling pipes are inserted into the first mold core and the second mold core, and cooling water is filled in the cooling pipes.

8. The headphone headband mold according to claim 1, characterized in that: The first template is provided with guide pillars, the second template is provided with guide pillar holes, and the guide pillars are inserted into the guide pillar holes; the edge of the first mold core is provided with positioning blocks, the edge of the second mold core is provided with positioning openings, and the positioning blocks can be embedded in the positioning openings.

9. An injection molding machine, characterized in that: The headphone headband mold comprises any one of claims 1-8; the headphone headband mold is arranged on a machine platform.

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