A molding die for the production of earphone shells

Abstract

The present invention belongs to the technical field of earphone shell production, and particularly relates to a forming mold for earphone shell production, which includes a left mold and a right mold. The communication mechanism includes a communication component that matches a number of left cooling grooves. The number of communication components includes a number of arc-shaped blocks, and the number of arc-shaped blocks are mutually abutted to form a circle. An installation groove is formed inside the left mold. A rectangular column is fixedly installed on the arc-shaped block. A stepped groove that is hermetically and slidably connected to the rectangular column is formed inside the left mold. An installation box is fixedly installed on the rectangular column. A first spring is installed between the installation box and the stepped groove. A communication part is installed inside the installation box. When the raw material model inside a number of left forming grooves is cooled, the present invention can enter the left cooling grooves simultaneously and evenly, so that the temperature of the coolant entering a number of left cooling grooves is the same, avoiding the situation of uneven cooling caused by the lower forming mold being preferentially cooled due to the coolant being filled into the cooling grooves from low to high when transporting the coolant.

Description

Technical Field

[0001] The present invention belongs to the technical field of earphone shell production, and particularly relates to a forming mold for earphone shell production. Background Art

[0002] With the continuous increase of various portable devices in life, various wires are entangled, causing certain inconvenience to life and work. In order to make the use of earphone products more convenient, each company develops wireless earphones, which have the function of protecting the earphones to prevent hard objects from leaving scratches on the earphone body;

[0003] The earphone shell is usually produced by injection molding. After injection, cooling, and forming through a high-pressure forming mold, the earphone shell is obtained. Currently, when the forming mold is cooled, the output end of the cooling mechanism is usually directly connected to several cooling grooves of the mold. In this way, when the coolant enters the cooling grooves, it will preferentially enter the lower cooling grooves and can only enter the upper cooling grooves after the lower cooling grooves are filled, resulting in different cooling efficiencies of the raw materials in the upper and lower forming grooves. Therefore, it needs to be improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a forming mold for earphone shell production to solve the problems existing in the background art.

[0005] To achieve the above technical purpose, the technical solution adopted by the present invention is as follows:

[0006] A forming mold for earphone shell production includes a left mold and a right mold. An injection port is opened at the upper end of the left mold, several left forming grooves are opened in the middle of the left mold, the right mold is provided with right forming cores matching the several left forming grooves, a left coolant port is opened at the rear end of the left mold, a left cooling groove matching the left forming groove is opened inside the left mold, and a connecting mechanism is commonly installed between the left coolant port and the several left cooling grooves;

[0007] The connecting mechanism includes connecting components matching the several left cooling grooves. The several connecting components include several arc-shaped blocks, and the several arc-shaped blocks are mutually abutted to form a circle. An installation groove for sealing and sliding connection with the several arc-shaped blocks is opened inside the left mold. A rectangular column is fixedly installed on the arc-shaped block, a stepped groove for sealing and sliding connection with the rectangular column is opened inside the left mold. An installation box is fixedly installed on the rectangular column, a first spring is installed between the installation box and the stepped groove, and a connecting piece for one-way connection with the left cooling groove is installed inside the installation box.

[0008] The connecting part includes a connecting block slidably connected to the mounting box. A second spring is installed between the connecting block and the mounting box. A one-way connecting groove matching the connecting block is provided inside the step groove. The arc-shaped block and the rectangular column jointly form a liquid inlet. The connecting block is provided with a connecting port communicating with the one-way connecting groove and the liquid inlet. A first inclined surface is provided on one side of the connecting block facing the arc-shaped block.

[0009] A number of flow guiding plates are fixedly connected inside the left cooling groove, and the openings of the number of flow guiding plates are staggered away from each other.

[0010] Sealing mechanisms are respectively installed on the two upper and two lower arc-shaped blocks. The sealing mechanism includes a contact plate in contact with the arc-shaped block. A U-shaped block matching the contact plate is horizontally slidably connected inside the left mold. A second inclined surface matching the contact plate is provided on the lower side of the U-shaped block. A rectangular groove communicating with the injection port and the left forming groove is provided inside the left mold. A rectangular block is hermetically slidably connected inside the rectangular groove. A sealing plate communicating with the left forming groove is fixedly connected to one side of the rectangular block close to the left forming groove. A third spring is installed on the rectangular block. Third inclined surfaces in contact with the rectangular block are provided at both ends of the U-shaped block.

[0011] A sealing rubber is installed on the side surface of the rectangular block, and a fourth inclined surface is provided on the side surface of the rectangular block.

[0012] A pushing component is installed in the center of the left mold. The pushing component includes a pushing column hermetically slidably connected to the left mold. The injection port includes a U-shaped feeding port and a circular groove communicating with the rectangular groove. A sealing member matching the injection port is installed on the side surface of the right mold. A limiting ring is fixedly installed on the periphery of the pushing column. A fourth spring is installed on the limiting ring. An annular inclined surface is provided on the pushing column close to and penetrating the installation groove.

[0013] The right mold is provided with a right coolant port. A conveying groove communicating with the right coolant port is provided inside the right mold. A number of right cooling grooves communicating with the conveying groove are provided inside the number of right forming cores.

[0014] When the raw material models in a number of left forming grooves are cooled in the present invention, the coolant can enter the left cooling grooves simultaneously and evenly, so that the temperatures of the coolant entering the number of left cooling grooves are the same, avoiding the situation of uneven cooling caused by the lower forming mold being preferentially cooled when the coolant is filled into the cooling grooves from low to high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention can be further illustrated by the non-limiting embodiments given in the drawings.

[0016] Figure 1 It is a schematic structural diagram of a forming mold for producing earphone shells according to the present invention;

[0017] Figure 2 Schematic plan view of the left and right molds of the present invention;

[0018] Figure 3 Schematic sectional view of the left mold of the present invention;

[0019] Figure 4 First schematic sectional view of a molding die for producing a headphone shell according to the present invention;

[0020] Figure 5 is Figure 4 Enlarged schematic view of the structure at A in

[0021] Figure 6 Second schematic sectional view of a molding die for producing a headphone shell according to the present invention;

[0022] Figure 7 is Figure 6 Enlarged schematic view of the structure at B in

[0023] Figure 8 is Figure 6 Enlarged schematic view of the structure at C in

[0024] Figure 9 Third schematic sectional view of a molding die for producing a headphone shell according to the present invention;

[0025] Figure 10 Schematic sectional view of the right mold of the present invention.

[0026] Description of the main component symbols is as follows:

[0027] Left mold 1, injection port 11, left forming groove 12, left coolant port 13, left cooling groove 14, arc block 15, rectangular column 16, installation box 17, first spring 18, right mold 2, right forming core 20, connecting block 21, second spring 22, diversion plate 23, abutting plate 24, U-shaped block 25, rectangular block 26, sealing plate 27, third spring 29, sealing rubber 28, pushing column 30, limiting ring 31, fourth spring 32, right coolant port 33, conveying groove 34, right cooling groove 35. Detailed implementation manners

[0028] In order to enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be further described below with reference to the drawings and embodiments.

[0029] Embodiment 1: As shown in Figure 1-10As shown in the figure, a molding die for producing an earphone shell according to the present invention includes a left die 1 and a right die 2. An injection port 11 is provided at the upper end of the left die 1, and a plurality of left molding grooves 12 are provided in the middle of the left die 1. The right die 2 is provided with right molding cores 20 that match the plurality of left molding grooves 12. A left coolant port 13 is provided at the rear end of the left die 1, and a left cooling groove 14 that matches the left molding groove 12 is provided inside the left die 1. A communication mechanism is commonly installed between the left coolant port 13 and the plurality of left cooling grooves 14;

[0030] The communication mechanism includes communication components that match the plurality of left cooling grooves 14. The plurality of communication components include a plurality of arc-shaped blocks 15. The plurality of arc-shaped blocks 15 are in contact with each other to form a circle. An installation groove that is hermetically slidably connected to the plurality of arc-shaped blocks 15 is provided inside the left die 1. A rectangular column 16 is fixedly installed on the arc-shaped block 15. A stepped groove that is hermetically slidably connected to the rectangular column 16 is provided inside the left die 1. An installation box 17 is fixedly installed on the rectangular column 16. A first spring 18 is installed between the installation box 17 and the stepped groove. A communication part that is unidirectionally communicated with the left cooling groove 14 is installed inside the installation box 17.

[0031] In the initial state, the plurality of arc-shaped blocks 15 are in contact with each other to form a closed ring. Then, under the action of the first spring 18, the communication part is away from the left cooling groove 14, that is, the left coolant port 13 is not communicated with the left cooling groove 14. At the same time, the input end of the cooling mechanism is connected to the left coolant port 13. During use, the right die 1 and the left die 1 are overlapped and abutted against each other through an existing telescopic mechanism, so that the left molding groove 12 and the right molding core 20 are hermetically formed into the outer shape of the earphone shell. Then, the molding raw material is input from the injection port 11 into the left molding groove 12. After the raw material fills the left molding groove 12, the cooling mechanism is started to convey the coolant into the left coolant port 13. First, the coolant will enter the ring formed by the arc-shaped blocks 15. Since the communication part is not communicated, the continuous entry of the coolant will cause the arc-shaped blocks 15 to be under pressure and overcome the resilience of the first spring 18 to move away from each other inside the installation groove until the communication part inside the installation box 17 matches the position of the left cooling groove 14, and then the communication part is connected. At this time, the coolant filling the installation groove will be evenly input into the left cooling groove 14 from the communication part and finally discharged from the liquid outlet groove on the lower side of the left die 1. In this way, the coolant can be circulated and evenly input into the plurality of left cooling grooves 14 and then output.

[0032] The connecting member includes a connecting block 21 slidably connected to the mounting box 17. A second spring 22 is installed between the connecting block 21 and the mounting box 17. A one-way connecting groove matching the connecting block 21 is provided inside the stepped groove. The arc-shaped block 15 and the rectangular column 16 jointly form a liquid inlet. The connecting block 21 is provided with a connecting port communicating with the one-way connecting groove and the liquid inlet. A first inclined surface is provided on one side of the connecting block 21 facing the arc-shaped block 15.

[0033] A one-way valve is installed inside the one-way connecting groove; in the initial state, the mounting box 17 is far from the one-way connecting groove under the action of the first spring 18, so the coolant cannot enter the left cooling groove 14. When the coolant is input and the arc-shaped blocks 15 move away from each other, the mounting box 17 will move towards the one-way connecting groove until the connecting block 21 coincides with the one-way connecting groove, and under the action of the second spring 22, it will extend out of the mounting box 17 and insert into the one-way connecting groove. Then, the connecting port after the movement of the connecting block 21 coincides with the liquid inlet. In this way, continuously inputting the coolant will transport the coolant located inside the mounting groove into the left cooling groove 14 through the liquid inlet, the connecting port, and the one-way connecting groove, and finally discharge it from the lower liquid outlet groove. When the cooling is completed and the left coolant port 13 no longer continuously inputs the coolant, the arc-shaped blocks 15 will move away from the one-way connecting groove under the action of the first spring 18. Then, the connecting blocks 21 will approach each other, and after the first inclined surface receives a thrust, it will overcome the resilience of the second spring 22 and extend into the mounting box 17 to restore the initial state.

[0034] When the present invention cools the raw material models in a plurality of left forming grooves, it can enter the left cooling grooves simultaneously and evenly, so that the temperatures of the coolant entering the plurality of left cooling grooves are the same, avoiding the situation of uneven cooling caused by the lower forming die being preferentially cooled when the coolant is transported from low to high to fill the cooling grooves.

[0035] Embodiment 2: On the basis of Embodiment 1, a further improvement is made. A plurality of flow guiding plates 23 are fixedly connected inside the left cooling groove 14, and the openings of the plurality of flow guiding plates 23 are staggered and away from each other. The flow guiding plates 23 can make the coolant flow unidirectionally and finally flow out from the liquid outlet groove.

[0036] Sealing mechanisms are respectively installed on the upper two and lower two arc-shaped blocks 15. The sealing mechanism includes an abutting plate 24 abutting against the arc-shaped block 15. A U-shaped block 25 matching the abutting plate 24 is horizontally slidably connected inside the left mold 1. A second inclined surface matching the abutting plate 24 is provided on the lower side of the U-shaped block 25. A rectangular groove communicating with the injection port 11 and the left forming groove 12 is provided inside the left mold 1. A rectangular block 26 is hermetically slidably connected inside the rectangular groove. A sealing plate 27 communicating with the left forming groove 12 is fixedly connected to one side of the rectangular block 26 close to the left forming groove 12. A third spring 29 is installed on the rectangular block 26. Third inclined surfaces abutting against the rectangular block 26 are provided at both ends of the U-shaped block 25.

[0037] An auxiliary spring is installed inside the U-shaped block 25, so that the U-shaped block 25 is always in contact with the abutting plate 24. In the initial state, the rectangular block 26 is located inside the left mold 1. At this time, the channel formed by the rectangular groove and the sealing plate 27 can enable the raw material to be transported into the left forming groove 12. Until the cooling mechanism inputs the coolant, it will cause the arc-shaped blocks 15 to move away from each other, and then cause the abutting plates 24 to move away from each other, and drive the U-shaped block 25 to move towards the rectangular block 26 under the action of the second inclined plane, so that the third inclined plane pushes the rectangular block 26 to extend out of the rectangular groove against the resilience of the third spring 29 until the rectangular block 26 seals the rectangular groove. Since there is a horizontal plane on the side of the earphone housing parallel to the sealing plate 27, the sealing plate 27 that moves with the rectangular block 26 can seal the left forming groove 12. At this time, the feed port of the rectangular groove will be sealed by the rectangular block 26, so that there will be no waste material connecting with the forming mold after cooling, thus avoiding secondary treatment; after cooling, the arc-shaped blocks 15 return to the initial state, and the third spring 29 and the auxiliary spring will return the rectangular block 26 and the U-shaped block 25 to the initial state.

[0038] A sealing rubber 28 is installed on the side of the rectangular block 26, and a fourth inclined plane is provided on the side of the rectangular block 26.

[0039] The sealing rubber 28 improves the sealing performance between the rectangular groove and the left forming groove 12, and the fourth inclined plane can push the raw material occupying the space of the rectangular block 26 towards the injection port 11 when the rectangular block 26 moves.

[0040] A pushing component is installed in the center of the left mold 1. The pushing component includes a pushing column 30 that is hermetically and slidably connected to the left mold 1. The injection port 11 includes a U-shaped feed port and a circular groove communicated with the rectangular groove. A sealing member matching the injection port 11 is installed on the side of the right mold 2. A limiting ring 31 is fixedly installed on the periphery of the pushing column 30. A fourth spring 32 is installed on the limiting ring 31. The pushing column 30 is provided with an annular inclined plane near the through installation groove.

[0041] In the initial state, the arc-shaped blocks 15 are in contact with each other. At this time, the annular inclined surface is in contact with the arc-shaped blocks 15 under the action of the fourth spring 32, and the pushing column 30 extends out of the circular groove. Furthermore, when the arc-shaped blocks 15 move away from each other, the resilience of the fourth spring 32 drives the pushing column 30 to move towards the arc-shaped blocks 15. During this process, the rectangular block 26 closes the rectangular groove. When the rectangular block 26 closes the rectangular groove and the pushing column 30 continues to move until the front end of the pushing column 30 coincides with the circular groove, the arc-shaped blocks 15 move to the limit and cannot move anymore. That is, thereafter, the left cooling groove 14 is cooled by the coolant circulation until the cooling is completed. The arc-shaped blocks 15 approach each other under the action of the first spring 18. However, at this time, the left mold 1 and the right mold 2 are hermetically connected. Therefore, the raw material cooled inside the circular groove blocks the pushing column 30 and prevents the arc-shaped blocks 15 from approaching each other. Until the right mold 2 moves away from the left mold and the circular groove and the rectangular groove are exposed, the blockage of the pushing column 30 is released. Then, under the action of the arc-shaped blocks 15 and the fourth spring 32, the waste inside the circular groove and the rectangular groove is pushed forward to exit the injection port 11.

[0042] The right mold 2 is provided with a right coolant port 33. A conveying groove 34 communicated with the right coolant port 33 is provided inside the right mold 2. A plurality of right forming cores 20 are provided with right cooling grooves 35 communicated with the conveying groove 34. Similarly, the right coolant port 33 is communicated with the cooling mechanism like the left coolant port 13. During cooling, coolant is input into the conveying groove 34 and the right cooling grooves 35 for auxiliary cooling.

[0043] The above embodiments only exemplarily illustrate the principles and effects of the present invention, rather than limiting the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A molding die for manufacturing an earphone shell, comprising a left die and a right die. An injection port is provided at the upper end of the left die, and a plurality of left molding grooves are provided in the middle of the left die. The right die is equipped with right molding cores that match the plurality of left molding grooves, and it is characterized in that: A left coolant port is provided at the rear end of the left mold. A left cooling groove matching the left forming groove is provided inside the left mold. A connecting mechanism is installed between the left coolant port and a plurality of left cooling grooves. The connecting mechanism includes connecting components matching a plurality of left cooling grooves. The plurality of connecting components include a plurality of arc-shaped blocks. The plurality of arc-shaped blocks are in contact with each other to form a circle. An installation groove for sealing and sliding connection with the plurality of arc-shaped blocks is provided inside the left mold. A rectangular column is fixedly installed on the arc-shaped block. A stepped groove for sealing and sliding connection with the rectangular column is provided inside the left mold. An installation box is fixedly installed on the rectangular column. A first spring is installed between the installation box and the stepped groove. A connecting piece for one-way connection with the left cooling groove is installed inside the installation box.

2. The molding die for manufacturing an earphone shell according to claim 1, wherein: The connecting piece includes a connecting block slidably connected to the installation box. A second spring is installed between the connecting block and the installation box. A one-way connecting groove matching the connecting block is provided inside the stepped groove. A liquid inlet is provided jointly on the arc-shaped block and the rectangular column. A connecting port communicating with the one-way connecting groove and the liquid inlet is provided on the connecting block. A first inclined surface is provided on one side of the connecting block facing the arc-shaped block.

3. The molding die for manufacturing the earphone shell according to claim 1, wherein: A plurality of flow guiding plates are fixedly connected inside the left cooling groove. The openings of the plurality of flow guiding plates are staggered away from each other.

4. A molding die for producing an earphone shell according to claim 1, characterized in that: Sealing mechanisms are respectively installed on the upper two and lower two arc-shaped blocks. The sealing mechanism includes a contact plate in contact with the arc-shaped block. A U-shaped block for matching and sliding connection with the contact plate is horizontally slidably connected inside the left mold. A second inclined surface for matching the contact plate is provided on the lower side of the U-shaped block. A rectangular groove communicating with the injection port and the left forming groove is provided inside the left mold. A rectangular block is hermetically slidably connected inside the rectangular groove. A sealing plate communicating with the left forming groove is fixedly connected to one side of the rectangular block close to the left forming groove. A third spring is installed on the rectangular block. Third inclined surfaces for abutting against the rectangular block are provided at both ends of the U-shaped block.

5. The molding die for producing an earphone shell according to claim 4, characterized in that: A sealing rubber is installed on the side surface of the rectangular block. A fourth inclined surface is provided on the side surface of the rectangular block.

6. The forming die for manufacturing an earphone shell according to claim 4, wherein: A pushing component is installed in the center of the left mold. The pushing component includes a pushing column hermetically slidably connected to the left mold. The injection port includes a U-shaped feeding port and a circular groove communicating with the rectangular groove. A sealing member matching the injection port is installed on the side surface of the right mold. A limiting ring is fixedly installed on the periphery of the pushing column. A fourth spring is installed on the limiting ring. An annular inclined surface is provided on the pushing column close to and penetrating the installation groove.

7. A molding die for manufacturing an earphone housing according to claim 1, characterized in that: A right coolant port is provided on the right mold. A conveying groove communicating with the right coolant port is provided inside the right mold. Right cooling grooves communicating with the conveying groove are provided inside a plurality of right forming cores.

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