A new type of pressure maintaining ear sleeve jig

Abstract

The utility model discloses a novel pressure maintaining earmuff jig relates to earmuff production technical field, including lower mould base and upper mould base. Lower mould base top end is set up several product station groove, is equipped with the rubber ring of silica gel material in every product station groove, upper mould base bottom end is connected with several rubber ring position corresponding, size adaptation's compression ring. When closing mould, the rubber ring is evenly extruded by compression ring vertical, and the rubber ring evenly transmits pressure to earmuff product by the elasticity, realizes even pressure maintaining, avoids the product and appears the problem such as deformation, not close tightly because of uneven pressure, effectively promotes product quality. In addition, the positioning boss in product station groove middle part can accurately position earmuff, lower mould base is equipped with air passage and air hole, and the production efficiency and product pass rate are improved in whole.

Description

Technical Field

[0001] This utility model relates to the field of ear cover manufacturing technology, and in particular to a novel pressure-maintaining ear cover fixture. Background Technology

[0002] In the production process of earmuffs, the pressure holding process is crucial, as it directly determines the fit and molding quality of the various parts of the earmuff, and is related to the product's final sealing, comfort, durability, and other key performance characteristics.

[0003] Traditional pressure-holding methods often involve applying pressure to ear tips using a simple flat pressure plate. However, due to the irregular shape and surface irregularities (concave, convex, and curved) of ear tips, the pressure distribution during application is extremely uneven. The area near the center of the pressure plate experiences higher pressure, easily causing localized excessive pressure on the ear tip, leading to material deformation and uneven thickness. Conversely, the pressure at the edges is relatively low, failing to ensure a proper fit and resulting in gaps that compromise the product's sealing performance and reduce its overall quality stability. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a novel pressure-maintaining ear cover fixture.

[0005] This utility model proposes a novel pressure-maintaining ear cover fixture, including a lower mold base and an upper mold base. The top of the lower mold base has several product work station slots, and each product work station slot is equipped with a rubber ring. The bottom of the upper mold base is connected to several pressure rings. The pressure rings correspond to the rubber rings in position and are matched in size. After the lower mold base and the upper mold base are closed, the pressure rings vertically compress the rubber rings.

[0006] Furthermore, each product workstation slot is connected to a positioning protrusion in the middle to position the ear cover product.

[0007] Furthermore, an air channel is pre-installed inside the lower mold base, and an air hole is opened at the bottom of each product station slot. The air outlet of the air channel extends towards each air hole and is connected to the air hole.

[0008] Furthermore, the air inlet of the airway is equipped with an air pipe connector to facilitate connection to an external air injection line.

[0009] Furthermore, the top of the lower mold base is connected to guide pillars and limiting blocks, which are distributed diagonally.

[0010] Furthermore, the rubber ring is a silicone ring.

[0011] The beneficial effects of this utility model are: the pressure ring and the rubber ring are precisely aligned in position and matched in size. When the mold is closed, the pressure ring vertically and evenly squeezes the rubber ring, which can make the pressure evenly transmitted to all parts of the ear cover product. This effectively avoids problems such as local deformation of the ear cover and loose fit of parts caused by uneven pressure, significantly improves the molding quality and sealing performance of the ear cover product, and reduces the product defect rate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the disassembled structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the upper mold base in this utility model;

[0014] Figure 3 This is a schematic diagram of the assembly structure of this utility model;

[0015] Figure 4 This is a half-sectional view of the assembled version of this utility model.

[0016] In the diagram: 1. Lower mold base; 12. Product station slot; 13. Rubber ring; 14. Positioning protrusion; 15. Air passage; 16. Air hole; 17. Air pipe connector; 18. Guide post; 19. Limiting block; 2. Upper mold base; 21. Pressure ring; 3. Ear cover product; 31. Plastic part; 32. PU fabric; 33. Double-sided tape. Detailed Implementation

[0017] Reference Figure 1-4 The present invention proposes a novel pressure-maintaining ear cover fixture, which mainly includes a lower mold base 1 and an upper mold base 2, as detailed below:

[0018] Several product station slots 12 are opened at the top of the lower mold base 1. In this embodiment, the number of product station slots 12 is set to 6, which are distributed in a rectangular array. Each product station slot 12 is provided with a rubber ring 13 inside. The rubber ring 13 is a silicone ring. The silicone material has good elasticity and sealing properties, which can provide uniform pressure to the ear cover product during the extrusion process and prevent the product from being damaged.

[0019] The bottom of the upper mold base 2 is connected to several pressure rings 21. The number of pressure rings 21 corresponds to the number of product station slots 12, which is also 6. The pressure rings 21 correspond to the positions of the rubber rings 13 and are matched in size to ensure that the pressure rings 21 can accurately vertically squeeze the rubber rings 13 when the mold is closed.

[0020] In actual use, the ear cover product 3 is placed in the product station slot 12 of the lower mold base 1 so that the ear cover product 3 contacts the rubber ring 13. Then, the upper mold base 2 is moved downward to close the mold with the lower mold base 1. During the mold closing process, the pressure ring 21 is gradually inserted into the rubber ring 13, which generates vertical compression on the rubber ring 13. The rubber ring 13 undergoes elastic deformation, thereby applying uniform pressure to the ear cover product 3 to achieve the pressure holding function. The ear cover product 3 is composed of a plastic part 31, a PU fabric 32 and a double-sided adhesive 33. During the process of the rubber ring 13 being flattened and expanding laterally, the rubber ring 13 will press on the PU fabric 32. The double-sided adhesive 33 makes the plastic part 31 and the PU fabric 32 bonded and sealed.

[0021] To ensure that the ear cover product 3 is accurately positioned in the product station slot 12 of the lower mold base 1, a positioning protrusion 14 is connected to the middle of each product station slot 12. When placing the ear cover product 3, the center hole of the ear cover product 3 is aligned with the positioning protrusion 14 and inserted, so that the ear cover product 3 can be accurately fixed in the product station slot 12, avoiding displacement during the mold closing process, thereby ensuring the stability and consistency of the pressure holding effect.

[0022] An air passage 15 is pre-installed inside the lower mold base 1. The air passage 15 is arranged in a ring inside the lower mold base 1, and its diameter is designed according to actual needs to ensure smooth gas flow. Each product station slot 12 has an air hole 16 at its bottom. The diameter of the air hole 16 is small, generally 1-2mm, to prevent excessive gas leakage during the pressure holding process, which would affect the pressure holding effect. The air outlet of the air passage 15 extends towards each air hole 16 and is connected to the air hole 16. An air pipe connector 17 is installed at the air inlet of the air passage 15. The air pipe connector 17 uses a standard quick connector for easy connection to an external air injection line.

[0023] In practical applications, when it is necessary to remove the earmuff from the product station slot 12, compressed air can be injected into the air passage 15 through the external air injection line. The compressed air flows through the air passage 15 to each air hole 16 and is ejected from the air hole 16, generating an upward thrust on the earmuff, causing the earmuff to separate from the rubber ring 13, thereby facilitating the removal of the earmuff and improving production efficiency.

[0024] To ensure accurate alignment between the lower mold base 1 and the upper mold base 2 during mold closing and to prevent misalignment, guide pillars 18 and limiting blocks 19 are connected to the top of the lower mold base 1. The guide pillars 18 and limiting blocks 19 are diagonally distributed. The guide pillars 18 are cylindrical, and their diameter is determined based on the dimensions and precision requirements of the fixture, typically 10-20mm. The limiting blocks 19 are rectangular, and their dimensions are determined based on the travel distance and mold closing precision requirements of the upper mold base 2.

[0025] A guide sleeve is provided on the upper mold base 2 at the position corresponding to the guide post 18. The inner diameter of the guide sleeve is adapted to the diameter of the guide post 18 to ensure that the guide post 18 can slide smoothly within the guide sleeve. During the mold closing process, the guide post 18 is first inserted into the guide sleeve, guiding the upper mold base 2 to move downward accurately. When the upper mold base 2 moves to a certain position, the limiting block 19 contacts the upper mold base 2, restricting the upper mold base 2 from moving further downward, thereby ensuring that the lower mold base 1 and the upper mold base 2 are closed in place and ensuring the accuracy of the pressure holding effect.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel pressure-maintaining ear cover fixture, comprising a lower mold base (1) and an upper mold base (2), characterized in that, The lower mold base (1) has several product work station slots (12) at its top. Each product work station slot (12) is equipped with a rubber ring (13). The bottom of the upper mold base (2) is connected to several pressure rings (21). The pressure rings (21) and the rubber rings (13) are positioned and matched in size. After the lower mold base (1) and the upper mold base (2) are closed, the pressure rings (21) vertically squeeze the rubber rings (13).

2. The novel pressure-maintaining ear cover fixture according to claim 1, characterized in that, Each product workstation slot (12) is connected to a positioning protrusion (14) in the middle to position the ear cover product.

3. The novel pressure-maintaining ear cover fixture according to claim 1, characterized in that, An air passage (15) is reserved inside the lower mold base (1), and an air hole (16) is opened at the bottom of each product station slot (12). The air outlet of the air passage (15) extends toward each air hole (16) and is connected to the air hole (16).

4. The novel pressure-maintaining ear cover fixture according to claim 3, characterized in that, The air inlet of the air passage (15) is equipped with an air pipe connector (17) to facilitate connection to an external air injection line.

5. The novel pressure-maintaining ear cover fixture according to claim 1, characterized in that, The top of the lower mold base (1) is connected to a guide post (18) and a limiting block (19), and the guide post (18) and the limiting block (19) are distributed diagonally.

6. The novel pressure-maintaining ear cover fixture according to claim 1, characterized in that, The rubber ring (13) is a silicone ring.

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