Glue sealing mechanism

Abstract

The utility model discloses a glue sealing mechanism, and belongs to the technical field of molds. The glue sealing mechanism comprises a pressing block assembly, a male mold and a female mold, a mold cavity is formed between the male mold and the female mold, and the mold cavity is used for injection molding to form an injection molding part; the pressing block assembly comprises two pressing blocks, the two pressing blocks are arranged on the male mold and the female mold respectively, a plurality of limiting grooves are formed between the two pressing blocks and communicate with the mold cavity, a plurality of wire harnesses of the flat cable can be limited in the limiting grooves in a one-to-one correspondence mode, and the injection molding part is connected to the flat cable. The glue sealing mechanism provided by the utility model prevents the flat cable from being damaged or deformed, and improves the product quality.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a glue sealing mechanism. Background Art

[0002] The front end of the cable is typically formed with a molded part through injection molding. This part is used to secure and protect the cable's connection, enhancing the cable's structural strength, improving stability and durability, and preventing damage during use. During the production process, when the cable is injection-molded, the mold controls the gap, thereby controlling the pressure on the cable. A small gap results in high pressure on the cable and good stability, but it can also damage the cable and, in severe cases, cause ruptures in the cable's surface. A large gap results in low pressure on the cable and poor stability. The cable consists of multiple wire harnesses, and because the harnesses are relatively soft, the impact of injection molding can cause the cable to loosen, sway, twist, and deform, leading to glue overflow. This can cause the cable to twist and deform relative to the molded part after injection molding, affecting product quality. Utility Model Content

[0003] The purpose of the utility model is to provide a sealing mechanism to prevent the cable from being damaged or deformed, thereby improving product quality.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] A sealing mechanism, comprising:

[0006] A male mold and a female mold, wherein a mold cavity is provided between the male mold and the female mold, and the mold cavity is used for injection molding to form an injection molded part;

[0007] The pressure block assembly includes two pressure blocks, and the two pressure blocks are respectively arranged on the male mold and the female mold. A plurality of limiting grooves are formed between the two pressure blocks. The plurality of limiting grooves are all connected to the mold cavity. The plurality of wiring harnesses of the wiring harness can be limited in the plurality of limiting grooves one by one, and the injection molded part is connected to the wiring harness.

[0008] In some possible implementations, the two pressing blocks are respectively provided with a plurality of grooves, and the plurality of grooves of the two pressing blocks correspond one to one to form a plurality of limiting grooves; or

[0009] One of the two pressing blocks is provided with a plurality of grooves on one side facing each other, and the other is in a flat plate shape, and the plurality of grooves form the limiting groove.

[0010] In some possible implementations, the shape of the groove is adapted to the shape of the wiring harness.

[0011] In some possible implementations, the cross-section of the wiring harness is circular, the groove is an arc-shaped groove, and the arc length of the arc-shaped groove is 1 / 4 to 1 / 2 of the circumference of a circle.

[0012] In some possible implementations, the two pressing blocks are respectively provided with a rubber blocking block, and the rubber blocking block is arranged between the limiting groove and the mold cavity.

[0013] In some possible implementations, the cable arrangement further includes an external insulating layer that wraps the plurality of wire harnesses, and the height of the rubber block is equal to the thickness of the external insulating layer.

[0014] In some possible implementations, the thickness of the outer insulation layer is 0.14 mm-2 mm.

[0015] In some possible implementations, the pressing block is provided with a plurality of sawtooth-shaped protrusions to form a plurality of grooves, the grooves form the limiting grooves, and the height of the sawtooth-shaped protrusions is not less than the thickness of the rubber blocking block.

[0016] In some possible implementations, the two pressing blocks are clamped together.

[0017] In some possible implementations, the widths of the plurality of limiting grooves are all 10 mm to 80 mm.

[0018] Beneficial effects of the utility model:

[0019] The utility model provides a sealing mechanism that provides an injection molded part on the cable to wrap the cable, preventing it from loosening and causing a circuit break during use, thereby improving the reliability, stability, and durability of the product. Two pressure blocks are crimped onto both sides of the cable, acting as a sealant in the mold to prevent glue overflow during injection molding. The wiring harness is limited by adjusting the limiting grooves between the pressure blocks to avoid damage to the cable due to small gaps and to prevent the cable from swinging left and right and twisting and deforming due to impact during injection molding due to large gaps, thereby ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a sealing mechanism provided by a specific embodiment of the present utility model;

[0021] Figure 2 This is an exploded view of the sealing mechanism provided by a specific embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of a briquetting assembly provided by a specific embodiment of the present utility model;

[0023] Figure 4 yes Figure 3 Enlarged view of point M.

[0024] In the picture:

[0025] 1. Pressing block assembly; 11. Pressing block; 111. Groove; 112. Slot; 113. Protrusion; 114. Limiting portion; 1A. Limiting groove; 2. Rubber block; 100. Injection molded part; 101. First part; 102. Second part; 200. Cable; 201. Wiring harness; 202. External insulation layer; 203. Circuit board. DETAILED DESCRIPTION

[0026] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0027] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] like Figure 1-Figure 4 As shown, this embodiment provides a sealing mechanism, including a pressing block assembly 1, a male mold, and a female mold. A mold cavity is provided between the male mold and the female mold, and the mold cavity is used for injection molding to form an injection molded part 100. The pressing block assembly 1 includes two pressing blocks 11, and the two pressing blocks 11 are respectively provided in the male mold and the female mold. A plurality of limiting grooves 1A are formed between the two pressing blocks 11, and the plurality of limiting grooves 1A are all connected to the mold cavity. The plurality of wiring harnesses 201 of the cable 200 can be limited in the plurality of limiting grooves 1A one by one, and the injection molded part 100 is connected to the cable 200.

[0030] The working process of the above-mentioned sealing mechanism is as follows: the cable 200 is embedded in the male mold, and the cable 200 can be fixed by using the tooling fixtures in the existing technology; the female mold and the male mold are closed, and the multiple wire harnesses 201 of the cable 200 are limited in the multiple limiting grooves 1A; then glue is injected into the mold cavity to form an injection molded part 100 on the cable 200; finally, the product is taken out.

[0031] By setting the injection molded part 100 on the cable 200, which wraps the cable 200, it prevents loosening during use and causing a circuit break, thereby improving the reliability, stability and durability of the product. The two pressure blocks 11 are crimped on both sides of the cable 200, and play a sealing role in the mold, which can prevent glue overflow during injection molding. The wiring harness 201 is limited by adjusting the limit groove 1A between the pressure blocks 11 to avoid the cable 200 being crushed due to a small gap, and to prevent the cable 200 from swinging left and right and twisting and deforming after being impacted during the injection molding process due to a large gap, thereby ensuring product quality. By inlaying the pressure block assembly 1 on the male mold and the female mold, it is possible to improve on the basis of the existing male mold and the female mold, simplify the design, and both the male mold and the female mold can refer to the existing technology and will not be described in detail.

[0032] Specifically, the cable 200 is soldered to the circuit board 203, and then the two are injection molded. The injection molded part 100 wraps around the soldered area between the circuit board 203 and the cable 200 to prevent loosening and causing a short circuit during use. Accordingly, the mold cavity is located on one side of the multiple limiting grooves 1A, that is, on the side of the cable 200 facing the circuit board 203.

[0033] In one embodiment, the two pressing blocks 11 are respectively provided with a plurality of grooves 111, and the plurality of grooves 111 of the two pressing blocks 11 correspond one to one and form a plurality of limiting grooves 1A. The grooves 111 on the two pressing blocks 11 simultaneously limit the wiring harness 201, thereby improving the limiting effect. In another embodiment, the two pressing blocks 11 face one side of each other, one of which is provided with a plurality of grooves 111, and the other is in the shape of a flat plate, and the plurality of grooves 111 form the limiting grooves 1A. Specifically, the pressing block 11 in the male mold may have grooves 111, and the pressing block 11 in the female mold may be in the shape of a flat plate, or the pressing block 11 in the male mold may be in the shape of a flat plate, and the pressing block 11 in the female mold may have grooves 111, which can also limit the wiring harness 201 and have a simple structure.

[0034] The shape of the groove 111 matches the shape of the wiring harness 201, ensuring accurate fit and good positioning. The wiring harness 201 has a circular cross-section, and the groove 111 is an arc-shaped groove. The arc length of the groove 111 is 1 / 4 to 1 / 2 of the circumference of the circle, which facilitates the placement of the wiring harness 201 in the groove 111 and is convenient for use. Specifically, the arc length of the groove 111 is 1 / 4, 1 / 3, or 1 / 2 of the circumference of the circle, without limitation.

[0035] Optionally, the cable 200 includes two layers of insulation: an inner insulation layer wrapping the outer side of the wiring harness 201, and an outer insulation layer 202 wrapping the outer periphery of the multiple wiring harnesses 201, so that the multiple wiring harnesses 201 form a single unit. Optionally, both insulation layers are made of rubber. The two pressing blocks 11 are each provided with a rubber block 2, which is positioned between the limiting groove 1A and the mold cavity. The provision of the rubber block 2 effectively resists the impact of the injection pressure on the end face of the wiring harness 201, preventing the weld between the circuit board 203 and the wiring harness 201 from falling off due to the impact. The height of the rubber block 2 is equal to the thickness of the external insulating layer 202. Specifically, when the bottom of the groove 111 is a plane, the height of the rubber block 2 is calculated from the bottom of the groove 111; when the bottom of the groove 111 is an arc-shaped surface, the height of the rubber block 2 is calculated from the lowest point of the bottom of the groove 111. The rubber block 2 abuts against the outer periphery of the wiring harness 201 to avoid the height of the rubber block 2 being too large, the rubber block 2 interfering with the wiring harness 201, and causing excessive pressure on the wiring harness 201, and also to avoid the height of the rubber block 2 being too small, forming a gap between the rubber block 2 and the wiring harness 201, and causing rubber overflow.

[0036] Optionally, the injection molded part 100 includes a first portion 101 and a second portion 102. Specifically, the pressing block 11 is provided with a plurality of serrated protrusions to form a plurality of grooves 111. The height of the serrated protrusions is not less than the height of the rubber stop block 2. Similarly, when the bottom of the groove 111 is flat, the height of the rubber stop block 2 and the height of the serrated protrusions are both measured from the bottom of the groove 111; when the bottom of the groove 111 is an arcuate surface, the height of the rubber stop block 2 and the height of the serrated protrusions are measured from the lowest point of the bottom of the groove 111, thereby effectively preventing glue from overflowing between the limiting groove 1A and the wiring harness 201. Since the cross-section of the wiring harness 201 is circular, there is a gap between the rubber stop block 2 and two adjacent wiring harnesses 201. During glue injection, a portion of the plastic is formed in the mold cavity as the first portion 101, and another portion of the plastic is formed in the gap as the second portion 102, that is, the second portion 102 is formed between the rubber stop block 2 and the wiring harness 201.

[0037] Typically, the thickness of the cable 200 ranges from 1mm to 15mm. This thickness can be increased or decreased by increasing or decreasing the thickness of the rubber block 2 according to the thickness of the cable's outer insulation layer 202. The thickness of the outer insulation layer 202 ranges from 0.14mm to 2mm, which is suitable for glue injection in most cable 200 applications. The width of the multiple limiting grooves 1A ranges from 10mm to 80mm, which can accommodate cables 200 with widths between 10mm and 80mm. The specific width of the limiting grooves 1A can be increased or decreased depending on the width of the cable 200.

[0038] The two pressing blocks 11 are clamped together to prevent displacement of the two pressing blocks 11 during glue injection, thereby improving glue injection stability. For example, both sides of the plurality of limit grooves 1A are clamped together to improve connection stability. The male mold pressing block 11 is provided with a clamping groove 112 and a clamping protrusion 113, and the female mold pressing block 11 is provided with a clamping groove 112 and a clamping protrusion 113. The clamping protrusion 113 on the female mold pressing block 11 is clamped together with the clamping groove 112 on the male mold pressing block 11, and the clamping groove 112 on the female mold pressing block 11 is clamped together with the clamping protrusion 113 on the male mold pressing block 11, and the clamping stability is good.

[0039] There are two pressing block assemblies 1 and two mold cavities. The two mold cavities are arranged corresponding to the two pressing block assemblies 1. The mother mold is provided with a glue inlet, which is connected to the two mold cavities. Two cables 200 can be injection molded at one time, which improves efficiency.

[0040] The pressing block 11 is provided with a limiting portion 114 to facilitate connection with the male mold or the female mold, thereby preventing displacement and improving connection reliability.

[0041] By adopting the above-mentioned sealing mechanism, the problems of deformation, glue overflow, crushing and welding loss of the cable 200 have been improved, and the yield rate has reached 99.5%, which is suitable for mass production.

[0042] For example, the flat cable 200 and the injection molded part 100 disposed on the flat cable 200 can form a flexible connector, which can be used in VR products or wearable devices. In other embodiments, the flat cable 200 and the injection molded part 100 can form a patch cord connector or various types of data cable connectors.

[0043] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A sealing mechanism, characterized in that: include: A male mold and a female mold, wherein a mold cavity is provided between the male mold and the female mold, and the mold cavity is used for injection molding to form an injection molded part (100); A pressing block assembly (1) comprises two pressing blocks (11), wherein the two pressing blocks (11) are respectively arranged on the male mold and the female mold, and a plurality of limiting grooves (1A) are formed between the two pressing blocks (11). The plurality of limiting grooves (1A) are all connected to the mold cavity, and a plurality of wiring harnesses (201) of a cable arrangement (200) can be limited in the plurality of limiting grooves (1A) in a one-to-one correspondence, and the injection molded part (100) is connected to the cable arrangement (200).

2. The sealing mechanism according to claim 1, characterized in that: The two pressing blocks (11) are respectively provided with a plurality of grooves (111), and the plurality of grooves (111) of the two pressing blocks (11) correspond one to one and form a plurality of limiting grooves (1A); or The two pressing blocks (11) face each other, one of which is provided with a plurality of grooves (111), and the other is in the shape of a flat plate, and the plurality of grooves (111) form the limiting groove (1A).

3. The sealing mechanism according to claim 2, characterized in that: The shape of the groove (111) is adapted to the shape of the wiring harness (201).

4. The sealing mechanism according to claim 3, characterized in that: The cross section of the wiring harness (201) is circular, the groove (111) is an arc-shaped groove, and the arc length of the arc of the groove (111) is 1 / 4 to 1 / 2 of the circumference of a circle.

5. The sealing mechanism according to claim 1, characterized in that: The two pressing blocks (11) are respectively provided with a rubber blocking block (2), and the rubber blocking block (2) is arranged between the limiting groove (1A) and the mold cavity.

6. The sealing mechanism according to claim 5, characterized in that: The cable arrangement (200) further comprises an external insulating layer (202) wrapping the plurality of wire harnesses (201), and the height of the rubber block (2) is equal to the thickness of the external insulating layer (202).

7. The sealing mechanism according to claim 6, characterized in that: The thickness of the outer insulating layer (202) is 0.14 mm to 2 mm.

8. The sealing mechanism according to claim 5, characterized in that: The pressing block (11) is provided with a plurality of sawtooth-shaped protrusions to form a plurality of grooves (111), the grooves (111) forming the limiting grooves (1A), and the height of the sawtooth-shaped protrusions is not less than the thickness of the rubber blocking block (2).

9. The sealing mechanism according to any one of claims 1 to 8, characterized in that: The two pressing blocks (11) are clamped together.

10. The sealing mechanism according to any one of claims 1 to 8, characterized in that: The widths of the plurality of limiting grooves (1A) are all 10 mm to 80 mm.

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