Zinc alloy insert

By designing internal threads, fasteners, and anti-rotation grooves for zinc alloy inserts, the problems of poor thermal insulation and stress concentration in copper alloy inserts were solved, achieving stable and efficient injection molding of the inserts and reducing the risk of cracking in injection molded parts.

CN223961611UActive Publication Date: 2026-03-03TIANJIN TEKE ACTUATOR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-12
Publication Date
2026-03-03

AI Technical Summary

Technical Problem

Existing knurled inserts are made of copper alloy, which has low heat insulation effect and stress concentration, making injection molded parts prone to cracking during production and affecting injection molding efficiency.

Method used

It adopts zinc alloy inserts and is designed with internal threads, fasteners, anti-rotation grooves, anti-detachment grooves and positioning anti-detachment blocks, etc. Combined with silicone layer, it improves fixation and heat preservation effect, and reduces temperature difference and stress concentration.

Benefits of technology

It effectively prevents inserts from rotating and detaching, increases clamping force, reduces cracking of injection molded parts, and is low in cost and simple in structure.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of plastic accessories, and discloses a zinc alloy insert which comprises a zinc alloy insert body, internal threads are installed in the zinc alloy insert body, two fixing pieces are fixedly connected to the outer wall of the zinc alloy insert body, a plurality of anti-rotation grooves are formed in the outer walls of the two fixing pieces, and the anti-rotation grooves are formed in the outer wall of the zinc alloy insert body. Compared with an existing copper material, the zinc alloy insert body is made of zinc alloy, the heat preservation effect is better, the temperature difference during injection molding is reduced, the holding force between a plastic workpiece and the insert is increased, compared with an existing knurled insert, the stress concentration at the tip can be reduced, and the product cracking problem caused by injection molding is solved; the device also has the advantages of simple structure and low cost.
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Description

Technical Field

[0001] This utility model relates to the field of plastic parts technology, specifically a zinc alloy insert. Background Technology

[0002] The primary purpose of inserts is to inject products into plastic parts, creating an effective internal thread after installation. The process involves either heating the product and then embedding it into the plastic part, or directly using a mold for injection molding. Existing inserts often utilize brass fittings with good thermal conductivity. Heating the brass insert and pressing it into the plastic matrix allows the product to heat up quickly, increasing efficiency. The heated brass insert also rapidly conducts heat to the plastic part, softening the area around the hole and allowing for quick insertion of the product. If injection molding is used, the insert, after being hot-injected into the plastic part, is secured by the embossed pattern on the outer diameter, creating friction and interlocking forces that prevent it from falling out.

[0003] However, existing knurled inserts, made of copper alloy, have low heat insulation performance in actual use. Furthermore, the stress concentration at the tips of existing knurled inserts causes cracking in injection molded parts during production, greatly reducing the efficiency of plastic injection molding. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a zinc alloy insert.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a zinc alloy insert, comprising a zinc alloy insert body, wherein an internal thread is installed inside the zinc alloy insert body;

[0008] Two fasteners are fixedly connected to the outer wall of the zinc alloy insert body, and multiple anti-rotation grooves are provided on the outer wall of each of the two fasteners.

[0009] The outer wall of the zinc alloy insert body is provided with an anti-detachment groove, and multiple positioning anti-detachment blocks are fixedly connected inside the anti-detachment groove. A reinforcing block is fixedly connected to the top of the zinc alloy insert body.

[0010] Preferably, the top of the reinforcing block has multiple positioning grooves.

[0011] Furthermore, one end of each of the reinforcing blocks is fixedly connected to an anti-detachment arc block.

[0012] Furthermore, the anti-slip groove is fixedly installed inside.

[0013] Based on the foregoing, a silicone layer is fixedly installed inside each of the aforementioned anti-rotation grooves.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides a zinc alloy insert, which has the following beneficial effects:

[0016] This zinc alloy insert, through the combined use of a fixing component, an anti-rotation groove, an anti-detachment groove, and a positioning anti-detachment block, achieves the fixation of the insert position and effectively prevents the insert from rotating or detaching from the workpiece. Furthermore, the zinc alloy body material of the insert provides better heat insulation compared to existing copper materials, reducing temperature differences during injection molding and increasing the clamping force between the plastic workpiece and the insert. Compared to existing knurled inserts, this device reduces stress concentration at the tip, minimizing product cracking caused by injection molding. This device also boasts advantages such as simple structure and low cost. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present invention;

[0018] Figure 2 This is a frontal view of the structure of the non-reinforcing block, the positioning anti-detachment block, and the anti-detachment arc block of this utility model;

[0019] Figure 3 This is a front view structural diagram of the anti-slip texture of this utility model;

[0020] Figure 4 This is a front view structural diagram of the fastener of this utility model.

[0021] In the diagram: 1. Zinc alloy insert body; 2. Internal thread; 3. Fixing component; 4. Anti-rotation groove; 5. Anti-detachment groove; 6. Positioning anti-detachment block; 7. Reinforcing block; 8. Positioning groove; 9. Anti-detachment arc block; 10. Anti-slip texture; 11. Silicone layer. Detailed Implementation

[0022] Please see Figure 1-4A zinc alloy insert includes a zinc alloy insert body 1, with an internal thread 2 installed inside the zinc alloy insert body 1. Two fixing parts 3 are fixedly connected to the outer wall of the zinc alloy insert body 1. Multiple anti-rotation grooves 4 are opened on the outer wall of the two fixing parts 3. An anti-detachment groove 5 is opened on the outer wall of the zinc alloy insert body 1. Multiple positioning anti-detachment blocks 6 are fixedly connected inside the anti-detachment groove 5. A reinforcing block 7 is fixedly connected to the top of the zinc alloy insert body 1 to improve its fixing effect during installation. The installation of the fixing parts 3 and the contact between the plastic workpiece and the anti-rotation groove 4 effectively prevent the insert from rotating. With the cooperation of the anti-detachment groove 5 and the positioning anti-detachment blocks 6, the position of the insert is fixed. Moreover, the zinc alloy material of the zinc alloy insert body 1 has a better heat insulation effect than the existing copper material, reducing the temperature difference during injection molding and increasing the clamping force between the plastic workpiece and the insert.

[0023] It should also be noted that the top of the reinforcing block 7 is provided with multiple positioning grooves 8 to improve the positioning effect of the insert. One end of each of the multiple reinforcing blocks 7 is fixedly connected with an anti-detachment arc block 9 to increase the area of ​​the reinforcing block 7 and enhance the anti-detachment effect of the plastic part. The anti-detachment groove 5 is fixedly installed with anti-slip texture 10 to improve its anti-slip effect. The interior of each of the multiple anti-rotation grooves 4 is fixedly installed with a silicone layer 11 to improve the snapping effect inside the anti-rotation groove 4 and prevent the phenomenon of sliding and falling off.

[0024] In summary, when using this zinc alloy insert, the installation of the fixing part 3 and the contact between the plastic workpiece and the anti-rotation groove 4 effectively prevent the insert from rotating. Furthermore, with the cooperation of the anti-detachment groove 5 and its positioning anti-detachment block 6, the position of the insert is fixed to prevent the insert from detaching from the workpiece. The zinc alloy body 1, being made of zinc alloy, has a better heat insulation effect than the existing copper material, reducing the temperature difference during injection molding and increasing the clamping force between the plastic workpiece and the insert. Compared with existing knurled inserts, this device can reduce stress concentration at the tip and reduce product cracking caused by injection molding.

Claims

1. A zinc alloy insert comprising a zinc alloy insert body (1), characterized in that: The zinc alloy insert body (1) is internally provided with an internal thread (2); The zinc alloy insert body (1) is externally provided with two fixing members (3), and the outer wall of each of the two fixing members (3) is provided with a plurality of anti-rotation grooves (4); The zinc alloy insert body (1) is externally provided with an anti-falling groove (5), the inner wall of the anti-falling groove (5) is fixedly connected with a plurality of positioning anti-falling blocks (6), and the top end of the zinc alloy insert body (1) is fixedly connected with a reinforcing block (7).

2. A zinc alloy insert according to claim 1, characterised in that: The top end of the reinforcing block (7) is provided with a plurality of positioning grooves (8).

3. A zinc alloy insert according to claim 2, wherein: One end of each of the plurality of reinforcing blocks (7) is fixedly connected with an anti-falling arc block (9).

4. A zinc alloy insert according to claim 3, wherein: The anti-falling groove (5) is internally provided with an anti-skid pattern (10).

5. A zinc alloy insert according to claim 4, wherein: The inner wall of each of the plurality of anti-rotation grooves (4) is internally provided with a silica gel layer (11).