Pruning-free product sprue structure
By designing a gate structure that eliminates the need for trimming, and employing a V-shaped easy-break section and a cylindrical mounting section, the problems of increased costs and assembly interference caused by post-injection gate trimming are solved, achieving efficient assembly without the need for trimming.
Patent Information
- Application Number
- CN202422025731.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-08-21
AI Technical Summary
In existing technologies, after product injection molding, the gate needs to be trimmed manually or by robot, which increases costs and risks, and incomplete trimming can easily lead to assembly interference.
Design a gate structure that eliminates the need for trimming. It employs a V-shaped easy-break section and a cylindrical mounting section. The gate overlaps with both left and right products within the mold and is weakened in the middle. After the product exits, the remaining part of the gate can be broken off directly, avoiding the need for trimming.
This eliminates the need for gate trimming, avoids assembly interference, reduces manufacturing and development costs, and improves production efficiency.
Smart Images
Figure CN223507602U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive exterior plastic products, specifically a gate structure for products that do not require trimming. Background Technology
[0002] Generally, when designing 3D data during the product design phase, we don't consider the gate. However, after injection molding, the product will have the gate attached. If the product with the gate is assembled, it will interfere with surrounding parts and cannot be assembled. The current solution is to trim the gate manually or robotically after the product is injection molded. The disadvantages of the existing technology are: ① increased labor or robot costs, ② increased trimming time, thus increasing manufacturing and development costs, and ③ the risk of incomplete trimming and interference with other parts. Summary of the Invention
[0003] To solve the above-mentioned technical problems, this utility model provides a product gate structure that does not require trimming.
[0004] This utility model provides a gate structure for a product that does not require trimming, including a left product, a right product, and a gate integrally set between the left and right products. The gate has a V-shaped easy-break part in the middle. The left and right products have cylindrical mounting parts near the gate. The edges of the left and right products and the cylindrical mounting parts are provided with reinforcing ribs. The left and right products have a symmetrical structure. The edges of the left and right products have edge parts that mate with the hand parts.
[0005] Preferably, the gate is tangentially transitioned to the connection between the left-side product and the right-side product.
[0006] Preferably, the thickness of the gate gradually increases from the end towards the V-shaped easily broken portion.
[0007] Preferably, the thickness of the V-shaped foldable portion of the gate is 1 mm.
[0008] Compared with related technologies, the present invention provides the following advantages: Through a gate design that eliminates the need for trimming, the layout of the left and right products within the mold is shortened. The injection gate is simultaneously connected to both products via a single gate, and the middle of the gate is weakened. After the product exits, the middle is simply broken off, leaving the gate residue attached to the product. The remaining gate residue is then partially avoided on the other parts. No trimming is required for the left and right product gates, and assembly is interference-free. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the left and right sides of the product after they have been separated.
[0010] Figure 2This is a schematic diagram of the overall structure of this utility model;
[0011] Figure 3 This utility model Figure 2 Enlarged schematic diagram of section AA in the middle;
[0012] Figure 4 This is a schematic diagram of the product structure on the left side of this utility model;
[0013] Figure 5 This is a schematic diagram of the product and its components after assembly.
[0014] Figure 6 For the present utility model Figure 5 Enlarged schematic diagram of the BB cross section.
[0015] The labels in the diagram are: 1. Left product; 2. Right product; 3. Gate; 4. Cylindrical mounting part; 5. V-shaped easy-break part; 6. Reinforcing rib; 7. Edge part. Detailed Implementation
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0017] Please refer to the following: Figures 1 to 6 A gate structure for a trimmed product includes a left product 1, a right product 2, and a gate 3 integrally disposed between the left product 1 and the right product 2. The gate 3 has a V-shaped easy-break portion 5 in the middle. The left product 1 and the right product 2 have cylindrical mounting portions 4 near the gate 3. Reinforcing ribs 6 are provided at the edges of the left product 1 and the right product 2, as well as at the locations opposite the cylindrical mounting portions 4, to improve product strength. The left product 1 and the right product 2 have a symmetrical structure and are installed on the left and right sides of a car. The edges of the left product 1 and the right product 2 have edge portions 7 that mate with adjacent parts for a tighter fit.
[0018] Preferably, the gate 3 is tangentially connected to the left product 1 and the right product 2, which facilitates the installation of the components.
[0019] Preferably, the thickness of the gate 3 gradually increases from the end to the V-shaped easy-break portion 5, and the thickness of the V-shaped easy-break portion 5 of the gate 3 is 1mm. The gate 3 is weakened in the middle position to facilitate breakage.
[0020] By shortening the layout of product 1 on the left and product 2 on the right within the mold, the injection gate is simultaneously connected to both products via a single gate 3. The V-shaped breakable section 5 in the middle of gate 3 is then weakened. After the product exits, it is simply broken off in the middle, with the remaining part of gate 3 connected to the product. The remaining part of gate 3 is then partially avoided on the other parts. The gates of the left and right products do not require trimming, and assembly is seamless.
[0021] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A gate structure for products that do not require trimming, characterized in that, It includes a left product (1), a right product (2) and an integral gate (3) set between the left product (1) and the right product (2). The gate (3) has a V-shaped easy-break part (5) in the middle. The left product (1) and the right product (2) have a cylindrical mounting part (4) near the gate (3). The left product (1) and the right product (2) have reinforcing ribs (6) at the edges and opposite the cylindrical mounting part (4). The left product (1) and the right product (2) have a symmetrical structure. The left product (1) and the right product (2) have edge parts (7) that cooperate with the right part.
2. The gate structure for a product that does not require trimming according to claim 1, characterized in that, The gate (3) is tangentially connected to the left product (1) and the right product (2).
3. The gate structure for a product that does not require trimming according to claim 1, characterized in that, The thickness of the gate (3) gradually increases from the end to the V-shaped foldable part (5).
4. The gate structure for a product that does not require trimming according to claim 1, characterized in that, The thickness of the V-shaped foldable part (5) of the gate (3) is 1 mm.