Hidden type door handle mold pouring system for eliminating surface weld marks
The mold gating system with its arc-shaped runner and bottom gate design solves the problem of surface weld lines during the injection molding of concealed door handles, achieving high-quality surfaces and efficient production.
Patent Information
- Application Number
- CN202422941578.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-30
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-30
AI Technical Summary
Concealed door handles are prone to surface weld lines on the side of the cavity during injection molding, which affects the product's appearance quality and pass rate.
The mold gating system adopts an arc-shaped runner and bottom gate design. The runner is connected to the main runner, the gate is located at the bottom of the hidden door handle cavity, and cold slug wells are provided at both ends of the main runner. The gating system, main runner, runner and gate are manufactured separately and then connected, which simplifies the setup and improves reliability.
It effectively buffers impact forces, avoids the formation of surface weld lines, ensures the surface quality of concealed door handles, improves production efficiency, and reduces costs.
Smart Images
Figure CN223545688U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of processing technology for concealed door handles of new energy vehicles, and in particular to a mold casting system for concealed door handles that eliminates surface weld lines. Background Technology
[0002] With the increasing popularity of new energy vehicles, concealed door handles are gradually becoming standard equipment. This design not only enhances the vehicle's technological feel and improves interior sealing, but also effectively reduces wind resistance. Currently, concealed door handles are typically manufactured using injection molding, where they are cast into a mold on an injection molding machine. The surface quality requirements for the front of concealed door handles are relatively high. The gate of the mold gating system is usually located on the side of the concealed door handle cavity, where impact forces are easily generated during casting. This can easily lead to surface weld lines on the concealed door handle, resulting in substandard surface appearance quality and affecting the product's pass rate. Summary of the Invention
[0003] In order to improve the surface quality of concealed door handles, this utility model proposes a mold casting system for concealed door handles to eliminate surface weld lines.
[0004] To achieve the objective, the technical solution of this utility model is as follows: a mold casting system for eliminating surface weld lines for a concealed door handle, comprising a gating system, a main runner, a branch runner, and a gate, wherein the gating system is connected to the main runner, characterized in that: the branch runner is an arc-shaped flow channel, one end of the branch runner is connected to the main runner, the other end of the branch runner is connected to the gate, and the gate is located at the bottom of the cavity of the concealed door handle.
[0005] Further limitations on the above technical solution: there are two cavities for the concealed door handle, arranged symmetrically from left to right; there are two runners and gates, also arranged symmetrically from left to right; this arrangement enables one casting system to cast two concealed door handles simultaneously, improving production efficiency;
[0006] Further limitations on the above technical solution: cold slug cavities are provided at the bottom of both ends of the main channel to prevent cold material from entering the cavity and affecting the quality of the plastic part, and to allow the molten material to smoothly fill the cavity.
[0007] Further clarification of the above technical solution: the gating system, main runner, branch runner, and gate are manufactured separately and then connected to each other; this arrangement simplifies the setup of the gating system, facilitates manufacturing, and reduces costs.
[0008] Further refinement of the above technical solution: connecting lugs are provided at both ends of the main channel, and the branch channels are connected to the main channel through the connecting lugs; this configuration can more reliably connect the branch channels.
[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, the runner adopts an arc-shaped runner, which buffers the impact force during casting; the gate is located at the bottom of the cavity of the hidden door handle, avoiding material feeding at the top of the cavity of the hidden door handle; thus, the surface of the hidden door handle is not affected during casting, ensuring the surface quality of the hidden door handle and preventing surface weld lines. Attached Figure Description
[0010] Figure 1 This is a first-state perspective view of the present invention;
[0011] Figure 2 This is a perspective view of the second state of this utility model;
[0012] Figure 3 This is the front view of the present invention;
[0013] Figure 4 This is a top view of the present invention.
[0014] The diagram shows: 1. Sprue; 2. Concealed door handle cavity; 3. Sub-sprue; 4. Main sprue; 401. Connecting lug; 5. Cold slurry cavity; 6. Gate. Detailed Implementation
[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0016] Example 1: Combination Figures 1-4 As shown, a mold gating system for eliminating surface weld lines in a concealed door handle includes a gating system 1, a main runner 4, a branch runner 3, and a gate 6. The gating system 6 is connected to the main runner 4. The branch runner 3 is an arc-shaped channel. One end of the branch runner is connected to the main runner, and the other end of the branch runner is connected to the gate. The gate 6 is located at the bottom of the concealed door handle cavity 2. Cold slug wells 5 are provided at the bottom of both ends of the main runner to prevent cold slug from entering the cavity and affecting the quality of the plastic part, and to allow the molten material to fill the cavity smoothly.
[0017] Example 2: Combination Figures 1-4 As shown, there are two concealed door handle cavities 2, arranged symmetrically on the left and right; there are two runners 3 and two gates 6, also arranged symmetrically on the left and right. This arrangement enables one casting system to cast two concealed door handles simultaneously, improving production efficiency.
[0018] Example 3: Combination Figures 1-3 As shown, connecting lugs 4-1 are provided at both ends of the main channel, and the branch channel is connected to the main channel through the connecting lugs; this arrangement can connect the branch channel more reliably.
[0019] In this invention, the gating channel 1, main channel 4, branch channel 3, and gate 6 are manufactured separately and then connected to each other; this arrangement simplifies the setup of the gating system, facilitates manufacturing, and reduces costs.
[0020] The working principle of this utility model is as follows: The liquid material passes through the pouring channel, the main channel, the branch channel, and the gate in sequence to the bottom of the cavity of the concealed door handle.
[0021] 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 simple substitutions or changes made by those skilled in the art 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 mold casting system for eliminating surface weld lines in concealed door handles, comprising a gating system, a main runner, branch runners, and a gate, wherein the gating system is connected to the main runner, characterized in that: The runner is an arc-shaped runner. One end of the runner is connected to the main runner, and the other end is connected to the gate, which is located at the bottom of the cavity of the concealed door handle.
2. The mold casting system for eliminating surface weld lines for a concealed door handle according to claim 1, characterized in that: The concealed door handle has two cavities, arranged symmetrically on the left and right; the runner and gate also have two symmetrical arrangements on the left and right.
3. A mold casting system for eliminating surface weld lines for a concealed door handle according to claim 1 or 2, characterized in that: The bottom of both ends of the main channel is provided with cold material cavities.
4. The mold casting system for eliminating surface weld lines for a concealed door handle according to claim 3, characterized in that: The gating system, main runner, branch runner, and gate are manufactured separately and then connected to each other.
5. The mold casting system for eliminating surface weld lines for a concealed door handle according to claim 4, characterized in that: The main channel is provided with connecting lugs at both ends, and the branch channels are connected to the main channel through the connecting lugs.