Auxiliary mirror shell mold weld line pouring gate
By setting a stop block in the secondary mirror shell mold and optimizing the rubber inlet and flow guide surface, the welding wiring problem in the secondary mirror shell production is solved, the production quality and structural strength are improved, and the production cost is reduced.
Patent Information
- Application Number
- CN202421397624.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-18
AI Technical Summary
There is a problem with welding wiring during the production process of the automotive exterior rearview mirror sub-mirror case, which affects the appearance quality and structural strength, resulting in an increase in production costs.
A secondary mirror shell mold weld wire runner is designed. By setting a stop in the mold, optimizing the position and size of the rubber inlet, and setting a flow surface at the junction, the colloid flow rate and fusion effect are adjusted to reduce the generation of weld wires.
It effectively reduces the generation of welded wires, improves the production quality and structural strength of the secondary mirror shell, and reduces production costs.
Smart Images
Figure CN222792656U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of automobile exterior rearview mirror production equipment, and in particular to a secondary mirror shell mold welding line runner. Background Art
[0002] The car's exterior rearview mirror is one of the vehicle's essential safety features. Its main function is to expand the driver's field of view, allowing the driver to better observe the situation behind, to the sides and below the vehicle.
[0003] The automobile exterior rearview mirror mainly includes a secondary mirror shell and a lens. The secondary mirror shell is produced by injection molding. During the production process, the problem of weld lines on the product surface of the secondary mirror shell may occur. The weld lines on the surface are still obvious after the product is painted, affecting the appearance quality of the product. In addition, the structural strength of the weld lines is lower than that of other parts. Therefore, the weld lines will have an adverse effect on the structural strength of the product.
[0004] With respect to the above-mentioned related technologies, the inventors believe that the existence of the weld line reduces the production quality of the secondary mirror shell, and the increase in the number of defective products increases the production cost of the secondary mirror shell. Utility Model Content
[0005] In order to solve the problem that the existence of weld lines reduces the production quality of the secondary mirror shell and the increase in the number of defective products increases the production cost of the secondary mirror shell, the present application provides a weld line runner for a secondary mirror shell mold.
[0006] The present application provides a secondary mirror housing mold weld line runner, which adopts the following technical solution:
[0007] A secondary mirror shell mold weld line runner comprises a secondary mirror shell mold body and a glue inlet pipe, wherein the glue inlet pipe is connected to the secondary mirror shell mold body through a glue inlet port, and the secondary mirror shell mold body comprises a horizontal outer edge area, a matching vertical wall area, an arc-shaped surrounding area and a main body side area, a stopper is provided on a side of the matching vertical wall area close to the horizontal outer edge area, and the stopper is provided at one end of the matching vertical wall area close to the arc-shaped surrounding area.
[0008] By adopting the above technical solution, the main reason for the weld line on the secondary mirror shell is that the wall thickness of different areas of the secondary mirror shell is different, which is reflected in the runner of the secondary mirror shell mold as the cross-sectional area of the runner is different. The colloid has a lower flow rate when flowing in the area with a small cross-sectional area, and has a higher flow rate when flowing in the area with a large cross-sectional area. The difference in flow rate leads to the generation of weld lines. The setting of the block slows down the flow rate of the colloid when it flows in the area with a large cross-sectional area, reduces the difference in flow rate of the colloid in different areas, thereby improving the fusion effect of the colloid, reducing the generation of weld lines, and further improving the production quality of the secondary mirror shell.
[0009] Optionally, the block is in the shape of a triangle, the triangular side wall of the block abuts against the matching vertical wall area, and the rectangular side wall of the block abuts against the horizontal outer edge area.
[0010] By adopting the above technical solution, according to experimental results, it is known that the triangular block has an excellent effect on promoting the fusion of the colloid, further promoting the fusion of the colloid, thereby further reducing the generation of weld lines.
[0011] Optionally, the glue inlet is located on a side of the horizontal outer edge area close to the arc-shaped surrounding area and away from the matching vertical wall area.
[0012] By adopting the above technical solution, the two colloids can fuse better under high temperature conditions, and the possibility of weld lines is reduced. In the actual production process of the secondary mirror shell, the weld line is generated at one end of the arc-shaped surrounding area close to the matching wall area, and the glue inlet is set at a position close to the weld line, which reduces the temperature loss at the front of the merged colloid, so that the merged colloid fuses under high temperature conditions, improves the fusion effect of the colloid, thereby further reducing the generation of weld lines and further improving the production quality of the secondary mirror shell.
[0013] Optionally, a cross-sectional area of the glue inlet is larger than a cross-sectional area of an end of the glue inlet pipe away from the secondary mirror housing mold body.
[0014] By adopting the above technical solution, the cross-sectional area of the glue inlet is larger, which reduces the flow resistance of the colloid, thereby promoting the fusion rate of the colloid, further reducing the temperature loss at the front of the merging colloid, thereby further promoting the fusion effect of the colloid. The generation of weld lines is further reduced, and the production quality of the secondary mirror shell is further improved.
[0015] Optionally, a guide surface is provided at the junction of the side area of the main body and the arc-shaped surrounding area.
[0016] By adopting the above technical solution, the setting of the guide surface increases the cross-sectional area of the runner at the junction of the side area of the main body and the arc-shaped surrounding area, thereby increasing the flow rate of the colloid at this position, and further reducing the flow rate difference of the colloid in the runners with different cross-sectional areas, thereby further reducing the generation of weld lines and further improving the production quality of the secondary mirror shell.
[0017] In summary, this application has the following beneficial technical effects:
[0018] 1. The setting of the stopper reduces the cross-sectional area of the runner at this position, reduces the flow rate of the colloid in this area, and thus reduces the flow rate difference between the fluids in different areas, thereby reducing the generation of weld lines and improving the production quality of the secondary mirror shell;
[0019] 2. The glue inlet is set at a position close to the weld line and the cross-sectional area of the glue inlet is larger than the cross-sectional area of the glue inlet pipe, which improves the fusion effect of the colloid, thereby further reducing the generation of weld lines and further improving the production quality of the secondary mirror shell;
[0020] 3. The setting of the guide surface increases the cross-sectional area of the runner at this position, improves the flow rate of the colloid in this area, thereby further reducing the flow rate difference between the fluids in different areas, thereby further reducing the generation of weld lines and further improving the production quality of the secondary mirror shell. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a structural schematic diagram of a welding line runner of a secondary mirror shell mold;
[0022] Figure 2 yes Figure 1 Enlarged schematic diagram of part A.
[0023] Explanation of the accompanying reference numerals: 1. Sub-mirror shell mold body; 11. Horizontal outer edge area; 12. Matching vertical wall area; 13. Arc-shaped surrounding area; 14. Main body side area; 2. Glue inlet pipe; 21. Glue inlet port; 3. Block; 4. Guide surface. DETAILED DESCRIPTION
[0024] The following is combined with Figure 1-2 This application is described in further detail.
[0025] The embodiment of the present application discloses a secondary mirror housing mold weld line runner.
[0026] Reference Figure 1 and Figure 2 A secondary mirror shell mold weld line runner includes a secondary mirror shell mold body 1 and a glue inlet pipe 2, the glue inlet pipe 2 is connected to the secondary mirror shell mold body 1 through a glue inlet port 21, and the secondary mirror shell mold body 1 includes a horizontal outer edge area 11, a matching wall area 12, an arc-shaped surrounding area 13 and a main body side area 14. A stopper 3 is fixedly arranged on one side of the matching wall area 12 close to the horizontal outer edge area 11, and the stopper 3 is arranged at one end of the matching wall area 12 close to the arc-shaped surrounding area 13. The shape of the stopper 3 is triangular, and the triangular side wall of the stopper 3 abuts against the matching wall area 12, and the rectangular side wall of the stopper 3 abuts against the horizontal outer edge area 11.
[0027] The glue inlet 21 is located on the side of the horizontal outer edge area 11 close to the arc-shaped surrounding area 13 and away from the matching wall area 12. The cross-sectional area of the glue inlet 21 is larger than the cross-sectional area of the end of the glue inlet pipe 2 away from the auxiliary mirror housing mold body 1.
[0028] A flow guide surface 4 is provided at the junction of the main body side area 14 and the arc-shaped surrounding area 13 .
[0029] The implementation principle of the weld line runner of the secondary mirror shell mold in the embodiment of the present application is as follows: the colloid enters the mold runner through the glue inlet 21 on the glue inlet pipe 2, and the cross-sectional area of the glue inlet 21 is larger than the cross-sectional area of the glue inlet pipe 2, which reduces the glue inlet resistance of the colloid and promotes the fusion between the two strands of colloid, thereby reducing the generation of weld lines. The setting of the block 3 reduces the cross-sectional area of the runner, and the block 3 has a flow blocking effect on the colloid, slowing down the flow rate of the colloid in the area with a larger cross-sectional area. The setting of the guide surface 4 increases the area of the runner and increases the flow rate of the colloid in the area with a smaller cross-sectional area, thereby reducing the flow rate difference between colloids with different flow rates, effectively reducing the generation of weld lines, and thus improving the production quality of the secondary mirror shell. The adjustment of the position of the glue inlet 21 reduces the temperature loss at the front edge of the confluence of the two strands of colloid, thereby improving the fusion effect between the colloids and further reducing the generation of weld lines.
[0030] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A secondary mirror housing mold weld line runner, characterized in that: The invention comprises a secondary mirror shell mold body (1) and a glue inlet pipeline (2), wherein the glue inlet pipeline (2) is connected to the secondary mirror shell mold body (1) through a glue inlet port (21), and the secondary mirror shell mold body (1) comprises a horizontal outer edge region (11), a matching vertical wall region (12), an arc-shaped surrounding region (13) and a main body side region (14), and a stopper (3) is arranged on a side of the matching vertical wall region (12) close to the horizontal outer edge region (11), and the stopper (3) is arranged at one end of the matching vertical wall region (12) close to the arc-shaped surrounding region (13).
2. A secondary mirror housing mold weld line runner according to claim 1, characterized in that: The stopper (3) is in the shape of a triangle, the triangular side wall of the stopper (3) abuts against the matching vertical wall area (12), and the rectangular side wall of the stopper (3) abuts against the horizontal outer edge area (11).
3. A secondary mirror housing mold weld line runner according to claim 2, characterized in that: The glue inlet (21) is located on a side of the horizontal outer edge region (11) close to the arc-shaped surrounding region (13) and away from the matching vertical wall region (12).
4. The secondary mirror housing mold weld line runner according to claim 3, characterized in that: The cross-sectional area of the glue inlet (21) is larger than the cross-sectional area of the end of the glue inlet pipe (2) away from the secondary mirror housing mold body (1).
5. The secondary mirror housing mold weld line runner according to claim 4, characterized in that: A flow guide surface (4) is provided at the junction of the main body side area (14) and the arc-shaped surrounding area (13).