Secondary mold closing structure applied to HUD mold
By applying a secondary mold clamping structure on the HUD mold and pressurizing with elastic components such as a disc spring, the problem of low optical accuracy of injection molded products in the prior art is solved, and high precision and high quality production of HUD products are achieved.
Patent Information
- Application Number
- CN202421962886.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-14
AI Technical Summary
It is difficult to manufacture high-precision and high-quality aspherical mirrors in the prior art, especially in the production process of HUD products, the insufficient accuracy of the injection molding technology leads to low optical accuracy of the product.
A secondary mold clamping structure applied on HUD mold is adopted. By installing multiple mold clamping components between the B template and the pad, including elastic components such as stacked disc springs, the secondary mold clamping is achieved, increasing the pressure on the injection molded product, thereby improving the optical accuracy of the product.
Through the application of the secondary mold clamping structure, the surface optical accuracy of HUD products can be significantly improved, ensuring high quality and high accuracy of the products, and is suitable for heavy-duty mechanical equipment.
Smart Images
Figure CN223000989U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molds, and particularly relates to a secondary mold clamping structure applied to a HUD mold. Background Art
[0002] The head-up display, abbreviated as HUD and also called the head-up display system, refers to a multifunctional instrument panel centered on the vehicle driver and allowing blind operation. Its function is to project important driving information such as speed and navigation onto the windshield in front of the driver, enabling the driver to view important driving information such as speed and navigation without having to lower or turn their head as much as possible.
[0003] In the production process of HUD, injection molding technology is an important link, especially when manufacturing an aspherical mirror. In the production of HUD, injection molding technology is mainly used to manufacture aspherical mirrors. The manufacturing of such mirrors has very high precision requirements. The aspherical mirror manufactured by an injection mold can effectively project the information image on the display screen onto the vehicle windshield. How to manufacture an aspherical mirror with high precision and high quality is an urgent problem to be solved. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a secondary mold clamping structure applied to a HUD mold to solve related problems in the prior art.
[0005] The technical solution of the utility model is: a secondary mold clamping structure applied to a HUD mold, the HUD mold includes an upper template, an A template, a B template, a backing plate, and a bottom plate. Upper and lower mold cores are respectively installed on the A template and the B template. A plurality of installation holes are concavely formed in the end face of the B template facing the backing plate, and a mold clamping component is installed in each installation hole; after the first mold clamping is completed, a gap is left between the B template and the backing plate under the action of the mold clamping component; the mold clamping component includes an elastic component, and the elastic component is always in a compressed state.
[0006] Preferably, the elastic component is a plurality of stacked disc spring sheets. The plurality of disc spring sheets are sleeved on a fixing column with a limiting boss at the head. A top cover with a U-shaped cross-section is sleeved on the fixing column between the plurality of disc spring sheets and the boss; one end face in the axial direction of the top cover abuts against the plurality of disc spring sheets, and the other end face abuts against the backing plate; the top cover can slide along the axial direction of the fixing column.
[0007] Preferably, a bolt through hole is formed through the axis of the fixing column, and the fixing column is fixed in the installation hole by a bolt; a gasket is provided between the fixing column and the installation hole, and the plurality of disc spring sheets are located between the gasket and the top cover.
[0008] Preferably, the cross-section of the gasket is circular, and a through-hole is provided on the axis of the gasket for the bolt to pass through; except for the boss, the fixing post is a cylinder, and through-holes are provided on the axes of each disc spring piece, and a through-hole is provided on the axis of the top cover. Each disc spring piece and the top cover are sleeved on the cylinder through the through-holes.
[0009] Preferably, the thickness of the boss of the fixing post is less than the depth of the cover body of the top cover.
[0010] Preferably, the bottom surface of the fixing post fixed in the mounting hole is not lower than the bottom surface of the B plate, and the bottom surface of the bolt mounted on the fixing post is not lower than the bottom surface of the fixing post.
[0011] Preferably, a plurality of the mold clamping assemblies are arranged around the lower mold core.
[0012] Compared with the prior art, the advantages of the present utility model are as follows:
[0013] (1) In the secondary mold clamping structure applied to the HUD mold in the present utility model, a mold clamping assembly is installed on the end face of the B template facing the backing plate, which can achieve secondary mold clamping, pressurize the injection molded product, make the injection molded product pressed more tightly, and thus improve the optical accuracy of the surface of the HUD product.
[0014] (2) In the present utility model, a plurality of stacked disc spring pieces can bear a great load compared with the cylindrical spiral spring in the prior art, and are elastic elements suitable for use in heavy machinery and equipment.
[0015] (3) In the present utility model, a gasket is provided between the fixing post and the mounting hole, and a plurality of disc spring pieces are located between the gasket and the top cover. The setting of the gasket can avoid inaccurate machining of the depth dimension of the mounting hole, and the position of the top cover can be adjusted with the gasket. Description of the Drawings
[0016] The present utility model will be further described below with reference to the drawings and embodiments:
[0017] Figure 1 is the top view of the secondary mold clamping structure applied to the HUD mold in this embodiment;
[0018] Figure 2 is Figure 1 the schematic cross-sectional structure diagram of H-H in
[0019] Figure 3 is the schematic structure diagram of the top cover of this embodiment abutting against the backing plate, and there is a gap between the B template and the backing plate under the action of the mold clamping assembly;
[0020] Figure 4 is Figure 2 the enlarged schematic structure diagram of A in
[0021] Figure 5 Schematic diagram of the layout positions of the multiple mold clamping components on the B template in this embodiment.
[0022] Wherein: 1. Upper template, 2. A template, 3. B template, 4. Cushion plate, 5. Bottom plate, 6. Mold clamping component, 7. Disc spring piece, 8. Fixed column, 9. Column body, 10. Boss, 11. Top cover, 12. Gasket, 13. Bolt. Specific embodiments
[0023] The following further elaborates on the content of the present utility model in conjunction with specific embodiments:
[0024] In the description of the utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the utility model.
[0025] As Figure 1 、 Figure 2 shown, a secondary mold clamping structure applied to an HUD mold. The HUD mold includes an upper template 1, an A template 2, a B template 3, a cushion plate 4, and a bottom plate 5. Upper and lower mold cores are respectively installed on the A template and the B template 3. A plurality of installation holes are concavely formed in the end face of the B template 3 facing the cushion plate 4, and each installation hole is provided with a mold clamping component 6. As Figure 5 shown, the multiple mold clamping components 6 are arranged around the lower mold core. After the first mold clamping is completed, a gap is left between the B template 3 and the cushion plate 4 under the action of the mold clamping component 6 (as Figure 3 shown), providing conditions for the second mold clamping; as Figure 3 、 Figure 4 shown, the mold clamping component 6 includes an elastic component, and the elastic component is always in a compressed state. The elastic component is a plurality of stacked disc spring pieces 7, and the plurality of disc spring pieces 7 are sleeved on a fixed column 8 with a boss 10 for limiting at the head. A top cover 11 with a U-shaped cross-section is sleeved on the fixed column 8 between the plurality of disc spring pieces 7 and the boss 10; one end face in the axial direction of the top cover 11 abuts against the plurality of disc spring pieces 7, and the other end face abuts against the cushion plate 4; the top cover 11 can slide along the axial direction of the fixed column 8; the plurality of stacked disc spring pieces 7 can withstand a great load compared with the cylindrical spiral spring in the prior art and are elastic elements suitable for use in heavy machinery and equipment.
[0026] As Figure 3 , Figure 4 shown, a through hole for a bolt 13 is provided through the axis of the fixed column 8, and the fixed column 8 is fixed in the mounting hole by the bolt 13; a gasket 12 is provided between the fixed column 8 and the mounting hole, and a plurality of disc spring pieces 7 are located between the gasket 12 and the top cover 11. The setting of the gasket 12 can avoid inaccurate machining of the depth dimension of the mounting hole, and the position of the top cover 11 can be adjusted with the gasket 12. The cross-section of the gasket 12 is circular, and a through hole is provided on the axis of the gasket 12 for the bolt 13 to pass through; the column body 9 is the part of the fixed column 8 excluding the boss 10. A through hole is provided on the axis of each disc spring piece 7, and a through hole is provided on the axis of the top cover 11. Each disc spring piece 7 and the top cover 11 are sleeved on the column body 9 through the through holes. The thickness of the boss 10 of the fixed column 8 is less than the depth of the cover body of the top cover 11, so that the top cover 11 can slide along the axial direction of the fixed column 8. The bottom surface of the fixed column 8 fixed in the mounting hole is not lower than the bottom surface of the B plate, and the bottom surface of the bolt 13 mounted on the fixed column 8 is not lower than the bottom surface of the fixed column 8, so as to ensure that the B template 3 and the backing plate 4 can be in contact after the second mold closing.
[0027] The working principle of a secondary mold closing structure applied to an HUD mold in the present utility model is as follows: Before the A template and the B template 3 are closed, under the elastic force of a plurality of disc spring pieces 7, the top cover 11 abuts against the backing plate 4, and there is a gap between the B template 3 and the backing plate 4 under the action of the mold closing assembly 6 (as Figure 3 shown); After the first mold closing is completed, under the elastic force of a plurality of disc spring pieces 7, the top cover 11 still abuts against the backing plate 4, and there is still a gap between the B template 3 and the backing plate 4 under the action of the mold closing assembly 6; When the injection molding is completed and the pressure holding is carried out, the mold closing driving mechanism acts again for the second mold closing. At this time, the mold closing driving mechanism overcomes the elastic force of a plurality of disc spring pieces 7 and pushes the backing plate 4 forward to contact the B template 3 (as Figure 4 shown), pressurizes the injection molded product, makes the injection molded product pressed more tightly, and further improves the optical precision of the surface of the HUD product.
[0028] The above embodiments are only for illustrating the technical concept and features of the present utility model, and the purpose is to enable those who are familiar with this technology to understand the content of the present utility model and implement it accordingly, and it cannot be used to limit the protection scope of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present utility model.
Claims
1. A secondary mold clamping structure applied to a HUD mold, the HUD mold comprising an upper mold plate, an A mold plate, a B mold plate, a backing plate, and a bottom plate, the A mold plate and the B mold plate are respectively provided with an upper mold core and a lower mold core, characterized in that: The end surface of the B template facing the backing plate is concavely opened with multiple mounting holes, and a mold clamping assembly is installed in each mounting hole; after the first mold clamping is completed, a gap is left between the B template and the backing plate due to the action of the mold clamping assembly; the mold clamping assembly includes an elastic component, and the elastic component is always in a compressed state.
2. The secondary mold clamping structure used in a HUD mold according to claim 1, characterized in that: The elastic component is a plurality of stacked disc spring sheets, which are sleeved on a fixed column with a boss for limiting the position on the head. The fixed column is sleeved with a top cover with a U-shaped vertical section located between the plurality of disc spring sheets and the boss; one axial end face of the top cover abuts against the plurality of disc spring sheets, and the other end face abuts against the pad; the top cover can slide along the axial direction of the fixed column.
3. The secondary mold clamping structure used in a HUD mold according to claim 2, characterized in that: The fixing column is provided with a through hole for bolts through its axis, and the fixing column is fixed in the mounting hole by bolts; a gasket is arranged between the fixing column and the mounting hole, and the plurality of disc spring sheets are located between the gasket and the top cover.
4. The secondary mold clamping structure used in a HUD mold according to claim 3, characterized in that: The cross section of the gasket is circular, and a through hole is set on the axis of the gasket for the bolt to pass through; the fixing column is a column except for the boss, and a through hole is set on the axis of each disc spring piece, and a through hole is set on the axis of the top cover, and each disc spring piece and the top cover are sleeved on the column through the through hole.
5. The secondary mold clamping structure used in a HUD mold according to claim 2, characterized in that: The thickness of the boss of the fixing column is smaller than the depth of the top cover body.
6. The secondary mold clamping structure used in a HUD mold according to claim 3, characterized in that: The bottom surface of the fixing column fixed in the mounting hole is not lower than the bottom surface of the B plate, and the bottom surface of the bolt installed on the fixing column is not lower than the bottom surface of the fixing column.
7. The secondary mold clamping structure used in a HUD mold according to claim 1, characterized in that: A plurality of the mold clamping components are arranged around the lower mold core.