Dual-purpose butt joint mold for sealing strip EPDM rubber sheet and rubber cement
By combining the design of cold mold pressing mold and hot mold heating mold, along with anti-collision buffer structure and slider, the problems of part imprinting, coating burn and cracking during the pressing process of existing molds are solved, thereby improving the appearance quality of parts and the appearance of joints.
Patent Information
- Application Number
- CN202423211054.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-24
AI Technical Summary
Existing mating molds are prone to causing part imprints, coating burns and cracks during the clamping process. They are especially difficult to clamp effectively when the cross-section fluctuates, resulting in joint damage and cracking.
The system employs a combination of cold mold clamping molds and hot mold heating molds. The cold mold clamping molds are symmetrically arranged, with the hot mold heating molds positioned in between. Combined with anti-collision buffer structures and slider designs, the system ensures the stability and safety of parts during the clamping and heating processes.
It improves the appearance quality of parts, prevents pressure damage and coating burns, improves the appearance of joints, and solves the limitations of old mold processes.
Smart Images
Figure CN223618287U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts technology, and in particular to a dual-purpose die for joining EPDM film and adhesive for sealing strips. Background Technology
[0002] Existing mating dies rely on anti-slip teeth or die shapes for clamping. However, the high temperature of the die causes indentations, scratches, and coating burns at the assembly points of the parts. The die clamping cannot effectively absorb the fluctuations in the extrusion cross-section, leading to joint damage and cracking. Therefore, there is an urgent need for a die that can better clamp the parts under conditions of cross-sectional fluctuations, thus resolving indentations, coating burns, and cracking. Utility Model Content
[0003] To address the issues of indentation, coating burns, and cracking caused by compression during component jointing, a dual-purpose EPDM film and adhesive die for sealing strips is proposed.
[0004] The technical solution of this utility model is: a dual-purpose EPDM film and adhesive joint mold for sealing strips, including a cold mold pressing mold and a hot mold heating mold. The cold mold pressing molds are symmetrically arranged, and two symmetrical hot mold heating molds are provided between the cold mold pressing molds.
[0005] Preferably, the cold mold clamping die includes an upper cold mold and a lower cold mold; the bottom of the upper cold mold has an upper cold mold cavity, and the top of the lower cold mold has a lower cold mold cavity.
[0006] Preferably, the lower cold mold is provided with a cold mold slider near the cavity of the lower cold mold.
[0007] Preferably, the hot mold heating mold includes an upper hot mold and a lower hot mold; the bottom of the upper hot mold is provided with an upper hot mold cavity, and the top of the lower hot mold is provided with a lower hot mold cavity.
[0008] Preferably, the lower hot mold is provided with a hot mold slider near the cavity of the lower hot mold.
[0009] Preferably, the upper and lower mold cavity of the hot mold are provided with cutting edges.
[0010] Preferably, the upper collision-resistant buffer structure is provided at the collision position on the upper side of the blade of the hot mold.
[0011] Preferably, the lower side of the blade of the hot mold lower model is provided with a lower anti-collision buffer structure at the collision position.
[0012] The beneficial effects of this utility model are as follows: This utility model improves the appearance of parts damaged by hot molds, coating burns and cracks, improves the appearance of joints, and solves the problem of the limitations of old mold processes. Attached Figure Description
[0013] Figure 1 This is a perspective view of the EPDM film and adhesive dual-purpose mating mold for the sealing strip of this utility model;
[0014] Figure 2 This is a schematic diagram of the cold mold clamping die of this utility model;
[0015] Figure 3 This is a schematic diagram of the heating mold and the position of the cutting edge of the hot mold of this utility model;
[0016] Figure 4 This is a schematic diagram of the heating mold of the present invention.
[0017] Figure 5 This is a side view of the EPDM film and adhesive dual-purpose mating mold for the sealing strip of this utility model.
[0018] The component names corresponding to the various reference numerals in the diagram are as follows:
[0019] 1. Cold mold clamping mold; 11. Cold mold upper model; 111. Cold mold upper model cavity; 12. Cold mold lower model; 121. Cold mold lower model cavity; 13. Cold mold slider; 2. Hot mold heating mold; 21. Hot mold upper model; 211. Hot mold upper model cavity; 212. Upper anti-collision buffer structure; 22. Hot mold lower model; 221. Hot mold lower model cavity; 222. Lower anti-collision buffer structure; 23. Hot mold slider; 24. Cutting edge. Detailed Implementation
[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.
[0021] refer to Figure 1 As shown, this utility model provides a dual-purpose EPDM film and adhesive mating mold for sealing strips, including a cold mold pressing mold 1 and a hot mold heating mold 2. The cold mold pressing molds 1 are symmetrically arranged, and two symmetrical hot mold heating molds 2 are provided between the cold mold pressing molds 1.
[0022] refer to Figure 2 , 5As shown, the cold mold clamping mold 1 includes an upper cold mold 11 and a lower cold mold 12. The bottom of the upper cold mold 11 is provided with multiple upper cold mold cavities 111. The size of the upper cold mold cavity 111 is smaller than the size of the part. In this example, the upper cold mold cavity 111 is designed to be 1.5mm smaller than the part. The top of the lower cold mold 12 is provided with multiple lower cold mold cavities 121. Multiple cold mold sliders 13 are provided on the lower cold mold 12 near the lower cold mold cavity 121. When the part is installed in the mold and the mold is pressed down to close, the cold mold sliders 13 apply a lateral force to press the clamping position of the lower cold mold 12. After the upper mold 11 is pressed down, it presses the part up and down. Thus, during the left and right mold closing process, the part will not be at risk of moving backward. After the mold is opened, the cold mold sliders 13 spring back, and the part can be easily removed.
[0023] refer to Figure 3 , 4 As shown, the hot mold heating mold 2 includes an upper hot mold 21 and a lower hot mold 22. The bottom of the upper hot mold 21 is provided with multiple upper hot mold cavities 211, and the top of the lower hot mold 22 is provided with multiple lower hot mold cavities 221. Multiple hot mold sliders 23 are provided on the lower hot mold 22 near the lower hot mold cavities 221. After the mold is opened, the hot mold sliders 23 retract, improving the mold removal efficiency. The size of the upper hot mold cavity 211 is larger than the size of the part. In this example, the upper hot mold cavity 211 is 0. The 3mm design prevents secondary vulcanization during the heating and vulcanization process, which could cause the foam in the part to swell, resulting in pressure damage to the foam and burns to the coating. The size of the lower mold cavity 221 is larger than the size of the part. In this example, the lower mold cavity 221 is 0.2mm larger than the part to prevent fluctuations in the extrusion cross-section of the part, which could lead to difficulties in assembly. The teeth of the lower mold cavity 221 are designed to be 1:1 with the part to avoid the risk of cracking due to misalignment of the teeth caused by the force exerted on the transverse hot mold slider 23.
[0024] Cutting edges 24 are provided around the upper mold cavity 211 and the lower mold cavity 221 of the hot mold, so that excess film can be cut off after the molds collide, improving trimming efficiency, ensuring appearance quality, and eliminating the risk of appearance defects caused by manual tearing and missing trimming. An upper anti-collision buffer structure 212 is provided on the upper side of the cutting edge 24 of the upper mold 21 at the collision position, and a lower anti-collision buffer structure 222 is provided on the lower side of the cutting edge 24 of the lower mold 22 at the collision position. The cutting edge 24 is designed with anti-collision buffer to prevent the cutting edge 24 of the mold from deforming and wearing due to the number of collisions.
[0025] The beneficial effects are: this utility model improves the appearance of parts damaged by hot molds, coating burns and cracks, improves the appearance of joints, and solves the problem of the limitations of old mold processes.
[0026] It should be noted that the terms "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. "A plurality of" means two or more. "Installed," "connected," and "joined" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection.
[0027] The above description is merely a preferred embodiment of this utility model and is not intended to limit this utility model in any form or substance. It should be noted that those skilled in the art can make various improvements and additions without departing from this utility model, and these improvements and additions should also be considered within the protection scope of this utility model. Any modifications, alterations, and equivalent changes made by those skilled in the art without departing from the spirit and scope of this utility model using the disclosed technical content are equivalent embodiments of this utility model. Furthermore, any modifications, alterations, and evolutions made to the above embodiments based on the essential technology of this utility model are still within the scope of the technical solution of this utility model.
Claims
1. A dual-purpose die for joining EPDM film and adhesive for sealing strips, characterized in that, It includes a cold mold pressing mold (1) and a hot mold heating mold (2). The cold mold pressing mold (1) is symmetrically arranged, and two symmetrical hot mold heating molds (2) are arranged between the cold mold pressing mold (1).
2. The dual-purpose EPDM film and adhesive die for sealing strips according to claim 1, characterized in that, The cold mold pressing mold (1) includes an upper cold mold (11) and a lower cold mold (12); the bottom of the upper cold mold (11) is provided with an upper cold mold cavity (111), and the top of the lower cold mold (12) is provided with a lower cold mold cavity (121).
3. The dual-purpose EPDM film and adhesive die for sealing strips according to claim 2, characterized in that, The lower cold mold (12) is provided with a cold mold slider (13) near the lower cold mold cavity (121).
4. The dual-purpose EPDM film and adhesive die for sealing strips according to claim 1, characterized in that, The hot mold heating mold (2) includes an upper hot mold (21) and a lower hot mold (22); the bottom of the upper hot mold (21) is provided with an upper hot mold cavity (211), and the top of the lower hot mold (22) is provided with a lower hot mold cavity (221).
5. The dual-purpose EPDM film and adhesive die for sealing strips according to claim 4, characterized in that, The lower hot mold (22) is provided with a hot mold slider (23) near the lower hot mold cavity (221).
6. The dual-purpose EPDM film and adhesive die for sealing strips according to claim 5, characterized in that, The upper model cavity (211) and the lower model cavity (221) of the hot mold are provided with cutting edges (24).
7. The dual-purpose EPDM film and adhesive die for sealing strips according to claim 6, characterized in that, The upper anti-collision buffer structure (212) is provided on the upper side of the collision position of the blade (24) of the hot mold upper model (21).
8. The dual-purpose EPDM film and adhesive die for sealing strips according to claim 7, characterized in that, The lower side of the blade (24) of the hot mold lower model (22) is provided with a lower anti-collision buffer structure (222).