PE film butt joint mould for sealing strip

Abstract

This utility model relates to a PE film butt joint mold for sealing strips, used to fix the ends of two sealing strip bodies together via PE film. It includes two sets of mold bodies, each comprising an upper mold base and a lower mold base arranged vertically. A cavity for accommodating the sealing strip body is formed between the upper and lower mold bases of each set of mold bodies. A stop is formed on the butt joint end face of the lower mold base to abut against the tape portion of the sealing strip body. The butt joint ends of the two sets of mold bodies are oppositely arranged and can move relative to each other, allowing the two sealing strip bodies to move closer or further apart. By providing a stop on the butt joint end face of the lower mold base, this utility model can separate the tape portion from the PE film during sealing strip butt joint, effectively preventing the PE film from adhering to the tape surface during the heating butt joint process, thus avoiding the problem of PE film residue in the tape. Furthermore, since adhesion between the PE film and the tape portion is avoided, manual film removal is unnecessary after butt joint, thereby improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sealing strip processing technology, specifically to a PE film mating mold for sealing strips. Background Technology

[0002] Sealing strips are widely used in industries such as automotive, home appliances, and construction. They are typically made of rubber, PVC, or composite materials and are used to achieve functions such as waterproofing, dustproofing, sound insulation, and shock absorption. To meet production and installation requirements, sealing strips are often produced in segments, and then the two ends are joined together using a butt welding machine to form a closed loop or a monolithic structure of a specific length.

[0003] Existing sealing strip mating processes typically use PE film as an auxiliary medium. The two ends of the sealing strip are placed in a mold, clamped by the PE film, and pulled to the mating position. The PE film is then heated and pressed together using the mold to form a complete sealing strip. To improve the sealing performance, 3M tape is usually applied to the sealing strip to secure it to the mating components.

[0004] However, in the existing technology, because the PE film covers the surface of the sealing strip during the docking process, it is easy to stick to the 3M tape. This results in PE film residue in the middle of the tape after docking, which needs to be picked out manually. This adds extra steps, reduces production efficiency, and can easily cause scratches or tape curling on the product, affecting product quality. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a PE film mating mold for sealing strips. This solves the problem that in related technologies, the PE film covers the surface of the sealing strip during the mating process and easily adheres to the 3M tape, resulting in residual PE film in the middle of the tape after mating. This requires manual removal, adding extra steps, reducing production efficiency, and easily causing scratches or tape curling, thus affecting product quality.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A PE film mating mold for sealing strips, used to fix the ends of two sealing strip bodies together via PE film mating, comprising:

[0008] Both sets of mold bodies include an upper mold base and a lower mold base arranged vertically. In each set of mold bodies, a cavity for accommodating the sealing strip body is formed between the upper mold base and the lower mold base. A stop block is formed on the mating end face of the lower mold base to abut against the tape portion of the sealing strip body.

[0009] The mating ends of the two sets of modules are arranged opposite each other and can move relative to each other so that the two sealing strip bodies move closer or further apart.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. By setting a stop on the mating end face of the lower mold base, the tape portion can be separated from the PE film during the mating of the sealing strips. This effectively prevents the PE film from adhering to the tape surface during the heating and mating process, thus avoiding the problem of PE film residue in the tape. Furthermore, since the adhesion between the PE film and the tape portion is avoided, there is no need for manual film removal after mating, thereby improving production efficiency.

[0012] Furthermore, the upper side of the lower mold base is provided with a first mold cavity, and the lower side of the upper mold base is provided with a second mold cavity. The first mold cavity and the second mold cavity correspond one-to-one and surround each other to form the cavity.

[0013] Furthermore, a positioning element is provided between the upper mold base and the lower mold base. The positioning element includes a positioning block formed on the upper mold base / lower mold base, and a positioning groove formed on the lower mold base / upper mold base in accordance with the positioning block.

[0014] Furthermore, a guide is provided between the two sets of mold bodies, the guide including a positioning hole formed in one of the mold bodies and a positioning pin formed in the other mold body to match the positioning hole.

[0015] Furthermore, the lower mold base is provided with mounting holes for fasteners to pass through and be mounted on the external drive component.

[0016] Furthermore, the lower mold base is also provided with a guide groove for sliding on the external driving component.

[0017] Furthermore, only one of the mold bodies is equipped with a blade assembly, the blade assembly including blades that conform to the contour shape of the cavity, the inner wall of the blades forming an extension of the cavity, and the blade assembly also including edge blades fixed to the edge of the upper mold base or the lower mold base. Attached Figure Description

[0018] Appendix Figure 1 : A schematic diagram of the sealing strip body in this embodiment;

[0019] Appendix Figure 2 This embodiment illustrates the exploded structure of the PE film connecting the sealing strip to the mold. Figure 1 ;

[0020] Appendix Figure 3 This embodiment illustrates the exploded structure of the PE film connecting the sealing strip to the mold. Figure 1 ;

[0021] Appendix Figure 4 This embodiment shows a schematic diagram of the structure after the sealing strip is joined with a PE film fitting mold.

[0022] Appendix Figure 5 Appendix Figure 2 A magnified view of a portion of the image;

[0023] Explanation of icon numbers:

[0024] 1. Sealing strip body; 11. Adhesive tape portion;

[0025] 2. Upper mold base; 21. Second mold cavity;

[0026] 3. Lower mold base; 31. First mold cavity; 32. Mounting hole; 33. Guide groove;

[0027] 4. Cavity;

[0028] 5. Stop;

[0029] 6. Positioning block;

[0030] 7. Positioning groove;

[0031] 8. Positioning holes;

[0032] 9. Positioning pin.

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the technical solutions of this utility model are further described below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.

[0035] In the description of this utility model, it should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the implementation conditions of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0036] like Figure 1-5 As shown, this utility model embodiment proposes a PE film mating mold for sealing strips, used to fix the ends of two sealing strip bodies 1 together via PE film mating. The PE film mating mold for sealing strips includes two sets of mold bodies, each including an upper mold base 2 and a lower mold base 3 arranged vertically. The upper mold base 2 and the lower mold base 3 of each set of mold bodies form a cavity 4 for accommodating the sealing strip body 1. The specific structural shape of the cavity 4 can be designed to vary according to the relative structures of different sealing strip bodies 1, and no limitation is made in the description of this embodiment. A stop 5 is formed on the mating end face of the lower mold base 3 to abut against the tape portion 11 of the sealing strip body 1. The mating ends of the two sets of mold bodies are arranged opposite each other and can move relative to each other so that the two sealing strip bodies 1 move closer or further apart.

[0037] In this embodiment of the invention, during use, the operator places two pre-made sealing strip bodies 1 into the cavities 4 of the two sets of mold bodies respectively. Specifically, during placement, the tape portion corresponding to the sealing strip body 1 abuts against the stop block 5 on the mating end face of the lower mold base 3 to prevent direct contact between the tape and the PE film. Next, the PE film is placed between the two sealing strips, and then the two sets of mold bodies are moved towards each other along the mating direction, so that the PE film forms a cover on the end surface of the sealing strip. Then, the heating mechanism (such as an electric heating element or a hot melt heating device installed in the mold) can be activated to heat the PE film, melting it and making it adhesive. At this time, due to the action of the stop block 5 of the lower mold base 3, the PE film will not extend into the tape portion 11 area, thus preventing the PE film from sticking to the 3M tape. Then, the two sets of mold bodies are continued to move towards each other, so that the two sealing strip bodies 1 are pressed together under the action of the molten PE film, completing the mating and fixing, forming an integral structure. After the PE film cools and solidifies, the mold is opened, and the mated sealing strip can be removed.

[0038] In this embodiment, to improve production efficiency, at least one cavity 4 is provided on each mold body. For example, in this embodiment, four cavities 4 are used. Compared to the method of using multiple sets of molds with a single cavity 4 in parallel, integrating multiple cavities 4 onto an integrated mold body can reduce the number of molds, equipment, and floor space, thereby reducing equipment investment and maintenance costs. It also allows for the simultaneous docking of multiple sealing strips in one pressing cycle, significantly increasing output per unit time and meeting the needs of assembly line-style batch processing. Furthermore, multiple cavities 4 can also correspond to sealing strip bodies 1 with different cross-sectional shapes or sizes, facilitating the adaptation of various specifications of sealing strip bodies 1 on the same mold set, thus enhancing the mold's applicability and reducing mold replacement frequency.

[0039] Specifically, such as Figure 2-3 As shown in this embodiment of the present invention, the upper side of the lower mold base 3 is provided with a first mold cavity 31, and the lower side of the upper mold base 2 is provided with a second mold cavity 21. The first mold cavity 31 and the second mold cavity 21 correspond one-to-one and enclose each other to form the cavity 4. By setting the first mold cavity 31 and the second mold cavity 21 on the upper mold base 2 and the lower mold base 3 respectively, and enclosing them to form a complete cavity 4 after closing, the processing accuracy of the mold cavity and the positioning stability of the sealing strip can be improved. It also facilitates the separate manufacturing and maintenance of the upper mold base 2 and the lower mold base 3, and enhances the structural versatility and processing efficiency of the mold.

[0040] Specifically, such as Figure 2-3 As shown in this embodiment of the present invention, a positioning element is provided between the upper mold base 2 and the lower mold base 3. The positioning element includes a positioning block 6 formed on the upper mold base 2 / lower mold base 3 and a positioning groove 7 formed on the lower mold base 3 / upper mold base 2 in accordance with the positioning block 6. By setting the above positioning element, it can be ensured that the cavity 4 of the upper mold base 2 and the lower mold base 3 is accurately aligned when closed, avoiding the docking deviation caused by misalignment, thereby improving the docking quality of the sealing strip and the product qualification rate.

[0041] Specifically, such as Figure 2-3 As shown in this embodiment of the present invention, a guide is provided between the two sets of mold bodies. The guide includes a positioning hole 8 formed in one of the mold bodies and a positioning pin 9 formed in the other mold body to match the positioning hole 8. Through the mutual cooperation between the positioning pin 9 and the positioning hole 8, the guiding positioning and limiting adjustment of the two sets of mold bodies during the docking process are realized, ensuring that the mold bodies move accurately along the predetermined trajectory and close during the docking process, thereby improving the consistency of the docking of the two sealing strip bodies 1.

[0042] In this embodiment, the guide members are four sets located between the two sets of mold bodies and arranged near the four corners. Of course, in another embodiment, they may be set in other quantities or other positions.

[0043] Specifically, such as Figure 2-4 As shown in this embodiment of the utility model, the lower mold base 3 is provided with a mounting hole 32 for fasteners to pass through and be installed on the external driving component, thereby realizing the stable installation of the lower mold base 3 and the cooperation action with the driving component. That is, the mold can move and be controlled with the external driving component during the docking process, and it is also convenient for the installation, disassembly and maintenance of the mold.

[0044] Secondly, the lower mold base 3 is also provided with a guide groove 33 for sliding on the external driving component. The guide groove 33 facilitates the adjustment of the position of the lower mold base 3 on the external driving component, so that the operator can install and disassemble the mold body or the sealing strip body 1.

[0045] In this embodiment, the number and shape of the mounting holes 32 are not limited, as long as they facilitate stable installation on the external drive component.

[0046] Based on the above solution, in one embodiment of this utility model, only one of the mold bodies is equipped with a blade assembly (not shown in the figure). The blade assembly includes blades that are consistent with the contour shape of the cavity 4. The inner wall of the blades forms an extension of the cavity 4. The blade assembly also includes edge blades fixed to the edge of the upper mold base 2 or the lower mold base 3. By squeezing and shearing the PE film through the blade assembly, the shape of the PE film is cut to be consistent with the shape of the cavity 4. At the same time, the edge blades cooperate with the blades to cut the PE film into upper and lower parts, making it easy to remove the remaining PE film.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A PE film butt mold for sealing strips, used to fix the ends of two sealing strip bodies (1) together via PE film butt welding, characterized in that, include: Both sets of mold bodies include an upper mold base (2) and a lower mold base (3) arranged vertically. Each set of mold bodies has a cavity (4) formed between the upper mold base (2) and the lower mold base (3) for accommodating the sealing strip body (1). The mating end face of the lower mold base (3) is formed with a stop (5) to abut against the tape portion (11) of the sealing strip body (1). The two sets of mold bodies are arranged opposite to each other and can move relative to each other so that the two sealing strip bodies (1) move closer or further apart.

2. The PE film butt mold for sealing strips according to claim 1, characterized in that, The upper side of the lower mold base (3) is provided with a first mold cavity (31), and the lower side of the upper mold base (2) is provided with a second mold cavity (21). The first mold cavity (31) and the second mold cavity (21) correspond one-to-one and surround each other to form the cavity (4).

3. The PE film butt mold for sealing strips according to claim 1, characterized in that, A positioning element is provided between the upper mold base (2) and the lower mold base (3). The positioning element includes a positioning block (6) formed on the upper mold base (2) / lower mold base (3) and a positioning groove (7) formed on the lower mold base (3) / upper mold base (2) in accordance with the positioning block (6).

4. The PE film butt mold for sealing strips according to claim 1, characterized in that, A guide is provided between the two sets of mold bodies, the guide including a positioning hole (8) formed in one of the mold bodies, and a positioning pin (9) formed in the other mold body in accordance with the positioning hole (8).

5. A PE film butt mold for sealing strips according to claim 1, characterized in that, The lower mold base (3) is provided with mounting holes (32) for fasteners to pass through and be installed on the external drive component.

6. A PE film butt mold for sealing strips according to claim 5, characterized in that, The lower mold base (3) is also provided with a guide groove (33) for sliding on the external driving component.

7. A PE film mating mold for sealing strips according to any one of claims 1-6, characterized in that, Only one of the mold bodies is equipped with a blade assembly, the blade assembly including blades that conform to the contour shape of the cavity (4), the inner wall of the blades forming an extension of the cavity (4), and the blade assembly also including edge blades fixed to the edge of the upper mold base (2) or the lower mold base (3).

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