Filler strip structure for double-layer full-plastic profile production

Abstract

The utility model relates to a filler strip structure for producing a double-layer full-plastic profile, which comprises a low-temperature-resistant plastic framework and a high-temperature-resistant plastic coating layer coated on the outer surface of the low-temperature-resistant plastic framework, and the high-temperature-resistant plastic coating layer and the low-temperature-resistant plastic framework are of a double-layer composite integrated structure formed by co-extrusion. The whole filler strip structure is made of a full-plastic material and is not made of a metal material, so that the production and manufacturing cost can be greatly reduced, the product selling price is also reduced, the market competitiveness is improved, the material can be directly crushed and reused after being recycled, and the recycling efficiency is improved; and the high-temperature-resistant plastic coating layer and the low-temperature-resistant plastic framework are of a double-layer composite integrated structure, so that the connection is very firm, no glue is used for bonding and fixing, the filler strip is very environment-friendly, and meanwhile, two plastic materials with different temperature-resistant ranges are adopted, so that the production and manufacturing cost of the filler strip product can be further reduced.

Description

Technical Field

[0001] This utility model relates to the field of non-ferrous metal processing parts technology, and in particular to a pad structure. Background Technology

[0002] Currently, during the stacking and transportation of non-ferrous metal profiles, several spacer strips are often used to separate the stacked layers of profiles, preventing friction and scratches between them, thus ensuring the surface of the profiles is not scratched or damaged and guaranteeing their quality. The applicant previously filed a patent application with the State Intellectual Property Office for a solution entitled "A Spacer Strip" (Publication No. CN209511579U, Patent No. CN201821745875.4). This solution mainly includes a metal skeleton strip and a plastic wrapping layer covering the outer surface of the skeleton. During manufacturing, the skeleton is made of metal, and the wrapping layer is made of high-temperature resistant plastic (the selection and application of these two materials can be found in Chinese Patent Application No. 201720561581.5, entitled "A Spacer Strip with a Skeleton"). While the aforementioned metal-framed plastic composite gasket products effectively ensure structural strength, they also have significant drawbacks, as follows: First, the metal frame is typically made of aluminum, resulting in relatively high material costs and weight, leading to higher selling prices, higher transportation costs, and weaker market competitiveness. Second, the plastic coating layer is wrapped around the outer surface of the metal frame. During manufacturing, adhesives or plastic heat-coating techniques are used to prevent the plastic coating layer from separating from the metal frame during use. However, when gaskets produced in this way are damaged and recycled, the plastic is difficult to separate from the metal frame, making it difficult to recycle the two materials separately. This process generates a significant amount of wastewater, consumes a large amount of electricity, resulting in high energy consumption, high recycling costs, and is detrimental to environmental protection. Therefore, given the aforementioned shortcomings of these gasket products, it is essential to improve them to better meet the application needs of profile manufacturers. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned problems and shortcomings, and to provide a double-layer all-plastic profile production pad structure. The pad structure is made entirely of plastic material, with no metal materials used, which can greatly reduce the production cost and the product price, thereby improving market competitiveness. After the material is recycled, it can be directly crushed and reused, which greatly improves the recycling efficiency. Moreover, the high-temperature resistant plastic coating layer and the low-temperature resistant plastic skeleton are a double-layer composite integrated structure with a very strong connection. There is no glue for fixing, which is very environmentally friendly. At the same time, the use of two plastic materials with different temperature resistance ranges can further reduce the production cost of the pad product.

[0004] The technical solution of this utility model is achieved as follows: a pad structure for producing double-layer all-plastic profiles, characterized in that it includes a low-temperature resistant plastic skeleton and a high-temperature resistant plastic coating layer covering the outer surface of the low-temperature resistant plastic skeleton. The high-temperature resistant plastic coating layer and the low-temperature resistant plastic skeleton are co-extruded into a double-layer composite integrated structure. The low-temperature resistant plastic skeleton is provided with a hollow cavity, and the hollow cavity is also provided with supporting reinforcing ribs. The low-temperature resistant plastic skeleton is composed of an upper horizontal piece, a lower horizontal piece, a left vertical piece, and a right vertical piece, and the hollow cavity is formed between the upper horizontal piece, the lower horizontal piece, the left vertical piece, and the right vertical piece.

[0005] Preferably, the radial cross-section of the high-temperature resistant plastic coating layer is rectangular, and the four corners of the high-temperature resistant plastic coating layer are respectively provided with a first rounded chamfer.

[0006] Preferably, the radial cross-section of the low-temperature resistant plastic skeleton is rectangular, and the four corners of the low-temperature resistant plastic skeleton are respectively provided with a second rounded chamfer that matches the first rounded chamfer.

[0007] Preferably, the wall thickness A of the high-temperature resistant plastic coating layer is less than or equal to the wall thickness B of the low-temperature resistant plastic skeleton.

[0008] Preferably, the outer surface of the high-temperature resistant plastic coating layer is further provided with a plurality of convex edges or concave grooves extending along its length direction, and the convex edges or concave grooves are arranged in parallel to each other.

[0009] Preferably, the radial cross-section of the convex edge or concave groove is a pointed-angle structure.

[0010] The beneficial effects of this utility model are as follows: By employing a high-temperature resistant plastic coating layer and a low-temperature resistant plastic skeleton, the entire gasket product is made of plastic, with no metal materials used. This significantly reduces the manufacturing cost of the gasket, thereby lowering its selling price and enhancing its market competitiveness. Furthermore, since both the high-temperature resistant plastic coating layer and the low-temperature resistant plastic skeleton are made of plastic, with no metal materials used, they can be directly crushed and reused after recycling, simplifying the recycling process and improving efficiency. Simultaneously, the high-temperature resistant plastic coating layer and the low-temperature resistant plastic skeleton are manufactured as a single unit through a co-extrusion molding process, ensuring a strong and secure connection that will not separate, eliminating the need for adhesive bonding and making it highly environmentally friendly. In addition, since the non-ferrous metal profile still has a high temperature after electroplating, the high-temperature resistant plastic coating layer can withstand this temperature, preventing the gasket surface from melting and sticking to the non-ferrous metal profile, thus ensuring the surface quality of the non-ferrous metal profile. Furthermore, since high-temperature resistant plastics are more expensive than low-temperature resistant plastics on the market, incorporating a low-temperature resistant plastic skeleton allows the main structure of the pad strip to be made entirely of low-temperature resistant plastic, thereby further reducing the production cost. The hollow cavity design further reduces the amount of material used in the low-temperature resistant plastic skeleton, thus lowering production costs. The reinforcing ribs provide excellent support, ensuring the hollow low-temperature resistant plastic skeleton maintains high structural strength and prevents collapse. The left and right vertical plates, along with the reinforcing ribs, ensure the upper and lower horizontal plates are not easily bent or deformed, maintaining high structural strength and guaranteeing a long service life. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of Scheme 1 of this utility model.

[0012] Figure 2 This is a cross-sectional structural diagram of Scheme 1 of this utility model.

[0013] Figure 3 This is a cross-sectional structural diagram of embodiment two of this utility model.

[0014] Figure 4 This is a cross-sectional structural diagram of embodiment three of this utility model.

[0015] Figure 5 This is a cross-sectional structural diagram of embodiment four of this utility model.

[0016] Figure 6 This is a cross-sectional structural diagram of embodiment five of this utility model.

[0017] Figure 7 This is a schematic diagram of the usage state of this utility model. Detailed Implementation

[0018] like Figure 1 As shown, the present invention discloses a double-layer all-plastic profile pad structure, comprising a low-temperature resistant plastic skeleton 1 and a high-temperature resistant plastic coating layer 2 covering the outer surface of the low-temperature resistant plastic skeleton 1. The high-temperature resistant plastic coating layer 2 and the low-temperature resistant plastic skeleton 1 are co-extruded into a double-layer composite integrated structure. The pad structure of this invention is entirely made of plastic, with no metal materials used, significantly reducing manufacturing costs and product prices, thereby enhancing market competitiveness. After material recycling, it can be directly crushed and reused, improving recycling efficiency. Furthermore, the high-temperature resistant plastic coating layer 2 and the low-temperature resistant plastic skeleton 1 are a double-layer composite integrated structure with a very strong connection, requiring no glue for fixation, making it very environmentally friendly. Simultaneously, the use of two plastic materials with different temperature resistance ranges further reduces the manufacturing cost of the pad product.

[0019] To prevent the edges and corners of the high-temperature resistant plastic coating layer 2 from scratching the non-ferrous metal profile, such as... Figure 2 As shown, the radial cross-section of the high-temperature resistant plastic coating layer 2 is rectangular, and the four corners of the high-temperature resistant plastic coating layer 2 are respectively provided with a first rounded chamfer 21.

[0020] To make the chamfer radius of the first arc-shaped chamfer 21 larger, such as Figure 2 As shown, the radial cross-section of the low-temperature resistant plastic frame 1 is rectangular, and each of the four corners of the low-temperature resistant plastic frame 1 is provided with a second arc-shaped chamfer 11 that matches the first arc-shaped chamfer 21. This improves the scratch resistance.

[0021] To further reduce the material usage of the low-temperature resistant plastic skeleton 1 while maintaining very high structural strength, thereby reducing manufacturing costs, such as... Figure 2 As shown, the low-temperature resistant plastic frame 1 has a hollow cavity 12, and the hollow cavity 12 is further provided with supporting reinforcing ribs 13. By providing supporting reinforcing ribs 13, a very good supporting effect is achieved, preventing the hollow low-temperature resistant plastic frame 1 from collapsing. In practical applications, such as... Figures 2 to 6 As shown, there are several supporting reinforcing ribs 13, and the arrangement shape of each supporting reinforcing rib 13 can be various. All of these enable the hollow, low-temperature resistant plastic skeleton 1 to possess very high structural strength.

[0022] like Figure 2As shown, the wall thickness A of the high-temperature resistant plastic coating layer 2 is less than or equal to the wall thickness B of the low-temperature resistant plastic skeleton 1. When the wall thickness A of the high-temperature resistant plastic coating layer 2 is equal to the wall thickness B of the low-temperature resistant plastic skeleton 1, the high-temperature resistance of the gasket is optimal. When the wall thickness A of the high-temperature resistant plastic coating layer 2 is less than the wall thickness B of the low-temperature resistant plastic skeleton 1, the material used in the high-temperature resistant plastic coating layer 2 can be further reduced, thereby further lowering the manufacturing cost of the gasket.

[0023] To further improve the structure of the low-temperature resistant plastic skeleton 1, such as Figure 2 As shown, the low-temperature resistant plastic frame 1 is composed of an upper horizontal piece 14, a lower horizontal piece 15, a left vertical piece 16, and a right vertical piece 17, with the hollow cavity 12 formed between them. The arrangement of the left vertical piece 16, the right vertical piece 17, and the supporting reinforcing ribs 13 ensures that the upper horizontal piece 14 and the lower horizontal piece 15 are not easily bent or deformed, exhibiting very high structural strength and thus guaranteeing a very good service life.

[0024] like Figure 2 As shown, the outer surface of the high-temperature resistant plastic coating layer 2 is also provided with several protruding edges 22 or concave grooves 23 extending along its length direction, and the protruding edges 22 or concave grooves 23 are arranged in parallel to each other. By providing the protruding edges 22 or concave grooves 23, the contact area with the non-ferrous metal profile can be effectively reduced, so as to facilitate the movement of the non-ferrous metal profile on the surface of the pad strip. Preferably, each protruding edge 22 or concave groove 23 is respectively provided on the upper surface and the lower surface of the high-temperature resistant plastic coating layer 2. The material application of the protruding edges 22 or concave grooves 23 can be reasonably arranged according to the stacking of non-ferrous metal profiles, so as to reasonably control the production and manufacturing costs.

[0025] like Figure 2 As shown, the radial cross-section of the convex edge 22 or the concave groove 23 is a pointed-angle structure. By providing the pointed-angle convex edge 22, the contact area between the convex edge 22 and the non-ferrous metal profile can be further reduced. By providing the pointed-angle concave groove 23, the contact area can be reduced without excessively compromising the structural strength of the low-temperature resistant plastic skeleton 1.

[0026] In practical applications, such as Figure 7 As shown, multiple spacers of this invention can be used to separate stacked non-ferrous metal profiles.

[0027] In practical applications, the high-temperature resistant plastic coating layer 2 is made of PP plastic (polypropylene), which has excellent high-temperature resistance, with a maximum heat resistance temperature of 163℃. The low-temperature resistant plastic skeleton 1 is made of PVC plastic (polyvinyl chloride), which has excellent low-temperature resistance, with a temperature range of -15℃ to 60℃.

Claims

1. A pad structure for producing double-layer all-plastic profiles, characterized in that: It includes a low-temperature resistant plastic skeleton (1) and a high-temperature resistant plastic coating layer (2) covering the outer surface of the low-temperature resistant plastic skeleton (1). The high-temperature resistant plastic coating layer (2) and the low-temperature resistant plastic skeleton (1) are a co-extruded double-layer composite integrated structure. The low-temperature resistant plastic skeleton (1) is provided with a hollow cavity (12), and the hollow cavity (12) is also provided with supporting reinforcing ribs (13). The low-temperature resistant plastic skeleton (1) is composed of an upper horizontal piece (14), a lower horizontal piece (15), a left vertical piece (16), and a right vertical piece (17), and the hollow cavity (12) is formed between the upper horizontal piece (14), the lower horizontal piece (15), the left vertical piece (16), and the right vertical piece (17).

2. The padding strip structure for producing double-layer all-plastic profiles according to claim 1, characterized in that: The radial cross-section of the high-temperature resistant plastic coating layer (2) is rectangular, and the four corners of the high-temperature resistant plastic coating layer (2) are respectively provided with a first rounded chamfer (21).

3. The padding strip structure for producing double-layer all-plastic profiles according to claim 2, characterized in that: The radial cross section of the low-temperature resistant plastic skeleton (1) is rectangular, and the four corners of the low-temperature resistant plastic skeleton (1) are respectively provided with a second arc chamfer (11) that matches the first arc chamfer (21).

4. The padding strip structure for producing double-layer all-plastic profiles according to claim 1, characterized in that: The wall thickness A of the high-temperature resistant plastic coating layer (2) is less than or equal to the wall thickness B of the low-temperature resistant plastic skeleton (1).

5. The padding strip structure for producing double-layer all-plastic profiles according to claim 1, characterized in that: The outer surface of the high-temperature resistant plastic coating layer (2) is also provided with a number of convex edges (22) or concave grooves (23) extending along its length direction, and the convex edges (22) or concave grooves (23) are arranged in parallel to each other.

6. The padding strip structure for producing double-layer all-plastic profiles according to claim 5, characterized in that: The radial cross-section of the convex edge (22) or concave groove (23) is a pointed structure.

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