In-mold injection molding material tape for metal thin-wall product

Abstract

The utility model discloses an in-mold injection molding material strip for a metal thin-wall product. The in-mold injection molding material strip comprises a material strip body, the coil is wound on a tray; the plurality of hollow positions are sequentially arranged on the material belt body along the length direction of the material belt body; metal wires are arranged in the hollow positions; the connecting belt assembly is located in the hollow-out position and arranged between the metal wire and the material belt body; the connecting belt assembly is connected with the metal wire and the material belt body and used for bearing an injection molding solution during in-mold injection molding so as to form a rubber ring on the periphery of the metal wire. The metal wires are fixed on the material belt body to form the material belt with the metal wires, and the material belt with the metal wires is placed in the injection mold, so that during injection molding, the structure of the metal wires can be additionally supported, and the material belt body and the connecting belt assembly can disperse local pressure generated by the injection mold; the metal wire is ensured to be uniformly stressed when being pressed, so that the deformation caused by stress concentration is reduced, and the purpose of improving the production yield of metal thin-wall products is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal thin-wall product processing, in particular to an in-mold injectable plastic strip used for metal thin-wall products. Background Art

[0002] like Figure 1 As shown, the metal thin-walled product includes a metal wire 100 and a rubber ring 200 arranged on the periphery of the metal wire 100. In the prior art, when preparing the metal thin-walled product, the metal wire 100 is usually directly placed in an injection mold, and the rubber ring 200 is injection-molded around the metal wire. However, since the metal wire 100 itself has a relatively thin wall thickness, after the metal wire 100 is placed in the injection mold, it is very easy to cause deformation of the metal wire 100 under the action of pressure such as extrusion, resulting in a reduction in the production yield of the metal thin-walled product.

[0003] Therefore, the existing technology still needs to be improved and developed. Utility Model Content

[0004] The technical problem to be solved by the present invention is that, in response to the above-mentioned defects of the prior art, an in-mold injectable plastic strip for metal thin-walled products is provided, aiming to reduce the deformation rate of the metal wire and improve the production yield of the metal thin-walled products.

[0005] The technical solutions adopted by the present invention to solve the technical problems are as follows:

[0006] An in-mold injectable plastic strip for thin-walled metal products, comprising:

[0007] The material strip body is used to be wound on the material reel;

[0008] A plurality of hollow positions are sequentially arranged on the material strip body along the length direction of the material strip body; metal wires are arranged in the hollow positions;

[0009] A connecting belt assembly is located in the hollow position and arranged between the metal wire and the material belt body; the connecting belt assembly is connected to the metal wire and the material belt body respectively, and is used to carry the injection molding solution during in-mold injection molding to form a rubber ring around the metal wire.

[0010] The in-mold injectable plastic belt for metal thin-walled products, wherein the connecting belt assembly includes:

[0011] Two connecting belt units are distributed on both sides of the metal wire along the width direction of the material belt body; the connecting belt unit includes a plurality of connecting belts, and the plurality of connecting belts are arranged at intervals.

[0012] The in-mold injectable plastic strip for metal thin-wall products further comprises:

[0013] Two positioning hole units are distributed on both sides of the hollow position along the width direction of the material strip body; the positioning hole unit includes a plurality of positioning holes, and the plurality of positioning holes are arranged in sequence and at intervals along the length direction of the material strip body.

[0014] The in-mold injectable plastic strip for metal thin-wall products further comprises:

[0015] A plurality of stress release holes are located between the positioning hole unit and the hollow position and are sequentially spaced along the length direction of the material strip body; the stress release holes correspond to the hollow positions one by one.

[0016] The in-mold injectable plastic belt for metal thin-walled products, wherein the stress relief hole is a U-shaped hole; the opening of the U-shaped hole is arranged toward the hollow position and corresponds to the connecting belt unit.

[0017] The in-mold injectable plastic strip for metal thin-wall products further comprises:

[0018] Two notch units are distributed at the outer edge of the material strip body along the width direction of the material strip body; the notch unit includes a plurality of notches, and the plurality of notches are sequentially spaced and arranged along the length direction of the material strip body.

[0019] The in-mold injectable plastic strip for metal thin-wall products, wherein a gap is correspondingly arranged between every two positioning holes in the positioning hole unit.

[0020] The in-mold injectable plastic strip for metal thin-wall products, wherein the notches in the two notch units are arranged in a staggered manner.

[0021] The in-mold injectable plastic tape for metal thin-wall products, wherein the rubber ring is a liquid crystal polymer glass fiber composite rubber ring.

[0022] Beneficial effect: In the present application, when preparing the rubber ring through the injection molding process, the independent metal wire is not directly placed in the injection mold as in the prior art, but the metal wire is fixed on the material strip body to form a material strip with metal wire, and the material strip with metal wire is placed in the injection mold; during injection molding, the structure of the metal wire can obtain additional support, and the material strip body and the connecting belt assembly can disperse the local pressure generated by the injection mold, ensuring that the metal wire maintains a uniform stress state when under pressure, thereby reducing deformation caused by stress concentration and achieving the purpose of improving the production yield of metal thin-walled products. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of a metal thin-walled product;

[0024] Figure 2It is a schematic diagram of a portion of the structure of the in-mold injectable plastic strip for metal thin-walled products when the rubber ring is not injected;

[0025] Figure 3 It is a partial structural schematic diagram of the in-mold injectable plastic strip for metal thin-wall products after the rubber ring is formed by injection molding and the metal thin-wall product is obtained. DETAILED DESCRIPTION

[0026] The following describes the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are intended solely to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0027] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. Therefore, the drawings only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0028] The present application provides an in-mold injectable plastic strip for metal thin-wall products, such as Figure 2 and Figure 3 As shown, the in-mold injectable plastic strip for metal thin-wall products includes a strip body 1, a connecting strip assembly 3 and a plurality of hollow positions 2; the strip body 1 is used to be wound on a material tray; the plurality of hollow positions 2 are arranged along the length direction of the strip body 1 (such as Figure 3 As shown) are arranged in sequence on the material strip body 1; a metal wire 100 is arranged in the hollow position 2; the connecting belt assembly 3 is located in the hollow position 2 and is arranged between the metal wire 100 and the material strip body 1; the connecting belt assembly 3 is connected to the metal wire 100 and the material strip body 1 respectively, and is used to carry the injection molding solution during in-mold injection molding to form a rubber ring 200 around the metal wire 100.

[0029] Specifically, the material strip body 1 can carry a plurality of the metal wires 100, and the metal wires 100 are connected to the material strip body 1 through the connecting belt assembly 3, thereby achieving the positioning of the plurality of metal wires 100 on the material strip body 1. The material strip body 1 is also used to be wound on a material tray, and the material strip body 1 equipped with a plurality of the metal wires 100 can be wound to form an integral winding structure, thereby reducing its occupied space. The connecting belt assembly 3 not only supports and positions the metal wires 100, but also carries the injection molding solution, thereby forming the rubber ring 200 on the periphery of the metal wire 100. After the rubber ring 200 is prepared, the connection between the connecting belt assembly 3 and the rubber ring 200 is cut off to obtain the final metal thin-walled product.

[0030] When preparing the rubber ring 200, the position of the in-mold injectable plastic strip for metal thin-walled products corresponding to the metal wire 100 is placed as a whole into the injection mold. After the mold is closed and pressure-maintained injection molding is performed, the rubber ring 200 can be formed on the periphery of the metal wire 100; then the injection mold is opened, and the in-mold injectable plastic strip for metal thin-walled products is ejected using an ejector pin, and the material strip body 1 is transferred to the punching position, and the connection between the rubber ring 200 and the connecting strip assembly 3 is punched, so that the overall structure composed of the rubber ring 200 and the metal wire 100 is separated from the material strip body 1, and the final metal thin-walled product can be obtained.

[0031] It can be seen that in the present application, when the rubber ring 200 is prepared by the injection molding process, the independent metal wire 100 is not directly placed into the injection mold as in the prior art, but the metal wire 100 is fixed on the material strip body 1 to form a material strip with the metal wire 100, and the material strip with the metal wire 100 (such as Figure 2 As shown in the figure, the metal wire 100 is placed into the injection mold; during injection molding, the structure of the metal wire 100 can obtain additional support, and the material strip body 1 and the connecting strip assembly 3 can disperse the local pressure generated by the injection mold, ensuring that the metal wire 100 maintains a uniform stress state when under pressure, thereby reducing the deformation caused by stress concentration and achieving the purpose of improving the production yield of metal thin-walled products.

[0032] It can be understood that the mold used for in-mold injection molding in this application is a remade mold to adapt to the overall structure of the in-mold injectable plastic strip for metal thin-walled products, ensuring that the part of the in-mold injectable plastic strip for metal thin-walled products corresponding to the metal wire 100 is placed in the mold to form a closed environment to avoid leakage of the injection molding solution.

[0033] It should be noted that the shape structure of the metal wire 100 can be any other shape designed according to actual needs, and is not limited to the shape structure of the metal wire 100 illustrated in this application; the shape structure of the metal wire 100 illustrated in this application is only for example.

[0034] In one embodiment of the present application, the material strip body 1 and the metal wire 100 are an integrally formed structure; that is, the material strip body 1 can be made of the same material as the metal wire 100, but can be wound on a material reel.

[0035] The connecting belt assembly 3 includes two connecting belt units, which are arranged along the width direction of the material belt body 1 (such as Figure 3 The connecting belt unit is located on one side of the long side of the metal wire 100 and connects the long side of the metal wire 100 to the material strip body 1; while the space between the short side of the metal wire 100 and the material strip body 1 is hollow.

[0036] The connecting belt unit is only provided at the long side of the metal wire 100, while the short side of the metal wire 100 is hollowed out. This can ensure the connection stability between the metal wire 100 and the material belt body 1 while reducing the material on the material belt that is contained in the injection mold when the rubber ring 200 is injection molded, thereby ensuring the airtightness of the injection mold during the injection molding process and avoiding leakage of the injection molding solution.

[0037] Specifically, the connecting belt unit includes a plurality of connecting belts 31, which are arranged at intervals. The ends of the connecting belts 31 are respectively connected to the metal wire 100 and the material strip body 1, thereby positioning the metal wire 100 in the hollow portion 2 while minimizing the contact area between the connecting belt assembly 3 and the metal wire 100, so as to facilitate punching and separation of the rubber ring 200 from the connecting belt assembly 3 after the rubber ring 200 is prepared.

[0038] The in-mold injectable plastic strip for thin-walled metal products further includes two positioning hole units, which are distributed along the width direction of the strip body 1 on both sides of the hollow position 2. The positioning hole units include a plurality of positioning holes 5, which are sequentially spaced along the length direction of the strip body 1.

[0039] Specifically, the positioning holes 5 are provided on the strip body 1 and are located outside the hollowed-out portion 2. In the positioning hole unit, a plurality of positioning holes 5 are sequentially spaced apart along the length of the strip body 1. The positioning holes 5 are configured to cooperate with positioning pins or columns on a conveying device to prevent the strip body 1 from shifting during conveyance, ensuring that the connection between the connecting belt assembly 3 and the rubber ring 200 accurately aligns with the punching position during transport, and further ensuring that the strip body 1 remains accurately positioned during other processing steps.

[0040] In one embodiment of the present application, the in-mold injectable plastic strip for metal thin-walled products also includes a plurality of stress relief holes 4, which are located between the positioning hole unit and the hollow position 2, and are arranged in sequence along the length direction of the material strip body 1; the stress relief holes 4 correspond one-to-one to the hollow position 2.

[0041] Specifically, since the material strip body 1 needs to be wound on a material disc, and the material strip body 1 needs to be able to produce a certain deformation during winding, but it is necessary to ensure the strength of the material strip body 1 itself and not to break or the like, the stress release hole 4 is provided on the material strip body 1 in this embodiment to enhance the rigidity of the material strip body 1 and prevent the material strip body 1 from being excessively deformed or bent due to stress during winding or processing.

[0042] At the same time, the stress release hole 4 corresponds to the hollow position 2, that is, corresponds to the metal wire 100. When the material strip body 1 is wound on the material disc, the stress release hole 4 helps to protect the metal wire 100 fixed on the material strip body 1 from being damaged.

[0043] Furthermore, the stress relief holes 4 can also reduce the weight of the strip body 1, thereby saving material costs without affecting the overall structural strength of the in-mold injectable plastic strip for thin-walled metal products. The stress relief holes 4 can also disperse the stress generated during the rotation and use of the strip roll, preventing material breakage or localized wear.

[0044] In one implementation of this embodiment, the stress release hole 4 is a U-shaped hole; the opening of the U-shaped hole is arranged toward the hollow position 2 and corresponds to the connecting belt unit.

[0045] Specifically, the opening of the U-shaped hole corresponds to the connecting belt unit, thereby increasing the material area of ​​the portion of the strip body 1 near the connecting belt 31, thereby ensuring the connection strength between the connecting belt 31 and the strip body 1. Therefore, the U-shaped structure of the stress relief hole 4 can not only relieve stress but also ensure the connection strength between the metal wire 100 and the strip body 1.

[0046] In one embodiment of the present application, the in-mold injectable plastic strip for metal thin-walled products also includes two notch units, which are distributed on the outer edge of the strip body 1 along the width direction of the strip body 1; the notch unit includes a plurality of notches 6, and the plurality of notches 6 are arranged in sequence along the length direction of the strip body 1.

[0047] Specifically, the notch 6 is provided on the material strip body 1 and is located at the outer edge of the material strip body 1, and the positioning hole unit is located between the notch unit and the hollow position 2. Since the material strip body 1 is wound along the length direction when it is wound on the material reel, in this embodiment, the notch 6 is provided on the outer edge of the material strip body 1, and multiple notches 6 in the notch unit are arranged in sequence along the length direction of the material strip body 1. This further reduces the stress generated by the material strip body 1 during winding, reducing the risk of excessive deformation or cracking of the outer edge of the material strip body 1 during winding.

[0048] In one implementation of this embodiment, a gap 6 is correspondingly arranged between every two positioning holes 5 in the positioning hole unit.

[0049] Specifically, the positioning holes 5 are used to secure and guide the strip body 1 during transport, while the notches 6 are used to disperse stress. If the positioning holes 5 and notches 6 were aligned one-to-one, the structural strength of the area of ​​the strip body 1 corresponding to the notches 6 and positioning holes 5 would be weakened, thereby increasing the risk of excessive deformation or rupture of the strip body 1 in this area. Therefore, in this embodiment, the positioning holes 5 and notches 6 in the positioning hole unit and the notch unit are offset from each other, and a notch 6 is arranged between every two positioning holes 5 in the positioning hole unit. This ensures the overall strength and stability of the in-mold injectable plastic strip for thin-walled metal products while ensuring stable transport and stress dispersion.

[0050] In one implementation of this embodiment, the notches 6 in the two notch units are staggered.

[0051] Specifically, when the strip body 1 is installed in reverse, positioning or processing may not be required when it is subsequently transported for injection molding or punching, resulting in the product failing to meet design requirements. In injection molding and stamping processes, the orientation of the strip is closely related to process requirements, and reverse installation can lead to misalignment, deformation, or inability to complete processing, directly affecting product quality. Therefore, in this embodiment, the notches 6 in the two notch units are staggered to more accurately determine the correct position of the strip and avoid reverse or misaligned installation. This asymmetric design provides an additional error-proofing mechanism, making it easier to identify the strip's orientation.

[0052] In one embodiment of the present application, the rubber ring 200 is a liquid crystal polymer glass fiber composite rubber ring 200 .

[0053] Specifically, the rubber ring 200 is made from a composite material of liquid crystal polymer (LCP) and glass fiber (GF), ensuring high strength, heat resistance, and excellent chemical resistance. The glass fiber content is 35%. LCP itself has excellent mechanical properties, and the addition of 35% glass fiber allows the rubber ring 200 to withstand higher mechanical loads and stresses, making it more suitable for high-strength applications.

[0054] In summary, the present application provides an in-mold injectable plastic strip for metal thin-walled products, which includes: a strip body; used for winding on a material tray; a plurality of hollow positions, which are arranged in sequence on the strip body along the length direction of the strip body; metal wires are arranged in the hollow positions; a connecting strip assembly, located in the hollow positions and arranged between the metal wire and the strip body; the connecting strip assembly is respectively connected to the metal wire and the strip body, and is used to carry the injection molding solution during in-mold injection molding to form a rubber ring around the metal wire. In the present application, when preparing the rubber ring through the injection molding process, unlike the prior art, an independent metal wire is not directly placed in the injection mold, but the metal wire is fixed on the material strip body to form a material strip with metal wire, and the material strip with metal wire is placed in the injection mold; during injection molding, the structure of the metal wire can obtain additional support, and the material strip body and the connecting belt assembly can disperse the local pressure generated by the injection mold, ensuring that the metal wire maintains a uniform stress state when under pressure, thereby reducing deformation caused by stress concentration and achieving the purpose of improving the production yield of metal thin-walled products.

[0055] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, they can make improvements or changes based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. An in-mold injectable plastic strip for thin-walled metal products, characterized in that: It includes: The material strip body is used to be wound on the material reel; A plurality of hollow positions are sequentially arranged on the material strip body along the length direction of the material strip body; metal wires are arranged in the hollow positions; A connecting belt assembly is located in the hollow position and arranged between the metal wire and the material belt body; the connecting belt assembly is connected to the metal wire and the material belt body respectively, and is used to carry the injection molding solution during in-mold injection molding to form a rubber ring around the metal wire.

2. The in-mold injectable plastic strip for thin-walled metal products according to claim 1, characterized in that: The connecting belt assembly includes: Two connecting belt units are distributed on both sides of the metal wire along the width direction of the material belt body; the connecting belt unit includes a plurality of connecting belts, and the plurality of connecting belts are arranged at intervals.

3. The in-mold injectable plastic strip for thin-walled metal products according to claim 2, characterized in that: It also includes: Two positioning hole units are distributed on both sides of the hollow position along the width direction of the material strip body; the positioning hole unit includes a plurality of positioning holes, and the plurality of positioning holes are arranged in sequence and at intervals along the length direction of the material strip body.

4. The in-mold injectable plastic strip for thin-walled metal products according to claim 3, characterized in that: It also includes: A plurality of stress release holes are located between the positioning hole unit and the hollow position and are sequentially spaced along the length direction of the material strip body; the stress release holes correspond to the hollow positions one by one.

5. The in-mold injectable plastic strip for thin-walled metal products according to claim 4, characterized in that: The stress release hole is a U-shaped hole; the opening of the U-shaped hole is arranged toward the hollow position and corresponds to the connecting belt unit.

6. The in-mold injectable plastic strip for thin-walled metal products according to claim 3, characterized in that: It also includes: Two notch units are distributed at the outer edge of the material strip body along the width direction of the material strip body; the notch unit includes a plurality of notches, and the plurality of notches are sequentially spaced and arranged along the length direction of the material strip body.

7. The in-mold injectable plastic strip for thin-walled metal products according to claim 6, characterized in that: A gap is correspondingly arranged between every two positioning holes in the positioning hole unit.

8. The in-mold injectable plastic strip for thin-walled metal products according to claim 6, characterized in that: The gaps in the two gap units are staggered.

9. The in-mold injectable plastic strip for thin-walled metal products according to claim 1, characterized in that: The rubber ring is a liquid crystal polymer glass fiber composite rubber ring.

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