Structure for improving surface shrinkage of rubber column

Abstract

The utility model relates to a structure for improving surface shrinkage of a rubber column, which comprises a panel and a stud, the stud is integrally connected to the top of the panel, a waist groove is arranged at the joint of the periphery of the bottom of the stud and the panel, the distance A from the bottom of the waist groove to the bottom surface of the panel is smaller than the thickness T of the panel, and A is smaller than or equal to 0.8 T. According to the scheme, the structural optimization scheme of the rubber column product is described, the surrounding waist groove is formed in the connecting position of the periphery of the bottom of the stud and the panel, the thickness of the waist groove is smaller than that of the panel, and therefore the effect of preventing shrinkage is achieved, and the improved structure has the effects of facilitating injection molding production and reducing the risk of product shrinkage.

Description

Technical Field

[0001] The utility model relates to the technical field of product design, in particular to a structure for improving the surface shrinkage of a glue column. Background Art

[0002] In the actual product design process, the appearance of the product will be given priority. A good-looking product will give people a visual impact and leave a deep impression. Therefore, the first step in our product design process is to design the ID first, and then the structure design. In actual production, there will be many problems on the surface of plastic products, such as shrinkage, thickness marks, lack of glue, welding marks, etc.

[0003] Shrinkage refers to the concave defect on the surface of plastic parts. It is a defect that occurs frequently in injection molding and is also very difficult to eliminate. Shrinkage will cause the appearance of plastic parts to be concave and uneven, seriously affecting the appearance of the product. Some serious shrinkage cannot be covered by surface treatment. If the surface of the product is treated with a bright finish, the defect will be magnified.

[0004] Plastic needs to be cooled when it is formed by the mold, which causes shrinkage. If the thickness of the plastic product is inconsistent or the injection molding parameters are not adjusted correctly, different degrees of shrinkage will occur on the surface of the product. The thin wall cools quickly and shrinks less; the thick wall cools slowly and shrinks more, resulting in shrinkage. In severe cases, the shrinkage will leave different degrees of depressions and holes on the surface.

[0005] The glue column is a common structure in product design. It is usually an important component such as a plug-in or screw fixing. However, the current products often have shrinkage and depression at the bottom of the glue column, which affects the product performance and appearance quality. Figure 1 shown.

[0006] The solution to shrinkage should be solved comprehensively from the perspective of structural design, mold design, and adjustment of injection molding parameters, but the primary method is to solve the problem of structural design, because mold design and adjustment of injection molding parameters are subsequent remedial measures. If the structural design is poor, subsequent remediation will be difficult to handle. Utility Model Content

[0007] The purpose of the utility model is to provide a structure for improving the shrinkage of the surface of a rubber column, so as to solve the problems encountered in the above-mentioned background technology.

[0008] To achieve the above purpose, the technical solution of the utility model is as follows:

[0009] A structure for improving the shrinkage of the surface of a rubber column comprises a panel and a stud, wherein the stud is integrally connected to the top of the panel, and a waist groove is provided at the connection between the outer periphery of the bottom of the stud and the panel, and the distance A from the bottom of the waist groove to the bottom surface of the panel is less than the thickness T of the panel, wherein A≤0.8T. Preferably, the distance A from the bottom of the waist groove to the bottom surface of the panel is ≤0.6T.

[0010] In the above solution, the outer peripheral surface of the waist groove is provided with a slope, and the slope extends upwardly to the top surface of the panel. As a preferred solution, the slope is inclined upward by 20-40 degrees.

[0011] In the above solution, a screw hole is provided inside the stud, a bottom plate is provided between the bottom of the screw hole and the bottom surface of the panel, and the thickness t of the bottom plate is less than the thickness T of the panel, wherein t≤0.8T. As a preferred solution, the thickness t of the bottom plate is ≤0.6T.

[0012] Compared with the prior art, the beneficial effect of the utility model is that many product engineers ignore the shrinkage problem when designing products. Most of them find problems after the products are made, and improve the products through later remedial measures such as modifying the mold and adjusting the injection molding parameters, without avoiding risks from the structural design stage. This scheme describes the structural optimization scheme of the glue column product, by setting a surrounding waist groove at the connection between the bottom periphery of the stud and the panel, and the thickness of the waist groove is smaller than that of the panel, so as to prevent shrinkage. This improved structure has the effect of facilitating injection molding production and reducing the risk of product shrinkage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0014] Figure 1 It is a structural schematic diagram in the prior art;

[0015] Figure 2 It is a structural schematic diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model.

[0017] Numbers in the figure: 1- panel; 2- stud; 3- screw hole; 4- waist groove; 5- slope; 6- bottom plate. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects of the utility model easier to understand, the utility model is now further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the relevant components of the utility model.

[0019] According to the technical solution of the utility model, without changing the essential spirit of the utility model, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction to the technical solution of the utility model.

[0020] The technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] like Figure 2 and Figure 3 As shown, a structure for improving the surface shrinkage of the plastic column includes a panel 1 and a stud 2. The stud 2 is a cylindrical structure. The stud 2 is integrally connected to the top of the panel 1. A screw hole 3 is provided inside the stud 2. After screwing the screw, the panel 1 can be fixed together with other shell structures. This is a common fixing structure for plastic shells at present.

[0022] A waist groove 4 is provided at the connection between the bottom periphery of the stud 2 and the panel 1. The waist groove 4 is arranged around the stud 2. The distance A from the bottom of the waist groove 4 to the bottom surface of the panel 1 is less than the thickness T of the panel 1, where A≤0.8T. In specific implementation, the distance from the bottom of the waist groove 4 to the bottom surface of the panel 1 can be set to A≤0.6T. By reducing the thickness of this part, shrinkage and concavity can be prevented, thereby ensuring product performance and appearance quality.

[0023] Furthermore, a slope 5 is provided on the outer peripheral surface of the waist groove 4, and the slope 5 extends upwardly to the top surface of the panel 1. As a preferred solution, the slope 5 is inclined upward by 20-40 degrees. The setting of the slope 5 facilitates the injection of hot melt material into the lower part of the waist groove 4 during injection molding, thereby preventing shrinkage. In addition, the slope 5 also facilitates demolding after injection molding and reduces burrs generated after the plastic product is made.

[0024] In the above solution, a bottom plate 6 is provided between the bottom of the screw hole 3 and the bottom surface of the panel 1, and the thickness t of the bottom plate 6 is less than the thickness T of the panel 1, wherein t≤0.8T. As a preferred solution, the thickness t of the bottom plate 6 is t≤0.6T, that is, the thickness t of the bottom plate 6 is equal to the distance A from the bottom of the waist groove 4 to the bottom surface of the panel 1, that is, t=A.

[0025] Many product engineers ignore shrinkage issues when designing products. Most of them discover problems after the products are made, and improve the products through later remedial measures such as modifying the mold and adjusting the injection molding parameters, without avoiding risks from the structural design stage. This solution describes the structural optimization of the glue column product, by setting a surrounding waist groove 4 at the connection between the bottom periphery of the stud 2 and the panel 1. The thickness of the waist groove 4 is smaller than that of the panel 1, so as to prevent shrinkage. This improved structure facilitates injection molding production and reduces the risk of product shrinkage.

[0026] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A structure for improving the shrinkage of a rubber column surface, comprising a panel (1) and a stud (2), wherein the stud (2) is integrally connected to the top of the panel (1), and is characterized in that: A waist groove (4) is provided at the connection between the bottom periphery of the stud (2) and the panel (1), and the distance A from the bottom of the waist groove (4) to the bottom surface of the panel (1) is less than the thickness T of the panel (1), wherein A≤0.8T.

2. The structure for improving the shrinkage of the rubber column surface according to claim 1, characterized in that: The distance A from the bottom of the waist groove (4) to the bottom surface of the panel (1) is ≤0.6T.

3. The structure for improving the shrinkage of the rubber column surface according to claim 1, characterized in that: The outer peripheral surface of the waist groove (4) is provided with a slope (5), and the slope (5) extends obliquely upward to the top surface of the panel (1).

4. The structure for improving the shrinkage of the rubber column surface according to claim 3, characterized in that: The slope (5) is inclined upward by 20-40 degrees.

5. The structure for improving the shrinkage of the rubber column surface according to claim 1, characterized in that: A screw hole (3) is provided inside the stud (2), a bottom plate (6) is provided between the bottom of the screw hole (3) and the bottom surface of the panel (1), and a thickness t of the bottom plate (6) is less than a thickness T of the panel (1), wherein t≤0.8T.

6. The structure for improving the shrinkage of the rubber column surface according to claim 5, characterized in that: The thickness of the bottom plate (6) is t≤0.6T.

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