Hardware injection molding part and injection molding structure thereof

Abstract

The utility model relates to a hardware injection molding part and an injection molding structure thereof in the field of injection molding, the middle part of a hardware body is provided with an opening, the inner walls of the opening are connected through a hardware connecting strip, an injection molding body is embedded into the opening, and the hardware connecting strip is wrapped by the injection molding body. A fixing plate is arranged on the top surface of the fixed mold plate, the fixing plate is detachably connected with the fixed mold plate, a matching opening is formed in the fixing plate, the matching opening, the upper mold cavity and the lower mold cavity are used for molding a hardware injection molding part, and the diameter of the matching opening is smaller than that of the hardware body. According to the hardware injection molding part, the hardware body, the opening and the hardware connecting strip are arranged, the injection molding body is embedded into the opening, the hardware connecting strip is wrapped by the injection molding body, and a structure that the hardware is clamped in the middle of injection molding plastic is formed, so that the problem that the hardware and the plastic are easy to separate after injection molding is effectively solved; and meanwhile, the hardware connecting strip also tightens the injection molding body, so that the injection molding body is connected with the hardware body more firmly.

Description

Technical Field

[0001] The utility model relates to the field of injection molding, in particular to a hardware injection molding part and an injection molding structure thereof. Background Art

[0002] Metal injection molding is an injection molding product that includes a metal body.

[0003] The existing problems of hardware injection molding parts are as follows: Generally, nano injection molding is required when injecting hardware injection molding parts. The reason is to solve the adhesion between the hardware and plastic after injection molding. In addition, the hardware body needs T treatment before injection molding. The injection molding material also needs to use special material PBT+20% GF, and the material cost is relatively high.

[0004] The existing injection molding structure used to manufacture hardware injection molded parts still has the following problems: nano injection molding has relatively high requirements for injection molds, so the cost of injection molds used to manufacture hardware injection molded parts is also relatively high. Utility Model Content

[0005] The purpose of the utility model is to solve the above defects and provide a hardware injection molded part.

[0006] The purpose of the utility model is achieved in the following way: a hardware injection molded part, comprising a hardware body and an injection molded body, wherein an opening is provided in the middle of the hardware body, the inner walls of the opening are connected by a hardware connecting strip, the injection molded body is embedded in the opening, and the injection molded body wraps the hardware connecting strip.

[0007] In the above description, as a further solution, the hardware connection strips are provided in a plurality of strips, and the plurality of hardware connection strips are evenly arranged between the inner walls of the opening.

[0008] In the above description, as a further solution, the hardware connecting strip is provided with a through hole, and the injection molded body covers the through hole.

[0009] In the above description, as a further solution, an edge is provided in the middle of the inner wall of the opening, and the injection molded body wraps the edge.

[0010] The injection molding structure includes a fixed mold plate and an upper mold plate. The upper mold plate is arranged on the top surface of the fixed mold plate. An injection molding tube is arranged in the upper mold plate. An upper mold cavity is arranged on the bottom surface of the upper mold plate. The injection molding tube passes through the upper mold cavity. A lower mold cavity is arranged on the top surface of the fixed mold plate to cooperate with the upper mold cavity. A fixed plate is arranged on the top surface of the fixed mold plate. The fixed plate is detachably connected to the fixed mold plate. A matching port is arranged on the fixed plate. The matching port, the upper mold cavity and the lower mold cavity are used to form a hardware injection molding part. The diameter of the matching port is smaller than the diameter of the hardware body.

[0011] In the above description, as a further solution, positioning pins are provided inside the fixed template, positioning holes are provided on the fixed plate, one end of the positioning pin passes through the fixed template and through the positioning hole, and a connection hole for cooperating with the positioning pin is provided on the bottom surface of the upper template.

[0012] In the above description, as a further solution, positioning blocks for fixing the hardware body are provided inside the lower cavity, and limiting holes for cooperating with the positioning blocks are provided on the hardware body.

[0013] The beneficial effects produced by the present utility model are as follows: For this hardware injection molded part, by providing a hardware body, an opening, and a hardware connection strip, the injection molded body is embedded in the opening, and the injection molded body wraps the hardware connection strip, forming a structure where the hardware is sandwiched between the injection molded plastics, effectively solving the problem that the hardware and the plastics are prone to separation after injection molding. Moreover, the injection molded body wraps the hardware connection strip, and at the same time, the hardware connection strip also tightens the injection molded body, making the injection molded body more firmly connected to the hardware body; For this injection molding structure, by providing a mating port on the fixed plate, the diameter of the mating port is smaller than the diameter of the hardware body, facilitating the placement and fixation of the hardware body before starting the injection molding of the injection molded body, and the fixed plate is detachably connected to the fixed template, facilitating the removal of the finished product. Description of the Drawings

[0014] Figure 1 is a three-dimensional structural schematic diagram of a hardware injection molded part of the present utility model;

[0015] Figure 2 is an exploded view of a hardware injection molded part of the present utility model;

[0016] Figure 3 is a three-dimensional structural schematic diagram of the injection molding structure of the present utility model;

[0017] Figure 4 is an exploded view of the injection molding structure of the present utility model in the first direction;

[0018] Figure 5 is an exploded view of the injection molding structure of the present utility model in the second direction;

[0019] Figure 6 is a sectional view of the injection molding structure of the present utility model for installing the hardware injection molded part;

[0020] In the figure: 1 - hardware body, 2 - injection molded body, 3 - opening, 4 - hardware connection strip, 5 - perforation, 6 - edge, 7 - fixed template, 8 - upper template, 9 - injection molding pipe, 10 - upper cavity, 11 - lower cavity, 12 - fixed plate, 13 - mating port, 14 - positioning pin, 15 - positioning hole, 16 - connection hole, 17 - positioning block, 18 - limiting hole. Detailed Embodiments

[0021] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] The embodiments described with reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a number of" and "a plurality of" is two or more, unless otherwise specifically defined. In the present application, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0023] Please refer to Figure 1-6 , a specific implementation of a hardware injection molding part, which includes a hardware body 1 and an injection molding body 2. An opening 3 is provided in the middle of the hardware body 1, and the inner walls of the opening 3 are connected by a hardware connecting strip 4. The injection molding body 2 is embedded in the opening 3, and the injection molding body 2 wraps the hardware connecting strip 4. The setting of the hardware connecting strip 4 facilitates the support and tension of the solidified injection molding body 2, so that the injection molding body 2 is firmly connected to the hardware body 1. The hardware connecting strip 4 and the hardware body 1 are integral.

[0024] Specifically, several hardware connecting bars 4 are provided. The several hardware connecting bars 4 are evenly arranged between the inner walls of the opening 3. The arrangement of the several hardware connecting bars 4 enables the injection molded body 2 to be evenly stressed, and further enables the injection molded body 2 to be firmly connected to the hardware body 1.

[0025] Specifically, a perforation 5 is provided on the hardware connecting bar 4, and the injection molded body 2 wraps around the perforation 5. The setting of the perforation 5 facilitates the infiltration of the softened injection molded body 2 into the perforation 5. After the injection molded body 2 is cured, the injection molded body 2 locks the hardware body 1, and further enables the injection molded body 2 to be firmly connected to the hardware body 1.

[0026] Specifically, a rim 6 is provided in the middle of the inner wall of the opening 3, and the injection molded body 2 wraps around the rim 6. The setting of the rim 6 is used to support the injection molded body 2, so that the injection molded body 2 can be stable on the hardware body 1.

[0027] The injection molding structure includes a fixed template 7 and an upper template 8. The upper template 8 is arranged on the top surface of the fixed template 7. An injection molding tube 9 is provided in the upper template 8. An upper cavity 10 is provided on the bottom surface of the upper template 8. The injection molding tube 9 penetrates into the upper cavity 10. A lower cavity 11 that cooperates with the upper cavity 10 is provided on the top surface of the fixed template 7. A fixing plate 12 is provided on the top surface of the fixed template 7. The fixing plate 12 is detachably connected to the fixed template 7. A mating port 13 is provided on the fixing plate 12. The mating port 13, the upper cavity 10 and the lower cavity 11 are used to form the described hardware injection molded part. The diameter of the mating port 13 is smaller than the diameter of the hardware body 1.

[0028] The injection molding process in the embodiment of the present utility model is as follows: First, the hardware body 1 is placed into the lower cavity 11, then the fixing plate 12 is placed on the top surface of the fixed template 7. The fixing plate 12 fixes the hardware body 1. Then the upper template 8 descends. The upper template 8 cooperates with the fixed template 7, and injection molding starts. The material flows from the injection molding tube 9 and sequentially flows into the upper cavity 10, the mating port 13 and the lower cavity 11 for molding. After the injection molding is completed, the upper template 8 moves upward, the fixing plate 12 is removed, and the hardware injection molded part is taken out.

[0029] Specifically, a positioning pin 14 is provided in the fixed template 7. A positioning hole 15 is provided on the fixing plate 12. One end of the positioning pin 14 passes through the fixed template 7 and passes through the positioning hole 15. A connection port 16 for cooperating with the positioning pin 14 is provided on the bottom surface of the upper template 8. The cooperation between the positioning pin 14 and the fixing plate 12 facilitates the direct placement and disassembly of the fixing plate 12.

[0030] In this embodiment, a positioning block 17 for fixing the hardware body 1 is provided in the lower cavity 11. A limiting hole 18 for cooperating with the positioning block 17 is provided on the hardware body 1. The setting of the positioning block 17 facilitates the fixing of the hardware body 1, so that the hardware body 1 can be stable in the lower cavity 11 during injection molding.

[0031] The above content is a further detailed description of the present utility model in combination with specific further embodiments, and it cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model pertains, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, and all should be regarded as the protection scope of the present utility model.

Claims

1. A metal injection molded part, comprising a metal body and an injection molded body, characterized in that: An opening is arranged in the middle of the hardware body, the inner walls of the opening are connected by a hardware connecting strip, the injection molded body is embedded in the opening, and the injection molded body covers the hardware connecting strip.

2. A metal injection molded part according to claim 1, characterized in that: The hardware connection strips are provided with a plurality of strips, and the plurality of hardware connection strips are evenly arranged between the inner walls of the opening.

3. A metal injection molded part according to claim 1, characterized in that: The hardware connecting strip is provided with a perforation, and the injection molded body covers the perforation.

4. A metal injection molded part according to claim 1, characterized in that: The middle part of the inner wall of the opening is provided with an edge, and the injection molding body wraps the edge.

5. The injection molding structure comprises a fixed mold plate and an upper mold plate, wherein the upper mold plate is arranged on the top surface of the fixed mold plate, an injection molding tube is arranged in the upper mold plate, an upper mold cavity is arranged on the bottom surface of the upper mold plate, the injection molding tube penetrates into the upper mold cavity, and a lower mold cavity is arranged on the top surface of the fixed mold plate to cooperate with the upper mold cavity, characterized in that: The top surface of the fixed mold plate is provided with a fixing plate, which is detachably connected to the fixed mold plate. The fixing plate is provided with a matching opening. The matching opening, the upper cavity and the lower cavity are used to form a hardware injection molded part as described in any one of claims 1-4, and the diameter of the matching opening is smaller than the diameter of the hardware body.

6. The injection molding structure according to claim 5, characterized in that: A positioning pin is arranged in the fixed template, a positioning opening is arranged on the fixed plate, one end of the positioning pin passes through the fixed template and the positioning opening, and a connecting opening for cooperating with the positioning pin is arranged on the bottom surface of the upper template.

7. The injection molded structure according to claim 5 or 6, characterized in that: A positioning block for fixing the hardware body is arranged in the lower cavity, and a limiting hole for cooperating with the positioning block is arranged on the hardware body.

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