Integrated secondary molding injection molding mechanism

Abstract

The utility model relates to the technical field of terminal injection molding, in particular to an integrated secondary molding injection molding mechanism, which comprises a die holder and a molding assembly, a movable groove is arranged in the middle of the top surface of the die holder, the molding assembly comprises a primary molding jig, a secondary molding jig, a side molding block and a pin molding block, and a mounting groove is distributed in the middle of the movable groove. The primary forming jig and the secondary forming jig are arranged in the mounting groove, the top face of the primary forming jig is covered with a first cover plate, and the secondary forming jig is covered with a second cover plate. A jig for primary forming and a jig for secondary forming can be arranged in the mounting groove, during forming, a terminal material belt enters the mold from the movable groove, forming of a front half mold core is carried out in the primary forming jig, after forming, the terminal material belt is pulled to enter the secondary forming jig, and forming of a rear half mold core is carried out. Reel material receiving is not needed, then a set of die is replaced for secondary forming independently, machining steps are reduced, and meanwhile the production period is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of terminal injection molding, in particular to an integrated secondary molding injection molding mechanism. Background Art

[0002] Terminal Insert Molding is a molding process that embeds metal terminals or plug-ins into plastic parts. This technology is commonly used in electronic connectors, automotive parts, household appliances and other fields that require electrical and mechanical connections. In this process, metal terminals are precisely placed in the mold, and then plastic is injected into the mold through the injection molding process to form a complete part around the metal terminals.

[0003] In the two-shot molding process of terminals, the first and second shots each have different roles and purposes, and together they ensure the integrity and functionality of the final product. The first shot is mainly to form the basic structure of the product, which usually involves injecting the plastic material into the mold under high pressure after melting it at high temperature, thereby forming the primary insulation layer or the main frame of the product around the pre-placed metal terminals. This process creates the basic geometry and structure of the product, ensuring that the terminals are firmly fixed in the plastic, providing the necessary support and insulation for subsequent electrical connections.

[0004] The subsequent second injection molding is intended to add additional features or functions. This may include adding a soft or hard outer layer to provide a better feel, enhance impact resistance, improve the appearance design, or form a special texture on the surface of the product. In addition, the second injection molding may also be used to encapsulate sensitive electronic components, increase the level of water or dust resistance, or form a more complex multi-material structure, such as coating a layer of elastic material on a hard plastic shell to improve grip or shock absorption. Secondary injection molding often requires more sophisticated mold design to ensure that the newly injected material can accurately fit the part formed by the first injection molding to form a seamless multi-material component.

[0005] The secondary molding solution adopted in the prior art is to reel in the material after the first molding, and then change a set of molds to perform secondary molding separately. This method first requires two sets of molds to produce products, and the surrounding supporting equipment and manpower need to be configured according to the requirements of the two sets of molds. The cost of the two sets of molds is high and the production cycle will also be prolonged. For this reason, the inventor proposes an integrated secondary molding injection molding mechanism to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of the utility model is achieved in the following way: an integrated secondary molding injection molding mechanism, including a mold base and a molding component, a movable groove is provided in the middle of the top surface of the mold base, the molding component includes a primary molding jig, a secondary molding jig, a side molding block and a pin molding block, a plurality of mounting grooves are distributed in the middle of the movable groove, the primary molding jig and the secondary molding jig are detachably arranged in the mounting groove in sequence, a placement groove for terminal placement is provided on the top surface of the primary molding jig, a first molding groove is provided in the middle of the top surface of the primary molding jig, the first molding groove is connected with the placement groove, the top surface of the primary molding jig is covered with a first cover plate, the top surface of the secondary molding jig is provided with a second molding groove, both sides of the second molding groove are provided with positioning grooves, the side molding blocks are relatively arranged in the positioning grooves on both sides of the second molding groove, a bulging position is provided in the middle of the second molding groove, the pin molding block is arranged at one end of the secondary molding jig, and the secondary molding jig is covered with a second cover plate.

[0007] In the above description, a further scheme is made, in which a pin groove is provided at one end of the primary molding jig and the secondary molding jig, a movable position matching the pin is provided on one side of the pin molding block close to the second molding groove, and a positioning column is provided on the top surface of the pin groove of the secondary molding jig close to the pin molding block: the positioning column is used to provide a limiting installation effect for the pin molding block.

[0008] In the above description, a further solution is provided in which a notch forming position is provided at one end of the side forming block close to the arched position, and the notch forming position and the side forming block are an integrated structure; the notch forming position is used to provide a side notch formed after injection molding.

[0009] In the above description, as a further solution, the side forming block is in a "7"-shaped structure, and the bottom surface of the side forming block is in contact with the bottom of the positioning groove.

[0010] In the above description, a further solution is provided in which a first filling groove matching the first molding groove is provided on the bottom surface of the first cover plate near the first molding groove, and a second filling groove is provided on the bottom surface of the second cover plate near the arch position; the first filling groove and the second filling groove are used to provide a molding effect after injection molding.

[0011] In the above description, as a further solution, a positioning notch matching the side forming block is provided on the bottom surface of the second cover plate near the side forming block; the positioning notch is used to provide a fixed installation effect during injection molding of the side forming block.

[0012] Compared with the prior art, the beneficial effect of the utility model is that by providing a plurality of installation grooves in the movable groove, the staff can set a primary molding jig and a secondary molding jig in the installation groove when performing molding. When performing molding, the terminal material strip enters the mold from the movable groove, and in the primary molding jig, after covering the first cover plate, the front half of the mold core is molded. After molding, the first cover plate is opened, and the terminal material strip is pulled into the secondary molding jig, and the second cover plate is closed to mold the rear half of the mold core. There is no need to reel the material, and then change a set of molds to perform secondary molding separately, which reduces the processing steps and shortens the production cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the integrated secondary molding injection molding mechanism of the utility model;

[0014] Figure 2 It is a schematic diagram of the structural decomposition of the one-piece secondary molding injection molding mechanism of the utility model;

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the first cover plate in the one-piece secondary molding injection molding mechanism of the utility model;

[0016] Figure 4 It is a three-dimensional structural schematic diagram of the second cover plate in the one-piece secondary molding injection molding mechanism of the utility model;

[0017] Figure 5 This is a schematic diagram of the working effect of the integrated secondary molding injection molding mechanism of the utility model;

[0018] In the figure: 1-mold base, 2-movable groove, 3-primary molding jig, 4-secondary molding jig;

[0019] 5-side forming block, 6-pin forming block, 7-installation slot, 8-placing slot, 9-first forming slot;

[0020] 10-first cover plate, 11-second forming groove, 12-positioning groove, 13-arch position, 14-second cover plate;

[0021] 15-pin slot, 16-active position, 17-positioning column, 18-notch forming position, 19-first filling slot;

[0022] 20 - second filling slot, 21 - positioning notch. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] For this example, please refer to Figure 1-Figure 5The specifically implemented one-piece secondary molding injection molding mechanism comprises a mold base 1 and a molding assembly. The middle of the top surface of the mold base 1 is provided with an active groove 2. The molding assembly comprises a primary molding jig 3, a secondary molding jig 4, a side molding block 5 and a pin molding block 6. A plurality of mounting grooves 7 are distributed in the middle of the active groove 2. The primary molding jig 3 and the secondary molding jig 4 are sequentially detachably arranged in the mounting groove 7. A placement groove 8 for placing a terminal is provided on the top surface of the primary molding jig 3. The middle of the top surface of the primary molding jig 3 is provided with a The first molding groove 9 is connected with the placement groove 8, the top surface of the primary molding jig 3 is covered with a first cover plate 10, the top surface of the secondary molding jig 4 is provided with a second molding groove 11, both sides of the second molding groove 11 are provided with positioning grooves 12, the side molding blocks 5 are relatively arranged in the positioning grooves 12 on both sides of the second molding groove 11, and the middle part of the second molding groove 11 is provided with an arch position 13, the pin molding block 6 is arranged at one end of the secondary molding jig 4, and the secondary molding jig 4 is covered with a second cover plate 14.

[0025] One end of the primary molding jig 3 and the secondary molding jig 4 are both provided with a pin groove 15, and a movable position 16 matching the pin is provided on the side of the pin molding block 6 close to the second molding groove 11, and a positioning column 17 is provided on the top surface of the pin groove 15 of the secondary molding jig 4 close to the pin molding block 6.

[0026] A notch forming position 18 is disposed at one end of the side forming block 5 close to the arched position 13 , and the notch forming position 18 and the side forming block 5 are an integrated structure.

[0027] The side forming block 5 is in a "7"-shaped structure, and the bottom surface of the side forming block 5 is in contact with the bottom of the positioning groove 12. A first filling groove 19 matching the first forming groove 9 is provided on the bottom surface of the first cover plate 10 near the first forming groove 9, and a second filling groove 20 is provided on the bottom surface of the second cover plate 14 near the arch position 13.

[0028] A positioning notch 21 matching the side forming block 5 is provided on the bottom surface of the second cover plate 14 near the side forming block 5 .

[0029] The working process of the utility model is as follows: according to the terminals to be processed, a primary molding jig 3 and a secondary molding jig 4 corresponding to the terminals are selected; after the primary molding jig 3 and the secondary molding jig 4 are installed in the installation groove 7, the terminal strip is brought into the processing area from the movable groove 2; in the primary molding jig 3, after the first cover plate 10 is covered, the cover plate pressing block (not shown) is pressed down to form the front half of the mold core; after forming, the first cover plate 10 and the cover plate pressing block (not shown) are opened, the terminal strip enters the secondary molding jig 4, the second cover plate 14 and the cover plate pressing block (not shown) are closed to form the rear half of the mold core; after forming, the terminal strip can be withdrawn from the other direction, completing the double molding process.

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0031] In addition, in the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model 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 therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] Finally, it should be noted that the above embodiments are only specific implementation methods of the utility model, which are used to illustrate the technical solution of the utility model, rather than to limit it. The protection scope of the utility model is not limited thereto. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art should understand that any technician familiar with the technical field can still modify the technical solution recorded in the above embodiments within the technical scope disclosed by the utility model, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiment of the utility model, and should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. An integrated secondary molding injection molding mechanism, comprising a mold base and a molding assembly, wherein a movable groove is provided in the middle of the top surface of the mold base, and is characterized in that: The molding assembly includes a primary molding jig, a secondary molding jig, a side molding block and a pin molding block. A plurality of mounting grooves are distributed in the middle of the movable groove. The primary molding jig and the secondary molding jig are detachably arranged in the mounting groove in sequence. A placement groove for terminal placement is provided on the top surface of the primary molding jig. A first molding groove is provided in the middle of the top surface of the primary molding jig. The first molding groove is connected to the placement groove. A first cover plate is covered on the top surface of the primary molding jig. A second molding groove is provided on the top surface of the secondary molding jig. Positioning grooves are provided on both sides of the second molding groove. The side molding blocks are relatively arranged in the positioning grooves on both sides of the second molding groove. A raised position is provided in the middle of the second molding groove. The pin molding block is arranged at one end of the secondary molding jig. The secondary molding jig is covered with a second cover plate.

2. The one-piece secondary molding injection molding mechanism according to claim 1, characterized in that: One end of the primary molding jig and the secondary molding jig are both provided with a pin groove, a side of the pin molding block close to the second molding groove is provided with an active position matching the pin, and a positioning column is provided on the top surface of the pin groove of the secondary molding jig close to the pin molding block.

3. The one-piece secondary molding injection molding mechanism according to claim 1, characterized in that: A notch forming position is provided at one end of the lateral forming block close to the arched position, and the notch forming position and the lateral forming block are an integrated structure.

4. The one-piece secondary molding injection molding mechanism according to claim 3, characterized in that: The side forming block is in a "7"-shaped structure, and the bottom surface of the side forming block is in contact with the bottom of the positioning groove.

5. The one-piece secondary molding injection molding mechanism according to claim 1, characterized in that: A first filling groove matching the first forming groove is provided on the bottom surface of the first cover plate near the first forming groove, and a second filling groove is provided on the bottom surface of the second cover plate near the arched position.

6. The one-piece secondary molding injection molding mechanism according to claim 5, characterized in that: A positioning notch matching the side forming block is provided on the bottom surface of the second cover plate near the side forming block.

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