Anti-crushing structure for two-time rubber coating and sealing of double-color mold

Abstract

The utility model relates to an anti-crush structure for secondary encapsulation and sealing of a double-color mold, which comprises a rear mold body, an anti-crush component structure is arranged in a product forming area of the rear mold body, and the anti-crush component structure comprises a central soft nylon block component and a plurality of groups of compression slide block structures for compressing a once-formed workpiece. And the pressing slide block structure comprises a group of central jacking pressing slide block structures arranged in the rear mold body and a group of side part side end pressing slide block structures arranged at the side end of the rear mold body. According to the mold structure, after a one-time injection molding product is placed, the mold is closed, the sliding block tightly presses the one-time injection molding product, and the soft nylon block is additionally arranged on the sliding block, so that the product cannot be crushed while being tightly extruded; during injection molding, a molding raw material extruded by a screw of an injection molding machine reaches a cavity, a one-time injection molding product is stressed by being in contact with a rear mold core to generate extrusion damage and shining, and a soft nylon block is additionally arranged on a rear mold, so that the stress of the one-time injection molding product during molding is reduced, and the problems of extrusion damage and shining are solved; meanwhile, the added soft nylon block can adjust the thickness.

Description

Technical Field

[0001] This utility model relates to an injection mold, and more particularly to a pressure-resistant structure for a two-color mold with secondary overmolding and sealing. Background Technology

[0002] Two-color injection molding refers to a process that uses two different colors or types of plastics to create finished products with different colors or surface hardness through injection molding. In existing technologies, two-color injection molding is typically performed in two stages, with the first-stage product serving as an insert for the second injection, also known as embedded injection. Previously, the mold slider and mold core were sealed together by contact between the two materials. The first-stage injection molded product, participating in the mold sealing process, was prone to damage and shine due to contact with mold parts. Furthermore, deformation of the first-stage injection molding skeleton could lead to sealant failure during the second injection, resulting in issues such as flash and runner defects.

[0003] Publication No.: CN211807590U A collision-prevention structure for the second color mold of a two-color mold, specifically relating to the field of mold technology, includes a second template. A first template is mounted on the top surface of the second template, and the top surface of the second template has a notch. An assembly groove is provided at one end of the notch, and a slider is provided inside the assembly groove. A pressure plate is provided on one side of the slider, and a first positioning hole is provided on the top surface of the pressure plate. This utility model includes a slider, a step block, a slot, and a spade block. The slider presses against the first template, ensuring a certain distance between the first and second templates. When the mold is closed to a certain distance, the slider is compressed into the second template by the spade block, causing the step block on the slider to embed into the slot on the first template. After the second and third templates are closed, the first and second templates begin to close, preventing the internal structure of the second template from damaging the first color plastic product.

[0004] The aforementioned anti-pressure injury structure suffers from complex design and inconvenient adjustment. Utility Model Content

[0005] The purpose of this invention is to provide a pressure-resistant structure for a two-color mold secondary overmolding and sealing process, thereby solving the problem of reducing pressure damage and deformation in products that were previously injection molded during secondary injection molding.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a pressure-resistant structure for secondary overmolding and sealing of a two-color mold, including a rear mold body and a product forming area provided in the rear mold body. The product forming area is provided with a pressure-resistant component structure. The pressure-resistant component structure includes a central soft nylon block component for pressing the one-time injection molded product in the middle of the product forming area of ​​the rear mold body, and multiple sets of pressing slider structures for pressing the one-time molded workpiece on the outside of the product forming area of ​​the rear mold body. The pressing slider structure includes a set of central top pressing pressing slider structures in the rear mold body and a set of side pressing slider structures on the side end of the rear mold body.

[0007] The central top pressure clamping slider structure includes a central slide body and a side end clamping slider body on the inner side of the central slide body.

[0008] The aforementioned side-end pressing slider structure includes a side-end connector located at the side of the rear mold body and the outer end of the forming area, a side-end connector located in the side groove, and a product pressing body located outside the side-end connector.

[0009] A lateral soft nylon block is provided in the middle slide body of the upper part of the side-end pressing slider body.

[0010] The central soft nylon block assembly includes a set of central lateral soft nylon blocks and a set of central bottom soft nylon blocks.

[0011] The beneficial effects of this utility model are as follows: This utility model provides a sealing and anti-squeezing structure for a secondary overmolding mold: During injection molding, the product injected at the first stage is prevented from being injected into the secondary overmolding mold. After the product is placed, the mold closes, and the slider presses the product tightly. A soft nylon block is added to the slider to ensure that the product is not damaged while being squeezed. During injection molding, the injection molding machine screw extrudes the molding material into the cavity. The product injected at the first stage is subjected to force and comes into contact with the rear mold core, resulting in squeezing damage and shine. By adding a soft nylon block to the rear mold, the force on the product injected at the first stage during molding is reduced, solving the squeezing damage and shine problems. At the same time, the added soft nylon block can be adjusted in thickness, making it convenient to use and quick to replace in actual production.

[0012] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 for Figure 1 The unassembled state.

[0015] Figure 3 This is a structural diagram of the inner surface of the pressing slider structure of this utility model.

[0016] Figure 4 This is a perspective view of the lateral soft nylon block in this utility model.

[0017] Figure 5 This is a structural diagram of the central lateral soft nylon block in this utility model.

[0018] Figure 6 This is a perspective view of the soft nylon block at the center bottom surface of this utility model.

[0019] Figure 7 This is a perspective view of the side-end pressing slider structure of this utility model.

[0020] In the diagram: 1. Rear mold body, 2. Middle slide body, 3. Side end clamping slide body, 4. Side groove, 5. Side end connector, 6. Product pressing edge body, 7. Lateral soft nylon block, 8. Central lateral soft nylon block, 9. Central bottom soft nylon block, 10. Product forming area, 11. Clamping slide mounting groove, 12. Central side end connector groove, 13. Bottom mounting groove, 7.1. Flat boss body, 7.2. Inner pressing edge of forming. Detailed Implementation

[0021] The terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end" used in the application text to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example 1, such as Figure 1-7As shown, a pressure-resistant structure for secondary overmolding and sealing in a two-color mold includes a rear mold body 1 and a product forming area 10 within the rear mold body. The product forming area is equipped with a pressure-resistant component structure, which includes a central soft nylon block assembly located in the middle of the product forming area of ​​the rear mold body for pressing the primary injection molded product, and multiple sets of pressing slider structures located outside the product forming area of ​​the rear mold body for pressing the primary molded workpiece. The pressing slider structure includes a set of central top-pressing pressing slider structures within the rear mold body and a set of side-end pressing slider structures located at the side ends of the rear mold body. The rear mold body 1 has a pressing slider mounting groove 11 for the pressing slider structure.

[0024] The central top pressure clamping slider structure includes a central slide body 2 and a side end clamping slider body 3 on the inner side of the central slide body.

[0025] The aforementioned side-end clamping slider structure includes a side groove 4 located at the outer end of the rear mold body and the molding area, a side-end connector 5 located in the side groove, and a product pressing body 6 located outside the side-end connector. The product pressing body 6 is disposed in the extension groove 14.

[0026] A lateral soft nylon block 7 is provided in the middle slide body of the upper part of the side-end pressing slider body. A flat boss body 7.1 is provided on the upper part of the lateral soft nylon block 7, and a forming inner pressing edge 7.2 corresponding to the product forming area 10 is provided at the outer edge between the flat boss body 7.1 and the lateral soft nylon block 7.

[0027] The central soft nylon block assembly includes a set of central lateral soft nylon blocks 8 and a set of central bottom soft nylon blocks 9. The rear mold body 1 is provided with a central side end connecting groove 12 for mounting the central lateral soft nylon blocks 8, and a bottom mounting groove 13 for mounting the central bottom soft nylon blocks 9.

[0028] During injection molding, the product is injected in the first stage to prevent secondary overmolding. After the product is placed in the first stage mold, the mold closes, and the slide block presses the product firmly. A soft nylon block is added to the slide block to compress the product without damaging it. During injection molding, the injection molding machine screw extrudes the molding material into the cavity. The product is subjected to force when it comes into contact with the rear mold core, which can cause squeezing damage and shine. By adding a soft nylon block to the rear mold, the stress on the product during molding is reduced, solving the squeezing damage and shine problems. The added soft nylon block can also be adjusted in thickness, making it convenient to use and quick to replace in actual production.

[0029] The above embodiments are merely descriptions of preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

[0030] The parts not covered in this utility model are the same as or can be implemented using existing technologies.

Claims

1. A pressure-resistant structure for two-color mold secondary overmolding and sealing, comprising a rear mold body and a product forming area disposed in the rear mold body, characterized in that: The product molding area is provided with an anti-pressure damage component structure. The anti-pressure damage component structure includes a central soft nylon block component for pressing the one-time injection molded product in the middle of the product molding area of ​​the rear mold body, and multiple sets of pressing slider structures for pressing the one-time molded workpiece on the outside of the product molding area of ​​the rear mold body. The pressing slider structure includes a set of central top pressing pressing slider structures in the rear mold body and a set of side pressing slider structures on the side end of the rear mold body.

2. The anti-pressure damage structure for double-color mold secondary overmolding and sealing as described in claim 1, characterized in that: The central top pressure clamping slider structure includes a central slide body and a side end clamping slider body on the inner side of the central slide body.

3. The anti-pressure damage structure for double-color mold secondary overmolding and sealing as described in claim 1, characterized in that: The aforementioned side-end pressing slider structure includes a side-end connector located at the side of the rear mold body and the outer end of the forming area, a side-end connector located in the side groove, and a product pressing body located outside the side-end connector.

4. The anti-pressure damage structure for double-color mold secondary overmolding and sealing as described in claim 2, characterized in that: A lateral soft nylon block is provided in the middle slide body of the upper part of the side-end pressing slider body.

5. The anti-pressure damage structure for double-color mold secondary overmolding and sealing as described in claim 1, characterized in that: The central soft nylon block assembly includes a set of central lateral soft nylon blocks and a set of central bottom soft nylon blocks.

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