Male mold sliding mechanism of double-injection mold

Abstract

The invention relates to a male mold sliding mechanism of a double-injection mold, which comprises a first injection female mold, a second injection female mold, a third injection female mold, a fourth injection female mold, a fifth injection female mold and a sixth injection female mold, the second injection female mold is provided with a second shifting block and is used for pushing the sliding insert during second injection mold closing, so that a concave block of the sliding insert forms a second structure of the product; the sliding insert is provided with a concave edge and can be matched with the pressing plate to limit the displacement of the sliding insert, a convex block and a concave block are arranged on one side of the sliding insert, the sliding insert is used for forming the structure of a product, and a movable hole is formed in the sliding insert and used for enabling the sliding insert to reciprocate under the action of the first shifting block and the second shifting block; the mold has the beneficial effects that through different positions of the first shifting block of the first injection female mold and the second shifting block of the second injection female mold, the sliding insert is pushed to do reciprocating motion when the male mold and the female mold are closed, the first structure can be wrapped by the second structure, and the second structure can be wrapped by the second structure; the problem that the product joint is easy to peel is solved, and the bonding strength of the product is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of die mechanisms, and in particular to a male mold sliding mechanism of a double-shot mold.

Background Art

[0002] Double-shot injection molding refers to a molding method in which two plastics with different colors or different physical properties are injected into a mold, so that the product has two different colors or different physical properties, thereby improving the practicality and aesthetics of the product.

[0003] Such as Figures 1 to 2 For the shown product, in the double-shot molding of this product, hard plastic is first used for the first-shot molding of the first structure 20, and then soft plastic is used for the second-shot molding of the second structure 30. The second structure 30 formed by the second-shot molding directly seals the glue on the surface of the first structure formed by the first-shot molding, which will cause the joint between the hard plastic and the soft plastic to be easily peeled off, that is, the bonding strength of the product is weak.

[0004] In view of this, it is necessary to provide a male mold sliding mechanism of a double-shot mold to solve the above problems.

Summary of the Invention

[0005] The technical problem to be solved by the present invention is that in the molding of double-shot products, hard plastic is first used for the first-shot molding of the first structure, and then soft plastic is used for the second-shot molding of the second structure. The second structure formed by the second-shot molding directly seals the glue on the surface of the first structure formed by the first-shot molding, which will cause the joint between the hard plastic and the soft plastic to be easily peeled off, that is, the bonding strength of the product is weak. Therefore, the present invention provides a male mold sliding mechanism of a double-shot mold to solve the above problems.

[0006] The solution of the present invention to solve its technical problem is: a male mold sliding mechanism of a double-shot mold, including:

[0007] A female mold, the female mold is provided with a first-shot female mold and a second-shot female mold in the mold; wherein,

[0008] The first-shot female mold, a first push block is fixed in the first-shot female mold through a fixing member, and the first push block is used to push the sliding insert to reset during the first-shot mold closing, so that the convex block on the sliding insert is reset to the product to form the first structure of the product;

[0009] The second-shot female mold, a second push block is fixed in the second-shot female mold through a fixing member, and the second push block is used to push the sliding insert during the second-shot mold closing, so that the convex block on the sliding insert exits the first structure of the product, and at the same time, the concave block moves to the product to make the formed second structure cover the first structure of the product;

[0010] A male mold, the male mold cooperates with the first-shot female mold to form the first structure of the product, and cooperates with the second-shot female mold to form the second structure of the product. A sliding insert and a pressing plate are provided in the male mold; wherein,

[0011] Sliding insert, one side of the sliding insert is provided with a concave rib, and the concave rib can cooperate with a pressing plate to limit the displacement of the sliding insert through the pressing plate, so that the sliding insert reciprocates in the male mold along the direction of the pressing plate. The other side of the sliding insert is provided with a convex block for forming a first structure and a concave block for forming a second structure. The sliding insert is provided with a movable hole, and the movable hole can drive the convex block of the sliding insert to reset to the product during the first-shot molding to form the first structure of the product, and drive the convex block of the sliding insert to withdraw from the first structure of the product during the second-shot molding, and at the same time move the concave block to the product to form the second structure of the product;

[0012] Pressing plate, the pressing plate is fixed in the male mold through a fixing member, and the pressing plate is arranged on the concave rib of the sliding insert to limit the displacement of the sliding insert;

[0013] Product, the product is provided with a first structure and a second structure. The first structure is formed by the combination of the first-shot female mold and the male mold, and the second structure is formed by the combination of the second-shot female mold and the male mold. The first structure is provided with an extending structure on the side in contact with the second structure, and the extending structure can wrap the extending structure of the first structure formed by the first-shot molding when the second structure is formed by the second-shot molding, so as to enhance the bonding strength between the first structure and the second structure of the product.

[0014] Preferably, the fixing members are all screws.

[0015] Preferably, one end of the first dial and the second dial is in a "V" shape, which is shaped to fit the movable hole in the sliding insert. The inclined surfaces of the first dial and the second dial can act on the movable hole to drive the sliding insert to move.

[0016] Preferably, the "V"-shaped ends of the first dial and the second dial are provided with convex platforms, and the convex platforms can push the sliding insert to return to its original position first when the first-shot and second-shot molds are closed.

[0017] Preferably, the second dial is provided with a concave platform, and the concave platform can push the sliding insert to fit against the product end when the second-shot mold is closed, so that the sliding insert closely cooperates with the first structure of the product, preventing the formed product from having burrs due to the gap between the first structure and the sliding insert during the second-shot soft rubber molding.

[0018] Preferably, one set or more sets of sliding mechanisms can be provided on the male mold to simultaneously mold one set or more sets of products, which can effectively improve production efficiency.

[0019] The beneficial effect of the present invention is that the present invention adopts a male mold sliding mechanism of a double-shot mold, adopts different positions of the first shift block in the one-shot female mold and the second shift block in the two-shot female mold, so that the sliding insert can be pushed to reciprocate when the male and female molds are closed, and then the convex block and the concave block on the sliding insert cooperate with the product to form the first structure and the second structure, that is, the second structure can cover the extension structure of the first structure when forming, solves the problem that the joint of the one-shot hard glue and the two-shot soft glue is easy to peel off, and enhances the bonding strength of the product. In addition, the mold has a simple structure, is easy to install, and has low cost.

Description of the attached figure

[0020] Figure 1 This is a structural diagram of a known product.

[0021] Figure 2 Yes Figure 1 A cross-section of AA in .

[0022] Figure 3 It is a schematic diagram of the structure of the product in the present invention.

[0023] Figure 4 Yes Figure 3 Cross-section of BB.

[0024] Figure 5 This is a schematic diagram of the structure of the male mold sliding mechanism of a double-shot mold of the present invention.

[0025] Figure 6 Yes Figure 5 Enlarged view of point C in the middle.

[0026] Figure 7 It is a schematic diagram of the structure of the one-shot master mold and the two-shot master mold in the present invention.

[0027] Figure 8 is a schematic diagram of the structure of the sliding insert and the pressure plate.

[0028] Figure 9 This is a schematic diagram of the structure of the first and second shift blocks. [Specific implementation method]

[0029] To further illustrate the technical means and effects of the present invention, the following is a detailed description in conjunction with the embodiments of the present invention and its accompanying drawings.

[0030] The present invention provides a male mold sliding mechanism of a double-shot mold, comprising:

[0031] The master mold 110, wherein the master mold 110 is provided with a first shot master mold 120 and a second shot master mold 130 in the mold; wherein,

[0032] A first-shot female mold 120, in which a first shifting block 121 is fixed by a fixing member 170. The first shifting block 121 is used to push the sliding insert 150 to reset during the first-shot mold closing, so that the convex block 152 on the sliding insert 150 is reset to the product 100 for forming the first structure 101 of the product.

[0033] A second-shot female mold 130, in which a second shifting block 131 is fixed by a fixing member 170. The second shifting block 131 is used to push the sliding insert 150 during the second-shot mold closing, so that the convex block 152 on the sliding insert 150 withdraws from the first structure 101 of the product 100, and at the same time, the concave block 153 moves to the product 100 for the formed second structure 102 to cover the first structure 101 of the product 100.

[0034] A male mold 140, which cooperates with the first-shot female mold 120 to form the first structure 101 of the product 100 and cooperates with the second-shot female mold 130 to form the second structure 102 of the product 100. A sliding insert 150 and a pressing plate 160 are arranged in the male mold 140. Among them,

[0035] The sliding insert 150, on one side of which there is a concave rib 151. The concave rib 151 can cooperate with the pressing plate 160 to limit the displacement of the sliding insert 150, so that the sliding insert 150 reciprocates in the male mold 140 along the direction of the pressing plate 160. On the other side of the sliding insert 150, there are a convex block 152 for forming the first structure 101 and a concave block 153 for forming the second structure 102. The sliding insert 150 is provided with a moving hole 154. The moving hole 154 can drive the convex block 152 of the sliding insert 150 to reset to the product 100 through the first shifting block 121 during the first-shot molding for forming the first structure 101 of the product 100, and during the second-shot molding, drive the convex block 152 of the sliding insert 150 to withdraw from the first structure 101 of the product 100 through the second shifting block 131, and at the same time, make the concave block 153 move to the product 100 for forming the second structure 102 of the product 100.

[0036] The pressing plate 160 is fixed in the male mold 140 by a fixing member 170. The pressing plate 160 is arranged on the concave rib 151 of the sliding insert 150 to limit the displacement of the sliding insert 150.

[0037] Product 100, the product 100 is provided with a first structure 101 and a second structure 102. The first structure 101 is formed by clamping a first injection female mold 120 and a male mold 140, and the second structure 102 is formed by clamping a second injection female mold 130 and the male mold 140. The first structure 101 is provided with an extension structure 103 on the side contacting the second structure 102. The extension structure 103 can enable the second structure 102 formed by second injection to wrap the extension structure 103 of the first structure 101 formed by first injection, so as to enhance the bonding strength between the first structure 101 and the second structure 102 of the product 100.

[0038] Wherein, the fixing members 170 are all screws.

[0039] Wherein, one end of the first shifting block 121 and the second shifting block 131 is in a "V" shape, which is shaped to fit the moving hole 154 in the sliding insert 150. The inclined surface 180 of the first shifting block 121 and the second shifting block 131 can act on the moving hole 154 to drive the sliding insert 150 to move.

[0040] Wherein, a convex platform 190 is provided at the "V" - shaped end of the first shifting block 121 and the second shifting block 131. The convex platform 190 can push the sliding insert 150 to return to its original position first when the first injection and the second injection are clamped.

[0041] Wherein, a concave platform 200 is provided on the second shifting block 131. The concave platform 200 can push the sliding insert 150 to fit towards the product 100 end when the second injection mold is clamped, so that the sliding insert 150 closely cooperates with the first structure 101 of the product 100, preventing the formed product 100 from having flash due to the gap between the first structure 101 and the sliding insert 150 during second injection of soft glue.

[0042] Wherein, one or more groups of sliding mechanisms can be provided on the male mold 140 for simultaneously forming one or more groups of products 100. In this embodiment, four groups of sliding mechanisms are provided on the male mold 140, which can effectively improve production efficiency.

[0043] The beneficial effect of the present invention is that through a sliding mechanism of the male mold of a two - shot mold, by using different positions of the first shifting block 121 in the first injection female mold 120 and the second shifting block 131 in the second injection female mold 130, when the male and female molds are clamped, the sliding insert 150 can be pushed to reciprocate. Furthermore, the convex block 152 and the concave block 153 on the sliding insert 150 cooperate to form the first structure 101 and the second structure 102 of the product 100, that is, the second structure 102 can wrap the extension structure 103 of the first structure 101 when it is formed, solving the problem that the joint between the first injection of hard glue and the second injection of soft glue is prone to peeling, enhancing the bonding strength of the product 100, and this mold structure is simple, convenient to install, and has a low cost.

[0044] It should be noted that the present invention is not limited to the above embodiments, and any simple modifications, equivalent changes and modifications made by any person skilled in the art to the above embodiments based on the technical solution of the present invention all fall within the protection scope of the present invention.

Claims

1. A male mold sliding mechanism of a double-shot mold, characterized in that: include: The master mold is provided with a first shot master mold and a second shot master mold in the mold; wherein, A first-shot female mold, wherein a first shifting block is fixed in the first-shot female mold by a fixing member, and the first shifting block is used to push the sliding insert to reset during the first-shot mold closing, so that the protrusion on the sliding insert is reset to the product, and is used to form a first structure of the product; A two-shot female mold, wherein a second shifting block is fixed in the two-shot female mold by a fixing member, and the second shifting block is used to push the sliding insert during the two-shot mold closing, so that the convex block on the sliding insert withdraws from the first structure of the product, and at the same time moves the concave block to the product, so that the formed second structure covers the first structure of the product; A male mold, wherein the male mold cooperates with a one-shot female mold to form a first structure of the product, and cooperates with a two-shot female mold to form a second structure of the product, wherein a sliding insert and a pressing plate are provided in the male mold; wherein, A sliding insert, wherein a concave ridge is provided on one side of the sliding insert, and the concave ridge can cooperate with the pressing plate to limit the displacement of the sliding insert through the pressing plate, so that the sliding insert reciprocates in the male mold along the direction of the pressing plate, and a convex block for forming a first structure and a concave block for forming a second structure are provided on the other side of the sliding insert, and the sliding insert is provided with a movable hole, and the movable hole can drive the convex block of the sliding insert to be reset to the product through the first shift block in the first shot molding, so as to form the first structure of the product, and drive the convex block of the sliding insert to withdraw from the first structure of the product through the second shift block in the second shot molding, and at the same time make the concave block move to the product, so as to form the second structure of the product; A pressure plate is fixed in the male mold through a fixing piece, and the pressure plate is arranged on the concave edge of the sliding insert to limit the displacement of the sliding insert.

2. A male mold sliding mechanism of a double-shot mold according to claim 1, characterized in that: When the male mold cooperates with the one-shot female mold to mold the first structure of the product, an extension structure can be formed on the side where the first structure contacts the second structure. The extension structure can cover the first structure formed by the one-shot molding when the second structure is formed by the two-shot molding, so as to enhance the bonding strength between the first structure and the second structure of the product.

3. The male mold sliding mechanism of a double-shot mold according to claim 1, characterized in that: The fixing members are all screws.

4. The male mold sliding mechanism of a double-shot mold according to claim 1, characterized in that: One end of the first shift block and the second shift block may be in a "V" shape, which is contoured to the movable hole in the sliding insert. The inclined surfaces of the first shift block and the second shift block can act on the movable hole to drive the sliding insert to move.

5. The male mold sliding mechanism of a double-shot mold according to claim 4, characterized in that: A boss is provided at one end of the "V" shape of the first shift block and the second shift block, and the boss can push the sliding insert to return to its position first when the first shot and the second shot are closed.

6. The male mold sliding mechanism of a double-shot mold according to claim 1, characterized in that: The second shift block is provided with a recessed platform, which can push the sliding insert to fit toward the product end when the two-shot mold is closed, so that the sliding insert and the first structure of the product are closely matched, thereby preventing burrs on the molded product due to the gap left between the first structure and the sliding insert during the second shot of soft glue.

7. The male mold sliding mechanism of a double-shot mold according to claim 1, characterized in that: The male mold may be provided with one or more sets of sliding mechanisms for molding one or more sets of products at the same time, which can effectively improve production efficiency.

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