Decorative cover plate forming die

Abstract

The decorative cover plate forming mold comprises a first mold plate, a second mold plate and an ejector plate, a material injection part is arranged on the first mold plate, an injection molding cavity is formed when the first mold plate and the second mold plate are closed, the injection molding cavity comprises two forming cavities and an excess material cavity, the material injection part is communicated with the excess material cavity, and the ejector plate is arranged on the first mold plate. The ejector plate is provided with two symmetrically-arranged first straight ejector rods and two oppositely-arranged inclined ejector rods, a first straight hole is formed in the second mold plate in a penetrating mode, a forming core is arranged at the first end of each inclined ejector rod, a matching groove is formed in the second mold plate, a square block is arranged on the inner wall of the matching groove, a sliding block is hinged to the second end of each inclined ejector rod, and the sliding blocks are connected to the ejector plate in a sliding mode. And two sliding holes which are oppositely arranged and oppositely inclined are formed in the second template in a penetrating manner. According to the decorative cover plate forming mold disclosed by the utility model, the ejection component adopts the synchronous ejection of the straight ejector and the inclined ejector to realize the demolding operation of the cover plate body, so that the demolding is relatively smooth, the buckle sleeve is prevented from being deformed during demolding, and the yield of decorative cover plates is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of decorative cover plate moulds, in particular to a decorative cover plate forming mould. Background Art

[0002] With the development of modern industrial products, the demand for the appearance decoration of industrial products is getting higher and higher. As one of the appearance decoration parts, decorative cover plates can be used in car lights, electronic equipment, furniture and other equipment. Decorative cover plates are generally made of plastic, and most of them are processed by injection molding. Existing decorative cover plates such as Figure 1 As shown, it includes a cover body, and the inner cavity wall of the cover body is formed with two relatively arranged snap sleeves, and the bottom of the snap sleeve is penetrated with a square opening. After the decorative cover is injection molded, the product needs to be ejected by an ejection mechanism. When the cover body is demolded, the snap sleeve with the square opening is easily deformed during demolding, making demolding difficult, thereby affecting the yield rate of the decorative cover. Utility Model Content

[0003] The purpose of the utility model is to design a decorative cover plate forming mold in order to solve the deficiencies of the above-mentioned technology. The ejector assembly adopts straight ejection and inclined ejection to realize the demoulding operation of the cover plate body. The demoulding is relatively smooth, and the buckle sleeve is prevented from being deformed during demoulding, thereby improving the finished product rate of the decorative cover plate.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a decorative cover plate forming mold, including a first template, a second template, and a top plate, the first template is provided with an injection piece, the first template and the second template are molded together to form an injection cavity, the injection cavity includes two oppositely arranged molding cavities, and a residual material cavity connecting the two molding cavities, the injection piece is connected to the residual material cavity, the top plate is provided with a top material assembly at a position corresponding to the molding cavity, the top material assembly includes two symmetrically arranged first straight ejector rods, two oppositely arranged inclined ejector rods, and the second template is provided with a through hole. There is a first straight hole for the first straight ejector rod to be slidably connected, the end of the first straight ejector rod cooperates with the forming cavity, the first end of the inclined ejector rod is provided with a forming core for forming a buckle sleeve, the second template is provided with a matching groove for accommodating the forming core, the inner wall of the matching groove is provided with a square block, the square block cooperates with the forming core to form a square mouth, the second end of the inclined ejector rod is hinged with a slider, the slider is slidably connected to the ejection plate, the second template relative to the forming cavity is penetrated by two sliding holes arranged relatively and inclined toward each other, the inclined ejector rod is slidably connected in the corresponding sliding holes.

[0005] Preferably, a residual material ejector rod is arranged at a position of the ejector plate relative to the residual material cavity, and a ejector hole for sliding connection of the residual material ejector rod is penetrated through the second template.

[0006] Preferably, the ejection material assembly also includes two second straight ejector rods symmetrically arranged, a ejection material groove is opened between the two molding cavities corresponding to the second template, a second straight hole is penetrated through the inner wall of the ejection material groove for the second straight ejector rod to be slidably connected, and the second straight ejector rod is provided with a ejection material block inserted into the ejection material groove, and the two sides of the ejection material block are respectively connected to the two molding cavities.

[0007] Preferably, it also includes a base plate, the base plate has an operating hole passing through it, the base plate is symmetrically provided with two square irons, the side of the square iron away from the base plate is fixedly connected to the second template, and the top plate is slidably connected between the two square irons.

[0008] Preferably, a first docking portion is arranged around the first template, and a second docking portion is arranged around the second template, and the first docking portion and the second docking portion are matched in a concave-convex manner.

[0009] Preferably, the first template is provided with docking posts at the four corners, and the second template is provided with docking sleeves for the docking posts to be plugged into.

[0010] Preferably, a movable hole is penetrated through the second template at a position relative to the second docking portion, and the ejection plate is provided with a movable rod slidably connected to the movable hole, and the end of the movable rod extending out of the movable hole abuts against the first template.

[0011] Preferably, at least one guide column is provided between the base plate and the second template, and the ejection plate is penetrated by a guide hole for the guide column to be slidably connected.

[0012] Preferably, at least one limiting column is provided on the side wall of the ejecting plate close to the second template, and the end surface of the limiting column is in abutment with the second template.

[0013] Preferably, an elastic telescopic member is provided between the ejector plate and the second template.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model discloses a decorative cover plate forming mold. After the forming mold is closed for injection molding to form a cover plate body in a forming cavity, a first template and a second template are separated. A ejector plate demoulds the formed cover plate body through an ejector assembly. The ejector plate approaches the second template to drive the cover plate body to move in a direction away from the second template by linking two first straight ejector rods of the ejector assembly. During the process, the inclined ejector rod slides axially along the sliding hole, so that two forming cores extend out of the second template and approach each other. The two forming cores are respectively ejected from two buckle sleeves of the cover plate body. The ejector assembly adopts straight ejection and inclined ejection to synchronously eject the cover plate body. The demoulding is relatively smooth, deformation of the buckle sleeve during demoulding is prevented, and the yield rate of the decorative cover plate is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a decorative cover plate produced by the molding die in the embodiment;

[0017] Figure 2 is a schematic structural diagram of the molding die in the embodiment;

[0018] Figure 3 The first template, the second template, the top plate, and the base plate in the embodiment are cross-sectional views. Figure 1 ;

[0019] Figure 4 The first template, the second template, the top plate, and the base plate in the embodiment are cross-sectional views. Figure 2 ;

[0020] Figure 5 is a schematic structural diagram of the first template in the embodiment;

[0021] Figure 6 A schematic diagram of the structure of the second template, the top plate, and the base plate in the embodiment;

[0022] Figure 7 is a cross-sectional view of a top material block in an embodiment;

[0023] Figure 8 Schematic diagram of the structure of the ejector assembly in the embodiment.

[0024] In the figure: 1, first template; 101, injection piece; 102, first docking part; 103, docking column; 2, second template; 201, first straight hole; 202, matching groove; 203, block; 204, sliding hole; 205, ejection hole; 206, ejection groove; 207, second straight hole; 208, second docking part; 209, docking sleeve; 210, movable hole; 3, ejection plate; 301, guide hole; 302, limit column; 4 , base plate; 401, operating hole; 402, square iron; 5, forming cavity; 6, excess material cavity; 7, first straight ejector rod; 8, inclined ejector rod; 801, forming core; 802, slider; 9, excess material ejector rod; 10, second straight ejector rod; 1001, ejector block; 11, movable rod; 12, guide column; 13, elastic telescopic part; 14, cover body; 1401, snap sleeve; 1402, square mouth; 1403, water outlet part; 15, frame. DETAILED DESCRIPTION

[0025] The present invention will be further described below by way of embodiments in conjunction with the accompanying drawings.

[0026] refer to Figures 1 to 8 A decorative cover plate forming mold includes a frame 15, a first template 1, a second template 2, a top plate 3, and a base plate 4 arranged on the frame 15. A first docking portion 102 is arranged around the first template 1, and a second docking portion 208 is arranged around the second template 2. Preferably, the first docking portion 102 is an external convex block, and the second docking portion 208 is an internal concave cavity. The first docking portion 102 and the second docking portion 208 are matched in a concave-convex manner. Docking columns 103 are arranged at the four corner positions of the first template 1, and the second template 2 is provided with a docking sleeve 209 for the docking column 103 to be plugged in, which is used to guide the first template 1 and the second template 2 to close the mold. An injection piece 101 is arranged on the first template 1, and an injection cavity is formed when the first template 1 and the second template 2 are closed. The injection cavity includes two molding cavities 5 arranged oppositely, and a residual material cavity 6 connecting the two molding cavities 5. The injection piece 101 is connected to the residual material cavity 6.

[0027] The base plate 4 has an operation hole 401 through it, and two square irons 402 are symmetrically arranged on the base plate 4. The side of the square iron 402 away from the base plate 4 is fixedly connected to the second template 2. Four guide posts 12 distributed in a rectangular array are arranged between the base plate 4 and the second template 2. The ejector plate 3 has a guide hole 301 through it for the guide post 12 to slide and connect, so that the ejector plate 3 is slidably connected between the two square irons 402. The second template 2 has a movable hole 210 through it at a position relative to the second docking portion 208, and the ejector plate 3 is provided with a movable rod 11 slidably connected to the movable hole 210.

[0028] By moving the ejector plate 3 close to the second movable template 2, the ejector plate 3 drives the end of the movable rod 11 extending out of the movable hole 210 to contact the first template 1, thereby pushing the second template 2 away from the first template 1. Two limiting columns 302 are symmetrically arranged on the side wall of the ejector plate 3 close to the second template 2, and the end faces of the limiting columns 302 are in contact with the second template 2 to limit the translational movement of the ejector plate 3. An elastic telescopic member 13 is arranged between the ejector plate 3 and the second template 2, and the elastic telescopic member 13 can be a pneumatic spring, so that the ejector plate 3 has a tendency to move away from the second template 2.

[0029] A lifting assembly is arranged at the position of the lifting plate 3 corresponding to the forming cavity 5, and the lifting assembly includes two symmetrically arranged first straight lifting rods 7 and two oppositely arranged inclined lifting rods 8. A first straight hole 201 for sliding connection of the first straight lifting rod 7 is penetrated on the second template 2, and the end of the first straight lifting rod 7 cooperates with the forming cavity 5. The first end of the inclined lifting rod 8 is provided with a forming core 801 for forming a buckle structure. The second template 2 is provided with a matching groove 202 for accommodating the forming core 801. The inner wall of the matching groove 202 is provided with a block 203. The block 203 cooperates with the forming core 801 to form a square opening 1402. The second end of the inclined lifting rod 8 is hinged with a slider 802, and the slider 802 is slidably connected to the lifting plate 3. The second template 2 relative to the forming cavity 5 is penetrated with two sliding holes 204 that are relatively arranged and inclined toward each other, and the inclined lifting rod 8 is slidably connected in the corresponding sliding holes 204.

[0030] After the molding mold is closed for injection molding and the cover plate body 14 is formed in the molding cavity 5, the external telescopic driving device can be used to drive the ejection plate 3 to approach the second template 2 through the operating hole 401, so that the first template 1 and the second template 2 are separated, and the ejection plate 3 demoulds the molded cover plate body 14 through the ejection assembly, and the ejection plate 3 approaches the second template 2 to drive the cover plate body 14 to move away from the second template 2 by linking the two first straight ejector rods 7 of the ejection assembly. In this process, the inclined ejector rod 8 slides axially along the sliding hole 204, so that the two molding cores 801 extend out of the second template 2 and approach each other, and the two molding cores 801 are respectively ejected from the two snap sleeves 1401 of the cover plate body 14, and the ejection assembly adopts straight ejection and inclined ejection to synchronously eject the cover plate body 14, and the demoulding operation is relatively smooth, which prevents the snap sleeve 1401 from deformation during demoulding, thereby improving the yield rate of the decorative cover plate.

[0031] The ejector plate 3 is provided with a residual material ejector rod 9 at a position relative to the residual material cavity 6, and the second template 2 is penetrated with an ejector hole 205 for sliding connection of the residual material ejector rod 9. The ejector assembly also includes two symmetrically arranged second straight ejector rods 10, and the second template 2 is provided with an ejector groove 206 between the two corresponding molding cavities 5, and the inner wall of the ejector groove 206 is penetrated with a second straight hole 207 for sliding connection of the second straight ejector rod 10, and the second straight ejector rod 10 is provided with an ejector block 1001 inserted into the ejector groove 206, and the two sides of the ejector block 1001 are respectively connected to the two molding cavities 5. During the demolding process, the ejector plate 3 drives the residual material ejector rod 9 to eject the sprue piece 1403 between the two cover plate bodies 14 out of the second mold plate 2, and the ejector plate 3 drives the two straight ejector rods to apply pressure to the edge portions of the opposite sides of the two cover plates, cooperating with the ejector assembly to ensure that the molding mold can demold two connected cover plate bodies 14 at one time, so that the two cover plate bodies 14 are evenly stressed, avoiding deformation of the cover plate bodies 14 during demolding.

[0032] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A decorative cover plate forming mold, comprising a first template (1), a second template (2), and a top plate (3), wherein the first template (1) is provided with an injection piece (101), and an injection cavity is formed when the first template (1) and the second template (2) are molded together, wherein the injection cavity comprises two molding cavities (5) arranged opposite to each other, and a residual material cavity (6) connecting the two molding cavities (5), wherein the injection piece (101) is connected to the residual material cavity (6), and wherein: A ejection assembly is arranged at a position of the ejection plate (3) corresponding to the molding cavity (5), and the ejection assembly includes two symmetrically arranged first straight ejection rods (7) and two oppositely arranged inclined ejection rods (8). The second template (2) is penetrated with a first straight hole (201) for the first straight ejection rod (7) to be slidably connected. The end of the first straight ejection rod (7) is matched with the molding cavity (5). The first end of the inclined ejection rod (8) is provided with a molding core (801) for molding a buckle sleeve (1401). The second template (2) is provided with a first hole (201) for accommodating the molding core. (801) has a matching groove (202), the inner wall of the matching groove (202) is provided with a block (203), the block (203) cooperates with the forming core (801) to form a forming square mouth (1402), the second end of the inclined ejector rod (8) is hinged with a slider (802), the slider (802) is slidably connected to the ejector plate (3), the second template (2) is provided with two sliding holes (204) arranged oppositely and inclined toward each other relative to the position of the forming cavity (5), and the inclined ejector rod (8) is slidably connected in the corresponding sliding hole (204).

2. The decorative cover plate forming mold according to claim 1, characterized in that: A residual material ejector rod (9) is arranged at a position of the ejector plate (3) relative to the residual material cavity (6), and a ejector hole (205) for sliding connection of the residual material ejector rod (9) is passed through the second template (2).

3. The decorative cover plate forming mold according to claim 1, characterized in that: The ejection material assembly also includes two second straight ejector rods (10) that are symmetrically arranged. A ejection material groove (206) is provided between the second template (2) and the two molding cavities (5). The inner wall of the ejection material groove (206) is penetrated by a second straight hole (207) for the second straight ejector rod (10) to be slidably connected. The second straight ejector rod (10) is provided with an ejection material block (1001) inserted into the ejection material groove (206), and the two sides of the ejection material block (1001) are respectively connected to the two molding cavities (5).

4. The decorative cover plate forming mold according to claim 1, characterized in that: It also includes a base plate (4), the base plate (4) having an operating hole (401) extending therethrough, the base plate (4) being symmetrically provided with two square irons (402), the side of the square irons (402) away from the base plate (4) being fixedly connected to the second template (2), and the ejector plate (3) being slidably connected between the two square irons (402).

5. The decorative cover plate forming mold according to claim 4, characterized in that: A first docking portion (102) is arranged around the first template (1), and a second docking portion (208) is arranged around the second template (2), and the first docking portion (102) and the second docking portion (208) are matched in a concave-convex manner.

6. The decorative cover plate forming mold according to claim 5, characterized in that: The first template (1) is provided with docking posts (103) at the four corner positions around the first template (1), and the second template (2) is provided with docking sleeves (209) for the docking posts (103) to be plugged into.

7. The decorative cover plate forming mold according to claim 5, characterized in that: A movable hole (210) is formed through the second template (2) at a position relative to the second docking portion (208); the ejector plate (3) is provided with a movable rod (11) slidably connected to the movable hole (210); the end of the movable rod (11) extending out of the movable hole (210) abuts against the first template (1).

8. The decorative cover plate forming mold according to claim 4, characterized in that: At least one guide column (12) is provided between the base plate (4) and the second template (2), and the ejector plate (3) is penetrated by a guide hole (301) for the guide column (12) to be slidably connected.

9. The decorative cover plate forming mold according to claim 4, characterized in that: At least one limiting column (302) is provided on the side wall of the ejecting plate (3) close to the second template (2), and the end surface of the limiting column (302) is in abutment with the second template (2).

10. The decorative cover plate forming mold according to claim 4, characterized in that: An elastic telescopic member (13) is provided between the ejector plate (3) and the second template (2).

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