Plastic part forming mold with linkage ejection mechanism

Abstract

The utility model provides a plastic part forming mold with a linkage ejection mechanism, and belongs to the technical field of mold manufacturing. The plastic part forming mold comprises a mold core, a triangular sliding block and an inclined guide column, the mold core is fixed to a step of a fixed mold through a bolt and provided with a separation inclined face attached to the triangular sliding block, a T-shaped groove is formed in the inclined face, a T-shaped sliding strip inserted into the T-shaped groove and sliding along the T-shaped groove is fixed to the right inclined face of the triangular sliding block, and a trapezoidal groove is formed in the left inclined face of the triangular sliding block; the inclined guide column is provided with an attaching inclined face attached to the left inclined face of the triangular sliding block, a protruding trapezoidal sliding strip embedded into the trapezoidal groove is arranged on the attaching inclined face, a sliding shaft transversely penetrates through the lower end of the inclined guide column, a guide sliding block is fixed to the top plate, a guide sliding groove is formed in the guide sliding block, and the sliding shaft is embedded into the guide sliding groove and can transversely slide along the guide sliding groove. The inclined guide column is driven by the top plate to move upwards, the linkage triangular sliding block moves rightwards and upwards, inclined core pulling is carried out through the linkage triangular sliding block, demolding is simple and flexible, the speed is high, and clamping is not prone to occurring.

Description

Technical Field

[0001] The utility model belongs to the technical field of mold manufacturing and relates to a plastic part forming mold with a linkage ejection mechanism. Background Art

[0002] Plastic molding molds, also known as injection molds, are tools for producing plastic products. They are also tools that give plastic products a complete structure and precise dimensions. Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, the heated and melted plastic is injected into the mold cavity by the injection molding machine under high pressure. After cooling and solidification, the molded product is obtained. After the injection molded part is cooled and formed, it needs to be ejected by the ejection mechanism. Some plastic products have special shapes and cannot be ejected from one direction. It is necessary to apply force from multiple angles to demold the plastic product. Utility Model Content

[0003] The utility model aims at the above problems existing in the prior art, and proposes a plastic part forming mold with a linkage ejection mechanism, which adopts a method of an inclined guide column linked with a triangular slider to perform oblique core pulling, and has simple demoulding and fast speed.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a plastic part forming mold with a linkage ejection mechanism, comprising an upper template, a movable mold, a lower template, a fixed mold, a top plate and a vertical plate, the movable mold is fixed on the upper template, the fixed mold is fixed on the vertical plates on both sides, the vertical plate is fixed on the lower template, and the top plate is located between the two vertical plates, characterized in that it also includes a mold core, a triangular slider and an inclined guide column, the mold core is fixed to the step of the fixed mold by bolts, the mold core has a separation inclined surface that fits the triangular slider, a T-shaped groove is opened on the inclined surface, a T-shaped slide bar inserted into the T-shaped groove and sliding along the right inclined surface of the triangular slider is fixed, a trapezoidal groove is opened on the left inclined surface of the triangular slider, the inclined guide column has a fitting inclined surface that fits the left inclined surface of the triangular slider, and a protruding trapezoidal slide bar embedded in the trapezoidal groove is provided on the fitting inclined surface, a sliding shaft is horizontally penetrated at the lower end of the inclined guide column, a guide slider is fixed on the top plate, a guide slide groove is opened on the guide slider, the sliding shaft is embedded in the guide slide groove and can slide horizontally along the guide slide groove.

[0005] Furthermore, a plurality of guide posts are fixed on the fixed mold, and guide holes are opened on the movable mold, and the guide posts are inserted into the guide holes when the molds are closed.

[0006] Furthermore, a limit slide groove is provided on the side of the triangular slider, and a limit protrusion is fixed on the inclined guide column, and the limit protrusion is located in the limit slide groove. The upper end of the limit slide groove is blocked, and when the inclined guide column rises, the trapezoidal slide bar continuously moves up along the trapezoidal groove, and the limit slide groove is used to limit the separation of the inclined guide column and the triangular slider, and when the limit protrusion abuts against the top of the limit slide groove, the inclined guide column and the triangular slider stop relative movement.

[0007] Furthermore, the front end surface of the inclined guide column has a concave molding groove, and the molding groove has a convex molding bump, and the height of the molding bump is greater than the depth of the molding groove.

[0008] Furthermore, the triangular slider, the mold core and the upper end surface of the fixed mold are all provided with grid-shaped grid grooves. The grid grooves are used to form grid reinforcement ribs on the bottom surface of the plastic product to enhance the strength of the product.

[0009] The piston rod of the ejection cylinder passes through the lower template and comes into contact with the ejector plate, driving the ejector plate to move up. The lower end of the inclined guide column adjusts its position laterally along the guide groove of the guide slider according to its own height. The inclined guide column pushes the triangular slider to move upward along the mold core, so that the product is separated from the fixed mold and the mold core. When the inclined guide column pushes the triangular slider to move upward to the right, the inclined guide column itself moves upward to the left relative to the triangular slider, thereby pushing the product to separate from the triangular slider, and finally the product is easily taken out of the mold.

[0010] Compared with the prior art, the plastic parts forming mold with a linkage ejection mechanism has the following advantages:

[0011] 1. The inclined guide column is moved upward by the top plate, and the linked triangular slider moves upward obliquely to the right, first allowing the grid reinforcement of the plastic product to be separated from the grid groove, and then moving upward obliquely to the left to separate the product from the molding groove. The method of linking the triangular slider is used to perform oblique core pulling. The mold has good precision, flexible demoulding, good quality, and is not easy to get stuck.

[0012] 2. Only one inclined guide pin is needed to complete the ejection of the product. The design structure is simple, the processing cycle is short, the cost is low, and the production efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional view of the plastic part molding mold with a linkage ejection mechanism.

[0014] Figure 2 It is a three-dimensional diagram of the plastic part molding mold with a linkage ejection mechanism.

[0015] Figure 3 It is a structural diagram of the fixed mold.

[0016] Figure 4 It is a structural diagram of this plastic product.

[0017] Figure 5 This is the matching diagram of the inclined guide column and the triangular slider.

[0018] Figure 6 It is a cross-sectional view when ejected.

[0019] Figure 7 It is a three-dimensional diagram of a triangular slider.

[0020] Figure 8 It is a three-dimensional diagram of the mold core.

[0021] In the figure, 1, upper template; 2, movable mold; 3, lower template; 4, fixed mold; 5, top plate; 6, vertical plate; 7, mold core; 71, separation slope; 72, T-slot; 8, triangular slider; 81, T-slide; 82, trapezoidal groove; 83, limit slide; 9, inclined guide column; 91, trapezoidal slide; 92, sliding shaft; 93, limit protrusion; 94, molding groove; 95, molding protrusion; 10, guide slider; 101, guide slide groove; 11, guide column; 12, grille groove. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] As shown in 1-3, the plastic part molding mold with a linkage ejection mechanism includes an upper mold plate 1, a movable mold 2, a lower mold plate 3, a fixed mold 4, a top plate 5 and a vertical plate 6. The movable mold 2 is fixed on the upper mold plate 1, the fixed mold 4 is fixed on the vertical plates 6 on both sides, the vertical plates 6 are fixed on the lower mold plate 3, and the top plate 5 is located between the two vertical plates 6.

[0024] like Figure 5-8 As shown, the plastic part molding mold with a linkage ejection mechanism also includes a mold core 7, a triangular slider 8 and an inclined guide column 9. The mold core 7 is fixed to the step of the fixed mold 4 by bolts. The mold core 7 has a separation inclined surface 71 that fits with the triangular slider 8, and a T-shaped groove 72 is opened on the inclined surface. The right inclined surface of the triangular slider 8 is fixed with a T-shaped slide 81 inserted into the T-shaped groove 72 and sliding along it. The left inclined surface of the triangular slider 8 is opened with a trapezoidal groove 82. The inclined guide column 9 has a fitting inclined surface that fits with the left inclined surface of the triangular slider 8, and a protruding trapezoidal slide 91 embedded in the trapezoidal groove 82 is provided on the fitting inclined surface. A sliding shaft 92 is horizontally penetrated at the lower end of the inclined guide column 9, and a guide slider 10 is fixed on the top plate 5. A guide slide groove 101 is opened on the guide slider 10. The sliding shaft 92 is embedded in the guide slide groove 101 and can slide horizontally along the guide slide groove 101.

[0025] A plurality of guide posts 11 are fixed on the fixed mold 4, and guide holes are opened on the movable mold 2. When the molds are closed, the guide posts 11 are inserted into the guide holes.

[0026] The triangular slider 8 has a limit slot 83 on its side, and a limit convex block 93 is fixed on the inclined guide column 9, and the limit convex block 93 is located in the limit slot 83. The upper end of the limit slot 83 is blocked, and when the inclined guide column 9 rises, the trapezoidal slide bar 91 continuously moves upward along the trapezoidal slot 82, and the limit slot 83 is used to limit the separation of the inclined guide column 9 and the triangular slider 8. When the limit convex block 93 abuts against the upper top of the limit slot 83, the inclined guide column 9 and the triangular slider 8 stop relative movement.

[0027] The front end surface of the inclined guide column 9 has a concave molding groove 94 , and the molding groove 94 has a convex molding bump 95 , and the height of the molding bump 95 is greater than the depth of the molding groove 94 .

[0028] The triangular slider 8, the mold core 7 and the upper end surface of the fixed mold 4 all have grid-like grid grooves 12. Figure 4 As shown, it is a structural diagram of this product. The grille groove 12 is used to form grid reinforcement ribs on the bottom surface of the plastic product to enhance the strength of the product.

[0029] The piston rod of the ejection cylinder passes through the lower template 3 and abuts against the top plate 5, driving the top plate 5 to move upward. The lower end of the inclined guide column 9 adjusts its position laterally along the guide groove 101 of the guide slide block 10 according to its own height. The inclined guide column 9 pushes the triangular slide block 8 to move upward along the mold core 7, so that the product is separated from the fixed mold 4 and the mold core 7. When the inclined guide column 9 pushes the triangular slide block 8 to move upward to the right, the inclined guide column 9 itself moves upward to the left relative to the triangular slide block 8, thereby pushing the product to be separated from the triangular slide block 8, and finally the product is easily taken out of the mold.

[0030] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A plastic part molding mold with a linkage ejection mechanism, comprising an upper mold plate, a movable mold, a lower mold plate, a fixed mold, a top plate and a vertical plate, wherein the movable mold is fixed on the upper mold plate, the fixed mold is fixed on the vertical plates on both sides, the vertical plates are fixed on the lower mold plate, and the top plate is located between the two vertical plates, characterized in that: The mold core is fixed to the step of the fixed mold by bolts, the mold core has a separation inclined surface that fits with the triangular slider, a T-shaped groove is opened on the inclined surface, a T-shaped slide bar inserted into the T-shaped groove and sliding along the right inclined surface of the triangular slider is fixed, a trapezoidal groove is opened on the left inclined surface of the triangular slider, the inclined guide column has a fitting inclined surface that fits with the left inclined surface of the triangular slider, a raised trapezoidal slide bar embedded in the trapezoidal groove is provided on the fitting inclined surface, a sliding shaft is horizontally penetrated at the lower end of the inclined guide column, a guide slider is fixed on the top plate, a guide slide groove is opened on the guide slider, the sliding shaft is embedded in the guide slide groove and can slide horizontally along the guide slide groove.

2. A plastic part forming mold with a linkage ejection mechanism according to claim 1, characterized in that: A number of guide posts are fixed on the fixed mold, and guide holes are opened on the movable mold. When the mold is closed, the guide posts are inserted into the guide holes.

3. A plastic part forming mold with a linkage ejection mechanism according to claim 1, characterized in that: A limiting sliding groove is provided on the side of the triangular sliding block, and a limiting protrusion is fixed on the inclined guide column, and the limiting protrusion is located in the limiting sliding groove.

4. A plastic part forming mold with a linkage ejection mechanism according to claim 1, characterized in that: The front end surface of the inclined guide column is provided with a concave forming groove, and a convex forming convex block is provided in the forming groove, and the height of the forming convex block is greater than the depth of the forming groove.

5. The plastic part forming mold with a linkage ejection mechanism according to claim 1, characterized in that: The triangular slider, the mold core and the upper end surface of the fixed mold are all provided with grid-shaped grille grooves.

Images