Plastic part injection mold capable of achieving automatic discharging

Abstract

The utility model relates to the field of plastic part injection molds, and discloses a plastic part injection mold capable of automatically blanking, which comprises a mold I and a mold II, an injection pipe is arranged on the inner wall of the right part of the mold I, an ejector pin is arranged on the left side of the mold II, and an ejection component is arranged on the right side of the mold I; and the ejection assembly comprises a round sleeve and an extrusion block, the extrusion block is arranged on the upper portion of the second mold, the round sleeve is rotationally connected to the right side of the first mold, a sliding groove is formed in the top end of the inner wall of the round sleeve, and a push rod is slidably connected to the left side of the round sleeve. According to the utility model, the limiting of the push plate is released, the push plate is moved through the spring I to push the plastic part to move rightwards, the plastic part is assisted to be demoulded from the mould I to reduce the tightness, and the communicating pipe is separated from the inner wall of the mould I, so that the plastic part is separated from the push plate more easily, the plastic part is demoulded from the mould I more easily, and the occurrence of damage is reduced; the processing quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of plastic injection mould, especially to a plastic injection mould capable of automatic discharging. BACKGROUND

[0002] The injection mould is a tool that melts the plastic raw material, injects it into a specific shape cavity under certain pressure, and solidifies after cooling to form a plastic product with the required shape and size. In the plastic product manufacturing industry, the injection mould, as a key production equipment, its design and manufacturing level directly affect the molding quality and production efficiency of the product.

[0003] The traditional injection mould fills the cavity with plastic melt, and after a period of pressure maintaining and cooling, the plastic gradually solidifies. Finally, the mould is opened, and the molded plastic product is pushed out of the mould by the ejector device.

[0004] However, due to the close fit between the plastic part and the mould, and the strong adhesion during injection, it is difficult to separate the plastic part when the mould is opened, which can easily damage the plastic part. At the same time, the ejector device encounters a large resistance when pushing the plastic part out of the mould, which not only increases the working load of the ejector device, but also reduces the processing quality. Therefore, a plastic injection mould capable of automatic discharging is proposed to solve the above problems. SUMMARY

[0005] In order to make up for the above shortcomings, the utility model provides a plastic injection mould capable of automatic discharging, which aims to improve the problem of "close adhesion between the plastic part and the mould during automatic taking out and discharging, which can easily cause damage during demolding".

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a plastic injection mould capable of automatic discharging, comprising a mould one and a mould two, the right inner wall of the mould one is provided with an injection pipe, the left side of the mould two is provided with a ejector pin, the right side of the mould one is provided with an ejector assembly, the ejector assembly comprises a round sleeve and a extrusion block, the extrusion block is arranged on the upper part of the mould two, the round sleeve is rotationally connected to the right side of the mould one, the inner wall top end of the round sleeve is provided with a sliding groove, the left side of the round sleeve is slidably connected with a push rod, the right side of the push rod is fixedly connected with a disc, the right side of the disc is fixedly connected with a spring one, the top end of the disc is fixedly connected with a sliding block, and the left side of the push rod is threadedly connected with a push plate.

[0007] Further description of the above technical scheme:

[0008] The upper part of the mould two is provided with a reset assembly, the reset assembly comprises a spring two, and the right side of the upper part of the mould two is provided with a positioning groove.

[0009] As a further description of the above technical solutions:

[0010] The inner wall of the circular sleeve is provided with a hollow structure, the sliding block is slidably connected to the inner wall of the sliding groove, and the push rod penetrates through and is arranged on the right and left inner walls of the mold one.

[0011] As a further description of the above technical solutions:

[0012] The inner wall of the circular sleeve is provided with a hollow structure, the sliding block is slidably connected to the inner wall of the sliding groove, and the push rod penetrates through and is arranged on the right and left inner walls of the mold one.

[0013] As a further description of the above technical solutions:

[0014] The right top end of the extrusion block is provided with an inclined surface, the extrusion block is slidably arranged on the top inner wall of the mold one, and the push plate is slidably connected to the left inner wall of the mold one.

[0015] As a further description of the above technical solutions:

[0016] The right side of the push plate is fixedly connected with a communication pipe, the communication pipe is inserted into the inner wall of the mold one, and the communication pipe is in communication with the injection pipe.

[0017] As a further description of the above technical solutions:

[0018] The inner wall of the positioning groove is slidably connected with a positioning block, and the positioning block is fixedly connected to the left side of the extrusion block.

[0019] As a further description of the above technical solutions:

[0020] One end of the spring two is fixedly connected to the top end of the positioning block, and the other end of the spring two is fixedly connected to the top end of the positioning groove.

[0021] The utility model has the advantages of the following:

[0022] 1、The utility model discloses a mold two drives the extrusion block to move and removes the limiting of the push plate, and then the spring one pushes the push plate to move and pushes the plastic part to move right, which assists the plastic part to demould from the mold one and reduces the tightness, and at the same time, the communication pipe is separated from the inner wall of the mold one, so that the plastic part is more easily separated from the push plate, the plastic part is more easily demoulded from the mold one, the damage is reduced, and the processing quality is improved.

[0023] 2. The utility model discloses, through mould two drive plastic part removes mould one outside after, the limiting cooperation spring no. 2 of extruding block is removed simultaneously to make extruding block move outward, and then reduce the compactness of plastic part and extruding block, make the resistance that the ejector pin needs overcome when ejecting plastic part also correspondingly reduce, and then make the ejector pin eject action more smooth, efficient, avoid the damage that causes to plastic part because of too big ejecting resistance, ensure the integrity and quality stability of plastic part, improve plastic part automatic discharge's efficiency and quality. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the three-dimensional structure schematic diagram of whole device in the utility model;

[0025] Figure 2 It is the three-dimensional structure section view schematic diagram of mould two in the utility model;

[0026] Figure 3 It is the three-dimensional structure section view of mould one and round cover and the three-dimensional structure split schematic diagram of push plate in the utility model;

[0027] Figure 4 It is the three-dimensional structure split of mould one and mould two and the three-dimensional structure section view schematic diagram of mould one in the utility model.

[0028] Legend:

[0029] 1, injection tube, 2, round cover, 3, mould one, 4, mould two, 5, extruding block, 6, ejector pin, 21, push plate, 22, communication pipe, 23, spring one, 24, sliding slot, 25, disc, 26, sliding block, 27, push rod, 51, spring two, 52, positioning groove, 53, positioning block. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0031] Reference Figure 1 , Figure 3 and Figure 4The utility model provides an embodiment: a plastic part injection mold of automatic blanking, including mould one 3 and mould two 4, mould one 3 and mould two 4 form injection mold, the right side of mould one 3 is provided with the injection tube 1 of the injection of the plastic raw material after heating and melting under certain pressure in the cavity of specific shape, the left side of mould two 4 is provided with the ejector pin 6 of the automatic blanking of plastic part ejection, the right part inner wall of mould one 3 is provided with the ejection assembly of the convenient ejection of plastic part to the outside and reduce the compactness and make plastic part convenient from mould one 3 demoulding can reduce the damage of the occurrence of the pulling force, and the ejection assembly includes the extruding block 5 of the extrusion push plate 21 of the round sleeve 2 of providing support, extruding block 5 sets up in the upper portion of mould two 4, round sleeve 2 is rotatably connected in the right side of mould one 3, the inner wall top end of round sleeve 2 is provided with the sliding slot 24 of the sliding block 26 moving space, the left side of round sleeve 2 is slidably connected with the push rod 27 of the push plate 21 movement, the right side of push rod 27 is fixedly connected with the disc 25 of the left movement limiting of push rod 27, the right side of disc 25 is fixedly connected with spring one 23, after being extruded by push rod 27 and disc 25, through the reverse force of being extruded makes push rod 27 and disc 25 reset, the top end of disc 25 is fixedly connected with the sliding block 26 of the right side of push plate 21 through the rotation round sleeve 2 drive sliding slot 24 and sliding block 26 rotation makes push rod 27 rotation installation, sliding block 26 makes push rod 27 and round sleeve 2 synchronous rotation, the left side screw thread connection of push rod 27 has the push plate 21 of the auxiliary plastic part outward push, makes plastic part better and mould one 3 demoulding separation.

[0032] Referring to Figure 1 , Figure 2 and Figure 4 , the upper portion of mould two 4 is provided with reset assembly that drives extruding block 5 upwardly moves reset, reset assembly includes spring two 51 that drives extruding block 5 reset through the reverse force of being stretched after being stretched, the right side of the upper portion of mould two 4 is provided with the positioning groove 52 of the positioning block 53 moving space.

[0033] Referring to Figure 1 , Figure 3 and Figure 4, the disc 25 is slidingly connected to the inner wall of the sleeve 2, the other end of the spring 23 is fixedly connected to the right side of the inner wall of the sleeve 2, the inner wall of the sleeve 2 is hollow, which facilitates the placement of the spring 23 and provides space for the movement of the disc 25 and the push rod 27, the sliding block 26 is slidingly connected to the inner wall of the sliding groove 24, the push rod 27 penetrates and is arranged on the right and left inner walls of the mold 3, the right top end of the extrusion block 5 is provided with a slope, which enables the mold 4 to be combined with the mold 3, and the slope of the extrusion block 5 is extruded by the mold 3, so that the extrusion block 5 moves downward to drive the positioning block 53 to stretch the spring 51, and the extrusion block 5 is aligned with the top end of the inner wall of the mold 3 and slides into the mold 3, the push plate 21 is slidingly connected to the left inner wall of the mold 3, and the right side of the push plate 21 is fixedly connected with the communication pipe 22 which injects the plastic melt into the cavity between the mold 3 and the mold 4, the communication pipe 22 is inserted into the inner wall of the mold 3, and the communication pipe 22 is in communication with the injection pipe 1.

[0034] Referring to Figure 1 , Figure 2 and Figure 4 , the positioning groove 52 is slidingly connected with the positioning block 53 supporting the extrusion block 5, the positioning block 53 is fixedly connected to the left side of the extrusion block 5, one end of the spring 51 is fixedly connected to the top end of the positioning block 53, and the other end of the spring 51 is fixedly connected to the top end of the positioning groove 52, and the reverse force of the stretched spring 51 can reset the extrusion block 5.

[0035] Working principle: in use, the mold 3 and the mold 4 start to combine, during the combining process, the mold 3 extrudes the slope of the extrusion block 5 arranged on the upper part of the mold 4, so that the extrusion block 5 moves downward, driving the positioning block 53 to move synchronously in the positioning groove 52 on the right side of the upper part of the mold 4 to stretch the spring 51, at the same time, the extrusion block 5 is guided along the slope and is aligned with the top end of the inner wall of the mold 3 and slides into the mold 3, at the same time, the mold 4 continues to move and slides into the mold 3, the push plate 21 is pushed to move rightward by the movement of the extrusion block 5, the push plate 21 moves to drive the push rod 27 to move, so that the disc 25 slides in the sleeve 2 while extruding the spring 23, and the communication pipe 22 moves with the push plate 21 and is connected with the injection pipe 1, at this time, after the mold 3 and the mold 4 are combined, the injection preparation can be carried out,

[0036] The plastic raw material is heated and melted through the injection tube 1, and then the plastic melt is injected into the mold under a certain pressure. Since the communication tube 22 is connected to the injection tube 1 and is inserted into the inner wall of the mold one 3, the plastic melt flows into the cavity formed between the mold one 3 and the mold two 4 through the communication tube 22. After the plastic melt fills the cavity, it enters the pressure maintaining and cooling stage. In this stage, the mold maintains a certain pressure to ensure that the plastic is fully solidified in the cavity to ensure the dimensional accuracy and density of the plastic part.

[0037] After cooling and forming, the mold starts to open, and the moving mold two 4 separates from the mold one 3. At this time, the moving mold two 4 moves the extrusion block 5 to release the extrusion on the push plate 21. The push rod 27 is pushed to the left side by the reverse force of the spring one 23, and the push plate 21 is moved to the left, applying an outward pushing force to the plastic part to assist in demolding and reducing the tightness of the plastic part and the mold one 3, so that the plastic part can be stably demolded with the mold two 4, and the adhesion between the plastic part and the inner wall of the mold one 3 is reduced. Under the pushing action of the push plate 21 and through the communication tube 22, the plastic part is separated from the inner wall of the mold one 3, making it easier for the plastic part to separate from the push plate 21 and demold from the mold one 3, reducing damage and improving processing quality. In turn, the plastic part gradually separates from the mold one 3.

[0038] When the plastic part is fully separated from the mold one 3, the reset component provided on the upper part of the mold two 4 also plays a role. With the movement of the mold two 4, the previously stretched spring two 51 begins to release the elastic potential energy, and through its reverse force, the positioning block 53 moves upward in the positioning groove 52, and in turn, the extrusion block 5 moves upward to reset. After the extrusion block 5 moves upward, the contact area and adhesion between the plastic part and the extrusion block 5 are reduced, the tightness between the plastic part and the extrusion block 5 is reduced, the pulling force during demolding of the plastic part is reduced, the possibility of damage to the plastic part due to pulling is reduced, and the tightness between the plastic part and the extrusion block 5 is reduced, so that the resistance that the ejector pin 6 needs to overcome when ejecting the plastic part is also reduced, and the ejection action of the ejector pin 6 is more smooth and efficient, avoiding damage to the plastic part due to excessive ejection resistance, ensuring the integrity and quality stability of the plastic part, improving the efficiency and quality of automatic unloading of the plastic part. At this time, the ejector pin 6 provided on the left side of the mold two 4 completely ejects the plastic part that has been separated from the mold one 3, realizes automatic unloading, and improves the production efficiency and product quality.

[0039] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, the made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A plastic injection mold capable of automatic material feeding, comprising mold one (3) and mold two (4), characterized in that: The right inner wall of the mold 1 (3) is provided with an injection tube (1), the left side of the mold 2 (4) is provided with an ejector pin (6), the right side of the mold 1 (3) is provided with an ejector assembly, the ejector assembly includes a sleeve (2) and an extrusion block (5), the extrusion block (5) is provided on the upper part of the mold 2 (4), the sleeve (2) is rotatably connected to the right side of the mold 1 (3), the top of the inner wall of the sleeve (2) is provided with a sliding groove (24), the left side of the sleeve (2) is slidably connected with a push rod (27), the right side of the push rod (27) is fixedly connected with a disc (25), the right side of the disc (25) is fixedly connected with a spring 1 (23), the top of the disc (25) is fixedly connected with a slider (26), and the left side of the push rod (27) is threadedly connected with a push plate (21).

2. The plastic injection mold capable of automatic feeding according to claim 1, characterized in that: The upper part of the mold 2 (4) is provided with a reset component, which includes a spring 2 (51), and a positioning groove (52) is provided on the upper right side of the mold 2 (4).

3. The plastic injection mold capable of automatic material feeding according to claim 1, characterized in that: The disc (25) is slidably connected to the inner wall of the sleeve (2), and the other end of the spring (23) is fixedly connected to the right side of the inner wall of the sleeve (2).

4. The plastic injection mold capable of automatic material feeding according to claim 3, characterized in that: The inner wall of the sleeve (2) is hollow, the slider (26) is slidably connected to the inner wall of the groove (24), and the push rod (27) passes through and is set on the right and left inner walls of the mold (3).

5. A plastic injection mold capable of automatic material feeding according to claim 3, characterized in that: The right top edge of the extrusion block (5) is set as an inclined surface. The extrusion block (5) slides on the top of the inner wall of the mold (3). The push plate (21) is slidably connected to the left inner wall of the mold (3).

6. A plastic injection mold capable of automatic material feeding according to claim 5, characterized in that: A connecting pipe (22) is fixedly connected to the right side of the push plate (21). The connecting pipe (22) is inserted into the inner wall of the mold (3) and is connected to the injection pipe (1).

7. A plastic injection mold capable of automatic material feeding according to claim 2, characterized in that: The inner wall of the positioning groove (52) is slidably connected to a positioning block (53), and the positioning block (53) is fixedly connected to the left side of the extrusion block (5).

8. A plastic injection mold capable of automatic material feeding according to claim 7, characterized in that: One end of the second spring (51) is fixedly connected to the top of the positioning block (53), and the other end of the second spring (51) is fixedly connected to the top of the positioning groove (52).

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