Injection molding part mold for automobile plastic part

Abstract

The invention relates to an injection molding part mold for an automobile plastic part. The injection molding part mold comprises a movable mold part and a fixed mold part, the movable mold piece comprises a movable mold base, a movable mold core and a groove forming piece moving mechanism. The movable mold core is arranged on the movable mold base; the groove forming piece moving mechanism comprises a rack, a bevel gear, a profiling protruding block and a driving device. The rack is slidably arranged on the movable mold base; a rotating shaft is arranged on the movable mold core, and the profiling protruding block is rotationally arranged on the movable mold core through the rotating shaft. The upper end part of the bevel gear is fixed on the rotating shaft, and the bevel gear is meshed with the rack; the driving device is arranged on the movable mold base and used for driving the rack to move. The fixed mold piece comprises a fixed mold base and a fixed mold core; and the fixed mold core is arranged on the fixed mold base. According to the invention, the component on the die can be quickly separated from the flanging structure of the product, and the yield of the product is improved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding processing, in particular to an injection molding mold for automobile plastic parts. Background Art

[0002] Plastic injection molded parts for automobiles are an important part of automobile manufacturing, with a wide range of applications and various types. These injection molded parts are made by processing plastic materials into the desired shape through the injection molding process to meet the functional and aesthetic requirements of various parts of the car. There are many types of plastic injection molded parts for automobiles, including but not limited to ABS plastic shells, PP injection molded special-shaped parts, nylon injection molded parts, etc. These injection molded parts can be customized according to the specific needs of the car to meet the functional requirements of different parts. For example, ABS plastic shells are often used in the outer shell of the car because of its good impact resistance and aesthetics; while PP injection molded special-shaped parts may be used for the internal parts of the car, such as electrical housings.

[0003] like Figure 1 As shown, it is a plastic part for automobiles, wherein a circular groove is provided in the middle thereof, and a flange is provided on the circular groove. After injection molding in a mold, it is difficult for the mold to separate from the flange on the plastic part, and the yield rate is relatively low. Summary of the invention

[0004] The object of the present invention is to provide an injection mold for automobile plastic parts, which can quickly separate the parts on the mold from the flange structure of the product and improve the yield of the product.

[0005] In order to achieve the above-mentioned purpose of the invention, an injection mold for automobile plastic parts is provided, comprising a movable mold part and a fixed mold part;

[0006] The movable mold part includes a movable mold base, a movable mold core and a groove forming part moving mechanism;

[0007] The movable mold core is arranged on the movable mold base, and the movable mold core is adapted to the injection molded product to be formed;

[0008] The groove forming member moving mechanism comprises a rack, a bevel gear, a contoured convex block and a driving device;

[0009] The rack is slidably arranged on the movable mold base;

[0010] The movable mold core is provided with a rotating shaft, and the profiling convex block is rotatably arranged on the movable mold core through the rotating shaft, and the profiling convex block is adapted to the injection molded part to be formed;

[0011] The upper end of the bevel gear is fixed on the rotating shaft, and the bevel gear is meshed with the rack;

[0012] The driving device is arranged on the movable mold base and is used to drive the rack to move;

[0013] The fixed mold part includes a fixed mold base and a fixed mold core;

[0014] The fixed mold core is arranged on the fixed mold base, and the fixed mold core is adapted to the injection molded part to be formed.

[0015] Preferably, two limit blocks are provided on the movable mold base, and the rack passes through the two limit blocks respectively.

[0016] Specifically, the driving device is a cylinder.

[0017] Specifically, the movable mold core is slidably arranged on the movable mold base through the limit screw;

[0018] The corners of the movable mold core are provided with connection holes;

[0019] The fixed mold core is provided with rubber plugs at positions corresponding to the connecting holes.

[0020] Preferably, the fixed mold part is also provided with an ejection mechanism, and the ejection mechanism comprises a support plate, a driving member, an ejector pin and an inclined ejector bar;

[0021] The support plate is located in the fixed mold base and is slidably arranged;

[0022] The driving member is arranged on the fixed die seat and is used to drive the support plate to move;

[0023] A plurality of ejector pins and a plurality of inclined ejector bars are arranged on the side of the support plate facing the fixed mold core, and the ejector pins and the inclined ejector bars penetrate through the fixed mold core.

[0024] Specifically, the driving member is a cylinder.

[0025] Preferably, a plurality of return springs are provided on the fixed die seat, and the return springs are located at the rear end of the support plate, and one end of the return springs is connected to the support plate, and the other end is connected to the fixed die seat.

[0026] Preferably, the fixed mold base is provided with a lifting lug.

[0027] Preferably, the movable mold seat is provided with guide columns, and the fixed mold seat is provided with guide holes, and the guide holes correspond to the guide columns one by one.

[0028] Preferably, a locking block is provided on the fixed mold member, and two ends of the locking block are respectively connected to the fixed mold base and the movable mold base through bolts.

[0029] Compared with the prior art, the injection mold for automobile plastic parts of the present invention has the following advantages:

[0030] (1) By arranging a groove molding part moving mechanism on the movable mold part, the driving device drives the rack to move, thereby realizing the rotation of the bevel gear, the rotation of the rotating shaft, and thus driving the contoured protrusion to rotate, so that the molded injection molded part is separated from the contoured protrusion, and the flange on the injection molded part is separated from the mold part, thereby effectively improving the product yield and demolding speed;

[0031] (2) An ejection mechanism is provided on the fixed mold to quickly and effectively eject the product from the fixed mold core and avoid damage to the parts on the product;

[0032] (3) Simple structure and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of an automobile plastic part in the background technology;

[0034] Figure 2 This is a schematic structural diagram of an injection mold for automotive plastic parts in this embodiment;

[0035] Figure 3 Schematic diagram of the structure of the movable module in this embodiment;

[0036] Figure 4 is a schematic structural diagram of the groove forming member moving mechanism in this embodiment;

[0037] Figure 5 Schematic diagram of the working state of the groove forming member moving mechanism in this embodiment;

[0038] Figure 6 Schematic diagram of the structure of the fixed mold in this embodiment;

[0039] Figure 7 Schematic diagram of the internal structure of the fixed mold in this embodiment. DETAILED DESCRIPTION

[0040] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0041] like Figure 2 As shown, an injection mold for automobile plastic parts of this embodiment includes a movable mold part 1 and a fixed mold part 2.

[0042] like Figure 3 As shown, the movable mold part 1 includes a movable mold base 3, a movable mold core 4 and a groove molding part moving mechanism; the movable mold core 4 is arranged on the movable mold base 3, and the movable mold core 4 is adapted to the injection molded product to be molded.

[0043] like Figure 4As shown, the groove forming member moving mechanism includes a rack 5, a bevel gear 6, a contoured protrusion 7 and a driving device 8; the rack 5 is slidably arranged on the movable die seat 3; in this embodiment, two limit blocks 9 are arranged on the movable die seat 3, and the rack 5 passes through the two limit blocks 9 respectively; in this way, as shown in FIG. Figure 5 As shown, the two limit blocks 9 limit the rack 5 to prevent it from deviating.

[0044] The movable mold core 4 is provided with a rotating shaft 10, and the profiling protrusion 7 is rotatably arranged on the movable mold core 4 by the rotating shaft 10, and the profiling protrusion 7 is adapted to the injection molded part to be formed; the upper end of the bevel gear 6 is fixed on the rotating shaft 10, and the bevel gear 6 is meshed with the rack 5; the driving device 8 is arranged on the movable mold base 3, and is used to drive the rack 5 to move, thereby realizing the rotation of the bevel gear 6, the rotation of the rotating shaft 10, and thus driving the profiling protrusion 7 to rotate, so that the molded injection molded part is separated from the profiling protrusion 7, and the flange on the product 24 is separated from the mold component.

[0045] In this embodiment, the driving device 8 is a cylinder.

[0046] like Figure 6 As shown, the fixed mold part 2 includes a fixed mold base 11 and a fixed mold core 12; the fixed mold core 12 is arranged on the fixed mold base 11, and the fixed mold core 12 is adapted to the injection molded part to be formed.

[0047] In this embodiment, the movable mold core 4 is slidably set on the movable mold base 3 through the limit screw; the corners of the movable mold core 4 are provided with connecting holes 13; the positions of the fixed mold core 12 corresponding to the connecting holes 13 are provided with rubber plugs 14; with such a configuration, after moving the movable mold part 1, the rubber plug 14 on the fixed mold core 12 pulls the movable mold core 4, and finally the injection molded part is slowly separated from the movable mold core 4.

[0048] In this embodiment, if Figure 7 As shown, the fixed mold part 2 is also provided with an ejection mechanism, which includes a support plate 15, a driving member 16, an ejector pin 17 and an inclined ejector bar 18; the support plate 15 is located in the fixed mold base 11 and is slidably arranged; the driving member 16 is arranged on the fixed mold base 11, and is used to drive the support plate 15 to move; a plurality of ejector pins 17 and a plurality of inclined ejector bars 18 are arranged on the side of the support plate 15 facing the fixed mold core 12, and the ejector pins 17 and the inclined ejector bars 18 penetrate the fixed mold core 12; in this arrangement, the support plate 15 is driven to move by the driving member 16, and the ejector pins 17 and the inclined ejector bars 18 eject the injection molded product.

[0049] In this embodiment, the driving member 16 is a cylinder.

[0050] In this embodiment, a plurality of return springs 19 are provided on the fixed die seat 11. The return spring 19 is located at the rear end of the support plate 15, and one end of the return spring 19 is connected to the support plate 15, and the other end is connected to the fixed die seat 11. With such an arrangement, after the ejection mechanism ejects the product, it is reset under the action of the return spring 19.

[0051] In this embodiment, a lifting lug 20 is provided on the fixed mold base 11 to facilitate transportation by an external lifting device.

[0052] In this embodiment, the movable mold base 3 is provided with a guide column 21, and the fixed mold base 11 is provided with a guide hole 22, and the guide hole 22 corresponds to the guide column 21 one by one; such an arrangement facilitates the fast and accurate mold closing of the movable mold 1 and the fixed mold 2.

[0053] In this embodiment, a locking block 23 is provided on the fixed mold member 2, and both ends of the locking block 23 are connected to the fixed mold base 2 and the movable mold base 1 by bolts respectively, which plays a locking role to prevent the movable mold member 1 and the fixed mold member 2 from separating during transportation.

[0054] Before the injection molding is performed, the movable mold 1 and the fixed mold 2 are first molded together through the guide column 21 and the guide hole 22, and then loaded into the injection molding machine for injection molding. After completion, the external driving device drives the movable mold 1 to separate from the fixed mold 2, and at the same time, drives the oil cylinder to rotate the bevel gear 6 and the rotating shaft 10, thereby driving the contoured protrusion 7 to rotate, so that the molded product 24 is separated from the contoured protrusion 7, and the flange on the injection molding is separated from the mold component. In addition, due to the action of the rubber plug 14 on the fixed mold core 12, the movable mold core 4 is slowly separated from the product 24, and finally the product 24 is ejected from the fixed mold core 12 through the ejection mechanism.

[0055] The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An injection mold for automobile plastic parts, characterized in that: Including movable mold parts and fixed mold parts; The movable mold part includes a movable mold base, a movable mold core and a groove forming part moving mechanism; The movable mold core is arranged on the movable mold base, and the movable mold core is adapted to the injection molded product to be formed; The groove forming member moving mechanism comprises a rack, a bevel gear, a contoured convex block and a driving device; The rack is slidably arranged on the movable mold base; The movable mold core is provided with a rotating shaft, and the profiling convex block is rotatably arranged on the movable mold core through the rotating shaft, and the profiling convex block is adapted to the injection molded part to be formed; The upper end of the bevel gear is fixed on the rotating shaft, and the bevel gear is meshed with the rack; The driving device is arranged on the movable mold base and is used to drive the rack to move; The fixed mold part includes a fixed mold base and a fixed mold core; The fixed mold core is arranged on the fixed mold base, and the fixed mold core is adapted to the injection molded part to be formed.

2. The injection mold for automobile plastic parts according to claim 1, characterized in that: The movable mold base is provided with two limit blocks, and the rack passes through the two limit blocks respectively.

3. An injection mold for automobile plastic parts according to claim 1 or 2, characterized in that: The driving device is a cylinder.

4. The injection mold for automobile plastic parts according to claim 1, characterized in that: The movable mold core is slidably arranged on the movable mold base through the limit screw; The corners of the movable mold core are provided with connection holes; The fixed mold core is provided with rubber plugs at positions corresponding to the connecting holes.

5. The injection mold for automobile plastic parts according to claim 1, characterized in that: The fixed mold part is also provided with an ejection mechanism, which includes a support plate, a driving part, an ejector pin and an inclined ejector bar; The support plate is located in the fixed mold base and is slidably arranged; The driving member is arranged on the fixed die seat and is used to drive the support plate to move; A plurality of ejector pins and a plurality of inclined ejector bars are arranged on the side of the support plate facing the fixed mold core, and the ejector pins and the inclined ejector bars penetrate through the fixed mold core.

6. The injection mold for automobile plastic parts according to claim 5, characterized in that: The driving member is a cylinder.

7. The injection mold for automobile plastic parts according to claim 5, characterized in that: The fixed die seat is provided with a plurality of return springs, the return springs are located at the rear end of the support plate, one end of the return springs is connected to the support plate, and the other end is connected to the fixed die seat.

8. The injection mold for automobile plastic parts according to claim 1, characterized in that: The fixed die seat is provided with a lifting lug.

9. The injection mold for automobile plastic parts according to claim 1, characterized in that: The movable die seat is provided with guide columns, and the fixed die seat is provided with guide holes, and the guide holes correspond to the guide columns one by one.

10. The injection mold for automobile plastic parts according to claim 1, characterized in that: The fixed die member is provided with a locking block, and the two ends of the locking block are respectively connected to the fixed die seat and the movable die seat through bolts.

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