Plastic part injection mold with trimming function

Abstract

The utility model discloses a plastic part injection mold with a trimming function, which belongs to the technical field of plastic part injection molding and comprises a lower mold, a support used for supporting is mounted at the top of the lower mold, a driving part used for providing power is mounted at the top of the support, and a fixing part used for mounting is mounted at the bottom of the driving part. An upper mold used for injection molding machining is installed at the bottom of the fixing part, a driving assembly used for providing power is installed at the top of the fixing part, an edge cutting assembly used for trimming is installed at the top of the fixing part, and the driving assembly can drive the edge cutting assembly to move downwards to conduct edge cutting operation on burrs on the edges of workpieces at the same time. The problems that when plastic products are produced through injection molding of an existing injection mold, burrs exist on the edges of the plastic products, edge cutting operation cannot be conveniently conducted on the burrs on the edges of workpieces at the same time, an existing edge cutting structure is inconvenient to fold, and the finished product quality of the plastic products produced by equipment is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic part injection molding, in particular to a plastic part injection molding mold with a trimming function. Background Art

[0002] Plastic products are a general term for daily necessities and industrial products made of plastic as the main raw material, including products made from injection molding, vacuum forming and other processes using plastic as the raw material. Plastic is a type of synthetic polymer material with plasticity. Together with synthetic rubber and synthetic fiber, it forms the three major synthetic materials that are indispensable to daily life. Specifically, plastic is a material with natural or synthetic resin as the main component, with various additives added. It can be molded into a certain shape under certain conditions of temperature and pressure, and maintains its shape unchanged at room temperature. Injection molds are usually used in the production and processing of plastic products. It is a tool for producing plastic products, and it is also a tool that gives plastic product processing injection molds a complete structure and precise dimensions. Based on the above, current injection molds have burrs when in use, which affects the quality of the finished product.

[0003] When existing injection molds are used to produce plastic products, burrs will appear on the edges of the plastic products. Usually, the workpiece is removed and then trimmed manually, which wastes manpower and material resources. It is not possible to conveniently trim the burrs on the edges of the workpiece at the same time, and the existing trimming structure is not easy to fold up, which affects the quality of the finished plastic products produced by the equipment. Therefore, technical personnel in this field provide a plastic part injection mold with a trimming function to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to provide a plastic part injection mold with a trimming function to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a plastic part injection mold with trimming function, comprising a lower mold, characterized in that: a bracket for supporting is installed on the top of the lower mold, a driving member for providing power is installed on the top of the bracket, a fixing member for installation is installed at the bottom of the driving member, and an upper mold for injection molding is installed at the bottom of the fixing member;

[0006] A driving assembly for providing power is installed on the top of the fixing member, and a trimming assembly for trimming is installed on the top of the fixing member, the driving assembly includes a fixed shaft that passes through the inner side of the driving ring for support, and a rotating ring for driving is sleeved on the outer side of the fixed shaft, two fixed columns for support are installed on the top of the fixing member, a rotating shaft for driving passes through the two fixed columns, a cam for pressing and pushing is sleeved on the outer side of the rotating shaft, and a motor for providing power is installed at one end of the rotating shaft, the trimming assembly includes a groove opened at the bottom of the fixing member, a plurality of sliding rods for connection are penetrated at the top of the fixing member and located in the groove, a spring for support is sleeved on the top of the fixing member and located on the outer side of the sliding rod, the trimming assembly also includes a driving ring installed on the top of the sliding rod for fixing, a tool is installed at the bottom of the sliding rod, one end of the sliding rod is fixedly connected to the driving ring, and the other end of the sliding rod is fixedly connected to the tool, the sliding rod passes through the fixing member and is slidably connected thereto, the fixing member is slidably connected to the bracket, the bracket is fixedly connected to the lower mold, and the rotating ring is rotatably connected to the fixed shaft.

[0007] Preferably, the driving ring has a rectangular ring cross section.

[0008] Preferably, the driving member comprises a cylinder mounted on the top of the bracket, the bottom of the cylinder is connected to a push rod for providing a movable path, the push rod passes through the bracket and is fixedly connected to the fixing member.

[0009] Preferably, the driving assembly comprises a fixed shaft penetrating through the inner side of the driving ring for support, and fixing bars for limiting position are respectively installed on both sides of the tool.

[0010] Preferably, two limiting rods for guiding are respectively installed on the top of the lower mold and on both sides of the bracket, and the limiting rods penetrate the fixing member and are slidably connected thereto.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, by setting a bracket and a fixing part, the lower mold supports the upper mold through the bracket, the driving part can drive the upper mold to approach the lower mold for injection molding of plastic products, the fixing part can support the upper mold, and the driving component can drive the trimming component to move downward to perform trimming operations on the edge of the workpiece at the same time, thereby improving the convenience of the equipment in trimming the burrs of plastic products.

[0013] 2. In the utility model, by setting the groove, the sliding rod and the tool, the spring on the top of the fixing part can support the sliding rod upward, so that the sliding rod in the groove can drive the tool upward, so that the tool is located at the edge of the upper mold, avoiding the tool from affecting the injection molding of the upper mold and the lower mold.

[0014] 3. In the utility model, by setting a rotating ring, a cam and a fixed shaft, the motor can drive the cam to rotate through the rotating shaft, and then the cam presses down the rotating ring outside the fixed shaft, and then the fixed shaft drives the tool to move downward through the sliding rod at the bottom of the driving ring, so that the tool moves downward against the upper mold, and the tool cuts the burrs on the edge of the plastic part, thereby improving the convenience of the equipment in trimming the burrs of plastic parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a left-side cutaway stereoscopic view of the overall structure of the utility model;

[0017] Figure 3 The overall structure of the utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 The overall structure of the utility model Figure 2 Enlarged view of point B in the middle.

[0019] In the figure: 1. lower mold; 2. bracket; 3. fixing part; 4. upper mold; 5. groove; 6. sliding rod; 7. spring; 8. driving ring; 9. tool; 10. fixed shaft; 11. rotating ring; 12. fixed column; 13. rotating shaft; 14. cam; 15. cylinder; 16. push rod; 17. fixing bar; 18. limit rod; 141. motor. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 to Figure 4 In an embodiment of the utility model, a plastic part injection mold with a trimming function includes a lower mold 1, a bracket 2 for support is installed on the top of the lower mold 1, a driving member for providing power is installed on the top of the bracket 2, a fixing member 3 for installation is installed at the bottom of the driving member, an upper mold 4 for injection molding is installed at the bottom of the fixing member 3, a driving component for providing power is installed on the top of the fixing member 3, a trimming component for trimming is installed on the top of the fixing member 3, the fixing member 3 is slidably connected to the bracket 2, and the bracket 2 is fixedly connected to the lower mold 1.

[0022] When in use, the lower mold 1 supports the upper mold 4 through the bracket 2, the driving part can drive the upper mold 4 to approach the lower mold 1 for injection molding of plastic products, the fixing part 3 can support the upper mold 4, and the driving component can drive the trimming component to move downward to perform trimming operations on the burrs on the edge of the workpiece at the same time, thereby improving the convenience of the equipment in trimming burrs on plastic products.

[0023] In one embodiment, specifically, the trimming assembly includes a groove 5 opened at the bottom of the fixing member 3, a plurality of sliding rods 6 for connection are penetrated at the top of the fixing member 3 and located in the groove 5, a spring 7 for support is sleeved on the top of the fixing member 3 and located on the outside of the sliding rod 6, the trimming assembly also includes a driving ring 8 installed on the top of the sliding rod 6 for fixing, a tool 9 for trimming is installed at the bottom of the sliding rod 6, the driving ring 8 has a rectangular ring cross-section, the two ends of the sliding rod 6 are respectively fixedly connected to the driving ring 8 and the tool 9, and the sliding rod 6 penetrates the fixing member 3 and is slidably connected thereto.

[0024] Among them, the spring 7 at the top of the fixing part 3 can support the driving ring 8 at the top of the sliding rod 6 upward, so that the driving ring 8 can drive the tool 9 upward through the sliding rod 6, so that the tool 9 is located at the edge of the upper mold 4, thereby preventing the tool 9 from affecting the injection molding process of the upper mold 4 and the lower mold 1.

[0025] Furthermore, the driving assembly includes a fixed shaft 10 that passes through the inner side of the driving ring 8 for support, a rotating ring 11 that is mounted on the outer side of the fixed shaft 10 for driving, two fixed columns 12 that are mounted on the top of the fixing member 3 for support, a rotating shaft 13 that is mounted between the two fixed columns 12 for driving, a cam 14 that is mounted on the outer side of the rotating shaft 13 for pressing and pushing, a motor 141 that is mounted at one end of the rotating shaft 13 for providing power, and the rotating ring 11 is rotatably connected to the fixed shaft 10.

[0026] In one embodiment, specifically, the motor 141 can drive the cam 14 to rotate through the rotating shaft 13, and then the cam 14 presses down the rotating ring 11 outside the fixed shaft 10, and then the fixed shaft 10 drives the tool 9 to move downward through the sliding rod 6 at the bottom of the driving ring 8, so that the tool 9 moves downward against the upper mold 4, and the tool 9 cuts the burrs on the edge of the plastic part, thereby improving the convenience of the equipment in trimming the burrs of the plastic parts.

[0027] In one embodiment, specifically, the driving member includes a cylinder 15 installed on the top of the bracket 2, and a push rod 16 for providing a movable path is connected to the bottom of the cylinder 15. The push rod 16 passes through the bracket 2 and is fixedly connected to the fixing member 3. The cylinder 15 can drive the fixing member 3 to move up and down through the push rod 16, and the fixing member 3 can drive the upper mold 4 to fit and seal with the lower mold 1 to facilitate injection molding.

[0028] Among them, fixing bars 17 for limiting the position are respectively installed on both sides of the cutter 9. The two fixing bars 17 can limit the cutter 9 to prevent the cutter 9 from excessively moving upward.

[0029] Among them, two limiting rods 18 for guiding are respectively installed on the top of the lower mold 1 and the two sides of the bracket 2. The limiting rods 18 penetrate the fixing part 3 and are slidably connected with it. The limiting rods 18 can guide and limit the fixing part 3 to prevent the fixing part 3 from deflecting or shaking when sliding up and down.

[0030] The working principle of this utility model:

[0031] First, start the cylinder 15, so that it drives the upper mold 4 at the bottom of the fixing part 3 to move downward through the push rod 16, and then the upper mold 4 is engaged with the lower mold 1. At this time, the fixing part 3 slides on the outside of the limit rod 18, and at the same time, the spring 7 at the top of the fixing part 3 supports the driving ring 8 on the top of the sliding rod 6 upward, so that the driving ring 8 drives the tool 9 to move upward through the sliding rod 6, and then the tool 9 is embedded in the groove 5 at the bottom of the fixing part 3. Then, after the injection molding of the plastic product is completed, start the motor 141, so that it drives the cam 14 to rotate through the rotating shaft 13, and then the cam 14 presses down the rotating ring 11 outside the fixed shaft 10. While the rotating ring 11 rotates outside the fixed shaft 10, the fixed shaft 10 drives the tool 9 to move downward through the sliding rod 6 at the bottom of the driving ring 8, and then the tool 9 moves downward against the upper mold 4, and at the same time, the driving ring 8 squeezes the spring 7. At this time, the tool 9 moves downward against the upper mold 4 to trim the burrs on the edge of the plastic part.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A plastic part injection mold with a trimming function, comprising a lower mold (1), characterized in that: A support bracket (2) is installed on the top of the lower mold (1), a driving member for providing power is installed on the top of the support bracket (2), a fixing member (3) for installation is installed on the bottom of the driving member, and an upper mold (4) for injection molding is installed on the bottom of the fixing member (3); A driving assembly for providing power is installed on the top of the fixing member (3), a trimming assembly for trimming is installed on the top of the fixing member (3), the driving assembly comprises a fixed shaft (10) penetrating the inner side of the driving ring (8) for support, a rotating ring (11) for driving is sleeved on the outer side of the fixing shaft (10), two fixed columns (12) for support are installed on the top of the fixing member (3), a rotating shaft (13) for driving is penetrated between the two fixing columns (12), a cam (14) for pressing and pushing is sleeved on the outer side of the rotating shaft (13), a motor (141) for providing power is installed on one end of the rotating shaft (13), the trimming assembly comprises a groove (5) opened at the bottom of the fixing member (3), the fixing member (10) comprises a rotating shaft (11) for driving, and a cam (14) for pressing and pushing is sleeved on the outer side of the rotating shaft (13). A plurality of sliding rods (6) for connection are penetrated through the top of the fixed member (3) and located in the groove (5); a spring (7) for support is sleeved on the top of the fixed member (3) and located outside the sliding rod (6); the trimming assembly further comprises a driving ring (8) mounted on the top of the sliding rod (6) for fixing; a tool (9) is mounted on the bottom of the sliding rod (6); one end of the sliding rod (6) is fixedly connected to the driving ring (8); the other end of the sliding rod (6) is fixedly connected to the tool (9); the sliding rod (6) penetrates the fixed member (3) and is slidably connected thereto; the fixed member (3) is slidably connected to the bracket (2); the bracket (2) is fixedly connected to the lower mold (1); and the rotating ring (11) is rotatably connected to the fixed shaft (10).

2. The plastic part injection mold with trimming function according to claim 1, characterized in that: The driving ring (8) has a rectangular ring cross section.

3. The plastic part injection mold with trimming function according to claim 1, characterized in that: The driving member comprises a cylinder (15) mounted on the top of the bracket (2); the bottom of the cylinder (15) is connected to a push rod (16) for providing a movable path; the push rod (16) passes through the bracket (2) and is fixedly connected to the fixing member (3).

4. The plastic part injection mold with trimming function according to claim 3, characterized in that: Fixing strips (17) for limiting position are respectively installed on both sides of the cutter (9).

5. The plastic part injection mold with trimming function according to claim 1, characterized in that: Two limiting rods (18) for guiding are respectively installed on the top of the lower mold (1) and on both sides of the bracket (2); the limiting rods (18) penetrate the fixing member (3) and are slidably connected thereto.

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