Plastic part cutting machine

Abstract

This application relates to a plastic parts cutting machine, specifically in the field of cutting technology. It includes a support frame, with a cutting mechanism externally mounted on the support frame. A heating tube is fixedly connected to the outside of the support frame. The cutting mechanism includes a support plate, with a limit strip fixedly connected to the outside of the support plate. A second cylinder is fixedly connected to the outside of the support plate, and a transmission block is fixedly connected to the driving end of the second cylinder. A limit assembly is externally mounted on the transmission block, and a push column is fixedly connected to the outside of the limit assembly. A buffer block is fixedly connected to the bottom of the push column. This application features a method where the cutting blade is heated to a preset high temperature by the heating tube. Simultaneously, the second cylinder drives the transmission block to slide along the limit strip. The linkage between the limit groove of the limit plate and the sliding block allows the push column to drive the cutting blade vertically downwards, avoiding workpiece deformation caused by hard impact and ultimately achieving damage-free cutting of plastic parts.

Description

Technical Field

[0001] This utility model relates to the field of cutting technology, and in particular to a plastic parts cutting machine. Background Technology In modern manufacturing, plastics, with their advantages of being lightweight, corrosion-resistant, and easy to mold, are widely used in many fields such as electronics, automobiles, and home furnishings. The processing precision and efficiency of plastic parts directly affect the quality of the final products. As the market demands increasingly more complex structures and dimensional accuracy in plastic parts, cutting, as a key process after molding, has become a crucial factor restricting production efficiency. Plastic part cutting machines, as equipment specifically designed for cutting and separating plastic sheets, pipes, profiles, and irregularly shaped parts, are responsible for accurately dividing semi-finished plastic products according to design requirements. In mass production, they play a vital role in ensuring product consistency and reducing labor costs, making them an indispensable key piece of equipment in the plastic processing industry chain.

[0002] A search revealed Chinese patent publication number CN210589456U, which discloses a plastic parts cutting device, including a machine body, a fan, a heating element, a fixed blade, a protective shell, a moving rod, a machine housing, a connecting rod, a saw blade, a moving plate, a controller, an electric push rod, a handle, casters, a vent, a pipe, a dust collection box, a fixed plate, a cutting blade, a connecting plate, a slide groove, a slider, a motor, a rotating shaft, a rotating rod, a reciprocating rod, and a sliding bar. This utility model has a simple design and can perform ordinary cutting of plastic parts using both the fixed blade and the cutting blade, or process plastic parts using a vertical cutting blade to cut them into products of different shapes. Two different cutting methods can be selected to accelerate cutting efficiency. An internal dust collection box can be installed to collect dust and debris generated during the plastic parts cutting process. The collected powder and debris are then processed through pipes and a fan, ensuring the normal operation of the machine and preventing the accumulation of debris from affecting its operation.

[0003] The aforementioned patent specification mentions that "a vertical cutting blade is used to process plastic parts and cut them into products of different shapes. Two different cutting methods can be selected to speed up the cutting efficiency. An internal dust collection box can be installed to collect the dust and debris generated during the cutting process of plastic parts. Then, the collected powder and debris are treated through pipes and fans to ensure the normal operation of the machine and prevent the accumulation of debris from affecting the machine." The above content can prevent the accumulation of debris from affecting the machine. However, the deformation and bending of the hollowed-out parts during cutting is a prominent problem. Taking mechanical punching as an example, the hollowed-out area reduces the overall structural stability of the plastic part. The connection between the main part and the sub-part is often relatively weak. The instantaneous impact force applied by the punch will cause uneven stress distribution at the connection. The connection part of the hollowed-out edge is prone to bending, warping or even breaking due to the imbalance of force. Therefore, a plastic part cutting machine is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this application is to provide a plastic parts cutting machine, which aims to improve the problem of easy deformation and bending of the hollow parts of some devices.

[0005] The plastic parts cutting machine provided in this application adopts the following technical solution: A plastic parts cutting machine includes a support frame, a secondary part placement ring fixedly connected to the outside of the support frame, a fixing mechanism, a local cooling mechanism, and a cutting mechanism. A heating tube is fixedly connected to the outside of the support frame. The cutting mechanism includes a support plate fixedly connected to the outside of the support frame, a limit strip fixedly connected to the outside of the support plate, a second cylinder fixedly connected to the outside of the support plate, a transmission block fixedly connected to the driving end of the second cylinder, a limit assembly externally provided on the transmission block, a push column fixedly connected to the outside of the limit assembly, and a buffer block fixedly connected to the bottom of the push column. Through the above technical solution: after the plastic part to be cut is placed, the fixing mechanism outside the support frame fixes the workpiece, the heating tube heats the cutter in the cutting mechanism, and then the cylinder two drive transmission block on the support plate slides along the limit strip, and drives the push column to move down through the limit component. The buffer block at the bottom of the push column drives the cutter to contact the workpiece, completing the hot melt cutting. The sub-part falls into the sub-part placement ring. After cutting, the local cooling mechanism works to achieve rapid cooling and shaping. The overall process is stable and efficient, avoiding deformation of the hollowed-out parts.

[0006] Preferably, the local cooling mechanism includes a water collection tank, which is fixedly connected to the outside of the support frame. The top of the water collection tank has a water inlet, and connecting pipes are fixedly connected to both sides of the outside of the water collection tank. Spray nozzles are fixedly connected to the outside of the connecting pipes. The above technical solution involves injecting cooling water through the inlet at the top of the water collection tank, and then connecting pipes on both sides of the water collection tank transport the cooling water to the nozzles. The nozzles spray water onto the cutting area and the cutter to achieve rapid cooling, prevent the plastic parts from deforming due to residual heat, and protect the cutter. The entire process relies on the coordinated operation of various components on the support frame to improve the cutting quality and equipment stability.

[0007] Preferably, the transmission block is slidably connected to the outside of the limiting strip, the push column is slidably connected to the inside of the support frame, and a plurality of cutters are fixedly connected to the bottom of the buffer block; Through the above technical solution: the transmission block slides along the limiting strip, driving the push column to slide inside the support frame, which in turn moves multiple cutters on the buffer block at the bottom of the push column, thus achieving the cutting of the workpiece; the guiding effect of the limiting strip and the support frame ensures that the cutter moves accurately and stably, and the buffer block reduces the impact force during cutting, avoids workpiece deformation, and improves cutting accuracy and effect.

[0008] Preferably, the limiting component includes a limiting plate, the limiting plate being fixedly connected to the outside of the transmission block, and a limiting groove being formed inside the limiting plate; Through the above technical solution: in the limiting assembly, the limiting plate moves with the transmission block, and the limiting groove inside the limiting plate provides movement guidance for related components, ensuring stable power transmission of the transmission block and improving the accuracy and stability of the cutting mechanism.

[0009] Preferably, a sliding block is slidably connected inside the limiting groove, the outer side of the sliding block is slidably connected to the outside of the support plate, and the bottom of the sliding block is fixedly connected to the outside of the pushing column; Through the above technical solution: the sliding block in the limiting groove moves with the transmission mechanism, slides along the outside of the support plate and drives the push column to move. The sliding of the sliding block in the limiting groove, in conjunction with the guidance of the support plate, ensures the accurate movement trajectory of the push column, thereby improving the transmission stability and cutting accuracy of the cutting mechanism.

[0010] Preferably, a water pump is installed inside the water collection tank, the input end of the water pump is fixedly connected to the inside of the water collection tank, the output end of the water pump is fixedly connected to the outside of the connecting pipe, and multiple water guide holes are opened inside the support frame. The above technical solution involves a water pump inside the water collection tank drawing water from the tank and sending it to the connecting pipe via the output end. The cooling water is then transported through the connecting pipe. After cooling is completed, the water flows out through multiple water guide holes inside the support frame. The water pump provides power for the cooling water transport, and the water guide holes prevent water accumulation from affecting equipment operation, ensuring an efficient and orderly cooling process and improving equipment stability.

[0011] Preferably, the fixing mechanism includes a fixing block, the fixing block is fixedly connected to the outside of the support frame, a cylinder is fixedly connected to the inside of the fixing block, a transmission column is fixedly connected to the driving end of the cylinder, and a transmission bar is rotatably connected to the outside of the transmission column. Through the above technical solution: in the fixing mechanism, the fixing block is fixed on the support frame, the cylinder inside the fixing block drives the transmission column to move, and the transmission column drives the externally rotated transmission bar to move, thereby achieving the clamping and fixing of the workpiece and improving the overall reliability of the operation.

[0012] Preferably, in the fixing mechanism, the fixing block is fixed on the support frame, and the cylinder inside the fixing block drives the transmission column to move. The transmission column drives the externally rotatably connected transmission bar to move, thereby clamping and fixing the workpiece. All components work together to ensure that the workpiece does not shift during cutting, providing a stable foundation for precise cutting and improving the reliability of the overall operation. The above technical solution involves fixing the fixed block to the support frame. When the cylinder inside the fixed block is activated, it drives the transmission column to move. The transmission column then drives the transmission bar connected to it to rotate, thereby clamping and fixing the workpiece. During this process, the fixed block provides stable support, the cylinder provides power, and the transmission column and transmission bar transmit power, ensuring that the workpiece does not deviate during cutting, laying the foundation for accurate cutting and improving the reliability of the operation.

[0013] In summary, this application includes at least one of the following beneficial technical effects: 1. The cutting blade is heated to a preset high temperature by a heating tube, and the connection between the main plastic part and the sub-part is separated by heat melting. Compared with traditional mechanical punching, this method can reduce the debris generated during the cutting process from the source, maintain the cleanliness of the processing environment and the integrity of the workpiece. At the same time, the cylinder two drive transmission block slides along the limit strip, and the linkage between the limit groove of the limit plate and the sliding block allows the push column to drive the cutting blade to move vertically downward. The whole process is precise and stable, ensuring that the cutting blade can accurately act on the connection, avoiding workpiece deformation caused by hard impact. This perfectly solves the problem of easy deformation and bending of hollow plastic parts in traditional punching, and finally achieves non-destructive cutting of plastic parts. 2. Cooling water is delivered to the cutting area and cutter through the nozzle, which can quickly reduce the temperature of the plastic parts, avoid deformation after cutting due to residual heat, and ensure the stability of the shape of the plastic parts. Multiple water guide holes inside the support frame can drain the cooling water in time, avoiding water accumulation that may affect the operation of the equipment or cause the plastic parts to become damp again. This not only ensures the quality stability of the cut products, but also improves the operational reliability of the equipment. Attached Figure Description Figure 1 This is a three-dimensional schematic diagram of the plastic parts cutting machine proposed in this utility model.

[0014] Figure 2 This is a schematic diagram of the structure of the fixing block of the plastic parts cutting machine proposed in this utility model.

[0015] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0016] Figure 4 This is a schematic diagram of the buffer block of the plastic parts cutting machine proposed in this utility model.

[0017] Figure 5 yes Figure 4 Enlarged view of point B in the middle.

[0018] Explanation of reference numerals in the attached figures: 1. Support frame; 2. Sub-component placement ring; 3. Heating tube; 4. Fixing mechanism; 41. Fixing block; 42. Cylinder 1; 43. Transmission column; 44. Transmission bar; 45. Limiting connecting plate; 46. Limiting block; 5. Local cooling mechanism; 51. Water collection tank; 52. Water inlet; 53. Connecting pipe; 54. Nozzle; 6. Cutting mechanism; 61. Support plate; 62. Limiting bar; 63. Transmission block; 64. Cylinder 2; 65. Limiting assembly; 651. Limiting plate; 652. Limiting groove; 653. Sliding block; 66. Push column; 67. Buffer block; 68. Cutter; 7. Water guide hole. Detailed Implementation

[0019] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0020] Example: Plastic parts cutting machine, see reference Figures 1 to 3 The system includes a support frame 1, which supports all components and ensures structural stability. A secondary component placement ring 2 is fixedly connected to the outside of the support frame 1. The secondary component placement ring 2 is used to receive secondary components cut and separated from the main component, preventing them from falling and facilitating collection. A fixing mechanism 4 is provided on the outside of the support frame 1. The fixing mechanism 4 is used to clamp and fix the plastic parts to be cut, preventing the workpiece from shifting during the cutting process. A local cooling mechanism 5 is provided on the outside of the support frame 1. The local cooling mechanism 5 cools down the cut plastic parts and the cutter 68 to prevent deformation caused by residual heat. A cutting mechanism 6 is provided on the outside of the support frame 1. The cutting mechanism 6 enables precise cutting of the plastic parts. A heating tube 3 is fixedly connected to the outside of the support frame 1. The heating tube 3 provides heat to the cutter 68, heating the cutter 68 to the temperature required for hot melting. The cutting mechanism 6 includes a support plate 61, which provides stable support for fixing the cutting mechanism 6. The support plate 61 is externally fixedly connected to the outside of the support frame 1. A limit strip 62 is fixedly connected to the outside of the support plate 61, which provides guidance for the sliding of the transmission block 63. A cylinder 64 is fixedly connected to the outside of the support plate 61. The cylinder 64 is used to drive the transmission block 63 to move. The drive end of the cylinder 64 is fixedly connected to the transmission block 63. The transmission block 63 transmits the power of the cylinder 64 and drives the limit component 65 to move. The limit component 65 is provided on the outside of the transmission block 63. The limit component 65 is used to further constrain the movement direction of the push column 66 and ensure transmission stability. The push column 66 is fixedly connected to the outside of the limit component 65. The push column 66 transmits power to the buffer block 67 and the cutter 68, causing them to move up and down. The bottom of the push column 66 is fixedly connected to the buffer block 67, which is used to buffer the impact force during cutting and reduce stress damage to the workpiece. The transmission block 63 is externally slidably connected to the outside of the limiting strip 62, the push column 66 is externally slidably connected to the inside of the support frame 1, and multiple cutters 68 are fixedly connected to the bottom of the buffer block 67. The cutters 68 directly contact the plastic parts and separate the main parts and the sub-parts through high temperature hot melting. The limiting component 65 includes a limiting plate 651, which moves with the transmission block 63, supports the limiting groove 652 and transmits power. The limiting plate 651 is fixedly connected to the outside of the transmission block 63. The limiting groove 652 is formed inside the limiting plate 651. The limiting groove 652 provides path constraints for the sliding block 653 to ensure that its movement direction is correct. The sliding block 653 is slidably connected inside the limiting groove 652. The sliding block 653 connects the limiting plate 651 and the push column 66, transmits power and assists in guidance. The outside of the sliding block 653 is slidably connected to the outside of the support plate 61, and the bottom of the sliding block 653 is fixedly connected to the outside of the push column 66.

[0021] Specifically, after the plastic part to be cut is placed on the support frame 1, the fixing mechanism 4 is activated to clamp the workpiece to prevent it from shifting. Then the heating tube 3 works to heat the cutter 68 to the temperature required for heat melting. At the same time, the cylinder 64 in the cutting mechanism 6 drives the transmission block 63 to slide along the limiting strip 62. The transmission block 63 drives the limiting plate 651 of the limiting component 65 to move, so that the sliding block 653 in the limiting groove 652 slides along the support plate 61 and pushes the pushing column 66 to move down in the support frame 1. The buffer block 67 at the bottom of the pushing column 66 drives the cutter 68 to contact the workpiece. The main part and the sub-part are separated by high temperature heat melting. The separated sub-part falls into the sub-part placement ring 2. After the cutting is completed, the local cooling mechanism 5 cools the workpiece and the cutter 68. The entire process achieves cutting with the help of the cooperation of various components.

[0022] Reference Figure 4 and Figure 5 The local cooling mechanism 5 includes a water collection tank 51, which stores cooling water and provides a water source for the cooling system. The water collection tank 51 is fixedly connected to the outside of the support frame 1. A water inlet 52 is provided on the top of the water collection tank 51 for replenishing cooling water to the water collection tank 51. Connecting pipes 53 are fixedly connected to both sides of the outside of the water collection tank 51. The connecting pipes 53 transport cooling water and connect the water collection tank 51 to the nozzle 54. The nozzle 54 is fixedly connected to the outside of the connecting pipe 53. The nozzle 54 sprays cooling water precisely onto the cutting part and the cutter 68 to achieve cooling. The water collection tank 51 is equipped with a water pump, which provides power to pump the cooling water in the water collection tank 51 into the connecting pipe 53. The input end of the water pump is fixedly connected to the inside of the water collection tank 51, and the output end of the water pump is fixedly connected to the outside of the connecting pipe 53. The support frame 1 has multiple water guide holes 7 inside. The fixing mechanism 4 includes a fixing block 41, which provides support for the fixing mechanism 4. The fixing block 41 is externally fixedly connected to the outside of the support frame 1. A cylinder 42 is internally fixedly connected to the fixing block 41. The cylinder 42 drives the transmission column 43 to move. The drive end of the cylinder 42 is fixedly connected to the transmission column 43. The transmission column 43 transmits the power of the cylinder 42, driving the transmission bar 44 to rotate. The transmission bar 44 is rotatably connected to the outside of the transmission column 43. The transmission bar 44 achieves clamping or loosening of the workpiece by rotating. A limit block 46 is externally fixedly connected to the fixing block 41. The limit block 46 fixes one end of the limit plate 45, providing it with a rotation fulcrum. The limit plate 45 is rotatably connected to the outside of the limit block 46. The other end of the limit plate 45 is rotatably connected to the outside of the transmission bar 44. The limit plate 45 constrains the rotation trajectory of the transmission bar 44, ensuring stable and reliable clamping action.

[0023] Specifically, when the local cooling mechanism 5 is working, the cooling water stored in the water collection tank 51 is replenished through the top water inlet 52. The water pump inside the water collection tank 51 provides power to transport the cooling water to the nozzle 54 through the connecting pipe 53. The nozzle 54 sprays the cooling water onto the cutting part and the cutter 68 to achieve cooling. The used cooling water is discharged through the water guide hole 7 inside the support frame 1. At the same time, in the fixing mechanism 4, the cylinder 42 in the fixing block 41 drives the transmission column 43 to move. The transmission column 43 drives the transmission bar 44 to rotate. The limit block 46 constrains the rotation trajectory of the limit connecting plate 45, so that the transmission bar 44 can stably complete the clamping or loosening action of the workpiece. The entire process ensures the cooling and fixing effect through the cooperation of various components.

[0024] The implementation principle of this application embodiment is as follows: After the plastic main part to be processed is placed in the cutting area of ​​the support frame 1, the transmission column 43 is driven to extend axially by the cylinder 42 in the fixing block 41. The end of the transmission column 43 pushes the transmission bar 44, so that the transmission bar 44 rotates with the connection point with the limiting plate 45 as the fulcrum. At this time, the other end of the limiting plate 45 swings synchronously around the rotation axis of the limiting block 46, and finally drives the two sets of symmetrical clamping components to approach the edge of the plastic main part, and firmly fix it on the support frame 1.

[0025] Meanwhile, the heating pipe 3 outside the support frame 1 transfers heat to the cutter 68 of the cutting mechanism 6 through heat conduction. The cutter 68 enters the cutting state. When the cutter 68 reaches the preset temperature, the cylinder 64 on the support plate 61 drives the transmission block 63 to slide downward along the guide direction of the limiting strip 62. The transmission block 63 simultaneously drives the limiting plate 651 to move downward. At this time, the sliding block 653 in the limiting groove 652 slides along the surface of the support plate 61. Through the linkage, the pushing column 66 is pushed to move vertically downward along the internal slide of the support frame 1. The buffer block 67... The multiple cutters 68 at the bottom slowly contact the connection between the main plastic part and the sub-part. Since the cutters 68 have been heated to a high temperature, the plastic at the connection point melts and separates instantly through thermal melting. After the cutting is completed, the cutters 68 remain in place temporarily. The water pump in the water tank 51 delivers cooling water to the nozzles 54 on both sides through the connecting pipe 53. The nozzles 54 spray cooling water at the cutting area and the cutters 68 to quickly reduce the temperature of the plastic part. The cooling water is then discharged through multiple water guide holes 7 inside the support frame 1 to prevent residual heat from causing deformation of the plastic part.

[0026] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A plastic parts cutting machine, comprising a support frame (1), characterized in that: The support frame (1) is fixedly connected to the outside of a component placement ring (2), the support frame (1) is provided with a fixing mechanism (4), the support frame (1) is provided with a local cooling mechanism (5), the support frame (1) is provided with a cutting mechanism (6), and the support frame (1) is fixedly connected to the outside of a heating tube (3). The cutting mechanism (6) includes a support plate (61), which is fixedly connected to the outside of the support frame (1). A limit strip (62) is fixedly connected to the outside of the support plate (61). A cylinder (64) is fixedly connected to the outside of the support plate (61). A transmission block (63) is fixedly connected to the driving end of the cylinder (64). A limit component (65) is provided on the outside of the transmission block (63). A push column (66) is fixedly connected to the outside of the limit component (65). A buffer block (67) is fixedly connected to the bottom of the push column (66).

2. The plastic parts cutting machine according to claim 1, characterized in that: The local cooling mechanism (5) includes a water collection tank (51), which is fixedly connected to the outside of the support frame (1). The top of the water collection tank (51) is provided with a water inlet (52), and connecting pipes (53) are fixedly connected to both sides of the outside of the water collection tank (51). Spray nozzles (54) are fixedly connected to the outside of the connecting pipes (53).

3. The plastic parts cutting machine according to claim 1, characterized in that: The transmission block (63) is externally slidably connected to the outside of the limiting strip (62), the push column (66) is externally slidably connected to the inside of the support frame (1), and the bottom of the buffer block (67) is fixedly connected to multiple cutters (68).

4. The plastic parts cutting machine according to claim 3, characterized in that: The limiting component (65) includes a limiting plate (651), which is fixedly connected to the outside of the transmission block (63), and a limiting groove (652) is formed inside the limiting plate (651).

5. The plastic parts cutting machine according to claim 4, characterized in that: The limiting groove (652) is slidably connected to a sliding block (653), the sliding block (653) is slidably connected to the outside of the support plate (61), and the bottom of the sliding block (653) is fixedly connected to the outside of the push column (66).

6. The plastic parts cutting machine according to claim 2, characterized in that: The water collection tank (51) is equipped with a water pump. The input end of the water pump is fixedly connected to the inside of the water collection tank (51), and the output end of the water pump is fixedly connected to the outside of the connecting pipe (53). The support frame (1) has multiple water guide holes (7) inside.

7. The plastic parts cutting machine according to claim 1, characterized in that: The fixing mechanism (4) includes a fixing block (41), which is fixedly connected to the outside of the support frame (1). A cylinder (42) is fixedly connected inside the fixing block (41). A transmission column (43) is fixedly connected to the drive end of the cylinder (42). A transmission bar (44) is rotatably connected to the outside of the transmission column (43).

8. The plastic parts cutting machine according to claim 7, characterized in that: The fixed block (41) is fixedly connected to a limiting block (46), the limiting block (46) is rotatably connected to a limiting connecting plate (45), and the other end of the limiting connecting plate (45) is rotatably connected to the outside of the transmission bar (44).

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