Edge cutting equipment for plastic product production

Abstract

The invention relates to the field of plastic product production, and particularly discloses edge cutting equipment for plastic product production, which comprises a hollow rack and a plastic workpiece, the top of the rack is provided with a processing groove, and the middle of the inner side of the processing groove is provided with a positioning platform deck for supporting the plastic workpiece. An edge cutting mechanism is arranged on the machine frame and comprises a gear rotationally connected to the middle of the inner side of the lower end of the machine frame, a speed reducer used for driving the gear to rotate is arranged at the bottom of the inner side of the machine frame, and racks arranged at different heights are meshed with the periphery of the gear respectively. According to the edge cutting equipment for plastic product production, burrs and flashes can be cut off from the side faces of the periphery of a plastic workpiece at the same time through the arranged edge cutting mechanism, the plastic workpiece can be centered before edge cutting, the edge cutting precision is ensured, the structure is compact, and efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of plastic product production, and in particular to an edge trimming device for plastic product production. Background Art

[0002] Plastic products are generally made through mold processing, but there will inevitably be gaps between the molds, which will cause burrs and flash on the plastic products processed by the molds. Burrs and flash will directly affect the appearance and use of plastic products.

[0003] In the prior art, there are two main methods for removing burrs and flash from the sides of some rectangular plastic products: manual and automatic. Manual removal of burrs and flash not only has poor precision but also affects efficiency and even poses a safety hazard. Automatic removal of burrs and flash generally requires first removing the burrs and flash from one or two surfaces, and then adjusting the direction of the product or the direction of the cutting mechanism to remove the burrs and flash from the remaining sides. The whole process is relatively slow, affecting efficiency. In addition, the existing automatic trimming equipment requires manual removal of the plastic product and fixing a new one after trimming is completed before continuing processing. Loading and unloading and positioning are cumbersome, affecting processing efficiency.

[0004] Therefore, it is necessary to propose a trimming device for plastic product production to solve the above problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a trimming device for plastic product production, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is: A trimming device for producing plastic products, comprising a frame with a hollow interior and a plastic workpiece, wherein a processing groove is arranged on the top of the frame, a positioning platform for supporting the plastic workpiece is arranged in the middle of the inner side of the processing groove, and a trimming mechanism is arranged on the frame, wherein the trimming mechanism comprises a gear rotatably connected to the middle of the inner side of the lower end of the frame, a reducer for driving the gear to rotate is arranged at the inner bottom of the frame, and racks arranged at unequal heights are respectively meshed around the gears, and a "U"-shaped traction plate is fixedly connected to one end of the rack, and the traction plate extends to the outside of the frame at one end away from the rack, and the upper end of the traction plate extends to the processing groove, and the ends of the four traction plates extending to the inner side of the processing groove respectively correspond to the four sides of the positioning platform, and the traction plate cooperates with the movable guide of the frame, and the traction plate extends to the top of one end of the inner side of the processing groove. A trimming seat is provided, and the movable direction of the trimming seat is perpendicular to the movable direction of the rack, a tool holder is provided on the top of the trimming seat, and trimming knives are symmetrically provided on both sides of one end of the tool holder close to the positioning platform, a bracket is provided at the corresponding positions on the top of the trimming seat and the two sides of the tool holder, and a positioning roller is rotatably connected to the side of the bracket close to the positioning platform, and a guide roller is rotatably provided on the top of the bracket, and second straight grooves corresponding to the positioning rollers are respectively provided on the four sides of the bottom of the top plate, and the four second straight grooves respectively correspond to the four sides of the positioning platform, and the length of the second straight groove is not less than the length of the side of the plastic workpiece, an oblique groove is provided at one end of the first straight groove, and the guide roller is used for movably guiding and connecting with the oblique groove and the second straight groove, and is configured so that when the guide roller is located in the second straight groove, the positioning rollers on the four trimming seats just center the plastic workpiece on the positioning platform.

[0007] Preferably, a positioning assembly for pressing the plastic workpiece is provided at the upper end of the top plate, and the positioning assembly includes a gantry fixedly arranged on the top of the top plate, a lifting frame is provided below the gantry, a cylinder for driving the lifting frame to rise and fall is provided on the top of the gantry, a pressing plate corresponding to the positioning platform is provided at the bottom of the lifting frame, and a through groove corresponding to the pressing plate and the positioning platform is provided in the middle of the top plate, so that the pressing plate can pass through the through groove when it moves downward to press the plastic workpiece on the top of the positioning platform.

[0008] Preferably, a second guide rod is provided on the top of one end of the traction plate extending to the inner side of the processing groove, the second guide rod is movably guided and connected to a slide block, and the trimming seat is fixed on the top of the slide block; There are multiple positioning rollers located on the same side of the tool holder, and the positioning rollers are vertically arranged.

[0009] Preferably, an adjustment assembly is provided between the tool holder and the trimming seat, and the adjustment assembly includes an adjustment frame fixedly arranged on the top of the trimming seat, and an adjustment screw is rotatably connected to the adjustment frame, and one end of the tool holder is threadedly engaged with the adjustment screw, so that the rotation of the adjustment screw can drive the tool holder to move, and the displacement direction of the tool holder is perpendicular to the displacement direction of the rack.

[0010] Preferably, a side of the upper end of the traction plate away from the trimming seat is provided with an avoidance groove corresponding to an adjacent traction plate.

[0011] Preferably, there are two positioning platforms, a gap is provided between the two positioning platforms, and one end of the top of the positioning platform is provided as a slope.

[0012] Preferably, a loading and unloading mechanism for loading and unloading plastic workpieces is provided at the upper end of the frame, and the loading and unloading mechanism includes a storage cylinder fixedly arranged on one side of the top plate and used for stacking and storing plastic workpieces, the slope of the top of the positioning platform is close to the storage cylinder, and two opposite ends of the top of the frame are respectively provided with channels for the plastic workpieces to pass through, and the bottom of the inner side of the channel is flush with the bottom of the inner side of the processing groove, and one of the channels corresponds to the storage cylinder, and a first support platform with a top flush with the inner bottom of the channel is horizontally fixed on one side of the upper end of the frame close to the storage cylinder, and a loading platform is movably connected to the first support platform via a linear guide rail, and a material protruding from the top of the loading platform and used for pushing the plastic workpiece is provided at one end of the top of the loading platform away from the frame. The cam is provided with a first projection which is displaced, and one end of the loading platform close to the frame corresponds to and is adapted to the gap between the two positioning platforms, a second support platform is horizontally fixedly arranged on the side of the upper end of the frame away from the storage cylinder, and the top is flush with the bottom of the inner side of the channel, and the second support platform is movably connected with a unloading platform through a linear guide rail, and one end of the unloading platform close to the frame is provided with a second projection which protrudes from the top of the unloading platform and is used to push the plastic workpiece to be displaced, and the second projection corresponds to and is adapted to the gap between the two positioning platforms, one end of the unloading platform is connected away from the frame and both sides of the end of the loading platform away from the frame are movably connected with connecting rods, and the other ends of the connecting rods are movably connected to the side faces of the lifting frame, so that the loading platform and the unloading platform are displaced by the connecting rods when the lifting frame is raised or lowered.

[0013] Preferably, the top of the first boss is higher than the top of the positioning platform, and the top of the loading platform close to one end of the frame is lower than the lowest point of the slope on the positioning platform; The top of the second boss does not protrude from the top of the positioning platform.

[0014] Preferably, the top of the unloading platform is provided with a downward depression, and both ends of the inner side of the depression are rotatably connected with a rotating shaft, a carrier plate is fixedly provided on the rotating shaft, a spiral curved groove is provided on the rotating shaft close to the second boss, a first guide rod is fixedly provided on one end of the inner side of the depression close to the second boss, a moving block is movably connected to the guide on the first guide rod, a spring is sleeved on the moving block, and the spring is located between a side of the moving block close to the second boss and the inner wall of the depression, and a movable guide that cooperates with the curved groove is provided on the top of the moving block The cam is configured so that when the spring is in the initial state, the carrier plate is in a horizontal state, and at this time the top of the carrier plate is flush with the top of the unloading platform, a blocking block corresponding to the moving block is fixedly provided at one end of the top of the second support platform close to the frame, and a first straight groove corresponding to the blocking block is provided at the bottom of the unloading platform, the upper end of the blocking block passes through the first straight groove and extends to the recess on the unloading platform, and the blocking block is movably connected to the first straight groove, so that when the unloading platform moves away from the frame, the moving block conflicts with the blocking block and pushes the moving block to compress the spring.

[0015] Preferably, a third guide rod corresponding to the rack is fixedly provided on the inner side of the lower end of the frame, and the rack is movably guided and connected to the third guide rod.

[0016] Compared with the prior art, the present invention provides a trimming device for plastic product production, which has the following beneficial effects: The trimming equipment for the production of plastic products can simultaneously remove burrs and flash from all sides of the plastic workpiece through the trimming mechanism, and can center the plastic workpiece before trimming. The positioning component is convenient for accurately fixing the plastic workpiece to ensure the trimming accuracy. The structure is compact and the efficiency is improved. The adjustment component is convenient for adjusting the position of the trimming knife to ensure that the trimming knife corresponds accurately to the side wall of the plastic workpiece.

[0017] The trimming equipment for the production of plastic products is arranged in linkage with the positioning component through the loading and unloading mechanism. The loading can be carried out when the positioning component is separated from the plastic workpiece. The processed plastic workpiece can be removed for unloading before the positioning component presses the plastic workpiece, thereby reducing the amount of manual participation and improving the efficiency. The carrying plate arranged on the unloading table cooperates with the curved groove, the convex shaft, the blocking block and the spring to facilitate the unloading of the plastic workpiece removed from the processing groove, so that it is easy to collect and receive without manual removal, thereby increasing the convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of another perspective of the present invention; Figure 3 It is a schematic diagram of the structure of the present invention in a disassembled state; Figure 4It is a schematic diagram of the structure of the present invention highlighting the interior of the processing tank; Figure 5 It is a schematic diagram of the structure of the loading platform, unloading platform and connecting rod of the present invention in a disassembled state; Figure 6 It is a schematic diagram of the structure of the loading platform, unloading platform and positioning platform of the present invention in a coordinated state; Figure 7 The present invention Figure 6 Schematic diagram of the structure after the plastic workpiece is removed from the foundation; Figure 8 It is a schematic diagram of the structure of the carrier plate and the unloading platform of the present invention in a disassembled state; Fig. 9 is a schematic structural diagram of the top plate of the present invention from a bottom perspective; Fig.10 It is a schematic diagram of the structure inside the frame of the present invention; Fig.11 It is a schematic diagram of the structure of the trimming mechanism of the present invention when it is separated from the frame; Fig.12 It is a structural schematic diagram of the trimming mechanism of the present invention; Fig.13 It is a schematic diagram of the structure of the present invention when the rack and the gear are separated; Fig.14 It is a schematic diagram of the structure of the trimming seat and the traction plate of the present invention in a separated state; Fig.15 It is a schematic diagram of the structure of the adjustment frame, the positioning roller and the trimming seat of the present invention in a disassembled state; Fig.16 It is a structural schematic diagram of the tool holder of the present invention.

[0019] In the figure: 1, frame; 2, gantry; 3, top plate; 4, storage cylinder; 5, cylinder; 6, connecting rod; 7, traction plate; 8, loading platform; 9, first support platform; 10, unloading platform; 11, second support platform; 12, lifting frame; 13, processing groove; 14, plastic workpiece; 15, positioning platform; 16, carrier plate; 17, channel; 18, first boss; 19, pressing plate; 20, second boss; 21, rotating shaft; 22, curved groove; 23, moving block; 24 , spring; 25, cam; 26, first guide rod; 27, blocking block; 28, through slot; 29, first straight slot; 30, inclined slot; 31, second straight slot; 32, reducer; 33, rack; 34, gear; 35, avoidance slot; 36, trimming seat; 37, positioning roller; 38, bracket; 39, guide roller; 40, second guide rod; 41, slider; 42, third guide rod; 43, adjustment frame; 44, knife holder; 45, adjustment screw; 46, trimming knife. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] like Figure 1-Figure 4 , Figure 9-Figure 16 As shown, a trimming device for producing plastic products includes a frame 1 with a hollow interior and a plastic workpiece 14. A processing groove 13 is provided on the top of the frame 1, and a positioning platform 15 for supporting the plastic workpiece 14 is provided in the middle of the inner side of the processing groove 13. A trimming mechanism is provided on the frame 1, and the trimming mechanism includes a gear 34 rotatably connected to the middle of the inner side of the lower end of the frame 1. A reducer 32 for driving the gear 34 to rotate is provided at the inner bottom of the frame 1. Racks 33 of unequal heights are respectively meshed around the gear 34. A third guide rod 42 corresponding to the rack 33 is fixedly provided on the inner side of the lower end of the frame 1. The movable guide 33 is connected to the third guide rod 42, one end of the rack 33 is fixedly connected to a "U"-shaped traction plate 7, the end of the traction plate 7 away from the rack 33 extends to the outside of the frame 1, and the upper end of the traction plate 7 extends to the processing groove 13, and the ends of the four traction plates 7 extending to the inner side of the processing groove 13 correspond to the four sides of the positioning platform 15, and the traction plate 7 cooperates with the movable guide of the frame 1, and the top of the end of the traction plate 7 extending to the inner side of the processing groove 13 is provided with a trimming seat 36, and the side of the upper end of the traction plate 7 away from the trimming seat 36 is provided with an avoidance groove 35 corresponding to an adjacent traction plate 7, and the traction plate 7 extends to the processing groove 13. A second guide rod 40 is provided at the top of one end of the inner side of the working groove 13, and the second guide rod 40 is movably guided and connected to a slider 41. The trimming seat 36 is fixed to the top of the slider 41, and the movable direction of the trimming seat 36 is perpendicular to the movable direction of the rack 33. A tool holder 44 is provided at the top of the trimming seat 36, and trimming knives 46 are symmetrically provided on both sides of the end of the tool holder 44 close to the positioning platform 15. A bracket 38 is provided at the corresponding position of the top of the trimming seat 36 and the two sides of the tool holder 44. The side of the bracket 38 close to the positioning platform 15 is rotatably connected to a positioning roller 37. The number of positioning rollers 37 located on the same side of the tool holder 44 is multiple, and the positioning rollers 37 are arranged on the same side of the tool holder 44. It is vertically arranged, and a guide roller 39 is rotatably arranged on the top of the bracket 38. Second straight grooves 31 corresponding to the positioning roller 37 are respectively arranged around the bottom of the top plate 3, and the four second straight grooves 31 respectively correspond to the four sides of the positioning platform 15, and the length of the second straight groove 31 is not less than the length of the side of the plastic workpiece 14. An inclined groove 30 is arranged at one end of the first straight groove 29, and the guide roller 39 is used for movably guiding and connecting with the inclined groove 30 and the second straight groove 31, and is configured so that when the guide roller 39 is located in the second straight groove 31, the positioning rollers 37 on the four trimming seats 36 just position the plastic workpiece 14 on the positioning platform 15 in the center.

[0022] like Figure 1-Figure 3 , Figure 5 , Figure 8As shown, a positioning assembly for pressing the plastic workpiece 14 is provided at the upper end of the top plate 3, and the positioning assembly includes a gantry 2 fixedly arranged on the top of the top plate 3, a lifting frame 12 is arranged below the gantry 2, a cylinder 5 for driving the lifting frame 12 to move up and down is arranged on the top of the gantry 2, a clamping plate 19 corresponding to the positioning platform 15 is arranged at the bottom of the lifting frame 12, and a through groove 28 corresponding to the clamping plate 19 and the positioning platform 15 is arranged in the middle of the top plate 3, so that the clamping plate 19 can move downward through the through groove 28 to press the plastic workpiece 14 on the top of the positioning platform 15.

[0023] like Figure 15-16 As shown, an adjustment component is provided between the tool holder 44 and the trimming seat 36, and the adjustment component includes an adjustment frame 43 fixedly arranged on the top of the trimming seat 36, and an adjustment screw 45 is rotatably connected to the adjustment frame 43, and one end of the tool holder 44 is threadedly engaged with the adjustment screw 45, so that the rotation of the adjustment screw 45 can drive the tool holder 44 to move, and the displacement direction of the tool holder 44 is perpendicular to the displacement direction of the rack 33. The setting of the adjustment component facilitates the adjustment of the position of the trimming knife 46 to ensure that the trimming knife 46 corresponds accurately to the side wall of the plastic workpiece 14.

[0024] like Figure 1-Figure 8As shown, there are two positioning platforms 15, a gap is set between the two positioning platforms 15, and one end of the top of the positioning platform 15 is set as a slope. The upper end of the frame 1 is provided with a loading and unloading mechanism for loading and unloading the plastic workpiece 14, and the loading and unloading mechanism includes a storage cylinder 4 fixedly set on one side of the top plate 3 and used for stacking and storing the plastic workpiece 14. The slope of the top of the positioning platform 15 is close to the storage cylinder 4, and the two opposite ends of the top of the frame 1 are respectively provided with channels 17 for the plastic workpiece 14 to pass through, and the bottom of the inner side of the channel 17 is aligned with the bottom of the inner side of the processing groove 13. The top of the first support platform 9 is flush with the bottom of the inner side of the channel 17, and one of the channels 17 corresponds to the storage cylinder 4. A first support platform 9 is horizontally fixedly arranged on one side of the upper end of the frame 1 close to the storage cylinder 4, and a loading platform 8 is movably connected to the first support platform 9 through a linear guide rail. The top of the loading platform 8 is far away from the frame 1. A first boss 18 protruding from the top of the loading platform 8 and used to push the plastic workpiece 14 to move. The end of the loading platform 8 close to the frame 1 corresponds to and fits the gap between the two positioning platforms 15. The top of the first boss 18 is higher than the top of the positioning platform 15. The top of the material platform 8 near one end of the frame 1 is lower than the lowest point of the slope on the positioning platform 15. A second support platform 11 with a top flush with the bottom of the inner side of the channel 17 is fixedly arranged horizontally on one side of the upper end of the frame 1 away from the storage cylinder 4. The second support platform 11 is movably connected with the unloading platform 10 through a linear guide rail. The unloading platform 10 is provided with a second boss 20 protruding from the top of the unloading platform 10 and used to push the plastic workpiece 14 to move. The second boss 20 corresponds to and fits the gap between the two positioning platforms 15, and the top of the second boss 20 does not protrude from the positioning platform 15. The top of the carrier 15, the end of the unloading platform 10 away from the frame 1 and the two sides of the end of the loading platform 8 away from the frame 1 are movably connected with connecting rods 6, and the other ends of the connecting rods 6 are movably connected to the side of the lifting frame 12, so that when the lifting frame 12 is lifted or lowered, the loading platform 8 and the unloading platform 10 are driven to move by the connecting rods 6. The loading and unloading mechanisms are linked with the positioning components, and the positioning components can be separated from the plastic workpiece 14 for loading. Before the positioning components press the plastic workpiece 14, the processed plastic workpiece 14 can be moved away for unloading, which reduces the amount of manual participation and improves efficiency.

[0025] like Figure 4-Figure 8As shown, a downward depression is provided on the top of the unloading platform 10, and both ends of the inner side of the depression are rotatably connected with a rotating shaft 21, a carrier plate 16 is fixedly provided on the rotating shaft 21, a spiral curved groove 22 is provided on the rotating shaft 21 close to the second boss 20, a first guide rod 26 is fixedly provided at one end of the inner side of the depression close to the second boss 20, a moving block 23 is movably connected to the first guide rod 26, a spring 24 is sleeved on the moving block 23, and the spring 24 is located between a side of the moving block 23 close to the second boss 20 and the inner wall of the depression, a convex shaft 25 that cooperates with the movably guided curved groove 22 is provided on the top of the moving block 23, and it is configured that when the spring 24 is in the initial state, the carrier plate 16 is in a horizontal state, and at this time, the top of the carrier plate 16 is flush with the top of the unloading platform 10. A blocking block 27 corresponding to the moving block 23 is fixedly provided at one end of the top of the second support platform 11 near the frame 1, and a first straight groove 29 corresponding to the blocking block 27 is provided at the bottom of the unloading platform 10. The upper end of the blocking block 27 passes through the first straight groove 29 and extends to the recess on the unloading platform 10, and the blocking block 27 is movably connected with the first straight groove 29, so that when the unloading platform 10 moves away from the frame 1, the moving block 23 and the blocking block 27 collide and push the moving block 23 to compress the spring 24. The carrier plate 16 set on the unloading platform 10 cooperates with the curved groove 22, the convex shaft 25, the blocking block 27, and the spring 24 to facilitate the discharge of the plastic workpiece 14 removed from the processing groove 13, which is convenient for collection and reception without manual removal, thereby increasing convenience.

[0026] Working principle: when in use, the plastic workpieces 14 are stacked and stored in the storage tube 4, and the bottom plastic workpiece 14 falls to the top of the loading platform 8. When the cylinder 5 drives the lifting frame 12 to move upward, it will drive the loading platform 8 and the unloading platform 10 to move closer through the connecting rod 6. The loading platform 8 pushes the plastic workpiece 14 in the direction of the positioning platform 15 through the first boss 18 on the top, and then the end of the loading platform 8 enters the gap between the two positioning platforms 15. The first boss 18 continues to push the plastic workpiece 14. The plastic workpiece 14 gradually moves from the slope at the top of the positioning platform 15 to the top of the positioning platform 15, and the second boss 20 at one end of the unloading platform 10 also gradually enters the gap between the two positioning platforms 15. The plastic workpiece 14 being pushed onto the top of the positioning platform 15 can be processed in front The good plastic workpiece 14 is pushed down and falls onto the carrier plate 16 at the top of the unloading platform 10. When the plastic workpiece 14 is completely pushed to the top of the positioning platform 15, the cylinder 5 starts to drive the lifting frame 12 to move downward. Since the top of the loading platform 8 is lower than the top of the positioning platform 15, when the connecting rod 6 drives the loading platform 8 and the unloading platform 10 to move away from each other, the plastic workpiece 14 on the positioning platform 15 will not move with the loading platform 8. The second boss 20 on the unloading platform 10 takes the plastic workpiece 14 away. When the loading platform 8 and the unloading platform 10 are removed from the processing groove 13, the cylinder 5 stops driving the lifting frame 12 to move downward. At this time, there is a gap between the clamping plate 19 and the plastic workpiece 14. Then the reducer 32 is controlled to drive the gear 34 to rotate, and the gear 34 drives the four racks 33 to move synchronously. The strip 33 drives the trimming seat 36 to move through the traction plate 7. Initially, the guide roller 39 is located at the end of the inclined groove 30 away from the second straight groove 31. Therefore, while the traction plate 7 drives the trimming seat 36 to move, the trimming seat 36 will also move toward the direction of the positioning platform 15 under the action of the guide roller 39 and the inclined groove 30, so that the positioning roller 37 on one side of the tool holder 44 can center the plastic workpiece 14. When the guide roller 39 moves from the inclined groove 30 to the second straight groove 31, the centering is completed. At this time, the trimming knife 46 is located at the side corner of the plastic workpiece 14, and then the reducer 32 stops. After centering, the control cylinder 5 continues to drive the lifting frame 12 to move downward, and the pressing plate 19 presses the top of the plastic workpiece 14. After pressing, the reducer 32 drives the gear 34 to rotate again, thereby trimming. The knife 46 cuts off the burrs and flashes on the side of the plastic workpiece 14. After the cutting, the reducer 32 reverses, the rack 33 moves back and resets, and the trimming knife 46 on the other side trims the side of the plastic workpiece 14 again until the positioning roller 37 is separated from the plastic workpiece 14, and the guide roller 39 moves to the end of the inclined groove 30 away from the second straight groove 31. In addition, when the unloading platform 10 moves outward, it will drive the moving block 23 to contact the blocking block 27, and the moving block 23 continues to move and drives the cam 25 to move and compress the spring 24, so that the cam 25 drives the rotating shaft 21 to rotate through the curved groove 22, and the rotating shaft 21 drives the carrier plate 16 to rotate and tilt, so that the plastic workpiece 14 can slide down, and when the unloading platform 10 and the loading platform 8 move close to each other again, the spring 24 resets.The carrier plate 16 is horizontal, and the cycle continues.

[0027] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A trimming device for producing plastic products, comprising a frame (1) with a hollow interior and a plastic workpiece (14), wherein a processing groove (13) is provided on the top of the frame (1), and a positioning platform (15) for supporting the plastic workpiece (14) is provided in the middle of the inner side of the processing groove (13), characterized in that: The frame (1) is provided with a trimming mechanism, the trimming mechanism comprising a gear (34) rotatably connected to the middle of the inner side of the lower end of the frame (1), a reducer (32) for driving the gear (34) to rotate is provided at the inner bottom of the frame (1), the gear (34) is meshed with racks (33) arranged at different heights on all sides, one end of the rack (33) is fixedly connected to a "U"-shaped traction plate (7), the traction plate (7) extends to the outer side of the frame (1) from one end of the rack (33), and the traction plate (7) is arranged to be closer to the outer side of the frame (1). The upper end of the guide plate (7) extends to the processing groove (13), and the ends of the four traction plates (7) extending to the inner side of the processing groove (13) correspond to the four sides of the positioning platform (15), and the traction plates (7) are movably guided and matched with the frame (1). A trimming seat (36) is movably provided on the top of the end of the traction plate (7) extending to the inner side of the processing groove (13), and the movement direction of the trimming seat (36) is perpendicular to the movement direction of the rack (33). A tool holder (44) is provided on the top of the trimming seat (36). The tool holder (44) 4) trimming knives (46) are symmetrically arranged on both sides of one end close to the positioning platform (15), brackets (38) are arranged at the top of the trimming seat (36) and at the corresponding positions on both sides of the knife holder (44), a positioning roller (37) is rotatably connected to the bracket (38) on one side close to the positioning platform (15), a guide roller (39) is rotatably arranged on the top of the bracket (38), and second straight grooves (31) corresponding to the positioning roller (37) are respectively arranged around the bottom of the top plate (3), and the four second straight grooves (31) are respectively The second straight groove (31) corresponds to the four sides of the positioning platform (15), and the length of the second straight groove (31) is not less than the length of the side of the plastic workpiece (14). An inclined groove (30) is provided at one end of the first straight groove (29), and the guide roller (39) is used for movable guiding connection with the inclined groove (30) and the second straight groove (31), and is configured so that when the guide roller (39) is located in the second straight groove (31), the positioning rollers (37) on the four trimming seats (36) just position the plastic workpiece (14) on the positioning platform (15) in the center.

2. The trimming equipment for plastic product production according to claim 1, characterized in that: A positioning assembly for pressing the plastic workpiece (14) is arranged at the upper end of the top plate (3), the positioning assembly comprising a gantry (2) fixedly arranged on the top of the top plate (3), a lifting frame (12) arranged below the gantry (2), a cylinder (5) for driving the lifting frame (12) to move up and down is arranged at the top of the gantry (2), a pressing plate (19) corresponding to the positioning platform (15) is arranged at the bottom of the lifting frame (12), and a through groove (28) corresponding to the pressing plate (19) and the positioning platform (15) is arranged in the middle of the top plate (3), so that the pressing plate (19) can move downward through the through groove (28) to press the plastic workpiece (14) on the top of the positioning platform (15).

3. The trimming equipment for plastic product production according to claim 1, characterized in that: A second guide rod (40) is provided at the top of one end of the traction plate (7) extending to the inner side of the processing groove (13); the second guide rod (40) is movably guided and connected to a slider (41); and the trimming seat (36) is fixed to the top of the slider (41); There are multiple positioning rollers (37) located on the same side of the tool holder (44), and the positioning rollers (37) are arranged vertically.

4. The trimming device for plastic product production according to claim 1, characterized in that: An adjustment assembly is provided between the tool holder (44) and the trimming seat (36), the adjustment assembly comprising an adjustment frame (43) fixedly arranged on the top of the trimming seat (36), an adjustment screw (45) being rotatably connected to the adjustment frame (43), one end of the tool holder (44) being threadably engaged with the adjustment screw (45), so that the rotation of the adjustment screw (45) can drive the tool holder (44) to move, and the displacement direction of the tool holder (44) is perpendicular to the displacement direction of the rack (33).

5. The trimming equipment for plastic product production according to claim 1, characterized in that: A side of the upper end of the traction plate (7) away from the trimming seat (36) is provided with an avoidance groove (35) corresponding to an adjacent traction plate (7).

6. The trimming equipment for plastic product production according to claim 1, characterized in that: The number of the positioning platforms (15) is two, a gap is provided between the two positioning platforms (15), and one end of the top of the positioning platform (15) is provided as a slope.

7. The edge trimming device for plastic product production according to claim 6, characterized in that: The upper end of the frame (1) is provided with a loading and unloading mechanism for loading and unloading plastic workpieces (14), the loading and unloading mechanism comprising a storage cylinder (4) fixedly arranged on one side of the top plate (3) and used for stacking and storing the plastic workpieces (14), the slope of the top of the positioning platform (15) is close to the storage cylinder (4), and two opposite ends of the top of the frame (1) are respectively provided with channels (17) for the plastic workpieces (14) to pass through, and the bottom of the inner side of the channel (17) is aligned with the inner side of the processing groove (13). The bottom of the side of the frame (1) is flush with that of the side, and one of the channels (17) corresponds to the storage cylinder (4); a first support platform (9) whose top is flush with the bottom of the inner side of the channel (17) is fixedly arranged horizontally on one side of the upper end of the frame (1) close to the storage cylinder (4); a loading platform (8) is movably connected to the first support platform (9) via a linear guide rail; a first boss (18) protruding from the top of the loading platform (8) and used for pushing the plastic workpiece (14) to move is arranged at one end of the top of the loading platform (8) away from the frame (1). , and the end of the loading platform (8) close to the frame (1) corresponds to and fits the gap between the two positioning platforms (15); a second support platform (11) whose top is flush with the bottom of the inner side of the channel (17) is fixedly arranged horizontally on the side of the upper end of the frame (1) away from the storage cylinder (4); a discharge platform (10) is movably connected to the second support platform (11) via a linear guide rail; and a material is protruding from the top of the discharge platform (10) and used to push the plastic The second boss (20) is provided for the displacement of the workpiece (14), and the second boss (20) corresponds to and fits the gap between the two positioning platforms (15), and the end of the unloading platform (10) away from the frame (1) is connected and the end of the loading platform (8) away from the frame (1) is movably connected with connecting rods (6) on both sides, and the other ends of the connecting rods (6) are movably connected to the side of the lifting frame (12), so that when the lifting frame (12) is lifted or lowered, the loading platform (8) and the unloading platform (10) are driven to move through the connecting rods (6).

8. The trimming device for plastic product production according to claim 7, characterized in that: The top of the first boss (18) is higher than the top of the positioning platform (15), and the top of the loading platform (8) close to one end of the frame (1) is lower than the lowest point of the slope on the positioning platform (15); The top of the second boss (20) does not protrude from the top of the positioning platform (15).

9. The edge trimming device for plastic product production according to claim 8, characterized in that: The top of the unloading platform (10) is provided with a downward depression, and both ends of the inner side of the depression are rotatably connected with a rotating shaft (21), a carrier plate (16) is fixedly provided on the rotating shaft (21), a spiral curved groove (22) is provided on the rotating shaft (21) close to the second boss (20), a first guide rod (26) is fixedly provided at one end of the inner side of the depression close to the second boss (20), a movable guide on the first guide rod (26) is connected with a moving block (23), a spring (24) is sleeved on the moving block (23), and the spring (24) is located between a side of the moving block (23) close to the second boss (20) and the inner wall of the depression, a convex shaft (25) is provided on the top of the moving block (23) and is matched with the movable guide of the curved groove (22), and is configured When the spring (24) is in the initial state, the carrier plate (16) is in a horizontal state, and at this time the top of the carrier plate (16) is flush with the top of the unloading platform (10). A blocking block (27) corresponding to the moving block (23) is fixedly provided at one end of the top of the second support platform (11) close to the frame (1), and a first straight groove (29) corresponding to the blocking block (27) is provided at the bottom of the unloading platform (10). The upper end of the blocking block (27) passes through the first straight groove (29) and extends to a recess on the unloading platform (10), and the blocking block (27) is movably connected to the first straight groove (29), so that when the unloading platform (10) moves in a direction away from the frame (1), the moving block (23) and the blocking block (27) come into contact and push the moving block (23) to compress the spring (24).

10. The edge trimming device for plastic product production according to claim 8, characterized in that: A third guide rod (42) corresponding to the rack (33) is fixedly arranged on the inner side of the lower end of the frame (1), and the rack (33) is movably guided and connected to the third guide rod (42).

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