Plastic lunch box trimming device and method

Abstract

The present invention relates to the field of plastic lunch boxes, and in particular to a plastic lunch box trimming device and method. In the prior art, when punching a plastic lunch box, the punching process is complicated and demoulding is difficult. After punching, the lunch box still needs to be manually trimmed and cleaned, which reduces production efficiency. It includes a lunch box punching mechanism, a conveyor belt is arranged below the lunch box punching mechanism, a lunch box conveying mechanism is arranged on one side of the lunch box punching mechanism, a material receiving platform is arranged on the side of the lunch box punching mechanism away from the lunch box conveying mechanism, a lunch box blister mechanism is arranged on the side of the lunch box conveying mechanism away from the lunch box punching mechanism, and a feeding reel is arranged on the side of the lunch box blister mechanism away from the lunch box conveying mechanism. The lifting mechanism can lift and release the punched lunch box. When the lifting mechanism lifts the lunch box, the cleaning of the lunch box is completed by blowing air through the blowing hole, and the adsorption of impurities and chips around the lunch box is completed by suction through the suction hole, thereby reducing manual work and improving work efficiency.

Description

Technical Field

[0001] The invention relates to the field of plastic lunch boxes, and in particular to a plastic lunch box edge trimming device and a method thereof. Background Art

[0002] With the acceleration of urbanization, most people have begun to order food through websites or applications, driving the rapid development of the takeout industry. As a result, the demand for plastic lunch boxes has skyrocketed. Plastic lunch boxes are cheap, convenient and fast to use, and have become an important part of people's lives.

[0003] At present, there are many types of lunch boxes, and the shapes of lunch boxes are also various, such as rectangular, round, etc., and the layout of lunch boxes is also different. There are many steps in the molding and processing of plastic lunch boxes, such as molding, punching, etc., which need to be carried out step by step to finally make a plastic lunch box. However, in the prior art, when punching plastic lunch boxes, the punching process is complicated and demoulding is difficult. After punching, the lunch box still needs to be manually trimmed and cleaned, which reduces production efficiency.

[0004] In view of the problems in the above background technology, the present invention aims to provide a plastic lunch box edge trimming device and method. Summary of the invention

[0005] In order to overcome the shortcomings that the punching process is complicated and demoulding is difficult, and the lunch box still needs to be manually trimmed and cleaned after punching, which reduces the production efficiency, the technical problem to be solved by the present invention is to provide a plastic lunch box trimming device and method.

[0006] In order to solve the above technical problems, the present invention provides such a plastic lunch box trimming device and method, including a lunch box punching mechanism, a conveyor belt is arranged below the lunch box punching mechanism, a lunch box conveying mechanism is arranged on one side of the lunch box punching mechanism, a material receiving platform is arranged on the side of the lunch box punching mechanism away from the lunch box conveying mechanism, a lunch box blister mechanism is arranged on the side of the lunch box conveying mechanism away from the lunch box punching mechanism, a feeding reel is arranged on the side of the lunch box blister mechanism away from the lunch box conveying mechanism, and the inside of the lunch box punching mechanism A lunch box punching mold is provided, and the lunch box punching mechanism includes a bottom plate bracket, on which an upper template of a punching machine and a lower template of the punching machine are slidably connected, and opposite surfaces of the upper template of the punching machine and the lower template of the punching machine are provided with a clamp slide groove, in which a fixing clamp is slidably connected, and the fixing clamp is threadedly connected with a fixing bolt, and the fixing clamp fixes the lunch box punching mold to the lower surface of the upper template of the punching machine and the upper surface of the lower template of the punching machine through the fixing bolt, and guide shafts are fixedly connected on both sides of the upper template of the punching machine.

[0007] Preferably, the lunch box punching mold includes an upper punching mold template, a trigger block is connected to the side of the upper punching mold template by screws, an inclined surface is provided at the end of the trigger block away from the upper punching mold template, four positioning columns are fixedly connected to the upper punching mold template, the other ends of the four positioning columns are slidably connected to the lower punching mold template, an upper punching mold core is fixedly connected to the lower part of the upper punching mold template, and a lower punching mold core is fixedly connected to the upper part of the lower punching mold template.

[0008] Preferably, a lifting mechanism is symmetrically arranged on the lower template of the punching die, a rib-shaped groove is fixedly connected to the upper surface of the lower template of the punching die, a pushing block is slidably connected in the rib-shaped groove, and an inclined groove matching the inclined surface of the trigger block is provided at one end of the pushing block away from the lower template of the punching die.

[0009] Preferably, three mold feet are fixed on the lower surface of the lower template of the punching mold, and sliding grooves are opened inside the mold feet. Sliding blocks are slidably connected inside the sliding grooves of the mold feet on both sides, and a sliding shaft is rotatably connected between two left-right symmetrical sliding blocks. A reset spring is fixedly connected between every two sliding blocks, and a fixed block is fixedly connected to the other side of the sliding block away from the sliding shaft. The fixed blocks on both sides are cross-arranged, and a connecting rod is riveted to the side of the fixed block away from the sliding block, a pushing shaft is riveted to the middle of the connecting rod, and the upper end of the pushing shaft is fixedly connected to the pushing block.

[0010] Preferably, the upper die core of the punching die is provided with four active punching grooves, and a punching body is slidably connected in the active punching grooves.

[0011] Preferably, a plurality of countersunk holes are provided on the upper surface of the upper template of the punching die, and a rivet is slidably connected in the countersunk hole. The other end of the rivet is threadedly connected to the punching body. A positioning pin is fixedly connected to the lower surface of the upper template of the punching die, and the other end of the positioning pin is slidably connected to the punching body. A positioning spring is provided on the outer sleeve of the positioning pin.

[0012] Preferably, the upper die plate of the punching die is provided with a blowing hole, which is composed of through holes opened on the upper die plate of the punching die and the punching body. The lower die core of the punching die is provided with an air suction hole, which is composed of through holes opened on the lower die core of the punching die.

[0013] Preferably, the top end of the base plate bracket is fixedly connected to the upper plate of the punching machine, and a reciprocating punching mechanism is arranged on the upper surface of the upper plate of the punching machine. The reciprocating punching mechanism includes a driving motor, and a driving gear is fixedly connected to the output shaft of the driving motor. A driven gear is arranged above the driving gear, and the driving gear is meshingly connected to the driven gear. A crankshaft is fixedly connected to the driven gear, and a reciprocating arm is rotatably connected to the crankshaft. The end of the reciprocating arm away from the crankshaft is rotatably connected to a fixed support via a rotating shaft, and the fixed support is fixedly connected to the upper surface of the upper template of the punching machine.

[0014] Preferably, a hydraulic cylinder is provided on the upper surface of the base plate support, and an output end of the hydraulic cylinder is fixedly connected to the lower surface of the lower template of the punching machine.

[0015] A method for trimming a plastic lunch box comprises the following steps:

[0016] S1. When the equipment is used, the raw materials are placed on the feed reel, which is then transported to the lunch box blister mechanism. The raw materials are blister-formed into lunch boxes in the lunch box blister mechanism. The lunch boxes formed in the blister mechanism are transported to the lunch box punching mechanism under the drive of the lunch box conveying mechanism.

[0017] S2. Driven by the output shaft of the driving motor, the driving gear starts to rotate, the crankshaft drives the reciprocating arm to reciprocate, and the reciprocating arm drives the upper template of the punching machine to move up and down under the action of the rotating shaft to complete the punching action;

[0018] S3. When the lunch box needs to be punched, the upper template of the punching die moves downward, driving the punching body to move downward. The punching body stops moving after it presses against the plastic lunch box. The punching body compresses the positioning spring upward, and the punching body drives the rivet to move upward. After the rivet presses against the lower surface of the upper template of the punching machine, it stops moving. The upper template of the punching machine drives the upper template of the punching die to continue to move downward. Under the action of the upper template of the punching machine, the punching body cuts the lunch box downward, and the positioning spring releases the pressure to push the punching body downward. The punching body moves downward to push the lunch box downward, completing the punching demoulding;

[0019] S4. When the lunch box formed in the blister mechanism is transported to the lunch box punching mechanism, the upper template of the punching die moves downward to drive the trigger block to move downward, the inclined surface at the end of the trigger block cooperates with the inclined groove of the push block, and the push block slides inside the shaped groove, and the push block drives the push shaft to slide in the same direction, and the push shaft drives the connecting rod to slide in the same direction, and the connecting rod drives the fixed block to slide in the same direction, and the fixed block drives the sliding block to slide in the same direction, and the sliding block drives the sliding shaft to move in the same direction, and the two sliding blocks compress the reset spring inward, and the sliding shaft moves inward, and the sliding shaft completes the lifting of the lunch box;

[0020] S5. After the lunch box falls, it is lifted by the lifting mechanism, and the external air pump blows air into the blowing hole, and then blows out from the air holes on the punching body to clean the lunch box. The external vacuum pump sucks air from the suction hole, and the impurities and chips around the lunch box are adsorbed through the air holes opened on the lower mold core of the punching mold;

[0021] S6. When the upper template of the punching die moves upward, the upward movement of the upper template of the punching die drives the trigger block to move upward, and the inclined surface at the end of the trigger block disengages from the inclined groove at the end of the push block, and the sliding block is pushed to move to both sides under the action of the release tension of the reset spring, and the sliding block drives the sliding shaft to move in the same direction, and the sliding block drives the fixed block to slide in the same direction, and the fixed block drives the connecting rod to slide in the same direction, and the connecting rod drives the push shaft to slide in the same direction, and the push shaft drives the push block to slide in the same direction, and the sliding shaft moves to both sides, and the sliding shaft releases the support for the lunch box, and the lunch box falls on the conveyor belt.

[0022] 1. Compared with the prior art, the lifting mechanism can lift and release the lunch boxes that have been punched and cut. When the lifting mechanism lifts the lunch boxes, the air is blown through the blowing holes to clean the lunch boxes, and the air is sucked through the suction holes to absorb impurities and chips around the lunch boxes, which reduces manual work and improves work efficiency.

[0023] 2. The present invention overcomes the problems of complicated punching process and difficult demoulding. Through the cooperation between the punching body, the rivet and the positioning spring, the punching steps are optimized, the demoulding effect is increased, the production efficiency is improved, and the equipment utilization rate is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the lunch box punching mechanism of the present invention;

[0026] Figure 3 It is a schematic diagram of the lunch box punching mold of the present invention;

[0027] Figure 4 It is a schematic diagram of the lifting mechanism of the present invention;

[0028] Figure 5 This is a schematic diagram of the upper die of the lunch box punching die of the present invention;

[0029] Figure 6 It is a schematic diagram of the reciprocating punching mechanism of the present invention.

[0030] The reference numerals in the figure are: 1 - feeding reel, 2 - lunch box thermoforming mechanism, 3 - lunch box conveying mechanism, 4 - lunch box punching mechanism, 401 - upper top plate of punching machine, 402 - reciprocating punching mechanism, 4021 - driving motor, 4022 - driving gear, 4023 - driven gear, 4024 - crankshaft, 4025 - reciprocating arm, 4026 - fixed support, 4027 - rotating shaft, 403 - upper template of punching machine, 404 - lower template of punching machine, 405 - bottom plate support, 406 - guiding shaft, 407 - hydraulic cylinder, 408 - fixed fixture, 409 - fixture sliding groove, 5 - conveyor belt, 6 - material receiving platform, 7 - lunch box punching die, 701 - upper template of punching die, 702 - air blowing hole, 703 - upper die core of punching die, 704 - lower die core of punching die, 705 - trigger block, 706 - lifting mechanism, 7061 - pushing block, 7062 - pushing shaft, 7063 - connecting rod, 7064 - fixed block, 7065 - sliding block, 7066 - return spring, 7067 - sliding shaft, 7068 - sliding groove, 7069 - U-shaped groove, 707 - air suction hole, 708 - positioning column, 709 - lower template of punching die, 710 - die foot, 711 - punching movable groove, 712 - punching body, 713 - pull nail, 714 - positioning pin, 715 - positioning spring. Detailed implementation mode

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] Embodiment 1: A plastic lunch box trimming device, as Figure 1 、 Figure 2 shown, includes a lunch box punching mechanism 4. A conveyor belt 5 is arranged below the lunch box punching mechanism 4. A lunch box conveying mechanism 3 is arranged on one side of the lunch box punching mechanism 4. A material receiving platform 6 is arranged on the side of the lunch box punching mechanism 4 away from the lunch box conveying mechanism 3. A lunch box thermoforming mechanism 2 is arranged on the side of the lunch box conveying mechanism 3 away from the lunch box punching mechanism 4. A feeding reel 1 is arranged on the side of the lunch box thermoforming mechanism 2 away from the lunch box conveying mechanism 3. A lunch box punching die 7 is arranged inside the lunch box punching mechanism 4.

[0033] When the device is in use, the raw material is placed on the feeding reel 1 and conveyed to the lunch box thermoforming mechanism 2 by the feeding reel 1. The raw material is thermoformed into a lunch box in the lunch box thermoforming mechanism. The formed lunch box in the thermoforming mechanism is conveyed to the lunch box punching mechanism 4 by the lunch box conveying mechanism 3. After the lunch box punching mechanism 4 punches the lunch box, the lunch box falls onto the conveyor belt 5, and the remaining waste is conveyed to the material receiving platform 6.

[0034] As Figure 3-Figure 5As shown, the lunch box punching mold 7 includes an upper punching mold template 701, and a trigger block 705 is connected to the side of the upper punching mold template 701 by screws. The end of the trigger block 705 away from the upper punching mold template 701 is provided with an inclined surface, and four positioning columns 708 are fixedly connected to the upper punching mold template 701, and the other ends of the four positioning columns 708 are slidably connected to the lower punching mold template 709, and the upper punching mold core 703 is fixedly connected to the lower part of the upper punching mold template 701, and the lower punching mold core 704 is fixedly connected to the upper part of the lower punching mold template 709.

[0035] A lifting mechanism 706 is symmetrically arranged on the lower template 709 of the punching die. A rib-shaped groove 7069 is fixedly connected to the upper surface of the lower template 709 of the punching die. A pushing block 7061 is slidably connected in the rib-shaped groove 7069. The end of the pushing block 7061 away from the lower template 709 of the punching die is provided with an inclined groove that matches the inclined surface of the trigger block 705.

[0036] Three die feet 710 are fixed on the lower surface of the lower template 709 of the punching die, and a sliding groove 7068 is opened inside the die feet 710. Sliding blocks 7065 are slidably connected inside the sliding grooves 7068 of the die feet 710 on both sides, and a sliding shaft 7067 is rotatably connected between the two left-right symmetrical sliding blocks 7065. A return spring 7066 is fixedly connected between every two sliding blocks 7065 on the left and right sides of the same sliding groove 7068. A fixed block 7064 is fixedly connected to the other side of the sliding block 7065 away from the sliding shaft 7067. The fixed blocks 7064 on both sides are cross-arranged. There are four sliding shafts 7067 in total from left to right inside the sliding groove 7068. The two ends of each sliding shaft 7067 Both are rotatably connected with sliding blocks 7065, and the sides of the first sliding block 7065 from the right and the third sliding block 7065 located in the sliding groove 7068 of the outer mold foot 710 are fixedly connected with fixed blocks 7064, and the sides of the two fixed blocks 7064 away from the sliding blocks 7065 are riveted with connecting rods 7063, and the sides of the first sliding block 7065 from the left and the third sliding block 7065 located in the sliding groove 7068 of the inner mold foot 710 are also fixedly connected with fixed blocks 7064, and the sides of the two fixed blocks 7064 away from the sliding blocks 7065 are also riveted with connecting rods 7063, a pushing shaft 7062 is riveted to the middle of the connecting rod 7063, and the upper end of the pushing shaft 7062 is fixedly connected to the pushing block 7061.

[0037] When the lunch box formed in the blister mechanism is transported to the lunch box punching mechanism 4, the upper template 701 of the punching mold moves downward to drive the trigger block 705 to move downward, and the inclined surface at the end of the trigger block 705 cooperates with the inclined groove of the push block 7061 to push the push block 7061 to slide inside the shaped groove 7069, and the push block 7061 drives the push shaft 7062 to slide in the same direction, and the push shaft 7062 drives the connecting rod 7063 to slide in the same direction, and the connecting rod 7063 drives the fixed block 7064 to slide in the same direction, and the fixed block 7064 drives the sliding block 7065 to slide in the same direction, and the sliding block 7065 drives the sliding shaft 7067 to move in the same direction, and the two sliding blocks 7065 compress the reset spring 7066 inward, and the sliding shaft 7067 moves inward, and the sliding shaft 7067 completes the lifting of the lunch box. When the upper template 701 of the punching die moves upward, the upper template 701 of the punching die moves upward, driving the trigger block 705 to move upward, and the inclined surface at the end of the trigger block 705 disengages from the inclined groove at the end of the pushing block 7061. Under the action of the release tension of the reset spring 7066, the sliding block 7065 is pushed to move to both sides, and the sliding block 7065 drives the sliding shaft 7067 to move in the same direction, and the sliding block 7065 drives the fixed block 7064 to slide in the same direction, and the fixed block 7064 drives the connecting rod 7063 to slide in the same direction, and the connecting rod 7063 drives the pushing shaft 7062 to slide in the same direction, and the pushing shaft 7062 drives the pushing block 7061 to slide in the same direction, and the sliding shaft 7067 moves to both sides, and the sliding shaft 7067 releases the support for the lunch box, and the lunch box falls on the conveyor belt 5.

[0038] like Figure 6 As shown, the punching die upper mold core 703 is provided with four punching movable grooves 711, and the punching movable grooves 711 are slidably connected to the punching body 712. The upper surface of the punching die upper template 701 is provided with a plurality of countersunk holes, and a rivet 713 is slidably connected in the countersunk holes, and the other end of the rivet 713 is threadedly connected to the punching body 712. The lower surface of the punching die upper template 701 is fixedly connected with a positioning pin 714, and the other end of the positioning pin 714 is slidably connected to the punching body 712, and a positioning spring 715 is provided on the outer sleeve of the positioning pin 714.

[0039] When the lunch box needs to be punched, the upper template 701 of the punching die moves downward, driving the punching body 712 to move downward. The punching body 712 stops moving after it presses against the plastic lunch box. The punching body 712 compresses the positioning spring 715 upward. The punching body 712 drives the rivet 713 to move upward. After the rivet 713 presses against the lower surface of the punching machine upper template 403, it stops moving. The punching machine upper template 403 drives the upper template 701 of the punching die to continue moving downward. Under the action of the punching machine upper template 403, the punching body 712 cuts the lunch box downward, and the positioning spring 715 releases the pressure to push the punching body 712 downward. The punching body 712 moves downward to push the lunch box downward, completing the punching and demoulding.

[0040] The punching die upper template 701 is provided with a blow hole 702, which is composed of through holes opened on the punching die upper template 701 and the punching body 712. The punching die lower mold core 704 is provided with an air suction hole 707, which is composed of a through hole opened on the punching die lower mold core 704.

[0041] When it is necessary to clean the impurities in the lunch box, the lunch box is lifted up by the lifting mechanism 706 after it falls, and an external air pump blows air into the blowing hole 702, and then blows it out from the air holes on the punching body 712 to clean the lunch box. An external vacuum pump sucks air into the suction hole 707, and the impurities and chips around the lunch box are adsorbed through the air holes opened on the lower mold core 704 of the punching mold.

[0042] like Figure 2 , Figure 6 As shown, the lunch box punching mechanism 4 includes a bottom plate bracket 405, on which the upper template 403 of the punching machine and the lower template 404 of the punching machine are slidably connected, and the upper template 403 of the punching machine and the lower template 404 of the punching machine are provided with a fixture slide groove 409 on the opposite sides, and a fixing fixture 408 is slidably connected in the fixture slide groove 409, and fixing bolts and threaded holes are provided at both ends of the fixing fixture 408. The fixing fixture 408 fixes the lunch box punching mold 7 to the lower surface of the upper template 403 of the punching machine and the upper surface of the lower template 404 of the punching machine through the fixing bolts. By setting the fixture slide groove 409 and the fixing fixture 408, the mold replacement and fixation can be quickly completed. The upper template 403 of the punching machine is fixedly connected with guide shafts 406 on both sides, and the guide shafts 406 can be provided to guide and position the raw materials.

[0043] The top of the bottom plate bracket 405 is fixedly connected to the upper plate 401 of the punching machine, and the upper surface of the upper plate 401 of the punching machine is provided with a reciprocating punching mechanism 402, and the reciprocating punching mechanism 402 includes a driving motor 4021, and a driving gear 4022 is fixedly connected to the output shaft of the driving motor 4021, and a driven gear 4023 is provided above the driving gear 4022, and the driving gear 4022 is meshed and connected with the driven gear 4023, and a crankshaft 4024 is fixedly connected to the driven gear 4023, and a reciprocating arm 4025 is rotatably connected to the crankshaft 4024, and the end of the reciprocating arm 4025 away from the crankshaft 4024 is rotatably connected to the fixed support 4026 through a rotating shaft 4027, and the fixed support 4026 is fixedly connected to the upper surface of the punching machine upper template 403.

[0044] When the lunch box needs to be punched, the driving gear 4022 starts to rotate under the drive of the output shaft of the driving motor 4021, and the driving gear 4022 and the driven gear 4023 are meshed and connected, and the driven gear 4023 starts to rotate in the opposite direction, and the driven gear 4023 drives the crankshaft 4024 to rotate in the opposite direction, and the crankshaft 4024 drives the reciprocating arm 4025 to reciprocate, and the reciprocating arm 4025 drives the upper template 403 of the punching machine to move up and down under the action of the rotating shaft 4027 to complete the punching action.

[0045] A hydraulic cylinder 407 is disposed on the upper surface of the bottom plate support 405 , and an output end of the hydraulic cylinder 407 is fixedly connected to the lower surface of the lower template 404 of the punching and shearing machine.

[0046] When the lunch box needs to be punched, the output end of the hydraulic cylinder 407 drives the lower template 404 of the punching machine to move up and down to complete the punching of the lunch box.

[0047] Embodiment 2: A method for a plastic lunch box trimming device, comprising the following steps:

[0048] S1. When the device is used, the raw materials are placed on the feed reel 1, which is transported to the lunch box blister mechanism 2, where the raw materials are blister-molded into lunch boxes, and the lunch boxes formed in the blister mechanism are transported to the lunch box punching mechanism 4 under the drive of the lunch box conveying mechanism 3;

[0049] S2. Driven by the output shaft of the driving motor 4021, the driving gear 4022 starts to rotate, the crankshaft 4024 drives the reciprocating arm 4025 to reciprocate, and the reciprocating arm 4025 drives the upper template 403 of the punching machine to move up and down under the action of the rotating shaft 4027 to complete the punching action;

[0050] S3. When the lunch box needs to be punched, the upper template 701 of the punching die moves downward, driving the punching body 712 to move downward. The punching body 712 stops moving after it presses against the plastic lunch box. The punching body 712 compresses the positioning spring 715 upward, and the punching body 712 drives the rivet 713 to move upward. After the rivet 713 presses against the lower surface of the upper template 403 of the punching machine, it stops moving. The upper template 403 of the punching machine drives the upper template 701 of the punching die to continue to move downward. Under the action of the upper template 403 of the punching machine, the punching body 712 cuts the lunch box downward. The positioning spring 715 releases the pressure to push the punching body 712 downward. The punching body 712 moves downward to push the lunch box downward, completing the punching demoulding.

[0051] S4, when the lunch box formed in the blister mechanism is transported to the lunch box punching mechanism 4, the upper template 701 of the punching die moves downward to drive the trigger block 705 to move downward, the inclined surface at the end of the trigger block 705 cooperates with the inclined groove of the push block 7061, and the push block 7061 is pushed to slide inside the shaped groove 7069, and the push block 7061 drives the push shaft 7062 to slide in the same direction, and the push shaft 7062 drives the connecting rod 7063 to slide in the same direction, and the connecting rod 7063 drives the fixed block 7064 to slide in the same direction, and the fixed block 7064 drives the sliding block 7065 to slide in the same direction, and the sliding block 7065 drives the sliding shaft 7067 to move in the same direction, and the two sliding blocks 7065 compress the reset spring 7066 inward, and the sliding shaft 7067 moves inward, and the sliding shaft 7067 completes the lifting of the lunch box;

[0052] S5. After the lunch box falls, it is lifted by the lifting mechanism 706, and the external air pump blows air into the blowing hole 702, and then blows out from the air holes on the punching body 712 to clean the lunch box. The external vacuum pump sucks air from the suction hole 707, and the air holes opened on the lower mold core 704 of the punching mold absorb the impurities and chips around the lunch box;

[0053] S6. When the upper template 701 of the punching die moves upward, the upper template 701 of the punching die moves upward, driving the trigger block 705 to move upward. The inclined surface at the end of the trigger block 705 disengages from the inclined groove at the end of the push block 7061. Under the action of the release tension of the reset spring 7066, the sliding block 7065 is pushed to move to both sides. The sliding block 7065 drives the sliding shaft 7067 to move in the same direction. The sliding block 7065 drives the fixed block 7064 to slide in the same direction. The fixed block 7064 drives the connecting rod 7063 to slide in the same direction. The connecting rod 7063 drives the pushing shaft 7062 to slide in the same direction. The pushing shaft 7062 drives the pushing block 7061 to slide in the same direction. The sliding shaft 7067 moves to both sides. The sliding shaft 7067 releases the support for the lunch box, and the lunch box falls on the conveyor belt 5.

[0054] The above-mentioned embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person skilled in the art, several modifications, improvements and substitutions can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A plastic lunch box trimming device, characterized in that: The invention comprises a lunch box punching mechanism (4), a conveyor belt (5) is arranged below the lunch box punching mechanism (4), a lunch box conveying mechanism (3) is arranged on one side of the lunch box punching mechanism (4), a material receiving platform (6) is arranged on the side of the lunch box punching mechanism (4) away from the lunch box conveying mechanism (3), a lunch box blister mechanism (2) is arranged on the side of the lunch box conveying mechanism (3) away from the lunch box punching mechanism (4), a feeding reel (1) is arranged on the side of the lunch box blister mechanism (2) away from the lunch box conveying mechanism (3), a lunch box punching mold (7) is arranged inside the lunch box punching mechanism (4), and the lunch box punching mechanism (4) comprises a bottom plate bracket (405). The bottom plate bracket (405) is slidably connected to an upper die-cutting machine template (403) and a lower die-cutting machine template (404); opposing surfaces of the upper die-cutting machine template (403) and the lower die-cutting machine template (404) are provided with a fixture slide groove (409); a fixing fixture (408) is slidably connected in the fixture slide groove (409); a fixing bolt is threadedly connected to the fixing fixture (408); the fixing fixture (408) fixes the lunch box die-cutting mold (7) to the lower surface of the upper die-cutting machine template (403) and the upper surface of the lower die-cutting machine template (404) via the fixing bolt; guide shafts (406) are fixedly connected to both sides of the upper die-cutting machine template (403); The lunch box punching mold (7) comprises an upper punching mold template (701), a trigger block (705) is connected to the side of the upper punching mold template (701) by screws, and an inclined surface is provided at the end of the trigger block (705) away from the upper punching mold template (701), four positioning columns (708) are fixedly connected to the upper punching mold template (701), and the other ends of the four positioning columns (708) are slidably connected to the lower punching mold template (709), the upper punching mold core (703) is fixedly connected to the lower part of the upper punching mold template (701), and the lower punching mold core (704) is fixedly connected to the upper part of the lower punching mold template (709); A lifting mechanism (706) is symmetrically arranged on the lower template (709) of the punching die; a rib-shaped groove (7069) is fixedly connected to the upper surface of the lower template (709) of the punching die; a pushing block (7061) is slidably connected in the rib-shaped groove (7069); an end of the pushing block (7061) away from the lower template (709) of the punching die is provided with an inclined groove that matches the inclined surface of the trigger block (705); Three die feet (710) are fixed on the lower surface of the punching die lower template (709), and a sliding groove (7068) is provided inside the die foot (710). Sliding blocks (7065) are slidably connected inside the sliding grooves (7068) located on the outer side and the inner side, and a sliding shaft (7067) is rotatably connected between every two sliding blocks (7065) symmetrically arranged inside and outside. A total of four sliding shafts (7067) are arranged inside the sliding groove (7068) from left to right, and the two ends of each sliding shaft (7067) are rotatably connected to the sliding blocks (7065). Reset springs (7066) are fixedly connected between the first sliding block (7065) and the second sliding block (7065) from the left, and between the third sliding block (7065) and the fourth sliding block (7065) located inside the same sliding groove (7068). The sides of the first sliding block (7065) and the third sliding block (7065) from the right in the sliding groove (7068) of the outer mold foot (710) are fixedly connected with fixed blocks (7064), and the sides of the two fixed blocks (7064) away from the sliding blocks (7065) are riveted with connecting rods (7063). The sides of the first sliding block (7065) and the third sliding block (7065) from the left in the sliding groove (7068) of the inner mold foot (710) are also fixedly connected with the fixed blocks (7064), and the sides of the two fixed blocks (7064) away from the sliding blocks (7065) are also riveted with connecting rods (7063). A driving shaft (7062) is riveted to the middle of the connecting rod (7063), and the upper end of the driving shaft (7062) is fixedly connected to the driving block (7061).

2. A plastic lunch box trimming device according to claim 1, characterized in that: The upper die core (703) of the punching die is provided with four active punching grooves (711), and a punching body (712) is slidably connected in the active punching grooves (711).

3. A plastic lunch box trimming device according to claim 2, characterized in that: The upper surface of the punching die upper template (701) is provided with a plurality of countersunk holes, in which pull pins (713) are slidably connected, and the other end of the pull pin (713) is connected to the punching die body (712) via a thread. The lower surface of the punching die upper template (701) is fixedly connected with a positioning pin (714), and the other end of the positioning pin (714) is slidably connected to the punching die body (712), and a positioning spring (715) is provided on the outer sleeve of the positioning pin (714).

4. A plastic lunch box trimming device according to claim 3, characterized in that: The upper die plate (701) of the punching die is provided with a blowing hole (702), and the blowing hole (702) is composed of through holes opened on the upper die plate (701) of the punching die and the punching body (712); the lower die core (704) of the punching die is provided with an air suction hole (707), and the air suction hole (707) is composed of a through hole opened on the lower die core (704) of the punching die.

5. A plastic lunch box trimming device according to claim 4, characterized in that: The top of the bottom plate support (405) is fixedly connected to the punching machine upper plate (401), and the upper surface of the punching machine upper plate (401) is provided with a reciprocating punching mechanism (402), and the reciprocating punching mechanism (402) comprises a driving motor (4021), and a driving gear (4022) is fixedly connected to the output shaft of the driving motor (4021), and a driven gear (4023) is provided above the driving gear (4022), and the driving gear (4022) ) is meshedly connected with the driven gear (4023), the driven gear (4023) is fixedly connected with a crankshaft (4024), the crankshaft (4024) is rotatably connected with a reciprocating arm (4025), one end of the reciprocating arm (4025) away from the crankshaft (4024) is rotatably connected with a fixed support (4026) via a rotating shaft (4027), and the fixed support (4026) is fixedly connected to the upper surface of the template (403) of the punching machine.

6. A plastic lunch box trimming device according to claim 5, characterized in that: A hydraulic cylinder (407) is provided on the upper surface of the bottom plate support (405), and an output end of the hydraulic cylinder (407) is fixedly connected to the lower surface of the lower template (404) of the punching machine.

7. A trimming method for a plastic lunch box trimming device according to claim 6, characterized in that: The following steps are involved: S1, when the plastic lunch box trimming device is used, raw materials are placed on the feed reel (1), which is then transported to the lunch box blister mechanism (2), where the raw materials are blister-formed into lunch boxes, and driven by the lunch box conveying mechanism (3), the lunch boxes formed in the blister mechanism are transported to the lunch box punching mechanism (4); S2. Driven by the output shaft of the driving motor (4021), the driving gear (4022) starts to rotate, the crankshaft (4024) drives the reciprocating arm (4025) to reciprocate, and the reciprocating arm (4025) drives the upper template (403) of the punching machine to move up and down under the action of the rotating shaft (4027) to complete the punching action; S3. When the lunch box needs to be punched, the upper template (701) of the punching die moves downward to drive the punching body (712) to move downward. The punching body (712) stops moving after it contacts the plastic lunch box. The punching body (712) compresses the positioning spring (715) upward. The punching body (712) drives the rivet (713) to move upward. After the rivet (713) contacts the lower surface of the upper template (403) of the punching machine, the punching machine upper template (403) drives the upper template (701) of the punching die to continue to move downward. Under the action of the upper template (403) of the punching machine, the punching body (712) cuts the lunch box downward. The positioning spring (715) releases pressure to push the punching body (712) downward. The punching body (712) moves downward to push the lunch box downward, and the punching demoulding is completed. S4. When the lunch box formed in the blister mechanism is transported to the lunch box punching mechanism (4), the upper template (701) of the punching die moves downward, driving the trigger block (705) to move downward. The inclined surface at the end of the trigger block (705) cooperates with the inclined groove of the push block (7061), driving the push block (7061) to slide inside the shaped groove (7069). The push block (7061) drives the push shaft (7062) to slide in the same direction. The push shaft (7062) The connecting rod (7063) is driven to slide in the same direction, the connecting rod (7063) drives the fixed block (7064) to slide in the same direction, the fixed block (7064) drives the sliding block (7065) to slide in the same direction, the sliding block (7065) drives the sliding shaft (7067) to move in the same direction, the two sliding blocks (7065) compress the return spring (7066) inwardly, the sliding shaft (7067) moves inwardly, and the sliding shaft (7067) completes the lifting of the lunch box; S5, after the lunch box falls, it is lifted by the lifting mechanism (706), the external air pump blows air into the blowing hole (702), and then blows out from the air hole on the punching body (712) to clean the lunch box, and the external vacuum pump sucks air into the suction hole (707), and the air holes opened on the lower mold core (704) of the punching mold absorb the impurities and chips around the lunch box; S6. When the upper template (701) of the punching die moves upward, the upper template (701) of the punching die moves upward, driving the trigger block (705) to move upward. The inclined surface at the end of the trigger block (705) is disengaged from the inclined groove at the end of the push block (7061). Under the action of the release tension of the return spring (7066), the sliding block (7065) is pushed to move to both sides. The sliding block (7065) drives the sliding shaft (7067) to move in the same direction. The sliding block (7065) drives the fixed block (7064) to slide in the same direction. The fixed block (7064) drives the connecting rod (7063) to slide in the same direction. The connecting rod (7063) drives the push shaft (7062) to slide in the same direction. The push shaft (7062) drives the push block (7061) to slide in the same direction. The sliding shaft (7067) moves to both sides. The sliding shaft (7067) releases the support for the lunch box, and the lunch box falls on the conveyor belt (5).

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