Finished product receiving and conveying device and receiving and packing unit for docking with three-station thermoforming machine

Abstract

This invention discloses a finished product receiving and conveying device and a receiving and packing unit for a three-station thermoforming machine. The device includes a transmission belt, a mounting frame mounted on the top left side of the transmission belt, a cylinder mounted on the top of the mounting frame, an adjusting frame mounted on the output end of the cylinder, a bidirectional screw rotatably connected to the inner wall of the bottom end of the adjusting frame, a first moving platform slidingly at the bottom end of the adjusting frame, a threaded connection between the top of the first moving platform and the bidirectional screw, and a top rod mounted on the bottom of the first moving platform. The receiving and packing unit for a three-station thermoforming machine is mounted on the top right side of the transmission belt. Through the use of a vision sensor, a second moving platform, a baffle, a limiting frame, and a limiting adjustment mechanism, the packing unit ensures that when packing finished products of different sizes, the end of the finished product is aligned with the inner wall of one end of the box, aligning the finished product with the inner wall of the box. This ensures that the finished product maintains a stable position within the box and does not shift or tilt.

Description

Technical Field

[0001] This invention relates to the field of receiving and packing machine technology, specifically to a finished product receiving and conveying device and a receiving and packing machine for docking with a three-station thermoforming machine. Background Technology

[0002] The finished product receiving and conveying device and the receiving and packing unit for the three-station thermoforming machine constitute a comprehensive automated system designed to automatically collect, convey, and pack finished products on the thermoforming production line. With the rapid development of industrial automation, traditional manual operations can no longer meet the demands of large-scale, high-efficiency production. Therefore, automated production lines and equipment have emerged to improve production efficiency, reduce production costs, and ensure finished product quality. The finished product receiving and conveying device and the receiving and packing unit for the three-station thermoforming machine are a key application of industrial automation in thermoforming production lines.

[0003] Because thermoforming machines typically handle large-scale production, packing different sizes of finished products into boxes presents challenges. The packing unit cannot easily align one end of the finished product with the inner wall of the box, leading to unnecessary gaps. This can result in underutilization of the box's internal space and require packing personnel to spend more time and effort adjusting the arrangement. Furthermore, the box cannot be easily moved to accommodate varying product sizes, hindering optimization of packaging space. Smaller products may result in larger gaps within the box, while larger products may not fully utilize the space due to the fixed box dimensions, impacting overall space utilization and transportation efficiency. Therefore, innovative design is urgently needed to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a finished product receiving and conveying device and a receiving and packing unit for docking with a three-station thermoforming machine, so as to solve the problem mentioned in the background art that when packing finished products of different specifications, it is inconvenient to align one end of the finished product with the inner wall of one end of the box according to the specifications of the finished product, and it is inconvenient to make the moving distance of the box change with the specifications of the finished product when the box is moved. The technical solution of this invention provides a solution that is significantly different from the existing technology, which is too simplistic.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] Firstly, a finished product receiving and conveying device is provided, including a transmission belt, a mounting frame is installed at the top left side of the transmission belt, a cylinder is installed at the top of the mounting frame, an adjusting frame is installed at the output end of the cylinder, a bidirectional screw is rotatably connected to the inner wall of the bottom end of the adjusting frame, a first moving platform is slidably mounted at the bottom end of the adjusting frame, the top end of the first moving platform is threadedly connected to the bidirectional screw, a top rod is installed at the bottom of the first moving platform, and a receiving and packing unit for a three-station thermoforming machine is installed at the top right side of the transmission belt.

[0007] Secondly, the present invention provides a receiving and packing unit for a three-station thermoforming machine. A movable frame is installed at the top of the transmission belt, a sliding table slides inside the movable frame, a vision sensor is installed at the back of the movable frame, a hydraulic cylinder is installed on the surface of the sliding table, a second movable table is connected to the output end of the hydraulic cylinder, a pneumatic suction cup is installed at the bottom of the second movable table, a placement platform is installed at the side end of the transmission belt, a baffle is provided at the top of the transmission belt, a limit frame slides at the top of the placement platform, a groove is opened at the top of the placement platform, a lead screw is rotatably connected inside the groove, a first movable plate is slidably connected inside the groove, the bottom of the first movable plate meshes with the lead screw, and a second movable plate is provided at the top of the first movable plate.

[0008] A limit adjustment mechanism is provided on the surface of the placement platform and the top surface of the transmission belt. The limit adjustment mechanism is used to adjust the initial position of the box according to the specifications of the finished product.

[0009] A movement compensation component is disposed inside the first and second moving plates. The movement compensation component can compensate for the movement distance of the box during packing according to the specifications of the finished product.

[0010] Preferably, the limiting adjustment mechanism includes two sets of first groove platforms installed at the top of the transmission belt, and two sets of second groove platforms installed at the top of the placement platform. A first electric push rod is installed on the inner wall of one set of first groove platforms, and the extended end of the first electric push rod is connected to a baffle. A first oil tank is installed on the side of the other set of first groove platforms. A first piston rod slides inside the first oil tank. A protrusion is installed at the end of the first piston rod. The protrusion slides in a sliding groove on the side of the other set of first groove platforms. The protrusion is connected to the side of the baffle. A second oil tank is installed on the inner wall of the second groove platform near the transmission belt. A second piston rod slides inside the second oil tank. The end of the second piston rod is connected to a limiting frame. A clamping arm is rotatably connected inside the limiting frame. A hose is connected between the first oil tank and the second oil tank.

[0011] Preferably, there are two sets of clamping arms, which are symmetrically distributed inside the limiting frame, and torsion springs are installed inside the clamping arms.

[0012] Preferably, the clamping arm is composed of a short arm and a long arm connected together, and the included angle between the short arm and the long arm is 90°. Rollers are rotatably connected to the ends of both the short arm and the long arm of the clamping arm.

[0013] Preferably, the moving compensation assembly includes an oil storage tank and a conveying tank installed on the top surface of the first moving plate. A second electric push rod is also installed on the top of the first moving plate. A push plate is installed on the extended end of the second electric push rod. The push plate is slidably connected to the conveying tank. A third electric push rod is installed on the side end of the first moving plate. A squeezing block is installed on the extended end of the third electric push rod. A compression block is slidably limited inside the squeezing block. An oil pipe is connected to the end of the conveying tank through a connecting pipe. A third piston rod slides inside the oil pipe.

[0014] Preferably, the push plate has the same dimensions as the inner wall of the conveying box, and the push plate slides laterally inside the conveying box. One end of the compression block is equipped with a spring, and the other end of the spring is connected to the inner wall of the compression block. The compression block slides longitudinally inside the conveying box.

[0015] Preferably, a hose is connected between the oil storage tank and the delivery tank, and a hose is connected between the oil pipe and the oil storage tank, with a one-way valve installed at the end of both the connecting pipe and the hose.

[0016] Preferably, a controller is installed on the side of the transmission belt. At this time, the controller sends a first control message, which drives the motor to control the rotation of the bidirectional screw. The rotation of the bidirectional screw makes the position of the push rod in the center of the finished product. The controller sends a second control message to drive the cylinder to operate. At this time, the push rod puts the finished product on the surface of the transmission belt. When the finished product passes the vision sensor, the vision sensor will transmit the size information of the finished product to the controller. At this time, the controller sends a third control message to drive the first electric push rod to move the baffle, so that the center of the finished product is located at the bottom of the pneumatic suction cup.

[0017] Preferably, the controller continues to issue a fourth control message, which drives the pneumatic suction cup and hydraulic cylinder to load the finished product into the box. After each row of finished products is loaded into the box, the controller issues a fifth control message to drive the screw to rotate, enabling the box to move forward until the entire box of finished products is loaded. When the vision sensor transmits the size information of the finished product to the controller, the controller generates compensation information, which drives the third electric push rod and the second electric push rod to operate, ensuring that the moving distance of the box is consistent with the size of the finished product.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The present invention, through the setting of a vision sensor, a second moving stage, a baffle, a limiting frame and a limiting adjustment mechanism, can ensure that when packing finished products of different sizes, the end of the finished product and the inner wall of one end of the box are on the same plane, so that the finished product and the inner wall of the box are aligned, thereby ensuring that the finished product maintains a stable position in the box and does not shift or tilt. Furthermore, when the finished product and the inner wall of the box are precisely aligned, the internal space of the box can be maximized, and gaps can be reduced to avoid waste.

[0020] 2. The present invention, through the setting of a first moving plate, a second moving plate and a moving compensation component, can ensure that when the box moves, the moving distance of the box changes with the specifications of the finished product. When the box moves to the next row after each row of packing is completed, the end of the finished product in the next row can be tightly attached to the end of the finished product in the previous row. This allows the packing unit to adjust the moving distance of the box according to the specifications of the finished product, ensuring that each row of finished products can be tightly arranged, reducing gaps. When the size of the packing container is limited, all the space inside the box can be effectively utilized, avoiding waste.

[0021] 3. The present invention, through the setting of the first moving plate, the second moving plate and the clamping arm, can limit the movement of the box, avoid misalignment, displacement or instability during movement, and ensure that the box maintains a precise position and orientation during movement. This avoids the problem that finished products cannot be accurately loaded into the box due to misalignment or displacement, which leads to incorrect position of finished products in the box and uneven stacking. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure on the right side of the present invention;

[0024] Figure 3 This is a schematic diagram of the finished product receiving and conveying device.

[0025] Figure 4 This is a schematic diagram of a partial structure of the adjustment frame and vision sensor;

[0026] Figure 5 This is a schematic diagram of a partial structure of the baffle.

[0027] Figure 6 This is a schematic diagram of a partial structure of the limit frame;

[0028] Figure 7 This is a schematic diagram of the exploded structure of the limit frame;

[0029] Figure 8 This is a partial structural diagram of the placement platform;

[0030] Figure 9This is a schematic diagram of the exploded structure of the first and second movable plates.

[0031] Figure 10 This is a schematic diagram of the exploded structure of the mobile compensation component.

[0032] In the diagram: 1. Transmission belt; 2. Mounting bracket; 3. Cylinder; 4. Adjusting bracket; 5. Double-acting screw; 6. First moving stage; 7. Push rod; 8. Moving frame; 9. Slide table; 10. Vision sensor; 11. Second moving stage; 12. Pneumatic suction cup; 13. Placement platform; 14. Baffle; 15. Limiting bracket; 16. First moving plate; 17. Second moving plate; 18. Limiting adjustment mechanism; 181. First slot platform; 182. First electric... 183. Push rod; 184. First oil tank; 185. First piston rod; 186. Second tank platform; 187. Second oil tank; 188. Second piston rod; 189. Clamping arm; 100. Moving compensation assembly; 191. Oil storage tank; 192. Conveying box; 193. Second electric push rod; 194. Push plate; 195. Third electric push rod; 196. Extrusion block; 197. Compression block; 198. Oil pipe; 199. Third piston rod. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1 - Figure 10 The present invention provides a technical solution: a finished product receiving and conveying device and a receiving and packing unit for docking with a three-station thermoforming machine, including a transmission belt 1, an mounting frame 2 installed at the top left side of the transmission belt 1, a cylinder 3 installed at the top of the mounting frame 2, an adjusting frame 4 installed at the output end of the cylinder 3, a bidirectional screw 5 rotatably connected to the inner wall of the bottom end of the adjusting frame 4, a first moving platform 6 sliding at the bottom end of the adjusting frame 4, the top end of the first moving platform 6 being threadedly connected to the bidirectional screw 5, a top rod 7 installed at the bottom of the first moving platform 6, and a receiving and packing unit for docking with a three-station thermoforming machine installed at the top right side of the transmission belt 1;

[0035] A movable frame 8 is installed at the top of the transmission belt 1. A slide table 9 slides inside the movable frame 8. A vision sensor 10 is installed at the back of the movable frame 8. A hydraulic cylinder is installed on the surface of the slide table 9. A second movable table 11 is connected to the output end of the hydraulic cylinder. A pneumatic suction cup 12 is installed at the bottom of the second movable table 11. A placement platform 13 is installed at the side end of the transmission belt 1. A baffle 14 is set at the top of the transmission belt 1. A limit frame 15 slides at the top of the placement platform 13. A slide groove is opened at the top of the placement platform 13. A lead screw is rotatably connected inside the slide groove. A first movable plate 16 is slidably connected inside the slide groove. The bottom of the first movable plate 16 meshes with the lead screw. A second movable plate 17 is set at the top of the first movable plate 16.

[0036] Limit adjustment mechanism 18 is provided on the top surface of the placement platform 13 and the transmission belt 1. Limit adjustment mechanism 18 is used to adjust the initial position of the box according to the specifications of the finished product.

[0037] The movement compensation component 19 is disposed inside the first moving plate 16 and the second moving plate 17. The movement compensation component 19 can compensate for the movement distance of the box during packing according to the specifications of the finished product.

[0038] When packing finished products of different specifications, it is inconvenient to align one end of the finished product with the inner wall of one end of the box according to the specifications of the finished product. Furthermore, it is inconvenient to adjust the moving distance of the box to match the specifications of the finished product when it is moved. This embodiment of the present invention can solve the above problems. The specific implementation is as follows: A motor drives the bidirectional screw 5 to rotate, thereby moving the first moving table 6 inside the adjusting frame 4 until the top rod 7 is in the central area of ​​the finished product. Then, the cylinder 3 lowers the top rod 7, thereby placing the finished product generated by the three-station thermoforming machine onto the surface of the transmission belt 1. When the finished product passes the vision sensor 10, the first electric push rod 182 drives the baffle 14 to move until the center of the finished product is located at the bottom of the pneumatic suction cup 12. When the baffle 14 moves, it will squeeze the first oil tank 183, causing the first oil tank 183 to be injected into the second oil tank 186. At this time, the second piston rod 187 drives the limit frame 15 to move synchronously. Then, the box is placed on the surface of the second moving plate 17. At this time, the screw is rotated so that one end of the box is attached to the inner end of the clamping arm 188. Then, the finished product is adsorbed by the pneumatic suction cup 12. Then, the finished product is moved to the upper end of the box by the second moving table 11. Then, the finished product is dropped into the box by the hydraulic cylinder. When the screw drives the first moving plate 16, the box will squeeze the short arm of the clamping arm 188. At this time, the long arm of the clamping arm 188 will close inward to limit the box and prevent the box from being misaligned, shifted or unstable when it moves.

[0039] Depending on the specifications of the finished product, the extended end of the second electric push rod 193 will extend to different lengths, thereby pushing the push plate 194 to adjust the size of the internal space of the conveying box 192. Subsequently, the push plate 194 will squeeze the compression block 197 during adjustment, causing it to expand and contract inside the compression block 196. At this time, the oil inside the oil tank 191 will enter the conveying box 192 through the hose. When the screw rotates and the moving plate moves to the next position, the third electric push rod 195 will squeeze the oil inside the conveying box 192 into the oil pipe 198 through the compression block 197 and the compression block 196. Inside, when the third electric push rod 195 retracts, the oil inside the oil storage tank 191 will continue to fill the conveying box 192. The oil inside the conveying box 192 can push the third piston rod 199 to extend, thereby driving the second moving plate 17 to move backward. When the screw rotates again, the third electric push rod 195 will continue to squeeze the oil inside the conveying box 192 into the oil pipe 198 through the compression block 197 and the extrusion block 196, so that the box can compensate for its own movement distance each time it moves, so as to ensure that the movement distance of the box can be consistent with the size of the finished product.

[0040] As an embodiment of the present invention, the limiting adjustment mechanism 18 includes two sets of first groove platforms 181 installed at the top of the transmission belt 1, and two sets of second groove platforms 185 installed at the top of the placement platform 13. A first electric push rod 182 is installed on the inner wall of one set of first groove platforms 181, and the extended end of the first electric push rod 182 is connected to the baffle 14. A first oil tank 183 is installed on the side of the other set of first groove platforms 181. A first piston rod 184 slides inside the first oil tank 183. A protrusion is installed at the end of the first piston rod 184. The protrusion slides in the sliding groove on the side of the other set of first groove platforms 181. The protrusion and the side of the baffle 14 are connected. A second oil tank 186 is installed on the inner wall of the second trough 185 near the transmission belt 1. A second piston rod 187 slides inside the second oil tank 186. The end of the second piston rod 187 is connected to the limit frame 15. A clamping arm 188 is rotatably connected inside the limit frame 15. A hose is connected between the first oil tank 183 and the second oil tank 186. The limit adjustment mechanism 18 can ensure that when the packing unit packs finished products of different sizes, the ends of the finished products can be on the same plane as the inner wall of one end of the box, so that the finished products are aligned with the inner wall of the box and the internal space of the box is not fully utilized.

[0041] As an embodiment of the present invention, there are two sets of clamping arms 188, which are symmetrically distributed inside the limiting frame 15. A torsion spring is installed inside the clamping arms 188. The design of the two sets of symmetrical clamping arms 188 can avoid misalignment, displacement or instability when the box moves, which would prevent the finished product from being accurately loaded into the box. The design of the torsion spring makes the box automatically reset when the clamping arms 188 are not squeezed.

[0042] As an embodiment of the present invention, the clamping arm 188 is composed of a short arm and a long arm connected together, and the included angle between the short arm and the long arm is 90°. Rollers are rotatably connected to the ends of both the short arm and the long arm of the clamping arm 188. When the box squeezes the short arm, the long arm can better clamp the box. The design of the rollers avoids the clamping arm 188 from damaging the surface of the box.

[0043] As an embodiment of the present invention, the movement compensation component 19 includes an oil storage tank 191 and a conveying box 192 installed on the top surface of the first moving plate 16. A second electric push rod 193 is also installed on the top of the first moving plate 16. A push plate 194 is installed on the extended end of the second electric push rod 193. The push plate 194 is slidably connected to the conveying box 192. A third electric push rod 195 is installed on the side end of the first moving plate 16. A squeezing block 196 is installed on the extended end of the third electric push rod 195. A compression block 197 is slidably limited inside the squeezing block 196. An oil pipe 198 is connected to the end of the conveying box 192 through a connecting pipe. A third piston rod 199 slides inside the oil pipe 198. The movement compensation component 19 can ensure that when the box is moving, the moving distance of the box can change with the specifications of the finished product. When the box is moved to the next row after each row of packing is completed, the end of the finished product in the next row can be closely attached to the end of the finished product in the previous row, so that the packing unit can adjust the moving distance of the box according to the specifications of the finished product.

[0044] As an embodiment of the present invention, the push plate 194 has the same inner wall size as the conveying box 192, and the push plate 194 slides laterally inside the conveying box 192. One end of the compression block 197 is equipped with a spring, and the other end of the spring is connected to the inner wall of the extrusion block 196. The extrusion block 196 slides longitudinally inside the conveying box 192. The push plate 194 moves inside the conveying box 192 according to the size of the finished product, thereby adjusting the internal space of the conveying box 192. This allows the box to compensate for its own movement distance each time it moves, ensuring that the movement distance of the box is consistent with the size of the finished product.

[0045] As an embodiment of the present invention, a hose is connected between the oil storage tank 191 and the delivery tank 192, and a hose is connected between the oil pipe 198 and the oil storage tank 191. Both the connecting pipe and the hose end are equipped with a one-way valve. The one-way valve between the oil storage tank 191 and the delivery tank 192 can automatically replenish the oil inside the delivery tank 192 when the oil inside the delivery tank 192 is delivered to the oil pipe 198. The installation of the one-way valve at the connecting pipe can prevent the oil in the oil pipe 198 from flowing back into the delivery tank 192. The design of the one-way valve between the oil pipe 198 and the oil storage tank 191 can send the oil back into the oil storage tank 191 when the first moving plate 16 is reset.

[0046] A controller is installed on the side of the transmission belt 1. At this time, the controller sends out the first control information, which drives the motor to control the rotation of the bidirectional screw 5. The rotation of the bidirectional screw 5 makes the position of the top rod 7 in the center of the finished product. The controller sends out the second control information to drive the cylinder 3 to operate. At this time, the top rod 7 puts the finished product on the surface of the transmission belt 1. When the finished product passes the vision sensor 10, the vision sensor 10 will transmit the size information of the finished product to the controller. At this time, the controller sends out the third control information to drive the first electric push rod 182 to move the baffle 14 so that the center of the finished product is located at the bottom of the pneumatic suction cup 12.

[0047] The controller continues to issue a fourth control message, which drives the pneumatic suction cup 12 and the hydraulic cylinder to load the finished product into the box. After each row of finished products is loaded into the box, the controller will issue a fifth control message to drive the screw to rotate, which can move the box forward until the entire box of finished products is loaded. When the vision sensor 10 transmits the size information of the finished product to the controller, the controller will generate compensation information. The compensation information will drive the third electric push rod 195 and the second electric push rod 193 to operate, ensuring that the moving distance of the box is consistent with the size of the finished product.

[0048] Working principle: In operation, the motor first drives the bidirectional screw 5 to rotate, causing the first moving table 6 to move inside the adjusting frame 4 until the top rod 7 is in the center of the finished product area. Then, the cylinder 3 lowers the top rod 7, causing the finished product generated by the three-station thermoforming machine to fall onto the surface of the transmission belt 1. When the finished product passes the vision sensor 10, the first electric push rod 182 drives the baffle 14 to move until the center of the finished product is at the bottom of the pneumatic suction cup 12. During movement, the baffle 14 squeezes the first oil tank 183, causing it to fill the second oil tank 186. When the second piston rod 187 drives the limiting frame 15 to move synchronously, the box is placed on the surface of the second moving plate 17. At this time, the screw is rotated so that one end of the box is attached to the inner end of the clamping arm 188. Then, the finished product is adsorbed by the pneumatic suction cup 12. The finished product is then moved to the upper end of the box by the second moving table 11. Then, the finished product is dropped into the box by the hydraulic cylinder. When the screw drives the first moving plate 16, the box will squeeze one end of the short arm of the clamping arm 188. At this time, the long arm of the clamping arm 188 will close inward to limit the box and prevent misalignment, displacement or instability when the box moves.

[0049] Depending on the specifications of the finished product, the extended end of the second electric push rod 193 will extend to different lengths, thereby pushing the push plate 194 to adjust the size of the internal space of the conveying box 192. Subsequently, the push plate 194 will squeeze the compression block 197 during adjustment, causing it to expand and contract inside the compression block 196. At this time, the oil inside the oil tank 191 will enter the conveying box 192 through the hose. When the screw rotates and the moving plate moves to the next position, the third electric push rod 195 will squeeze the oil inside the conveying box 192 into the oil pipe 198 through the compression block 197 and the compression block 196. When the third electric push rod 195 retracts, the oil inside the oil tank 191... The oil will continue to fill the conveying box 192. The oil inside the conveying box 192 can push the third piston rod 199 to extend, thereby driving the second moving plate 17 to move backward. When the screw rotates again, the third electric push rod 195 will continue to squeeze the oil inside the conveying box 192 into the oil pipe 198 through the compression block 197 and the extrusion block 196, so that the box can compensate for its own movement distance each time it moves, so as to ensure that the movement distance of the box can be consistent with the size of the finished product. When the screw drives the first moving table 6 to move to the initial position, the oil inside the oil pipe 198 will enter the oil storage tank 191 through the hose.

[0050] Contents not described in detail in this specification are prior art known to those skilled in the art. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Terms such as "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," and "tail" indicate orientations or positional relationships based on the accompanying drawings, and are used only for ease of description and simplification, not to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0051] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A receiving and packing unit for a three-station thermoforming machine, used in finished product receiving and conveying devices, characterized in that: The finished product receiving and conveying device includes a transmission belt (1), a mounting frame (2) is installed on the top left side of the transmission belt (1), a cylinder (3) is installed on the top of the mounting frame (2), an adjusting frame (4) is installed on the output end of the cylinder (3), a bidirectional screw (5) is rotatably connected to the inner wall of the bottom end of the adjusting frame (4), a first moving platform (6) is slidably attached to the bottom end of the adjusting frame (4), the top end of the first moving platform (6) is threadedly connected to the bidirectional screw (5), a top rod (7) is installed at the bottom of the first moving platform (6), a receiving and packing unit for a three-station thermoforming machine is installed on the top right side of the transmission belt (1), a moving frame (8) is installed on the top of the transmission belt (1), and a sliding table (9) slides inside the moving frame (8). A vision sensor (10) is installed on the back of the movable frame (8), a hydraulic cylinder is installed on the surface of the slide (9), the output end of the hydraulic cylinder is connected to a second movable platform (11), a pneumatic suction cup (12) is installed at the bottom of the second movable platform (11), a placement platform (13) is installed on the side of the transmission belt (1), a baffle (14) is provided at the top of the transmission belt (1), a limit frame (15) slides at the top of the placement platform (13), a slide groove is provided at the top of the placement platform (13), a lead screw is rotatably connected inside the slide groove, a first movable plate (16) is slidably connected inside the slide groove, the bottom of the first movable plate (16) meshes with the lead screw, and a second movable plate (17) is provided at the top of the first movable plate (16). Limit adjustment mechanism (18) is provided on the top surface of the placement platform (13) and the transmission belt (1). The limit adjustment mechanism (18) is used to adjust the initial position of the box according to the specifications of the finished product. A moving compensation component (19) is disposed inside the first moving plate (16) and the second moving plate (17). The moving compensation component (19) can compensate for the movement distance of the box during packing according to the specifications of the finished product. The moving compensation component (19) includes an oil storage tank (191) and a conveying box (192) installed on the top surface of the first moving plate (16). A second electric push rod (193) is also installed on the top of the first moving plate (16). A push plate (194) is installed on the extended end of the second electric push rod (193). The push plate (194) is slidably connected to the conveying box (192). A third electric push rod (195) is installed on the side end of the first moving plate (16). A pressing block (196) is installed on the extended end of the third electric push rod (195). The compression block (197) is slidably limited inside the extrusion block (196). The end of the conveying box (192) is connected to the oil pipe (198) through the connecting pipe. The third piston rod (199) slides inside the oil pipe (198). The push plate (194) has the same size as the inner wall of the conveying box (192) and slides laterally inside the conveying box (192). One end of the compression block (197) is equipped with a spring, and the other end of the spring is connected to the inner wall of the extrusion block (196). The extrusion block (196) slides longitudinally inside the conveying box (192). A hose is connected between the oil storage tank (191) and the conveying box (192). A hose is connected between the oil pipe (198) and the oil storage tank (191). Both the connecting pipe and the hose are equipped with one-way valves.

2. The receiving and packing unit of the three-station thermoforming machine according to claim 1, characterized in that: The limiting adjustment mechanism (18) includes two sets of first groove platforms (181) installed at the top of the transmission belt (1), and two sets of second groove platforms (185) installed at the top of the placement platform (13). A first electric push rod (182) is installed on the inner wall of one set of first groove platforms (181), and the extended end of the first electric push rod (182) is connected to the baffle (14). A first oil tank (183) is installed on the side of the other set of first groove platforms (181), and a first piston rod (184) slides inside the first oil tank (183). The end of the first piston rod (184) is... A protrusion is installed on the part, and the protrusion slides in the side groove of the first groove platform (181) of another set. The protrusion is connected to the side of the baffle (14). A second oil tank (186) is installed on the inner wall of the second groove platform (185) near the transmission belt (1). A second piston rod (187) slides inside the second oil tank (186). The end of the second piston rod (187) is connected to the limit frame (15). A clamping arm (188) is rotatably connected inside the limit frame (15). A hose is connected between the first oil tank (183) and the second oil tank (186).

3. The receiving and packing unit of the three-station thermoforming machine according to claim 2, characterized in that: The clamping arms (188) are in two sets and are symmetrically distributed inside the limiting frame (15). Torsion springs are installed inside the clamping arms (188).

4. The receiving and packing unit of the three-station thermoforming machine according to claim 3, characterized in that: The clamping arm (188) is composed of a short arm and a long arm connected together, and the angle between the short arm and the long arm is 90°. Rollers are rotatably connected to the ends of both the short arm and the long arm of the clamping arm (188).

5. The receiving and packing unit of the three-station thermoforming machine according to claim 4, characterized in that: A controller is installed on the side of the transmission belt (1). At this time, the controller sends out the first control information. The first control information drives the motor to control the rotation of the bidirectional screw (5). The rotation of the bidirectional screw (5) makes the position of the top rod (7) in the center of the finished product. The controller sends out the second control information to drive the cylinder (3) to operate. At this time, the top rod (7) drops the finished product onto the surface of the transmission belt (1). When the finished product passes the vision sensor (10), the vision sensor (10) will transmit the size information of the finished product to the controller. At this time, the controller sends out the third control information to drive the first electric push rod (182) to move the baffle (14) so ​​that the center of the finished product is located at the bottom of the pneumatic suction cup (12).

6. The receiving and packing unit of the three-station thermoforming machine according to claim 5, characterized in that: The controller continues to issue a fourth control message, which drives the pneumatic suction cup (12) and hydraulic cylinder to load the finished product into the box. After each row of finished products is loaded into the box, the controller issues a fifth control message to drive the screw to rotate, which enables the box to move forward until the entire box of finished products is loaded. When the vision sensor (10) transmits the size information of the finished product to the controller, the controller generates compensation information. The compensation information drives the third electric push rod (195) and the second electric push rod (193) to operate, ensuring that the moving distance of the box is consistent with the size of the finished product.

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