A cylindrical plastic welding device and its working method

Abstract

The present invention relates to a cylindrical plastic welding device, which includes a feeding mechanism, a support table, a material transfer mechanism, a welding mechanism and a clamping mechanism. A support table is installed outside the feeding mechanism. The support table is equipped with a material transfer mechanism for the movement of cylindrical plastics, a welding mechanism for the welding of cylindrical plastics, and a clamping mechanism for the clamping and limiting of cylindrical plastics. The feeding mechanism includes a box body. Inside the box body, there is a storage bin with a sloping bottom, and a partition is arranged inside the storage bin; while the material transfer component moves the cylindrical plastics on the second limiting plate to the first limiting plate, it also moves the cylindrical plastics on the first limiting plate at equal distances, and the distance of each movement is the distance between adjacent first limiting grooves on the same first limiting plate, so as to realize the correspondence between the cylindrical plastics and the clamping mechanism while completing the sequential equal-distance movement of the cylindrical plastics.

Description

Technical Field

[0001] The present invention relates to the technical field of welding devices, and particularly relates to a cylindrical plastic welding device and its working method. Background Art

[0002] The equipment required to implement the welding process, the welding device includes a welding machine, a welding process equipment and welding auxiliary appliances. The cylindrical plastic welding device completes the welding between two cylindrical plastics through a laser welding head.

[0003] Before welding between cylindrical plastics, it is necessary to respectively clamp and position and align the two cylindrical plastics, and then weld the contact parts of the two cylindrical plastics. Therefore, before clamping, it is necessary to complete the feeding of the cylindrical plastics. The existing welding devices cannot achieve synchronous feeding and equidistant material transfer during the feeding process. Therefore, during the actual operation, the clamping part and the feeding part are prone to mismatch, which in turn leads to welding deviation. Summary of the Invention

[0004] The problem solved by the present invention is to provide a cylindrical plastic welding device and its working method, which solves the technical problem that before welding between cylindrical plastics, it is necessary to respectively clamp and position and align the two cylindrical plastics, and then weld the contact parts of the two cylindrical plastics. Therefore, before clamping, it is necessary to complete the feeding of the cylindrical plastics. The existing welding devices cannot achieve synchronous feeding and equidistant material transfer during the feeding process. Therefore, during the actual operation, the clamping part and the feeding part are prone to mismatch, which in turn leads to welding deviation.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A cylindrical plastic welding device includes a feeding mechanism, a support table, a material transfer mechanism, a welding mechanism and a clamping mechanism. A support table is installed outside the feeding mechanism, and a material transfer mechanism for moving cylindrical plastics, a welding mechanism for welding cylindrical plastics and a clamping mechanism for clamping and positioning cylindrical plastics are installed on the support table;

[0007] The feeding mechanism includes a box body. Inside the box body, there is a storage bin with a sloping bottom, and a partition is arranged inside the storage bin. On the top side wall of the box body, there is a discharge hopper with a sloping bottom. Two lifting plates are slidably installed in the storage bin, and the top side wall of the lifting plate is parallel to the slope of the storage bin;

[0008] The welding mechanism includes a mounting arm, on the top of which a first electric slide rail is horizontally installed. A first electric slider is slidably installed on the first electric slide rail. The first electric slider is connected to the end of a horizontal second electric slide rail, and the first electric slide rail and the second electric slide rail are perpendicularly arranged. A second electric slider is slidably installed on the second electric slide rail, and the second electric slider is slidably installed on a vertical third electric slide rail. A welding head is installed at the bottom end of the third electric slide rail.

[0009] Preferably, adjustment grooves are symmetrically and vertically formed on the side wall of the box body. A first cylinder is vertically installed inside the box body. The telescopic end of the top of the first cylinder is installed with a U-shaped sliding seat, and both ends of the U-shaped sliding seat are respectively connected to the lifting plate. Guide rods are respectively and slidably installed through both ends of the U-shaped sliding seat, and both ends of the guide rods are connected to the box body through rod seats.

[0010] Preferably, the material transfer mechanism includes a mounting plate installed on the support platform. Three parallel first limiting plates are installed on the support platform through support columns, and the width of the middle first limiting plate is twice the width of the first limiting plates on both sides. A material transfer component is movably installed between adjacent first limiting plates. The material transfer component includes two parallel second limiting plates, and the two second limiting plates are connected through a connecting rod.

[0011] Preferably, a speed reducer is installed on one side of the mounting plate, and the input end of the speed reducer is connected to the output end of the first motor. A guide plate is installed on the other side of the mounting plate. A rectangular guide groove is formed on the guide plate, and the four corners of the rectangular guide groove are all chamfered. A shaft seat is installed inside the rectangular guide groove on the other side of the mounting plate. The output end of the speed reducer is installed with a transmission shaft, and the end of the transmission shaft penetrates through the shaft seat.

[0012] Preferably, a rotating arm is installed at the end of the transmission shaft, and a sliding groove is formed on the rotating arm. A slider is slidably installed in the sliding groove. A connecting shaft is installed through the slider by a bearing. A roller is installed at one end of the connecting shaft, and the roller rolls along the inner wall of the rectangular guide groove. The other end of the connecting shaft is connected to a sliding arm. A support arm is installed on the sliding arm, and the sliding arm and the support arm are respectively connected to the two material transfer components.

[0013] Preferably, slide rails are installed on both the mounting plate and the guide seat. The slide rail on the mounting plate is horizontally arranged, and the slide rail on the guide seat is vertically arranged. The guide seat is slidably installed on the slide rail of the mounting plate, and the sliding arm is slidably installed on the slide rail of the guide seat.

[0014] Preferably, a number of first limiting grooves are equidistantly formed on the first limiting plate, and a blanking groove is formed at the end of the first limiting plate. A number of second limiting grooves are equidistantly formed on the second limiting plate. The distance between adjacent second limiting grooves on the same second limiting plate is the same as the distance between adjacent first limiting grooves on the same first limiting plate.

[0015] Preferably, the clamping mechanism includes a second air cylinder and a third air cylinder installed on the bottom side of the support table, and the second air cylinder and the third air cylinder are respectively located on both sides of the material transfer mechanism. The telescopic ends of the tops of the second air cylinder and the third air cylinder are both installed with lifting plates.

[0016] Preferably, an electric push rod is installed on the top of one of the lifting plates, and the telescopic end of the electric push rod is connected to a socket bearing. A second motor is installed on the top of the other lifting plate, and the output end of the second motor is connected to the other socket.

[0017] A working method of a cylindrical plastic welding device, and the specific operation steps of this working method are as follows:

[0018] Step 1: Place two cylindrical plastics in the storage bins of the feeding mechanism respectively, and separate them by a partition. At this time, the first air cylinder works to drive the U-shaped sliding seat to move upward along the guide rod. At this time, the two lifting plates move upward synchronously until the top sides of the lifting plates are flush with the bottom side of the discharge hopper. The cylindrical plastics in the storage bin move upward with the lifting plates, are transported from the storage bin to the discharge hopper, roll along the discharge hopper onto the two material transfer components, and are limited by the second limiting grooves of the second limiting plates.

[0019] Step 2: At this time, the first motor works, the speed reducer adjusts the speed to drive the transmission shaft to rotate, and then drives the rotating arm to rotate. When the rotating arm rotates, the slider moves along the chute, and the roller rolls along the inner wall of the rectangular guide groove of the guide plate, driving the sliding arm connected by the connecting shaft to move. At this time, the sliding arm moves up and down along the slide rail of the guide seat, and the guide seat moves horizontally along the slide rail of the mounting plate, realizing the movement of the material transfer component. At this time, every time the rotating arm rotates one circle, the material transfer component moves the cylindrical plastic on the second limiting plate to the first limiting plate while moving the cylindrical plastic on the first limiting plate at equal intervals, and the moving distance is the distance between adjacent first limiting grooves on the same first limiting plate, thereby realizing the sequential equal-distance movement of the cylindrical plastics.

[0020] Step 3: Drive the lifting plates to move downward through the second air cylinder and the third air cylinder until the sockets are flush with the cylindrical plastics. Work the electric push rod to drive one socket to move, and then clamp the two cylindrical plastics between the two sockets. At this time, the second air cylinder and the third air cylinder work simultaneously to drive the cylindrical plastics to move upward, and the welding mechanism adjusts the position of the welding head. Then work the second motor to drive the cylindrical plastics to rotate, realizing the welding of the two cylindrical plastics. The welded cylindrical plastics are placed on the first limiting plate of the material transfer mechanism again through the clamping mechanism. When the cylindrical plastics move to the blanking groove of the first limiting plate, they fall along the blanking groove at this time.

[0021] The beneficial effects of the present invention are as follows: When the first cylinder works, it drives the U-shaped sliding seat to move upward along the guide rod. At this time, the two lifting plates move upward synchronously until the top sides of the lifting plates are flush with the bottom side of the discharge hopper. As the lifting plates move upward, the cylindrical plastics in the storage bin are transported from the storage bin to the discharge hopper and roll down along the discharge hopper onto the two material transfer components of the material transfer mechanism. And they are limited by the second limiting grooves of the second limiting plates. After the lifting plates move downward, the cylindrical plastics in the storage bin automatically roll down to supplement the top sides of the lifting plates. By repeating the operation, the cylindrical plastics in the storage bin are continuously transported through the discharge hopper to the material transfer components, realizing the automatic feeding operation.

[0022] When the first motor works, the speed reducer adjusts the speed to drive the transmission shaft to rotate, and then drives the rotating arm to rotate. When the rotating arm rotates, the slider moves along the chute, and the roller rolls along the inner wall of the rectangular guide groove of the guide plate, driving the sliding arm connected by the connecting shaft to move. At this time, the sliding arm moves up and down along the slide rail of the guide seat, and the guide seat moves horizontally along the slide rail of the mounting plate, realizing the movement of the material transfer component. At this time, every time the rotating arm rotates one circle, while moving the cylindrical plastics on the second limiting plate to the first limiting plate, the material transfer component moves the cylindrical plastics on the first limiting plate at equal intervals, and the distance of each movement is the distance between adjacent first limiting grooves on the same first limiting plate, realizing the correspondence between the cylindrical plastics and the clamping mechanism while completing the sequential equal-distance movement of the cylindrical plastics. Description of the Drawings

[0023] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 is a schematic diagram of the feeding mechanism structure of the present invention;

[0025] Figure 3 is a schematic diagram of the internal structure of the feeding mechanism of the present invention;

[0026] Figure 4 is a schematic diagram of the installation structure of the lifting plate of the present invention;

[0027] Figure 5 is a schematic diagram of the first structure of the material transfer mechanism of the present invention;

[0028] Figure 6 is a schematic diagram of the second structure of the material transfer mechanism of the present invention;

[0029] Figure 7 is a schematic diagram of the structure of the material transfer component of the present invention;

[0030] Figure 8 is a schematic diagram of the welding mechanism structure of the present invention;

[0031] Figure 9 is a schematic diagram of the clamping mechanism structure of the present invention.

[0032] Legend Explanation:

[0033] 1. Loading mechanism; 2. Support platform; 3. Material transfer mechanism; 4. Welding mechanism; 5. Clamping mechanism; 6. Box body; 7. Storage bin; 8. Partition board; 9. Discharge hopper; 10. First cylinder; 11. Adjustment groove; 12. U-shaped sliding seat; 13. Rod seat; 14. Guide rod; 15. Lifting plate; 16. Mounting plate; 17. Reducer; 18. First motor; 19. Transmission shaft; 20. Guide plate; 21. Rectangular guide groove; 22. Shaft seat; 23. Rotating arm; 24. Chute; 25. Slide block; 26. Roller; 27. Guide seat; 28. Slide rail; 29. Slide arm; 30. Support arm; 31. First limit plate; 32. Feeding chute; 33. First limit groove; 34. Support column; 35. Material transfer assembly; 36. Second limit plate; 37. Connecting rod; 38. Second limit groove; 39. Mounting arm; 40. First electric slide rail; 41. First electric slide block; 42. Second electric slide rail; 43. Second electric slide block; 44. Third electric slide rail; 45. Welding head; 46. Second pneumatic rod; 47. Third pneumatic rod; 48. Lifting plate; 49. Electric push rod; 50. Second motor; 51. Sleeve seat. Specific embodiments

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Specific embodiments are given below.

[0036] See Figures 1 to 9 , a cylindrical plastic welding device, including a loading mechanism 1, a support platform 2, a material transfer mechanism 3, a welding mechanism 4 and a clamping mechanism 5. A support platform 2 is installed outside the loading mechanism 1. On the support platform 2, a material transfer mechanism 3 for moving cylindrical plastics, a welding mechanism 4 for welding cylindrical plastics, and a clamping mechanism 5 for clamping and limiting cylindrical plastics are installed;

[0037] The feeding mechanism 1 includes a box body 6. Inside the box body 6, there is a storage bin 7 with a sloping bottom, and a partition plate 8 is arranged inside the storage bin 7. On the top side wall of the box body 6, there is a discharge hopper 9 with a sloping bottom. Two lifting plates 15 are slidably installed in the storage bin 7, and the top side wall of the lifting plate 15 is parallel to the slope of the storage bin 7. Adjusting grooves 11 are symmetrically and vertically opened on the side wall of the box body 6. A first cylinder 10 is vertically installed in the box body 6. The top telescopic end of the first cylinder 10 is installed with a U-shaped sliding seat 12, and both ends of the U-shaped sliding seat 12 are respectively connected to the lifting plates 15. Guide rods 14 are respectively penetrated and slidably installed at both ends of the U-shaped sliding seat 12, and both ends of the guide rod 14 are connected to the box body 6 through rod seats 13. When the first cylinder 10 works, it drives the U-shaped sliding seat 12 to move along the guide rod 14. At this time, the two lifting plates 15 move synchronously, so that the top side of the lifting plate 15 is flush with the bottom side of the storage bin 7 and the bottom side of the discharge hopper 9, and then the cylindrical plastics in the storage bin 7 are transported into the discharge hopper 9 as the lifting plate 15 moves upward;

[0038] The material transfer mechanism 3 includes a mounting plate 16 installed on the support table 2. Three first limiting plates 31 arranged in parallel are installed on the support table 2 through support columns 34. The width of the middle first limiting plate 31 is twice that of the first limiting plates 31 on both sides. A material transfer component 35 is movably installed between adjacent first limiting plates 31. The material transfer component 35 includes two second limiting plates 36 arranged in parallel, and the two second limiting plates 36 are connected by a connecting rod 37. A speed reducer 17 is installed on one side of the mounting plate 16, and the input end of the speed reducer 17 is connected to the output end of the first motor 18. A guide plate 20 is installed on the other side of the mounting plate 16. A rectangular guide groove 21 is formed in the guide plate 20, and the four corners of the rectangular guide groove 21 are all chamfered. A shaft seat 22 is installed in the rectangular guide groove 21 on the other side of the mounting plate 16. The output end of the speed reducer 17 is installed with a transmission shaft 19, and the end of the transmission shaft 19 penetrates through the shaft seat 22. A rotating arm 23 is installed at the end of the transmission shaft 19, and a sliding groove 24 is formed in the rotating arm 23. A sliding block 25 is slidably installed in the sliding groove 24. A connecting shaft is installed through the bearing inside the sliding block 25. One end of the connecting shaft is installed with a roller 26, and the roller 26 rolls along the inner wall of the rectangular guide groove 21 of the guide plate 20. The other end of the connecting shaft is connected to a sliding arm 29. A support arm 30 is installed on the sliding arm 29, and the sliding arm 29 and the support arm 30 are respectively connected to the two material transfer components 35. Slide rails 28 are installed on both the mounting plate 16 and the guide seat 27. The slide rail 28 on the mounting plate 16 is horizontally arranged, and the slide rail 28 on the guide seat 27 is vertically arranged. The guide seat 27 is slidably installed on the slide rail 28 of the mounting plate 16, and the sliding arm 29 is slidably installed on the slide rail 28 of the guide seat 27. A number of first limiting grooves 33 are equidistantly formed on the first limiting plate 31, and a blanking groove 32 is formed at the end of the first limiting plate 31. A number of second limiting grooves 38 are equidistantly formed on the second limiting plate 36. The distance between adjacent second limiting grooves 38 on the same second limiting plate 36 is the same as the distance between adjacent first limiting grooves 33 on the same first limiting plate 31. When the first motor 18 works, the speed reducer 17 adjusts the speed to drive the transmission shaft 19 to rotate, and then drives the rotating arm 23 to rotate. When the rotating arm 23 rotates, the sliding block 25 moves along the sliding groove 24, and the roller 26 rolls along the inner wall of the rectangular guide groove 21 of the guide plate 20, driving the sliding arm 29 connected by the connecting shaft to move. At this time, the sliding arm 29 moves up and down along the slide rail 28 of the guide seat 27, and the guide seat 27 moves horizontally along the slide rail 28 of the mounting plate 16, realizing the movement of the material transfer component 35. At this time, every time the rotating arm 23 rotates one circle, the material transfer component 35 moves the cylindrical plastic on the second limiting plate 36 to the first limiting plate 31, and at the same time, moves the cylindrical plastic on the first limiting plate 31 equidistantly. The distance of each movement is the distance between adjacent first limiting grooves 33 on the same first limiting plate 31, realizing the correspondence between the cylindrical plastic and the clamping mechanism 5, and at the same time, completing the sequential equidistant movement of the cylindrical plastic;

[0039] The welding mechanism 4 includes a mounting arm 39. A first electric slide rail 40 is horizontally mounted on the top of the mounting arm 39. A first electric slider 41 is slidably mounted on the first electric slide rail 40. The first electric slider 41 is connected to the end of a horizontal second electric slide rail 42, and the first electric slide rail 40 and the second electric slide rail 42 are arranged perpendicular to each other. A second electric slider 43 is slidably mounted on the second electric slide rail 42, and the second electric slider 43 is slidably mounted on a vertical third electric slide rail 44. A welding head 45 is mounted at the bottom end of the third electric slide rail 44. The first electric slider 41 slides along the first electric slide rail 40 to achieve movement in the X-axis direction. The second electric slider 43 slides along the second electric slide rail 42 to achieve movement in the Y-axis direction. At the same time, the second electric slider 43 and the third electric slide rail 44 cooperate, and the third electric slide rail 44 moves along the Z-axis direction, thereby adjusting the position of the welding head 45 at multiple angles;

[0040] The clamping mechanism 5 includes a second air pressure rod 46 and a third air pressure rod 47 mounted on the bottom side of the support table 2, and the second air pressure rod 46 and the third air pressure rod 47 are respectively located on both sides of the material transfer mechanism 3. Lifting plates 48 are mounted on the telescopic ends of the tops of the second air pressure rod 46 and the third air pressure rod 47. By the operation of the second air pressure rod 46 and the third air pressure rod 47, the lifting plates 48 are driven to lift, thereby adjusting the heights of the electric push rod 49 and the second motor 50 to correspond to the cylindrical plastics on the material transfer mechanism 3, and at the same time cooperate with the welding head 45 for welding. An electric push rod 49 is mounted on the top of one lifting plate 48, and the telescopic end of the electric push rod 49 is connected to a socket 51 by a bearing. A second motor 50 is mounted on the top of the other lifting plate 48, and the output end of the second motor 50 is connected to the other socket 51. By the operation of the electric push rod 49, one socket 51 is driven to move, thereby clamping two cylindrical plastics between the two sockets 51, and then by the operation of the second motor 50, the cylindrical plastics are driven to rotate, thereby realizing 360° full welding of the cylindrical plastics.

[0041] A working method of a cylindrical plastic welding device, and the specific operation steps of the working method are as follows:

[0042] Step 1: Place two cylindrical plastics in the storage bins 7 of the feeding mechanism 1 respectively, and separate them by a partition plate 8. At this time, the first air cylinder 10 works to drive the U-shaped sliding seat 12 to move upward along the guide rod 14. At this time, the two lifting plates 15 move upward synchronously until the top sides of the lifting plates 15 are flush with the bottom side of the discharge hopper 9. The cylindrical plastics in the storage bins 7 move upward with the lifting plates 15, are transported from the storage bins 7 to the discharge hopper 9, and roll along the discharge hopper 9 onto the two material transfer components 35, and are limited by the second limiting grooves 38 of the second limiting plates 36;

[0043] Step 2: At this time, the first motor 18 operates, the speed reducer 17 adjusts the speed to drive the transmission shaft 19 to rotate, and then drives the rotating arm 23 to rotate. When the rotating arm 23 rotates, the slider 25 moves along the chute 24, and the roller 26 rolls along the inner wall of the rectangular guide groove 21 of the guide plate 20, driving the sliding arm 29 connected by the connecting shaft to move. At this time, the sliding arm 29 moves up and down along the slide rail 28 of the guide seat 27, and the guide seat 27 moves horizontally along the slide rail 28 of the mounting plate 16, realizing the movement of the material transfer assembly 35. At this time, every time the rotating arm 23 rotates one circle, the material transfer assembly 35 moves the cylindrical plastic on the second limiting plate 36 to the first limiting plate 31, and at the same time, moves the cylindrical plastic on the first limiting plate 31 at equal intervals, and the moving interval is the distance between adjacent first limiting grooves 33 on the same first limiting plate 31, thereby realizing the sequential equal-distance movement of the cylindrical plastic;

[0044] Step 3: The second air cylinder 46 and the third air cylinder 47 drive the lifting plate 48 to move down until the sleeve seat 51 is flush with the cylindrical plastic. The electric push rod 49 operates to drive one sleeve seat 51 to move, and then clamp two cylindrical plastics between the two sleeve seats 51. At this time, the second air cylinder 46 and the third air cylinder 47 work simultaneously to drive the cylindrical plastic to move up, and the welding mechanism 4 adjusts the position of the welding head 45. Then, the second motor 50 operates to drive the cylindrical plastic to rotate, realizing the welding of the two cylindrical plastics. The welded cylindrical plastic is placed back on the first limiting plate 31 of the material transfer mechanism 3 through the clamping mechanism 5. When the cylindrical plastic moves to the blanking groove 32 of the first limiting plate 31, it falls along the blanking groove 32.

[0045] The first air cylinder 10 operates to drive the U-shaped sliding seat 12 to move up along the guide rod 14. At this time, the two lifting plates 15 move up synchronously until the top side of the lifting plate 15 is flush with the bottom side of the discharge hopper 9. The cylindrical plastic in the storage bin 7 is transported from the storage bin 7 to the discharge hopper 9 as the lifting plate 15 moves up, and rolls along the discharge hopper 9 to the two material transfer components 35 of the material transfer mechanism 3, and is limited by the second limiting groove 38 of the second limiting plate 36. After the lifting plate 15 moves down, the cylindrical plastic in the storage bin 7 automatically rolls down to supplement the top side of the lifting plate 15. By repeating the operation, the cylindrical plastic in the storage bin 7 is continuously transported to the material transfer component 35 through the discharge hopper 9, realizing the automatic feeding operation;

[0046] When the first motor 18 operates, the speed reducer 17 adjusts the speed to drive the transmission shaft 19 to rotate, and then drives the rotating arm 23 to rotate. When the rotating arm 23 rotates, the slider 25 moves along the chute 24, and the roller 26 rolls along the inner wall of the rectangular guide groove 21 of the guide plate 20, driving the sliding arm 29 connected by the connecting shaft to move. At this time, the sliding arm 29 moves up and down along the slide rail 28 of the guide seat 27, and the guide seat 27 moves horizontally along the slide rail 28 of the mounting plate 16, realizing the movement of the material transfer assembly 35. At this time, every time the rotating arm 23 rotates one circle, the material transfer assembly 35 moves the cylindrical plastic on the second limiting plate 36 to the first limiting plate 31, and at the same time, moves the cylindrical plastic on the first limiting plate 31 at equal intervals, and the interval of each movement is the same as the interval between adjacent first limiting grooves 33 on the same first limiting plate 31, realizing the correspondence between the cylindrical plastic and the clamping mechanism 5, and at the same time completing the sequential equal-distance movement of the cylindrical plastic.

[0047] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A cylindrical plastic welding device, characterized in that It includes a feeding mechanism, a support table, a material transfer mechanism, a welding mechanism and a clamping mechanism. A support table is installed outside the feeding mechanism. On the support table, there are installed a material transfer mechanism for moving cylindrical plastics, a welding mechanism for welding cylindrical plastics, and a clamping mechanism for clamping and limiting cylindrical plastics; The feeding mechanism includes a box body. Inside the box body, there is a storage bin with a sloping bottom, and a partition is arranged inside the storage bin. On the top side wall of the box body, there is a discharge hopper with a sloping bottom. Two lifting plates are slidably installed in the storage bin, and the top side walls of the lifting plates are parallel to the slope of the storage bin; The welding mechanism includes a mounting arm. A first electric slide rail is horizontally installed on the top of the mounting arm. A first electric slider is slidably installed on the first electric slide rail. The first electric slider is connected to the end of a horizontal second electric slide rail, and the first electric slide rail and the second electric slide rail are arranged perpendicular to each other. A second electric slider is slidably installed on the second electric slide rail, and the second electric slider is slidably installed on a vertical third electric slide rail. A welding head is installed at the bottom end of the third electric slide rail; The material transfer mechanism includes a mounting plate installed on the support table. Three parallel first limiting plates are installed on the support table through support columns. The width of the middle first limiting plate is twice the width of the first limiting plates on both sides. A material transfer component is movably installed between adjacent first limiting plates. The material transfer component includes two parallel second limiting plates, and the two second limiting plates are connected by a connecting rod; A reducer is installed on one side of the mounting plate, and the input end of the reducer is connected to the output end of a first motor. A guide plate is installed on the other side of the mounting plate. A rectangular guide groove is formed on the guide plate, and the four corners of the rectangular guide groove are all chamfered. A shaft seat is installed inside the rectangular guide groove on the other side of the mounting plate. The output end of the reducer is installed with a transmission shaft, and the end of the transmission shaft penetrates through the shaft seat. A rotating arm is installed at the end of the transmission shaft, and a chute is formed on the rotating arm. A slider is slidably installed in the chute. A connecting shaft is installed through the bearing inside the slider. One end of the connecting shaft is installed with a roller, and the roller rolls along the inner wall of the rectangular guide groove. The other end of the connecting shaft is connected to a sliding arm. A support arm is installed on the sliding arm, and the sliding arm and the support arm are respectively connected to two material transfer components. Slide rails are installed on both the mounting plate and the guide seat. The slide rail on the mounting plate is horizontally arranged, and the slide rail on the guide seat is vertically arranged. The guide seat is slidably installed on the slide rail of the mounting plate, and the sliding arm is slidably installed on the slide rail of the guide seat.

2. The cylindrical plastic welding device according to claim 1, wherein Adjusting grooves are symmetrically and vertically formed on the side wall of the box body. A first cylinder is vertically installed inside the box body. The telescopic end of the top of the first cylinder is installed with a U-shaped sliding seat, and both ends of the U-shaped sliding seat are respectively connected to the lifting plates. Guide rods are respectively installed through the sliding of both ends of the U-shaped sliding seat, and both ends of the guide rods are connected to the box body through rod seats.

3. A cylindrical plastic welding device according to claim 1, characterized in that, A plurality of first limiting grooves are equidistantly formed in the first limiting plate, and a blanking groove is formed at the end of the first limiting plate. A plurality of second limiting grooves are equidistantly formed in the second limiting plate, and the distance between adjacent second limiting grooves on the same second limiting plate is the same as the distance between adjacent first limiting grooves on the same first limiting plate.

4. A cylindrical plastic welding device according to claim 3, characterized in that The clamping mechanism includes a second air cylinder and a third air cylinder installed on the bottom side of the support table, and the second air cylinder and the third air cylinder are respectively located on both sides of the material transfer mechanism. The telescopic ends of the tops of the second air cylinder and the third air cylinder are both installed with lifting plates.

5. A cylindrical plastic welding device according to claim 4, characterized in that, An electric push rod is installed on the top of one of the lifting plates, and the telescopic end of the electric push rod is connected to a sleeve bearing. A second motor is installed on the top of the other lifting plate, and the output end of the second motor is connected to the other sleeve.

6. The working method of a cylindrical plastic welding device according to claim 5, characterized in that, The specific operation steps of this working method are as follows: Step 1: Place two cylindrical plastics in the storage bins of the feeding mechanism respectively, and separate them by a partition. At this time, the first air cylinder works to drive the U-shaped sliding seat to move upward along the guide rod. At this time, the two lifting plates move upward synchronously until the top sides of the lifting plates are flush with the bottom side of the discharge hopper. The cylindrical plastics in the storage bins are transported from the storage bins to the discharge hopper along with the upward movement of the lifting plates, roll along the discharge hopper onto the two material transfer components, and are limited by the second limiting grooves of the second limiting plate. Step 2: At this time, the first motor works, the speed reducer adjusts the speed to drive the transmission shaft to rotate, and then drives the rotating arm to rotate. When the rotating arm rotates, the slider moves along the sliding groove, and the roller rolls along the inner wall of the rectangular guide groove of the guide plate, driving the sliding arm connected by the connecting shaft to move. At this time, the sliding arm moves up and down along the slide rail of the guide seat, and the guide seat moves horizontally along the slide rail of the mounting plate, realizing the movement of the material transfer component. At this time, every time the rotating arm rotates one circle, when the material transfer component moves the cylindrical plastics on the second limiting plate to the first limiting plate, it moves the cylindrical plastics on the first limiting plate equidistantly, and the moving distance is the distance between adjacent first limiting grooves on the same first limiting plate, thereby realizing the sequential equidistant movement of the cylindrical plastics. Step 3: Drive the lifting plate to move downward through the second air cylinder and the third air cylinder until the sleeve is flush with the cylindrical plastics. Work the electric push rod to drive one sleeve to move, thereby clamping the two cylindrical plastics between the two sleeves. At this time, the second air cylinder and the third air cylinder work simultaneously to drive the cylindrical plastics to move upward, and the welding mechanism adjusts the position of the welding head. Then work the second motor to drive the cylindrical plastics to rotate, realizing the welding of the two cylindrical plastics. The welded cylindrical plastics are placed back on the first limiting plate of the material transfer mechanism through the clamping mechanism. When the cylindrical plastics move to the blanking groove of the first limiting plate, they fall along the blanking groove at this time.

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