Plastic bottle cap edge folding device

Abstract

The utility model discloses a plastic bottle cap edge folding device, and belongs to the technical field of edge folding devices. A feeding mechanism and a transfer mechanism of the plastic bottle cap edge folding device are connected through a material conveying pipe, and a detection structure is arranged on the material conveying pipe. The edge folding mechanism comprises a rotating shaft, a power element for driving the rotating shaft to rotate is arranged in the transmission box, a supporting disc is arranged in the middle of the rotating shaft, a chuck is arranged on the supporting disc, a clamping groove is formed in the side face of the chuck, a stop block for guiding the bottle caps into the clamping groove is arranged on the transfer mechanism, and an ejection block for supporting the bottle caps is arranged in the clamping groove. The lower part of the rotating shaft is provided with a lifting structure for driving the top block to lift, and the upper part of the rotating shaft is provided with an edge folding structure; a material guide plate is arranged below the supporting disc, and a baffle used for blocking the bottle caps and pushing the bottle caps into the material guide plate is arranged above the supporting disc. By the adoption of the plastic bottle cap edge folding device, the problems that an existing edge folding device is poor in stability, and rapid and orderly feeding cannot be achieved can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of folding devices, in particular to a folding device for a plastic bottle cap. Background Art

[0002] Plastic bottle caps are formed in one piece using an injection molding machine. In order to improve the stability and good sealing of the connection between the plastic bottle cap and the bottle body, the edge of the bottle cap needs to be bent inward and clamped on the bottle body through the folding card to improve the stability of the connection between the bottle body and the bottle cap. The methods of folding plastic bottle caps include rolling folding, die stamping folding, hot melt folding, ultrasonic welding folding, etc. Rolling folding is to form an edge with a certain angle on the edge of the bottle cap. This method is efficient, but the accuracy is relatively poor. The precision of die stamping folding is relatively high, and the folding efficiency is also relatively high. The production cost of hot melt folding and ultrasonic welding folding is relatively high. Die stamping folding is widely used in the folding of plastic bottle caps.

[0003] The existing patent CN202122011515.X discloses a bottle cap folding machine, including a base, a workbench, a support frame and a top plate, a turntable is arranged in the middle of the workbench through a first driving shaft, a positioning plate is arranged on the top end of the first driving shaft, a plurality of folding mechanisms are circumferentially arranged at the edge of the positioning plate, a guide plate is arranged above the folding mechanism, a loading disk is arranged on the workbench outside one side of the turntable through a second driving shaft, a loading channel is arranged on the workbench outside one side of the loading disk, the loading channel is connected to the loading disk, a unloading channel is arranged on the machine base outside one side of the turntable, a first divider and a second divider are respectively arranged on the bottom surface of the workbench below the turntable and the unloading disk, a motor is arranged in the base below the first divider, and a control box is arranged on one side of the support frame. The utility model aims to provide a folding machine that can automatically realize the folding operation of the bottle cap. The above patent cannot realize the orderly and rapid feeding of plastic bottle caps, and the folding mechanism folds the edges by driving the pressing block to move downward, and the moving structure is arranged at the top, which causes the center of gravity of the folding mechanism to be relatively high, affecting the stability of the folding mechanism, the stability of the movement of the pressing block, and the folding effect. Utility Model Content

[0004] The utility model aims to provide a plastic bottle cap folding device to solve the problem that the existing folding device has poor stability and cannot realize fast and orderly feeding.

[0005] To achieve the above object, the utility model provides a plastic bottle cap hemming device, which includes a feeding mechanism, a transfer mechanism and a hemming mechanism arranged in sequence. The feeding mechanism is connected to the transfer mechanism through a feeding pipe, and a detection structure is arranged on the feeding pipe; the hemming mechanism includes a rotating shaft, and a power element for driving the rotating shaft to rotate is arranged inside the transmission box. A support disk is arranged in the middle of the rotating shaft, and a chuck is arranged on the support disk. A plurality of chucks for clamping the bottle cap are evenly arranged on the side surface of the chuck. A stopper for guiding the bottle cap into the chuck is arranged on the transfer mechanism. A top block for supporting the bottle cap is arranged inside the chuck. A lifting structure for driving the top block to lift is arranged at the lower part of the rotating shaft, and a hemming structure for hemming the bottle cap is arranged at the upper part of the rotating shaft; a guide plate for guiding the bottle cap out is arranged below the support disk, and a baffle for blocking the bottle cap and pushing the bottle cap into the guide plate is arranged above the support disk.

[0006] Preferably, the feeding mechanism includes a protective cover, which is fixedly arranged above the electrical box. An eccentric disk is arranged inside the protective cover, and the eccentric disk is coaxially arranged with the protective cover. A motor for driving the eccentric disk to rotate is arranged inside the electrical box. A protective shell is coaxially arranged above the eccentric disk, and the protective shell is fixedly connected to the protective cover. A bottle cap conveying channel is arranged between the protective shell and the protective cover. The feeding pipe is located on the tangent line of the bottle cap conveying channel. An outlet for the bottle cap to pass through is arranged on the side wall of the protective shell. A partition for blocking the bottle cap is arranged at one end of the outlet close to the feeding pipe.

[0007] Preferably, the height of the outlet is less than the outer diameter of the bottle cap and greater than the height of the bottle cap, and the width of the outlet is greater than the outer diameter of the bottle cap.

[0008] Preferably, a protective rod is arranged above the bottle cap conveying channel, and the protective rod is fixedly connected to the protective cover and the protective shell; a protective rod is fixedly arranged above the feeding pipe.

[0009] Preferably, the detection structure includes a leakage hole arranged on the feeding pipe. The length of the leakage hole is greater than the outer diameter of the bottle cap. A support platform for supporting the bottle cap is arranged in the middle of the leakage hole. The length of the support platform is less than the inner diameter of the bottle cap. A blanking pipe for collecting the bottle caps falling through the leakage hole is arranged below the leakage hole.

[0010] Preferably, the transfer mechanism includes a conveying disk, and a groove for clamping the bottle cap is arranged on the conveying disk. A limit cover for protecting and supporting the bottle cap is arranged outside the conveying disk. The limit cover is fixed above the transmission box through a fixed sleeve. A motor for driving the conveying disk to rotate is arranged inside the transmission box; an opening for the bottle cap to enter the conveying disk is arranged at the connection between the limit cover and the feeding pipe. A cover plate is arranged above the opening, and the cover plate is fixed at the discharging end of the feeding pipe. A photoelectric switch for detecting the bottle cap is arranged at the discharging end of the feeding pipe.

[0011] Preferably, an arc-shaped material guiding surface is provided on the material feeding side of the clamping groove of the chuck and the groove on the conveying plate.

[0012] Preferably, the lifting structure includes an annular fixed seat arranged on the fixed plate. The fixed plate is fixed on the transmission box. The rotating shaft is rotatably connected to the fixed plate. A convex block is arranged on the fixed seat. The top surface of the convex block is connected to the top surface of the fixed seat through an inclined surface. The convex block is located between the stop block and the material guiding plate. A through hole for the top block to pass through is provided on the support plate. The top block is slidably connected to the through hole. A second connecting rod is arranged at the bottom end of the top block. A second spring is arranged between the second connecting rod and the support plate. The bottom end of the second connecting rod contacts the upper surfaces of the fixed seat and the convex block under the action of the second spring.

[0013] Preferably, the hemming structure includes a mounting plate. The mounting plate is fixedly connected to the rotating shaft. A pressing block is arranged below the mounting plate. The pressing blocks are arranged in one-to-one correspondence with the top blocks. A first connecting rod is arranged on the upper surface of the pressing block. A hole for the first connecting rod to pass through is provided on the mounting plate. The first connecting rod is slidably connected to the hole. A limiting plate is arranged at the top end of the first connecting rod. A first spring is arranged between the mounting plate and the pressing block.

[0014] Preferably, the pressing block and the first connecting rod are connected by threads.

[0015] In the plastic bottle cap hemming device of the present invention, a feeding mechanism is arranged above the electrical box. The feeding mechanism arranges the bottle caps in an orderly manner, facilitating the rapid and orderly feeding of the bottle caps. The leakage holes provided on the feeding pipe can make the bottle caps with the openings facing down fall, maintaining the unified state of the bottle caps with the openings facing up, facilitating the subsequent hemming operation. In the hemming mechanism, the lifting structure drives the bottle caps to rise and fall through the top block to complete the hemming operation. The lifting structure is arranged at the lower part, which is beneficial to improving the stability of the hemming mechanism.

[0016] Next, through the drawings and embodiments, the technical solutions of the present invention will be further described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0018] Figure 2 is a schematic structural diagram of the hemming mechanism of an embodiment of the present invention;

[0019] Figure 3 is a schematic top view structural diagram of the support plate of an embodiment of the present invention;

[0020] Figure 4 is a schematic structural diagram of the leakage hole of an embodiment of the present invention.

[0021] REFERENCE SIGNS

[0022] 1. Electric control box; 2. Protective cover; 3. Protective shell; 4. Centrifugal disc; 5. Discharge port; 6. Protective rod; 7. Feeding pipe; 8. Leakage hole; 9. Blank dropping pipe; 10. Cover plate; 11. Limit cover; 12. Fixed sleeve; 13. Conveyor disc; 14. Transmission box; 15. Support disc; 16. Chuck; 17. Rotating shaft; 18. Mounting plate; 19. Pressing block; 20. First connecting rod; 21. First spring; 22. Limit plate; 23. Jacking block; 24. Second connecting rod; 25. Card slot; 26. Second spring; 27. Fixed plate; 28. Fixed seat; 29. Convex block; 30. Stop block; 31. Baffle plate; 32. Guide plate; 33. Support rod. Detailed implementation manners

[0023] The technical solutions of the present utility model will be further described below with reference to the accompanying drawings and embodiments.

[0024] Unless otherwise defined, the technical terms or scientific terms used in the present utility model shall have the ordinary meanings understood by those of ordinary skill in the field to which the present utility model belongs. The "first", "second" and similar terms used in the present utility model do not denote any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this term cover the elements or objects listed after this term and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationships may also change accordingly.

[0025] Embodiment

[0026] As Figure 1 shown. A plastic bottle cap hemming device includes a feeding mechanism, a transfer mechanism and a hemming mechanism arranged in sequence. The feeding mechanism is used to arrange the bottle caps in a row for feeding. The feeding mechanism is connected to the transfer mechanism through the feeding pipe 7. The bottle caps arranged by the feeding mechanism enter the transfer mechanism through the feeding pipe 7, and the transfer mechanism sends the bottle caps one by one into the hemming mechanism for hemming.

[0027] The feeding mechanism includes a protective cover 2, which is fixedly arranged above the electrical box 1. Inside the protective cover 2, there is a centrifugal disc 4, which is coaxially arranged with the protective cover 2. The shaft at the center of the centrifugal disc 4 is rotatably connected to the electrical box 1 through a bearing. Inside the electrical box 1, there is a motor that drives the centrifugal disc 4 to rotate. Above the centrifugal disc 4, a protective shell 3 is coaxially arranged, and the protective shell 3 is fixedly connected to the protective cover 2 through a connecting plate. The protective shell 3 protects the bottle caps at the center of the centrifugal disc 4 to prevent the bottle caps from falling off the centrifugal disc 4. A bottle cap conveying channel is arranged between the protective shell 3 and the protective cover 2. The width of the bottle cap conveying channel is slightly larger than the outer diameter of the bottle cap, so that the bottle caps are arranged in a row on the bottle cap conveying channel. The feeding pipe 7 is located on the tangent of the bottle cap conveying channel, and the bottle caps enter the feeding pipe 7 through the bottle cap conveying channel. The centrifugal disc 4 drives the bottle caps to move on the bottle cap conveying channel.

[0028] On the side wall of the protective shell 3, there is a discharge port 5 through which the bottle caps pass. The height of the discharge port 5 is less than the outer diameter of the bottle cap and greater than the height of the bottle cap, and the width of the discharge port 5 is greater than the outer diameter of the bottle cap. The discharge port 5 allows only one bottle cap to pass through each time, and the bottle caps pass through the discharge port 5 in a lying flat manner. At one end of the discharge port 5 close to the feeding pipe 7, there is a partition plate that blocks the bottle caps, and the partition plate guides the bottle caps to the entrance of the bottle cap conveying channel.

[0029] Above the bottle cap conveying channel, there is a protective rod 6, which is fixedly connected to the protective cover 2 and the protective shell 3. Above the feeding pipe 7, there is a protective rod 6 fixedly arranged. The protective rod 6 protects the bottle caps to prevent the bottle caps from being folded during the forward pushing process, so that the bottle caps remain in a lying flat state.

[0030] As Figure 4 shown. The feeding pipe 7 is provided with a detection structure. The detection structure includes a leakage hole 8 arranged on the feeding pipe 7, and the length of the leakage hole 8 is greater than the outer diameter of the bottle cap. In the middle of the leakage hole 8, there is a support platform for supporting the bottle cap, and the length of the support platform is less than the inner diameter of the bottle cap. There are holes on both sides of the support platform, and the width of the holes is greater than the thickness of the bottle cap side wall. When the bottle cap passes through the feeding pipe 7 with the opening facing upward, the bottle cap can pass through smoothly under the action of the support platform. When the bottle cap passes through the feeding pipe 7 with the opening facing downward, the support platform cannot support the bottle cap, so that the bottle cap falls through the leakage hole 8. This ensures that the bottle caps are in a unified state with the opening facing upward for the transfer mechanism. Below the leakage hole 8, there is a blanking pipe 9 for collecting the bottle caps that fall through the leakage hole 8, and the blanking pipe 9 is fixed on the side wall of the electrical box 1.

[0031] The transfer mechanism includes a conveying tray 13, on which slots for clamping the bottle caps are evenly arranged. An upper limit cover 11 for protecting and supporting the bottle caps is arranged outside the conveying tray 13, and the upper limit cover 11 is fixed above the transmission box 14 through a fixed sleeve 12. A motor for driving the conveying tray 13 to rotate is arranged inside the transmission box 14, and the shaft of the conveying tray 13 is rotatably connected to the fixed sleeve 12 through a bearing. An opening for the bottle caps to enter the conveying tray 13 is arranged at the connection between the upper limit cover 11 and the material conveying pipe 7, and a cover plate 10 is arranged above the opening, and the cover plate 10 is fixed at the discharging end of the material conveying pipe 7. The cover plate 10 enables the bottle caps to stably enter the slots of the conveying tray 13. A photoelectric switch for detecting the bottle caps is arranged at the discharging end of the material conveying pipe 7, and the photoelectric switch adopts an existing structure according to requirements. The bottle caps in the front are pushed by the bottle caps behind, and the bottle caps are clamped into the slots of the conveying tray 13 under the action of the cover plate 10, and the bottle caps move together with the conveying tray 13 under the action of the upper limit cover 11.

[0032] As Figure 2 shown. The hemming mechanism includes a rotating shaft 17, and the rotating shaft 17 is rotatably connected to the transmission box 14 through a bearing. A power element for driving the rotating shaft 17 to rotate is arranged inside the transmission box 14. A support disc 15 is fixedly arranged in the middle of the rotating shaft 17, and a chuck 16 is fixedly arranged on the support disc 15. A plurality of slots 25 for clamping the bottle caps are evenly arranged on the side surface of the chuck 16. The conveying tray 13 is located above the support disc 15, and the conveying tray 13 and the chuck 16 are on the same horizontal plane. A stop block 30 for guiding the bottle caps on the conveying tray 13 into the slots 25 is arranged on the upper limit cover 11. The stop block 30 strips the bottle caps on the conveying tray 13 from the slots, and the bottle caps enter the slots 25 of the chuck 16 along the arc surface of the stop block 30 under the action of the conveying tray 13, realizing the transfer of the bottle caps.

[0033] As Figure 3 shown. The sizes of the slots 25 of the chuck 16 and the slots on the conveying tray 13 are slightly larger than the outer diameter of the bottle caps, so that the bottle caps can smoothly enter the slots 25 and the slots. And arc-shaped material guiding surfaces are arranged on the feeding sides of the slots 25 and the slots, facilitating the bottle caps to slide into the slots 25 and the slots.

[0034] Inside the card slot 25, there is a top block 23 for supporting the bottle cap. At the lower part of the rotating shaft 17, there is a lifting structure for driving the top block 23 to lift and lower. The lifting structure includes an annular fixed seat 28 fixedly arranged on the fixed plate 27. The fixed seat 28 is coaxially arranged with both the fixed plate 27 and the rotating shaft 17. The fixed plate 27 is fixed on the upper surface of the transmission box 14. The rotating shaft 17 is rotatably connected to the fixed plate 27 through a bearing. An annular convex block 29 is fixedly arranged on the fixed seat 28. The top surfaces at both ends of the convex block 29 are transitionally connected to the top surface of the fixed seat 28 through an inclined surface. The convex block 29 is located between the stop block 30 and the material guiding plate 32. The support plate 15 is provided with a through hole for the top block 23 to pass through. The aperture of the through hole is slightly larger than the diameter of the top block 23. The top block 23 is slidably connected to the through hole. A second connecting rod 24 is fixedly arranged at the bottom end of the top block 23. A second spring 26 is arranged between the second connecting rod 24 and the support plate 15. Both ends of the second spring 26 are fixedly connected to the support plate 15 and the bottom of the second connecting rod 24 respectively. And the second spring 26 is sleeved outside the second connecting rod 24. The bottom end of the second connecting rod 24 is a round head, which is convenient for the second connecting rod 24 to slide on the upper surfaces of the fixed ring and the convex block 29. The bottom end of the second connecting rod 24 contacts the upper surfaces of the fixed seat 28 and the convex block 29 under the action of the second spring 26.

[0035] At the upper part of the rotating shaft 17, there is a hemming structure for hemming the bottle cap. The hemming structure includes a mounting plate 18. The mounting plate 18 is fixedly connected to the rotating shaft 17 and is coaxially arranged. Below the mounting plate 18, there is a pressing block 19. The pressing block 19 is arranged corresponding to the top block 23 one by one. A first connecting rod 20 is fixedly arranged on the upper surface of the pressing block 19. The mounting plate 18 is provided with a hole for the first connecting rod 20 to pass through. The aperture of the hole is slightly larger than the diameter of the first connecting rod 20. The first connecting rod 20 is slidably connected to the hole. A limiting plate 22 is fixedly arranged at the top end of the first connecting rod 20. A first spring 21 is arranged between the mounting plate 18 and the pressing block 19. Both ends of the first spring 21 are fixedly connected to the mounting plate 18 and the top block 23 respectively. The first spring 21 is sleeved outside the first connecting rod 20. The first spring 21 applies a downward pressure to the pressing block 19. The pressing block 19 is connected to the first connecting rod 20 through a thread. After the pressing block 19 is damaged, it is convenient to replace a single pressing block 19.

[0036] Below the support plate 15, there is a material guiding plate 32 for guiding out the bottle cap. The material guiding plate 32 is fixed on the transmission box 14. Above the support plate 15, there is a baffle 31 for blocking the bottle cap and pushing the bottle cap into the material guiding plate 32. One end of the baffle 31 is fixed on the transmission box 14 through a support rod 33.

[0037] The rotating shaft 17 drives the synchronous rotation of the support disk 15 and the mounting plate 18. The bottom end of the second connecting rod 24 slides along the upper surfaces of the fixed ring and the convex block 29. When the bottle cap is transferred to the support disk 15, the top surface of the top block 23 is flush with the upper surface of the support disk 15 under the action of the second spring 26. After the bottle cap enters the card slot 25, the second connecting rod 24 slides onto the upper surface of the convex block 29 through the transition inclined surface, the second spring 26 is compressed, the second connecting rod 24 drives the pressing block 19 to rise, the pressing block 19 drives the bottle cap to rise, the top block 23 is located inside the bottle cap, and the top block 23 folds the top of the bottle cap. The second connecting rod 24 moves along with the support disk 15, the second connecting rod 24 slides onto the upper surface of the fixed ring through the transition inclined surface, the second connecting rod 24 moves downward under the action of the second spring 26, the top block 23 drives the bottle cap to move downward, and the bottle cap falls into the material guiding plate 32 under the action of the baffle 31 and is discharged through the material guiding plate 32 to complete the folding of the bottle cap.

[0038] A controller is provided inside the electrical box 1, and operation buttons are provided on the electrical box 1. The specific setting of the operation buttons can be set according to needs. The controller is electrically connected to electrical components such as motors and photoelectric switches according to needs by using existing technologies.

[0039] Therefore, by using the plastic bottle cap folding device of the present utility model, the problems of poor stability of the existing folding device and inability to achieve fast and orderly feeding can be solved.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical solutions of the present utility model, and these modifications or equivalent replacements do not make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present utility model.

Claims

1. A plastic bottle cap folding device, characterized in that: The invention comprises a feeding mechanism, a transfer mechanism and a folding mechanism which are arranged in sequence, the feeding mechanism and the transfer mechanism are connected by a feeding pipe, and a detection structure is arranged on the feeding pipe; the folding mechanism comprises a rotating shaft, a power element for driving the rotating shaft to rotate is arranged inside a transmission box, a supporting plate is arranged in the middle of the rotating shaft, a chuck is arranged on the supporting plate, a plurality of clamping grooves for clamping bottle caps are evenly arranged on the side of the chuck, a stopper for guiding the bottle caps into the clamping groove is arranged on the transfer mechanism, a top block for supporting the bottle caps is arranged inside the clamping groove, a lifting structure for driving the top block to rise and fall is arranged at the lower part of the rotating shaft, and a folding structure for folding the bottle caps is arranged at the upper part of the rotating shaft; a guide plate for guiding the bottle caps out is arranged below the supporting plate, and a baffle for blocking the bottle caps and pushing the bottle caps into the guide plate is arranged above the supporting plate.

2. A plastic bottle cap folding device according to claim 1, characterized in that: The feeding mechanism includes a protective cover, which is fixedly arranged above the electrical box, a centrifugal disk is arranged inside the protective cover, the centrifugal disk and the protective cover are coaxially arranged, a motor for driving the centrifugal disk to rotate is arranged inside the electrical box, a protective shell is coaxially arranged above the centrifugal disk, the protective shell is fixedly connected to the protective cover, a bottle cap conveying channel is arranged between the protective shell and the protective cover, the conveying pipe is located on the tangent of the bottle cap conveying channel, a discharge port for allowing the bottle cap to pass through is arranged on the side wall of the protective shell, and a partition for blocking the bottle cap is arranged at one end of the discharge port close to the conveying pipe.

3. A plastic bottle cap folding device according to claim 2, characterized in that: The height of the discharge port is smaller than the outer diameter of the bottle cap and larger than the height of the bottle cap, and the width of the discharge port is larger than the outer diameter of the bottle cap.

4. A plastic bottle cap folding device according to claim 3, characterized in that: A protection rod is arranged above the bottle cap conveying channel, and the protection rod is fixedly connected with the protection cover and the protection shell; and a protection rod is fixedly arranged above the feeding pipe.

5. A plastic bottle cap folding device according to claim 4, characterized in that: The detection structure includes a leakage hole arranged on the feeding pipe, the length of the leakage hole is greater than the outer diameter of the bottle cap, a support platform for supporting the bottle cap is arranged in the middle of the leakage hole, the length of the support platform is less than the inner diameter of the bottle cap, and a drop pipe for collecting the bottle caps falling through the leakage hole is arranged below the leakage hole.

6. A plastic bottle cap folding device according to claim 5, characterized in that: The transfer mechanism includes a conveying disk, a groove for clamping the bottle caps is provided on the conveying disk, a limit cover for protecting and supporting the bottle caps is provided on the outside of the conveying disk, the limit cover is fixed on the top of the transmission box through a fixed sleeve, and a motor for driving the conveying disk to rotate is provided inside the transmission box; an opening for allowing the bottle caps to enter the conveying disk is provided at the connection between the limit cover and the conveying pipe, a cover plate is provided above the opening, the cover plate is fixed on the discharge end of the conveying pipe, and a photoelectric switch for detecting the bottle caps is provided at the discharge end of the conveying pipe.

7. A plastic bottle cap folding device according to claim 6, characterized in that: The clamping groove of the clamping disc and the feeding side of the upper groove of the conveying disc are provided with arc-shaped material guiding surfaces.

8. A plastic bottle cap folding device according to claim 7, characterized in that: The lifting structure includes an annular fixed seat arranged on a fixed plate, the fixed plate is fixed on a transmission box, a rotating shaft is rotatably connected to the fixed plate, a protrusion is arranged on the fixed seat, a top surface of the protrusion is connected to a top surface of the fixed seat by an inclined transition connection, the protrusion is located between the stopper and the guide plate, a through hole is arranged on the support plate for the top block to pass through, the top block is slidably connected to the through hole, a second connecting rod is arranged at the bottom end of the top block, a second spring is arranged between the second connecting rod and the support plate, and the bottom end of the second connecting rod contacts with the upper surface of the fixed seat and the protrusion under the action of the second spring.

9. A plastic bottle cap folding device according to claim 8, characterized in that: The folding structure includes a mounting plate, which is fixedly connected to the rotating shaft, a pressure block is arranged below the mounting plate, the pressure block and the top block are arranged one by one, a first connecting rod is arranged on the upper surface of the pressure block, a hole is arranged on the mounting plate for the first connecting rod to pass through, the first connecting rod is slidably connected to the hole, a limiting plate is arranged on the top end of the first connecting rod, and a first spring is arranged between the mounting plate and the pressure block.

10. A plastic bottle cap folding device according to claim 9, characterized in that: The pressing block is connected to the first connecting rod via threads.

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