Knurling device for processing disposable paper cups and use method thereof

Abstract

The present invention discloses a knurling device for processing disposable paper cups, comprising a base, a device body being fixed on the top of the base, and first through holes being opened on both sides of the inner wall of the device body. The present invention can easily remove the knurling roller from the device body for replacement by cooperating with the first through hole, rectangular hole, U-shaped block, limit groove, single-head threaded rod, first slide groove, first slider, limit block, clamping block, first rectangular block, servo motor and limit hole, that is, effectively improve the use efficiency of the device body, and can move and fix the forward and reverse motors by cooperating with the connecting block, second slide groove, clamping hole, second slider and rectangular plate, and can ensure that the U-shaped block moves vertically up and down by cooperating with the limit groove and rectangular hole, and can be fixed by sleeves on the bearings at both ends of the knurling roller by the action of the anti-slip pad.

Description

Technical Field

[0001] The invention relates to the technical field of paper cup processing, in particular to a knurling device for processing disposable paper cups and a use method thereof. Background Art

[0002] Paper cups are a kind of paper container made by mechanically processing and bonding base paper (white paperboard) made of chemical wood pulp. They have a cup-shaped appearance. Paper cups are divided into single-sided PE coated paper cups and double-sided PE coated paper cups.

[0003] In order to improve the appearance of existing disposable paper cups, knurling devices are used for knurling during paper cup processing. However, the use effect of some existing knurling devices is poor. The main reason is that the knurling rollers in the knurling roller devices are not easy to replace, which leads to a smaller use range of the knurling device, that is, reduces the use efficiency of the knurling device.

[0004] Therefore, we propose a knurling device for disposable paper cup processing and a method of using the same to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide a knurling device for processing disposable paper cups and a method of using the same, so as to solve the problem that the use effect of some knurling device bodies proposed in the above-mentioned background technology is poor. The main reason is that the knurling roller in the knurling roller device body is not easy to replace, which leads to a smaller use range of the knurling device, that is, reduces the use efficiency of the knurling device.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a knurling device for processing disposable paper cups, comprising a base, a device body is fixed on the top of the base, first through holes are opened on both sides of the inner wall of the device body, a knurling roller is arranged between the two first through holes, rectangular holes are opened on both sides of the device body, U-shaped blocks are slidably connected to the inside of the two rectangular holes, two limiting grooves are opened on the bottom of the inner wall of the two first through holes, rectangular grooves are opened on both sides of the device body, single-head threaded rods are movably penetrated through the bottom of the inner wall of the two rectangular grooves, and the bottom ends of the two single-head threaded rods are rotatably connected to the bottom of the inner wall of the two rectangular holes through bearings, first sliding grooves are opened on the rear surfaces of the two device bodies, first sliders are slidably connected to the inside of the two first sliding grooves, limiting blocks are arranged inside the two first through holes, and the bottoms of the two limiting blocks are respectively connected to the two The bottom of the first slide block is fixed, and both sides of the inner wall of the two device bodies are provided with limiting holes, and the inside of the two limiting holes are installed with clamping blocks by bolts, and the opposite sides of the two clamping blocks respectively movably penetrate the inner walls of the two first slide grooves, a connecting block is fixed on one side of the device body, and the bottom of the connecting block is provided with a second slide groove, and the insides of the two second slide grooves are slidably connected with the second slide blocks, and a rectangular plate is fixed to the bottom of the second slide block, and a forward and reverse motor is installed between the front surface and the rear surface of the rectangular plate, and servo motors are installed at the bottom of the inner walls of the two rectangular grooves, and the output ends of the two servo motors and the output ends of the forward and reverse motors are fixed with the first rectangular block, and the top of the inner wall of the second slide groove is provided with two clamping holes, and the tops of the two limiting blocks are adhesively connected with anti-slip pads, and a fixing bolt is arranged inside one of the clamping holes, and one end of the fixing bolt is threadedly connected to the top of the second slide block.

[0007] Preferably, the four limiting grooves are divided into two groups, the inner wall front surfaces of the two groups of limiting grooves are respectively connected to the inner wall rear surfaces of the two rectangular holes, and the rear surface of each U-shaped block is respectively slidably connected between the inside of each group of limiting grooves.

[0008] Preferably, the other side of one of the first rectangular blocks is slidably connected to one side of the knurled roller, and the bottoms of the other two first rectangular blocks are respectively slidably embedded in the tops of two single-start threaded rods, and the bottom ends of the two single-start threaded rods are respectively threaded through the tops of the two U-shaped blocks.

[0009] Preferably, the outer surface of the knurled roller is provided with two annular blocks, and the front surface of the device body is provided with an L-shaped hole.

[0010] Preferably, a double-headed ruler is embedded on the front surface of the device body, and a first L-shaped block is slidably connected inside the L-shaped hole.

[0011] Preferably, a second rectangular block is embedded in the front surface of the device body, and second L-shaped blocks are respectively fixed to the front surfaces of two of the second rectangular blocks.

[0012] Preferably, the bottoms of the two second L-shaped blocks are respectively fixed to the outer walls of the two circular ring blocks.

[0013] Preferably, the front surfaces of the two second L-shaped blocks are threaded with hand screws.

[0014] A method for using a knurling device for processing disposable paper cups, comprising the following steps:

[0015] S1. When the knurled roller needs to be replaced, first remove the fixing bolt from the inside of the clamping hole, then move the forward and reverse motor. At this time, the moving forward and reverse motor will drive the corresponding first rectangular block to move out of one side of the knurled roller under the cooperation of the second slider, the second slide groove and the rectangular plate. When the second slider moves to a suitable position, the second slider is fixed directly through the cooperation of another clamping hole and the fixing bolt;

[0016] S2, then start the two servo motors at the same time, and the started servo motors will drive the U-shaped block to move upwards with the cooperation of the rectangular hole and the single-threaded rod. At this time, the two U-shaped blocks that move upwards will lift the knurled roller together, and then the two card blocks are moved out from the inside of the two limit holes respectively, and then with the cooperation of the first slide groove and the first slider, the limit block is moved out from the inside of the first through hole. At this time, the moved limit block will also drive the anti-slip pad to move out from the inside of the first through hole, and then the two servo motors are reversed at the same time. At this time, under the action of the single-threaded rod, the two U-shaped blocks will drive the knurled roller to descend together. When the knurled roller moves to a suitable position, the two servo motors are turned off at the same time. At this time, the knurled roller can be directly moved out from between the insides of the two first through holes for replacement;

[0017] S3. When the size of the paper cup needs to be limited, first loosen the two hand screws, then move the two second L-shaped blocks according to the size of the paper cup and the double-headed ruler. At this time, the two moving second L-shaped blocks will drive the two first L-shaped blocks to move toward each other, and at the same time, the two moving first L-shaped blocks will respectively drive the two circular blocks to move toward each other. When the two circular blocks move to the appropriate position, directly tighten the two hand screws at the same time. At this time, with the cooperation of the second rectangular block, the two second L-shaped blocks will be squeezed and fixed. At this time, the moving paper cup on the device body will not be misplaced, that is, the quality of the paper cup after knurling is guaranteed.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. Through the cooperation of the first through hole, the rectangular hole, the U-shaped block, the limit groove, the single-threaded rod, the first slide groove, the first slider, the limit block, the clamping block, the first rectangular block, the servo motor and the limit hole, the knurled roller can be easily removed from the device body for replacement, which effectively improves the use efficiency of the device body. With the cooperation of the connecting block, the second slide groove, the clamping hole, the second slider and the rectangular plate, the forward and reverse motors can be moved and fixed. With the cooperation of the limit groove and the rectangular hole, the U-shaped block can be guaranteed to move vertically up and down. With the action of the anti-slip pad, the bearings at both ends of the knurled roller can be fixed;

[0020] 2. Through the cooperation of the circular ring block, the L-shaped hole, the double-headed ruler, the first L-shaped block, the second rectangular block, the second L-shaped block and the hand screw, the paper to be processed can be limited, that is, the use efficiency of the knurling device body is improved, that is, the quality of the paper after knurling is improved. With the cooperation of the hand screw and the second rectangular block, the second L-shaped block can be prevented from moving. Under the action of the L-shaped hole, it is convenient for the first L-shaped block to drive the circular ring block to move horizontally. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a partially cutaway stereoscopic view of a knurling device for processing disposable paper cups according to the present invention;

[0022] Figure 2 A knurling device for processing disposable paper cups according to the present invention Figure 1 The enlarged stereogram at A in the middle;

[0023] Figure 3 It is a partially cutaway stereoscopic view from another angle of a knurling device for processing disposable paper cups of the present invention;

[0024] Figure 4 It is a partially cutaway perspective view of a knurling device for processing disposable paper cups according to the present invention;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of a servo motor and a first rectangular block of a knurling device for processing disposable paper cups of the present invention;

[0026] Figure 6 A three-dimensional diagram of a knurling device for processing disposable paper cups according to the present invention

[0027] Figure 7 A knurling device for processing disposable paper cups according to the present invention Figure 6 Enlarged stereogram of point B in the middle.

[0028] In the figure:

[0029] 1. Base; 2. Device body; 3. First through hole; 4. Knurled roller; 5. Rectangular hole; 6. U-shaped block; 7. Limiting groove; 8. Single-head threaded rod; 9. First slide groove; 10. First slider; 11. Limiting block; 12. Clamping block; 13. First rectangular block; 14. Connecting block; 15. Second slide groove; 16. Clamping hole; 17. Second slider; 18. Rectangular plate; 19. Forward and reverse motor; 20. Rectangular groove; 21. Servo motor; 22. Circular ring block; 23. L-shaped hole; 24. Double-head ruler; 25. First L-shaped block; 26. Second rectangular block; 27. Second L-shaped block; 28. Thumb screw; 29. ​​Anti-skid pad; 30. Limiting hole; 31. Fixing bolt. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Reference Figure 1-7As shown: A knurling device for processing disposable paper cups, comprising a base 1, a device body 2 is fixed on the top of the base 1, first through holes 3 are opened on both sides of the inner wall of the device body 2, a knurling roller 4 is arranged between the two first through holes 3, rectangular holes 5 are opened on both sides of the device body 2, U-shaped blocks 6 are slidably connected inside the two rectangular holes 5, two limiting grooves 7 are opened on the bottom of the inner wall of the two first through holes 3, rectangular grooves 20 are opened on both sides of the device body 2, single-threaded rods 8 are movably penetrated through the bottom of the inner wall of the two rectangular grooves 20, and the bottom ends of the two single-threaded rods 8 are rotatably connected to the bottom of the inner wall of the two rectangular holes 5 through bearings, and first slide grooves 9 are opened on the rear surfaces of the two device bodies 2, and the inside of the two first slide grooves 9 The two first through holes 3 are both slidably connected with a first slider 10, and the interiors of the two first through holes 3 are both provided with a limiting block 11, and the bottoms of the two limiting blocks 11 are respectively fixed to the bottoms of the two first sliders 10, and limiting holes 30 are provided on both sides of the inner walls of the two device bodies 2, and the interiors of the two limiting holes 30 are both installed with a clamping block 12 by bolts, and the opposite sides of the two clamping blocks 12 are respectively movable through the inner walls of the two first slide grooves 9, and a connecting block 14 is fixed on one side of the device body 2, and a second slide groove 15 is provided at the bottom of the connecting block 14, and the interiors of the two second slide grooves 15 are both slidably connected with a second slider 17, and a rectangular plate 18 is fixed to the bottom of the second slider 17, and a forward and reverse motor 19 is installed between the front surface and the rear surface of the rectangular plate 18, and the two rectangular grooves 20 The bottom of the inner wall is installed with a servo motor 21, and the output ends of the two servo motors 21 and the output ends of the forward and reverse motors 19 are fixed with the first rectangular block 13. The top of the inner wall of the second slide 15 is provided with two clamping holes 16, and the tops of the two limit blocks 11 are bonded and connected with anti-skid pads 29. A fixing bolt 31 is arranged inside one of the clamping holes 16, and one end of the fixing bolt 31 is threadedly connected to the top of the second slider 17. When the knurled roller 4 needs to be replaced, the fixing bolt 31 is first taken out from the inside of the clamping hole 16, and then the forward and reverse motors 19 are moved. At this time, the moving forward and reverse motors 19 will drive one of the first rectangular blocks 13 to move horizontally under the cooperation of the second slide 15, the rectangular plate 18 and the second slider 17. When one of the first rectangular When the block 13 moves to the appropriate position, the fixing bolt 31 and the other clamping hole 16 are directly cooperated to fix the second slider 17, and then the two servo motors 21 are started at the same time. At this time, the two started servo motors 21 will respectively drive the two single-head threaded rods 8 to rotate, and the two rotating single-head threaded rods 8 will respectively drive the two U-shaped blocks 6 to move vertically upward under the cooperation of the two rectangular holes 5 and the two limiting grooves 7. When the two U-shaped blocks 6 are moved to the appropriate positions, the two servo motors 21 are paused, and then the two clamping blocks 12 are respectively moved out from the inside of the two limiting holes 30, and then, under the cooperation of the two first slide grooves 9 and the two first sliders 10, the two limiting blocks 11 are driven to move horizontally out from the inside of the two first through holes 3 respectively.At this time, the two moving limit blocks 11 will respectively drive the two anti-skid pads 29 to move out of the two first through holes 3, and then start the two servo motors 21 to reverse at the same time. At this time, the two U-shaped blocks 6 start to drive the knurled roller 4 to move vertically downward. When the knurled roller 4 moves to a suitable position, the two servo motors 21 are turned off. At this time, the knurled roller 4 is moved out of the two first through holes 3 and can be replaced.

[0032] like Figure 2 and Figure 3 As shown, the four limit grooves 7 are divided into two groups, the inner wall front surfaces of the two groups of limit grooves 7 are respectively connected with the inner wall rear surfaces of the two rectangular holes 5, and the rear surface of each U-shaped block 6 is respectively slidably connected between the inside of each group of limit grooves 7, so that the U-shaped block 6 can be driven to move vertically up and down under the cooperation of the limit grooves 7 and the rectangular holes 5.

[0033] like Figure 1 , Figure 2 and Figure 4-7 As shown, the other side of one of the first rectangular blocks 13 is slidably connected to one side of the knurled roller 4, and the bottoms of the other two first rectangular blocks 13 are slidably embedded in the tops of the two single-head threaded rods 8, respectively. The bottom ends of the two single-head threaded rods 8 are respectively threaded through the tops of the two U-shaped blocks 6, so that under the action of the first rectangular block 13, the servo motor 21 can drive the single-head threaded rod 8 to rotate, that is, the U-shaped block 6 is driven to move through the single-head threaded rod 8.

[0034] like Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, two annular blocks 22 are arranged on the outer surface of the knurled roller 4, and an L-shaped hole 23 is opened on the front surface of the device body 2, so that the first L-shaped block 25 can drive the annular block 22 to move horizontally with the cooperation of the L-shaped hole 23.

[0035] like Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, a double-headed ruler 24 is embedded in the front surface of the device body 2, and a first L-shaped block 25 is slidably connected inside the L-shaped hole 23, so that the second L-shaped block 27 can be accurately moved under the action of the double-headed ruler 24.

[0036] like Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, a second rectangular block 26 is embedded in the front surface of the device body 2, and second L-shaped blocks 27 are fixed to the front surfaces of the two second rectangular blocks 26 respectively, so that the moved second L-shaped blocks 27 can be fixed with the cooperation of the second rectangular blocks 26 and the hand screws 28.

[0037] like Figure 7 As shown, the bottoms of the two second L-shaped blocks 27 are respectively fixed to the outer walls of the two circular ring blocks 22 , so that the circular ring blocks 22 can be driven to move under the action of the second L-shaped blocks 27 .

[0038] like Figure 7 As shown, the front surfaces of the two second L-shaped blocks 27 are threaded with hand screws 28 , so that the second L-shaped blocks 27 can be fixed conveniently under the action of the hand screws 28 .

[0039] A method for using a knurling device for processing disposable paper cups, comprising the following steps:

[0040] S1. When the knurled roller 4 needs to be replaced, the fixing bolt 31 is first taken out from the inside of the clamping hole 16, and then the forward and reverse motor 19 is moved. At this time, the moving forward and reverse motor 19 will drive the corresponding first rectangular block 13 to move out of one side of the knurled roller 4 under the cooperation of the second slider 17, the second slide groove 15 and the rectangular plate 18. When the second slider 17 moves to a suitable position, the second slider 17 is fixed directly through the cooperation of another clamping hole 16 and the fixing bolt 31;

[0041] S2, then start the two servo motors 21 at the same time. The started servo motors 21 will drive the U-shaped block 6 to move up with the cooperation of the rectangular hole 5 and the single-head threaded rod 8. At this time, the two U-shaped blocks 6 that move up will lift the knurled roller 4 together, and then the two clamping blocks 12 are respectively moved out from the inside of the two limiting holes 30. After that, with the cooperation of the first slide groove 9 and the first slider 10, the limiting block 11 is moved out from the inside of the first through hole 3. At this time, the moved limiting block 11 will also drive the anti-slip pad 29 to move out from the inside of the first through hole 3. Then, the two servo motors 21 are reversed at the same time. At this time, under the action of the single-head threaded rod 8, the two U-shaped blocks 6 will drive the knurled roller 4 to descend together. When the knurled roller 4 moves to a suitable position, the two servo motors 21 are turned off at the same time. At this time, the knurled roller 4 can be directly moved out from between the insides of the two first through holes 3 for replacement;

[0042] S3. When the size of the paper cup needs to be limited, first loosen the two hand screws 28, then move the two second L-shaped blocks 27 according to the size of the paper cup and the double-headed ruler 24. At this time, the two moving second L-shaped blocks 27 will drive the two first L-shaped blocks 25 to move toward each other, and at the same time, the two moving first L-shaped blocks 25 will respectively drive the two circular blocks 22 to move toward each other. When the two circular blocks 22 move to a suitable position, directly tighten the two hand screws 28 at the same time. At this time, with the cooperation of the second rectangular block 26, the two second L-shaped blocks 27 will be squeezed and fixed, and the moving paper cup on the device body 2 will not be misplaced, that is, the quality of the paper cup after knurling is guaranteed.

[0043] In the present invention, when the knurled roller 4 needs to be replaced, the fixing bolt 31 is firstly taken out from the inside of the clamping hole 16, and then the forward and reverse motor 19 is moved. At this time, the moving forward and reverse motor 19 will drive one of the first rectangular blocks 13 to move horizontally under the cooperation of the second slide slot 15, the rectangular plate 18 and the second slider 17. When one of the first rectangular blocks 13 moves to a suitable position, the fixing bolt 31 is directly cooperated with another clamping hole 16 to fix the second slider 17, and then the two servo motors 21 are started at the same time. At this time, the two servo motors 21 started The motor 21 will drive the two single-threaded rods 8 to rotate respectively, and the two rotating single-threaded rods 8 will drive the two U-shaped blocks 6 to move vertically upward under the cooperation of the two rectangular holes 5 and the two limit grooves 7. When the two U-shaped blocks 6 move to the appropriate positions, the two servo motors 21 are paused, and then the two card blocks 12 are moved out from the inside of the two limit holes 30 respectively. Then, under the cooperation of the two first slide grooves 9 and the two first sliders 10, the two limit blocks 11 are driven to move horizontally out from the inside of the two first through holes 3 respectively. At this time, the moving The two limit blocks 11 will respectively drive the two anti-skid pads 29 to move out from the inside of the two first through holes 3, and then start the two servo motors 21 to reverse at the same time. At this time, the two U-shaped blocks 6 start to drive the knurled roller 4 to move vertically downward. When the knurled roller 4 moves to a suitable position, the two servo motors 21 are turned off. At this time, the knurled roller 4 is moved out from the inside of the two first through holes 3 and can be replaced. When it is necessary to limit the paper cups of different sizes, first loosen the two hand screws 28, and then adjust the size of the paper and the coordination of the double-headed ruler 24. , move the two second L-shaped blocks 27. At this time, the moved second L-shaped blocks 27 will drive the first L-shaped block 25 to move horizontally with the cooperation of the L-shaped hole 23. When the first L-shaped block 25 drives the circular ring block 22 to move horizontally, when the two circular ring blocks 22 are moved to the appropriate positions, directly tighten the hand screw 28. At this time, with the cooperation of the second rectangular block 26, the second L-shaped block 27 is directly squeezed and fixed, that is, the second L-shaped block 27 is fixed, that is, the use efficiency of the knurling device body 2 is effectively improved, that is, the quality of the paper after knurling is improved.

[0044] Among them, the device body 2, the servo motor 21 and the forward and reverse motor 19 are all existing technologies and will not be explained in detail here.

[0045] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A knurling device for processing disposable paper cups, comprising a base (1), characterized in that: A device body (2) is fixed on the top of the base (1), first through holes (3) are provided on both sides of the inner wall of the device body (2), a knurled roller (4) is arranged between the two first through holes (3), rectangular holes (5) are provided on both sides of the device body (2), U-shaped blocks (6) are slidably connected to the inside of the two rectangular holes (5), two limiting grooves (7) are provided on the bottom of the inner wall of the two first through holes (3), rectangular grooves (20) are provided on both sides of the device body (2), single-threaded rods (8) are movably penetrated through the bottom of the inner wall of the two rectangular grooves (20), and the bottom ends of the two single-threaded rods (8) are rotatably connected to the bottom of the inner wall of the two rectangular holes (5) through bearings, and the two A first slide groove (9) is provided on the rear surface of each of the device bodies (2), and a first slider (10) is slidably connected inside the two first slide grooves (9). A limit block (11) is provided inside the two first through holes (3), and the bottoms of the two limit blocks (11) are respectively fixed to the bottoms of the two first sliders (10). Limit holes (30) are provided on both sides of the inner walls of the two device bodies (2), and a clamping block (12) is installed inside the two limit holes (30) by bolts, and the opposite sides of the two clamping blocks (12) are movably penetrated through the inner walls of the two first slide grooves (9), and a connecting block (14) is fixed on one side of the device body (2), and a second slide block (14) is provided at the bottom. A groove (15), the interiors of the two second sliding grooves (15) are both slidably connected with second sliders (17), a rectangular plate (18) is fixed at the bottom of the second slider (17), a forward and reverse motor (19) is installed between the front surface and the rear surface of the rectangular plate (18), a servo motor (21) is installed at the bottom of the inner wall of the two rectangular grooves (20), the output ends of the two servo motors (21) and the output ends of the forward and reverse motors (19) are both fixed with a first rectangular block (13), the top of the inner wall of the second sliding groove (15) is provided with two clamping holes (16), the tops of the two limit blocks (11) are both bonded with anti-slip pads (29), one of the clamping holes (16) is provided with a fixing bolt (31), and One end of the fixing bolt (31) is threadedly connected to the top of the second slider (17), and the four limiting grooves (7) are divided into two groups. The inner wall front surfaces of the two groups of limiting grooves (7) are respectively connected to the inner wall rear surfaces of the two rectangular holes (5), and the rear surface of each U-shaped block (6) is slidably connected between the inside of each group of limiting grooves (7). The other side of one of the first rectangular blocks (13) is slidably connected to one side of the knurled roller (4), and the bottoms of the other two first rectangular blocks (13) are respectively slidably embedded in the tops of the two single-threaded rods (8). The bottom ends of the two single-threaded rods (8) are respectively threaded through the tops of the two U-shaped blocks (6). The outer surface of the knurled roller (4) is provided with two circular ring blocks (22).An L-shaped hole (23) is provided on the front surface of the device body (2), a double-headed ruler (24) is embedded on the front surface of the device body (2), a first L-shaped block (25) is slidably connected inside the L-shaped hole (23), a second rectangular block (26) is embedded on the front surface of the device body (2), a second L-shaped block (27) is fixed to the front surface of two second rectangular blocks (26), the bottoms of the two second L-shaped blocks (27) are fixed to the outer walls of the two circular blocks (22), and the front surfaces of the two second L-shaped blocks (27) are threaded with hand screws (28); When it is necessary to limit the position of paper cups with different sizes, first loosen the two hand screws (28), then move the two second L-shaped blocks (27) according to the size of the paper and the cooperation of the double-headed ruler (24). At this time, the moved second L-shaped blocks (27) will drive the first L-shaped block (25) to move horizontally with the cooperation of the L-shaped holes (23), and the first L-shaped block (25) will drive the circular ring block (22) to move horizontally. When the two circular ring blocks (22) are moved to the appropriate position, directly tighten the hand screws (28); The following steps are involved: S1. When the knurled roller (4) needs to be replaced, the fixing bolt (31) is first removed from the inside of the clamping hole (16), and then the forward and reverse motor (19) is moved. At this time, the moving forward and reverse motor (19) will drive the corresponding first rectangular block (13) to move out of one side of the knurled roller (4) under the cooperation of the second slider (17), the second slide groove (15) and the rectangular plate (18). When the second slider (17) moves to a suitable position, the second slider (17) is fixed directly through the cooperation of another clamping hole (16) and the fixing bolt (31); S2, then the two servo motors (21) are started simultaneously. The started servo motors (21) will drive the U-shaped block (6) to move upwards with the cooperation of the rectangular hole (5) and the single-head threaded rod (8). At this time, the two U-shaped blocks (6) that move upwards will lift up the knurled roller (4) together, and then the two clamping blocks (12) are respectively moved out from the inside of the two limiting holes (30). After that, with the cooperation of the first slide groove (9) and the first slider (10), the limiting block (11) is moved out from the inside of the first through hole (3). The knurled roller (4) is moved out, and the moved limit block (11) will also drive the anti-skid pad (29) to move out from the inside of the first through hole (3). Then, the two servo motors (21) are reversed at the same time. At this time, under the action of the single-head threaded rod (8), the two U-shaped blocks (6) will drive the knurled roller (4) to descend together. When the knurled roller (4) moves to a suitable position, the two servo motors (21) are turned off at the same time. At this time, the knurled roller (4) can be directly moved out from between the insides of the two first through holes (3) for replacement; S3. When it is necessary to limit the size of the paper cup, first loosen the two hand screws (28), then move the two second L-shaped blocks (27) according to the size of the paper cup and the double-headed ruler (24). At this time, the two moving second L-shaped blocks (27) will drive the two first L-shaped blocks (25) to move towards each other, and at the same time, the two moving first L-shaped blocks (25) will respectively drive the two circular blocks (22) to move towards each other. When the two circular blocks (22) move to a suitable position, directly tighten the two hand screws (28) at the same time. At this time, with the cooperation of the second rectangular block (26), the two second L-shaped blocks (27) will be squeezed and fixed. At this time, the moving paper cup on the device body (2) will not be misplaced, that is, the quality of the paper cup after knurling is guaranteed.

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