CN215592124U

CN215592124U - Automatic roll changing machine for plastic film

Info

Publication number: CN215592124U
Application number: CN202122017682.5U
Authority: CN
Inventors: 商立松; 张二浩
Original assignee: Individual
Current assignee: Shang Lisong; Zhang Erhao
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-01-21
Anticipated expiration: 2031-08-25

Abstract

The utility model provides an automatic plastic film roll changing machine, wherein a cutting knife assembly, a pressing arm assembly, a material preparing assembly, a secondary wheel assembly, a roll pressing assembly and a roll arm assembly are sequentially arranged between side plates from back to front; the transmission roller rotating shaft is connected to the middle position inside the side plate; the stock preparation assembly comprises a paper roll and a sleeve; the sleeve is fixed on the inner wall of the side plate through a bolt, the paper roll is arranged on the upper part of the sleeve, and the pressing and coiling assembly comprises a third air cylinder and a pressing arm; the third cylinder is fixed on the outer wall of the side plate through a bolt, the pressure arm rotating shaft is connected to the outer wall of the side plate, the third cylinder is connected with the pressure arm, and the winding arm assembly comprises a fourth cylinder and a winding arm; the fourth cylinder is fixed on the inner wall of the side plate through a bolt, the rolling arm rotating shaft is connected to the inner wall of the side plate, and the fourth cylinder is connected with the rolling arm. The secondary wheel assembly can automatically cut the plastic film and wind the film on the upper part of a new paper tube, so that the automatic roll changing of the plastic film is realized.

Description

Automatic roll changing machine for plastic film

Technical Field

The utility model relates to the technical field of reel changers, in particular to an automatic reel changer for plastic films.

Background

In the prior art, the roll changing machine needs manual operation, and roll changing operation is carried out in a mode of attaching adhesive tapes to a paper tube, however, the mode causes extremely low processing efficiency, seriously reduces production efficiency and enables production cost to be high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem of how to realize automatic roll changing of the plastic film.

In order to solve the technical problem, the utility model provides an automatic plastic film roll changing machine which comprises side plates which are symmetrically arranged, wherein a chain plate is arranged at the upper part of one side of each side plate, a feeding rod is arranged at the top of each chain plate, a planing tool rod is arranged at the bottom of each chain plate, and a flattening roller is arranged between the side plates, and the automatic plastic film roll changing machine is characterized in that: a cutting knife assembly, a pressing arm assembly, a material preparation assembly, a secondary wheel assembly, a pressing and rolling assembly and a rolling arm assembly are sequentially arranged between the side plates from back to front; the transmission roller rotating shaft is connected to the middle position inside the side plate; the stock preparation assembly comprises a paper roll and a sleeve; the sleeve is fixed on the inner wall of the side plate through a bolt, the paper roll is arranged on the upper part of the sleeve, and the pressing and coiling assembly comprises a third air cylinder and a pressing arm; the third cylinder is fixed on the outer wall of the side plate through a bolt, the pressure arm rotating shaft is connected to the outer wall of the side plate, the third cylinder is connected with the pressure arm, and the winding arm assembly comprises a fourth cylinder and a winding arm; the fourth cylinder is fixed on the inner wall of the side plate through a bolt, the rolling arm rotating shaft is connected to the inner wall of the side plate, and the fourth cylinder is connected with the rolling arm.

The cutting knife assembly comprises a first cylinder, a cutting knife arm, a cutting knife rod, a rodless cylinder, a duplex cylinder and a blade; the cutting knife mechanism is characterized in that the first air cylinder is fixed on the inner wall of the side plate through a bolt, the cutting knife arm rotating shaft is connected to the inner wall of the side plate, the first air cylinder is connected with the cutting knife arm, the cutting knife bar rotating shaft is connected between the cutting knife arms, the rodless air cylinder is connected to one end of the cutting knife arm through a bolt, the duplex air cylinder is connected to the outer side of the cutting knife arm through a bolt, and the blade is arranged at one end of the rodless air cylinder.

The pressure arm assembly comprises a second air cylinder, a rubber roller pressure arm and a small rubber roller; the second cylinder is fixed on the inner wall of the side plate through a bolt, the rubber roller pressing arm rotating shaft is connected inside the side plate, the second cylinder is connected with the rubber roller pressing arm, and the small rubber roller rotating shaft is connected between the rubber roller pressing arms.

The secondary wheel assembly comprises a secondary wheel plate, an L-shaped clamping block, a ratchet, an arc-shaped connecting rod, a first roller shaft, a second roller shaft and a third roller shaft; the secondary wheel plate is connected to two sides of the transmission roller in a pin mode, the L-shaped clamping block is fixed to the top end of the inner wall of the secondary wheel plate, the arc-shaped connecting rod rotating shaft is connected to the top end of the inner wall of the secondary wheel plate, the ratchet rotating shaft is connected to the inner wall of the secondary wheel plate and is respectively connected with the L-shaped clamping block and the arc-shaped connecting rod in a clamped mode, the first roller shaft and the second roller shaft are connected to the top end of the lower portion of the secondary wheel plate in a rotating mode, and the third roller shaft is connected to one end of the arc-shaped connecting rod in a pin mode.

The secondary wheel assembly comprises a secondary wheel plate, an L-shaped clamping block, a ratchet, an arc-shaped connecting rod, a first roller shaft, a second roller shaft and an air pipe; the secondary wheel plate is in pin joint with two sides of the transmission roller, the L-shaped clamping block is fixed at the top end of the inner wall of the secondary wheel plate, the arc-shaped connecting rod rotating shaft is connected to the top end of the inner wall of the secondary wheel plate, the ratchet rotating shaft is connected to the inner wall of the secondary wheel plate and is respectively connected with the L-shaped clamping block and the arc-shaped connecting rod in a clamping mode, the first roller shaft and the second roller shaft are rotatably connected to the top end of the lower portion of the secondary wheel plate, and the air pipe is in pin joint with one end of the arc-shaped connecting rod.

The secondary wheel assembly comprises a fifth cylinder, a sixth cylinder, a large arc-shaped connecting rod, a small arc-shaped connecting rod, a first roller shaft, a second roller shaft and a connecting pipe; the fifth cylinder is fixed on the inner side wall of the side plate through a bolt, the large arc-shaped connecting rod rotating shaft is connected to the inner side wall of the side plate and connected with the fifth cylinder, the sixth cylinder rotating shaft is connected to the upper portion of the large arc-shaped connecting rod, the small arc-shaped connecting rod rotating shaft is connected to one end of the large arc-shaped connecting rod and connected with the sixth cylinder, the first roller shaft and the second roller shaft are symmetrically connected to the upper portion of the small arc-shaped connecting rod, and the connecting pipe is fixed between the small arc-shaped connecting rods.

The secondary wheel assembly comprises a fifth cylinder, a sixth cylinder, a large arc-shaped connecting rod, a small arc-shaped connecting rod, a first roll shaft, an air pipe and a connecting pipe; the fifth cylinder is fixed on the inner side wall of the side plate through a bolt, the large arc-shaped connecting rod rotating shaft is connected to the inner side wall of the side plate and connected with the fifth cylinder, the sixth cylinder rotating shaft is connected to the upper portion of the large arc-shaped connecting rod, the small arc-shaped connecting rod rotating shaft is connected to one end of the large arc-shaped connecting rod and connected with the sixth cylinder, the first roller shaft is connected to one end of the upper portion of the small arc-shaped connecting rod, the air pipe is connected to the other end of the upper portion of the small arc-shaped connecting rod, and the connecting pipe is fixed between the small arc-shaped connecting rods.

The secondary wheel assembly comprises a motor, a fifth cylinder, a sixth cylinder, a large arc-shaped connecting rod, a small arc-shaped connecting rod, a first roll shaft, a connecting pipe, a straight connecting rod and a second roll shaft; the motor is fixed on the outer wall of the side plate through a bolt, the fifth cylinder is fixed on the inner wall of the side plate through a bolt, the large arc-shaped connecting rod rotating shaft is connected to the output shaft of the motor, the sixth cylinder rotating shaft is connected to the upper portion of the large arc-shaped connecting rod, the small arc-shaped connecting rod rotating shaft is connected to one end of the large arc-shaped connecting rod and connected with the sixth cylinder, the first roller shaft rotating shaft is connected to one end of the upper portion of the small arc-shaped connecting rod, the connecting pipe is fixed between the small arc-shaped connecting rods, the straight connecting rod rotating shaft is connected to the inner wall of the large arc-shaped connecting rod and connected with the fifth cylinder, and the second roller shaft rotating shaft is connected to one end of the straight connecting rod.

The secondary wheel assembly comprises a secondary wheel plate, a fifth cylinder, an arc-shaped connecting rod, a first roller shaft, a second roller shaft and a third roller shaft; the secondary wheel plate is connected to two sides of the transmission roller in a pin mode, the fifth air cylinder is fixed to the top end of the inner wall of the secondary wheel plate, the arc-shaped connecting rod rotating shaft is connected to the top end of the inner wall of the secondary wheel plate, the first roller shaft and the second roller shaft are connected to the top end of the lower portion of the secondary wheel plate in a rotating mode, and the third roller shaft is connected to one end of the arc-shaped connecting rod in a pin mode.

The secondary wheel assembly comprises a secondary wheel plate, a fifth cylinder, an arc-shaped connecting rod, a first roller shaft, a second roller shaft and an air pipe; the secondary wheel plate is in pin joint with two sides of the transmission roller, the fifth cylinder is fixed at the top end of the inner wall of the secondary wheel plate, the arc-shaped connecting rod rotating shaft is connected to the top end of the inner wall of the secondary wheel plate, the first roller shaft and the second roller shaft are in rotating connection with the top end of the lower portion of the secondary wheel plate, and the air pipe is in pin joint with one end of the arc-shaped connecting rod.

Because the secondary wheel assembly is added in the roll changing machine, the secondary wheel assembly can automatically cut the plastic film and wind the film on the upper part of a new paper tube, thereby realizing the automatic roll changing of the plastic film.

Drawings

Fig. 1 is a schematic view of the overall structure of an automatic plastic film roll changer.

Fig. 2 is a partial structural schematic diagram of an automatic plastic film roll changing machine.

Fig. 3 is a sectional view showing the whole structure of an automatic reel changer for plastic films.

Fig. 4 is a schematic view of a secondary wheel assembly model 1 of an automatic plastic film rewinding machine.

Fig. 5 is a schematic view of a secondary wheel assembly model 2 of an automatic plastic film rewinding machine.

Fig. 6 is a schematic view of a secondary wheel assembly model 3 of an automatic plastic film rewinding machine.

Fig. 7 is a schematic view of a secondary wheel assembly model 4 of an automatic plastic film rewinding machine.

Fig. 8 is a schematic view of a sub-wheel assembly model 5 of an automatic plastic film rewinding machine.

In the figure: 1. a side plate; 2. a link plate; 3. a feed bar; 4. planing a cutter rod; 5. flattening rollers; 6. a transmission roller; 7. a paper roll; 8. a sleeve; 9. a third cylinder; 10. pressing the arm; 11. a fourth cylinder; 12. a roll arm; 13. a first cylinder; 14. a cutter arm; 15. cutting the cutter bar; 16. a rodless cylinder; 17. a duplex cylinder; 18. a blade; 19. a second cylinder; 20. a rubber roller pressing arm; 21. a small rubber roller; 22. a secondary wheel plate; 23. an L-shaped fixture block; 24. a ratchet; 25. an arc-shaped connecting rod; 26. a first roller shaft; 27. a second roller shaft; 28. a third roller shaft; 29. an air tube; 30. a fifth cylinder; 31. a sixth cylinder; 32. a large arc-shaped connecting rod; 33. a small arc-shaped connecting rod; 34. a connecting pipe; 35. a motor; 36. a straight connecting rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The specific implementation mode is as follows: with reference to fig. 1-8, including the curb plate 1 that the symmetry set up, one side upper portion of curb plate 1 is provided with chain joint board 2, and 2 tops of chain joint board are provided with feed rod 3, and 2 bottoms of chain joint board are provided with planer tool pole 4, be provided with nip roll 5, its characterized in that between curb plate 1: a cutting knife assembly, a pressing arm assembly, a material preparation assembly, a turntable assembly, a pressing and rolling assembly and a rolling arm assembly are sequentially arranged between the side plates 1 from back to front; the transmission roller 6 is connected with the central position in the side plate 1 through a rotating shaft; the stock preparation assembly comprises a paper roll 7 and a sleeve 8; the sleeve 8 is fixed on the inner wall of the side plate 1 through a bolt, the paper roller 7 is arranged on the upper portion of the sleeve 8, and the pressing and rolling assembly comprises a third air cylinder 9 and a pressing arm 10; the third cylinder 9 is fixed on the outer wall of the side plate 1 through a bolt, the rotating shaft of the pressure arm 10 is connected to the outer wall of the side plate 1, the third cylinder 9 is connected with the pressure arm 10, and the rolling arm assembly comprises a fourth cylinder 11 and a rolling arm 12; the fourth cylinder 11 is fixed on the inner wall of the side plate 1 through a bolt, the rotating shaft of the rolling arm 12 is connected on the inner wall of the side plate 1, and the fourth cylinder 11 is connected with the rolling arm 12; the cutting knife assembly comprises a first air cylinder 13, a cutting knife arm 14, a cutting knife rod 15, a rodless air cylinder 16, a duplex air cylinder 17 and a blade 18; the first cylinder 13 is fixed on the inner wall of the side plate 1 through bolts, the cutter arm 14 is connected to the inner wall of the side plate 1 in a rotating mode, the first cylinder 13 is connected with the cutter arm 14, the cutter bar 15 is connected between the cutter arms 14 in a rotating mode, the rodless cylinder 16 is connected to one end of the cutter arm 14 in a bolt mode, the duplex cylinder 17 is connected to the outer side of the cutter arm 14 in a bolt mode, and the blade 18 is arranged at one end of the rodless cylinder 16; the pressure arm assembly comprises a second air cylinder 19, a rubber roller pressure arm 20 and a small rubber roller 21; the second cylinder 19 is fixed on the inner wall of the side plate 1 through a bolt, the rotating shaft of the rubber roller pressing arm 20 is connected to the inner part of the side plate 1, the second cylinder 19 is connected with the rubber roller pressing arm 20, and the rotating shaft of the small rubber roller 21 is connected between the rubber roller pressing arms 20; the secondary wheel assembly comprises a secondary wheel plate 22, an L-shaped fixture block 23, a ratchet 24, an arc-shaped connecting rod 25, a first roller shaft 26, a second roller shaft 27 and a third roller shaft 28; the secondary wheel plate 22 is in pin joint with two sides of the transmission roller 6, the L-shaped fixture block 23 is fixed at the top end of the inner wall of the secondary wheel plate 22, the arc-shaped connecting rod 25 is connected with the top end of the inner wall of the secondary wheel plate 22 through a rotating shaft, the ratchet 24 is connected with the inner wall of the secondary wheel plate 22 through a rotating shaft and is respectively in clamping joint with the L-shaped fixture block 23 and the arc-shaped connecting rod 25, the first roller shaft 26 and the second roller shaft 27 are in rotating connection with the top end of the lower part of the secondary wheel plate 22, and the third roller shaft 28 is in pin joint with one end of the arc-shaped connecting rod 25; the secondary wheel assembly comprises a secondary wheel plate 22, an L-shaped fixture block 23, a ratchet 24, an arc-shaped connecting rod 25, a first roller shaft 26, a second roller shaft 27 and an air pipe 29; the secondary wheel plate 22 is in pin joint with two sides of the transmission roller 6, the L-shaped fixture block 23 is fixed at the top end of the inner wall of the secondary wheel plate 22, the arc-shaped connecting rod 25 is connected with the top end of the inner wall of the secondary wheel plate 22 in a rotating shaft manner, the ratchet 24 is connected with the inner wall of the secondary wheel plate 22 in a rotating shaft manner and is respectively in clamping joint with the L-shaped fixture block 23 and the arc-shaped connecting rod 25, the first roller shaft 26 and the second roller shaft 27 are in rotating connection with the top end of the lower part of the secondary wheel plate 22, and the air pipe 29 is in pin joint with one end of the arc-shaped connecting rod 25; the secondary wheel assembly comprises a fifth cylinder 30, a sixth cylinder 31, a large arc-shaped connecting rod 32, a small arc-shaped connecting rod 33, a first roller shaft 26, a second roller shaft 27 and a connecting pipe 34; the fifth cylinder 30 is fixed on the inner wall of the side plate 1 through a bolt, the large arc-shaped connecting rod 32 is connected to the inner wall of the side plate 1 in a rotating shaft manner and is connected with the fifth cylinder 30, the sixth cylinder 31 is connected to the upper part of the large arc-shaped connecting rod 32 in a rotating shaft manner, the small arc-shaped connecting rod 33 is connected to one end of the large arc-shaped connecting rod 32 in a rotating shaft manner and is connected with the sixth cylinder 31, the first roller shaft 26 and the second roller shaft 27 are symmetrically connected to the upper part of the small arc-shaped connecting rod 33 in a rotating shaft manner, and the connecting pipe 34 is fixed between the small arc-shaped connecting rods 33; the secondary wheel assembly comprises a fifth cylinder 30, a sixth cylinder 31, a large arc-shaped connecting rod 32, a small arc-shaped connecting rod 33, a first roller shaft 26, an air pipe 29 and a connecting pipe 34; the fifth cylinder 30 is fixed on the inner wall of the side plate 1 through a bolt, the large arc-shaped connecting rod 32 is connected to the inner wall of the side plate 1 in a rotating shaft manner and is connected with the fifth cylinder 30, the sixth cylinder 31 is connected to the upper part of the large arc-shaped connecting rod 32 in a rotating shaft manner, the small arc-shaped connecting rod 33 is connected to one end of the large arc-shaped connecting rod 32 in a rotating shaft manner and is connected with the sixth cylinder 31, the first roll shaft 26 is connected to one end of the upper part of the small arc-shaped connecting rod 33 in a rotating shaft manner, the air pipe 29 is connected to the other end of the upper part of the small arc-shaped connecting rod 33, and the connecting pipe 34 is fixed between the small arc-shaped connecting rods 33; the secondary wheel assembly comprises a motor 35, a fifth cylinder 30, a sixth cylinder 31, a large arc-shaped connecting rod 32, a small arc-shaped connecting rod 33, a first roller shaft 26, a connecting pipe 34, a straight connecting rod 36 and a second roller shaft 27; the motor 35 is fixed on the outer wall of the side plate 1 through bolts, the fifth cylinder 30 is fixed on the inner wall of the side plate 1 through bolts, the rotating shaft of the large arc-shaped connecting rod 32 is connected to the output shaft of the motor 35, the rotating shaft of the sixth cylinder 31 is connected to the upper part of the large arc-shaped connecting rod 32, the rotating shaft of the small arc-shaped connecting rod 33 is connected to one end of the large arc-shaped connecting rod 32 and is connected with the sixth cylinder 31, the rotating shaft of the first roll shaft 26 is connected to one end of the upper part of the small arc-shaped connecting rod 33, the connecting pipe 34 is fixed between the small arc-shaped connecting rods 33, the rotating shaft of the straight connecting rod 36 is connected to the inner wall of the large arc-shaped connecting rod 32 and is connected with the fifth cylinder 30, and the rotating shaft of the second roll shaft 27 is connected to one end of the straight connecting rod 36; the secondary wheel assembly comprises a secondary wheel plate 22, a fifth air cylinder 30, an arc-shaped connecting rod 25, a first roller shaft 26, a second roller shaft 27 and a third roller shaft 28; the secondary wheel plate 22 is in pin joint with two sides of the transmission roller 6, the fifth air cylinder 30 is fixed at the top end of the inner wall of the secondary wheel plate 22, the arc-shaped connecting rod 25 is connected with the top end of the inner wall of the secondary wheel plate 22 in a rotating way, the first roller shaft 26 and the second roller shaft 27 are in rotating connection with the top end of the lower part of the secondary wheel plate 22, and the third roller shaft 28 is in pin joint with one end of the arc-shaped connecting rod 25; the secondary wheel assembly comprises a secondary wheel plate 22, a fifth cylinder 30, an arc-shaped connecting rod 25, a first roller shaft 26, a second roller shaft 27 and an air pipe 29; the secondary wheel plate 22 is in pin joint with two sides of the transmission roller 6, the fifth air cylinder 30 is fixed at the top end of the inner wall of the secondary wheel plate 22, the rotating shaft of the arc-shaped connecting rod 25 is connected with the top end of the inner wall of the secondary wheel plate 22, the first roller shaft 26 and the second roller shaft 27 are rotatably connected with the top end of the lower part of the secondary wheel plate 22, and the air pipe 29 is in pin joint with one end of the arc-shaped connecting rod 25.

The using method of the utility model is as follows: plastic film loops through the feed rod, the planer tool pole, nip roll 5 then receives transmission roller 6 upper portion around, then place empty paper roll 7 and sleeve 8 assembly back in 1 upper portion of curb plate, then promote sleeve 8 through duplex cylinder 17 and roll along 1 upper surface of curb plate, time wheel plate 22 begins to rotate this moment, go into the recess of time wheel plate 22 until sleeve 8 card, sleeve 8 can contact with L shape fixture block 23, and then promote the lower extreme of L shape fixture block 23, the upper end of L shape fixture block 23 then can swing, 24 anticlockwise rotations of drive ratchet, along with the rotation of ratchet 24, arc connecting rod 25 has just lost the pressure that comes from ratchet 24, arc connecting rod 25 can clockwise rotation make third roller 28 laminate with paper roll 7, and plastic film's motion orbit does: passing between the driving roller 6 and the paper roller 7, then passing between the paper roller 7 and the third roller 28, then passing through the upper surfaces of the second roller 27 and the first roller 26, at which time the first air cylinder 13 pushes the cutter arm 14 to move forward, and the rodless air cylinder 16 drives the blade 18 to rapidly reciprocate between the second roller 27 and the third roller 28 to cut off the plastic film, the cut-off position of the plastic film is formed by cooperation of the L-shaped fixture 23, the ratchet 24 and the arc-shaped connecting rod 25, and by cooperation of the first roller 26, the second roller 27 and the third roller 28, a wrapping of no less than 3/4 arc is formed around the paper roller 7, so that the cut-off position of the plastic film is wound on the upper portion of the paper roller 7, and then the secondary wheel plate 22 continues to rotate to enable the sleeve 8 of the paper roller 7 to fall into the groove in the winding arm 12, and at which time the outer surface of the paper roller 7 is still in surface contact with the driving roller 6, thereby continue the winding operation, treat this paper roll 7 winding completion back, third cylinder 9 promotes pressure arm 10 and rotates to make paper roll 7 fall into the inside recess of book arm 12, and new paper roll 7 then places on curb plate 1 upper portion with sleeve 8 assembly back, repeat above-mentioned step, treat that blade 18 cuts the back that finishes, fourth cylinder 11 then promotes book arm 12, take away from this equipment with the paper roll 7 that finishes winding, and this application has still designed many sets of secondary wheel subassemblies, its theory of operation is unanimous basically, do not do too much repeated here.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides an automatic machine of book that changes of plastic film, is provided with chain joint board (2) including curb plate (1) that the symmetry set up, one side upper portion of curb plate (1), and chain joint board (2) top is provided with feed ram (3), and chain joint board (2) bottom is provided with planer tool pole (4), be provided with nip roll (5), its characterized in that between curb plate (1): a cutting knife assembly, a pressing arm assembly, a material preparation assembly, a secondary wheel assembly, a pressing and rolling assembly and a rolling arm assembly are sequentially arranged between the side plates (1) from back to front; the rotating shaft of the transmission roller (6) is connected to the central position inside the side plate (1); the stock preparation assembly comprises a paper roll (7) and a sleeve (8); the sleeve (8) is fixed on the inner wall of the side plate (1) through a bolt, the paper roll (7) is arranged on the upper portion of the sleeve (8), and the pressing and rolling assembly comprises a third air cylinder (9) and a pressing arm (10); the third cylinder (9) is fixed on the outer wall of the side plate (1) through a bolt, the rotating shaft of the pressure arm (10) is connected to the outer wall of the side plate (1), the third cylinder (9) is connected with the pressure arm (10), and the rolling arm assembly comprises a fourth cylinder (11) and a rolling arm (12); the fourth cylinder (11) is fixed on the inner wall of the side plate (1) through a bolt, the rotating shaft of the roll arm (12) is connected on the inner wall of the side plate (1), and the fourth cylinder (11) is connected with the roll arm (12).

2. The automatic rewinding machine for plastic films according to claim 1, characterized in that: the cutting knife assembly comprises a first air cylinder (13), a cutting knife arm (14), a cutting knife rod (15), a rodless air cylinder (16), a duplex air cylinder (17) and a blade (18); first cylinder (13) are fixed in curb plate (1) inner wall through the bolt, cutter arm (14) pivot is connected in curb plate (1) inner wall, first cylinder (13) are connected with cutter arm (14), cutter pole (15) pivot is connected between cutter arm (14), rodless cylinder (16) bolted connection is in cutter arm (14) one end, duplex cylinder (17) bolted connection is in the cutter arm (14) outside, blade (18) set up in rodless cylinder (16) one end.

3. The automatic rewinding machine for plastic films according to claim 1, characterized in that: the pressure arm assembly comprises a second air cylinder (19), a rubber roller pressure arm (20) and a small rubber roller (21); the second cylinder (19) is fixed on the inner wall of the side plate (1) through a bolt, the rotating shaft of the rubber roll pressing arm (20) is connected to the inner part of the side plate (1), the second cylinder (19) is connected with the rubber roll pressing arm (20), and the rotating shaft of the small rubber roll (21) is connected between the rubber roll pressing arms (20).

4. The automatic rewinding machine for plastic films according to claim 1, characterized in that: the secondary wheel assembly comprises a secondary wheel plate (22), an L-shaped fixture block (23), a ratchet (24), an arc-shaped connecting rod (25), a first roller shaft (26), a second roller shaft (27) and a third roller shaft (28); inferior wheel board (22) pin joint in transmission roller (6) both sides, L shape fixture block (23) are fixed in inferior wheel board (22) inner wall top, arc connecting rod (25) pivot is connected in inferior wheel board (22) inner wall top, ratchet (24) pivot is connected in inferior wheel board (22) inner wall and respectively with L shape fixture block (23) and arc connecting rod (25) joint, first roller (26) and second roller (27) rotate to be connected in inferior wheel board (22) lower part top, third roller (28) pin joint in arc connecting rod (25) one end.

5. The automatic rewinding machine for plastic films according to claim 1, characterized in that: the secondary wheel assembly comprises a secondary wheel plate (22), an L-shaped fixture block (23), a ratchet (24), an arc-shaped connecting rod (25), a first roller shaft (26), a second roller shaft (27) and an air pipe (29); inferior wheel board (22) pin joint in transmission roller (6) both sides, L shape fixture block (23) are fixed in inferior wheel board (22) inner wall top, arc connecting rod (25) pivot is connected in inferior wheel board (22) inner wall top, ratchet (24) pivot is connected in inferior wheel board (22) inner wall and respectively with L shape fixture block (23) and arc connecting rod (25) joint, first roller (26) and second roller (27) rotate to be connected in inferior wheel board (22) lower part top, trachea (29) pin joint in arc connecting rod (25) one end.

6. The automatic rewinding machine for plastic films according to claim 1, characterized in that: the secondary wheel assembly comprises a fifth cylinder (30), a sixth cylinder (31), a large arc-shaped connecting rod (32), a small arc-shaped connecting rod (33), a first roller shaft (26), a second roller shaft (27) and a connecting pipe (34); fifth cylinder (30) are fixed in on curb plate (1) inner wall through the bolt, big arc connecting rod (32) pivot is connected on curb plate (1) inner wall and is connected with fifth cylinder (30), sixth cylinder (31) pivot is connected in big arc connecting rod (32) upper portion, little arc connecting rod (33) pivot is connected in big arc connecting rod (32) one end and is connected with sixth cylinder (31), first roller (26) and second roller (27) symmetry pivot are connected in little arc connecting rod (33) upper portion, connecting pipe (34) are fixed in between little arc connecting rod (33).

7. The automatic rewinding machine for plastic films according to claim 1, characterized in that: the secondary wheel assembly comprises a fifth cylinder (30), a sixth cylinder (31), a large arc-shaped connecting rod (32), a small arc-shaped connecting rod (33), a first roller shaft (26), an air pipe (29) and a connecting pipe (34); fifth cylinder (30) are fixed in on curb plate (1) inner wall through the bolt, big arc connecting rod (32) pivot is connected on curb plate (1) inner wall and is connected with fifth cylinder (30), sixth cylinder (31) pivot is connected in big arc connecting rod (32) upper portion, little arc connecting rod (33) pivot is connected in big arc connecting rod (32) one end and is connected with sixth cylinder (31), first roller (26) pivot is connected in little arc connecting rod (33) upper portion one end, trachea (29) are connected in little arc connecting rod (33) upper portion other end, connecting pipe (34) are fixed in between little arc connecting rod (33).

8. The automatic rewinding machine for plastic films according to claim 1, characterized in that: the secondary wheel assembly comprises a motor (35), a fifth cylinder (30), a sixth cylinder (31), a large arc-shaped connecting rod (32), a small arc-shaped connecting rod (33), a first roller shaft (26), a connecting pipe (34), a straight connecting rod (36) and a second roller shaft (27); motor (35) are fixed in on curb plate (1) outer wall through the bolt, fifth cylinder (30) are fixed in on curb plate (1) inner wall through the bolt, big arc connecting rod (32) pivot is connected on motor (35) output shaft, sixth cylinder (31) pivot is connected in big arc connecting rod (32) upper portion, little arc connecting rod (33) pivot is connected in big arc connecting rod (32) one end and is connected with sixth cylinder (31), first roller (26) pivot is connected in little arc connecting rod (33) upper portion one end, connecting pipe (34) are fixed in between little arc connecting rod (33), straight connecting rod (36) pivot is connected on big arc connecting rod (32) inner wall and is connected with fifth cylinder (30), second roller (27) pivot is connected in straight connecting rod (36) one end.

9. The automatic rewinding machine for plastic films according to claim 1, characterized in that: the secondary wheel assembly comprises a secondary wheel plate (22), a fifth cylinder (30), an arc-shaped connecting rod (25), a first roller shaft (26), a second roller shaft (27) and a third roller shaft (28); inferior wheel board (22) pin joint in drive roller (6) both sides, fifth cylinder (30) are fixed in inferior wheel board (22) inner wall top, arc connecting rod (25) pivot is connected in inferior wheel board (22) inner wall top, first roller (26) and second roller (27) rotate and are connected in inferior wheel board (22) lower part top, third roller (28) pin joint in arc connecting rod one end.

10. The automatic rewinding machine for plastic films according to claim 1, characterized in that: the secondary wheel assembly comprises a secondary wheel plate (22), a fifth cylinder (30), an arc-shaped connecting rod (25), a first roller shaft (26), a second roller shaft (27) and an air pipe (29); inferior wheel board (22) pin joint in transmission roller (6) both sides, fifth cylinder (30) are fixed in inferior wheel board (22) inner wall top, arc connecting rod (25) pivot is connected in inferior wheel board (22) inner wall top, first roller (26) and second roller (27) rotate and are connected in inferior wheel board (22) lower part top, trachea (29) pin joint in arc connecting rod (25) one end.