CN217555363U - Plastic sheet major diameter rolling machine - Google Patents

Abstract

A large-diameter plastic sheet winder comprises an underframe, a movable guide rail assembly, a frame, a push-pull driving assembly, a mounting seat assembly, a winding shaft disc assembly, a top shaft assembly, an offset adjusting assembly, a screw rod transmission assembly and a roller assembly; the four corners of the bottom frame are respectively provided with a movable guide rail assembly, the four corners of the lower part of the rack are respectively provided with a roller assembly, one end of the upper part of the rack is connected with a push-pull driving assembly, and the other end of the upper part of the rack is connected with a top shaft assembly; the mounting seat assemblies are arranged on top beams on two sides of the rack, the offset adjusting assembly is arranged on one side of the rack, and the screw rod transmission assembly is arranged below the rack; plastic sheet major diameter rolling machine, establish the rolling reel into the subassembly, after the finished product of receipts full roll, only need with whole rolling reel subassembly intercommunication finished product coiled material one lift by crane down, change again empty rolling reel subassembly put into go into continue the rolling can, practiced thrift the time cost, promoted production efficiency.

Description

Plastic sheet major diameter rolling machine

Technical Field

The utility model relates to a plastic sheet extrusion line field especially relates to a plastic sheet major diameter rolling machine.

Background

In the plastic sheet extrusion line, a winder is basically used at the tail end of the production line, and the winder is used for winding the plastic sheet into a roll so as to be packaged, transported and enter the next processing procedure. Generally, a winding machine mostly adopts an air expansion shaft form, a paper tube is sleeved on the air expansion shaft, and a double-sided adhesive tape is wound on the outer surface of the paper tube and then wound. For large-diameter plastic sheets circulated in a factory, such as IXPE and XPE foamed coiled materials, the insertion and extraction of the inflatable shaft wastes a certain time. Furthermore, because the paper tube is needed, the paper tube needs to be discarded if the use times are few, and the cost input is increased. In addition, the contact part of the double-sided adhesive tape and the plastic sheet can not be used any more, which causes waste of materials.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: in order to solve the problem that the change inflatable shaft leads to the rolling inefficiency and the easy waste of material among the prior art, the utility model provides a plastic sheet major diameter rolling machine.

The utility model provides a technical scheme that its technical problem adopted is: a large-diameter plastic sheet winder comprises an underframe, a movable guide rail assembly, a rack, a push-pull driving assembly, an installation seat assembly, a winding shaft disc assembly, a top shaft assembly, an offset adjusting assembly, a screw rod transmission assembly and a roller assembly; moving guide rail assemblies are respectively arranged at four corners of the bottom frame, roller assemblies are respectively mounted at four corners below the rack, one end above the rack is connected with a push-pull driving assembly, and the other end is connected with a top shaft assembly; the mounting seat assembly is arranged on top beams on two sides of the rack, the offset adjusting assembly is arranged on one side of the rack, and the lead screw transmission assembly is arranged below the rack.

Further, the movable guide rail assembly comprises a guide rail connecting plate, a guide rail bar, a cover plate and a side sealing plate; the guide rail strip is provided with an upper guide rail strip and a lower guide rail strip, the left end and the right end of each of the upper guide rail strip and the lower guide rail strip are respectively connected through a guide rail connecting plate, the cover plates are respectively connected with the upper part and the lower part of each of the upper guide rail strip and the lower guide rail strip, and the side surfaces of the guide rail connecting plates are connected with side sealing plates; the movable guide rail assembly is welded on four corners of the underframe through guide rail connecting plates.

Further, the roller assembly comprises a roller adjusting plate, a roller shaft, a roller body and a first deep groove ball bearing; the roller shaft is mounted on the roller adjusting plate through screws, the deep groove ball bearings are mounted inside the roller body and clamped into the clamp springs for the holes, the roller body is sleeved on the roller shaft, and the tail portion of the roller shaft is clamped into the clamp springs for the shaft.

Furthermore, one end of the roller assembly provided with the roller body is placed on the guide rail bar of the guide rail moving assembly, and the other end of the roller assembly is welded on four corners below the rack through a roller adjusting plate.

Further, the push-pull driving assembly comprises an air cylinder, an air cylinder support, a support connecting plate, a floating joint, a rotation preventing shaft, a rotation preventing support, a transition sleeve, a bearing gland, a small gland, a second deep groove ball bearing, a transmission shaft disc, a hollow shaft speed reducer, a servo motor, a speed reducer bottom plate and a bottom plate connecting plate; the air cylinder is arranged on an air cylinder support, the air cylinder support is connected above a support connecting plate, one end of the floating joint is arranged at the end part of an air cylinder lever, the other end of the floating joint is connected with an anti-rotation shaft, and the anti-rotation support is arranged on the air cylinder support and is connected with the anti-rotation shaft through a long screw; the second deep groove ball bearing is fixedly connected with the anti-rotation shaft through a small gland, is arranged in the transition sleeve and is fixedly connected with the transition sleeve through a bearing gland; the transition sleeve is connected and fixed at the end part of the transmission shaft disc, the transmission shaft disc is inserted into a shaft hole of the hollow shaft speed reducer, the hollow shaft speed reducer is installed on a speed reducer base plate, the speed reducer base plate is welded with the rack through a base plate connecting plate, and the servo motor is connected with the hollow shaft speed reducer.

Furthermore, the jacking shaft assembly comprises an adjusting seat, an adjusting support, a shaft cylinder seat, a sliding body, a jacking head, a screw rod and a first hand wheel; the adjusting seat is welded on the rack, the adjusting support is arranged on the adjusting seat, the shaft cylinder seat is installed on the adjusting support, a sliding body is arranged in the shaft cylinder seat, the sliding body is connected with the shaft cylinder seat through a jacking screw, the jacking screw is jacked in a key groove of the sliding body, one end of the sliding body is connected with a lead screw, the other end of the sliding body is connected with a jacking head, and the other end of the lead screw is connected with a first hand wheel.

Further, the mounting seat assembly comprises a reel support, a rolling base plate, a pin shaft, a roller and a clamping plate; the scroll support is welded on top beams on two sides of the rack, the rolling base plate is arranged on the scroll support, two rollers are respectively inserted into two sides of the pin shaft, and two ends of the pin shaft are arranged on the scroll support and fixed by clamping plates.

Further, the offset adjusting assembly comprises a tensioning chain wheel, a chain wheel shaft, a chain, a tensioning chain wheel seat, a protective cover and a second hand wheel; the tensioning chain wheel seat is mounted on the side face of the rack, the chain wheel shaft is arranged on the tensioning chain wheel seat, the tensioning chain wheel is mounted on the chain wheel shaft, and a hand wheel is mounted at the tail end of the chain wheel shaft; the chain is connected on the tension sprocket, and the protection casing cover is located the outside of tension sprocket and chain.

Further, the screw rod transmission assembly comprises a movable screw rod, a second chain wheel, a bearing with a seat and an end cover; the belt seat bearing is arranged below the rack, the movable screw rod is inserted into the hole of the belt seat bearing, the second chain wheel is arranged on one side of the movable screw rod and is fixed through the end cover, and the second chain wheel is connected with the tensioning chain wheel through a chain.

Furthermore, the winding shaft disc assembly comprises a winding shaft, a flange disc, a coupling disc, a shaft disc jacking screw and a lifting ring screw; the flange disc is arranged on two sides of the winding shaft, the flange disc is fixedly connected with the winding shaft through a shaft disc jacking screw, the lifting ring screw is installed on the flange disc, the shaft disc is installed at one end of the winding shaft, and the winding shaft is provided with a slot.

The utility model has the advantages that:

(1) Plastic sheet major diameter rolling machine, establish the rolling reel into the subassembly, after the finished product of receipts full roll, only need with whole rolling reel subassembly intercommunication finished product coiled material one lift by crane down, change again empty rolling reel subassembly put into go into continue the rolling can, practiced thrift the time cost, promoted production efficiency.

(2) Plastic sheet major diameter rolling machine, through mutually supporting of push-and-pull drive assembly and apical axis subassembly, conveniently fix the rolling axle subassembly and carry out the rolling when using, after rolling up the finished product, can break away from the rolling axle subassembly again fast, make things convenient for it to change.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural view of a large-diameter winder for plastic sheets according to a preferred embodiment of the present invention;

fig. 2 is a schematic view of a moving rail assembly according to a preferred embodiment of the present invention;

FIG. 3 is a schematic view of a push-pull drive assembly according to a preferred embodiment of the present invention;

FIG. 4 is a schematic view of a mount assembly according to a preferred embodiment of the present invention;

FIG. 5 is a schematic view of a wind-up reel assembly according to a preferred embodiment of the present invention;

fig. 6 is a schematic view of a jack assembly according to a preferred embodiment of the present invention;

FIG. 7 is a schematic view of an offset adjustment assembly and a lead screw drive assembly according to a preferred embodiment of the present invention;

fig. 8 is a schematic view of a roller assembly according to a preferred embodiment of the present invention;

in the figure, 1, a bottom frame, 2, a movable guide rail assembly, 21, a guide rail connecting plate, 22, a guide rail bar, 23, a cover plate, 24, a side sealing plate, 3, a frame, 4, a push-pull driving assembly, 41, a cylinder, 42, a cylinder bracket, 43, a bracket connecting plate, 44, a floating joint, 45, an anti-rotation shaft, 46, an anti-rotation bracket, 47, a transition sleeve, 48, a bearing gland, 49, a small gland, 410, a second deep groove ball bearing, 411, a transmission shaft disc, 413, a hollow shaft reducer, 414, a servo motor, 415, a reducer bottom plate, 416, a bottom plate connecting plate, 5, a mounting seat assembly, 51, a scroll support, 52, a rolling cushion plate, 53, a pin shaft, 54, a roller, 55, a clamping plate, 6, a winding shaft assembly, 61, a winding shaft, 62, flange discs, 63, coupling discs, 64, shaft disc jacking screws, 65, lifting ring screws, 66, slots, 7, jacking shaft assemblies, 71, adjusting seats, 72, adjusting supports, 73, shaft cylinder seats, 74, sliding bodies, 75, jacking heads, 76, screw rods, 77, first hand wheels, 78, jacking screws, 8, offset adjusting assemblies, 81, tensioning chain wheels, 82, chain wheel shafts, 83, chains, 84, tensioning chain wheel seats, 85, protective covers, 86, second hand wheels, 9, screw rod transmission assemblies, 91, moving screw rods, 92, second chain wheels, 93, belt seat bearings, 94, end covers, 10, roller assemblies, 101, roller adjusting plates, 102, roller shafts, 103, roller bodies, 104 and first deep groove ball bearings.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "horizontal", "top", "inner", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the term "connected" is to be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, a large-diameter plastic sheet winder comprises an underframe 1, a movable guide rail assembly 2, a frame 3, a push-pull driving assembly 4, a mounting seat assembly 5, a winding shaft assembly 6, a top shaft assembly 7, an offset adjusting assembly 8, a screw rod transmission assembly 9 and a roller assembly 10; four corners of the underframe 1 are respectively provided with a movable guide rail assembly 2, four corners below the rack 3 are respectively provided with a roller assembly 10, one end above the rack 3 is connected with a push-pull driving assembly 4, and the other end is connected with a top shaft assembly 7; the mounting seat assembly 5 is arranged on top beams on two sides of the rack 3, the offset adjusting assembly 8 is arranged on one side of the rack 3, and the screw rod transmission assembly 9 is arranged below the rack 3.

As shown in fig. 2, the moving rail assembly 2 includes a rail connecting plate 21, a rail bar 22, a cover plate 23 and a side cover plate 24; the guide rail strips 22 are provided with an upper guide rail strip and a lower guide rail strip, the left ends and the right ends of the upper guide rail strip and the lower guide rail strip 22 are respectively connected through a guide rail connecting plate 21, the cover plates 23 are respectively connected with the upper part and the lower part of the upper guide rail strip and the lower guide rail strip 22, and the side surfaces of the guide rail connecting plate 21 are connected with side sealing plates 24; the movable guide rail assembly 2 is welded on four corners of the bottom frame 1 through guide rail connecting plates 21.

As shown in fig. 8, the roller assembly 10 includes a roller adjustment plate 101, a roller shaft 102, a roller body 103, and a first deep groove ball bearing 104; the roller shaft 102 is mounted on the roller adjusting plate 101 through screws, the deep groove ball bearings are mounted inside the roller body 103 and clamped into the hole snap springs, the roller body 103 is sleeved on the roller shaft 102, and the tail of the roller shaft 102 is clamped into the shaft snap springs. One end of the roller assembly 10, which is provided with a roller body 103, is placed on the guide rail strip 22 of the movable guide rail assembly 2, and the other end is welded at four corners below the frame 3 through a roller adjusting plate 101.

As shown in fig. 3, the push-pull driving assembly 4 includes a cylinder 41, a cylinder bracket 42, a bracket connection plate 43, a floating joint 44, an anti-rotation shaft 45, an anti-rotation bracket 46, a transition sleeve 47, a bearing gland 48, a small gland 49, a second deep groove ball bearing 410, a transmission shaft disc 411, a hollow shaft reducer 413, a servo motor 414, a reducer bottom plate 415, and a bottom plate connection plate 416; the cylinder 41 is mounted on a cylinder support 42, the cylinder support 42 is connected above a support connecting plate 43, one end of the floating joint 44 is mounted at the end of a lever of the cylinder 41, the other end of the floating joint is connected with an anti-rotation shaft 45, and the anti-rotation support 46 is mounted on the cylinder support 42 and connected with the anti-rotation shaft 45 through a long screw; the second deep groove ball bearing 410 is fixedly connected with the anti-rotation shaft 45 through a small pressing cover 49, and the second deep groove ball bearing 410 is arranged in the transition sleeve 47 and is fixedly connected with the transition sleeve 47 through a bearing pressing cover 48; the transition sleeve 47 is fixedly connected to the end of the transmission shaft disc 411, the transmission shaft disc 411 is inserted into a shaft hole of the hollow shaft speed reducer 413, the hollow shaft speed reducer 413 is mounted on a speed reducer bottom plate 415, the speed reducer bottom plate 415 is welded with the frame 3 through a bottom plate connecting plate 416, and the servo motor 414 is connected with the hollow shaft speed reducer 413.

As shown in fig. 6, the top shaft assembly 7 includes an adjusting seat 71, an adjusting support 72, a shaft cylinder seat 73, a sliding body 74, a top head 75, a lead screw 76 and a first hand wheel 77; the adjusting seat 71 is welded on the rack 3, the adjusting support 72 is arranged on the adjusting seat 71, the shaft cylinder seat 73 is installed on the adjusting support 72, a sliding body 74 is arranged in the shaft cylinder seat 73, the sliding body 74 is connected with the shaft cylinder seat 73 through a jacking screw 78, the jacking screw 78 is jacked in a key groove of the sliding body 74, one end of the sliding body 74 is connected with a screw rod 76, the other end of the sliding body 74 is connected with a jacking head 75, and the other end of the screw rod 76 is connected with a first hand wheel 77.

As shown in fig. 4, the mount assembly 5 includes a reel support 51, a rolling pad 52, a pin 53, a roller 54, and a chucking plate 55; the scroll support 51 is welded on the top beam at two sides of the frame 3, the rolling backing plate 52 is arranged on the scroll support 51, two rollers 54 are respectively inserted into two sides of the pin shaft 53, and two ends of the pin shaft 53 are installed on the scroll support 51 and fixed by a clamping plate 55.

As shown in fig. 7, the offset adjustment assembly 8 includes a tension sprocket 81, a sprocket shaft 82, a chain 83, a tension sprocket seat 84, a protective cover 85, and a second sprocket 86; the tensioning chain wheel seat 84 is mounted on the side face of the frame 3, the chain wheel shaft 82 is arranged on the tensioning chain wheel seat 84, the tensioning chain wheel 81 is mounted on the chain wheel shaft 82, and a hand wheel is mounted at the tail end of the chain wheel shaft 82; the chain 83 is connected to the tension sprocket 81, and the protection cover 85 covers the tension sprocket 81 and the chain 83.

As shown in fig. 7, the screw drive assembly 9 includes a moving screw 91, a second sprocket 92, a belt bearing 93 and an end cap 94; the belt seat bearing 93 is installed below the frame 3, the moving screw 91 is inserted into a hole of the belt seat bearing 93, the second chain wheel 92 is installed at one side of the moving screw 91 and fixed by an end cover 94, and the second chain wheel 92 is connected with the tension chain wheel 81 through a chain 83.

As shown in fig. 5, the winding reel assembly 6 includes a winding reel 61, a flange disc 62, a coupling disc 63, a reel tightening screw 64 and a lifting eye screw 65; the flange disc 62 is arranged on two sides of the winding shaft 61, the flange disc 62 is fixedly connected with the winding shaft 61 through a disc jacking screw 64, the lifting ring screw 65 is arranged on the flange disc 62, the coupling disc 63 is arranged at one end of the winding shaft 61, and the winding shaft 61 is provided with a slot 66.

When in use, the winding shaft disc assemblies 6 are multiple, the fully wound finished product is lifted together with the winding shaft disc assemblies 6 and the finished coiled material, and an additional empty winding shaft disc assembly 6 is arranged to wind a new coiled material.

After the empty winding shaft assembly 6 is placed on the roller 54 of the mounting seat assembly 5 of the winding machine, the coupling disc 63 of the winding shaft assembly 6 is manually aligned with the bayonet of the transmission shaft disc 411 on the push-pull driving assembly 4, the manual valve of the air cylinder 41 is controlled by hand, the air cylinder rod of the air cylinder 41 is ejected out, and the bayonet is inserted into the hole of the coupling disc 63 to achieve the purpose of connection transmission.

And rotating the first hand wheel 77 of the ejecting shaft assembly 7, and driving the ejecting head 75 to eject out by the screw rod 76 and eject the ejecting head to the other end face of the winding shaft assembly 6.

When the plastic sheet needs to be wound, the plastic sheet is firstly inserted into the slot 66 of the winding shaft 61, the winding machine is started, and the push-pull driving assembly 4 drives the winding shaft disc assembly 6 to rotate, so that the winding purpose is realized.

When the coiled material shifts, the second hand wheel 86 of the shift adjusting assembly 8 can be rotated to drive the chain 83 to transmit to the movable screw 91 of the screw transmission assembly 9 to rotate, so that all parts installed on the whole rack machine 3, including the coiled material, move left and right relative to the bottom frame 1 together, and the purpose of correcting the shift on line is achieved.

When the coiled material is fully coiled, the manual valve of the cylinder 41 is controlled by the hand, the cylinder rod of the cylinder 41 is withdrawn, and the bayonet pin is withdrawn from the hole 63 of the coupling disc, so that the purpose of connection and separation is achieved. Then, the first hand wheel 77 of the top shaft assembly 7 is manually rotated, and the screw rod 76 drives the top head 75 to withdraw, so that the top head 75 is separated from the end face of the winding shaft assembly 6. After the coiled material is manually cut, the whole winding shaft disc assembly 6 and the finished coiled material on the winding shaft disc assembly 6 are lifted and circulated in a reciprocating mode.

In this specification, the schematic representations of the terms are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. A large-diameter plastic sheet winder is characterized by comprising an underframe (1), a movable guide rail assembly (2), a frame (3), a push-pull driving assembly (4), a mounting seat assembly (5), a winding shaft disc assembly (6), a top shaft assembly (7), an offset adjusting assembly (8), a screw rod transmission assembly (9) and a roller assembly (10); four corners of the bottom frame (1) are respectively provided with a movable guide rail assembly (2), four corners of the lower part of the rack (3) are respectively provided with a roller assembly (10), one end of the upper part of the rack (3) is connected with a push-pull driving assembly (4), and the other end of the upper part of the rack is connected with a top shaft assembly (7); the mounting seat assembly (5) is arranged on top beams on two sides of the rack (3), the offset adjusting assembly (8) is arranged on one side of the rack (3), and the screw rod transmission assembly (9) is arranged below the rack (3).

2. Plastic sheet large-diameter winder according to claim 1, characterized in that the moving rail assembly (2) comprises rail webs (21), rail bars (22), cover plates (23) and side closure plates (24); the guide rail bar (22) is provided with an upper guide rail bar and a lower guide rail bar, the left end and the right end of the upper guide rail bar (22) are connected through a guide rail connecting plate (21), the cover plate (23) is connected with the upper part and the lower part of the upper guide rail bar (22) and the lower guide rail bar (22) respectively, and the side surface of the guide rail connecting plate (21) is connected with a side sealing plate (24); the movable guide rail assembly (2) is welded on four corners of the bottom frame (1) through guide rail connecting plates (21).

3. The large-diameter plastic sheet winder according to claim 1, wherein the roller assembly (10) comprises a roller adjusting plate (101), a roller shaft (102), a roller body (103) and a first deep groove ball bearing (104); the roller shaft (102) is mounted on the roller adjusting plate (101) through screws, the deep groove ball bearings are mounted in the roller body (103), and the roller shaft (102) is sleeved with the roller body (103).

4. The plastic sheet large-diameter winding machine as claimed in claim 3, wherein one end of the roller assembly (10) provided with the roller body (103) is placed on the guide rail strip (22) of the movable guide rail assembly (2), and the other end is welded on four corners below the machine frame (3) through a roller adjusting plate (101).

5. The plastic sheet large-diameter winding machine according to claim 1, wherein the push-pull driving assembly (4) comprises a cylinder (41), a cylinder support (42), a support connecting plate (43), a floating joint (44), a rotation-preventing shaft (45), a rotation-preventing support (46), a transition sleeve (47), a bearing gland (48), a small gland (49), a second deep groove ball bearing (410), a transmission shaft disc (411), a hollow shaft speed reducer (413), a servo motor (414), a speed reducer base plate (415) and a base plate connecting plate (416); the air cylinder (41) is mounted on an air cylinder support (42), the air cylinder support (42) is connected above a support connecting plate (43), one end of the floating joint (44) is mounted at the end of a lever of the air cylinder (41), the other end of the floating joint is connected with an anti-rotation shaft (45), and the anti-rotation support (46) is mounted on the air cylinder support (42) and is connected with the anti-rotation shaft (45) through a long screw; the second deep groove ball bearing (410) is fixedly connected with the anti-rotation shaft (45) through a small gland (49), and the second deep groove ball bearing (410) is arranged in the transition sleeve (47) and is fixedly connected with the transition sleeve (47) through a bearing gland (48); transition cover (47) connection is fixed in drive shaft dish (411) tip, in drive shaft dish (411) inserted the shaft hole of hollow shaft speed reducer (413), hollow shaft speed reducer (413) are installed on speed reducer bottom plate (415), speed reducer bottom plate (415) are through bottom plate connecting plate (416) and frame (3) welding, servo motor (414) link to each other with hollow shaft speed reducer (413).

6. The large-diameter plastic sheet winder according to claim 1, wherein the mandrel assembly (7) comprises an adjusting seat (71), an adjusting support (72), a mandrel holder (73), a sliding body (74), a mandrel (75), a lead screw (76) and a first hand wheel (77); adjust seat (71) welding on frame (3), it sets up on adjusting seat (71) to adjust support (72), install on adjusting support (72) bobbin seat (73), set up slider (74) in bobbin seat (73), slider (74) link to each other with bobbin seat (73) through top tight screw (78), top tight screw (78) top is in the keyway of slider (74), lead screw (76) are connected to the one end of slider (74), top (75) are connected to the other end, the other end and first hand wheel (77) of lead screw (76) link to each other.

7. The plastic sheet large-diameter winder according to claim 1, characterized in that the mount assembly (5) comprises a reel support (51), a rolling shim plate (52), a pin (53), a roller (54) and a clamping plate (55); the reel support (51) is welded on top beams on two sides of the rack (3), the rolling base plate (52) is arranged on the reel support (51), two sides of the pin shaft (53) are respectively inserted with a roller (54), and two ends of the pin shaft (53) are installed on the reel support (51) and fixed by a clamping plate (55).

8. The plastic sheet large diameter winder according to claim 1, wherein the offset adjustment assembly (8) comprises a tension sprocket (81), a sprocket shaft (82), a chain (83), a tension sprocket seat (84), a guard (85) and a second pulley (86); the tensioning chain wheel seat (84) is installed on the side face of the rack (3), the chain wheel shaft (82) is arranged on the tensioning chain wheel seat (84), the tensioning chain wheel (81) is installed on the chain wheel shaft (82), and a hand wheel is installed at the tail end of the chain wheel shaft (82); the chain (83) is connected to the tensioning chain wheel (81), and the protective cover (85) covers the outer sides of the tensioning chain wheel (81) and the chain (83).

9. The plastic sheet large-diameter winder according to claim 1, wherein the screw drive assembly (9) comprises a moving screw (91), a second sprocket (92), a pedestal bearing (93) and an end cap (94); the belt seat bearing (93) is arranged below the rack (3), the movable screw rod (91) is inserted into a hole of the belt seat bearing (93), the second chain wheel (92) is arranged on one side of the movable screw rod (91) and fixed through an end cover (94), and the second chain wheel (92) is connected with the tensioning chain wheel (81) through a chain (83).

10. The large-diameter plastic sheet winder as claimed in claim 1, wherein the winding reel assembly (6) comprises a winding reel (61), a flange disc (62), a coupling disc (63), a reel tightening screw (64) and a lifting ring screw (65); flange disc (62) set up in the both sides of rolling axle (61), flange disc (62) are through the tight screw in reel top (64) and rolling axle (61) fixed connection, rings screw (65) are installed on flange disc (62), the one end at rolling axle (61) is installed in shaft coupling dish (63), be equipped with slot (66) on rolling axle (61).

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