CN219362729U - Winding machine for PVB film - Google Patents

Abstract

The utility model discloses a winding machine for PVB films, which comprises a workbench, a sliding block and a height adjusting mechanism, wherein the sliding block is arranged on the workbench; a working table: the utility model provides a PVB film winding machine, including the upper surface, the left and right sides both ends of its upper surface are all fixedly connected with mount pad, the rotation inslot that relative medial surface rear side symmetry was seted up of mount pad all rotates and is connected with the rolling disc, the equal fixedly connected with first mount pad of relative medial surface lower extreme of rolling disc, the relative medial surface upper end of rolling disc all has first spacing seat through bolted connection, the lower surface of first spacing seat contacts with vertical adjacent first mount pad respectively, the equal threaded connection in upper surface middle part of first spacing seat has hexagon socket head cap screw one, this a PVB film winding machine for PVB film, can flatten to different thickness fast and stable, prevent to appear the fold in the winding process, can carry out tension adjustment to the PVB film of rolling, guarantee that the straightness of PVB film, winding elasticity, appearance and material performance etc. reach standard requirement.

Description

Winding machine for PVB film

Technical Field

The utility model relates to the technical field of winders, in particular to a winder for PVB films.

Background

Polyvinyl butyral (Polyvinyl Butyral, PVB for short) is prepared fromPolyvinyl alcoholAnd (3) withButyraldehyde (butyraldehyde)Products condensed under acid catalysis, because PVB molecules contain longer branchesThe PVB film winding machine has the advantages that the PVB film winding machine has good flexibility, the PVB film winding machine is used for winding PVB films, the existing PVB film winding machine is used for flattening PVB films in opposite directions by using an electric push rod or a hydraulic column to drive two flattening rollers to flatten PVB films, wrinkles are prevented, the PVB films are wound by driving a PVB film winding shaft to rotate, and the amplitude of the flattening rollers is quite large in the relative deviation or adjustment process when the PVB films are wound by using the electric push rod or the hydraulic column to influence the winding efficiency of the PVB films.

Disclosure of Invention

The technical problem to be solved by the utility model is to overcome the existing defects, and provide the winding machine for PVB films, which can rapidly and stably flatten PVB films with different thicknesses, prevent wrinkles in the winding process, can perform tension adjustment on the wound PVB films, ensure that the flatness, winding tightness, appearance, material performance and the like of the PVB films meet standard requirements, and can effectively solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a winding machine for PVB film comprises a workbench, a sliding block and a height adjusting mechanism;

a working table: the left end and the right end of the upper surface of the workbench are fixedly connected with mounting tables, rotating discs are rotationally connected in rotating grooves symmetrically formed in the rear sides of the opposite inner sides of the mounting tables, the lower ends of the opposite inner sides of the rotating discs are fixedly connected with first mounting seats, the upper ends of the opposite inner sides of the rotating discs are connected with first limit seats through bolts, the lower surfaces of the first limit seats are respectively contacted with vertically adjacent first mounting seats, the middle parts of the upper surfaces of the first limit seats are respectively connected with inner hexagon bolts I in a threaded manner, a second motor is arranged at the inner upper end of the mounting table on the right side through a support plate, an output shaft of the second motor is fixedly connected with the rotating discs on the right side, and four corners of the lower surface of the workbench are fixedly connected with supporting feet;

height adjusting mechanism: which is arranged on the front side of the upper surface of the workbench,

wherein: still include control switch group, control switch group sets up in the leading flank of the mount table on right side, and the external power source is connected to control switch group's input electricity, and the output of control switch group is connected to the input electricity of second motor, can flatten the PVB membrane of different thickness fast and stably, prevents to appear the fold at the rolling process, can carry out tension adjustment to the PVB membrane of rolling, guarantees that the straightness, the coiling elasticity, appearance and the material performance etc. of PVB membrane reach standard requirement.

Further, the height adjusting mechanism comprises a U-shaped plate, a first flattening roller, a third mounting seat, a third limiting seat and first guide sliding grooves, the number of the first guide sliding grooves is two, the first guide sliding grooves are symmetrically arranged on the front side of the opposite inner side surfaces of the mounting table, the U-shaped plate is connected between the first guide sliding grooves in a sliding mode, the third mounting seat is symmetrically and fixedly connected to the lower end of the left inner wall and the right inner wall of the U-shaped plate, the first flattening roller is arranged between the first arc-shaped opening formed in the middle of the upper surface of the third mounting seat, the third limiting seat is connected to the upper end of the left inner wall and the right inner wall of the U-shaped plate through second inner hexagon bolts, the lower surface of the third limiting seat is respectively contacted with the vertically adjacent third limiting seat, and the first flattening roller is driven to move.

Further, the height adjusting mechanism further comprises two bidirectional screw rods, T-shaped sliding blocks and swing arms, the number of the T-shaped sliding blocks is two, the T-shaped sliding blocks are symmetrically and slidably connected to the left side and the right side of a second guide chute formed in the front side of the upper surface of the workbench, the swing arms are rotatably connected to the upper surface of the T-shaped sliding blocks through pin shafts, one ends of the swing arms, far away from the T-shaped sliding blocks, of the swing arms are rotatably connected with the U-shaped plates through pin shafts, the bidirectional screw rods are rotatably connected to the front sides of the opposite inner sides of the mounting table through bearings, and the T-shaped sliding blocks are in threaded connection with the bidirectional screw rods and drive the first flattening rollers to move through the bidirectional screw rods.

Further, a third motor is arranged in a mounting groove arranged on the right side of the upper surface of the workbench, an output shaft of the third motor is fixedly connected with the bidirectional screw rod, and an input end of the third motor is electrically connected with an output end of the control switch group to drive the bidirectional screw rod to rotate.

Further, the opposite medial surface upper end symmetry fixedly connected with mounting panel of mount pad, the opposite medial surface lower extreme symmetry fixedly connected with second mount pad of mounting panel, the arc mouth that second mount pad upper surface middle part was seted up is placed between first, and the opposite medial surface upper end of mounting panel all is connected with the spacing seat of second through hexagon socket head cap screw three, and the lower surface of the spacing seat of second contacts with vertical adjacent second mount pad respectively, and the second flattening roller is located directly over the first flattening roller, flattens the PVB membrane of rolling through first flattening roller and second flattening roller.

Further, the quantity of slider is two, and slider symmetry sliding connection is in the bar inslot of seting up in the relative medial surface middle part of mount table, rotates between the relative medial surface of slider and is connected with the pivot, and the left side inner wall middle part symmetry fixedly connected with support that is located the mount table on right side is connected with accommodate spindle through the bearing rotation between two supports, accommodate spindle with the slider threaded connection that is located the right side, carries out tension adjustment to PVB membrane between first flattening roller and the winding axle.

Further, still include first motor, first motor sets up in the left side inner wall upper end that is located the mount table on right side, and the output shaft and the accommodate spindle fixed connection of first motor, the output of control switch group is connected to the input electricity of first motor, drives the degree of tension adjustment.

Compared with the prior art, the utility model has the beneficial effects that: this a rolling machine for PVB membrane has following benefit:

the joint of PVB film to be wound is fixed with PVB film winding shaft from the lower end of the outer side surface of the first flattening roller and the second flattening roller, the third motor is regulated and controlled by the control switch group to rotate, the bidirectional screw rod is driven by the third motor to rotate, the T-shaped sliding blocks at the left side and the right side are driven by the bidirectional screw rod to be close to each other, the T-shaped sliding blocks drive the swing arms to rotate, the T-shaped sliding blocks are driven by the swing arms to prop the U-shaped plates to move upwards between the first guiding sliding grooves, the U-shaped plates drive the first flattening roller and the first flattening roller to be close to each other, PVB film between the first flattening roller and the first flattening roller is clamped, the first motor is regulated and controlled by the control switch group according to the tension required to be regulated by PVB film, the first motor is driven by the first motor to rotate, the right side sliding blocks are driven by the regulating screw rod to move downwards, the sliding block on the right side drives the rotating shaft to move downwards, the PVB film between the first flattening roller and the PVB film winding shaft is driven by the rotating shaft to deform downwards, tension adjustment is carried out on the PVB film between the first flattening roller and the PVB film winding shaft, personnel regulate and control the operation of the second motor through the control switch group, the second motor drives the rotating disc on the right side to rotate, the rotating disc on the right side drives the PVB film winding shaft to rotate, the PVB film wound by the PVB film winding shaft is effectively flattened through extrusion of the first flattening roller and the first flattening roller, locking of the swing arm is realized through threaded relation between the bidirectional screw rod and the T-shaped sliding block, stability is regulated, amplitude is controllable, PVB film can be efficiently and stably flattened, wrinkles are prevented from occurring in the winding process, the PVB film is driven to deform through regulating the rotating shaft by regulating the height of the rotating shaft, the tension adjustment of the PVB film is realized, and the flatness, winding tightness, appearance, material property and the like of the PVB film can be ensured to meet the standard requirements.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the internal cross-sectional structure of the present utility model;

fig. 3 is an enlarged schematic view of the structure of the present utility model at a.

In the figure: the device comprises a workbench, a mounting table, a rotating disc 3, a first mounting seat 4, a first limit seat 5, a first inner hexagon bolt 6, a sliding block 7, a rotating shaft 8, a support 9, an adjusting screw rod 10, a first motor 11, a second motor 12, a mounting plate 13, a second limit seat 14, a second mounting seat 15, a height adjusting mechanism 16, a bidirectional screw rod 161, a sliding block 162T, a swing arm 163, a plate 164U, a first flattening roller 165, a third mounting seat 166, a third limit seat 167, a guide chute 168, a third motor 17, a supporting leg 18, a control switch group 19 and a second flattening roller 20.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present embodiment provides a technical solution: a winding machine for PVB film comprises a workbench 1, a sliding block 7 and a height adjusting mechanism 16;

work table 1: the left and right ends of the upper surface of the rotary table are fixedly connected with a mounting table 2, the rotary tables 3 are rotationally connected in rotary grooves symmetrically formed in the rear sides of the opposite inner sides of the mounting table 2, the lower ends of the opposite inner sides of the rotary tables 3 are fixedly connected with first mounting seats 4, the upper ends of the opposite inner sides of the rotary tables 3 are connected with first limit seats 5 through bolts, the lower surfaces of the first limit seats 5 are respectively contacted with vertically adjacent first mounting seats 4, the middle parts of the upper surfaces of the first limit seats 5 are respectively connected with inner hexagon bolts 6 in a threaded manner, the upper ends of the inner parts of the mounting tables 2 positioned on the right side are provided with second motors 12 through support plates, the output shafts of the second motors 12 are fixedly connected with the rotary tables 3 positioned on the right side, four corners of the lower surfaces of the workbench 1 are fixedly connected with supporting legs 18, the number of sliding blocks 7 is two, the sliding blocks 7 are symmetrically and slidably connected in strip-shaped grooves formed in the middle parts of the opposite inner sides of the mounting tables 2, the rotating shaft 8 is rotationally connected between the opposite inner sides of the sliding block 7, the middle part of the left inner wall of the mounting table 2 positioned on the right side is symmetrically and fixedly connected with the supporting seat 9, an adjusting screw rod 10 is rotationally connected between the two supporting seats 9 through a bearing, the adjusting screw rod 10 is in threaded connection with the sliding block 7 positioned on the right side, the device further comprises a first motor 11, the first motor 11 is arranged at the upper end of the left inner wall of the mounting table 2 positioned on the right side, an output shaft of the first motor 11 is fixedly connected with the adjusting screw rod 10, the input end of the first motor 11 is electrically connected with the output end of the control switch group 19, a PVB film winding shaft is arranged between the middle parts of the upper surfaces of the first mounting seats 4, the first limiting seats 5 are arranged on the rotating disc 3 through bolts, the PVB film winding shaft is limited through the first limiting seats 5, and staff screws the inner hexagon bolts 6 on the upper surfaces of the first limiting seats 5 through external tools, the hexagonal bolt I6 moves downwards to fix a PVB film winding shaft, the operation of a first motor 11 is regulated and controlled through a control switch group 19 according to the tension required to be regulated by the PVB film, the first motor 11 drives an adjusting screw rod 10 to rotate, and then the adjusting screw rod 10 drives a right sliding block 7 to move downwards, so that the right sliding block 7 drives a rotating shaft 8 to move downwards, the rotating shaft 8 drives a PVB film between a first flattening roller 165 and the PVB film winding shaft to deform downwards, and tension regulation is realized on the PVB film between the first flattening roller 165 and the PVB film winding shaft;

height adjustment mechanism 16: the height adjusting mechanism 16 comprises a U-shaped plate 164, a first flattening roller 165, a third mounting seat 166, a third limiting seat 167 and a first guide chute 168, wherein the first guide chute 168 is symmetrically arranged on the front side of the opposite inner side surface of the mounting table 2, the U-shaped plate 164 is slidably connected between the first guide chute 168, the third mounting seat 166 is symmetrically and fixedly connected to the lower ends of the left and right inner walls of the U-shaped plate 164, the first flattening roller 165 is arranged between the first arc-shaped openings formed in the middle of the upper surface of the third mounting seat 166, the third limiting seat 167 is connected to the upper ends of the left and right inner walls of the U-shaped plate 164 through an inner hexagon bolt II, the lower surface of the third limiting seat 167 is respectively contacted with the vertically adjacent third limiting seats 167, the height adjusting mechanism 16 further comprises a bidirectional screw rod 161, a T-shaped slide block 162 and a swing arm 163, the number of the T-shaped slide block 162 is two, the T-shaped sliding block 162 is symmetrically and slidingly connected to the left and right sides of a second guide chute arranged on the front side of the upper surface of the workbench 1, the upper surface of the T-shaped sliding block 162 is rotationally connected with a swing arm 163 through a pin shaft, one end of the swing arm 163 far away from the T-shaped sliding block 162 is rotationally connected with a U-shaped plate 164 through a pin shaft, a bidirectional screw rod 161 is rotationally connected to the front side of the opposite inner side of the mounting table 2 through a bearing, the T-shaped sliding block 162 is in threaded connection with the bidirectional screw rod 161, the height adjusting mechanism 16 further comprises the bidirectional screw rod 161, the T-shaped sliding block 162 and the swing arm 163, the number of the T-shaped sliding blocks 162 is two, the T-shaped sliding block 162 is symmetrically and slidingly connected to the left and right sides of the second guide chute arranged on the front side of the upper surface of the workbench 1, the upper surface of the swing arm 163 far away from the T-shaped sliding block 162 is rotationally connected with the swing arm 163 through a pin shaft, one end of the swing arm 163 far away from the T-shaped sliding block 162 is rotationally connected with the U-shaped plate 164 through a pin shaft, the bidirectional screw rod 161 is rotationally connected to the front side of the opposite inner side surface of the mounting table 2 through a bearing, the T-shaped sliding blocks 162 are in threaded connection with the bidirectional screw rod 161, a third motor 17 is arranged in a mounting groove arranged on the right side of the upper surface of the workbench 1, an output shaft of the third motor 17 is fixedly connected with the bidirectional screw rod 161, an input end of the third motor 17 is electrically connected with an output end of the control switch group 19, the upper end of the opposite inner side surface of the mounting table 2 is symmetrically and fixedly connected with a mounting plate 13, the lower end of the opposite inner side surface of the mounting plate 13 is symmetrically and fixedly connected with a second mounting seat 15, a second flattening roller 20 is arranged between arc-shaped openings I arranged in the middle of the upper surface of the second mounting seat 15, the upper end of the opposite inner side surface of the mounting plate 13 is connected with a second limiting seat 14 through an inner hexagon bolt III, the lower surface of the second limiting seat 14 is respectively contacted with the vertically adjacent second mounting seat 15, the second flattening roller 20 is positioned right above the first flattening roller 165, the third motor 17 is regulated and controlled to operate through the control switch group 19, the third motor 17 drives the bidirectional screw rod 161 to rotate, the bidirectional screw rod 161 drives the T-shaped sliding blocks 162 at the left side and the right side to be close to each other, the T-shaped sliding blocks 162 drive the swing arms 163 to rotate, the T-shaped sliding blocks 162 further support the U-shaped plate 164 to move upwards between the first guide sliding grooves 168 through the swing arms 163, and accordingly the U-shaped plate 164 drives the first flattening roller 165 and the first flattening roller 165 to be close to each other, and PVB film between the first flattening roller 165 and the first flattening roller 165 is clamped.

Wherein: the motor control device further comprises a control switch group 19, wherein the control switch group 19 is arranged on the front side surface of the right mounting table 2, the input end of the control switch group 19 is electrically connected with an external power supply, the input end of the second motor 12 is electrically connected with the output end of the control switch group 19, and the control switch group 19 regulates and controls the normal operation of the first motor 11, the second motor 12 and the third motor 17.

The working principle of the winding machine for PVB films provided by the utility model is as follows:

when the PVB film is wound, the PVB film winding shaft is arranged between the middle parts of the upper surfaces of the first installation seats 4, the first limiting seat 5 is installed on the rotating disc 3 through bolts, the PVB film winding shaft is limited through the first limiting seat 5, a person screws the inner hexagon bolt I6 on the upper surface of the first limiting seat 5 through an external tool, the hexagon bolt I6 moves downwards to fix the PVB film winding shaft, the joint of the PVB film to be wound is fixed with the PVB film winding shaft through the lower end of the outer side surface bypassing the rotating shaft 8 between the first flattening roller 165 and the second flattening roller 20, the third motor 17 is regulated and controlled to operate through the control switch group 19, the third motor 17 drives the bidirectional screw 161 to rotate, the T-shaped sliding blocks 162 on the left side and the right side of the bidirectional screw 161 are driven to be close oppositely, the T-shaped sliding blocks 162 drive the swing arm 163 to rotate, and then the T-shaped sliding block 162 props the U-shaped plate 164 to move upwards between the first guide sliding grooves 168 through the swing arms 163, so that the U-shaped plate 164 drives the first flattening roller 165 and the first flattening roller 165 to be close to each other, PVB films between the first flattening roller 165 and the first flattening roller 165 are clamped, a person regulates and controls the operation of the first motor 11 through the control switch group 19 according to the tension required to be regulated by the PVB films, the first motor 11 drives the adjusting screw 10 to rotate, the adjusting screw 10 drives the sliding block 7 on the right side to move downwards, the sliding block 7 on the right side drives the rotating shaft 8 to move downwards, the PVB films between the first flattening roller 165 and the PVB film winding shaft are downwards deformed, tension regulation on the PVB films between the first flattening roller 165 and the PVB film winding shaft is realized, the person regulates and controls the operation of the second motor 12 through the control switch group 19, the second motor 12 drives the rotating disc 3 on the right side to rotate, and then make the rolling disc 3 on right side drive PVB membrane winding shaft and take place to rotate, carry out effective flattening through the extrusion of first flattening roller 165 and first flattening roller 165 to PVB membrane winding of PVB membrane winding shaft, realize the lock of swing arm 163 through the screw thread relation between two-way lead screw 161 and the T type slider 162, can high-efficient stable flatten the PVB membrane, prevent to appear the fold in the winding process, drive PVB membrane through the degree of deformation of adjusting pivot 8 to the regulation of pivot 8 height, realize the tension regulation to the PVB membrane, can guarantee that the straightness of PVB membrane, winding elasticity, appearance and material performance etc. reach standard requirement.

It should be noted that, in the above embodiment, the first motor 11, the second motor 12 and the third motor 17 are all selected from SM3L-042A1BDV servo motors, and the control switch group 19 is provided with switch buttons corresponding to the first motor 11, the second motor 12 and the third motor 17 one by one to control the normal switching operation thereof.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims (7)

1. A rolling machine for PVB membrane, its characterized in that: comprises a workbench (1), a sliding block (7) and a height adjusting mechanism (16);

workbench (1): the left end and the right end of the upper surface of the workbench are fixedly connected with mounting tables (2), rotating discs (3) are rotationally connected in rotating grooves symmetrically formed in the rear sides of the opposite inner sides of the mounting tables (2), first mounting seats (4) are fixedly connected to the lower ends of the opposite inner sides of the rotating discs (3), first limiting seats (5) are connected to the upper ends of the opposite inner sides of the rotating discs (3) through bolts, the lower surfaces of the first limiting seats (5) are respectively contacted with the vertically adjacent first mounting seats (4), inner bolts (6) are respectively and threadedly connected to the middle parts of the upper surfaces of the first limiting seats (5), second motors (12) are arranged at the inner upper ends of the mounting tables (2) located on the right side through support plates, and the output shafts of the second motors (12) are fixedly connected with supporting legs (18) located on the four corners of the lower surfaces of the workbench (1);

height adjustment mechanism (16): the device is arranged on the front side of the upper surface of the workbench (1);

wherein: the electric motor also comprises a control switch group (19), wherein the control switch group (19) is arranged on the front side surface of the right mounting table (2), the input end of the control switch group (19) is electrically connected with an external power supply, and the input end of the second motor (12) is electrically connected with the output end of the control switch group (19).

2. A winder for PVB film according to claim 1 wherein: the height adjusting mechanism (16) comprises a U-shaped plate (164), a first flattening roller (165), a third mounting seat (166), a third limiting seat (167) and first guide sliding grooves (168), wherein the number of the first guide sliding grooves (168) is two, the first guide sliding grooves (168) are symmetrically arranged on the front sides of the opposite inner sides of the mounting table (2), the U-shaped plate (164) is slidably connected between the first guide sliding grooves (168), the third mounting seat (166) is symmetrically and fixedly connected to the lower ends of the left inner wall and the right inner wall of the U-shaped plate (164), the first flattening roller (165) is arranged between the first arc-shaped openings formed in the middle of the upper surface of the third mounting seat (166), the third limiting seats (167) are connected to the upper ends of the left inner wall and the right inner wall of the U-shaped plate (164) through inner hexagon socket head bolts II, and the lower surfaces of the third limiting seats (167) are respectively contacted with the vertically adjacent third limiting seats (167).

3. A winder for PVB film according to claim 2 wherein: the height adjusting mechanism (16) further comprises two bidirectional screw rods (161), T-shaped sliding blocks (162) and swing arms (163), the number of the T-shaped sliding blocks (162) is two, the T-shaped sliding blocks (162) are symmetrically and slidably connected to the left side and the right side of a second guide chute formed in the front side of the upper surface of the workbench (1), the swing arms (163) are rotatably connected to the upper surface of the T-shaped sliding blocks (162) through pin shafts, one ends, far away from the T-shaped sliding blocks (162), of the swing arms (163) are rotatably connected with the U-shaped plates (164) through pin shafts, the bidirectional screw rods (161) are rotatably connected to the front sides of the opposite inner sides of the mounting table (2) through bearings, and the T-shaped sliding blocks (162) are in threaded connection with the bidirectional screw rods (161).

4. A winder for PVB film according to claim 3 wherein: a third motor (17) is arranged in a mounting groove arranged on the right side of the upper surface of the workbench (1), an output shaft of the third motor (17) is fixedly connected with a bidirectional screw rod (161), and an input end of the third motor (17) is electrically connected with an output end of the control switch group (19).

5. A winder for PVB film according to claim 2 wherein: the utility model discloses a first flattening roller, including mounting panel (13), second flattening roller (20), mounting panel (13), mounting panel (2), mounting panel (13) are connected with mounting panel (13) are fixed to relative medial surface upper end symmetry, mounting panel (13) are connected with mounting panel (15) are fixed to relative medial surface lower extreme symmetry, second flattening roller (20) have been placed between arc mouthful one of seting up in the middle part of second mounting panel (15), mounting panel (13) are connected with second spacing seat (14) through hexagon socket head cap screw three respectively, the lower surface of second spacing seat (14) is contacted with vertical adjacent second mounting panel (15) respectively, second flattening roller (20) are located directly over first flattening roller (165).

6. A winder for PVB film according to claim 1 wherein: the number of the sliding blocks (7) is two, the sliding blocks (7) are symmetrically and slidably connected in strip-shaped grooves formed in the middle of the opposite inner side faces of the mounting table (2), rotating shafts (8) are rotatably connected between the opposite inner side faces of the sliding blocks (7), supporting seats (9) are symmetrically and fixedly connected in the middle of the left inner wall of the mounting table (2) on the right side, adjusting screw rods (10) are rotatably connected between the two supporting seats (9) through bearings, and the adjusting screw rods (10) are in threaded connection with the sliding blocks (7) on the right side.

7. A winder for PVB film according to claim 6 wherein: the automatic control device is characterized by further comprising a first motor (11), wherein the first motor (11) is arranged at the upper end of the left inner wall of the mounting table (2) positioned on the right side, an output shaft of the first motor (11) is fixedly connected with the adjusting screw rod (10), and an input end of the first motor (11) is electrically connected with an output end of the control switch group (19).