A kind of anti-fracture winding machine for PET film winding

Abstract

The present invention belongs to the technical field of material winding, and discloses an anti-fracture winding machine for winding PET film, including a frame; a feeding component; a sorting component; a cleaning component; a variable component; a winding component and an arc surface component. The present invention is equipped with a newly designed arc surface component. When the second motor rotates, it will drive the sun gear on the right to rotate, driving the three meshing planetary gears to rotate in the fixed gear ring, ensuring the smoothness of the second motor operation and enhancing the torque. The second rotating wheel and the first belt can transmit the rotational force to the circular shaft connected to the first rotating wheel. A plurality of trapezoidal round rods inserted in the circular ring and mounted around the outer edge of the circular shaft form a trapezoidal surface with a flat middle and gradually contracted on both sides. When the film passes through this, it will slightly contract inward by a certain angle, presenting a convex arc surface, so that it can better fit the winding core, solving the problem of curling fracture of the film during the winding process.

Description

Technical Field

[0001] The invention belongs to the technical field of material winding, and in particular relates to an anti-fracture winding machine for winding a PET film. Background Art

[0002] PET film is a packaging film with comprehensive performance. It has good transparency, glossiness and good air tightness. It can be used as the skin-feeling surface or high-gloss surface of furniture. In its production process, it will be stored in a winding way. After the stretch film is preheated, stretched and shaped, the film will enter the traction device. Then, the film passes through the tension control roller, flattening roller and tracking roller to eliminate longitudinal wrinkles and ensure that the film is wound flatly on the winding shaft.

[0003] However, a variety of problems may occur when the film is wound, such as improper tension control, which causes the film to be unevenly tight during the winding process and curling, and a large amount of air entrapment and poor cumulative thickness tolerance during the slitting and rewinding process. These reasons may cause the risk of breakage, resulting in a series of problems such as substandard packaging and rework. Summary of the invention

[0004] The object of the present invention is to provide a PET film anti-fracture winder for winding, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a PET film anti-fracture winding machine, comprising a frame, a feeding assembly is fixedly installed on the top of the frame, and further comprising:

[0006] A linkage winding mechanism, comprising a finishing assembly, the finishing assembly is fixedly mounted on the right side of the feeding assembly, a cleaning assembly is fixedly mounted on the bottom of the finishing assembly, a variable assembly is fixedly mounted on the right side of the cleaning assembly, and a winding assembly is fixedly mounted on the right side of the variable assembly;

[0007] An arc surface component, wherein the arc surface component is fixedly installed on the right side of the variable component, and the arc surface component includes a second motor, two rotating rings are fixedly installed on the top of the second motor, a circular shaft is rotatably installed between the two rotating rings, two circular rings are symmetrically installed at the middle position of the circular shaft, and a plurality of trapezoidal round rods are installed around and through the two circular rings, the rotating shaft of the rotating ring on the right side is fixedly connected with a first rotating wheel, a first belt is movably sleeved on the outer edge of the first rotating wheel, and a second rotating wheel is movably sleeved on the other end of the first belt, and the rotating shaft of the second rotating wheel is fixedly connected with a sun gear, and the sun gear is fixedly connected to the output shaft of the second motor, and three planetary gears are meshed on the outer edge of the sun gear, and gear rings are meshed on the outer edges of the three planetary gears.

[0008] Preferably, the frame includes a bottom frame, two left frames are fixedly installed on the left side of the bottom frame, two middle frames are fixedly connected to the right sides of the two left frames, two right frames are fixedly connected to the right sides of the two middle frames, the two rotating rings are fixedly installed on the top of the right frame, and the second motor and the gear ring are fixedly installed inside the left and right right frames respectively.

[0009] Preferably, the feeding assembly includes two rails, the two rails are fixedly installed on the top inner side of the left frame, two first springs are fixedly installed in the two rails, L-shaped rods are slidably installed in the middle position of the two groups of the first springs, first rollers are rotatably installed on the top inner side of the two L-shaped rods, two bent plates are fixedly installed on the right side of the first roller, two second springs are fixedly installed in the middle of the two bent plates, and second rollers are slidably installed in the middle position of the two groups of the second springs.

[0010] Preferably, the sorting assembly includes two groups of first bearings, the outer rings of the two groups of first bearings are fixedly installed on the tops of the two middle frames, the inner rings of the two groups of first bearings are fixedly connected to the third rollers, the front sides of the two third rollers are fixedly connected to the first bevel gears, the two first bevel gears are meshed with second bevel gears in the vertical direction, the rotating shafts of the two second bevel gears are connected to the synchronization rod, and the synchronization rod is rotatably installed on the front side of the middle frame.

[0011] Preferably, the cleaning component includes a shell, which is fixedly installed inside the middle frame, and fans are fixedly connected to the front and rear positions of the shell, impellers are fixedly installed in the middle of the two fans, and a plurality of inclined grooves are installed on the top of the shell.

[0012] Preferably, the variable assembly includes two V-shaped rods, and the two V-shaped rods are fixedly installed on the right side of the middle frame, and a connecting rod is fixedly installed on the bottom of the two V-shaped rods. The inner sides of the two V-shaped rods are fixedly connected to the outer ring of the second bearing, and the inner rings of the two second bearings are fixedly connected to a large gear. There are six elliptical grooves around the two large gears, and movable rods are movably connected in the six groups of elliptical grooves. The outer sides of the six groups of movable rods are fixedly connected to arc plates, and the right sides of the two large gears are meshed with small gears. The rotating shafts of the two small gears are fixedly connected to the first motor, and the two first motors are fixedly connected to the connecting rod.

[0013] Preferably, the winding assembly includes two support frames, the two support frames are fixedly mounted on the right side of the right frame, the tops of the two support frames are fixedly mounted with third bearings, the inner rings of the two third bearings are fixedly mounted with winding cores, the left outer edge of the rotating shaft of the winding core is sleeved with a third wheel, the outer edge of the third wheel is movably sleeved with a second belt, the other end of the second belt is sleeved with a fourth wheel, and the fourth wheel is sleeved on the output shaft of the second motor.

[0014] The beneficial effects of the present invention are as follows:

[0015] 1. The present invention is equipped with a newly designed arc surface component. When the second motor rotates, it will drive the sun gear on the right to rotate, driving the three meshing planetary gears to rotate in the fixed gear ring, ensuring the smoothness of the second motor's operation and enhancing the torque. The rotational force can be transmitted to the circular shaft connected to the first rotating wheel through the second rotating wheel and the first belt. A plurality of trapezoidal round rods inserted in the circular ring and mounted around the outer edge of the circular shaft form a trapezoidal surface with a flat middle and gradually contracted on both sides. When the film passes through this, it will slightly contract inward by a certain angle, presenting a convex arc surface, so that it can better fit the winding core, solving the problem of edge breakage of the film during the winding process.

[0016] 2. The present invention is equipped with a movable feeding assembly. When winding, the first roller can move left and right a certain distance in the track through the L-shaped rod under the elastic action of the first spring, and the second roller can also move in an arc shape on the curved plate for a certain distance under the elastic action of the second spring. This ensures that when pulling the feed, the film can have a lateral movable space and will not break easily, thereby solving the problem of improper tension control generated when the film is wound.

[0017] 3. The present invention is equipped with a cleaning component and two fans are started. The two fans are installed in the same direction, with the left fan taking in air and the right fan exhausting air. The impellers are fixedly connected to the rotating shafts of the two fans. When the two fans are rotating, the impellers will also rotate to form a negative pressure in the outer casing. Dust in the bottom area of ​​the film can be absorbed through the inclined groove and discharged through the right fan. This can avoid the risk of breakage caused by a large amount of air being caught during the slitting and rewinding process and longitudinal stripes caused by poor cumulative thickness tolerance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a side view of the overall structure of the present invention;

[0020] Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 4 This is a schematic diagram of the structure of the feed assembly of the present invention;

[0022] Figure 5 A schematic diagram of the component structure of the present invention is provided;

[0023] Figure 6 This is a schematic diagram of the cleaning component structure of the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the variable components of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of the arc surface component of the present invention;

[0026] Fig. 9 It is a schematic diagram of the structure of the winding assembly of the present invention.

[0027] In the figure: 1, frame; 2, feeding assembly; 3, finishing assembly; 4, cleaning assembly; 5, changing assembly; 6, arc surface assembly; 7, winding assembly; 11, bottom frame; 12, left frame; 13, middle frame; 14, right frame; 21, track; 22, first spring; 23, L-shaped rod; 24, first roller; 25, bent plate; 26, second spring; 27, second roller; 31, first bearing; 32, third roller; 33, first bevel gear; 34, second bevel gear; 35, synchronization rod; 41, housing; 42, fan; 43, impeller; 44, chute; 51. V-shaped rod; 52. connecting rod; 53. second bearing; 54. large gear; 55. elliptical groove; 56. movable rod; 57. arc plate; 58. first motor; 59. small gear; 61. second motor; 62. rotating ring; 63. circular shaft; 64. circular ring; 65. trapezoidal rod; 66. first rotating wheel; 67. first belt; 68. second rotating wheel; 69. sun gear; 610. planetary gear; 611. gear ring; 71. support frame; 72. third bearing; 73. winding core; 74. third rotating wheel; 75. second belt; 76. fourth rotating wheel. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figures 1 to 9 As shown, an embodiment of the present invention provides an anti-fracture winding machine for winding a PET film, comprising a frame 1, a feeding assembly 2 is fixedly installed on the top of the frame 1, and further comprising:

[0030] The linkage winding mechanism comprises a finishing component 3, which is fixedly mounted on the right side of the feeding component 2, a cleaning component 4 is fixedly mounted on the bottom of the finishing component 3, a changing component 5 is fixedly mounted on the right side of the cleaning component 4, and a winding component 7 is fixedly mounted on the right side of the changing component 5;

[0031] The arc surface component 6 is fixedly installed on the right side of the variable component 5. The arc surface component 6 includes a second motor 61. Two rotating rings 62 are fixedly installed on the top of the second motor 61. A circular shaft 63 is rotatably installed between the two rotating rings 62. Two circular rings 64 are symmetrically installed in the middle of the circular shaft 63. A plurality of trapezoidal round rods 65 are installed around and through the two circular rings 64. The rotating shaft of the right rotating ring 62 is fixedly connected with a first rotating wheel 66. The outer edge of the first rotating wheel 66 is movably sleeved with a first belt 67. The other end of the first belt 67 is movably sleeved with a second rotating wheel 68. The rotating shaft of the second rotating wheel 68 is fixedly connected with a sun gear 69. The sun gear 69 is fixedly connected to the output shaft of the second motor 61. The outer edge of the sun gear 69 is meshed with three planetary gears 610. The outer edges of the three planetary gears 610 are meshed with gear rings 611.

[0032] The arc surface component 6 shares the same output source of the second motor 61 with the winding component 7. When the second motor 61 rotates, it will drive the sun gear 69 on the right to rotate, driving the three meshing planetary gears 610 to rotate in the fixed gear ring 611, ensuring the smoothness of the operation of the second motor 61 and enhancing the torque. The rotational force can be transmitted to the circular shaft 63 connected to the first rotating wheel 66 through the second rotating wheel 68 and the first belt 67. A plurality of trapezoidal round rods 65 inserted in the circular ring 64 and mounted around the outer edge of the circular shaft 63 form a trapezoidal surface with a flat middle and gradually contracted on both sides. When the film passes through this, it will slightly contract inward by a certain angle, presenting a convex arc surface, so that it can better fit the winding core 73, solving the problem of improper tension control during film winding, resulting in the problem of curling breakage of the film during the winding process;

[0033] The frame 1 includes a bottom frame 11, two left frames 12 are fixedly installed on the left side of the bottom frame 11, two middle frames 13 are fixedly connected to the right sides of the two left frames 12, two right frames 14 are fixedly connected to the right sides of the two middle frames 13, two rotating rings 62 are fixedly installed on the top of the right frame 14, and the second motor 61 and the gear ring 611 are fixedly installed inside the left and right right frames 14 respectively;

[0034] The fixed connection design of the bottom frame 11, the left frame 12, the middle frame 13 and the right frame 14 enhances the structural stability of the entire frame 1. This design can effectively disperse the load and reduce the stress concentration of a single component, thereby improving the bearing capacity and service life of the overall structure;

[0035] The feeding assembly 2 includes two rails 21, which are fixedly installed on the top inner side of the left frame 12, two first springs 22 are fixedly installed in the two rails 21, L-shaped rods 23 are slidably installed in the middle of the two groups of first springs 22, first rollers 24 are rotatably installed on the top inner side of the two L-shaped rods 23, two bent plates 25 are fixedly installed on the right side of the first roller 24, two second springs 26 are fixedly installed in the middle of the two bent plates 25, and second rollers 27 are slidably installed in the middle of the two groups of second springs 26;

[0036] When winding, the first roller 24 can move left and right for a certain distance in the track 21 through the L-shaped rod 23 under the elastic action of the first spring 22, and the second roller 27 can also move in an arc shape for a certain distance on the curved plate 25 under the elastic action of the second spring 26, ensuring that when pulling the feed, the film can have a horizontal movement space and will not break easily;

[0037] The finishing assembly 3 includes two groups of first bearings 31, the outer rings of the two groups of first bearings 31 are fixedly installed on the tops of the two middle frames 13, the inner rings of the two groups of first bearings 31 are fixedly connected with third rollers 32, the front sides of the two third rollers 32 are fixedly connected with first bevel gears 33, the vertical directions of the two first bevel gears 33 are meshed with second bevel gears 34, the rotating shafts of the two second bevel gears 34 are connected with synchronization rods 35, and the synchronization rods 35 are rotatably installed on the front side of the middle frame 13;

[0038] The two third rollers 32 are rotated by friction during winding. The synchronization structure composed of the two first bevel gears 33, the second bevel gear 34 and the synchronization rod 35 can ensure that the two third rollers 32 can rotate in the same direction and at the same speed, ensuring that the film is flat and has no ripples when passing through this area.

[0039] The cleaning assembly 4 includes a housing 41, which is fixedly mounted inside the middle frame 13, and fans 42 are fixedly connected to the front and rear positions of the housing 41, and impellers 43 are fixedly mounted in the middle of the two fans 42, and a plurality of inclined slots 44 are mounted on the top of the housing 41;

[0040] By starting the two fans 42 of the cleaning assembly 4, the two fans 42 are installed in the same direction, the left fan 42 takes in air and the right fan 42 discharges air, and the impeller 43 is fixedly connected to the rotating shafts of the two fans 42. When the two fans 42 rotate and work, the impeller 43 also rotates to form a negative pressure in the housing 41, and the dust in the bottom area of ​​the film can be sucked through the inclined slot 44 and discharged through the right fan 42;

[0041] The variable assembly 5 includes two V-shaped rods 51, which are fixedly installed on the right side of the middle frame 13. A connecting rod 52 is fixedly installed at the bottom of the two V-shaped rods 51. The inner sides of the two V-shaped rods 51 are fixedly connected to the outer ring of the second bearing 53. The inner rings of the two second bearings 53 are fixedly connected to the large gear 54. There are six elliptical grooves 55 around the two large gears 54. The six groups of elliptical grooves 55 are movably connected with movable rods 56. The outer sides of the six groups of movable rods 56 are fixedly connected with arc plates 57. The right sides of the two large gears 54 are meshed with small gears 59. The rotating shafts of the two small gears 59 are fixedly connected to the first motors 58. The two first motors 58 are fixedly connected to the connecting rod 52.

[0042] By rotating the first motor 58 counterclockwise, the small gear 59 can be driven to rotate, and then the large gear 54 can be rotated clockwise, and the multiple movable rods 56 move and expand in the elliptical groove 55, driving the multiple arc plates 57 surrounding the circular tube to slowly open, forming a circular tube with an enlarged diameter. When the film is subjected to the enlarged circular tube, the film on the left side of the whole can be tightened and straightened;

[0043] The winding assembly 7 includes two support frames 71, and the two support frames 71 are fixedly installed on the right side of the right frame 14. The tops of the two support frames 71 are fixedly installed with third bearings 72, and the inner rings of the two third bearings 72 are fixedly installed with winding cores 73. The left outer edge of the rotating shaft of the winding core 73 is sleeved with a third rotating wheel 74, and the outer edge of the third rotating wheel 74 is movably sleeved with a second belt 75. The other end of the second belt 75 is sleeved with a fourth rotating wheel 76, and the fourth rotating wheel 76 is sleeved on the output shaft of the second motor 61.

[0044] By starting the second motor 61 to rotate clockwise, a clockwise rotation force is generated on the third wheel 74 through the fourth wheel 76 and the second belt 75. At this time, the winding core 73 will rotate along the axis of the third bearing 72, which can rewind the film.

[0045] Working principle:

[0046] When using the present invention, the produced PET film is first fed through the feeding assembly 2, and the film is covered on the outer edge of the first roller 24 from top to bottom and then wound on the outer edge of the second roller 27 from bottom to top; after being wound through the feeding assembly 2, the film is covered and passed through the third roller 32 on the left, and then wound downward through the third roller 32 on the right, and then continuously passed downward through the round tube composed of multiple arc plates 57 and then pulled to the right, covered with the arc surface assembly 6 and then wound on the outer edge of the winding core 73, completing the preliminary preparation work;

[0047] The second motor 61 is started to rotate clockwise, and a clockwise rotation force is generated on the third wheel 74 through the fourth wheel 76 and the second belt 75. At this time, the winding core 73 rotates along the axis of the third bearing 72 to reel the film. When reeling, the first roller 24 can move a certain distance left and right in the track 21 through the L-shaped rod 23 under the elastic action of the first spring 22, and the second roller 27 can also move a certain distance in an arc on the curved plate 25 under the elastic action of the second spring 26, so as to ensure that the film has a horizontal activity space when pulling the feed and will not break easily.

[0048] The two third rollers 32 are rotated by friction during winding. The synchronization structure composed of the two first bevel gears 33, the second bevel gear 34 and the synchronization rod 35 can ensure that the two third rollers 32 can rotate in the same direction and at the same speed, ensuring that the film is flat and has no ripples when passing through this area.

[0049] While the finishing component 3 is rolling, the two fans 42 of the cleaning component 4 are started. The two fans 42 are installed in the same direction, the left fan 42 takes in air, and the right fan 42 discharges air. The impeller 43 is fixedly connected to the rotating shafts of the two fans 42. When the two fans 42 rotate and work, the impeller 43 also rotates to form a negative pressure in the housing 41, and the dust in the bottom area of ​​the film can be sucked through the chute 44 and discharged through the right fan 42.

[0050] By rotating the first motor 58 counterclockwise, the small gear 59 can be driven to rotate, and then the large gear 54 can be rotated clockwise, and the multiple movable rods 56 move and expand in the elliptical groove 55, driving the multiple arc plates 57 surrounding the circular tube to slowly open, forming a circular tube with an enlarged diameter. When the film is subjected to the enlarged circular tube, the film on the left side of the whole can be tightened and straightened;

[0051] When the winding component 7 is winding, the arc surface component 6, which shares the same second motor 61 output source as the winding component 7, will drive the right sun gear 69 to rotate when the second motor 61 rotates, and drive the three meshing planetary gears 610 to rotate in the fixed gear ring 611, to ensure the smooth operation of the second motor 61 and enhance the torque. The rotational force can be transmitted to the circular shaft 63 connected to the first rotating wheel 66 through the second rotating wheel 68 and the first belt 67. A plurality of trapezoidal round rods 65 inserted in the ring 64 and mounted around the outer edge of the circular shaft 63 form a trapezoidal surface with a flat middle and gradually shrinking on both sides. When the film passes through here, it will slightly shrink inward by a certain angle, presenting a convex arc surface, so that it can better fit the winding core 73 without causing curling problems. The workflow ends here.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PET film anti-fracture winder, comprising a frame (1), characterized in that: A feeding assembly (2) is fixedly mounted on the top of the frame (1), and further comprises: A linked winding mechanism, comprising a finishing component (3), the finishing component (3) being fixedly mounted on the right side of the feeding component (2), a cleaning component (4) being fixedly mounted on the bottom of the finishing component (3), a variable component (5) being fixedly mounted on the right side of the cleaning component (4), and a winding component (7) being fixedly mounted on the right side of the variable component (5); The arc surface component (6) is fixedly mounted on the right side of the variable component (5), and the arc surface component (6) comprises a second motor (61). Two rotating rings (62) are fixedly mounted on the top of the second motor (61). A circular shaft (63) is rotatably mounted between the two rotating rings (62). Two circular rings (64) are symmetrically mounted at the middle of the circular shaft (63). A plurality of trapezoidal round rods (65) are mounted around and through the two circular rings (64). The rotating ring (62) on the right side is The driving shaft is fixedly connected to a first rotating wheel (66); a first belt (67) is movably sleeved on an outer edge of the first rotating wheel (66); a second rotating wheel (68) is movably sleeved on the other end of the first belt (67); a rotating shaft of the second rotating wheel (68) is fixedly connected to a sun gear (69); the sun gear (69) is fixedly connected to an output shaft of a second motor (61); three planetary gears (610) are meshed on an outer edge of the sun gear (69); and a gear ring (611) is meshed on the outer edges of the three planetary gears (610); The frame (1) comprises a bottom frame (11), two left frames (12) are fixedly mounted on the left side of the bottom frame (11), two middle frames (13) are fixedly connected to the right sides of the two left frames (12), two right frames (14) are fixedly connected to the right sides of the two middle frames (13), the two rotating rings (62) are fixedly mounted on the top of the right frame (14), and the second motor (61) and the gear ring (611) are fixedly mounted inside the left and right right frames (14), respectively; The feeding assembly (2) comprises two rails (21), the two rails (21) are fixedly mounted on the inner side of the top of the left frame (12), two first springs (22) are fixedly mounted in the two rails (21), an L-shaped rod (23) is slidably mounted in the middle of the two groups of the first springs (22), a first roller (24) is rotatably mounted on the inner side of the top of the two L-shaped rods (23), two bent plates (25) are fixedly mounted on the right side of the first roller (24), two second springs (26) are fixedly mounted in the middle of the two bent plates (25), and a second roller (27) is slidably mounted in the middle of the two groups of the second springs (26); The arranging assembly (3) comprises two groups of first bearings (31), the outer rings of the two groups of first bearings (31) are fixedly mounted on the tops of the two middle frames (13), the inner rings of the two groups of first bearings (31) are fixedly connected to third rollers (32), the front sides of the two third rollers (32) are fixedly connected to first bevel gears (33), the two first bevel gears (33) are vertically meshed with second bevel gears (34), the rotating shafts of the two second bevel gears (34) are connected to synchronization rods (35), and the synchronization rods (35) are rotatably mounted on the front side of the middle frame (13); The cleaning component (4) comprises a housing (41), the housing (41) being fixedly mounted inside the middle frame (13), fans (42) being fixedly connected to the front and rear positions of the housing (41), impellers (43) being fixedly mounted in the middle of the two fans (42), and a plurality of inclined grooves (44) being mounted on the top of the housing (41).

2. The anti-fracture winder for winding PET film according to claim 1, characterized in that: The variable assembly (5) comprises two V-shaped rods (51), the two V-shaped rods (51) are fixedly mounted on the right side of the middle frame (13), a connecting rod (52) is fixedly mounted on the bottom of the two V-shaped rods (51), the inner sides of the two V-shaped rods (51) are fixedly connected to the outer ring of the second bearing (53), the inner rings of the two second bearings (53) are fixedly connected to a large gear (54), the two large gears (54) are surrounded by six elliptical grooves (55), the six groups of elliptical grooves (55) are movably engaged with movable rods (56), the outer sides of the six groups of movable rods (56) are fixedly connected to an arc plate (57), the right sides of the two large gears (54) are meshed with small gears (59), the rotating shafts of the two small gears (59) are fixedly connected to the first motor (58), and the two first motors (58) are fixedly connected to the connecting rod (52).

3. The anti-fracture winder for winding PET film according to claim 1, characterized in that: The winding assembly (7) comprises two support frames (71), the two support frames (71) are fixedly mounted on the right side of the right frame (14), the tops of the two support frames (71) are fixedly mounted with third bearings (72), the inner rings of the two third bearings (72) are fixedly mounted with winding cores (73), the left outer edge of the rotating shaft of the winding core (73) is sleeved with a third rotating wheel (74), the outer edge of the third rotating wheel (74) is movably sleeved with a second belt (75), the other end of the second belt (75) is sleeved with a fourth rotating wheel (76), and the fourth rotating wheel (76) is sleeved on the output shaft of the second motor (61).

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