Film Rewinder

Abstract

The present invention relates to a film rewinder, which comprises a frame, a winding mechanism and a flipping mechanism. The flipping mechanism includes: a first turntable rotatably mounted on the frame, with a first outer peripheral gear arranged on the outer peripheral wall surface of the first turntable; a second turntable arranged opposite to the first turntable left and right and rotatably mounted on the frame, with a second outer peripheral gear arranged on the outer peripheral wall surface of the second turntable; a flipping shaft extending in the left-right direction and rotatably supported on the frame; a pair of left-right opposite arranged transmission gears, both of the pair of transmission gears are fixedly mounted on the flipping shaft and respectively mesh with the first outer peripheral gear and the second outer peripheral gear; and a flipping motor drivingly connected to the flipping shaft and capable of driving the flipping shaft to rotate. The winding mechanism includes: a pair of winding shafts extending in the left-right direction, each winding shaft being rotatably supported on the first turntable and the second turntable; and at least one winding motor drivingly connected to the pair of winding shafts and capable of driving the winding shafts to rotate.

Description

Technical Field

[0001] The present invention relates to the field of thin film production and manufacturing, and in particular to a thin film rewinder. Background Art

[0002] A thin film rewinder is an end device of a thin film production line, which is used to wind the formed thin film on a winding shaft. At present, for wide-width thin films (the width of the thin film is in the range of 4-8 meters), a single-station winding method is generally adopted, that is, the thin film is cut off and the winding shaft is replaced after the winding shaft is full, and then the thin film is wound on the newly replaced winding shaft. This winding method cannot continuously wind the thin film during the process of replacing the winding shaft, resulting in a large amount of thin film waste and reducing the economic benefits of the thin film production line. Summary of the Invention

[0003] Aiming at the defects existing in the above single-station winding method, the purpose of the present invention is to provide a thin film rewinder with a double-station winding.

[0004] In order to achieve the above purpose, the present invention provides the following technical solutions: A thin film rewinder includes a frame, a winding mechanism, and a flipping mechanism. The flipping mechanism includes: a first turntable rotatably installed on the frame, and a first outer peripheral gear is arranged on the outer peripheral wall surface of the first turntable; a second turntable arranged opposite to the first turntable left and right and rotatably installed on the frame, and a second outer peripheral gear is arranged on the outer peripheral wall surface of the second turntable; a flipping shaft extending in the left and right directions and rotatably supported on the frame; a pair of left and right opposite transmission gears, both of the pair of transmission gears are fixedly installed on the flipping shaft and respectively mesh with the first outer peripheral gear and the second outer peripheral gear; and a flipping motor drivingly connected to the flipping shaft and capable of driving the flipping shaft to rotate. The winding mechanism includes: a pair of winding shafts extending in the left and right directions, each of the winding shafts is rotatably supported on the first turntable and the second turntable; and at least one winding motor drivingly connected to the pair of winding shafts and capable of driving the winding shafts to rotate.

[0005] In the above technical solution, preferably, the winding mechanism further includes a pair of rotators extending in the left and right directions, each rotator is rotatably supported on the second turntable, the pair of winding shafts are respectively connected to the pair of rotators and can rotate synchronously with the corresponding rotators, and the at least one winding motor is drivingly connected to the pair of rotators.

[0006] In the above preferred scheme, it is further preferred that the winding mechanism also includes a mounting frame fixedly mounted on the frame and an intermediate rotating shaft rotatably supported on the mounting frame, the intermediate rotating shaft is a double sleeve structure, and the winding mechanism is arranged with a first winding motor and a second winding motor, and the first winding motor and the second winding motor are respectively connected to a pair of rotating bodies via the intermediate rotating shaft.

[0007] In the above-mentioned preferred scheme, it is further preferred that the winding shaft includes a second support portion located on one side end portion and a locking tooth located on the periphery of the second support portion, the second support portion protrudes axially outward relative to the locking tooth, and the rotating body is provided with a support groove matched with the second support portion and a docking tooth located on the periphery of the support groove on one side end portion close to the winding shaft, the second support portion is engaged with the support groove, and the locking tooth is meshed with the docking tooth.

[0008] In the above technical solution, preferably, the winding shaft includes a first support portion located at one end portion, a pair of third interfaces are provided on the first turntable, and the first support portion is rotatably supported on the third interface. It is also further preferred that the frame is provided with a first opening for the first turntable to be exposed to the outside, the first support portion has the maximum radial length of the winding shaft and is exposed from the first opening, so that the winding shaft can be pulled out from the first opening. It is also further preferred that the winding shaft is also provided with a clamping groove adjacent to the first support portion, and the film winding machine also includes a pair of clamping devices installed at the first turntable, each of the clamping devices has a clamping crankshaft that is adapted to the clamping groove and is movable to lock and unlock the winding shaft.

[0009] In the above technical solution, preferably, the film winder further comprises a pair of auxiliary support devices arranged at the bottom, the auxiliary support devices comprising a support cylinder and a lifting platform connected to the support cylinder, the support cylinder can drive the lifting platform to move up and down to support the wound film roll. It is also further preferred that the auxiliary support device is installed on a displacement mechanism, and the displacement mechanism can drive the auxiliary support device to move back and forth in the left and right directions.

[0010] In the above technical solution, preferably, the flip mechanism further comprises a fixing member fixedly mounted on the frame, and the flip shaft sleeve is disposed inside the fixing member and is rotatably supported on the fixing member.

[0011] Compared with the prior art, the film rewinder provided by the technical solution of the present invention is provided with a pair of rewinding shafts at the same time, and the pair of rewinding shafts can be switched by a flipping mechanism, so as to achieve the effect of changing the roll without stopping the machine. Among them, the flipping mechanism adopts a gear transmission method to synchronously drive a pair of turntables to rotate, so as to ensure that the relative positions of the two ends of the rewinding shaft do not shift, and avoid the rewinding failure caused by the angular deviation between the length direction of the rewinding shaft and the width direction of the film. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the front view of the film rewinder provided by the present invention;

[0013] Figure 2 is Figure 1 the top view of the film rewinder shown;

[0014] Figure 3 is Figure 1 the left view of the film rewinder shown;

[0015] Figure 4 is Figure 1 the right view of the film rewinder shown;

[0016] Figure 5 is the assembly schematic diagram of the flipping motor, flipping shaft and transmission teeth provided by the present invention;

[0017] Figure 6 is the front view of the rewinding shaft provided by the present invention;

[0018] Figure 7 is the assembly schematic diagram of the intermediate rotating shaft and corresponding components provided by the present invention;

[0019] Figure 8 is the front view of the second turntable provided by the present invention;

[0020] Figure 9 is Figure 8 the cross-sectional view of the second turntable shown at A-A;

[0021] Figure 10 is the assembly drawing of the clamping device and the first turntable provided by the present invention;

[0022] Figure 11 is the front view of the auxiliary support device provided by the present invention.

[0023] Reference numerals in the drawings:

[0024] 100, film rewinder;

[0025] 1, frame; 11, first support frame; 12, second support frame; 13, connecting beam; 14, support feet;

[0026] 21. Take-up reel; 211. First end portion; 212. Second end portion; 213. First support portion; 214. Clamping groove; 215. Second support portion; 216. Clamping teeth;

[0027] 22. Mounting bracket;

[0028] 23. First take-up motor; 24. Second take-up motor;

[0029] 25. Intermediate rotating shaft; 251. First transmission head; 252. Second transmission head; 253. Third transmission head; 254. Fourth transmission head; 255. Core shaft; 256. Outer sleeve shaft;

[0030] 26. Rotating body; 261. Transmission end; 262. Driving end; 263. Support groove; 264. Docking teeth;

[0031] 271. First transmission belt; 272. Second transmission belt; 28. Pressing device;

[0032] 31. First turntable; 311. First outer peripheral gear; 312. Third opening;

[0033] 32. Second turntable; 321. Second outer peripheral gear;

[0034] 33. Tipping motor; 34. Tipping shaft; 35. Transmission gear; 36. Fixing member;

[0035] 4. Clamping device; 41. Driving cylinder; 42. Cylinder shaft; 43. Clamping crankshaft; 44. Mounting disc;

[0036] 5. Auxiliary support device; 51. Support cylinder; 52. Lifting platform;

[0037] Y. Tipping axis center line. Detailed implementation manners

[0038] To describe in detail the technical content, structural features, achieved objectives and effects of the invention, the technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. In the following description, for the purpose of explanation, many specific details are set forth to provide a detailed description of various exemplary embodiments or implementations of the invention. However, the various exemplary embodiments can also be implemented without these specific details or in the case of one or more equivalent arrangements. In addition, the various exemplary embodiments can be different, but not necessarily exclusive. For example, without departing from the inventive concept, the specific shapes, structures and characteristics of the exemplary embodiments can be used or implemented in another exemplary embodiment.

[0039] In addition, in the present application, spatial relative terms such as "under", "below", "beneath", "lower", "above", "upper", "on", "higher", "side" (for example, as in "side wall") are used to describe the relationship between one element and another (other) element as shown in the drawings. The spatial relative terms are intended to include different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the drawings. For example, if the device in the drawing is flipped, an element described as "under" or "beneath" another element or feature will subsequently be positioned "above" the said other element or feature. Therefore, the exemplary term "under" can include both the upper and lower orientations. In addition, the device can be positioned otherwise (for example, rotated 90 degrees or at other orientations), and accordingly, the spatial relative descriptive terms used herein are interpreted.

[0040] Figure 1-2 A film rewinder 100 provided by the present invention is shown. The film rewinder 100 includes a frame 1 that provides support for each component, a winding mechanism for winding the film, a flipping mechanism for switching the winding shaft 21 (see below), and a clamping mechanism for fixing the winding shaft 21.

[0041] The frame 1 includes a first support frame 11, a second support frame 12 arranged opposite to the first support frame 11 left and right, and a plurality of connecting beams 13 located between the first support frame 11 and the second support frame 12. Both the first support frame 11 and the second support frame 12 extend along the vertical direction and are supported on the ground or pedestal by a plurality of feet 14. A plurality of anchor bolts (not shown in the figure) are provided on the feet 14 to firmly fix the frame 1.

[0042] The plurality of connecting beams 13 all extend along the left - right direction, and both side end portions of each connecting beam 13 are fixedly connected to the first support frame 11 and the second support frame 12 respectively to increase the stability of the frame 1.

[0043] The flipping mechanism includes a first turntable 31 and a second turntable 32 rotatably mounted on the inner walls of the first support frame 11 and the second support frame 12 respectively, a flipping motor 33 fixedly mounted on the outer wall of the first support frame 11, a flipping shaft 34 drivingly connected to the flipping motor 33, and a pair of transmission gears 35 fixedly connected to the flipping shaft 34.

[0044] The first turntable 31 and the second turntable 32 are arranged opposite to each other left and right, and a flipping axis line Y extending along the left - right direction is jointly defined by the center points of the two. First outer peripheral gears 311 and second outer peripheral gears 321 are respectively arranged on the outer peripheral wall surfaces of the first turntable 31 and the second turntable 32, and both the first outer peripheral gears 311 and the second outer peripheral gears 321 extend circumferentially around the flipping axis line Y.

[0045] Combined with Figure 5 , the flipping shaft 34 extends along the left - right direction and is rotatably supported on the first support frame 11 and the second support frame 12. The motor shaft of the flipping motor 33 (not marked in the figure) is fixedly connected to the flipping shaft 34 and can drive the flipping shaft 34 to rotate around its own axis.

[0046] A pair of transmission gears 35 are arranged symmetrically left and right and are respectively close to the first support frame 11 and the second support frame 12. The pair of transmission gears 35 respectively mesh with the first outer peripheral gear 311 and the second outer peripheral gear 321. It can be understood that when the flipping motor 33 drives the flipping shaft 34 to rotate, the flipping shaft 34 drives the first turntable 31 and the second turntable 32 to rotate synchronously around the rotation axis Y via the pair of transmission gears 35.

[0047] Preferably, the flipping mechanism further includes a fixing member 36 located between the pair of transmission gears 35. The fixing member 36 is sleeved on the flipping shaft 34 and fixedly connected to the connecting beam 13. The flipping shaft 34 is rotatably supported on the inner wall surface of the fixing member 36 to reduce the deformation of the flipping shaft 34 caused by gravity.

[0048] Continue to refer to Figure 1-2 , the winding mechanism includes a pair of winding shafts 21 extending along the left - right direction, a mounting frame 22 fixedly installed on the outer wall of the second support frame 12, a first winding motor 23 and a second winding motor 24 fixedly installed on the mounting frame 22, and an intermediate shaft 25 rotatably supported on the mounting frame 22.

[0049] A pair of winding shafts 21 are rotatably supported on the first and second turntables and are arranged vertically opposite to each other. Each winding shaft 21 is configured to be able to rotate synchronously with the first and second turntables around the rotation axis Y. As Figure 6 shown, the winding shaft 21 includes a first end portion 211 and a second end portion 212 that are away from each other. A first support portion 213 and a clamping groove 214 adjacent to the inside of the first support portion 213 are provided on the first end portion 211. The clamping groove 214 is located inside the first support portion 213 and is radially recessed inward relative to the first support portion 213. A second support portion 215 and a clamping tooth 216 located outside the second support portion 215 are provided on the second end portion 212. The second support portion 215 protrudes axially outward relative to the clamping tooth 216.

[0050] As Figure 7As shown, the intermediate rotating shaft 25 is a double-tube structure, which includes an outer sleeve shaft 256 rotatably supported on the mounting bracket 22 and a core shaft 255 rotatably installed inside the outer sleeve shaft 256. Both shaft end portions of the core shaft 255 protrude outward relative to the outer sleeve 256 and are respectively fixedly connected to a first drive head 251 and a third drive shaft 253 to achieve synchronous rotation of the first drive head 251 and the third drive head 253; both shaft end portions of the outer sleeve shaft 256 are respectively fixedly connected to a second drive head 252 and a fourth drive head 254 to achieve synchronous rotation of the second drive head 252 and the fourth drive head 254. Among them, the first and second drive heads are located outside the mounting bracket 22, and the third and fourth drive heads are located inside the mounting bracket.

[0051] The first winding motor 23 and the second winding motor 24 are respectively drivingly connected to the first drive head 251 and the second drive head 252. Combining Figure 8-9 , the second support frame 12 is provided with a second opening (not shown in the figure) for part of the second turntable 32 to be exposed to the outside. The winding mechanism further includes a pair of rotating bodies 26 rotatably supported on the second turntable 32. Each rotating body 26 includes a drive end 261 protruding outward from the second opening and a drive end 262 away from the drive end 261. The drive end 262 protrudes outward from the other end surface of the second turntable 32. A support groove 263 adapted to the first support portion 213 on the winding shaft 21 and a docking tooth 264 capable of meshing with the engaging tooth 216 on the winding shaft 21 are arranged on the drive end 262.

[0052] The third drive head 253 and the fourth drive head 254 on the intermediate rotating shaft 25 are respectively drivingly connected to the drive ends 261 of a pair of rotating bodies 26. Among them, the third drive head 253 and the drive end 261 of the corresponding rotating body 26 are drivingly connected by a first drive belt 371, and the fourth drive head 254 and the drive end 261 of the corresponding rotating body 26 are drivingly connected by a second drive belt 372. Preferably, a pair of pressing devices 28 are further arranged on the second turntable 32, and the pressing devices 28 are used to press the first and second drive belts to ensure the synchronization rate between the third and fourth drive heads and the corresponding rotating bodies 26.

[0053] Refer to Figure 1 、 Figure 3 And Figure 6 , the first support frame 11 is provided with a first opening (not marked in the figure) for part of the first turntable 32 to be exposed to the outside. A pair of third openings 312 (see Figure 10), a pair of third openings 312 are respectively aligned with a pair of rotating bodies 26 on the second turntable 32. Each winding shaft 21 is configured such that its first support portion 213 is rotatably supported on the inner wall surface of the third opening 312 and exposed to the outside from the first opening; the second support portion 215 is rotatably within the support groove 263 of the rotating body 26; the engaging teeth 216 are engaged with the docking teeth 264. Thus, the film winding machine 100 can drive the corresponding winding shaft 21 to rotate around its own axis by controlling the first winding motor 23 or the second winding motor 24.

[0054] Refer to Figure 1 And Figure 10 , the clamping mechanism includes a pair of clamping devices 4 respectively used for locking and unlocking a pair of winding shafts 21. The clamping device 4 is installed on the inner end surface of the first turntable 31 and includes a driving cylinder 41, a cylinder shaft 42 capable of telescoping relative to the driving cylinder 41, and a clamping crankshaft 43 rotatably hinged to the end of the cylinder shaft 42. Both the driving cylinder 41 and the end of the clamping crankshaft 43 away from the cylinder shaft 42 are rotatably installed on the first turntable 31 through a mounting plate 44, and the clamping crankshaft 44 is configured to fit into the clamping groove 214 of the winding shaft 21. The clamping device 4 has a locked state and an unlocked state. When the clamping device 4 is in the locked state (such as Figure 10 the clamping device 4 on the right side in the figure), the cylinder shaft 42 is in the extended state, and the clamping crankshaft 42 can clamp the clamping groove 214 of the corresponding winding shaft 21; when the clamping device 4 is in the unlocked state (such as Figure 10 the clamping device 4 on the left side in the figure), the cylinder shaft 42 is in the retracted state, and the clamping crankshaft 42 can disengage from the clamping groove 214 of the corresponding winding shaft 21. Among them, the first support portion 213 of the winding shaft 21 has the maximum radial length of the winding shaft 21, so that the user can pull out the winding shaft 21 from the first opening after the clamping device 4 is unlocked.

[0055] Refer to Figure 1 And Figure 11 , the film winding machine 100 further includes a pair of auxiliary support devices 5. The pair of auxiliary support devices 5 are respectively close to the first support frame 11 and the second support frame 12 and are located directly below the lower winding shaft 21. The auxiliary support device 5 is installed on a displacement mechanism (not marked in the figure) and can move along the left - right direction. The auxiliary support device 5 includes a support cylinder 51 and a lifting platform 52 fixedly connected to the cylinder shaft of the support cylinder 51. The support cylinder 51 can drive the lifting platform 51 to move up and down.

[0056] The working principle of the film rewinder 100 is described as follows: A core (not shown in the figure) is sleeved on the rewinding shaft 21. The first rewinding motor 23 or the second rewinding motor 24 drives the upper rewinding shaft 21 to rotate via the intermediate rotating shaft 25 and the corresponding rotating body 26. After the film enters the film rewinder 100, it is wound around the core on the upper rewinding shaft 21.

[0057] When the upper rewinding shaft 21 is full, the first turntable 31 and the second turntable 32 are synchronously driven by the flipping motor 33 to flip, so as to switch the two rewinding shafts 21 on the upper and lower sides. After the two rewinding shafts 21 are switched, the user only needs to cut the film, and then the film can be wound around the new rewinding shaft 21 without stopping the machine. During this process, through the synchronous rotation of a pair of transmission gears 35 and the high-precision gear meshing transmission, the relative positions of the two end parts of the rewinding shaft 21 do not shift, ensuring that the length direction of the rewinding shaft 21 is always aligned with the width direction of the film, thereby avoiding the winding failure caused by the deviation of the above two directions.

[0058] Thereafter, a pair of displacement mechanisms respectively drive a pair of auxiliary support devices 5 to move to the lower sides of the two end parts of the core, and the auxiliary support device 5 raises the lifting table 52 to support the core. The corresponding clamping device 4 controls the clamping crankshaft 44 to disengage from the clamping groove 214 on the lower rewinding shaft 21, and the user extracts the rewinding shaft 21 from the first opening, thereby completing the operations of changing the roll and unloading the roll.

[0059] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements. The scope of protection required by the present invention is defined by the appended claims, the specification and their equivalents.

Claims

1. A film rewinder, characterized in that, Comprising a frame, a winding mechanism and a turning mechanism, the turning mechanism comprising: A first turntable rotatably mounted on the frame, and a first outer peripheral gear disposed on the outer peripheral wall surface of the first turntable; A second turntable disposed opposite to the first turntable left and right and rotatably mounted on the frame, and a second outer peripheral gear disposed on the outer peripheral wall surface of the second turntable; A turning shaft extending in the left and right directions and rotatably supported on the frame; A pair of transmission gears disposed opposite to each other left and right, both of the pair of transmission gears fixedly mounted on the turning shaft and respectively meshing with the first outer peripheral gear and the second outer peripheral gear; and a turning motor drivingly connected to the turning shaft and capable of driving the turning shaft to rotate; The winding mechanism comprising: A pair of winding shafts extending in the left and right directions, each of the winding shafts rotatably supported on the first turntable and the second turntable; and at least one winding motor drivingly connected to the pair of winding shafts and capable of driving the winding shafts to rotate; The described winding mechanism further includes a pair of rotating bodies extending in the left-right direction. Each rotating body is rotatably supported on the second turntable. The pair of winding shafts are respectively connected to the pair of rotating bodies and can rotate synchronously with the corresponding rotating bodies. At least one winding motor is drivingly connected to the pair of rotating bodies. The winding mechanism further includes a mounting bracket fixedly installed on the frame and an intermediate rotating shaft rotatably supported on the mounting bracket. The intermediate rotating shaft has a double-tube structure. The winding mechanism is provided with a first winding motor and a second winding motor. The first winding motor and the second winding motor are respectively drivingly connected to a pair of the rotating bodies via the intermediate rotating shaft. The winding shaft includes a second support portion at one end and engaging teeth surrounding the second support portion. The second support portion protrudes axially outward relative to the engaging teeth. A support groove adapted to the second support portion and docking teeth surrounding the support groove are arranged on one side end of the rotating body close to the winding shaft. The second support portion engages with the support groove, and the engaging teeth engage with the docking teeth. The winding shaft includes a first support portion at one end. A pair of third interfaces are provided on the first turntable. The first support portion is rotatably supported on the third interfaces. The frame is provided with a first opening for the first turntable to be exposed to the outside. The first support portion has the maximum radial length of the winding shaft and is exposed from the first opening so that the winding shaft can be drawn out from the first opening. A clamping groove adjacent to the first support portion is further provided on the winding shaft. The film winding machine further includes a pair of clamping devices installed at the first turntable. Each clamping device has a clamping crankshaft adapted to and movable in the clamping groove to lock and unlock the winding shaft. The film winding machine further includes a pair of auxiliary support devices provided at the bottom. The auxiliary support device includes a support cylinder and a lifting platform drivingly connected to the support cylinder. The support cylinder can drive the lifting platform to move up and down to support the wound film roll.

2. The film rewinder according to claim 1, characterized in that, The described auxiliary support device is installed on a displacement mechanism. The displacement mechanism can drive the auxiliary support device to move back and forth in the left-right direction.

3. The film rewinding machine according to claim 1, wherein The flipping mechanism further includes a fixing member fixedly installed on the frame. The flipping shaft is sleeved inside the fixing member and rotatably supported on the fixing member.

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