Winding machine for film production

Abstract

A winding machine for film production comprises a rack and a rotary winding mechanism, the rack comprises a first mounting seat and a second mounting seat which are oppositely arranged, the rotary winding mechanism drives a film roll core to rotate, the winding machine further comprises a roll loading and unloading mechanism, one end of the rotary winding mechanism is connected with the first mounting seat, and the other end of the rotary winding mechanism is connected with the second mounting seat. The other end of the rotary winding mechanism is connected with the second mounting base through the roll loading and unloading mechanism, and the roll loading and unloading mechanism moves left and right in the axis direction of the thin film roll core so as to be matched with the rotary winding mechanism to load and unload the thin film roll core. Compared with the prior art, the technical scheme provided by the utility model has the advantages that the driving mode is simple, disordered cables do not need to be assembled, the film reel is convenient to assemble and disassemble, labor-consuming operation is not needed, a film roll core can be supported on two sides to improve the bearing capacity, the structure is simple, the cost is low, the safety coefficient is high, and the occupied space is small.

Description

Technical Field

[0001] The utility model relates to the field of winding machines, in particular to a winding machine for film production. Background Art

[0002] Auxiliary winders are commonly used machines in film production. Through auxiliary winders, the film on the production line can be wound. They are mainly used when the film production line is shut down, started up, or when a production failure occurs. The frequency of use is about 1 to 3 times a day for each production line. At present, imported auxiliary winders are basically driven by variable frequency motors, so it is also necessary to set up power cables and control cables from the power distribution room to the site, resulting in excessive costs, chaos on the site, and easy to cause safety accidents. In addition, imported auxiliary winders also basically use a single-sided supported winding shaft, resulting in insufficient bearing capacity of the winding shaft and even causing the winder to overturn. Similar products can refer to the Chinese invention application with application number CN117819258A, entitled "A film winding device that is easy to fix quickly", which discloses: comprising a winding frame (1), a winding shaft (2) is rotatably mounted on one side wall of the winding frame (1); a paper tube core (3) is mounted on the winding shaft (2), and a film (4) is wound on the outer surface of the paper tube core (3); wherein foam (31) is fixed on the outer surface of the paper tube core (3); at least one limiting fixing mechanism (5) is installed on the inner side of the winding shaft (2) through a pneumatic component, and a guide groove (22) is opened on the outer surface of the winding shaft (2) for the limiting fixing mechanism (5) to move, and when the paper tube core (3) is fixed, the pneumatic component pushes the limiting fixing mechanism (5) to move toward the paper tube core (3). In this application, the motor (7) drives the winding shaft (2) to rotate via the speed reduction belt (8), and the winding shaft (2) is rotatably installed on one side of the winding mechanism (1), which has the various problems mentioned above.

[0003] Therefore, many domestic manufacturers have begun to improve the winding machine to address the above problems. For example, the Chinese utility model patent with the authorization announcement number CN209097840U, entitled "A winding structure of a film printing machine", discloses: comprising a hydraulic transmission seat (2), a winding frame seat (3) is arranged on the right side of the hydraulic transmission seat (2), and a brake seat (4) is arranged on the right side of the winding frame seat (3). The motor (28) is connected to the plunger pump (25), and the plunger pump (25) is connected to the oil tank (26). The hydraulic motor (29) is equipped with an oil pipeline, and the oil pipeline is respectively connected to the plunger pump (25) and the oil tank (26). The rotating shaft of the hydraulic motor (29) is connected to the input shaft of the reducer (27), and the driving spindle (210) is connected to the output shaft of the reducer (27). The motor (28), the plunger pump (25), the oil tank (26), the hydraulic motor (29) and the reducer (27) cooperate to drive the driving spindle (210) to achieve transmission. Although the technical solution of the utility model adopts the method of supporting the driving main shaft (210) on both sides, it still has the problems of complex structure, inability to quickly and conveniently load and unload the film reel, and too many main shaft driving methods.

[0004] For another example, the Chinese invention application with application publication number CN115008778A, entitled A PET film automated production line, discloses: both ends of the upper surface of the mounting base plate (91) are fixedly connected with a push cylinder (92), and the upper surface of the push cylinder (92) is fixedly connected with a mounting seat (93). The surface of the mounting seat (93) is rotatably connected with a mounting ring (94) via a rotating shaft, and a driving cavity (941) is provided inside the mounting ring (94), and a rotating groove (942) is provided through the inner top wall of the driving cavity (941), and the inner wall of the rotating groove (942) is rotatably connected with a rotating ring (95) via a bearing. A spiral groove seat (951) is fixedly connected to one side surface of the rotating ring (95), and a rotating tooth (952) extending into the interior of the driving cavity (941) is fixedly connected to the other side surface of the rotating ring (95). A driving bevel gear (943) is arranged inside the driving cavity (941), and the outer surface of the driving bevel gear (943) meshes with the outer surface of the rotating tooth (952). A driving motor (96) is fixedly mounted on the outer surface of the mounting ring (94) via a connecting plate. The outer surface of the output shaft of the driving motor (96) is connected to the outer surface of the output shaft via a coupling and a shaft passing through the driving cavity (941). The rotating shaft is fixedly connected to the inner wall of the driving bevel gear (943), the outer surface of the spiral groove seat (951) is rotatably connected with a telescopic block (97), the surface of the telescopic block (97) is provided with a limited sliding hole (971), the outer surface of the rotating ring (95) is provided with a limited sliding groove (953) in a ring array, the outer surface of the telescopic block (97) is slidably connected to the inner wall of the limited sliding groove (953), the inner side wall of the limited sliding groove (953) is fixedly connected to a limiting ring (954), and the outer surface of the limiting ring (954) is slidably connected to the inner wall of the limiting sliding hole (971). Although the technical solution described in the invention application also adopts the method of supporting the winding roller on both sides, it still needs to use an additional gantry to replace the winding roller, and the driving mechanism structure of the winding roller is complex and multiple transmissions are performed.

[0005] For another example, the Chinese invention patent with application publication number CN108946259A, entitled A winding device for facilitating replacement of film rolls, discloses: comprising a base platform and a winding pneumatic shaft, wherein the winding pneumatic shaft is installed directly above the base platform, the right shaft end of the winding pneumatic shaft is fixedly connected to the shaft end of the winding motor, the left shaft end of the winding pneumatic shaft is a variable diameter shaft end, and the variable diameter shaft end of the winding pneumatic shaft is provided with an air flow hole connected to a cylinder, the cylinder is fixedly installed on a mounting block, and the mounting block is provided with a clamping assembly mounting sleeve The clamping hole of the cylinder, the inner cavity of the sleeve and the variable diameter shaft end of the winding pneumatic shaft are rotatably mounted, and sliding blocks are fixedly welded on the side of the mounting block and located on the upper and lower sides of the sleeve, and the sliding block is slidably assembled and installed on the guide rail, and the guide rail is fixedly installed on the side panel of the left mounting plate, and the left mounting plate is arranged on the rear side of the winding pneumatic shaft. A mobile pallet is provided on the left side of the base platform, and a vertical pole is vertically fixed on the mobile pallet, and a cross bar is vertically fixed on the vertical pole, and the cross bar is aligned with the left end of the winding pneumatic shaft. Although the technical solution described in the invention application is designed with a loading and unloading mechanism for the film roll, it still needs to be laboriously moved to make the film roll separate from the winding pneumatic shaft and move it to the mobile pallet through the connecting ring and the sleeve, which is inconvenient, time-consuming and laborious to operate. Utility Model Content

[0006] In view of the shortcomings of the prior art, the utility model provides a film production winder with a simple driving method that does not require the installation of messy cables, is easy to load and unload film reels without laborious operation, can support the film core on both sides to improve the bearing capacity, has a simple structure, low cost, high safety factor, and occupies a small space.

[0007] The utility model mainly adopts the following technical solutions:

[0008] A winding machine for film production includes a frame and a rotating winding mechanism, the frame includes a first mounting seat and a second mounting seat arranged opposite to each other, the rotating winding mechanism drives the film roll core to rotate, and also includes a loading and unloading roll mechanism, one end of the rotating winding mechanism is connected to the first mounting seat, and the other end of the rotating winding mechanism is connected to the second mounting seat through the loading and unloading roll mechanism, and the loading and unloading roll mechanism moves left and right along the axial direction of the film roll core to cooperate with the rotating winding mechanism to realize the loading and unloading of the film roll core.

[0009] Among them, the rotating winding mechanism includes a tensioning cam and a pneumatic motor, one end of the film roll core is mounted on the tensioning cam, and the loading and unloading winding mechanism includes a matching cam, the other end of the film roll core is rotatably mounted on the matching cam, and the tensioning cam drives the film roll core to rotate under the drive of the pneumatic motor.

[0010] Wherein, the rotary winding mechanism also includes a pneumatic regulating valve, the pneumatic regulating valve is connected to the pneumatic motor, the pneumatic motor is fixed on the first mounting seat through fasteners, and the pneumatic regulating valve is also fixed on the first mounting seat.

[0011] Wherein, the pneumatic motor includes a rotating shaft, the tensioning cam includes a sleeve and a rotating ring seat, the rotating ring seat is mounted on the sleeve via a rolling bearing, the rotating shaft passes through the center hole of the sleeve and is circumferentially fixed to the sleeve, the outer peripheral wall of the sleeve is formed with a top protrusion, and a tensioning block that cooperates with the top protrusion is radially movably provided on the rotating ring seat, the sleeve rotates circumferentially relative to the rotating ring seat under the drive of the rotating shaft, and when the top protrusion rotates to the tensioning block, the tensioning block is lifted up so that the tensioning block radially protrudes out of the rotating ring seat.

[0012] Among them, the top protrusions are circumferentially distributed at equal intervals at one end of the outer wall of the sleeve, and a mounting ring and a limiting ring arranged adjacent to the mounting ring are also formed on the outer wall of the sleeve. The rolling bearing is mounted on the mounting ring and the rolling bearing is axially limited by the limiting ring.

[0013] Wherein, the longitudinal cross-section of the sleeve at the top protrusion is a Reuleaux triangle.

[0014] Wherein, fan-shaped fixing blocks are arranged at equal intervals on the rotating ring seat, radial channels are formed between adjacent fixing blocks, and the tensioning block is at least partially installed in the radial channel.

[0015] Among them, the tensioning block is overall in the shape of a crossbow, and the tensioning block includes a linkage foot and a top arc. The linkage foot is installed in the radial channel. When the top protrusion lifts the linkage foot, the top arc radially protrudes from the rotating ring seat and is pressed against the inner wall of the film roll core.

[0016] Among them, the tensioning cam also includes a limit end cover covered on the rotating ring seat, the inner side surface of the limit end cover forms a limit groove, and the linkage foot is fixedly connected to a limit column. When the linkage foot is lifted by the top protrusion, the limit column moves radially outward in the limit groove and finally abuts against the groove wall of the limit groove, thereby limiting the continued movement of the linkage foot and forming a barrier to the circumferential rotation of the top protrusion relative to the rotating ring seat.

[0017] Among them, the linkage foot is also formed with a wheel groove on the side facing the shaft sleeve, and the roller is installed in the wheel groove by passing through a mounting beam on the groove wall of the wheel groove. The roller rolls along the outer peripheral wall of the shaft sleeve and lifts the linkage foot through the top protrusion. When the limiting column abuts against the groove wall of the limiting groove, the roller forms a barrier to the top protrusion, thereby driving the rotating ring seat to rotate.

[0018] Among them, the loading and unloading roll mechanism also includes a hydraulic cylinder fixed on the second mounting seat and a telescopic rod connected to the matching cam. The telescopic rod moves left and right along the axial direction of the film roll core under the drive of the hydraulic cylinder to drive the matching cam to insert or withdraw from the film roll core.

[0019] Wherein, a bearing is installed between the telescopic rod and the matching cam or a bearing is sleeved on the matching cam, so that the other end of the film winding core can rotate normally under the drive of the tensioning cam.

[0020] Wherein, the loading and unloading roll mechanism also includes a connecting rod and a limiting sleeve, the telescopic rod is connected to the piston rod of the hydraulic cylinder through the connecting rod, the limiting sleeve is sleeved on the telescopic rod, and the limiting sleeve is fixed to the second mounting seat through a fastener.

[0021] Wherein, the roll loading and unloading mechanism further comprises a pneumatic control valve, the pneumatic control valve is connected to the hydraulic cylinder, and the pneumatic control valve is fixedly mounted on the second mounting seat.

[0022] Wherein, the frame further includes a connecting plate, and the first mounting seat and the second mounting seat are both arranged on the connecting plate.

[0023] According to the technical scheme described in the utility model, the following beneficial effects are achieved: one end of the rotary winding mechanism is connected to the first mounting seat, and the other end is connected to the second mounting seat through the loading and unloading winding mechanism, and the load-bearing capacity of the rotary winding mechanism is improved by adopting a double-sided support method; the loading and unloading winding mechanism cooperates with the rotary winding mechanism by moving left and right to realize the loading and unloading of the film reel, without the need for laborious pushing operations, and the loading and unloading actions are quick and simple; the tensioning cam can abut against the inner wall of the film core to prevent the film core from falling off and cooperate with the matching cam to rotate the film core under the drive of the pneumatic motor; a pneumatic motor connected to a pneumatic regulating valve is used to drive the film core to rotate, and a hydraulic cylinder connected to a pneumatic control valve is used to drive the telescopic rod to move left and right. The driving method is simple, no confusing cables need to be installed, and no training on electrical knowledge and operating systems is required, which saves time and effort and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the winding machine structure for this application.

[0025] Figure 2 for Figure 1 Schematic diagram of the winder structure with the protective cover and film core removed.

[0026] Figure 3 for Figure 2 Schematic diagram of the exploded structure of the rotating winding mechanism.

[0027] Figure 4 for Figure 3 Schematic diagram of the mid-side structure.

[0028] Figure 5 for Figure 2 Schematic diagram of the tensioning cam structure shown in the AA section.

[0029] Figure 6 for Figure 3 Enlarged view of part B in the middle.

[0030] Figure 7 for Figure 4 Enlarged view of part D in the middle.

[0031] Figure 8 for Figure 2 Schematic diagram of the loading and unloading roll mechanism structure shown in section EE.

[0032] 1 frame, 11 first mounting seat, 12 second mounting seat, 13 connecting plate, 14 protective cover, 2 rotary winding mechanism, 21 tensioning cam, 211 shaft sleeve, 2111 mounting ring, 2112 limiting ring, 212 rotating ring seat, 2121 fixing block, 213 limiting end cover, 2130 limiting groove, 214 rear cover, 22 pneumatic motor, 221 rotating shaft, 23 pneumatic regulating valve, 3 loading and unloading winding mechanism, 31 matching cam, 311 limiting platform, 32 hydraulic cylinder, 33 telescopic rod, 34 connecting rod, 35 limiting sleeve, 36 pneumatic control valve, C film winding core, 4 fasteners, 5 rolling bearings, M top convex, N tensioning block, N1 linkage foot, N2 top arc, H radial channel, 6 limiting column, 7 roller, 8 mounting beam, 9 bearing. DETAILED DESCRIPTION

[0033] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0034] See also Figure 1 , 2As shown, a film production winding machine includes a frame 1 and a rotating winding mechanism 2, wherein the frame 1 includes a first mounting seat 11 and a second mounting seat 12 arranged opposite to each other, the rotating winding mechanism 2 drives the film core C to rotate, and also includes a loading and unloading roll mechanism 3, one end of the rotating winding mechanism 2 is connected to the first mounting seat 11, and the other end of the rotating winding mechanism 2 is connected to the second mounting seat 12 through the loading and unloading roll mechanism 3, and the loading and unloading roll mechanism 3 moves left and right along the axis direction of the film core C to cooperate with the rotating winding mechanism 2 to realize the loading and unloading of the film core C. In the present application, one end of the rotating winding mechanism is connected to the first mounting seat, and the other end is connected to the second mounting seat through the loading and unloading roll mechanism, so that the rotating winding mechanism is supported on both sides, so that it can withstand a higher load and is not prone to tipping over. In the present application, the loading and unloading action of the film core is realized by moving the loading and unloading roll mechanism left and right to cooperate with the rotating winding mechanism, which is simple and convenient to operate, does not require laborious pushing, saves time and labor, and has a simple structure, small space occupation, and is easy to move.

[0035] See also Figures 2 to 4 As shown in Figures 8 and 9, the rotary winding mechanism 2 includes a tensioning cam 21 and a pneumatic motor 22. One end of the film core C is mounted on the tensioning cam 21. The loading and unloading roll mechanism 3 includes a matching cam 31. The other end of the film core C is rotatably mounted on the matching cam 31. The tensioning cam 21 drives the film core C to rotate under the drive of the pneumatic motor 22. In the present application, one end of the film core is mounted on the tensioning cam, and the other end is rotatably mounted on the matching cam, which is convenient for fixing the standard part of the film core to ensure higher stability in subsequent rotation. In the present application, a pneumatic motor is used to drive the tensioning cam. By using compressed air (connected to an air compressor) as a power source, it not only avoids laying complex cable lines, but also does not require special electricity safety training, which is easy to use and safer. Preferably, in order to better fit into the other end of the film core M, the matching cam 31 is formed with a frustoconical outer peripheral surface, so as to adapt to film cores M of different thicknesses. Preferably, in order to limit the other end of the film core M, a limiting platform 311 is formed in cooperation with the cam 31 .

[0036] See also Figures 1 to 4 As shown, the rotary winding mechanism 2 also includes a pneumatic regulating valve 23, which is connected to the pneumatic motor 22. The pneumatic motor 22 is fixedly mounted on the first mounting seat 11 through a fastener 4, and the pneumatic regulating valve 23 is also fixedly mounted on the first mounting seat 11. In the present application, the pneumatic motor uses compressed air as a power source and adjusts the pressure and volume of the compressed air through the pneumatic regulating valve, which can easily realize stepless adjustment of the torque and speed of the pneumatic motor, and especially can realize automatic speed matching under constant torque, thereby ensuring that the film is rolled more tightly and evenly.

[0037] See also Figures 3 to 6As shown, the pneumatic motor 22 includes a rotating shaft 221, and the tensioning cam 21 includes a sleeve 211 and a rotating ring seat 212. The rotating ring seat 212 is sleeved on the sleeve 211 through a rolling bearing 5. The rotating shaft 221 penetrates into the center hole of the sleeve 211 and is circumferentially fixed to the sleeve 211. The outer peripheral wall of the sleeve 211 is formed with a top protrusion M. The rotating ring seat 212 is radially and movably provided with a tensioning block N that matches the top protrusion M. The sleeve 211 is driven by the rotating shaft 221 to rotate circumferentially relative to the rotating ring seat 212. When the top protrusion M rotates to the tensioning block N, the tensioning block N is lifted so that the tensioning block N radially protrudes from the rotating ring seat 212. Preferably, the outer wall surface of the rotating shaft 221 and the inner wall surface of the center hole of the sleeve 211 are both provided with axially extending splines. After the rotating shaft 221 penetrates into the center hole of the sleeve 211, it is circumferentially positioned by the splines. In the present application, the tension block is radially movable on the rotating ring seat, including moving in a straight line along the radial direction of the tension cam and moving in a curve along the radial direction of the tension cam. Preferably, the number of the tension block N is at least one. In the present application, the rotating shaft is eccentrically arranged on one side end face of the starter motor, so that the internal sprocket of the pneumatic motor can drive the rotating shaft to rotate.

[0038] See also Figure 3 , 4 As shown, the top protrusions M are circumferentially distributed at equal intervals on one end of the outer peripheral wall of the sleeve 211. The outer peripheral wall of the sleeve 211 is also formed with a mounting ring 2111 and a limiting ring 2112 arranged adjacent to the mounting ring 2111. The rolling bearing 5 is sleeved on the mounting ring 2111 and the rolling bearing 5 is axially limited by the limiting ring 2112. In the present application, the top protrusions M are circumferentially distributed at equal intervals on one end of the outer peripheral wall of the sleeve, which can ensure that the tensioning block matched therewith can abut against the inner side wall of the film roll core in all directions. In the present application, a limiting ring is arranged adjacent to the mounting ring, which can effectively ensure that the rolling bearing does not slip axially. Preferably, the tensioning cam 21 also includes an annular rear cover 214, which is mounted on the limiting ring and covers the rear end of the rotating ring seat to further limit the rolling bearing.

[0039] See also Figure 4 As shown, the longitudinal section of the sleeve 211 at the top protrusion M is a Reuleaux triangle. This structural design is conducive to the tension block sliding on the outer peripheral wall of the sleeve 211 with the top protrusion M without violent movement, so the movement of radially protruding from the rotating ring seat is softer, making the tension block more closely fit the inner wall of the film core.

[0040] See also Figure 4As shown, the rotating ring seat 212 is provided with fan-shaped fixed blocks 2121 at equal intervals, and a radial channel H is formed between adjacent fixed blocks 2121, and the tension block N is at least partially installed in the radial channel H. This structural design can limit the movement trajectory of the tension block through the radial channel, thereby ensuring that the movement trajectory of the tension block protruding from the rotating ring seat will not deviate. Preferably, the radial channel H includes extending in a straight line along the radial direction of the tension cam, and also includes extending in a curve along the radial direction of the tension cam, as long as the tension block is allowed to protrude from the rotating ring seat.

[0041] See also Figure 3 , 4 As shown, the tension block N is in a crossbow shape as a whole, and includes a linkage foot N1 and a top arc N2. The linkage foot N1 is installed in the radial channel H. When the top protrusion M lifts the linkage foot N1, the top arc N2 radially protrudes from the rotating ring seat 212 and is pressed against the inner side wall of the film core C. Preferably, the top arc N2 is a smooth curved surface that fits tightly against the inner side wall of the film core.

[0042] See also Figure 5 As shown, the tensioning cam 21 also includes a limit end cover 213 covered on the rotating ring seat 212, and the inner side surface of the limit end cover 213 forms a limit groove 2130. The limiting column 6 is fixedly connected to the linkage foot N1. When the linkage foot N1 is lifted by the top protrusion M, the limit column 6 moves radially outward in the limit groove 2130 and finally abuts against the groove wall of the limit groove 2130, thereby limiting the continued movement of the linkage foot N1 and forming a barrier to the circumferential rotation of the top protrusion M relative to the rotating ring seat 212. In the present application, the limiting column abuts against the groove wall of the limiting groove, which, on the one hand, limits the continued radial outward movement of the linkage foot, and on the other hand, the restricted linkage foot in turn blocks the top end of the top protrusion from passing over the bottom end of the linkage foot. Therefore, the linkage foot inserted in the radial channel can be driven to rotate by the top protrusion. This design has a clever structure, is easy to disassemble and repair, and provides a buffer for the rotation of the tension block (that is, the top end of the top protrusion needs to move to the bottom end of the linkage foot to drive the linkage foot to rotate). Preferably, the bottom end of the linkage foot N1 is an arc surface convex toward the sleeve. In the present application, the radial outward movement of the limiting column includes moving in a straight line along the radial direction of the limiting end cover, and also includes moving in a curve along the radial direction of the limiting end cover.

[0043] See also Figure 7As shown, the linkage foot N1 is also formed with a wheel groove on the side facing the shaft sleeve 211, and the roller 7 is installed in the wheel groove through the mounting beam 8 penetrating the groove wall of the wheel groove. The roller 7 rolls along the outer peripheral wall of the shaft sleeve 211 and lifts the linkage foot N1 through the top protrusion M. When the limiting column 6 abuts against the groove wall of the limiting groove 2130, the roller 7 forms a block to the top protrusion M, thereby driving the rotating ring seat 212 to rotate. In the present application, the roller is installed in the wheel groove through the mounting beam, which can ensure that the roller moves more smoothly on the outer peripheral wall of the shaft sleeve with the top protrusion, provide better buffering for the action of starting the rotation of the tension block, prevent the breakage of the components caused by excessive action, and extend the service life of the product.

[0044] See also Figure 2 , 8 As shown, the loading and unloading roll mechanism 3 further includes a hydraulic cylinder 32 fixedly mounted on the second mounting seat 12 and a telescopic rod 33 connected to the matching cam 31. The telescopic rod 33 moves left and right along the axis direction of the film roll core C under the drive of the hydraulic cylinder 32 to drive the matching cam 31 to insert into or withdraw from the film roll core C. Preferably, the telescopic rod 33 can be a piston rod of the hydraulic cylinder, or can be other components independent of the hydraulic cylinder.

[0045] See also Figure 8 As shown, a bearing 9 is installed between the telescopic rod 33 and the matching cam 31 or a bearing 9 is sleeved on the matching cam 31, so that the other end of the film core C can rotate normally under the drive of the tensioning cam 21. In the present application, a bearing can be installed between the telescopic rod and the matching cam, or a bearing can be sleeved on the surface of the matching cam and then engaged with the inner side wall of the film core through the bearing.

[0046] See also Figure 2 , 8 As shown, the loading and unloading roll mechanism 3 further includes a connecting rod 34 and a limiting sleeve 35. The telescopic rod 33 is connected to the piston rod of the hydraulic cylinder 32 through the connecting rod 34. The limiting sleeve 35 is sleeved on the telescopic rod 33. The limiting sleeve 35 is fixed to the second mounting seat 12 through a fastener 4. In the present application, by sleeved the telescopic rod 33 in the limiting sleeve 35, the stability of the telescopic rod 33 can be further ensured, so as to ensure the stability of the action and the support strength for the film reel when the telescopic rod 33 moves left and right.

[0047] See also Figure 1 , 2 As shown, the roll loading and unloading mechanism 3 further includes a pneumatic control valve 36 , which is connected to the hydraulic cylinder 32 and fixedly mounted on the second mounting seat 12 .

[0048] See also Figure 1 , 2As shown, the frame 1 further includes a connecting plate 13, and the first mounting seat 11 and the second mounting seat 12 are both arranged on the connecting plate 13. Preferably, the frame 1 further includes a protective cover 14, which is at least covered above the loading and unloading roll mechanism 3 and is engaged with the second mounting seat 12.

[0049] Although the specific implementation modes of the present invention have been described above, those skilled in the art may modify the present invention without departing from the spirit and principle of the present invention. The protection scope of the present invention is defined by the claims and their equivalents.

Claims

1. A film production winder, comprising a frame and a rotary winding mechanism, wherein the frame comprises a first mounting seat and a second mounting seat arranged opposite to each other, and the rotary winding mechanism drives the film winding core to rotate, characterized in that: It also includes a loading and unloading roll mechanism, one end of the rotating roll mechanism is connected to the first mounting seat, and the other end of the rotating roll mechanism is connected to the second mounting seat through the loading and unloading roll mechanism. The loading and unloading roll mechanism moves left and right along the axial direction of the film roll core to cooperate with the rotating roll mechanism to realize the loading and unloading of the film roll core.

2. The film production winder according to claim 1, characterized in that: The rotary winding mechanism includes a tensioning cam and a pneumatic motor, one end of the film roll core is mounted on the tensioning cam, and the loading and unloading winding mechanism includes a matching cam, the other end of the film roll core is rotatably mounted on the matching cam, and the tensioning cam drives the film roll core to rotate under the drive of the pneumatic motor.

3. The film production winder according to claim 2, characterized in that: The rotary winding mechanism also includes a pneumatic regulating valve, which is connected to the pneumatic motor. The pneumatic motor is fixed on the first mounting seat through fasteners, and the pneumatic regulating valve is also fixed on the first mounting seat.

4. The film production winder according to claim 2 or 3, characterized in that: The pneumatic motor includes a rotating shaft, and the tensioning cam includes a sleeve and a rotating ring seat. The rotating ring seat is mounted on the sleeve via a rolling bearing. The rotating shaft passes through the center hole of the sleeve and is circumferentially fixed to the sleeve. A top protrusion is formed on the outer peripheral wall of the sleeve. A tensioning block that cooperates with the top protrusion is radially movably provided on the rotating ring seat. The sleeve rotates circumferentially relative to the rotating ring seat under the drive of the rotating shaft. When the top protrusion rotates to the tensioning block, the tensioning block is lifted up so that the tensioning block radially protrudes out of the rotating ring seat.

5. The film production winder according to claim 4, characterized in that: The top protrusions are circumferentially distributed at equal intervals at one end of the outer circumferential wall of the sleeve. A mounting ring and a limiting ring arranged adjacent to the mounting ring are also formed on the outer circumferential wall of the sleeve. The rolling bearing is sleeved on the mounting ring and the rolling bearing is axially limited by the limiting ring.

6. The film production winder according to claim 5, characterized in that: The longitudinal cross-section of the sleeve at the top protrusion is a Reuleaux triangle.

7. The film production winder according to claim 5, characterized in that: The rotating ring seat is provided with fan-shaped fixing blocks at equal intervals, radial channels are formed between adjacent fixing blocks, and the tensioning blocks are at least partially installed in the radial channels.

8. The film production winder according to claim 7, characterized in that: The tension block is overall in the shape of a crossbow, and includes a linkage foot and a top arc. The linkage foot is installed in the radial channel. When the top protrusion lifts the linkage foot, the top arc radially protrudes from the rotating ring seat and is pressed against the inner wall of the film roll core.

9. The film production winder according to claim 8, characterized in that: The tensioning cam also includes a limit end cover arranged on the rotating ring seat, the inner side surface of the limit end cover forms a limit groove, and the linkage foot is fixedly connected to a limit column. When the linkage foot is lifted by the top protrusion, the limit column moves radially outward in the limit groove and finally abuts against the groove wall of the limit groove, thereby limiting the continued movement of the linkage foot and forming a barrier to the circumferential rotation of the top protrusion relative to the rotating ring seat.

10. The film production winder according to claim 9, characterized in that: The linkage foot is also formed with a wheel groove on the side facing the shaft sleeve, and the roller is installed in the wheel groove by passing through a mounting beam on the groove wall of the wheel groove. The roller rolls along the outer peripheral wall of the shaft sleeve and lifts the linkage foot through the top protrusion. When the limiting column abuts against the groove wall of the limiting groove, the roller forms a barrier to the top protrusion, thereby driving the rotating ring seat to rotate.

11. The film production winder according to any one of claims 2, 3, 5 to 10, characterized in that: The loading and unloading roll mechanism also includes a hydraulic cylinder fixed on the second mounting seat and a telescopic rod connected to the matching cam. The telescopic rod moves left and right along the axial direction of the film roll core under the drive of the hydraulic cylinder to drive the matching cam to insert or withdraw from the film roll core.

12. The film production winder according to claim 11, characterized in that: A bearing is installed between the telescopic rod and the matching cam, or a bearing is sleeved on the matching cam, so that the other end of the film winding core can rotate normally under the drive of the tensioning cam.

13. The film production winder according to claim 11, characterized in that: The loading and unloading roll mechanism also includes a connecting rod and a limiting sleeve, the telescopic rod is connected to the piston rod of the hydraulic cylinder through the connecting rod, the limiting sleeve is sleeved on the telescopic rod, and the limiting sleeve is fixed on the second mounting seat through a fastener.

14. The film production winder according to claim 11, characterized in that: The roll loading and unloading mechanism further comprises a pneumatic control valve, the pneumatic control valve is connected to the hydraulic cylinder, and the pneumatic control valve is fixedly mounted on the second mounting seat.

15. The film production winder according to any one of claims 2, 3, 5 to 10, 12 to 14, characterized in that: The frame further comprises a connecting plate, and the first mounting seat and the second mounting seat are both arranged on the connecting plate.

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