A transport device for synchronous film roll collection

Abstract

The present invention relates to the technical field of transport devices, and in particular to a transport device for synchronous film roll collection, comprising: a trolley, a push handle is installed on the upper surface of the trolley; a tensioning shaft, the tensioning shaft comprises a shaft body and a tensioning block, the tensioning block is slidably arranged on the surface of the shaft body; a driving assembly, the driving assembly is connected to the tensioning shaft, and the tensioning block is driven to slide by the driving assembly; a lifting assembly, the lifting assembly is connected between the tensioning shaft and the trolley, and the tensioning shaft is lifted and lowered by the lifting assembly; a lifting assembly, the lifting assembly comprises a telescopic part and a lifting part, the telescopic part is connected to the tensioning shaft, and can be extended from the bottom end of the tensioning shaft, and the lifting part can automatically lift the bottom end of the film roll when the end of the telescopic part extends out of the bottom end of the film roll. The present invention can prevent the film roll from detaching, effectively ensure the safety of transportation, and it is no longer necessary to place the tensioning shaft horizontally, thereby reducing the occupied space and facilitating transportation.

Description

Technical Field

[0001] The invention relates to the technical field of transport devices, and in particular to a transport device for synchronous film roll collection. Background Art

[0002] Film roll refers to a product that is made by winding a film into a roll form. It is widely used in packaging, industrial processing, food processing and other fields.

[0003] The simultaneous processing of multiple film rolls is called synchronous film rolling. After the film rolls are processed, they need to be transported to the designated location using a transport device. At present, the conventional transport device is mainly composed of a cart and a tensioning shaft installed on the cart that can move up and down. When in use, move the cart, and control the tensioning shaft to move up and down to insert into the middle of the film roll, then control the tensioning shaft to tighten in the middle of the film roll, and finally move the cart to drive the film rolls to move synchronously.

[0004] The above-mentioned film roll transport device has a simple structure and is easy to use, but still has certain defects, namely:

[0005] The film roll and the tensioning shaft are fixed by friction, and it is easy to slip and detach during transportation, causing accidents. At present, most of them rotate the tensioning shaft to a horizontal state after the tensioning shaft tightens the film roll. However, this takes up a lot of site space and brings inconvenience to transportation. Generally speaking, there are still many inconveniences. Summary of the invention

[0006] In order to overcome the deficiencies of the prior art, the present invention provides a transport device for synchronous film roll collection.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: a transport device for synchronous film roll collection, comprising: a trolley, a push handle is installed on the upper surface of the trolley; a tensioning shaft, the tensioning shaft comprises a shaft body and a tensioning block, the tensioning block is slidably arranged on the surface of the shaft body; a driving assembly, the driving assembly is connected to the tensioning shaft, and the tensioning block is driven to slide by the driving assembly; a lifting assembly, the lifting assembly is connected between the tensioning shaft and the trolley, and the lifting and lowering of the tensioning shaft is controlled by the lifting assembly; a lifting assembly, the lifting assembly comprises a telescopic part and a lifting part, the telescopic part is connected to the tensioning shaft and can be extended from the bottom end of the tensioning shaft, the lifting part is installed at the end of the telescopic part away from the tensioning shaft, and the lifting part can automatically lift the bottom end of the film roll when the end of the telescopic part extends out of the bottom end of the film roll.

[0008] As a preferred technical solution of the present invention, the driving assembly includes a frame plate, a first motor, a screw rod and a resist column. The frame plate is fixedly connected to the movable end of the lifting assembly, the shaft body is fixedly installed on the lower surface of the frame plate, the first motor is fixedly installed on the frame plate, the screw rod is rotatably installed under the frame plate, and the end of the screw rod extends into the middle of the shaft body. A transmission assembly is connected between the first motor and the screw rod, and the first motor can drive the screw rod to rotate through the transmission assembly. The resist column is slidably installed inside the shaft body, and the resist column is threadedly connected to the surface of the screw rod. At the same time, the surface of the resist column close to the expansion block and the surface of the expansion block close to the resist column are both wedge-shaped surfaces.

[0009] As a preferred technical solution of the present invention, the column and the screw rod are both made of magnetic materials, and the column and the screw rod can attract the expansion block. The transmission assembly includes a first gear and a second gear. The first gear is connected to the output shaft of the first motor and can rotate synchronously therewith. The second gear is fixedly connected to the screw rod, and the first gear can mesh with the second gear.

[0010] As a preferred technical solution of the present invention, the lifting assembly includes a frame, a lifting screw, a guide rod, a lifting seat, a counterweight and a second motor. The frame is fixedly mounted on the surface of the trolley, the lifting screw is rotatably mounted in the middle of the frame, the guide rod is fixedly mounted in the middle of the frame, the lifting seat is threadedly mounted on the surface of the lifting screw, and the lifting seat sliding sleeve is arranged on the surface of the guide rod. At the same time, the lifting seat is fixedly connected to the frame plate, the counterweight is fixedly mounted on the surface of the trolley, the second motor is fixedly mounted on the frame, and the second motor is coaxially connected to the lifting screw and can drive the lifting screw to rotate synchronously.

[0011] As a preferred technical solution of the present invention, the telescopic part includes a telescopic sleeve and a transmission shaft, the telescopic sleeve is threadedly installed inside the shaft body, the transmission shaft is rotatably inserted in the middle of the screw rod, and the telescopic sleeve is slidably sleeved on the surface of the transmission shaft and can rotate synchronously with the transmission shaft.

[0012] As a preferred technical solution of the present invention, the lifting assembly also includes a power assembly, which includes a third gear, a guide column, an adjusting cylinder and a connecting plate. The third gear is fixedly mounted on the surface of the transmission shaft, and the third gear can engage with the first gear. The guide column is rotatably mounted on the frame plate and is coaxially connected to the output shaft of the first motor. The first gear shaft is slidably sleeved on the guide column and can rotate synchronously with the guide column. The adjusting cylinder is fixedly mounted on the frame plate, one end of the connecting plate is fixedly connected to the movable end of the adjusting cylinder, and the other end is rotatably sleeved on the first gear shaft and can drive the first gear to rise and fall synchronously.

[0013] As a preferred technical solution of the present invention, the lifting part includes a sliding column, a first connecting rod, a second connecting rod, a slip ring, a first retaining ring, a second retaining ring and a compression spring. The sliding column is slidably installed at the end of the telescopic sleeve away from the shaft body, the end of the first connecting rod rotates with the end of the telescopic sleeve, one end of the second connecting rod is rotationally connected to the surface of the sliding column, and the other end is rotationally connected to the middle of the first connecting rod. The slip ring is fixedly installed on the surface of the sliding column and slidably installed in the middle of the telescopic sleeve. The first retaining ring and the second retaining ring are both fixedly installed inside the telescopic sleeve and are respectively connected to the upper and lower ends of the slip ring. The compression spring is installed between the first retaining ring and the slip ring.

[0014] As a preferred technical solution of the present invention, the lifting part also includes a control column, a threaded seat, a connecting ring, a pin and a slot. The control column is slidably installed in the middle of the sliding column, the threaded seat is rotatably installed in the telescopic sleeve, and the sliding column thread is inserted in the middle of the threaded seat. At the same time, the threaded connection between the sliding column and the threaded seat is not self-locking. The connecting ring is fixedly installed on the surface of the control column, the pin is fixedly installed on the lower surface of the connecting ring, the slot is opened on the upper surface of the threaded seat, and the pin can be inserted into the slot. A limiting sleeve is fixedly installed in the middle of the telescopic sleeve, and the control column is slidably inserted in the limiting sleeve.

[0015] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0016] 1. During the entire use process, the entire device can automatically support the bottom end of the film roll through the lifting component, thereby preventing the film roll from detaching and effectively ensuring transportation safety. In addition, it is no longer necessary to place the tensioning shaft horizontally, thereby reducing the occupied space and facilitating transportation.

[0017] 2. During use, the user can control the extension length of the telescopic sleeve to meet the transportation requirements of film rolls of various lengths, which will effectively increase the application range of the entire device.

[0018] 3. During use, after the pin in the lifting assembly is disengaged from the slot, the film roll can be slowly disengaged from the middle of the tensioning shaft under the action of the compression spring until it contacts the ground. This can avoid impact when the film roll is unloaded, further ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle;

[0020] Figure 2 It is a schematic diagram of the second viewing angle of the three-dimensional structure of the present invention;

[0021] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0022] Figure 4For the present invention Figure 2 The enlarged structural diagram at B in the middle;

[0023] Figure 5 This is a schematic diagram of the internal structure of the expansion shaft of the present invention;

[0024] Figure 6 For the present invention Figure 5 The enlarged structural diagram at C in the middle;

[0025] Figure 7 For the present invention Figure 5 The enlarged schematic diagram at D in the middle;

[0026] Figure 8 For the present invention Figure 5 Enlarged schematic diagram at point E in the middle.

[0027] Among them: 1. trolley; 2. push handle; 3. expansion shaft; 301. shaft body; 302. expansion block; 4. frame plate; 5. first motor; 6. screw rod; 7. support column; 8. first gear; 9. second gear; 10. frame; 11. lifting screw; 12. guide rod; 13. lifting seat; 14. counterweight; 15. second motor; 16. telescopic sleeve; 17. transmission shaft; 18. third gear; 19. guide column; 20. adjusting cylinder; 21. connecting plate; 22. sliding column; 23. first connecting rod; 24. second connecting rod; 25. sliding ring; 26. first retaining ring; 27. second retaining ring; 28. compression spring; 29. ​​control column; 30. threaded seat; 31. connecting ring; 32. bayonet; 33. slot; 34. limit sleeve. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.

[0029] Embodiment: Figure 1-8As shown, a transport device for synchronous film roll collection comprises: a trolley 1, a pusher 2 is installed on the upper surface of the trolley 1; a tensioning shaft 3, the tensioning shaft 3 comprises a shaft body 301 and a tensioning block 302, and the tensioning block 302 is slidably arranged on the surface of the shaft body 301; a driving assembly, the driving assembly is connected to the tensioning shaft 3, and the tensioning block 302 is driven to slide by the driving assembly; a lifting assembly, the lifting assembly is connected between the tensioning shaft 3 and the trolley 1, and the lifting and lowering of the tensioning shaft 3 is controlled by the lifting assembly; a lifting assembly, the lifting assembly comprises a telescopic part and a lifting part, the telescopic part is connected to the tensioning shaft 3, and can be extended from the bottom end of the tensioning shaft 3, the lifting part is installed at the end of the telescopic part away from the tensioning shaft 3, and the lifting part can automatically lift the bottom end of the film roll when the end of the telescopic part extends out of the bottom end of the film roll.

[0030] When in use, it is only necessary to move the push cart 1 to align the tensioning shaft 3 with the center of the film roll, and then control the tensioning shaft 3 to move downward through the lifting component to insert it into the center of the film roll, and then drive the tensioning block 302 to slide until the center of the film roll is tightened through the driving component. At this time, lift the tensioning shaft 3, so that the lifting component can extend from the bottom end of the tensioning shaft 3 and then lift it to the bottom end of the film roll, thereby preventing the film roll from detaching.

[0031] The driving assembly includes a frame plate 4, a first motor 5, a screw rod 6 and a support column 7. The frame plate 4 is fixedly connected to the movable end of the lifting assembly, the shaft body 301 is fixedly installed on the lower surface of the frame plate 4, the first motor 5 is fixedly installed on the frame plate 4, the screw rod 6 is rotatably installed under the frame plate 4, and the end of the screw rod 6 extends into the middle of the shaft body 301. A transmission assembly is connected between the first motor 5 and the screw rod 6, and the first motor 5 can drive the screw rod 6 to rotate through the transmission assembly. The support column 7 is slidably installed inside the shaft body 301, and the support column 7 is threadedly connected to the surface of the screw rod 6. At the same time, the surface of the support column 7 close to the expansion block 302 and the surface of the expansion block 302 close to the support column 7 are both wedge-shaped surfaces.

[0032] In this way, it is only necessary to start the first motor 5, and the first motor 5 will drive the screw 6 to rotate through the first gear 8 and the second gear 9. The rotation of the screw 6 will drive the support column 7 to slide, and the sliding of the support column 7 will push the tightening block 302 to slide out from the middle of the shaft 301, thereby tightening the inner wall of the central axis of the film roll.

[0033] The support column 7 and the screw rod 6 are both made of magnetic materials, and the support column 7 and the screw rod 6 can attract the tightening block 302. The transmission assembly includes a first gear 8 and a second gear 9. The first gear 8 is connected to the output shaft of the first motor 5 and can rotate synchronously therewith. The second gear 9 is fixedly connected to the screw rod 6, and the first gear 8 can mesh with the second gear 9. In this way, when the support column 7 moves up and separates from the tightening block 302, it can attract the tightening block 302 to retract.

[0034] The lifting assembly includes a frame 10, a lifting screw 11, a guide rod 12, a lifting seat 13, a counterweight 14 and a second motor 15. The frame 10 is fixedly mounted on the surface of the cart 1, the lifting screw 11 is rotatably mounted in the middle of the frame 10, the guide rod 12 is fixedly mounted in the middle of the frame 10, the lifting seat 13 is threadedly mounted on the surface of the lifting screw 11, and the lifting seat 13 is slidably sleeved on the surface of the guide rod 12, and the lifting seat 13 is fixedly connected to the frame plate 4, the counterweight 14 is fixedly mounted on the surface of the cart 1, and the second motor 15 is fixedly mounted on the frame 10, and the second motor 15 is coaxially connected to the lifting screw 11 and can drive the lifting screw 11 to rotate synchronously.

[0035] In this way, it is only necessary to start the second motor 15 , and the second motor 15 will drive the lifting screw 11 to rotate, thereby driving the lifting seat 13 to move up and down, and the movement of the lifting seat 13 will drive the expansion shaft 3 to move synchronously through the frame plate 4 .

[0036] The telescopic part includes a telescopic sleeve 16 and a transmission shaft 17. The telescopic sleeve 16 is threadedly installed inside the shaft body 301. The transmission shaft 17 is rotatably inserted in the middle of the screw rod 6. At the same time, the telescopic sleeve 16 is slidably sleeved on the surface of the transmission shaft 17 and can rotate synchronously with the transmission shaft 17.

[0037] The lifting assembly also includes a power assembly, which includes a third gear 18, a guide column 19, an adjusting cylinder 20 and a connecting plate 21. The third gear 18 is fixedly mounted on the surface of the transmission shaft 17, and the third gear 18 can engage with the first gear 8. The guide column 19 is rotatably mounted on the frame plate 4 and is coaxially connected to the output shaft of the first motor 5. The rotating shaft of the first gear 8 is slidably sleeved on the guide column 19 and can rotate synchronously with the guide column 19. The adjusting cylinder 20 is fixedly mounted on the frame plate 4, one end of the connecting plate 21 is fixedly connected to the movable end of the adjusting cylinder 20, and the other end is rotatably sleeved on the rotating shaft of the first gear 8 and can drive the first gear 8 to rise and fall synchronously.

[0038] In this way, it is only necessary to adjust the cylinder 20 to drive the first gear 8 to slide so that the first gear 8 engages with the third gear 18. At this time, starting the first motor 5 will drive the transmission shaft 17 to rotate, and the transmission shaft 17 will drive the telescopic sleeve 16 to rotate to extend the telescopic sleeve 16 from the bottom end of the shaft body 301 until the bottom end of the telescopic sleeve 16 extends out of the bottom end of the film roll.

[0039] The lifting part includes a sliding column 22, a first connecting rod 23, a second connecting rod 24, a slip ring 25, a first retaining ring 26, a second retaining ring 27 and a compression spring 28. The sliding column 22 is slidably installed at the end of the telescopic sleeve 16 away from the shaft body 301. The end of the first connecting rod 23 rotates with the end of the telescopic sleeve 16. One end of the second connecting rod 24 is rotationally connected to the surface of the sliding column 22, and the other end is rotationally connected to the middle of the first connecting rod 23. The slip ring 25 is fixedly installed on the surface of the sliding column 22 and slidably installed in the middle of the telescopic sleeve 16. The first retaining ring 26 and the second retaining ring 27 are both fixedly installed inside the telescopic sleeve 16, and are respectively connected to the upper and lower ends of the slip ring 25. The compression spring 28 is installed between the first retaining ring 26 and the slip ring 25.

[0040] In this way, when the bottom end of the telescopic sleeve 16 extends out of the bottom end of the film roll, under the action of the compression spring 28, the slip ring 25 will drive the slide column 22 to slide down, and the slide column 22 will drive the first connecting rod 23 to rotate through the second connecting rod 24, so that it can be unfolded under the bottom end of the film roll, and then the bottom end of the film roll is limited to prevent the film roll from being separated from the tensioning shaft 3.

[0041] The lifting part also includes a control column 29, a threaded seat 30, a connecting ring 31, a pin 32 and a slot 33. The control column 29 is slidably installed in the middle of the sliding column 22, the threaded seat 30 is rotatably installed in the telescopic sleeve 16, and the sliding column 22 is threadedly inserted in the middle of the threaded seat 30. At the same time, the threaded connection between the sliding column 22 and the threaded seat 30 is not self-locking. The connecting ring 31 is fixedly installed on the surface of the control column 29, the pin 32 is fixedly installed on the lower surface of the connecting ring 31, the slot 33 is opened on the upper surface of the threaded seat 30, and the pin 32 can be inserted into the slot 33. A limiting sleeve 34 is fixedly installed in the middle of the telescopic sleeve 16, and the control column 29 is slidably inserted in the limiting sleeve 34.

[0042] In this way, during the sliding of the slide post 22, the threaded seat 30 will be driven to rotate synchronously. At the same time, when the slide post 22 moves downward, under the action of gravity, the control post 29 will also move downward synchronously, thereby driving the connecting ring 31 and the pin 32 to move downward synchronously. In this way, after the first connecting rod 23 is unfolded, the pin 32 will continue to align with the slot 33 on the threaded seat 30 until it is inserted, thereby limiting the rotation of the threaded seat 30, and then achieving the limitation of the slide post 22. In this way, the first connecting rod 23 and the second connecting rod 24 can be prevented from rotating under the action of gravity of the film roll, thereby further improving stability.

[0043] When the film roll needs to be removed, the lifting seat 13 only needs to be moved downward to drive the control column 29 to contact the ground and push the control column 29 to slide upward. At this time, the control column 29 will drive the latch 32 to separate from the slot 33 through the connecting ring 31 to release the limit on the threaded seat 30. After that, the telescopic sleeve 16 is controlled by the first motor 5 to rotate in the opposite direction and retract into the shaft body 301. During this process, the first connecting rod 23 will rotate under pressure, thereby driving the sliding column 22 to move upward and achieve reset. Then the screw rod 6 is controlled to reverse and the support column 7 is moved upward to release the limit on the expansion block 302 and attract the expansion block 302 to retract. In this way, the film roll can be removed.

[0044] Therefore, the complete usage process is, first, push the trolley 1 to move the tensioning shaft 3 to the top of the film roll to be transported, and then start the second motor 15, the second motor 15 will drive the lifting screw 11 to rotate, and then drive the lifting seat 13 to move up and down, the movement of the lifting seat 13 will drive the tensioning shaft 3 to move synchronously through the frame plate 4 until the tensioning shaft 3 is inserted into the middle of the film roll, at this time, start the first motor 5, and drive the adjusting cylinder 20 to drive the first gear 8 and the second gear 9 to engage through the connecting plate 21, so that the first motor 5 will drive the screw rod 6 to rotate through the first gear 8 and the second gear 9, the rotation of the screw rod 6 will drive the support column 7 to slide, the sliding of the support column 7 will push the tensioning block 302 to slide out from the middle of the shaft body 301, thereby pressing the inner wall of the central axis of the film roll, and then let the lifting seat 13 move up to drive the film roll to move up, and finally push the trolley 1 to move to achieve transportation.

[0045] During transportation, the user can drive the first gear 8 to slide by adjusting the cylinder 20 to make the first gear 8 mesh with the third gear 18. At this time, starting the first motor 5 will drive the transmission shaft 17 to rotate, and the transmission shaft 17 will drive the telescopic sleeve 16 to rotate to make the telescopic sleeve 16 extend from the bottom end of the shaft body 301 until the bottom end of the telescopic sleeve 16 extends out of the bottom end of the film roll. At this time, under the action of the compression spring 28, the slip ring 25 will drive the slide column 22 to slide down, and the slide column 22 will drive the first connecting rod 23 to rotate through the second connecting rod 24, so that it will unfold below the bottom end of the film roll, and then limit the bottom end of the film roll to prevent the film roll from detaching from the tensioning shaft 3.

[0046] Among them, during the sliding of the slide post 22, the threaded seat 30 will be driven to rotate synchronously. At the same time, when the slide post 22 moves downward, under the action of gravity, the control post 29 will also move downward synchronously, thereby driving the connecting ring 31 and the pin 32 to move downward synchronously. In this way, after the first connecting rod 23 is unfolded, the pin 32 will continue to align with the slot 33 on the threaded seat 30 until it is inserted, thereby limiting the rotation of the threaded seat 30, and then realizing the limitation of the slide post 22. In this way, the first connecting rod 23 and the second connecting rod 24 can be prevented from rotating under the action of gravity of the film roll, thereby further improving stability.

[0047] When the film roll needs to be removed, the lifting seat 13 only needs to be moved downward to drive the control column 29 to contact the ground and push the control column 29 to slide upward. At this time, the control column 29 will drive the latch 32 to separate from the slot 33 through the connecting ring 31 to release the limit on the threaded seat 30. After that, the telescopic sleeve 16 is controlled by the first motor 5 to rotate in the opposite direction and retract into the shaft body 301. During this process, the first connecting rod 23 will rotate under pressure, thereby driving the sliding column 22 to move upward and achieve reset. Then the screw rod 6 is controlled to reverse and the support column 7 is moved upward to release the limit on the expansion block 302 and attract the expansion block 302 to retract. In this way, the film roll can be removed.

[0048] Furthermore, the screw rod 6 can be controlled to rotate to release the fixing of the film roll by the expansion block 302. At this time, the film roll will automatically move down, and then the film roll can be slowly moved down due to the blocking of the first connecting rod 23 and the buffering of the compression spring 28, thereby protecting the film roll.

[0049] In summary, during the entire use process, the entire device can automatically support the bottom end of the film roll through the lifting assembly, thereby preventing the film roll from detaching and effectively ensuring transportation safety. In addition, there is no need to place the tensioning shaft 3 horizontally, thereby reducing the occupied space and facilitating transportation.

[0050] At the same time, during use, the user can control the extension length of the telescopic sleeve 16 to meet the transportation requirements of film rolls of various lengths, which will effectively increase the application range of the entire device.

[0051] In addition, during use, after the pin 32 in the lifting assembly is disengaged from the slot 33, the compression spring 28 can slowly cause the film roll to disengage from the middle of the tensioning shaft 3 until it contacts the ground. This can avoid impact when the film roll is unloaded, further ensuring safety.

[0052] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A transport device for synchronous film roll collection, characterized in that: include: A cart (1), wherein a handle (2) is mounted on the upper surface of the cart (1); An expansion shaft (3), the expansion shaft (3) comprising a shaft body (301) and an expansion block (302), the expansion block (302) being slidably arranged on the surface of the shaft body (301); A driving assembly, the driving assembly being connected to the expansion shaft (3) and driving the expansion block (302) to slide through the driving assembly; A lifting component, the lifting component is connected between the expansion shaft (3) and the trolley (1), and the lifting and lowering of the expansion shaft (3) is controlled by the lifting component; The lifting assembly comprises a telescopic part and a lifting part, the telescopic part is connected to the tensioning shaft (3) and can extend from the bottom end of the tensioning shaft (3), the lifting part is installed at the end of the telescopic part away from the tensioning shaft (3), and the lifting part can automatically lift the bottom end of the film roll when the end of the telescopic part extends out of the bottom end of the film roll.

2. A transport device for synchronous film roll collection according to claim 1, characterized in that: The driving assembly comprises a frame plate (4), a first motor (5), a screw rod (6) and a support column (7); the frame plate (4) is fixedly connected to the movable end of the lifting assembly; the shaft body (301) is fixedly mounted on the lower surface of the frame plate (4); the first motor (5) is fixedly mounted on the frame plate (4); the screw rod (6) is rotatably mounted below the frame plate (4); and the end of the screw rod (6) extends into the middle of the shaft body (301); a transmission assembly is connected between the first motor (5) and the screw rod (6); and the first motor (5) can drive the screw rod (6) to rotate through the transmission assembly; the support column (7) is slidably mounted inside the shaft body (301); and the support column (7) is threadedly connected to the surface of the screw rod (6); and at the same time, the surface of the support column (7) close to the expansion block (302) and the surface of the expansion block (302) close to the support column (7) are both wedge-shaped surfaces.

3. A transport device for synchronous film roll collection according to claim 2, characterized in that: The support column (7) and the screw rod (6) are both made of magnetic materials, and the support column (7) and the screw rod (6) can attract the expansion block (302). The transmission component comprises a first gear (8) and a second gear (9). The first gear (8) is connected to the output shaft of the first motor (5) and can rotate synchronously therewith. The second gear (9) is fixedly connected to the screw rod (6), and the first gear (8) can mesh with the second gear (9).

4. A transport device for synchronous film roll collection according to claim 3, characterized in that: The lifting assembly comprises a frame (10), a lifting screw (11), a guide rod (12), a lifting seat (13), a counterweight (14) and a second motor (15). The frame (10) is fixedly mounted on the surface of the cart (1), the lifting screw (11) is rotatably mounted in the middle of the frame (10), the guide rod (12) is fixedly mounted in the middle of the frame (10), the lifting seat (13) is threadedly mounted on the surface of the lifting screw (11), and the lifting seat (13) is slidably sleeved on the surface of the guide rod (12), the lifting seat (13) is fixedly connected to the frame plate (4), the counterweight (14) is fixedly mounted on the surface of the cart (1), and the second motor (15) is fixedly mounted on the frame (10), and the second motor (15) is coaxially connected to the lifting screw (11) and can drive the lifting screw (11) to rotate synchronously.

5. A transport device for synchronous film roll collection according to claim 3 or 4, characterized in that: The telescopic part comprises a telescopic sleeve (16) and a transmission shaft (17); the telescopic sleeve (16) is threadedly mounted inside the shaft body (301); the transmission shaft (17) is rotatably inserted in the middle of the screw rod (6); and the telescopic sleeve (16) is slidably sleeved on the surface of the transmission shaft (17) and can rotate synchronously with the transmission shaft (17).

6. A transport device for synchronous film roll collection according to claim 5, characterized in that: The lifting assembly also includes a power assembly, which includes a third gear (18), a guide column (19), an adjusting cylinder (20) and a connecting plate (21). The third gear (18) is fixedly mounted on the surface of the transmission shaft (17), and the third gear (18) can mesh with the first gear (8). The guide column (19) is rotatably mounted on the frame plate (4) and is coaxially connected to the output shaft of the first motor (5). The rotating shaft of the first gear (8) is slidably sleeved on the guide column (19) and can rotate synchronously with the guide column (19). The adjusting cylinder (20) is fixedly mounted on the frame plate (4). One end of the connecting plate (21) is fixedly connected to the movable end of the adjusting cylinder (20), and the other end is rotatably sleeved on the rotating shaft of the first gear (8) and can drive the first gear (8) to rise and fall synchronously.

7. A transport device for synchronous film roll collection according to claim 6, characterized in that: The lifting part comprises a sliding column (22), a first connecting rod (23), a second connecting rod (24), a slip ring (25), a first retaining ring (26), a second retaining ring (27) and a compression spring (28); the sliding column (22) is slidably mounted on the end of the telescopic sleeve (16) away from the shaft body (301); the end of the first connecting rod (23) rotates with the end of the telescopic sleeve (16); one end of the second connecting rod (24) is rotationally connected to the surface of the sliding column (22), and the other end is rotationally connected to the middle of the first connecting rod (23); the slip ring (25) is fixedly mounted on the surface of the sliding column (22) and slidably mounted in the middle of the telescopic sleeve (16); the first retaining ring (26) and the second retaining ring (27) are both fixedly mounted inside the telescopic sleeve (16) and are respectively connected to the upper and lower ends of the slip ring (25); and the compression spring (28) is mounted between the first retaining ring (26) and the slip ring (25).

8. A transport device for synchronous film roll collection according to claim 7, characterized in that: The lifting part also includes a control column (29), a threaded seat (30), a connecting ring (31), a bayonet (32) and a slot (33). The control column (29) is slidably mounted in the middle of the sliding column (22). The threaded seat (30) is rotatably mounted in the telescopic sleeve (16). The sliding column (22) is threadedly inserted in the middle of the threaded seat (30). At the same time, the threaded connection between the sliding column (22) and the threaded seat (30) does not have self-locking properties. The connecting ring (31) is fixedly mounted on the surface of the control column (29). The bayonet (32) is fixedly mounted on the lower surface of the connecting ring (31). The slot (33) is provided on the upper surface of the threaded seat (30), and the bayonet (32) can be inserted into the slot (33). A limiting sleeve (34) is fixedly mounted in the middle of the telescopic sleeve (16). The control column (29) is slidably inserted in the limiting sleeve (34).

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