Paper roller shaft pulling sleeve device

Abstract

The utility model belongs to the technical field of paper roller shaft replacement, and particularly relates to a paper roller shaft pulling sleeve device which comprises a base and a first sliding groove, the first sliding groove is formed in the base, a first sliding block is connected in the first sliding groove in a sliding mode, a second sliding groove communicated with the outside is formed in the first sliding block, and two clamping blocks are connected in the second sliding groove in a sliding mode. A baffle is fixedly connected to the base. The driving assembly is located in the first sliding block and used for driving the two clamping blocks to move; the first placement groove is formed in the top surface of the base, a paper roller is placed in the first placement groove, one end of a shaft core in the paper roller is located between the two clamping blocks, and one side of the paper roller is attached to the baffle; according to the paper roller shaft pulling sleeve device, the problem that when the paper roller shaft pulling sleeve device is used, due to the fact that the diameter of a paper roller shaft core is the same as or very close to the diameter of the sleeve, replacement fails possibly is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of paper roll shaft replacement, and particularly relates to a paper roll shaft pulling sleeve device. Background Art

[0002] A paper roll shaft pulling sleeve device is a device specifically used in the process of paper roll processing. Its main function is to quickly and effectively sleeve a new sleeve after pulling out the shaft of the paper roll (that is, removing the shaft in the center of the paper roll). The design of this device aims to improve the efficiency and quality of paper roll processing and reduce the complexity and labor intensity of manual operations.

[0003] For example, a Chinese patent with the publication number CN212798889U discloses a paper roll shaft pulling sleeve device, which includes a flatbed truck device, a sleeve device, and a motor device. The flatbed truck device, the sleeve device, and the motor device are arranged in sequence. The flatbed truck device includes two guide rails, and a flatbed truck is slidably connected to the guide rails. The sleeve device includes a bracket. A baffle is fixedly connected to the frame body at one end of the bracket close to the guide rail. A window is opened on the baffle. A base is fixed to the frame body at the other end of the bracket. A top plate is pivotally connected to the top of the base. Semi-circular openings are respectively opened on the top surface of the base and the bottom surface of the top plate. A hole is formed between the two semi-circular openings. A number of supports are arranged between the baffle and the base. The motor device includes a motor. The motor is detachably connected to a fixed frame. A winch is sleeved on the main shaft of the motor. A rope is wound around the winch. The utility model directly sleeves a new sleeve after core pulling, greatly improving the working efficiency.

[0004] The above patent has the following problems:

[0005] This patent has some disadvantages in use. For example, in order to ensure that the replaced sleeve can be tightly inserted into the paper roll, most users will choose a sleeve with the same or very close diameter to the shaft core for replacement. However, when the above paper roll shaft pulling sleeve device is used, the replacement may fail due to the same or very close diameters of the paper roll shaft core and the sleeve. In view of this, we propose a paper roll shaft pulling sleeve device. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a paper roll shaft pulling sleeve device to solve the problems raised in the above background art.

[0007] In view of this, the utility model provides a paper roll shaft pulling sleeve device, including:

[0008] A base and a first chute. The first chute is opened on the base. A first slider is slidably connected in the first chute. A second chute communicating with the outside is opened in the first slider. Two clamping blocks are slidably connected in the second chute. A baffle is fixedly connected to the base;

[0009] The driving component is located inside the first slider and is used to drive the two clamping blocks to move;

[0010] The first placement groove is opened on the top surface of the base. A paper roll is placed in the first placement groove. One end of the shaft core inside the paper roll is located between the two clamping blocks, and one side of the paper roll is in contact with the baffle;

[0011] The second placement groove is opened on the base. A sleeve is placed in the second placement groove. A push plate is slidably connected in the second placement groove, and one side of the push plate is in contact with the sleeve;

[0012] The power component is located inside the base and is used to drive the first slider and the push plate to move.

[0013] Based on the above structure, through the first chute and the first slider provided, it is ensured that the first slider can slide in the first chute. Through the second chute and the clamping blocks provided, it is ensured that the two clamping blocks can slide in the second chute. Through the first placement groove and the paper roll provided, it is ensured that the paper roll can be placed in the first placement groove. Through the driving component provided, it is ensured that the user can drive the two clamping blocks to approach each other through the driving component and clamp the shaft core on the paper roll. Through the second placement groove and the sleeve provided, it is ensured that the sleeve can be placed in the second placement groove. Through the push plate provided, it is ensured that the push plate can slide in the second placement groove. Through the power component provided, it is ensured that the user can drive the first slider and the push plate to move respectively through the power component, so that the first slider extracts the shaft core of the paper roll through the two first sliders, and the push plate pushes the sleeve into the paper roll. Through the baffle provided, it is ensured that when the shaft core of the paper roll is extracted, it can be blocked by the baffle.

[0014] In the above technical solution, further, the driving component includes:

[0015] The bidirectional threaded rod is rotatably connected in the second chute and is threadedly connected to the two clamping blocks. One end of the bidirectional threaded rod is fixedly connected to a rotating rod, and one end of the rotating rod penetrates through the inner wall of the second chute and extends to the outside and is rotatably connected to the first slider.

[0016] In this technical solution, it is ensured that the two clamping blocks can clamp the shaft core of the paper roll.

[0017] In the above technical solution, further, the two threads on the bidirectional threaded rod have opposite helix directions.

[0018] In this technical solution, it is ensured that when the bidirectional threaded rod rotates, the two clamping blocks approach or move away from each other under the action of the two threads of the bidirectional threaded rod.

[0019] In the above technical solution, further, the power component includes:

[0020] The first one-way threaded rod is rotatably connected in the first chute and threadedly connected to the first slider;

[0021] The second one-way threaded rod is rotatably connected in the second placement groove and threadedly connected to the push plate;

[0022] The first movable groove is opened in the base and communicated with the first chute. A first sprocket and a second sprocket are rotatably connected in the first movable groove. One end of the first sprocket extends into the first chute and is fixed to one end of the first one-way threaded rod. A first chain is meshed between the first sprocket and the second sprocket;

[0023] The second movable groove is opened in the base and communicated with the second placement groove. A third sprocket and a fourth sprocket are rotatably connected in the second movable groove. One end of the third sprocket extends into the second placement groove and is fixed to one end of the second one-way threaded rod. A second chain is meshed between the third sprocket and the fourth sprocket;

[0024] The through groove is opened in the base and communicated with the first movable groove and the second movable groove. A connecting rod is rotatably connected in the through groove. Two ends of the connecting rod respectively extend into the first movable groove and the second movable groove and are respectively fixed to the second sprocket and the fourth sprocket;

[0025] The motor is fixedly connected to one side of the base, and an output shaft of the motor penetrates through one side of the base and extends into the first movable groove to be fixed to the second sprocket.

[0026] In this technical solution, it is ensured that the user can replace the shaft core in the paper roll.

[0027] In the above technical solution, further, the first one-way threaded rod and the second one-way threaded rod have the same size.

[0028] In this technical solution, it is ensured that when the first one-way threaded rod and the second one-way threaded rod rotate, the first slider and the push plate can move the same distance.

[0029] In the above technical solution, further, one end of the first sprocket is rotatably connected to the first chute, and one end of the third sprocket is rotatably connected to the second placement groove.

[0030] In this technical solution, it is ensured that one end of the first sprocket can rotate normally in the first chute, and it is ensured that one end of the third sprocket can rotate normally in the second placement groove.

[0031] In the above technical solution, further, two ends of the connecting rod are respectively rotatably connected to the first movable groove and the second movable groove.

[0032] In this technical solution, it is ensured that both ends of the connecting rod can rotate normally within the first movable groove and the second movable groove respectively.

[0033] The beneficial effects of the present utility model are as follows:

[0034] For this paper roll shaft extraction and sleeve device, through the provided first sliding groove and first slider, it is ensured that the first slider can slide within the first sliding groove; through the provided second sliding groove and clamping blocks, it is ensured that the two clamping blocks can slide within the second sliding groove; through the provided first placement groove and paper roll, it is ensured that the paper roll can be placed within the first placement groove; through the provided driving assembly, it is ensured that the user can drive the two clamping blocks to approach each other through the driving assembly and clamp the shaft core on the paper roll; through the provided second placement groove and sleeve, it is ensured that the sleeve can be placed within the second placement groove; through the provided push plate, it is ensured that the push plate can slide within the second placement groove; through the provided power assembly, it is ensured that the user can drive the first slider and the push plate to move respectively through the power assembly, enabling the first slider to extract the shaft core of the paper roll through the two first sliders, and enabling the push plate to push the sleeve into the paper roll; through the provided baffle, it is ensured that when the shaft core of the paper roll is extracted, it can be blocked by the baffle, solving the problem that the paper roll shaft extraction and sleeve device may fail to replace due to the same or very close diameters of the shaft core of the paper roll and the sleeve during use. Description of the Drawings

[0035] Figure 1 is the overall structural schematic diagram of the present utility model;

[0036] Figure 2 is the exploded structural schematic diagram of a part of the present utility model;

[0037] Figure 3 is the internal structural schematic diagram of the first slider of the present utility model;

[0038] Figure 4 is one of the internal structural schematic diagrams of the base of the present utility model;

[0039] Figure 5 is the other internal structural schematic diagram of the base of the present utility model.

[0040] The markings in the figure are indicated as:

[0041] 1. Base; 2. First chute; 3. First slider; 4. Second chute; 5. Clamping block; 6. First placement groove; 7. Paper roll; 8. Second placement groove; 9. Sleeve; 10. Pusher plate; 11. Bidirectional threaded rod; 12. Rotating rod; 13. First unidirectional threaded rod; 14. First movable groove; 15. First sprocket; 16. Second sprocket; 17. First chain; 18. Second movable groove; 19. Third sprocket; 20. Fourth sprocket; 21. Second chain; 22. Through groove; 23. Connecting rod; 24. Motor; 25. Second unidirectional threaded rod; 26. Baffle plate. Detailed implementation manner

[0042] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0043] In the description of the present application, it should be noted that the terms used here are only for describing specific implementation manners, and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the dimensions of each part shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0044] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. generally belong to the same category, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0045] It should be noted that in the description of the present application, the orientation or positional relationships indicated by the orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary explanations, these orientation terms do not indicate and imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present application; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0046] It should be noted that in the present application, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the presence of additional identical elements in the process, method, article or device comprising such element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0047] Embodiment 1:

[0048] Please refer to Figure 1 - Figure 5 As shown, this embodiment provides a paper roll shaft-pulling sleeve device, including:

[0049] A base 1 and a first chute 2. The first chute 2 is opened on the base 1. A first slider 3 is slidably connected in the first chute 2. A second chute 4 communicating with the outside is opened in the first slider 3. Two clamping blocks 5 are slidably connected in the second chute 4. A baffle 26 is fixedly connected to the base 1;

[0050] A driving assembly, which is located in the first slider 3 and is used to drive the two clamping blocks 5 to move;

[0051] A first placement groove 6 is opened on the top surface of the base 1. A paper roll 7 is placed in the first placement groove 6. One end of the shaft core in the paper roll 7 is located between the two clamping blocks 5, and one side of the paper roll 7 is in contact with the baffle 26;

[0052] The second placement groove 8 is opened on the base 1. A sleeve 9 is placed in the second placement groove 8. A push plate 10 is slidably connected in the second placement groove 8, and one side of the push plate 10 is in contact with the sleeve 9.

[0053] The power assembly is located inside the base 1 and is used to drive the first slider 3 and the push plate 10 to move.

[0054] Embodiment 2:

[0055] This embodiment provides a paper roll shaft-pulling sleeve device. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The driving assembly includes:

[0056] A bidirectional threaded rod 11 is rotatably connected in the second chute 4 and is threadedly connected to the two clamping blocks 5. One end of the bidirectional threaded rod 11 is fixedly connected to a rotating rod 12, and one end of the rotating rod 12 penetrates through the inner wall of the second chute 4 and extends to the outside to be rotatably connected to the first slider 3.

[0057] Among them, during use, the user rotates the rotating rod 12 by hand to drive the bidirectional threaded rod 11 to rotate in the second chute 4, so that the two clamping blocks 5 approach each other under the action of the threads of the two bidirectional threaded rods 11. When the two clamping blocks 5 move to a position where they cannot move, it is ensured that the two clamping blocks 5 can clamp the shaft core of the paper roll 7.

[0058] Embodiment 3:

[0059] This embodiment provides a paper roll shaft-pulling sleeve device. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The two sections of threads on the bidirectional threaded rod 11 have opposite helix directions.

[0060] Among them, it is ensured that when the bidirectional threaded rod 11 rotates, the two clamping blocks 5 approach each other or move away from each other under the action of the threads of the two bidirectional threaded rods 11.

[0061] Embodiment 4:

[0062] This embodiment provides a paper roll shaft-pulling sleeve device. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The power assembly includes:

[0063] A first one-way threaded rod 13 is rotatably connected in the first chute 2 and is threadedly connected to the first slider 3;

[0064] A second one-way threaded rod 25 is rotatably connected in the second placement groove 8 and is threadedly connected to the push plate 10;

[0065] The first movable slot 14 is opened in the base 1 and is communicated with the first sliding slot 2. A first sprocket 15 and a second sprocket 16 are rotatably connected in the first movable slot 14. One end of the first sprocket 15 extends into the first sliding slot 2 and is fixed to one end of the first one-way threaded rod 13. A first chain 17 is engaged between the first sprocket 15 and the second sprocket 16;

[0066] The second movable slot 18 is opened in the base 1 and is communicated with the second placement slot 8. A third sprocket 19 and a fourth sprocket 20 are rotatably connected in the second movable slot 18. One end of the third sprocket 19 extends into the second placement slot 8 and is fixed to one end of the second one-way threaded rod 25. A second chain 21 is engaged between the third sprocket 19 and the fourth sprocket 20;

[0067] The through slot 22 is opened in the base 1 and is communicated with the first movable slot 14 and the second movable slot 18. A connecting rod 23 is rotatably connected in the through slot 22. Two ends of the connecting rod 23 respectively extend into the first movable slot 14 and the second movable slot 18 and are fixed to the second sprocket 16 and the fourth sprocket 20 respectively;

[0068] The motor 24 is fixedly connected to one side of the base 1. The output shaft of the motor 24 penetrates through one side of the base 1 and extends into the first movable slot 14 and is fixed to the second sprocket 16.

[0069] Among them, when the user starts the motor 24, the output shaft of the motor 24 drives the second sprocket 16 to rotate in the first movable slot 14, so that the second sprocket 16 drives the fourth sprocket 20 to rotate in the second movable slot 18 through the connecting rod 23. When the second sprocket 16 and the fourth sprocket 20 rotate, the second sprocket 16 and the fourth sprocket 20 respectively drive the first sprocket 15 and the third sprocket 19 to rotate in the first movable slot 14 and the second movable slot 18 through the first chain 17 and the second chain 21. When the first sprocket 15 and the third sprocket 19 rotate, the first sprocket 15 and the third sprocket 19 respectively drive the first one-way threaded rod 13 and the second one-way threaded rod 25 to rotate in the first sliding slot 2 and the second placement slot 8. When the first one-way threaded rod 13 rotates, the first slider 3 moves along the first sliding slot 2 under the action of the thread of the first one-way threaded rod 13, so that the first slider 3 pulls out the shaft core of the paper roll 7 through the two clamping blocks 5. At the same time, when the second one-way threaded rod 25 rotates, the push plate 10 moves along the second placement slot 8 under the action of the thread of the second one-way threaded rod 25 to push the sleeve 9 to move, so that the sleeve 9 is inserted into the paper roll 7 to replace the shaft core in the paper roll 7 with the sleeve 9, ensuring that the user can replace the shaft core in the paper roll 7.

[0070] Embodiment 5:

[0071] This embodiment provides a paper roll shaft-pulling sleeve device. In addition to including the technical solutions of the above embodiment, it also has the following technical features: the first one-way threaded rod 13 and the second one-way threaded rod 25 have the same dimensions.

[0072] Among them, it is ensured that when the first one-way threaded rod 13 and the second one-way threaded rod 25 rotate, the first slider 3 and the push plate 10 can move the same distance.

[0073] Embodiment 6:

[0074] This embodiment provides a paper roll shaft-pulling sleeve device. In addition to including the technical solutions of the above embodiment, it also has the following technical features: one end of the first sprocket 15 is rotatably connected to the first chute 2, and one end of the third sprocket 19 is rotatably connected to the second placement groove 8.

[0075] Among them, it is ensured that one end of the first sprocket 15 can rotate normally in the first chute 2, and it is ensured that one end of the third sprocket 19 can rotate normally in the second placement groove 8.

[0076] Embodiment 7:

[0077] This embodiment provides a paper roll shaft-pulling sleeve device. In addition to including the technical solutions of the above embodiment, it also has the following technical features: both ends of the connecting rod 23 are respectively rotatably connected to the first movable groove 14 and the second movable groove 18.

[0078] Among them, it is ensured that both ends of the connecting rod 23 can rotate normally in the first movable groove 14 and the second movable groove 18 respectively.

[0079] In use, the user places the paper roller 7 in the first placement groove 6 and positions one end of the axis of the paper roller 7 between the two clamping blocks 5. Subsequently, the user places the sleeve 9 in the second placement groove 8. Then, the user rotates the rotating rod 12 by hand, causing the rotating rod 12 to drive the bidirectional threaded rod 11 to rotate in the second sliding groove 4, so that the two clamping blocks 5 approach each other under the action of the threads of the two bidirectional threaded rods 11. When the two clamping blocks 5 move to a position where they can no longer move, at this time, the two clamping blocks 5 will clamp the axis of the paper roller 7. Subsequently, the user starts the motor 24, causing the output shaft of the motor 24 to drive the second sprocket 16 to rotate in the first movable groove 14, so that the second sprocket 16 drives the fourth sprocket 20 to rotate in the second movable groove 18 through the connecting rod 23. When the second sprocket 16 and the fourth sprocket 20 rotate, the second sprocket 16 and the fourth sprocket 20 will respectively drive the first sprocket 15 and the third sprocket 19 to rotate in the first movable groove 14 and the second movable groove 18 through the first chain 17 and the second chain 21. When the first sprocket 15 and the third sprocket 19 rotate, the first sprocket 15 and the third sprocket 19 will respectively drive the first one-way threaded rod 13 and the second one-way threaded rod 25 to rotate in the first sliding groove 2 and the second placement groove 8. When the first one-way threaded rod 13 rotates, the first slider 3 will move along the first sliding groove 2 under the action of the threads of the first one-way threaded rod 13, causing the first slider 3 to pull out the axis of the paper roller 7 through the two clamping blocks 5. At the same time, when the second one-way threaded rod 25 rotates, the push plate 10 will move the sleeve 9 along the second placement groove 8 under the action of the threads of the second one-way threaded rod 25, causing the sleeve 9 to be inserted into the paper roller 7 and replacing the axis in the paper roller 7 with the sleeve 9, ensuring that the user can replace the axis in the paper roller 7.

[0080] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A paper roller shaft pulling sleeve device, characterized in that: include: A base (1) and a first slide groove (2), wherein the first slide groove (2) is provided on the base (1), a first slider (3) is slidably connected in the first slide groove (2), a second slide groove (4) connected to the outside is provided in the first slider (3), two clamping blocks (5) are slidably connected in the second slide groove (4), and a baffle (26) is fixedly connected to the base (1); A driving assembly, the driving assembly being located in the first sliding block (3) and being used for driving the two clamping blocks (5) to move; A first placement groove (6), the first placement groove (6) being arranged on the top surface of the base (1), a paper roller (7) being placed in the first placement groove (6), one end of the shaft core in the paper roller (7) being located between the two clamping blocks (5), and one side of the paper roller (7) being in contact with the baffle (26); A second placement groove (8), the second placement groove (8) is provided on the base (1), a sleeve (9) is placed in the second placement groove (8), a push plate (10) is slidably connected in the second placement groove (8), and one side of the push plate (10) is in contact with the sleeve (9); A power assembly is located in the base (1) and is used to drive the first sliding block (3) and the push plate (10) to move.

2. A paper roll shaft pulling sleeve device according to claim 1, characterized in that: The drive assembly comprises: A bidirectional threaded rod (11), the bidirectional threaded rod (11) is rotatably connected in the second slide groove (4) and is threadably connected to the two clamping blocks (5), one end of the bidirectional threaded rod (11) is fixedly connected to a rotating rod (12), and one end of the rotating rod (12) passes through the inner wall of the second slide groove (4) and extends to the outside to be rotatably connected to the first sliding block (3).

3. A paper roll shaft pulling sleeve device according to claim 2, characterized in that: The two sections of threads on the bidirectional threaded rod (11) have opposite rotation directions.

4. A paper roll shaft pulling sleeve device according to claim 1, characterized in that: The power assembly comprises: A first one-way threaded rod (13), the first one-way threaded rod (13) is rotatably connected in the first slide groove (2) and is threadably connected to the first sliding block (3); A second one-way threaded rod (25), the second one-way threaded rod (25) is rotatably connected in the second placement groove (8) and is threadedly connected to the push plate (10); a first movable groove (14), the first movable groove (14) being arranged in the base (1) and being connected to the first slide groove (2), a first sprocket (15) and a second sprocket (16) being rotatably connected in the first movable groove (14), one end of the first sprocket (15) extending into the first slide groove (2) and being fixed to one end of the first one-way threaded rod (13), a first chain (17) being meshed between the first sprocket (15) and the second sprocket (16); a second movable groove (18), the second movable groove (18) being arranged in the base (1) and being connected to the second placement groove (8), a third sprocket (19) and a fourth sprocket (20) being rotatably connected in the second movable groove (18), one end of the third sprocket (19) extending into the second placement groove (8) and being fixed to one end of the second one-way threaded rod (25), a second chain (21) being meshed between the third sprocket (19) and the fourth sprocket (20); A through groove (22), the through groove (22) being provided in the base (1) and communicating with the first movable groove (14) and the second movable groove (18), a connecting rod (23) being rotatably connected in the through groove (22), and two ends of the connecting rod (23) respectively extending into the first movable groove (14) and the second movable groove (18), and respectively fixed to the second sprocket (16) and the fourth sprocket (20); A motor (24) is fixedly connected to one side of the base (1), and an output shaft of the motor (24) passes through one side of the base (1) and extends into the first movable groove (14) to be fixed to the second sprocket (16).

5. A paper roll shaft pulling sleeve device according to claim 4, characterized in that: The first one-way threaded rod (13) and the second one-way threaded rod (25) have the same size.

6. A paper roll shaft pulling sleeve device according to claim 4, characterized in that: One end of the first sprocket (15) is rotatably connected to the first slide groove (2), and one end of the third sprocket (19) is rotatably connected to the second placement groove (8).

7. A paper roll shaft pulling and sleeve device according to claim 4, characterized in that: Both ends of the connecting rod (23) are rotatably connected to the first movable groove (14) and the second movable groove (18) respectively.

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