Clamping jaw for fixing paper tube, pushing mechanism of clamping jaw, precision cutting machine and using method of clamping jaw

Abstract

The invention relates to the technical field of pipe conveying equipment, and particularly discloses a clamping jaw for fixing a paper pipe, a pushing mechanism of the clamping jaw, a precision cutting machine and a clamping jaw using method. The clamping jaw comprises a clamping jaw block, and a clamping part on the clamping jaw block is used for being embedded into the paper tube to fix the paper tube; a clamping jaw block is mounted in a passing opening in the clamping jaw shell in a sliding manner; the driving module is arranged in the clamping jaw shell, and a pushing wedge block is arranged at one end of the driving module. A containing cavity is formed in the clamping jaw block and can be used for being embedded with the pushing wedge block, so that the driving module pushes the clamping jaw block to move in the radial direction when moving in the axial direction, and the clamping jaw block stretches out of the clamping jaw shell relatively. When the clamping jaw is used for fixing a paper tube, although part of the paper tube is damaged, the fixing firmness degree is greatly improved, the paper tube can quickly respond to move along with the clamping jaw, accurate control over the movement amount of the paper tube in the machining process is facilitated, the overall machining qualification rate of the paper tube is increased, and the machining efficiency is improved. And the total amount of discarded paper tubes due to disqualification is reduced, so that the overall utilization rate of the paper tubes is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of tube conveying equipment, and in particular to a clamping claw for fixing a paper tube and a material pushing mechanism thereof, a precision cutting machine and a method for using the clamping claw. Background Art

[0002] Paper tube is a lightweight, low-cost, easy-to-process and environmentally friendly material, which is widely used in packaging, transportation, construction, industrial production and other fields. However, the original processed paper tube is usually longer, so when facing different usage requirements, the original processed paper tube needs to be cut to the corresponding required length.

[0003] Usually, a pushing device is provided at one end of the paper tube cutting device, and a cutting device is provided at the other end. During the paper tube cutting process, one end of the paper tube is first fixed relatively to the pushing device, and then the paper tube is pushed to move to the location of the cutting device. When the paper tube moves a certain distance from the cutting device, the pushing is stopped and the paper tube is cut. Therefore, the control of the pushing distance of the paper tube by the pushing device will directly affect the size of the cut paper tube. That is, if a paper tube with precise size needs to be processed, the pushing distance control of the paper tube pushing device also needs to be relatively precise. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a claw for fixing a paper tube, which can be installed on a pushing device to ensure that the paper tube and the pushing device are firmly fixed, and ensure that when the pushing device moves and stops, the paper tube fixed thereon will be synchronously driven to move and stop, and will not slide relative to the pushing device due to the inertia of the paper tube itself, thereby causing a large error in the control of the pushing distance of the paper tube by the pushing device.

[0005] The present invention is achieved through the following technical solutions: A clamping claw for fixing a paper tube comprises: a clamping claw block, on which a clamping portion is provided, and the clamping portion is used to be embedded in a paper tube to fix the paper tube; a clamping claw shell, on which at least three through holes are provided, and the clamping claw block is slidably installed in each through hole; a driving module, which is arranged in the clamping claw shell, and a plurality of pushing wedge blocks are arranged on one end of the driving module close to the clamping claw; wherein an accommodating cavity is provided in the clamping claw block, and the pushing wedge block can be embedded in the accommodating cavity, wherein a first wedge surface in the accommodating cavity matches a second wedge surface on the pushing wedge block, so that when the driving module moves axially, the clamping claw block is pushed to move radially, so as to relatively protrude outside the clamping claw shell or be recessed in the clamping claw shell.

[0006] As a further improvement of the present invention, the engaging portion includes a plurality of engaging tooth groups arranged in parallel along the axial direction, and each engaging portion group includes a plurality of engaging teeth.

[0007] As a further improvement of the present invention, a push ring block is provided on the movable sleeve outside the outer shell of the clamping claw, and a material abutting surface which is connected with the end surface of the paper tube is provided on the push ring block.

[0008] In a second aspect, the present invention provides a paper tube pushing mechanism, comprising a pushing device, one end of which is equipped with a paper tube fixing claw as described in any one of the above items, and the pushing device can drive the paper tube fixing claw to move along the pushing direction.

[0009] As a further improvement of the present invention, one end of the pushing device is provided with a sleeve ring and a driving connecting rod, wherein the sleeve ring is movably sleeved on the outside of the claw housing, and the driving connecting rod is movably embedded in the installation cavity of the driving module, and bearing structures are provided between the inner cavity of the sleeve ring and the claw housing, and between the outer wall of the driving connecting rod and the inner wall of the installation cavity.

[0010] As a further improvement of the present invention, it also includes a horizontal displacement kit and a vertical displacement kit; the horizontal displacement kit is used to drive the pushing device to move along a first direction, and the first direction and the pushing direction are perpendicular to each other in the horizontal plane; the vertical displacement kit is used to drive the pushing device to move in the vertical direction.

[0011] As a further improvement of the present invention, it also includes an air drive device, which is connected to the push ring block and is used to control the push ring block to move axially relative to the jaw housing.

[0012] In a third aspect, the present invention provides a paper tube precision cutting machine, in which a paper tube pushing mechanism, a paper tube clamping device and a paper tube cutting device as described above are sequentially arranged along a paper tube pushing path.

[0013] As a further improvement of the present invention, the paper tube clamping device includes two groups of symmetrically arranged supporting wheels and a group of driving wheels, and the driving wheels are placed at the top of the gap between the two groups of supporting wheels for jointly clamping the paper tube, wherein the driving wheels can drive the paper tube to rotate axially.

[0014] In a fourth aspect, the present invention provides a method for using a paper tube fixing claw, which is used to operate the paper tube fixing claw described in any one of the above, and comprises the following steps: S1. Keep the claw block contracted in the claw housing, and sleeve the paper tube outside the claw housing; S2. Drive the driving module to move axially, drive the claw block to move axially, extend out of the claw housing, and make the clamping part embedded in the inner wall of the paper tube, the embedding depth is 20~25% of the thickness of the paper tube wall, and complete the relative fixation between the paper tube and the paper tube fixing claw.

[0015] The beneficial effects of the present invention include: (1) In the paper tube fixing claw provided by the present invention, the extension process of the claw block is radial movement. Therefore, in the whole process from the claw block extending the claw shell and the initial contact with the paper tube to the clamping part on the claw block being embedded in the inner wall of the paper tube, the claw block will not drive the paper tube to move in the axial direction, thereby ensuring that the paper tube will not deviate from the paper tube fixing claw or fall off directly during the paper tube fixing process; (2) In the present invention, the paper tube fixing claw is directly embedded in the inner wall of the paper tube when it is relatively fixed with the paper tube. Although one end of the paper tube is partially damaged, the relative fixation between the paper tube and the paper tube fixing claw is ensured to be relatively firm. At the same time, as described in the method of use, there is a limited relationship between the embedding depth of the clamping part and the thickness of the paper tube wall. If the embedding depth is too shallow, the degree of fixation is still low; if the embedding depth is too deep, the clamping part is also prone to cause the end of the paper tube to be too severely damaged and directly torn from the main body of the paper tube, which is not conducive to the processing of the paper tube; (3) After the paper tube pushing mechanism adopts the clamping claw, on the one hand, during the process of fixing the paper tube, the paper tube will not be axially offset relative to the pushing structure. Therefore, during multiple repeated operations, the pushing amount of the paper tube by the paper tube pushing mechanism is always consistent with the cutting amount of the paper tube, thereby improving the accuracy of repeated processing. At the same time, the structure ensures that the paper tube can be stably fixed on the pushing mechanism, so that the paper tube can follow the push mechanism to stop and start, further making the paper tube precision cutting machine more precise in controlling the cutting amount of the paper tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following drawings are provided for combining with the preferred implementation examples of the present invention to help understand the purpose and advantages of the present invention, wherein: Figure 1 This is a schematic diagram of the front view structure of the clamping claws for fixing the paper tube; Figure 2 It is the structural cross-section diagram at X-X' in the figure; Figure 3 It is a schematic diagram of the structure of the claw block; Figure 4 This is a schematic diagram of the paper tube pushing mechanism structure; Figure 5 This is a schematic diagram of the front view structure of the paper tube precision cutting machine.

[0017] Figure 4 In the figure, the horizontal displacement kit of the paper tube pushing structure shown includes a driving gear and a guide rack, and the guide rack is hidden in the figure to clearly show the rest of the structure of the paper tube pushing mechanism. The horizontal displacement kit shown here does not affect the protection scope of the claims of the present invention. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below based on the accompanying drawings and implementation examples.

[0019] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. The words "inside" and "outside" refer to the direction toward or away from the geometric center of a specific component, respectively. They are relative concepts, and therefore may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0020] Embodiment 1: like Figure 1~2 As shown, this embodiment provides a paper tube fixing claw, which mainly includes a claw block 1, a claw housing 2 and a driving module 3. Figure 2 As shown, a clamping portion 101 is provided on the claw block 1. In the present embodiment, the clamping portion 101 can be composed of a plurality of tooth blocks or strip-shaped protrusions and other arbitrary block structures with uneven surfaces. Such structures can be embedded in the inner wall of the paper tube, so as to achieve the effect of fixing the paper tube. The claw housing 2 is provided with three through openings, and a claw block 1 is slidably installed in each through opening. Under this structure, the claw block 1 can be movably extended out of the claw housing 2 to be embedded with the paper tube; if the current paper tube is no longer needed to be fixed, the claw block 1 can also be movably retracted into the claw housing 2, so that the paper tube can be radially moved relative to the claw, completing the initial socketing work or subsequent shedding work of the paper tube on the claw. Among them, the extension and retraction control of the claw block 1 is mainly realized by the driving module 3. As Figure 2 As shown, the driving module 3 is disposed in the claw housing 2, and a pushing wedge 4 is disposed at one end of the driving module 3 close to the claw. In this embodiment, a total of three pushing wedges 4 are disposed on the driving module 3, and each pushing wedge 4 can be embedded in the accommodating cavity 102 opened in the claw block 1 and move relative to the accommodating cavity 102.

[0021] In this embodiment, when the driving module 3 and the pushing wedge block 4 thereon slide axially, the first wedge surface 5 in the accommodating cavity 102 and the second wedge surface 6 on the pushing wedge block 4 can fit each other, so that the claw block 1 can move radially and extend out of the claw housing 2 or shrink in the claw housing 2. Figure 2Taking the angle shown in as an example, when the driving module 3 moves axially to the right, the second wedge surface 6 will push the first wedge surface 5 to drive the claw block 1 to move axially, and the claw block 1 will not deviate in the axial direction during the movement of the claw block 1, thereby ensuring that after the claw block 1 extends out of the claw housing 2, from the initial contact with the paper tube to the overall process of the engaging portion 101 on the claw block 1 being embedded in the inner wall of the paper tube, the paper tube will not be caused to deviate in the axial direction.

[0022] Preferably, in this embodiment, three groups of claw blocks 1 are evenly arranged along the circumference of the claw housing 2. If only two groups of claw blocks 1 are used, the inner cavity of the paper tube is easily expanded into an elliptical shape during the process of the claws and the paper tube being in conflict; if three groups of claw blocks 1 are used and unevenly arranged, it may also cause partial deformation of the inner cavity of the paper tube. For example, when two groups of claw blocks 1 are relatively close and the other group of claw blocks 1 is relatively far away, the cross section of the paper tube may be deformed more convexly at the position of a single group of claw blocks 1, and finally the processed paper tube shape does not meet the relevant requirements.

[0023] Preferably, if Figure 2~3 As shown, in this embodiment, the clamping part 101 includes three clamping teeth groups 101-1 arranged in parallel along the axial direction, and each clamping part 101 includes five clamping teeth. In this structure, when the clamping teeth are embedded in the inner wall of the paper tube, the tooth surface of the clamping teeth can prevent the paper tube from deviating in the axial direction relative to the clamping part 101, thereby ensuring the firm fixation of the paper tube and the claw.

[0024] Preferably, if Figure 1~2 As shown, the outer movable sleeve of the claw housing 2 is provided with a push ring block 7, and the push ring block 7 is provided with a material abutment surface 701 which is connected with the end surface of the paper tube. Figure 2 Taking the viewing angle shown in as an example, when the paper tube is fixed, the material resistance surface 701 will be placed on the left side of the through port so that the push ring block 7 will not block the extension of the claw block 1. At the same time, the end face of the paper tube under this structure conflicts with the material resistance surface 701, which proves that the paper tube is in place, and provides a reference for the fixed position of the paper tube during repeated paper tube fixing operations. When the current paper tube needs to be removed from the claw, the claw block 1 is first retracted into the claw housing 2, and then the push ring block 7 is driven to move to the right, and the paper tube is pushed axially by the material resistance surface 701 until the claw housing 2 is no longer placed in the inner cavity of the paper tube, and then the push ring block 7 is recovered, so that the paper tube can be quickly detached to facilitate the fixing of the next paper tube.

[0025] In this embodiment, a method for using the clamping claw for fixing the paper tube is also included, which mainly includes the following steps: S1. Sleeve the paper tube onto the outside of the claw housing 2. In this process, it is necessary to first keep the claw block 1 contained in the claw housing 2. In this embodiment, Figure 2As shown in the display angle in , it is necessary to push the driving module 3 to the left, and then drive the claw block 1 to move radially and shrink into the claw housing 2 by pushing the wedge block 4 and the accommodating cavity 102. Then the paper tube is moved from right to left and sleeved on the outside of the claw housing 2.

[0026] S2. Wait until the paper tube is in place, and then start fixing. Figure 2 As shown, when the paper tube is sleeved in place, its end face will conflict with the material-resisting surface 701 of the push ring block 7. Then the driving module 3 is pushed to the right, and then the wedge block 4 and the accommodating cavity 102 are pushed to cooperate, so that the claw block 1 moves radially and extends out of the claw housing 2. When the claw block 1 is extended, the engaging portion 101 thereon will first contact the inner wall of the paper tube, and then destroy the inner wall of the paper tube and finally embed into the tube wall of the paper tube. The embedding depth of the engaging portion 101 is 20% of the thickness of the tube wall of the paper tube. In this embodiment, the thickness of the tube wall is 10 mm, so the embedding depth is 2 mm.

[0027] The above has completed the relative fixation of the current paper tube on the claws.

[0028] If the embedded depth of the claws does not meet the requirements of the present invention, the claws will not fix the paper tube firmly enough, especially in the process of driving the claws and the paper tube on them to move axially, if an emergency stop occurs, the paper tube may slide off the claws due to its own inertia. If the embedded depth of the claws is too deep, it is easy to directly cause the paper tube to break at the embedded part during the process of the claws driving the paper tube to move, and the paper tube will still fall off the claws, and it is easy to cause damage to the rest of the paper tube.

[0029] Although the paper tube fixing method provided by the present invention causes damage to part of the paper tube at the end, making it difficult to reuse the part of the paper tube, the fixing firmness is greatly improved under this fixing method, so that the paper tube can quickly respond to the movement of the following claws, etc., which is conducive to the precise control of the movement of the paper tube. After the claws are used in the paper tube processing equipment, the processing accuracy of the paper tube can be improved, the overall qualified rate of the paper tube processing is increased, the total amount of paper tubes discarded due to unqualified is reduced, and the overall utilization rate of the paper tube is improved.

[0030] Embodiment 2: This embodiment provides a paper tube pushing mechanism, which is mainly used to push the paper tube into the processing point of the corresponding paper tube processing equipment. Figure 2 and Figure 4As shown, it mainly includes a pushing device A01, one end of which is equipped with the paper tube fixing claw described in Example 1, and the pushing device A01 can drive the paper tube fixed thereon to move along the pushing direction α. ​​In this embodiment, the pushing direction α is consistent with the axial direction. The pushing mechanism mainly fixes the paper tube relatively by the paper tube fixing claw described in Example 1, and then controls the precise movement of the paper tube, so that during the process of pushing the paper tube into the feed port of the corresponding paper tube processing equipment, the paper tube will not slide relative to the pushing mechanism, thereby ensuring that the pushing mechanism can accurately control the pushing amount of the paper tube. In this embodiment, the pushing device A01 of the pushing mechanism mainly pushes the paper tube to move along its axial direction.

[0031] Preferably, if Figure 2 As shown, one end of the pushing device A01 is provided with a sleeve ring A01-1 and a driving connecting rod A01-2. The sleeve ring A01-1 is movably sleeved on the outside of the claw housing 2, and the driving connecting rod A01-2 is arranged in the sleeve ring A01-1, and can be movably embedded in the installation cavity of the driving module 3. Among them, a bearing structure A01-3 is arranged between the inner cavity of the sleeve ring A01-1 and the claw housing 2, and between the outer wall of the driving connecting rod A01-2 and the inner wall of the installation cavity. Firstly, under this structure, the driving module 3 can be driven to move in the axial direction through the driving connecting rod A01-2, thereby controlling the extension amount of the claw block 1. Secondly, under this structure, the paper tube fixing claw described in Example 1 can rotate axially without driving the rotation of the other parts of the pushing mechanism.

[0032] At the processing point of the paper tube processing equipment, if there are cutting processes using circular cutting means, paper tube surface processing and other processing steps, the paper tube may be driven to rotate axially. Therefore, the pusher structure under this structure can assist in the axial rotation of the paper tube while ensuring the stability of the paper tube. At the same time, because the pusher mechanism is usually set at one end away from the processing point to fix the paper tube, it is ensured that when the paper tube is driven to rotate at the processing point, the other end of the paper tube will not swing, which will lead to a decrease in processing accuracy.

[0033] Preferably, if Figure 4As shown, the pushing mechanism also includes a horizontal displacement kit A02 and a vertical displacement kit A03. Among them, the horizontal displacement kit A02 is used to drive the pushing device A01 to move along the first direction β, and the first direction β and the pushing direction α are perpendicular to each other in the horizontal plane; the vertical displacement kit A03 is used to drive the pushing device A01 to move in the vertical direction. The above-mentioned kits are mainly used to adjust the relative position of the feeding device so that the feeding device can be adapted to the processing point of the corresponding paper tube processing equipment, so as to facilitate the precise pushing of the paper tube. In this embodiment, the horizontal displacement kit A02 and the vertical displacement kit A03 can adopt a combination kit consisting of a driving gear and a guide rack, or can adopt any device or kit that can drive the movement of components, such as a hydraulic rod, a cylinder, etc.

[0034] Preferably, the pushing mechanism also includes an air drive device A04, which is connected to the pushing ring block 7 and is used to control the axial movement of the pushing ring block 7 relative to the claw housing 2. When the paper tube is initially fixed, the air drive device A04 will drive the pushing ring block 7 to a specified position, so that the end face of the paper tube can fit with the abutment surface 701 when the paper tube is placed in place on the claw, thereby providing a positioning basis for the placement of the paper tube; when replacing the paper tube, the air drive device A04 pushes the pushing ring block 7 to move axially, thereby pushing the current paper tube to slide out of the claw. This structure is conducive to the rapid advancement of the overall process of paper tube processing and improves the efficiency of paper tube processing.

[0035] Embodiment 3: In this embodiment, a paper tube precision cutting machine is provided, in which the paper tube pushing mechanism, the paper tube clamping device B01 and the paper tube cutting device described in Example 2 are arranged in sequence along the paper tube pushing path. When a paper tube is placed in the paper tube precision cutting machine, the paper tube pushing mechanism can fix one end of the paper tube, and the other end of the paper tube is relatively fixed by the paper tube clamping device B01, and then the paper tube pushing machine will push the paper tube to move in the direction of the paper tube cutting machine. Since the paper tube is fixed firmly in the pushing mechanism used in this embodiment, when the pushing mechanism pushes the paper tube forward a distance and then stops rapidly, the paper tube will not slide relative to the pushing mechanism, so that the pushing amount of the paper tube by the pushing mechanism is the length of the paper tube obtained by cutting, so that the paper tube precision cutting machine can have precise control over the cutting amount of the paper tube, and at the same time, the movement of the paper tube in the process allows immediate start and stop, so that the overall speed of the cutting process is faster, and the efficiency of the paper tube cutting process is improved.

[0036] Preferably, if Figure 5As shown, the paper tube clamping device B01 includes two groups of symmetrically arranged supporting wheels B01-1 and a group of driving wheels B01-2, and the driving wheel B01-2 is placed at the top of the gap between the two groups of supporting wheels B01-1, so that the three groups of wheels together form a clamping effect on the paper tube, avoiding the paper tube from deviating during the pushing process and causing a decrease in cutting accuracy. At the same time, in this embodiment, the driving wheel B01-2 can drive the paper tube to rotate axially, so that the paper tube cutting device can perform ring cutting on the paper tube during the cutting process. On the one hand, the ring cutting will not damage the internal structure of the paper tube, and maintain the integrity and strength of each short tube segment. On the other hand, the deformation amount caused by the ring cutting process to the paper tube is small, which can try to ensure that the cross section of the cut paper tube remains circular without large deformation.

[0037] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned implementation cases, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned implementation cases, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation cases of the present invention.

Claims

1. A paper tube fixing claw, characterized in that: Contains: A claw block (1) having a clamping portion (101) disposed thereon, the clamping portion (101) being used to be embedded in a paper tube to fix the paper tube; A claw housing (2) having at least three through openings, each of which has the claw block (1) slidably mounted therein; A driving module (3) is arranged in the claw housing (2), and a plurality of pushing wedge blocks (4) are arranged on one end of the driving module (3) close to the claw; The claw block (1) is provided with a receiving cavity (102), and the pushing wedge block (4) can be embedded in the receiving cavity (102), wherein a first wedge surface (5) in the receiving cavity (102) matches with a second wedge surface (6) on the pushing wedge block (4), so that when the driving module (3) moves axially, the claw block (1) is pushed to move radially, so as to protrude relatively outside the claw housing (2) or be recessed inside the claw housing (2).

2. A paper tube fixing claw according to claim 1, characterized in that: The engaging portion (101) comprises a plurality of engaging tooth groups (101-1) arranged in parallel along the axial direction, and each group of the engaging portion (101) comprises a plurality of engaging teeth.

3. The paper tube fixing claw according to claim 1, characterized in that: A push ring block (7) is provided on the movable sleeve outside the claw housing (2), and a material abutting surface (701) which is connected to the end surface of the paper tube is provided on the push ring block (7).

4. A paper tube pushing mechanism, characterized in that: It comprises a pushing device (A01), one end of which is installed with a paper tube fixing claw as described in any one of claims 1 to 3, and the pushing device (A01) can drive the paper tube fixing claw to move along a pushing direction (α).

5. A paper tube pushing mechanism according to claim 4, characterized in that: One end of the pushing device (A01) is provided with a sleeve ring (A01-1) and a driving connecting rod (A01-2), wherein the sleeve ring (A01-1) is movably sleeved on the outside of the claw housing (2), and the driving connecting rod (A01-2) is movably engaged in the installation cavity of the driving module (3), and a bearing structure (A01-3) is provided between the inner cavity of the sleeve ring (A01-1) and the claw housing (2), and between the outer wall of the driving connecting rod (A01-2) and the inner wall of the installation cavity.

6. A paper tube pushing mechanism according to claim 4, characterized in that: It also comprises a horizontal displacement kit (A02) and a vertical displacement kit (A03); the horizontal displacement kit (A02) is used to drive the pushing device (A01) to move along a first direction (β), wherein the first direction (β) and the pushing direction (α) are perpendicular to each other on a horizontal plane; and the vertical displacement kit (A03) is used to drive the pushing device (A01) to move in a vertical direction.

7. A paper tube pushing mechanism according to claim 4, characterized in that: It also includes an air drive device (A04), which is connected to the push ring block (7) and is used to control the axial movement of the push ring block (7) relative to the claw housing (2).

8. A paper tube precision cutting machine, characterized in that: A paper tube pushing mechanism, a paper tube clamping device (B01) and a paper tube cutting device (B02) as described in any one of claims 4 to 7 are arranged in sequence along the paper tube pushing path.

9. A paper tube precision cutting machine according to claim 8, characterized in that: The paper tube clamping device (B01) comprises two groups of symmetrically arranged supporting wheels (B01-1) and a group of driving wheels (B01-2), wherein the driving wheel (B01-2) is placed at the top of the gap between the two groups of supporting wheels (B01-1) and is used to jointly clamp the paper tube, wherein the driving wheel (B01-2) can drive the paper tube to rotate axially.

10. A method for using a clamping claw for fixing a paper tube, characterized in that: The method for operating the paper tube fixing claw according to any one of claims 1 to 3 comprises the following steps: S1. Keep the claw block (1) retracted in the claw housing (2), and sleeve the paper tube outside the claw housing (2); S2. The driving module (3) is driven to move axially, thereby driving the claw block (1) to move axially, extending out of the claw housing (2), and allowing the engaging portion (101) to be embedded in the inner wall of the paper tube, with the embedding depth being 20 to 25% of the thickness of the paper tube wall, thereby completing the relative fixation between the paper tube and the paper tube fixing claw.

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