A rewinder cutting device and a rewinder

Abstract

The present invention discloses a rewinder cutting device and a rewinder, relating to the technical field of rewinder. The rewinder cutting device includes two parallel feed guides, a driving mechanism, a transverse connecting plate, a plurality of tool holders and blades mounted on the tool holders. The driving mechanism drives the transverse connecting plate to move on the feed guides. The tool holders are movably mounted on the transverse connecting plate, and a locking device is further provided between the tool holders and the transverse connecting plate. In the present invention, the tool holders are movably mounted on the transverse connecting plate. When it is necessary to adjust the cutting size, it can be achieved by moving the tool holders. A position locking device is mounted on the tool holders to prevent the tool holders from shifting during the process of cutting workpieces, improving the stability of cutting and ensuring the cutting quality.

Description

Technical Field

[0001] The present invention relates to the technical field of rewinding machines, and mainly relates to a cutting device for a rewinding machine and a rewinding machine. Background Art

[0002] A rewinding machine cuts processed paper products, films, cloth rolls, etc. into different specifications or sizes according to different customer requirements. Chinese Utility Model Patent CN201520955132X discloses "a slitting rewinding machine". The cutting device of this slitting rewinding machine includes a cutting knife and a cutting knife holder. The cutting knife holder is parallel to the clamped paper tube. The cutting knives are distributed axially along the cutting knife holder. The number of cutting knives is multiple. The cutting knife feeding mechanism includes a pair of feeding cylinders. The push rod of each feeding cylinder is fixed to one end of the cutting knife holder. When the coiled material needs to be cut, the feeding cylinder pushes the cutting knife holder to make the cutting knife contact the coiled material to cut the coiled material. After cutting is completed, the cutting knife holder retracts.

[0003] Generally, the cutting knives are fixed on the cutting knife holder. If the number of segments to be cut needs to be adjusted, the unnecessary cutting knives must be disassembled or the number of cutting knives increased, and the positions of the cutting knives need to be rearranged. Summary of the Invention

[0004] The object of the present invention is to overcome the problem of inconvenient adjustment of the cutting knife position in the prior art, and provide a cutting device for a rewinding machine and a rewinding machine that can arbitrarily adjust the position of the cutting knife.

[0005] The cutting device for the rewinding machine includes two parallel feed rails, a driving mechanism, a transverse connecting plate, a plurality of tool holders, and blades installed on the tool holders. The driving mechanism drives the transverse connecting plate to move on the feed rails. The tool holders are movably installed on the transverse connecting plate. A locking device is further provided between the tool holders and the transverse connecting plate. The locking device includes a rack and a locking block engaged with the rack. The rack is arranged on the transverse connecting plate. The locking block is rotatably installed on the tool holder. An elastic member for urging the locking block to engage with the rack is provided between the locking block and the tool holder. The elastic member can not only tightly lock the tool holder during operation, but also overcome the acting force of the elastic member when the position of the cutting knife needs to be adjusted, so that the locking between the tool holder and the transverse connecting plate is released, and the position of the tool holder can be conveniently moved. After the tool holder moves in place, under the action of the elastic member, the locking block automatically resets and engages with the rack again.

[0006] Further, the middle of the locking block is installed on the tool holder through a rotating shaft. The elastic member is a torsion spring. The torsion spring is sleeved on the rotating shaft. One end of the torsion spring abuts against the tool holder, and the other end abuts against the upper end of the locking block. The lower end of the locking block is provided with sawteeth matching the rack. The torsion spring is small, durable, and convenient to install. It is suitable for being sleeved on the rotating shaft, making the connection between the locking block and the tool holder compact and reasonable.

[0007] Further, two opposite bushings are provided at both ends of the rotating shaft. The rotating shaft hole of the locking block matches the outer diameter of the bushing, and the retaining rings of the bushing are arranged on both sides of the locking block. The bushing can prevent the locking block from shifting left and right, thereby improving the positioning accuracy of the tool holder. The bushing is in a T shape.

[0008] Further, the rewinder cutting device further includes a tool moving cylinder, a pushing block, a guide rail, and a transverse moving seat movably installed on the guide rail. A tool moving groove is provided on the tool holder. The tool moving cylinder is installed on the transverse moving seat. The pushing block is connected to the piston rod of the tool moving cylinder. The pushing block can be pushed by the tool moving cylinder to be inserted into the tool moving groove, and push the locking block to separate from the rack against the action of the elastic member. By the telescopic movement of the tool moving cylinder, the pushing block is engaged or separated from the tool moving groove on the tool holder. When engaged, the transverse moving seat is moved to drive the tool holder to move on the transverse connecting plate at the same time, realizing tool movement. The structure is simple and highly reliable. The transverse moving seat is driven by a servo motor through a synchronous belt. The servo motor can accurately position the moving position of the tool holder through an encoder, and the tool holder can be moved to a set position.

[0009] Further, an unlocking roller is provided on the upper side surface of the locking block. When the pushing block is pushed by the tool moving cylinder to be inserted into the tool moving groove, the unlocking roller is pushed, so that the locking block separates from the rack against the action of the elastic member.

[0010] Further, the rewinder cutting device further includes an identification mechanism. The identification mechanism includes an induction sheet installed on the tool holder and a sensor installed on the transverse moving seat. The identification mechanism can identify the number of the tool holder, so as to accurately shift the specified tool holder.

[0011] Further, a transverse guide rail is provided on the transverse connecting plate, and a tool holder slider is provided at the bottom of the tool holder. The tool holder is movably installed on the transverse guide rail through the tool holder slider.

[0012] Further, a base is further included. The feed guide rail is arranged on the base. Feed sliders matching the feed guide rail are provided at both ends of the transverse connecting plate. The drive shaft of the drive mechanism is connected to the feed sliders

[0013] The present invention also provides a rewinder, and the rewinder is equipped with the above-mentioned rewinder cutting device.

[0014] Compared with the prior art, in the present invention, the tool holder is movably mounted on the transverse guide rail horizontally. When it is necessary to adjust the cutting size, it can be achieved by moving the tool holder, and the specified tool holder can be accurately displaced through the recognition mechanism. A position locking device is installed on the tool holder to prevent the tool holder from shifting during the process of cutting workpieces, improving the cutting stability and ensuring the cutting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a schematic structural diagram of the rewinder cutting device according to Embodiment 1;

[0016] Figure 2 is Figure 1 the right view of;

[0017] Figure 3 FIG. is a schematic structural diagram of the tool holder according to Embodiment 1 Figure 1 ;

[0018] Figure 4 is Figure 3 the exploded view of;

[0019] Figure 5 FIG. is a schematic structural diagram of the tool holder according to Embodiment 1 Figure 2 ;

[0020] Figure 6 is Figure 5 the exploded view of;

[0021] Figure 7 FIG. is the tool retraction state of the tool holder according to Embodiment 1 Figure 1 ;

[0022] Figure 8 FIG. is the tool retraction state of the tool holder according to Embodiment 1 Figure 2 ;

[0023] Figure 9 FIG. is a schematic structural diagram of the tool holder and the transverse moving seat according to Embodiment 1 Figure 1 ;

[0024] Figure 10 FIG. is a schematic structural diagram of the tool holder and the transverse moving seat according to Embodiment 1 Figure 2 ;

[0025] Figure 11 FIG. is a schematic diagram of the tool retraction action according to Embodiment 1 Figure 1 ;

[0026] Figure 12 FIG. is a schematic diagram of the tool retraction action according to Embodiment 1 Figure 2 ;

[0027] Figure 13 FIG. is a schematic diagram of the tool extending action according to Embodiment 1 Figure 1 ;

[0028] Figure 14 Schematic diagram of the knife extending action in the first embodiment Figure 2 ;

[0029] Figure 15 Structural control system diagram of the slitting device of the rewinder in the first embodiment;

[0030] Figure 16 Structural schematic diagram of the slitting device of the rewinder in the second embodiment;

[0031] Figure 17 Structural schematic diagram of the tool holder in the second embodiment;

[0032] Figure 18 Exploded view of the tool holder in the second embodiment;

[0033] Figure 19 Structural schematic diagram of the lateral moving seat and the tool holder in the second embodiment Figure 1 ;

[0034] Figure 20 Structural schematic diagram of the lateral moving seat and the tool holder in the second embodiment Figure 2 ;

[0035] Figure 21 Structural control system diagram of the slitting device of the rewinder in the second embodiment.

[0036] Reference numerals: 1. Base, 2. Feed guide rail, 3. Lateral connecting plate, 4. Feed slider, 5. Connecting plate driving mechanism, 6. Lateral guide rail, 7. Tool holder, 7.1. Knife moving groove, 8. Blade, 9. Tool holder slider, 10. Column, 10.1. Limit convex block, 11. Knife disc rotating shaft, 12. Knife disc, 12.1. Engaging part, 13. Torsion spring, 14. Limit block, 15. Swing rod, 16. Clamping post, 17. Spring, 18. Guide rail, 19. Lateral moving seat, 20. Servo motor, 21. Knife retracting cylinder, 22. Knife retracting roller, 23. Knife extending cylinder, 24. Second push block, 25. Knife extending roller, 26. Inductive sheet, 27. Sensor, 28. First push block, 28.1. Lower inclined surface, 28.2. Knife moving clamping part, 29. Rack, 30. Locking block, 31. Elastic member, 32. Unlocking roller, 33. Rotating shaft, 34. T-shaped bushing. Detailed implementation manners

[0037] The present invention will be further described below in conjunction with the embodiments and the accompanying drawings of the specification.

[0038] Embodiment 1:

[0039] In Figure 1 and Figure 2In the first embodiment shown, the rewinder cutting device of the present invention includes a base 1 and a transverse connecting plate 3. Two parallel feed guides 2 are installed on the base 1. The transverse connecting plate 3 is perpendicular to the feed guides 2. Feed sliders 4 are installed at both ends of the transverse connecting plate 3. The feed sliders 4 match the feed guides 2, so that the transverse connecting plate 3 can move on the feed guides 2 along the feed guides 2. In this embodiment, the number of feed guides 2 is two. If the length of the transverse connecting plate 3 increases, more feed guides 2 can also be provided; there are 2 feed guides 2 in this embodiment, and 2 bases are correspondingly provided. In other embodiments of the present invention, the feed sliders 4 and the feed guides 2 can be replaced by a guide shaft and a sliding shaft sleeve, and their function is to guide the transverse connecting plate 3 to move on the feed guides 2, and the specific structural form is diverse. Two connecting plate driving mechanisms 5 are also respectively installed on the base 1. The driving shaft of the connecting plate driving mechanism 5 is connected to the feed slider 4, and the connecting plate driving mechanism 5 drives the transverse connecting plate 3 to move along the feed guides 2. The connecting plate driving mechanism 5 in this embodiment is a cylinder, and the piston rod of the cylinder is connected to the feed slider 4. A transverse guide 6 is installed on the transverse connecting plate 3, and a plurality of tool holders 7 that can move along the transverse guide 6 are installed on the transverse guide 6. A blade 8 is installed on the tool holder 7. Specifically, a tool holder slider 9 is installed below the tool holder 7, and the tool holder 7 is movably installed on the transverse guide 6 through the tool holder slider 9. When the cutting size changes, the distance between the blades can be adjusted by moving the tool holder 7, so as to meet the requirements of different cutting sizes. In other embodiments of the present invention, the sliding connection between the tool holder 7 and the transverse connecting plate 3 can be realized by rollers and chutes or other structural forms.

[0040] The blade 8 is rotatably installed on the tool holder 7. Specifically, as Figure 3 、 4, as shown in Figures 5, 6, 7, and 8, a column 10 is provided on the tool holder 7. A tool disc 12 is rotatably installed on the column 10 through a tool disc rotating shaft 11, and a blade 8 is installed on the tool disc 12. A torsion spring 13 is sleeved on the tool disc rotating shaft 11. One end of the torsion spring 13 is connected to the column 10, and the other end is connected to a limit block 14 fixed on the tool disc 12. The torsion spring 13 urges the tool disc 12 to drive the blade 8 to rotate towards the retracted tool position until the limit block 14 abuts against the top end of the column 10. In this embodiment, the function of the torsion spring 13 is to quickly reset the blade 8 to the retracted tool position. Other reset devices can also be used instead of the torsion spring. In other embodiments of the present invention, the blade 8 can also rotate to the retracted tool position under the action of gravity. A swing rod 15 is rotatably installed on the column 10. A clamping post 16 is provided on the swing rod 15. A spring 17 is installed between the swing rod 15 and the tool holder 7. The spring 17 urges the swing rod 15 to rotate upward until the upper surface of the swing rod 15 abuts against the limit projection 10.1 on the column 10. A clamping portion 12.1 is provided on the tool disc 12. Overcoming the acting force of the torsion spring 13, the tool disc 12 is rotated in the reverse direction so that its clamping portion 12.1 is engaged with the clamping post 16, thereby keeping the tool disc 12 in the extended tool position, Figure 3 The engagement shown in the figure is achieved by the end of the clamping portion 12.1 abutting against the clamping post 16. When an external force presses the swing rod 15 downward, when the clamping post 16 is separated from the clamping portion 12.1, the tool disc 12 rotates to the retracted tool position by the elastic force of the torsion spring 13. When the pressure on the swing rod 15 is removed, the swing rod 15 resets by the elastic force of the spring 17. Therefore, when it is necessary to adjust the number of cutting segments of the coiled material, only the unnecessary blade 8 needs to be rotated to the retracted tool position, or the blade 8 for increasing the number of segments needs to be rotated to the extended tool position. The blade can be extended or retracted according to the actual required number of cutting segments, and the tool holder 7 can be moved through the transverse guide rail 6 to adjust the cutting size (i.e., the distance between two blades), which can meet the different needs of customers and is convenient to operate.

[0041] In this embodiment, the rewinder cutting device further includes a retracted tool mechanism, as Figure 1 shown, this retracted tool mechanism includes a guide rail 18 arranged parallel to the transverse guide rail 6. A transverse moving seat 19 that can move back and forth along the guide rail 18 is provided on the guide rail 18. The transverse moving seat 19 is driven by a servo motor 20 through a synchronous belt, and the start and stop of the servo motor 20 are controlled by a controller. As Figure 9 and Figure 10 shown, a retracted tool cylinder 21 is installed on the transverse moving seat 19. A first push block 28 is installed on the piston rod of the retracted tool cylinder 21. The expansion and contraction of the retracted tool cylinder 21 are controlled by a controller. A lower inclined surface 28.1 is provided at the end of the first push block 28. A retracted tool roller 22 is installed on the swing rod 15. As Figure 11 、 12As shown in the figure, when the cutter head 12 is in the extended cutter position, the retracting cutter cylinder 21 extends, and the lower inclined surface 28.1 of the first push block 28 abuts against the retracting cutter roller 22. Since the first push block 28 has a lower inclined surface, the horizontal thrust of the retracting cutter cylinder 21 can be converted into a downward pressure. The first push block 28 presses down the swing rod 15, causing the clamping post 16 to separate from the engaging portion 12.1 of the cutter head 12. The cutter head 12 rotates to the retracting cutter position under the action of the torsion spring 13. The retracting cutter cylinder 21 retracts, and the swing rod 15 resets under the action of the spring 17. In other embodiments of the present invention, the retracting cutter cylinder 21 can also extend vertically downward to push the first push block 28 to press down the swing rod 15. Compared with the structure using the first push block with a lower inclined surface, the overall setting is more complex.

[0042] As Figure 9 、 11 shown, the retracting cutter cylinder 21 is also a cutter moving cylinder at the same time. There is a cutter moving groove 7.1 on the tool holder 7, and a cutter moving clamping portion 28.2 is provided on the first push block 28. When the retracting cutter cylinder 21 extends, the cutter moving clamping portion 28.2 of the first push block 28 is clamped into the cutter moving groove 7.1 of the tool holder 7. When the servo motor 20 drives the transverse moving seat 19 to move, the tool holder 7 can be driven to move. The servo motor 20 can accurately position the moving position of the tool holder 7 through the encoder, and the tool holder 7 can be moved to a position manually set by the touch screen or a certain position obtained through calculation. The controller stores the position of each tool holder 7 in the memory.

[0043] In this embodiment, the rewinder cutting device further includes an extended cutter mechanism, as Figure 9 and Figure 10 shown, including an extended cutter cylinder 23 installed on the transverse moving seat 19. The extension and retraction of the extended cutter cylinder 23 are controlled by the controller. A second push block 24 is installed on the piston rod of the extended cutter cylinder 23. There is an extended cutter roller 25 on the cutter head 12, and the extended cutter roller 25 is located below the cutter head rotating shaft 11. As Figure 13 、 14 shown, when the cutter head 12 is in the retracting cutter position, the extended cutter cylinder 23 pushes out, and the end of the second push block 24 abuts against the extended cutter roller 25, pushing the cutter head 12 to rotate against the action of the torsion spring until the engaging portion 12.1 of the cutter head 12 is engaged with the clamping post 16 on the swing rod 15, so that the cutting blade on the cutter head 12 remains in the extended state.

[0044] In this embodiment, the rewinder cutting device further includes an identification mechanism, as Figure 9 and Figure 10As shown in the figure, it includes an induction piece 26 installed on the tool holder 7 and a sensor 27 installed on the transverse moving seat 19. The sensor 27 is connected to the controller. When the transverse moving seat 19 is moved and the sensor 27 senses the induction piece 26, it will upload a trigger signal to the controller, and the controller controls the counter to increment or decrement by one, so as to identify the number of the tool holder 7. Generally, one of the tool holders at both ends is set as the No. 1 tool holder.

[0045] As Figure 15 shown, the control system of this embodiment includes a connecting plate driving mechanism 5, a knife-extending cylinder 23, a knife-retracting cylinder 21, a servo motor 20, a sensor 27, a counter, a memory, a touch screen, and a controller. The working principle of the control system is as follows:

[0046] 1. During operation, input the width of the coiled material to be cut into segments as required in the touch screen. The controller calculates the actual number of blades required and the positions of all tool holders.

[0047] 2. The controller sends a start signal, and the servo motor 20 drives the transverse moving seat 19 and the sensor 27 to move along the guide rail 18. The sensor 27 transmits the identification signal of the induction piece 26 it senses to the controller, and the controller controls the counter to identify the number of each tool holder. The controller saves the position data of the tool holder and the expansion and contraction state of the blade to the memory.

[0048] 3. According to the position of each tool holder and the expansion and contraction state of the blade, the controller controls the servo motor 20, the knife-retracting cylinder 21, and the knife-extending cylinder 23 to displace each tool holder and place the blade in the extended position or the retracted position.

[0049] 4. The controller controls the connecting plate driving mechanism 5 to push the entire row of tool holders on the transverse connecting plate 3 to cut the coiled material along the feed guide rail 2.

[0050] 5. The controller controls the connecting plate driving mechanism 5 to push the tool holder to reset.

[0051] Embodiment 2:

[0052] In this embodiment, the rewinder cutting device further includes a tool holder locking device, which is installed on each tool holder 7 and includes a rack 29 arranged parallel to the transverse guide rail 6 as Figure 16 shown, and a lock block 30 meshing with the rack 29 as Figure 17 shown. As Figures 17 - 20 shown, the lock block 30 is rotatably installed on the tool holder 7, and an elastic member 31 is installed between the tool holder 7 and the lock block 30. The elastic member 31 urges the lower end of the lock block 30 to mesh with the rack 29. An unlocking roller 32 is provided at the upper end of the lock block 30, and the unlocking roller 32 is located above the tool moving groove 7.1.

[0053] When it is necessary to move the tool holder 7, the tool holder 7 needs to be unlocked first. While the retracting tool cylinder 21 drives the first push block 28 to snap into the tool moving groove 7.1 of the tool holder 7, the tool moving clamping portion 28.2 of the first push block 28 pushes the unlocking roller 32, so that the locking block 30 overcomes the elastic force of the elastic member 31, and the lower end of the locking block 30 is separated from the rack 29. Then, the movement of the transverse moving seat 19 drives the tool holder 7 to move to the specified position. When the retracting tool cylinder 21 contracts, the first push block 28 is separated from the unlocking roller 32 and moves out of the tool moving groove 7.1. The locking block 30 relies on the action of the elastic member 31 to re-engage with the rack 29, so that the tool holder 7 is locked in the specified position and will not shift left and right, improving stability. In other embodiments of the present invention, the locking device can also be set in the form of a lock or a bolt, etc. Specifically, a bolt rod can be provided on the tool holder 7, and a matching bolt hole can be provided on the transverse connecting plate 3. The bolt rod can be inserted into the bolt hole under the action of gravity or a spring to lock the tool holder. When tool movement is required, the push block can be driven by the tool moving cylinder to lift the bolt rod to unlock the tool holder.

[0054] As Figure 17 and Figure 18 shown, the middle part of the locking block 30 is installed on the tool holder 7 through a rotating shaft 33. An elastic member 31 is sleeved on the rotating shaft 33. The elastic member 31 is a torsion spring. One end of the torsion spring abuts against the tool holder 7, and one end abuts against the upper end of the locking block 30, so as to promote the lower end of the locking block 30 to engage with the rack 29. The lower end of the locking block 30 is provided with sawteeth matching the rack 29. In other embodiments of the present invention, the elastic member 31 can be a tension spring or a compression spring. The specific structures of the tool holder 7 and the locking block 30 are also different for facilitating the installation of the elastic member 31, and their functions are all to promote the engagement of the locking block 30 with the rack 29. Two oppositely arranged T-shaped bushings 34 are also sleeved on the rotating shaft 33. The rotating shaft hole of the locking block 30 matches the outer diameter of the T-shaped bushing 34. The retaining rings of the two T-shaped bushings 34 are arranged on both sides of the locking block 30 to prevent the locking block 30 from shifting left and right and improve the positioning accuracy. Except for the above structure, the other structures of the rewinding machine cutting device in this embodiment are the same as those in Embodiment 1.

[0055] As Figure 21 shown, the control system of this embodiment includes a connecting plate driving mechanism 5, a tool moving cylinder 21 (i.e., a retracting tool cylinder), a servo motor 20, a sensor 27, a counter, a memory, a touch screen, and a controller. The working principle of the control system is as follows:

[0056] 1. When starting to work, parameters can be entered in the touch screen, which can be the accurate position of the tool holder or the required cutting size and then calculate the position of the tool holder;

[0057] 2. The controller sends out a start signal, and the servo motor 20 drives the transverse moving seat 19 and the sensor 27 to move along the guide rail 18. The sensor 27 transmits the identification signal of the sensed sensing piece 26 to the controller, and the controller controls the counter to increment or decrement by one, so as to identify the number of the tool holder. Generally, one of the tool holders at both ends is set as the No. 1 tool holder, and the controller saves the position data of each tool holder to the memory;

[0058] 3. According to the positions of each tool holder and the input parameters, the controller controls the servo motor 20 and the tool shifting cylinder 21 to unlock and shift the tool holder;

[0059] 4. The controller sends a cutting signal to the connecting plate driving mechanism 5, and the connecting plate driving mechanism 5 pushes the whole row of tool holders on the transverse connecting plate 3 to cut the coil material along the feed guide rail 2;

[0060] 5. After the cutting is completed, the controller sends a reset signal to the connecting plate driving mechanism 5, and the connecting plate driving mechanism 5 pushes the tool holder to reset.

Claims

1. A rewinder cutting device, comprising two parallel feed guides, a driving mechanism, a transverse connecting plate, a plurality of tool holders and blades mounted on the tool holders, wherein the driving mechanism drives the transverse connecting plate to move on the feed guides, and is characterized in that, The tool holder is movably mounted on the transverse connecting plate, and a locking device is further provided between the tool holder and the transverse connecting plate. The locking device includes a rack and a locking block engaged with the rack. The rack is arranged on the transverse connecting plate, the locking block is rotatably mounted on the tool holder, and an elastic member for urging the locking block to engage with the rack is arranged between the locking block and the tool holder; It further includes a tool moving cylinder, a push block, a guide rail, and a transverse moving seat movably mounted on the guide rail. A tool moving groove is arranged on the tool holder. The tool moving cylinder is mounted on the transverse moving seat, the push block is connected to the piston rod of the tool moving cylinder, and the push block can be inserted into the tool moving groove under the push of the tool moving cylinder and push the locking block to separate from the rack against the action of the elastic member.

2. The rewinder cutting device according to claim 1, characterized in that, The middle part of the locking block is mounted on the tool holder through a rotating shaft. The elastic member is a torsion spring, and the torsion spring is sleeved on the rotating shaft; One end of the torsion spring abuts against the tool holder, and the other end abuts against the upper end of the locking block. The lower end of the locking block is provided with saw teeth matching the rack.

3. The rewinder cutting device according to claim 2, characterized in that, Two opposite shaft sleeves are arranged at both ends of the rotating shaft. The rotating shaft hole of the locking block matches the outer diameter of the shaft sleeve, and retaining rings of the shaft sleeve are arranged on both sides of the locking block.

4. The rewinder cutting device according to claim 3, characterized in that: The shaft sleeve is in a T shape.

5. The rewinder cutting device according to claim 1, characterized in that, An unlocking roller is arranged on the side of the upper end of the locking block. When the push block is inserted into the tool moving groove under the push of the tool moving cylinder, the unlocking roller is pushed, so that the locking block separates from the rack against the action of the elastic member.

6. The rewinder cutting device according to claim 1, characterized in that, It further includes an identification mechanism, and the identification mechanism includes an induction sheet mounted on the tool holder and a sensor mounted on the transverse moving seat.

7. The rewinder cutting device according to any one of claims 1-6, characterized in that, A transverse guide rail is arranged on the transverse connecting plate, and a tool holder slider is arranged at the bottom of the tool holder. The tool holder is movably mounted on the transverse guide rail through the tool holder slider.

8. The rewinder cutting device according to any one of claims 1-6, characterized in that, It further includes a base. The feed guide rail is arranged on the base. Feed sliders matching the feed guide rail are arranged at both ends of the transverse connecting plate, and the drive shaft of the drive mechanism is connected to the feed sliders.

9. A rewinder, characterized in that, The rewinder has the rewinder cutting device according to any one of claims 1-8.

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