A slitting mechanism of a slitting machine facilitating tool replacement

Abstract

The application relates to a slitting mechanism convenient for knife replacement of a slitting machine, which comprises left and right wall plates, a round cutter shaft and a bottom cutter shaft arranged between the left and right wall plates, a plurality of bottom cutters arranged on the bottom cutter shaft, left and right round cutter shafts, a left clamping joint arranged on the left round cutter shaft, a right clamping joint arranged on the right round cutter shaft and used for clamping the left clamping joint, round cutters corresponding to the bottom cutters and arranged on the left and right round cutter shafts, round cutter seats movably arranged on the left and right wall plates, the left and right round cutter shafts rotatably connected to the round cutter seats of the left wall plate, the left and right round cutter shafts penetrating the round cutter seats at the ends far away from each other and rotatably sleeved with a cutter sleeve, the cutter sleeve movably sleeved with a rotating seat, support seats movably arranged on the left and right wall plates at the upper and lower ends of the rotating seat, the upper and lower ends of the rotating seat rotatably connected to the support seats, left and right driving mechanisms arranged on the rotating seat and used for driving the cutter sleeve to move leftward and rightward, and front and back driving mechanisms arranged on the left and right wall plates and used for driving the support seats to move forward and backward. The slitting mechanism can improve the convenience and efficiency of knife replacement.

Description

Technical Field

[0001] This invention relates to the field of slitting machine technology, and in particular to a slitting mechanism for easy blade replacement in a slitting machine. Background Technology

[0002] A slitting machine is a mechanical device that cuts wide sheets of paper, mica tape, or film into multiple narrow strips. It is commonly used in papermaking machinery, wire and cable mica tape production, and printing and packaging machinery. Slitting machines are primarily used for cutting mica tape, paper, insulating materials, and films, and are particularly suitable for cutting narrow strips (insulating materials, mica tape, films, etc.).

[0003] Currently, the slitting mechanism in slitting machines generally adopts a circular blade structure, which typically includes a bottom blade shaft and a circular blade shaft arranged in parallel. The bottom blade shaft has multiple bottom blades, while the circular blade shaft has corresponding multiple circular cutting blades. During slitting, the circular cutting blades adhere to the side of the bottom blades to slit the product. To facilitate slitting, the outer circumference of the circular cutting blades is generally relatively thin, making them prone to damage or dulling. This necessitates the frequent removal of individual damaged or dulled circular cutting blades from the circular blade shaft for replacement or grinding. However, in existing slitting mechanisms, removing the circular cutting blades from the circular blade shaft requires first removing the entire circular blade shaft, which is very inconvenient. To address this issue, a cutting device for a slitting machine, as described in patent application CN201720462688.4, allows one end of the blade shaft (corresponding to the circular blade shaft of this invention) to be rotated out, and then the cutting blades (corresponding to the circular cutting blades of this invention) can be removed from one end of the blade shaft. However, since there are usually many cutters on a single cutter shaft, and some cutter shafts may even have more than a dozen cutters, when the cutter at the end furthest from the cutter shaft is damaged, all the cutters on the cutter shaft need to be removed in order to replace the cutter at the furthest end. After replacement, each cutter needs to be installed and positioned individually, which is very troublesome. Therefore, this structure is still insufficient in terms of the convenience and efficiency of cutter replacement. Summary of the Invention

[0004] This invention proposes a slitting mechanism for a slitting machine that facilitates blade replacement. By dividing the circular blade shaft into a left circular blade shaft and a right circular blade shaft, both of which can be rotated out independently, the circular blade can be easily replaced, improving the convenience and efficiency of blade replacement and solving the aforementioned problems existing in the prior art.

[0005] The technical solution of this invention is implemented as follows: A slitting mechanism for easy blade changing in a slitting machine includes a left wall plate and a right wall plate. A circular blade shaft and a bottom blade shaft are arranged parallel to each other between the left and right wall plates. The bottom blade shaft is provided with a plurality of bottom blades. The circular blade shaft includes a left circular blade shaft and a right circular blade shaft arranged symmetrically. The left circular blade shaft is provided with a left retaining connector, and the right circular blade shaft is provided with a right retaining connector for engaging with the left retaining connector. Both the left and right circular blade shafts are provided with circular cutting blades corresponding to the bottom blades. Circular blade seats are movably arranged on both the left and right wall plates. The left circular blade shaft is oriented along its own axis. The left and right circular cutter shafts are rotatably connected to the circular cutter holder on the left wall panel. The left and right circular cutter shafts are rotatably connected to the circular cutter holder on the right wall panel along their own axis. The ends of the left and right circular cutter shafts that are far apart from each other both pass through the circular cutter holders and are rotatably fitted with a merging cutter sleeve. A rotating seat is movably fitted around the merging cutter sleeve. Support seats are slidably provided on the left and right wall panels at the upper and lower ends of the rotating seat. The upper and lower ends of the rotating seat are rotatably connected to the support seats. The rotating seat is provided with a left-right drive mechanism for driving the merging cutter sleeve to move left and right. The left and right wall panels are provided with a front-back drive mechanism for driving the support seats to move back and forth.

[0006] Preferably, the left snap-fit ​​connector has a plurality of left snap-fit ​​protrusions evenly arranged in a circle, and a left snap-fit ​​groove is provided between each left snap-fit ​​protrusion. The right snap-fit ​​connector has a right snap-fit ​​groove for the left snap-fit ​​protrusions to snap into and a right snap-fit ​​protrusion for snapping into the left snap-fit ​​groove.

[0007] Preferably, the circular cutter on the left circular cutter shaft is used to be combined with the left side of the bottom cutter on the left half of the bottom cutter shaft, and the circular cutter on the right circular cutter shaft is used to be combined with the right side of the bottom cutter on the right half of the bottom cutter shaft. A bottom cutter pushing mechanism is provided between the left wall plate and the right wall plate. The bottom cutter pushing mechanism is used to drive the bottom cutters on the left and right halves of the bottom cutter shaft to move axially in opposite directions on the bottom cutter shaft.

[0008] Preferably, the bottom knife pushing mechanism includes a motor, a lead screw, a guide shaft, and a knife adjusting seat. The lead screw and guide shaft are located between the left wall plate and the right wall plate. The motor is fixed on the right wall plate and connected to the lead screw. The knife adjusting seat is threaded onto the lead screw and slidably fitted onto the guide shaft. The position and number of the knife adjusting seats correspond to the bottom knife. The knife adjusting seat is provided with a bottom knife connecting mechanism for fixing the bottom knife. The lead screw includes a left threaded section and a right threaded section, and the threads of the left threaded section and the right threaded section have opposite directions.

[0009] Preferably, the bottom knife connecting mechanism includes a knife adjusting side plate, a knife adjusting arm, and a knife adjusting motor. The knife adjusting side plate is fixedly connected to the knife adjusting base, the knife adjusting arm is rotatably connected to the knife adjusting side plate, and the knife adjusting arm has a bottom knife slot for the rear side of the bottom knife to be inserted. The knife adjusting motor is fixed to the knife adjusting side plate and connected to the knife adjusting arm.

[0010] Preferably, the bottom blade connecting mechanism further includes a limiting block and a spring. The limiting block slides up and down on the blade adjusting side plate, and the spring abuts against the limiting block to push the limiting block downward. The blade adjusting arm is provided with a loosening plane and a fixing plane for cooperating with the limiting block.

[0011] Preferably, the bottom cutter shaft has a fixed inner cavity, and a bottom cutter fixing shaft is rotatably fitted within the fixed inner cavity. One end of the bottom cutter fixing shaft extends out of the bottom cutter shaft and is detachably connected to a rotating handle. A threaded seat is fixedly connected to the bottom cutter shaft within the fixed inner cavity. The end of the bottom cutter fixing shaft away from the rotating handle is threadedly connected to the threaded seat. The bottom cutter is sleeved on the bottom cutter shaft. The bottom cutter shaft has a sliding opening on its inner side that penetrates into the fixed inner cavity. An insertion post is slidably disposed within the sliding opening. An insertion port for inserting the insertion post is provided on the inner side of the bottom cutter. The bottom cutter shaft is provided with an insertion post spring for pushing the insertion post toward the bottom cutter fixing shaft. A tapered inclined block for pushing the insertion post into the insertion port is fixedly connected to the bottom cutter fixing shaft.

[0012] Preferably, the left wall plate is provided with a drive motor for driving the bottom cutter shaft to rotate, the bottom cutter shaft is keyed with a transmission gear, and the left circular cutter shaft is fixedly connected with a driven gear for meshing with the transmission gear.

[0013] Preferably, a mounting bracket is fixedly connected to the left wall panel, and an auxiliary support bracket is provided on the mounting bracket in an up-and-down sliding manner. The auxiliary support bracket is located directly below the left and right circular cutter shafts, and an auxiliary cylinder for controlling the up-and-down movement of the auxiliary support bracket is fixedly connected to the mounting bracket.

[0014] Preferably, both the left and right wall panels have movable openings, the circular knife holder is movably disposed within the movable openings, the left and right drive mechanisms include a first cylinder, the first cylinder is fixedly connected to the rotating seat, the piston rod of the first cylinder penetrates into the rotating seat and is fixedly connected to the cutting tool sleeve, and the front and rear drive mechanisms include a second cylinder, the second cylinder is connected to the support seat.

[0015] In summary, the beneficial effects of the present invention are as follows:

[0016] 1. The circular cutter shaft of this invention is divided into a left circular cutter shaft and a right circular cutter shaft. The left and right circular cutter shafts are engaged by a left snap-fit ​​connector and a right snap-fit ​​connector. When the circular cutter on the left or right circular cutter shaft needs to be replaced, the front and rear drive mechanisms can drive the support seat forward, thereby causing the rotating seat to drive the swivel sleeve and the circular cutter shaft forward, moving the circular cutter shaft away from the bottom cutter shaft. Then, the left and right drive mechanisms drive the swivel sleeve to move the left and right circular cutter shafts away from each other, thus separating the left snap-fit ​​connector and the right snap-fit ​​connector. At this time, it is possible to... The left and right circular cutter shafts can be rotated forward directly to replace the circular cutter. The forward rotation of the left and right circular cutter shafts is achieved through a structure in which the rotating seat is connected to the support base. The left and right circular cutter shafts can be rotated out individually to replace the circular cutters on them. Therefore, regardless of whether the circular cutter to be replaced is on the left or right circular cutter shaft, it is only necessary to remove the corresponding circular cutter from the left or right circular cutter shaft, which facilitates the replacement of the circular cutter and improves the convenience and efficiency of tool changing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;

[0020] Figure 3 This is a schematic diagram of the structure of the present invention after removing the mounting frame and auxiliary support frame;

[0021] Figure 4 for Figure 3 A magnified view of a portion of point B in the middle;

[0022] Figure 5 for Figure 3 A magnified view of a portion of point C in the middle;

[0023] Figure 6 This is a schematic diagram of the structure of the left wall panel and the left circular cutter shaft in this invention;

[0024] Figure 7 for Figure 6 Top view;

[0025] Figure 8 for Figure 7Schematic diagram of the cross-sectional structure along the BB direction;

[0026] Figure 9 for Figure 8 A magnified view of a portion of point D in the middle;

[0027] Figure 10 This is a schematic diagram of the bottom cutter shaft and bottom cutter pushing mechanism in this invention;

[0028] Figure 11 This is a schematic diagram of the bottom cutter shaft in this invention;

[0029] Figure 12 for Figure 11 Schematic diagram of the cross-sectional structure along the CC direction;

[0030] Figure 13 for Figure 12 A schematic diagram of the cross-sectional structure of E in the middle;

[0031] Figure 14 This is a front view of the bottom blade pushing mechanism in this invention;

[0032] Figure 15 for Figure 14 Schematic diagram of the cross-sectional structure along the DD direction.

[0033] In the diagram: 1. Left wall panel; 2. Right wall panel; 3. Bottom cutter shaft; 4. Bottom cutter; 5. Left circular cutter shaft; 6. Right circular cutter shaft; 7. Left snap-fit ​​connector; 8. Right snap-fit ​​connector; 9. Circular cutter; 10. Circular cutter holder; 11. Combined cutter sleeve; 12. Rotary seat; 13. Support seat; 14. Left snap-fit ​​protrusion; 15. Left snap-fit ​​groove; 16. Right snap-fit ​​groove; 17. Right snap-fit ​​protrusion; 18. Motor; 19. Lead screw; 20. Guide shaft; 21. Cutter adjustment seat; 22. Left threaded section; 23. Right threaded section; 24. Cutter adjustment side plate; 25. Cutter adjustment swing arm; 26. Cutter adjustment. 27. Motor; 28. Bottom knife slot; 29. ​​Limit block; 30. Spring; 31. Release plane; 32. Fixed plane; 33. Fixed inner cavity; 34. Bottom knife fixed shaft; 35. Rotating handle; 36. Threaded seat; 37. Sliding port; 38. Insertion post; 39. Insertion post spring; 40. Conical inclined block; 41. Drive motor; 42. Transmission gear; 43. Driven gear; 44. Mounting bracket; 45. Auxiliary support bracket; 46. Auxiliary cylinder; 47. Movable port; 48. First cylinder; 49. Second cylinder; 50. Dust collection box. Detailed Implementation

[0034] The following will refer to the appendices in the embodiments of the present invention. Figure 1-15The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0035] Example:

[0036] like Figures 3 to 9 As shown, this invention discloses a slitting mechanism for easy blade changing in a slitting machine, including a left wall plate 1 and a right wall plate 2. A circular blade shaft and a bottom blade shaft 3 are arranged parallel to each other between the left wall plate 1 and the right wall plate 2. Several bottom blades 4 are provided on the bottom blade shaft 3. The circular blade shaft includes a left circular blade shaft 5 and a right circular blade shaft 6 arranged symmetrically. The left circular blade shaft 5 is provided with a left locking connector 7, and the right circular blade shaft 6 is provided with a right locking connector 8 for engaging with the left locking connector 7. The left circular blade shaft 5 and the right circular blade shaft 6 rotate coaxially through the cooperation of the left locking connector 7 and the right locking connector 8. Both the left circular blade shaft 5 and the right circular blade shaft 6 are provided with circular cutting blades 9 corresponding to the bottom blades 4. Figure 4 , Figures 7 to 9 As shown, circular cutter holders 10 are movably mounted on both the left wall panel 1 and the right wall panel 2. Specifically, both the left wall panel 1 and the right wall panel 2 have movable openings 47, within which the circular cutter holders 10 can move back and forth and left and right. Furthermore, the left circular cutter shaft 5 is rotatably connected to the circular cutter holder 10 on the left wall panel 1 along its own axis, while the right circular cutter shaft 6 is rotatably connected to the circular cutter holder 10 on the right wall panel 2 along its own axis. The ends of the left and right circular cutter shafts 5 and 6, which are far apart from each other, both extend out of the circular cutter holders 10 and are rotatably fitted with a merging cutter sleeve 11. A rotating seat 12 is movably fitted outside the merging cutter sleeve 11, allowing the merging cutter sleeve 11 to move left and right relative to the rotating seat 12. Then, both the left and right wall panels 1 and 2 are rotatably mounted on the merging cutter sleeve 11. Support seats 13 are slidably mounted on the upper and lower ends of the base 12. The support seats 13 are slidably connected to the left wall plate 1 and the right wall plate 2 via a slider rail assembly. The upper and lower ends of the rotating base 12 are rotatably connected to the support seats 13. A first cylinder 48 is provided on the rotating base 12 to drive the cutting tool sleeve 11 to move left and right. The first cylinder 48 is fixedly connected to the rotating base 12. The piston rod of the first cylinder 48 penetrates into the rotating base 12 and is fixedly connected to the cutting tool sleeve 11. A second cylinder 49 is provided on both the left wall plate 1 and the right wall plate 2 to drive the support seats 13 to move back and forth. The second cylinder 49 is connected to the support seats 13 and drives the rotating base 12 to move back and forth by driving the support seats 13.

[0037] Specifically, such as Figure 2As shown, several left snap-fit ​​protrusions 14 are evenly arranged in a circle on the left snap-fit ​​connector 7, and a left snap-fit ​​groove 15 is provided between each left snap-fit ​​protrusion 14. The right snap-fit ​​connector 8 is provided with a right snap-fit ​​groove 16 for the left snap-fit ​​protrusions 14 to snap into and a right snap-fit ​​protrusion 17 for snapping into the left snap-fit ​​groove 15. When the first cylinder 48 pushes the blade sleeve 11, causing the left circular blade shaft 5 and the right circular blade shaft 6 to approach each other, the left snap-fit ​​connector 7 and the right snap-fit ​​connector 8 snap into each other, so that the left circular blade shaft 5 and the right circular blade shaft 6 are installed together and rotate synchronously during cutting. When the first cylinder 48 drives the left circular blade shaft 5 and the right circular blade shaft 6 to move away from each other, the left snap-fit ​​connector 7 and the right snap-fit ​​connector 8 separate, so that the left circular blade shaft 5 and the right circular blade shaft 6 can be rotated out.

[0038] In this invention, the circular cutter 9 on the left circular cutter shaft 5 is used to join the left side of the bottom cutter 4 on the left half of the bottom cutter shaft 3, while the circular cutter 9 on the right circular cutter shaft 6 is used to join the right side of the bottom cutter 4 on the right half of the bottom cutter shaft 3. It should be noted that when the left circular cutter shaft 5 and the right circular cutter shaft 6 are engaged together, the distance between each circular cutter 9 on the left circular cutter shaft 5 and the right circular cutter shaft 6 is the same. A bottom cutter pushing mechanism is provided between the left wall plate 1 and the right wall plate 2. The bottom cutter pushing mechanism is used to drive the bottom cutters 4 on the left and right halves of the bottom cutter shaft 3. The upper part moves axially in the opposite direction. Because the circular cutter 9 needs to be closely joined with the bottom cutter 4 to form a shearing force during the cutting process, it is convenient to cut the material. Therefore, before moving the circular cutter shaft forward, the bottom cutter 4 needs to be moved axially first, so that a certain gap is created between the bottom cutter 4 and the circular cutter 9. Since the circular cutters 9 on the left circular cutter shaft 5 and the right circular cutter shaft 6 are joined at different positions on the bottom cutter 4, the bottom cutters 4 on the left and right halves of the bottom cutter shaft 3 need to move axially in the opposite direction on the bottom cutter shaft 3.

[0039] The working principle of this invention is as follows: When it is necessary to replace the circular cutter 9, the bottom cutter pushing mechanism first drives the bottom cutter 4 to separate the circular cutter 9 on the left and right circular cutter shafts 5 and 6. Then, the second cylinder 49 drives the support seat 13 to move forward, and the support seat 13 drives the rotating seat 12 to move the circular cutter seat 10, the left circular cutter shaft 5, and the right circular cutter shaft 6 forward. Therefore, the circular cutter 9 on the left and right circular cutter shafts 5 and 6 separates from the bottom cutter 4. Next, the first cylinder 48 drives the cutter sleeve 11, thereby moving the left and right circular cutter shafts 5 and 6 away from each other. Thus, the left retaining connector 7 and the right retaining connector 8 separate. At this time, the left and right circular cutter shafts 5 and 6 can be directly rotated forward to replace the circular cutter 9. The forward rotation of the left and right circular cutter shafts 5 and 6 is achieved by rotating the rotating seat 12. The structure connected to the support base 13 allows the left circular cutter shaft 5 and the right circular cutter shaft 6 to be rotated out individually for replacement of the circular cutter 9. Therefore, regardless of whether the circular cutter 9 to be replaced is on the left circular cutter shaft 5 or the right circular cutter shaft 6, it is only necessary to remove the corresponding circular cutter 9 from the left circular cutter shaft 5 or the right circular cutter shaft 6. After installing the circular cutter 9, the left circular cutter shaft 5 and the right circular cutter shaft 6 are rotated back to the same axis. Then, the first cylinder 48 drives the blade sleeve 11 to bring the left circular cutter shaft 5 and the right circular cutter shaft 6 closer to each other, and the left retaining connector 7 and the right retaining connector 8 are engaged. Then, the second cylinder 49 drives the support base 13 to move backward, and the left circular cutter shaft 5 and the right circular cutter shaft 6 approach the bottom cutter shaft 3. Then, the bottom cutter pushing mechanism drives the bottom cutter 4 to approach the circular cutter 9, realizing the blade merging of the bottom cutter 4 and the circular cutter 9.

[0040] Specifically, such as Figure 10 and Figure 14 As shown, the bottom knife pushing mechanism includes a motor 18, a lead screw 19, a guide shaft 20, and a knife adjusting seat 21. The lead screw 19 and the guide shaft 20 are located between the left wall plate 1 and the right wall plate 2, while the motor 18 is fixed on the right wall plate 2 and connected to the lead screw 19. The knife adjusting seat 21 is threaded onto the lead screw 19 and also slidably fitted onto the guide shaft 20. The position and number of the knife adjusting seats 21 correspond to the bottom knives 4. A bottom knife connecting mechanism for fixing the bottom knives 4 is provided on the knife adjusting seat 21. Additionally, it should be noted that... Yes, the lead screw 19 includes a left threaded section 22 and a right threaded section 23. The threads of the left threaded section 22 and the right threaded section 23 have opposite directions. The tool adjusting seat 21 corresponding to the bottom cutter 4 on the left half of the bottom cutter shaft 3 is threaded on the left threaded section 22, and the tool adjusting seat 21 corresponding to the bottom cutter 4 on the right half of the bottom cutter shaft 3 is threaded on the right threaded section 23. Therefore, when the lead screw 19 rotates, the bottom cutter 4 on the left and right halves of the bottom cutter shaft 3 can be driven to move axially in opposite directions on the bottom cutter shaft 3 through the bottom cutter connecting mechanism on the tool adjusting seat 21.

[0041] More specifically, such as Figure 14 and Figure 15As shown, the bottom knife connecting mechanism includes a knife adjusting side plate 24, a knife adjusting swing arm 25, and a knife adjusting motor 26. The knife adjusting side plate 24 is fixedly connected to the knife adjusting base 21, while the knife adjusting swing arm 25 is rotatably connected to the knife adjusting side plate 24. A bottom knife slot 27 for the rear side of the bottom knife 4 to be inserted is provided on the knife adjusting swing arm 25. The knife adjusting motor 26 is fixed to the knife adjusting side plate 24 and connected to the knife adjusting swing arm 25. The motor 18 can drive the knife adjusting swing arm 25 to rotate. After the rear side of the bottom knife 4 is inserted into the bottom knife slot 27, the knife adjusting base 21 can drive the bottom knife 4 to move synchronously when it moves left and right.

[0042] Furthermore, the bottom knife connecting mechanism also includes a limiting block 28 and a spring 29. The limiting block 28 is slidably disposed on the knife adjusting side plate 24, while the spring 29 abuts against the limiting block 28 to push the limiting block 28 downward. The knife adjusting arm 25 is provided with a loosening plane 30 and a fixing plane 31 for cooperating with the limiting block 28. When the limiting block 28 abuts against the loosening plane 30, the knife adjusting arm 25 is separated from the rear side of the bottom knife 4. When the limiting block 28 abuts against the fixing plane 31, the knife adjusting arm 25 is attached to the rear side of the bottom knife 4, and the rear side of the bottom knife 4 is located in the bottom knife slot 27. This structure can ensure the stability of the structure whether the knife adjusting arm 25 is in a loosened or locked state with the bottom knife 4.

[0043] Regarding how the bottom cutter 4 is set on the bottom cutter shaft 3: (as follows) Figure 12 and 13 As shown, a fixed inner cavity 32 is provided inside the bottom cutter shaft 3. A bottom cutter fixing shaft 33 is rotatably fitted inside the fixed inner cavity 32. One end of the bottom cutter fixing shaft 33 extends out of the bottom cutter shaft 3 and is detachably connected to a rotating handle 34. The rotating handle 34 is removed when not in use. A threaded seat 35 is fixedly connected to the bottom cutter shaft 3 inside the fixed inner cavity 32. The end of the bottom cutter fixing shaft 33 away from the rotating handle 34 is threaded onto the threaded seat 35. Therefore, when the rotating handle 34 is rotated, the bottom cutter fixing shaft 33 can move back and forth a certain distance. The bottom cutter 4 is sleeved on the bottom cutter shaft 3, and a sliding part penetrating into the fixed inner cavity 32 is provided on the inner side of the bottom cutter 4 on the bottom cutter shaft 3. The sliding port 36 has a sliding insertion post 37 that is slidably disposed inside. The inner side of the bottom knife 4 has an insertion port 38 for inserting the insertion post 37. The bottom knife shaft 3 is provided with an insertion post spring 39 for pushing the insertion post 37 toward the bottom knife fixing shaft 33. The bottom knife fixing shaft 33 is fixedly connected with a conical inclined block 40 for pushing the insertion post 37 into the insertion port 38. Therefore, by rotating the bottom knife fixing shaft 33, the conical inclined block 40 can be displaced, thereby allowing the insertion post 37 to enter or exit the insertion port 38, thus fixing and releasing the bottom knife 4. Before the bottom knife pushing mechanism drives the bottom knife to move, the insertion post 37 needs to be withdrawn from the insertion port 38 to release the fixation of the bottom knife 4.

[0044] like Figure 1 and Figure 3 As shown, a drive motor 41 for driving the bottom cutter shaft 3 to rotate is provided on the left wall plate 1, and a transmission gear 42 is keyed to the bottom cutter shaft 3. A driven gear 43 for meshing with the transmission gear 42 is fixedly connected to the left circular cutter shaft 5. The drive motor 41 drives the bottom cutter shaft 3, and the bottom cutter shaft 3 then drives the driven gear 43 through the transmission gear 42, thereby causing the left circular cutter shaft 5 to rotate.

[0045] In addition, such as Figure 1 As shown, a mounting bracket 44 is fixedly connected to the left wall panel 1. An auxiliary support bracket 45 is mounted on the mounting bracket 44 in an up-and-down sliding manner. The auxiliary support bracket 45 is located directly below the left circular cutter shaft 5 and the right circular cutter shaft 6. An auxiliary cylinder 46 for controlling the up-and-down movement of the auxiliary support bracket 45 is fixedly connected to the mounting bracket 44. After the left circular cutter shaft 5 and the right circular cutter shaft 6 are separated, the ends of the left circular cutter shaft 5 and the right circular cutter shaft 6 that are away from the circular cutter holder 10 may tilt slightly downwards under their own weight. This makes it difficult for the left clamping connector 7 and the right clamping connector 8 to align. Therefore, when the left circular cutter shaft 5 and the right circular cutter shaft 6 approach each other, the auxiliary support bracket 45 can be moved upwards by the auxiliary cylinder 46 to support the ends of the left circular cutter shaft 5 and the right circular cutter shaft 6 that are away from the circular cutter holder 10, thereby ensuring that the left circular cutter shaft 5 and the right circular cutter shaft 6 are aligned on the same axis for docking.

[0046] The present invention also provides a dust collection box 50 below the left wall panel 1 and the right wall panel 2, which is used to collect the dust that falls during the cutting process.

[0047] It should also be noted that the terms used in this invention, such as "front," "rear," "vertical," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A slitting mechanism of a slitter for facilitating knife change, comprising a left wall plate and a right wall plate, characterized in that: The left wallboard and the right wallboard are provided with a circular cutter shaft and a bottom cutter shaft in front and back parallel between the left wallboard and the right wallboard, the bottom cutter shaft is provided with a plurality of bottom cutters, the circular cutter shaft includes symmetrically arranged left and right circular cutter shafts, the left circular cutter shaft is provided with a left joint, the right circular cutter shaft is provided with a right joint for clamping the left joint, the left and right circular cutter shafts are provided with circular cutters corresponding to the bottom cutters, the left and right wallboards are movably provided with circular cutter seats, the left circular cutter shaft is rotationally connected to the circular cutter seat of the left wallboard along its own axis, the right circular cutter shaft is rotationally connected to the circular cutter seat of the right wallboard along its own axis, the left and right circular cutter shafts are provided with cutter sleeves at the ends away from each other and penetrating the circular cutter seats, the cutter sleeves are movably sleeved with rotary seats, the left and right wallboards are provided with support seats slidingly arranged in front and back on the upper and lower ends of the rotary seats, the upper and lower ends of the rotary seats are rotationally connected to the support seats, the rotary seats are provided with left and right driving mechanisms for driving the cutter sleeves to move left and right, the left and right wallboards are provided with front and back driving mechanisms for driving the support seats to move forward and backward, the circular cutters on the left circular cutter shaft are used for being combined on the left side of the bottom cutters on the left half of the bottom cutter shaft, the circular cutters on the right circular cutter shaft are used for being combined on the right side of the bottom cutters on the right half of the bottom cutter shaft, the left wallboard and the right wallboard are provided with a bottom cutter pushing mechanism, the bottom cutter pushing mechanism is used for driving the bottom cutters on the left and right halves of the bottom cutter shaft to move in the opposite directions on the bottom cutter shaft, the bottom cutter pushing mechanism includes a motor, a lead screw, a guide shaft and an adjusting cutter seat, the lead screw and the guide shaft are located between the left wallboard and the right wallboard, the motor is fixed on the right wallboard and connected with the lead screw, the adjusting cutter seat is threadedly connected to the lead screw, the adjusting cutter seat is slidingly connected to the guide shaft, the position and the number of the adjusting cutter seat correspond to the bottom cutters, the adjusting cutter seat is provided with a bottom cutter connecting mechanism for fixing the bottom cutters, the lead screw includes a left threaded section and a right threaded section, the threads of the left threaded section and the right threaded section are opposite in rotation direction, the bottom cutter connecting mechanism includes an adjusting cutter side plate, an adjusting cutter swing arm and an adjusting cutter motor, the adjusting cutter side plate is fixedly connected to the adjusting cutter seat, the adjusting cutter swing arm is rotationally connected to the adjusting cutter side plate, the adjusting cutter swing arm is provided with a bottom cutter clamping groove on the upper side for clamping the rear side of the bottom cutter, the adjusting cutter motor is fixed to the adjusting cutter side plate and connected with the adjusting cutter swing arm, the bottom cutter connecting mechanism further includes a limiting block and a spring, the limiting block is slidingly arranged on the adjusting cutter side plate, the spring is abutted on the limiting block and used for pushing the limiting block downward, the adjusting cutter swing arm is provided with a loosening plane and a fixing plane matched with the limiting block, the bottom cutter shaft is provided with a fixed inner cavity, the bottom cutter shaft is rotationally connected with a bottom cutter fixing shaft in the fixed inner cavity, one end of the bottom cutter fixing shaft penetrates the bottom cutter shaft and is detachably connected with a rotating handle, the bottom cutter shaft is fixedly connected with a threaded seat in the fixed inner cavity, the end of the bottom cutter fixing shaft away from the rotating handle is threadedly connected to the threaded seat, the bottom cutter is sleeved on the bottom cutter shaft, the bottom cutter shaft is provided with a sliding opening penetrating into the fixed inner cavity on the inner side of the bottom cutter,The sliding part in the sliding port is provided with an insertion column, an insertion port for the insertion column is formed on the inner side of the bottom knife, an insertion column spring for pushing the insertion column towards the bottom knife fixing shaft is arranged on the bottom knife shaft, and a conical inclined surface block for pushing the insertion column into the insertion port is fixedly connected to the bottom knife fixing shaft.

2. The slitting mechanism of claim 1, wherein: The left clamping head is uniformly provided with a plurality of left clamping protrusions in a circle, and the left clamping protrusions are provided with left clamping grooves.

3. The slitting mechanism of claim 1, wherein: The left wall plate is provided with a driving motor for driving the bottom cutter shaft to rotate, the bottom cutter shaft is provided with a transmission gear connected by a key, and the left circular cutter shaft is provided with a driven gear fixedly connected and engaged with the transmission gear.

4. The slitter according to claim 1, wherein: The left wall plate is fixedly connected with a mounting frame, the mounting frame is provided with an auxiliary support frame in an up-down sliding mode, the auxiliary support frame is located directly below the left circular cutter shaft and the right circular cutter shaft, and the mounting frame is fixedly connected with an auxiliary cylinder for controlling the up-down movement of the auxiliary support frame.

5. The slitter according to claim 1, wherein: The left wall plate and the right wall plate are both provided with an activity opening, the circular cutter seat is movably arranged in the activity opening, the left-right driving mechanism comprises a first cylinder, the first cylinder is fixedly connected to the rotating seat, the piston rod of the first cylinder penetrates into the rotating seat and is fixedly connected to the cutter sleeve, and the front-rear driving mechanism comprises a second cylinder, the second cylinder is connected with the support seat. The left clamping head is uniformly provided with a plurality of left clamping protrusions in a circle, and the left clamping protrusions are provided with left clamping grooves.

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