A kind of sticking and retracting mechanism and slitting machine

Abstract

The present invention discloses a knife-sticking and retracting mechanism and a slitting machine. The knife-sticking and retracting mechanism includes two opposing mounting seats, a bottom knife shaft, an upper knife shaft, and a drive assembly. The ends of the bottom knife shaft are rotatably mounted on the two mounting seats via two bottom knife shaft bearing seats, and a circular bottom knife is sleeved on the outer circumference of the bottom knife shaft. The upper knife shaft is arranged parallel to the bottom knife shaft, and a circular cutter is sleeved on the outer circumference of the upper knife shaft. The blade of the circular cutter is close to the bottom knife shaft, and the circular cutter and the circular bottom knife are spaced apart along the axial direction of the bottom knife shaft and the upper knife shaft. The ends of the upper knife shaft are rotatably mounted in a first knife shaft fixing seat and a second knife shaft fixing seat via a first upper knife shaft bearing seat and a second upper knife shaft bearing seat, respectively. The first knife shaft fixing seat and the second knife shaft fixing seat are respectively mounted on the two mounting seats. The drive assembly is connected to the first upper knife shaft bearing seat. The present invention improves production efficiency and reduces production costs.

Description

Technical Field

[0001] The present invention relates to the technical field of slitting, and in particular to a knife-sticking and withdrawing mechanism and a slitting machine. Background Art

[0002] The positive and negative electrodes of lithium batteries are typically separated by a separator. During the lithium battery production process, before the positive and negative electrodes are stacked in a Z-shaped stack, the separator must be cut to meet stacking requirements. Currently, a slitting machine is typically used to cut the separator.

[0003] The slitting mechanism of an existing slitting machine generally includes a frame, on which are provided a row of cutter rollers and a receiving roller arranged in parallel in a front-to-back manner. Both the row of cutter rollers and the receiving rollers can rotate relative to the frame, and the receiving rollers can move relative to the frame toward or away from the row of cutter rollers. The outer periphery of the row of cutter rollers is provided with a plurality of circular cutters, and the outer periphery of the center of the receiving rollers is provided with a circular bottom knife. The row of cutter rollers and the circular bottom knife are arranged on the row of cutter rollers and the receiving rollers according to the slitting spacing by the row of cutter mechanism, so that the circular cutters and the circular bottom knife fit in the set position to slit the strip. However, during operation, the equipment sometimes needs to be shut down, at which time the circular cutter and the circular bottom knife need to be separated, that is, the circular cutter needs to be retracted. Although the row of cutter rollers of the existing slitting machine can achieve this function, it can only operate the circular cutters on the row of cutter rollers one by one, resulting in low retraction efficiency and long retraction time, which reduces production efficiency and increases production costs. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a knife-applying and knife-retracting mechanism and a slitting machine, which can quickly realize the knife-applying and knife-retracting actions of the circular cutting knife and the circular bottom knife, thereby improving production efficiency and reducing production costs.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] The first aspect of the present invention provides a knife-sticking and retracting mechanism, comprising two mounting seats arranged opposite to each other, a bottom knife shaft, an upper knife shaft and a driving assembly; the two ends of the bottom knife shaft are rotatably arranged on the two mounting seats through two bottom knife shaft bearing seats, and the outer periphery of the bottom knife shaft is provided with a circular bottom knife; the upper knife shaft is arranged in parallel with the bottom knife shaft, and the outer periphery of the upper knife shaft is provided with a circular cutting knife, the blade of the circular cutting knife is close to the bottom knife shaft, and the circular cutting knife and the circular bottom knife are arranged at intervals along the axial direction of the bottom knife shaft and the upper knife shaft, and the two ends of the upper knife shaft are rotatably arranged on the first knife shaft bearing seat and the second knife shaft bearing seat respectively. The first cutter shaft fixing seat and the second cutter shaft fixing seat are respectively arranged on the two mounting seats; the driving component is connected to the first upper cutter shaft bearing seat, and the driving component is used to drive the first upper cutter shaft bearing seat to move back and forth along the axial direction of the upper cutter shaft in the first cutter shaft fixing seat, thereby driving the upper cutter shaft to move back and forth along its axial direction, and then driving the second upper cutter shaft bearing seat to move back and forth along the axial direction of the upper cutter shaft in the second cutter shaft fixing seat, and driving the circular cutter to move back and forth along the axial direction of the upper cutter shaft to make the circular cutter approach or move away from the circular bottom cutter.

[0007] As a preferred technical solution, a first adjustment seat is provided in the first blade shaft fixing seat, a second adjustment seat is provided in the second blade shaft fixing seat, the first upper blade shaft bearing seat is arranged in the first adjustment seat, and the second upper blade shaft bearing seat is arranged in the second adjustment seat. The first upper blade shaft bearing seat can move back and forth along the axial direction of the upper blade shaft in the first adjustment seat, and the second upper blade shaft bearing seat can move back and forth along the axial direction of the upper blade shaft in the second adjustment seat.

[0008] As an optimal technical solution, the driving assembly includes a driving handle, a connecting rod and a nut. The connecting rod is provided at the end of the first upper cutter shaft bearing seat away from the center of the upper cutter shaft, and the end of the connecting rod away from the first upper cutter shaft bearing seat passes through the through hole of the first adjustment seat and extends out of the first cutter shaft fixing seat. The nut is located outside the first cutter shaft fixing seat and is sleeved on the outer periphery of the connecting rod. The nut is threadedly matched with the external thread provided on the outer peripheral surface of the connecting rod. The driving handle is located on one side of the nut, and the connecting end of the driving handle is connected to the nut. By rotating the driving handle, the nut can be driven to rotate. The rotation of the nut can drive the connecting rod to move back and forth along the axial direction of the upper cutter shaft, thereby driving the first upper cutter shaft bearing seat to move back and forth along the axial direction of the upper cutter shaft.

[0009] As a preferred technical solution, a locking piece is provided on the outer periphery of the nut, and the locking piece has a locking piece opening. Two locking piece mounting holes are respectively provided on the inner walls on both sides of the locking piece opening, and the two locking piece mounting holes extend to the outer periphery of the locking piece respectively. A first fastener is installed in the two locking piece mounting holes, and the first fastener abuts against the outer periphery of the nut, and the connecting end of the driving handle is connected to the locking piece.

[0010] As a preferred technical solution, a mounting bracket is provided at one end of the first tool shaft fixing seat away from the center of the upper tool shaft, a first sight is installed on the mounting bracket, and the probe rod of the first sight is connected to the end of the connecting rod away from the first upper tool shaft bearing seat.

[0011] As a preferred technical solution, a first end cover is provided at one end of the first adjustment seat away from the center of the upper cutter shaft, the first end cover is located outside the first cutter shaft fixing seat and the top end of the first end cover is against the end of the first cutter shaft fixing seat away from the center of the upper cutter shaft, the first end cover is sleeved on the outer periphery of one end of the nut close to the first upper cutter shaft bearing seat, the nut can rotate relative to the first end cover, and a limiting member is vertically provided at one end of the first end cover away from the first adjustment seat, and the limiting member is located on the same side as the driving handle and above the driving handle.

[0012] As a preferred technical solution, a locking block is provided on the outer periphery of the nut, and the locking block is arranged at the end of the first end cover away from the first adjustment seat. The locking block has a locking block opening, and two locking block mounting holes are respectively provided on the inner walls on both sides of the locking block opening. The two locking block mounting holes extend to the outer periphery of the locking block respectively, and a second fastener is installed in the two locking block mounting holes, and the second fastener abuts against the outer periphery of the nut.

[0013] As an optimal technical solution, a mounting block is provided at one end of the second adjustment seat away from the center of the upper cutter shaft, and a second end cover is provided at one end of the mounting block away from the second adjustment seat, the second end cover is located outside the second cutter shaft fixing seat and the top of the second end cover is against the end of the second cutter shaft fixing seat away from the center of the upper cutter shaft; a positioning shaft and a positioning elastic member are provided in the inner cavity of the mounting block, one end of the positioning elastic member is connected to the second end cover, the other end of the positioning elastic member is connected to one end of the positioning shaft, and the other end of the positioning shaft extends out of the mounting block and is connected to the second upper cutter shaft bearing seat; a positioning block is formed on the outer periphery of the positioning shaft, and a limiting block is formed on the inner wall of the inner cavity of the mounting block, the positioning block is located in the inner cavity and between the limiting block and the second end cover, and the positioning block is against the limiting block.

[0014] As a preferred technical solution, it also includes a first adjustment component and a second adjustment component for adjusting the distance and parallelism between the upper knife shaft and the bottom knife shaft.

[0015] As a preferred technical solution, the first adjusting component includes a second sight, a first lever and a first rolling body, a first hole is provided on the first side of the first tool shaft fixing seat, the first hole is connected to the interior of the first tool shaft fixing seat and the first hole extends to the top of the first tool shaft fixing seat, the first fixed shaft is rotatably provided in the first hole, the second sight is set at the top of the first tool shaft fixing seat, the first lever is sleeved on the outer periphery of the first fixed shaft and is inclined relative to the first tool shaft fixing seat, one end of the first lever is located above the first tool shaft fixing seat and connected to the probe rod of the second sight, the other end is located in the first tool shaft fixing seat and is provided with a first rolling body, the first rolling body is against the first side of the first adjusting seat, and a first connecting plate is provided on the second side of the first tool shaft fixing seat, the first connecting plate is threadedly connected to the first adjusting knob, and the end of the first adjusting knob extends into the first tool shaft fixing seat and is against the second side of the first adjusting seat.

[0016] As a preferred technical solution, a second rolling body is provided on the first lever, and the second rolling body is located in the first hole position and above the first fixed axis. The first knife shaft fixing seat is provided with a first mounting position connected to the first hole position, and a first elastic member is provided in the first mounting position. A first pressure plate is provided on the second side of the first knife shaft fixing seat, one end of the first elastic member is connected to the first pressure plate, and the other end is provided with a first conduction block, an end of the first conduction block away from the first elastic member extends from the first mounting position and is located in the first hole position, an end of the first conduction block away from the first elastic member is against the second rolling body, and the first elastic member is in a compressed state.

[0017] As a preferred technical solution, the second adjusting assembly includes a third sight, a second lever and a third rolling body, a first side of the second tool shaft fixing seat is provided with a second hole, the second hole is connected to the interior of the second tool shaft fixing seat and the second hole extends to the top of the second tool shaft fixing seat, a second fixed shaft is rotatably provided in the second hole, the third sight is set at the top of the second tool shaft fixing seat, the second lever is sleeved on the outer periphery of the second fixed shaft and is inclined relative to the second tool shaft fixing seat, one end of the second lever is located above the second tool shaft fixing seat and connected to the probe rod of the third sight, the other end is located in the second tool shaft fixing seat and is provided with a third rolling body, the third rolling body is against the first side of the second adjusting seat, and a second connecting plate is provided on the second side of the second tool shaft fixing seat, a second adjusting knob is threadedly installed on the second connecting plate, and the end of the second adjusting knob extends into the second tool shaft fixing seat and against the second side of the second adjusting seat.

[0018] As a preferred technical solution, a fourth rolling body is provided on the second lever, and the fourth rolling body is located in the second hole and above the second fixed shaft. The second knife shaft fixing seat is provided with a second mounting position connected to the second hole, and a second elastic member is provided in the second mounting position. A second pressure plate is provided on the second side of the second knife shaft fixing seat, one end of the second elastic member is connected to the second pressure plate, and the other end is provided with a second conduction block, an end of the second conduction block away from the second elastic member extends from the second mounting position and is located in the second hole, an end of the second conduction block away from the second elastic member is against the fourth rolling body, and the second elastic member is in a compressed state.

[0019] A second aspect of the present invention provides a slitting machine, comprising the blade-sticking and retracting mechanism described in the above technical solution.

[0020] The beneficial effects of the present invention are as follows: the present invention drives the upper cutter shaft to move back and forth along its axial direction through the driving component, so as to drive the circular cutter on the upper cutter shaft to approach or move away from the circular bottom cutter, thereby realizing the knife contact or retraction, which is convenient for threading the diaphragm and slitting the diaphragm, and the circular cutter is driven by the upper cutter shaft to contact or retract along the axial direction of the upper cutter shaft, which can realize the rapid contact and separation of the circular cutter and the circular bottom cutter when the production process is stopped, thereby improving production efficiency and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and examples.

[0022] Figure 1 This is a schematic structural diagram of the front side of a knife sticking and retracting mechanism provided by one embodiment of the present invention;

[0023] Figure 2 yes Figure 1 A schematic structural diagram of the rear side of the knife-sticking and retracting mechanism shown;

[0024] Figure 3 yes Figure 1 A schematic structural diagram of the right end of the knife-sticking and retracting mechanism shown;

[0025] Figure 4 yes Figure 1 A schematic structural diagram of the rear right end of the knife-retracting mechanism shown;

[0026] Figure 5 yes Figure 1 The structural diagram of the left end of the knife-sticking and retracting mechanism shown;

[0027] Figure 6 yes Figure 1 The right end of the knife-sticking and retracting mechanism is shown as a cross-sectional schematic diagram after being cut through the axis of the upper knife shaft;

[0028] Figure 7 yes Figure 1 The left end of the knife-sticking and retracting mechanism is shown as a cross-sectional schematic diagram after being cut through the axis of the upper knife shaft;

[0029] Figure 8 yes Figure 1 A schematic structural diagram of the first blade shaft fixing seat, the first adjustment seat and the first adjustment assembly of the blade-sticking and retracting mechanism shown;

[0030] Figure 9 yes Figure 1 A schematic structural diagram of the first adjustment seat and the first adjustment assembly of the tool sticking and retracting mechanism shown;

[0031] Figure 10 yes Figure 1 A schematic structural diagram of the second blade shaft fixing seat, the second adjustment seat and the second adjustment assembly of the blade retraction mechanism shown;

[0032] Figure 11 yes Figure 1 The diagram shows the structure of the second adjustment seat and the second adjustment component of the knife-sticking and retracting mechanism. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interactively without conflicting with each other.

[0034] Please refer to Figures 1 to 7 An embodiment of the present invention provides a knife-sticking and retracting mechanism, comprising two mounting seats 10 arranged opposite to each other on the left and right, a bottom knife shaft 20, an upper knife shaft 30, a driving assembly 50, a first adjusting assembly 60 and a second adjusting assembly 70.

[0035] The two mounting seats 10 are respectively arranged on two bottom plates 12 , and the two bottom plates 12 are respectively used to be arranged on a rack.

[0036] The left and right ends of the bed cutter shaft 20 are rotatably arranged on the two mounting seats 10 through two bed cutter shaft bearing seats 22. A circular bed cutter 21 is sleeved on the outer periphery of the bed cutter shaft 20. In this embodiment, the circular bed cutter 21 is close to the left end of the bed cutter shaft 20.

[0037] The upper cutter shaft 30 is located in front of the bottom cutter shaft 20. The upper cutter shaft 30 is arranged parallel to the bottom cutter shaft 20 in a front-to-back relationship. A circular cutter 31 is sleeved around the outer periphery of the middle portion of the upper cutter shaft 30. The cutting edge of the circular cutter 31 is adjacent to the bottom cutter shaft 20. The circular cutter 31 and the circular bottom cutter 21 are spaced axially apart from each other between the bottom cutter shaft 20 and the upper cutter shaft 30. The right end of the upper cutter shaft 30 is rotatably mounted within a first adjustment seat 36 via a first upper cutter shaft bearing seat 32, while the left end of the upper cutter shaft 30 is rotatably mounted within a second adjustment seat 37 via a second upper cutter shaft bearing seat 33. The first adjustment seat 36 is mounted within a first cutter shaft fixing seat 34, while the second adjustment seat 37 is mounted within a second cutter shaft fixing seat 35. The first cutter shaft fixing seat 34 and the second cutter shaft fixing seat 35 are respectively mounted on two mounting seats 10. The first cutter shaft fixing seat 34 and the second cutter shaft fixing seat 35 are respectively located in front of the two bottom cutter shaft bearing seats 22. The bottom cutter shaft bearing seat 22 is an existing structure, and its structure is not described here in detail.

[0038] In this embodiment, a first gear 41 is provided at the left end of the bottom cutter shaft 20, and a second gear 42 is provided at the left end of the upper cutter shaft 30. The second gear 42 meshes with the first gear 41. The first gear 41 is connected to a drive motor via a transmission gear or the like. The drive motor drives the first gear 41 to rotate. The rotation of the first gear 41 drives the bottom cutter shaft 20 to rotate synchronously, thereby driving the circular cutter 21 to rotate synchronously. The rotation of the first gear 41 also drives the second gear 42 to rotate synchronously in the opposite direction, thereby driving the upper cutter shaft 30 to rotate synchronously in a direction opposite to the rotation direction of the bottom cutter shaft 20. This, in turn, drives the circular cutter 31 to rotate synchronously in a direction opposite to the rotation direction of the circular cutter 21. In this way, when a diaphragm passes over the bottom cutter shaft 20, the circular cutter 31 and the circular cutter 21 can slit the diaphragm. The first upper cutter shaft bearing seat 32 and the second upper cutter shaft bearing seat 33 are also conventional structures, and their structures are not further described here.

[0039] In this embodiment, there are two round bottom knives 21, which are spaced apart, and one circular cutter 31. It is understandable that the number of the round bottom knives 21 and the circular cutter 31 can be set according to actual conditions.

[0040] The drive assembly 50 is connected to the first upper cutter shaft bearing seat 32. The drive assembly 50 is used to drive the first upper cutter shaft bearing seat 32 to reciprocate (i.e., move left and right) along the axial direction of the upper cutter shaft 30 within the first adjustment seat 36, thereby driving the upper cutter shaft 30 to reciprocate along its axial direction. This in turn drives the second upper cutter shaft bearing seat 33 to reciprocate along the axial direction of the upper cutter shaft 30 within the second adjustment seat 37, and drives the circular cutter 31 to reciprocate along the axial direction of the upper cutter shaft 30 to move the circular cutter 31 closer to or farther away from the circular bottom cutter 21, thereby achieving knife contact or knife retraction. The circular cutters 31 shown in the accompanying drawings of the present invention are all in the retracted position. In actual application, the diaphragm is first passed over the bottom cutter shaft 20 to thread the diaphragm, and then the first upper cutter shaft bearing seat 32 is driven by the drive assembly 50 to move leftward along the axial direction of the upper cutter shaft 30, thereby driving the upper cutter shaft 30 to move leftward, and then driving the circular cutter 31 to move leftward until it reaches the contact position. At this time, the bottom cutter shaft 20 and the upper cutter shaft 30 respectively drive the circular bottom cutter 21 and the circular cutter 31 to rotate synchronously in opposite directions, so that the circular cutter 31 and the circular bottom cutter 21 can achieve slitting of the diaphragm. After slitting is completed, the first upper cutter shaft bearing seat 32 is driven by the drive assembly 50 to move rightward along the axial direction of the upper cutter shaft 30 to the initial position, thereby driving the upper cutter shaft 30 to move leftward to the initial position, and then driving the circular cutter 31 to move leftward to the retracted position, which facilitates the next threading of the diaphragm.

[0041] The present invention drives the upper cutter shaft 30 to move back and forth along its axial direction through the driving component 50, so as to drive the circular cutter 31 on the upper cutter shaft 30 to approach or move away from the circular bottom cutter 21, thereby achieving the knife contact or retraction, which is convenient for threading the diaphragm and slitting the diaphragm. Moreover, by driving the circular cutter 31 along the axial direction of the upper cutter shaft 30 to contact or retract, the circular cutter 31 and the circular bottom cutter 21 can be quickly attached and separated when the production process is stopped, thereby improving production efficiency and reducing production costs.

[0042] The driving assembly 50 includes a driving handle 51, a connecting rod 52 and a nut 53. The end of the first upper cutter shaft bearing seat 32 away from the center of the upper cutter shaft 30 is provided with a connecting rod 52, and the end of the connecting rod 52 away from the first upper cutter shaft bearing seat 32 passes through the through hole 367 of the first adjustment seat 36 (see FIG. Figure 8 and Figure 9 ) and extends out of the first cutter shaft fixing seat 34. The nut 53 is located outside the first cutter shaft fixing seat 34 and is sleeved on the outer periphery of the connecting rod 52. The nut 53 is threadedly engaged with the external thread provided on the outer periphery of the connecting rod 52. The driving handle 51 is located on one side of the nut 53, such as in front of the nut 53. The connecting end of the driving handle 51 is connected to the end of the nut 53 away from the first upper cutter shaft bearing seat 32. The end of the driving handle 51 away from the nut 53 is tilted downward. By manually rotating the driving handle 51, the nut 53 can be driven to rotate. The rotation of the nut 53 can drive the connecting rod 52 to reciprocate along the axial direction of the upper cutter shaft 30, thereby driving the first upper cutter shaft bearing seat 32 to reciprocate along the axial direction of the upper cutter shaft 30 in the first adjustment seat 36.

[0043] In this embodiment, an annular locking member 55 is sleeved on the outer periphery of one end of the nut 53 away from the first upper cutter shaft bearing seat 32. The locking member 55 has a locking member opening 552, and two locking member mounting holes 553 are respectively provided on the inner walls on both sides of the locking member opening 552. The two locking member mounting holes 553 extend to the outer peripheral surface of the locking member 55 respectively. A first fastener, such as a bolt, is installed in the two locking member mounting holes 553. The first fastener abuts against the outer peripheral surface of the nut 53, thereby locking the locking member 55 and the nut 53 together. The connecting end of the driving handle 51 is connected to the locking member 55. By manually rotating the driving handle 51, the nut 53 can be driven to rotate under the action of the locking member 55. By removing the first fastener from the two locking member mounting holes 553, the locking member 55 and the nut 53 can be separated. After the first fastener is removed from the two locking member mounting holes 553 , the driving handle 51 is manually rotated. At this time, the driving handle 51 drives the locking member 55 to rotate on the outer peripheral surface of the nut 53 , and the nut 53 does not rotate.

[0044] In this embodiment, the first blade shaft fixing seat 34 has a first opening and a second opening at one end near the center of the upper blade shaft 30 and at the other end away from the center of the upper blade shaft 30, respectively. The first adjustment seat 36 has an end near the center of the upper blade shaft 30 located within the first opening and formed with a first protrusion 362. The first protrusion 362 is located outside the first blade shaft fixing seat 34, and the top of the first protrusion 362 abuts against the end of the first blade shaft fixing seat 34 near the center of the upper blade shaft 30. The first adjustment seat 36 has an end away from the center of the upper blade shaft 30 located within the second opening and has a first end cap 363. The first end cap 363 is located outside the first blade shaft fixing seat 34, and the top of the first end cap 363 abuts against the end of the first blade shaft fixing seat 34 away from the center of the upper blade shaft 30. The first end cap 363 is sleeved around the outer periphery of the end of the nut 53 near the first upper blade shaft bearing seat 32, and the nut 53 can rotate relative to the first end cap 363. The first protrusion 362 and the first end cover 363 are respectively used to limit the end of the first adjustment seat 32 close to the center of the upper cutter shaft 30 and the end away from the center of the upper cutter shaft 30, thereby preventing the first adjustment seat 32 from reciprocating along the axial direction of the upper cutter shaft 30.

[0045] A retaining ring 532 is provided around the outer periphery of the end of the nut 53 that is closest to the first upper blade shaft bearing seat 32. A groove is provided on the end of the first end cap 363 that is distal to the first adjustment seat 32. The retaining ring 532 engages with the groove of the first end cap 363. The retaining ring 532 serves to limit the nut 53 and prevent it from moving axially along the upper blade shaft 30.

[0046] An annular locking block 56 is sleeved around the outer periphery of the nut 53. The locking block 56 is located at the end of the first end cap 363 away from the first adjustment seat 36. The locking block 56 has a locking block opening 562. Two locking block mounting holes 563 are defined on either side of the inner wall of the locking block opening 563. The two locking block mounting holes 563 extend to the outer periphery of the locking block 56. A second fastener, such as a bolt, is mounted in the two locking block mounting holes 563. The second fastener abuts the outer periphery of the nut 53, thereby locking the locking block 56 and the nut 53 together. When the nut 53 is in the closed position, the second fastener is installed in the two locking block mounting holes 563 so that the second fastener is against the nut 53, so that the locking block 56 and the nut 53 are locked together. At this time, the driving handle 51 is rotated in the clockwise direction. Under the action of the locking member 55, the nut 53 can be driven to rotate clockwise relative to the first end cover 363 and the locking block 56, thereby driving the first upper cutter shaft bearing seat 32 to move left in the first adjustment seat 36 through the nut 53, and then the circular cutter 31 can be driven to move left through the upper cutter shaft 30, thereby achieving the knife-adapting operation. After completion, the second fastener is installed in the two locking block mounting holes 563 so that the second fastener is against the nut 53, so that the locking block 56 and the nut 53 are locked together. At this time, the driving handle 51 is rotated, and the driving handle 51 will not drive the nut 53 to rotate, so that the upper cutter shaft 30 can be locked, so that the upper cutter shaft 30 cannot move along its axial direction, so that the position of the circular cutter 31 can be locked. When the knife needs to be retracted, the driving handle 51 is rotated counterclockwise according to the above steps.

[0047] An arc-shaped plate 3632 is installed at the end of the first end cover 363 away from the first adjustment seat 36. One end of the arc-shaped plate 3632 protrudes from the front side of the first end cover 363 and is vertically provided with a limit member 57. The limit member 57 is located on the same side as the driving handle 51, that is, the limit member 57 and the driving handle 51 are both located in front of the nut 53. The limit member 57 is located above the driving handle 51, and the projections of the limit member 57 and the driving handle 51 on the horizontal plane are cross-shaped. The limit member 57 limits the rotation of the driving handle 51 in the clockwise direction. The driving handles 51 shown in the drawings of the present invention are all in the initial position. When the driving handle 51 is in the initial position, the circular cutter 31 is in the retracted position. When the driving handle 51 is rotated to a position against the limit member 57, the circular cutter 31 is in the contact position.

[0048] An L-shaped mounting bracket 542 is provided at the end of the first blade shaft fixing seat 34 away from the center of the upper blade shaft 30, near the bottom end of the first blade shaft fixing seat 34. The horizontal portion of the mounting bracket 542 is located below the nut 53, and the vertical portion of the mounting bracket 542 is located to the right of the nut 53. A connecting hole is provided at the top of the vertical portion of the mounting bracket 542, and the fixing rod of the first sight 54 is provided through the connecting hole, thereby enabling the first sight 54 to be mounted on the top of the vertical portion of the mounting bracket 542. The probe rod of the first sight 54 is located between the vertical portion of the mounting bracket 542 and the nut 53, and the probe rod of the first sight 54 is connected to the end of the connecting rod 52 away from the first upper blade shaft bearing seat 32. The first sight 54 is, for example, a micrometer. It is understood that the first sight 54 can also be, for example, a dial indicator, a multimeter indicator, etc. As the connecting rod 52 reciprocates along the axial direction of the upper cutter shaft 30, it drives the probe rod of the first sight gauge 54 to move. The dial of the first sight gauge 54 displays the distance traveled by the connecting rod 52. This distance is the same as the distance traveled by the circular cutter 31, and thus the amount of contact and retraction of the circular cutter 31. For example, when the connecting rod 52 moves leftward, it drives the probe rod of the first sight gauge 54 leftward. When the connecting rod 52 moves rightward, it drives the probe rod of the first sight gauge 54 rightward. The first sight gauge 54 measures the distance traveled by the circular cutter 31 and intuitively displays the amount of contact and retraction of the circular cutter 31. This facilitates operation, further ensuring the accuracy of contact and retraction of the circular cutter 31, and further ensuring slitting quality and improving production efficiency. Before using the present invention, it is necessary to check whether the reading of the first sight 54 is zero. If not, it indicates that the driving handle 51 is not in the initial position. At this time, the driving handle 51 can be rotated until the reading of the first sight 54 is zero.

[0049] The second blade shaft fixing seat 35 has a third opening and a fourth opening at one end near the center of the upper blade shaft 30 and at the other end away from the center of the upper blade shaft 30, respectively. The end near the center of the upper blade shaft 30 of the second adjustment seat 35 is located within the third opening and is formed with a second protrusion 372. The second protrusion 372 is located outside the second blade shaft fixing seat 35, and the top of the second protrusion 372 abuts against the end of the second blade shaft fixing seat 35 near the center of the upper blade shaft 30. The end of the second adjustment seat 37 away from the center of the upper blade shaft 30 is provided with a mounting block 373. The end of the mounting block 373 away from the second adjustment seat 37 is located within the fourth opening and is provided with a second end cap 374. The second end cap 374 is located outside the second blade shaft fixing seat 35, and the top of the second end cap 374 abuts against the end of the second blade shaft fixing seat 35 away from the center of the upper blade shaft 30.

[0050] A positioning shaft 375 and a positioning elastic member 376 are provided in the inner cavity of the mounting block 373. One end of the positioning elastic member 376 is connected to the second end cap 374, and the other end of the positioning elastic member 376 is connected to one end of the positioning shaft 375. The other end of the positioning shaft 375 extends out of the mounting block 373 and is connected to the second upper cutter shaft bearing seat 33. The positioning elastic member 376 is preferably a spring. In actual application, when the upper cutter shaft 30 drives the second upper cutter shaft bearing seat 33 to move to the left until the circular cutter 31 is in the cutter-attaching position, the positioning elastic member 376 is compressed. When the upper cutter shaft 30 drives the second upper cutter shaft bearing seat 33 to move to the right until the circular cutter 31 returns to the cutter-retracting position, the positioning elastic member 376 can return to its natural state. The positioning elastic member 376 acts as a buffer to prevent the second upper cutter shaft bearing seat 33 from having a hard collision with the mounting block 373. The second protrusion 372 and the second end cover 374 are respectively used to limit the end of the second adjustment seat 37 close to the center of the upper cutter shaft 30 and the end away from the center of the upper cutter shaft 30, thereby preventing the second adjustment seat 37 from reciprocating along the axial direction of the upper cutter shaft 30.

[0051] In this embodiment, a positioning block 3752 is formed on the outer periphery of one end of the positioning shaft 375 near the positioning elastic member 376. A limiting block 3732 is formed on the inner wall of one end of the inner cavity of the mounting block 373 near the second upper cutter shaft bearing seat 33. The positioning block 3752 is located within the inner cavity and between the limiting block 3732 and the second end cap 374. The positioning block 3752 and the limiting block 3732 abut against each other. In actual use, when the upper cutter shaft 30 moves leftward, the positioning block 3752 and the limiting block 3732 are separated by the second upper cutter shaft bearing seat 33. When the upper cutter shaft 30 returns to its initial position, the positioning block 3752 and the limiting block 3732 abut against each other by the second upper cutter shaft bearing seat 33. The positioning block 3752 and the limiting block 3732 serve to limit the rightward movement of the second upper cutter shaft bearing seat 33.

[0052] The first adjustment assembly 60 and the second adjustment assembly 70 are used to adjust the distance and parallelism between the upper blade shaft 30 and the bottom blade shaft 20 .

[0053] Specific, combined Figure 8 and Figure 9 As shown, the first adjustment assembly 60 includes a second sight 61 , a first lever 62 and a first rolling body 63 .

[0054] A first "I"-shaped hole 342 is defined on the first side of the first blade shaft holder 34 (i.e., the side of the first blade shaft holder 34 that is closest to the bottom blade shaft 20). The first hole 342 communicates with the interior of the first blade shaft holder 34 and extends to the top of the first blade shaft holder 34. A fifth opening is defined on the second side of the first blade shaft holder 34 (i.e., the side of the first blade shaft holder 34 that is away from the bottom blade shaft 20). A first fixed shaft 621 is rotatably disposed within the first hole 342. Specifically, two mounting locations are defined on the left and right inner walls of the first hole 342, with the ends of the first fixed shaft 621 rotatably disposed within the two mounting locations, respectively, via bearings. A second sight gauge 61 is disposed at the top of the first blade shaft holder 34 via a second sight gauge mounting block 612. The second sight gauge 61 is preferably a micrometer indicator, but it can also be, for example, a multimeter indicator or a dial indicator. The first lever 62 is sleeved around the outer periphery of the first fixed shaft 621 and is tilted relative to the first blade shaft fixing seat 34. Specifically, the first lever 62 is tilted relative to the first blade shaft fixing seat 34 toward the bed blade shaft 20. One end of the first lever 62 is located above the first blade shaft fixing seat 34 and is connected to the probe rod of the second sight 61 via the first lever connecting block 613. The other end is located within the first blade shaft fixing seat 34 and is provided with a first rolling element 63. The first rolling element 63 abuts against a first side of the first adjustment seat 36 (i.e., the side of the first adjustment seat 36 that is closest to the bed blade shaft 20). A first connecting plate 65 is provided on the second side of the first blade shaft fixing seat 34. Specifically, the first connecting plate 65 corresponds to the fifth opening of the first blade shaft fixing seat 34. The lower end of the first connecting plate 65 is located below the fifth opening and is hinged to the second side of the first blade shaft fixing seat 34. The upper end of the first connecting plate 65 is located above the fifth opening and has a first threaded hole. A first locking knob 652 is threadedly connected to the first threaded hole. The first locking knob 652 is threadedly connected to the second threaded hole on the second side of the first blade shaft fixing seat 34. The first connecting plate 65 has a third threaded hole. A first adjustment knob 66 ​​is threadedly connected to the third threaded hole. The distal end of the first adjustment knob 66 ​​extends into the first blade shaft fixing seat 34 through the fifth opening of the first blade shaft fixing seat 34 and abuts against the second side of the first adjustment seat 36 (i.e., the side of the first adjustment seat 36 away from the bottom blade shaft 20). The first lever 62 and the first adjusting knob 66 ​​can respectively limit the first side and the second side of the first adjusting seat 36 to prevent the first adjusting seat 36 from moving back and forth in the direction close to or away from the bottom knife shaft 20.

[0055] By adjusting the screw-in amount of the first adjusting knob 66, the distance between the first adjusting seat 36 and the bed cutter shaft 20 can be adjusted. In actual application, if the distance between the first adjusting seat 36 and the bed cutter shaft 20 is to be increased, the screw-in amount of the first adjusting knob 66 ​​is reduced. At this time, under the action of the first fixed shaft 621, the end of the first lever 62 provided with the first rolling element 63 can move forward and the first adjusting seat 36 can be pushed forward by the first rolling element 63 until the end of the first adjusting knob 66 ​​abuts against the second side of the first adjusting seat 36. In this way, the distance between the first adjusting seat 36 and the bed cutter shaft 20 is increased. At the same time, the end of the first lever 62 away from the first rolling element 63 can move backward and drive the probe rod of the second sight gauge 61 to move backward. The dial of the second sight gauge 61 can display the distance moved by the end of the first lever 62 away from the first rolling element 63, which is the distance the first adjusting seat 36 has moved forward. To adjust the distance between the first adjustment seat 36 and the bed cutter shaft 20, the first adjustment knob 66 ​​is screwed in further. As the first adjustment knob 66 ​​is screwed in, the first adjustment knob 66 ​​pushes the first adjustment seat 36 backward. This pushes the first rolling element 63 backward through the first adjustment seat 36. The first fixed shaft 621 then drives the end of the first lever 62, on which the first rolling element 63 is located, to move backward. Simultaneously, the end of the first lever 62, away from the first rolling element 63, moves forward, thereby driving the second probe rod of the second sight gauge 61 forward. This reduces the distance between the first adjustment seat 36 and the bed cutter shaft 20, and the dial on the second sight gauge 61 displays the distance the first adjustment seat 36 has moved backward. The second sight gauge 61 measures the distance the first adjustment seat 36 has moved forward and intuitively displays the amount of movement, making adjustment more convenient. The first rolling body 63 is arranged to abut against the first adjustment seat 36 , so that the friction between one end of the first lever 62 and the first adjustment seat 36 can be reduced, thereby improving the adjustment accuracy.

[0056] In this embodiment, there are two first rolling bodies 63, and both rolling bodies 63 are against the first side of the first adjustment seat 36. Specifically, a first connecting shaft 623 is provided through one end of the first lever 62, and two first rolling bodies 63 are respectively provided at both ends of the first connecting shaft 623. The first lever 62 is located between the two first rolling bodies 63.

[0057] A second rolling body 622 is provided on the first lever 62. The second rolling body 622 is located in the first hole 342 and above the first fixed shaft 621. The first blade shaft fixing seat 34 is provided with a first mounting position connected to the first hole 342. Specifically, the first mounting position is provided through the first side and the second side of the first blade shaft fixing seat 34. A first elastic member 68 is provided in the first mounting position, and the first elastic member 68 is preferably a spring. A first pressure plate 67 is provided on the second side of the first blade shaft fixing seat 34. One end of the first elastic member 68 is connected to the first pressure plate 67, and the other end is provided with a first conduction block 69. The end of the first conduction block 69 away from the first elastic member 68 extends from the first mounting position and is located in the first hole 342. The end of the first conduction block 69 away from the first elastic member 68 is against the second rolling body 622. The first elastic member 68 is in a compressed state. In actual use, when the end of the first lever 62 on which the first rolling element 63 is provided moves forward and the end away from the first rolling element 63 moves backward, the second rolling element 622 can be driven backward by the first lever 62, at which time the first elastic member 68 will be stretched. When the end of the first lever 62 on which the first rolling element 63 is provided moves backward and the end away from the first rolling element 63 moves forward, the second rolling element 622 can be driven forward by the first lever 62, at which time the first elastic member 68 will be compressed. The first elastic member 68 can apply pressure to the second rolling element 622 via the first conductive block 69, thereby applying pressure to the first lever 62, thereby ensuring that the first rolling element 63 is always in contact with the first side of the first adjustment seat 36.

[0058] In this embodiment, there are two second rolling elements 622. Specifically, a second connecting shaft 624 is provided through the first lever 62. Two second rolling elements 622 are respectively mounted on each end of the second connecting shaft 624. The left and right ends of the second connecting shaft 624 do not contact the left and right inner walls of the first hole 342, respectively. The first lever 62 is positioned between the two second rolling elements 622, and the end of the first conductive block 69 that is away from the first elastic member 68 abuts against the two second rolling elements 622.

[0059] Combine Figure 10 and Figure 11 As shown, the second adjustment assembly 70 has the same structure as the first adjustment assembly 60. Specifically, the second adjustment assembly 70 includes a third sight 71, a second lever 72 and a third rolling body 73.

[0060] A second "I"-shaped hole 352 is defined on the first side of the second blade shaft holder 35 (i.e., the side of the second blade shaft holder 35 that is closest to the bottom blade shaft 20). The second hole 352 communicates with the interior of the second blade shaft holder 35 and extends to the top of the second blade shaft holder 35. A sixth opening is defined on the second side of the second blade shaft holder 35 (i.e., the side of the second blade shaft holder 35 that is away from the bottom blade shaft 20). A second fixed shaft 721 is rotatably disposed within the second hole 352. Specifically, two mounting locations are defined on the left and right inner walls of the second hole 352, respectively. The ends of the second fixed shaft 721 are rotatably disposed within the two mounting locations, respectively, via bearings. A third sight gauge 71 is disposed at the top of the second blade shaft holder 35 via a third sight gauge mounting block 712. The third sight gauge 71 is preferably a micrometer indicator, but it can also be, for example, a multimeter indicator or a dial indicator. The second lever 72 is sleeved on the outer circumference of the second fixed shaft 721 and is tilted relative to the second blade shaft fixing seat 35. Specifically, the second lever 72 is tilted relative to the second blade shaft fixing seat 35 toward the bed blade shaft 20. One end of the second lever 72 is located above the second blade shaft fixing seat 35 and is connected to the probe rod of the third sight 71 via the second lever connecting block 713. The other end of the second lever 72 is located within the second blade shaft fixing seat 35 and is provided with a third rolling element 73. The third rolling element 73 abuts against the first side of the second adjustment seat 37 (i.e., the side of the second adjustment seat 37 that is closer to the bed blade shaft 20). A second connecting plate 75 is provided on the second side of the second blade shaft fixing seat 35. Specifically, the second connecting plate 75 corresponds to the sixth opening of the second blade shaft fixing seat 35. The lower end of the second connecting plate 75 is located below the sixth opening and is hinged to the second side of the second blade shaft fixing seat 35. The upper end of the second connecting plate 75 is located above the sixth opening and has a fourth threaded hole. A second locking knob 752 is threadedly connected to the fourth threaded hole. The second locking knob 752 is threadedly connected to the fifth threaded hole on the second side of the second blade shaft fixing seat 35. The second connecting plate 75 has a sixth threaded hole. A second adjustment knob 76 is threadedly connected to the sixth threaded hole. The distal end of the second adjustment knob 76 extends into the second blade shaft fixing seat 35 through the sixth opening of the second blade shaft fixing seat 35 and abuts against the second side of the second adjustment seat 37 (i.e., the side of the second adjustment seat 37 away from the bottom blade shaft 20). The second lever 72 and the second adjusting knob 76 can limit the first side and the second side of the second adjusting seat 37 respectively, so as to prevent the second adjusting seat 37 from moving back and forth in the direction close to or away from the bottom knife shaft 20, that is, in the front-back direction.

[0061] By adjusting the screw-in amount of the second adjusting knob 37, the distance between the second adjusting seat 37 and the bed cutter shaft 20 can be adjusted. In actual application, if the distance between the second adjusting seat 37 and the bed cutter shaft is to be increased, the screw-in amount of the second adjusting knob 37 is reduced. At this time, under the action of the second fixed shaft 721, the end of the second lever 72 provided with the third rolling element 723 can move forward and push the second adjusting seat 37 forward through the third rolling element 73 until the end of the second adjusting knob 76 abuts against the second side of the second adjusting seat 37. In this way, the distance between the second adjusting seat 37 and the bed cutter shaft 20 is increased. At the same time, the end of the second lever 72 away from the third rolling element 73 can move backward and drive the probe rod of the third sight gauge 71 to move backward. The dial of the third sight gauge 71 can display the distance moved by the end of the second lever 72 away from the third rolling element 73, which is the distance the second adjusting seat 37 has moved forward. To adjust the distance between the second adjustment seat 37 and the bed cutter shaft 20, the second adjustment knob 76 is screwed in further. As the second adjustment knob 76 is screwed in, it pushes the second adjustment seat 37 backward. This, in turn, pushes the third rolling element 73 backward through the second adjustment seat 37. Under the action of the second fixed shaft 721, this drives the end of the second lever 72, where the third rolling element 73 is located, to move backward. Simultaneously, the end of the second lever 72, away from the third rolling element 73, moves forward, thereby driving the second probe rod of the third sight gauge 71 forward. This reduces the distance between the second adjustment seat 37 and the bed cutter shaft 20, and the third sight gauge 71 measures the distance the second adjustment seat 37 has moved backward. The third sight gauge 71 measures the distance the second adjustment seat 37 has moved, visually displaying the amount of movement. The third rolling element 73 counteracts the second adjustment seat 37, reducing friction between the end of the second lever 72 and the second adjustment seat 37, thereby improving adjustment accuracy.

[0062] By adjusting the distance between the first adjustment seat 37 and the bottom cutter shaft 20, and the distance between the second adjustment seat 36 and the bottom cutter shaft 20, the distance between the upper cutter shaft 30 and the bottom cutter shaft 20 can be adjusted. Furthermore, the distance between the blade of the circular cutter 31 and the bottom cutter shaft 20 can be adjusted to accommodate diaphragms of varying thicknesses. Simultaneously, by adjusting the distance between the first adjustment seat 37 and the bottom cutter shaft 20, and the distance between the second adjustment seat 36 and the bottom cutter shaft 20, the parallelism between the upper cutter shaft 30 and the bottom cutter shaft 20 can be adjusted, ensuring that the upper cutter shaft 30 and the bottom cutter shaft 20 are parallel.

[0063] In this embodiment, there are two third rolling bodies 73, and both third rolling bodies 73 are against the first side of the second adjustment seat 37. Specifically, a third connecting shaft 723 is provided through one end of the second lever 72, and two third rolling bodies 73 are respectively provided at both ends of the second connecting shaft 723. The second lever 72 is located between the two third rolling bodies 73.

[0064] A fourth rolling body 722 is provided on the second lever 72. The fourth rolling body 722 is located in the second hole 352 and above the second fixed shaft 721. The second blade shaft fixing seat 35 is provided with a second mounting position connected to the second hole 352. Specifically, the second mounting position is provided through the first side and the second side of the second blade shaft fixing seat 35. A second elastic member 78 is provided in the second mounting position. The second elastic member 78 is preferably a spring. A second pressure plate 77 is provided on the second side of the second blade shaft fixing seat 35. One end of the second elastic member 78 is connected to the second pressure plate 77, and the other end is provided with a second conduction block 79. The end of the second conduction block 79 away from the second elastic member 78 extends from the second mounting position and is located in the second hole 352. The end of the second conduction block 79 away from the second elastic member 78 abuts against the fourth rolling body 722. The second elastic member 78 is in a compressed state. In actual use, when the end of the second lever 72 on which the third rolling element 73 is provided moves forward and the end away from the third rolling element 73 moves backward, the fourth rolling element 722 can be driven backward by the second lever 72, at which time the second elastic member 78 will be stretched. When the end of the second lever 72 on which the third rolling element 73 is provided moves backward and the end away from the third rolling element 73 moves forward, the fourth rolling element 722 can be driven forward by the second lever 72, at which time the second elastic member 78 will be compressed. The second elastic member 78 can apply pressure to the fourth rolling element 722 via the second conductive block 79, thereby applying pressure to the second lever 72, thereby ensuring that the third rolling element 73 is always in contact with the first side of the second adjustment seat 37.

[0065] In this embodiment, there are two fourth rolling elements 722. Specifically, a fourth connecting shaft 724 is provided through the second lever 72. The left and right ends of the fourth connecting shaft 724 do not contact the left and right inner walls of the second hole 352. Two fourth rolling elements 722 are respectively sleeved on each end of the fourth connecting shaft 724. The second lever 72 is positioned between the two fourth rolling elements 722. The end of the second conductive block 79 away from the second elastic member 78 abuts against the two fourth rolling elements 722.

[0066] In this embodiment, the first rolling element 63, the second rolling element 622, the third rolling element 73 and the fourth rolling element 722 are all deep groove ball bearings. It can be understood that the first rolling element 63, the second rolling element 622, the third rolling element 73 and the fourth rolling element 722 can also be, for example, rollers.

[0067] The present invention also provides a slitting machine, comprising the above-mentioned sticking and withdrawing mechanism.

[0068] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A sticking and retracting mechanism, characterized in that: It includes two mounting seats arranged opposite to each other, a bottom cutter shaft, an upper cutter shaft and a driving assembly; The two ends of the bed cutter shaft are rotatably arranged on the two mounting seats through two bed cutter shaft bearing seats respectively, and the outer periphery of the bed cutter shaft is sleeved with a circular bed cutter; The upper cutter shaft is arranged in parallel with the bottom cutter shaft, a circular cutter is sleeved on the outer circumference of the upper cutter shaft, the blade of the circular cutter is close to the bottom cutter shaft, the circular cutter and the circular bottom cutter are spaced apart along the axial direction of the bottom cutter shaft and the upper cutter shaft, and the two ends of the upper cutter shaft are rotatably arranged in the first cutter shaft fixing seat and the second cutter shaft fixing seat through the first upper cutter shaft bearing seat and the second upper cutter shaft bearing seat respectively, and the first cutter shaft fixing seat and the second cutter shaft fixing seat are respectively arranged on the two mounting seats; The driving assembly is connected to the first upper cutter shaft bearing seat, and the driving assembly is used to drive the first upper cutter shaft bearing seat to reciprocate along the axial direction of the upper cutter shaft in the first cutter shaft fixing seat, thereby driving the upper cutter shaft to reciprocate along its axial direction, and further driving the second upper cutter shaft bearing seat to reciprocate along the axial direction of the upper cutter shaft in the second cutter shaft fixing seat, and driving the circular cutter to reciprocate along the axial direction of the upper cutter shaft to make the circular cutter approach or move away from the circular bottom cutter; A first adjustment seat is provided in the first cutter shaft fixing seat, a second adjustment seat is provided in the second cutter shaft fixing seat, the first upper cutter shaft bearing seat is provided in the first adjustment seat, the second upper cutter shaft bearing seat is provided in the second adjustment seat, the first upper cutter shaft bearing seat can reciprocate along the axial direction of the upper cutter shaft in the first adjustment seat, and the second upper cutter shaft bearing seat can reciprocate along the axial direction of the upper cutter shaft in the second adjustment seat; The drive assembly includes a driving handle, a connecting rod and a nut, wherein the connecting rod is provided at one end of the first upper cutter shaft bearing seat away from the center of the upper cutter shaft, and the end of the connecting rod away from the first upper cutter shaft bearing seat passes through the through hole of the first adjustment seat and extends out of the first cutter shaft fixing seat. The nut is located outside the first cutter shaft fixing seat and sleeved on the outer periphery of the connecting rod, and the nut is threadably matched with the external thread provided on the outer peripheral surface of the connecting rod. The driving handle is located on one side of the nut, and the connecting end of the driving handle is connected to the nut. By rotating the driving handle, the nut can be driven to rotate, and the rotation of the nut can drive the connecting rod to reciprocate along the axial direction of the upper cutter shaft, thereby driving the first upper cutter shaft bearing seat to reciprocate along the axial direction of the upper cutter shaft; The end of the second adjustment seat away from the center of the upper cutter shaft is provided with a mounting block, and the end of the mounting block away from the second adjustment seat is provided with a second end cover, the second end cover is located outside the second cutter shaft fixing seat and the top of the second end cover is against the end of the second cutter shaft fixing seat away from the center of the upper cutter shaft; a positioning shaft and a positioning elastic member are provided in the inner cavity of the mounting block, one end of the positioning elastic member is connected to the second end cover, the other end of the positioning elastic member is connected to one end of the positioning shaft, and the other end of the positioning shaft extends out of the mounting block and is connected to the second upper cutter shaft bearing seat; a positioning block is formed on the outer periphery of the positioning shaft, and a limiting block is formed on the inner wall of the inner cavity of the mounting block, the positioning block is located in the inner cavity and between the limiting block and the second end cover, and the positioning block is against the limiting block.

2. The knife sticking and retracting mechanism according to claim 1, characterized in that: A locking piece is provided on the outer periphery of the nut, and the locking piece has a locking piece opening. Two locking piece mounting holes are provided on the inner walls on both sides of the locking piece opening, respectively. The two locking piece mounting holes extend to the outer periphery of the locking piece, respectively. A first fastener is installed in the two locking piece mounting holes, and the first fastener abuts against the outer periphery of the nut. The connecting end of the driving handle is connected to the locking piece.

3. The knife sticking and retracting mechanism according to claim 1, characterized in that: A mounting bracket is provided at one end of the first tool shaft fixing seat away from the center of the upper tool shaft, and a first sight is installed on the mounting bracket. The probe rod of the first sight is connected to the end of the connecting rod away from the first upper tool shaft bearing seat.

4. The knife sticking and retracting mechanism according to claim 1, characterized in that: A first end cover is provided at the end of the first adjustment seat away from the center of the upper cutter shaft, the first end cover is located outside the first cutter shaft fixing seat and the top end of the first end cover is against the end of the first cutter shaft fixing seat away from the center of the upper cutter shaft, the first end cover is sleeved on the outer periphery of the end of the nut close to the first upper cutter shaft bearing seat, the nut can rotate relative to the first end cover, and a limiting member is vertically provided at the end of the first end cover away from the first adjustment seat, and the limiting member is located on the same side as the driving handle and above the driving handle.

5. The knife sticking and retracting mechanism according to claim 4, characterized in that: A locking block is provided on the outer periphery of the nut, and the locking block is arranged at an end of the first end cover away from the first adjustment seat. The locking block has a locking block opening, and two locking block mounting holes are respectively provided on the inner walls on both sides of the locking block opening. The two locking block mounting holes extend to the outer periphery of the locking block respectively, and second fasteners are installed in the two locking block mounting holes, and the second fasteners abut against the outer periphery of the nut.

6. The knife-sticking and retracting mechanism according to claim 1, characterized in that: It also includes a first adjustment component and a second adjustment component for adjusting the distance and parallelism between the upper knife shaft and the bottom knife shaft.

7. The knife sticking and retracting mechanism according to claim 6, characterized in that: The first adjusting component includes a second sight, a first lever and a first rolling body, a first hole is provided on the first side of the first tool shaft fixing seat, the first hole is connected to the interior of the first tool shaft fixing seat and the first hole extends to the top of the first tool shaft fixing seat, the first fixed shaft is rotatably provided in the first hole, the second sight is set at the top of the first tool shaft fixing seat, the first lever is sleeved on the outer circumference of the first fixed shaft and is inclined relative to the first tool shaft fixing seat, one end of the first lever is located above the first tool shaft fixing seat and connected to the probe rod of the second sight, the other end is located in the first tool shaft fixing seat and is provided with a first rolling body, the first rolling body is against the first side of the first adjusting seat, and a first connecting plate is provided on the second side of the first tool shaft fixing seat, the first connecting plate is threadedly connected to the first adjusting knob, and the end of the first adjusting knob extends into the first tool shaft fixing seat and is against the second side of the first adjusting seat.

8. The knife sticking and retracting mechanism according to claim 7, characterized in that: A second rolling body is provided on the first lever, and the second rolling body is located in the first hole and above the first fixed shaft. The first knife shaft fixing seat is provided with a first mounting position connected to the first hole, and a first elastic member is provided in the first mounting position. A first pressure plate is provided on the second side of the first knife shaft fixing seat, one end of the first elastic member is connected to the first pressure plate, and the other end is provided with a first conduction block, an end of the first conduction block away from the first elastic member extends from the first mounting position and is located in the first hole, an end of the first conduction block away from the first elastic member is against the second rolling body, and the first elastic member is in a compressed state.

9. The knife sticking and retracting mechanism according to claim 6, characterized in that: The second adjusting assembly includes a third sight, a second lever and a third rolling body, a first side of the second tool shaft fixing seat is provided with a second hole, the second hole is connected to the interior of the second tool shaft fixing seat and the second hole extends to the top of the second tool shaft fixing seat, and the second fixed shaft is rotatably provided in the second hole, the third sight is set at the top of the second tool shaft fixing seat, the second lever is sleeved on the outer circumference of the second fixed shaft and is inclined relative to the second tool shaft fixing seat, one end of the second lever is located above the second tool shaft fixing seat and connected to the probe rod of the third sight, the other end is located in the second tool shaft fixing seat and is provided with a third rolling body, the third rolling body is against the first side of the second adjusting seat, and a second connecting plate is provided on the second side of the second tool shaft fixing seat, and a second adjusting knob is threadedly installed on the second connecting plate, and the end of the second adjusting knob extends into the second tool shaft fixing seat and against the second side of the second adjusting seat.

10. The knife sticking and retracting mechanism according to claim 9, characterized in that: A fourth rolling body is provided on the second lever, and the fourth rolling body is located in the second hole and above the second fixed shaft. The second knife shaft fixing seat is provided with a second mounting position connected to the second hole, and a second elastic member is provided in the second mounting position. A second pressure plate is provided on the second side of the second knife shaft fixing seat, one end of the second elastic member is connected to the second pressure plate, and the other end is provided with a second conduction block, an end of the second conduction block away from the second elastic member extends from the second mounting position and is located in the second hole, an end of the second conduction block away from the second elastic member is against the fourth rolling body, and the second elastic member is in a compressed state.

11. A slitting machine, characterized in that: It comprises the knife-sticking and withdrawing mechanism as described in any one of claims 1 to 10.

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