Rewinding machine cutting device, control system and rewinding machine

Abstract

The present invention discloses a rewinder cutting device, a control system and a rewinder, which belongs to the technical field of rewinders. The rewinder cutting device comprises two parallel feed guide rails, a transverse connecting plate, a driving mechanism and a plurality of knife seats. A blade is rotatably mounted on the knife seat, and the blade is connected with a clamping part. A limiting device is also provided on the knife seat. The clamping part is clamped with the limiting device to keep the blade in the extended position, and the clamping part is separated from the limiting device to rotate the blade to the retracted position. Compared with the prior art, the rewinder cutting device of the present invention can adjust the number of cutting sections of the coil by placing the blade in the extended position or the retracted position, and the knife seat can be moved on the transverse connecting plate to adjust the cutting size, which can meet the different needs of customers and is easy to operate. The rewinder cutting device of the present invention also includes an identification mechanism to identify the knife seat by number, so that the specified knife seat can be accurately shifted.

Description

Technical Field

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

[0002] The rewinder cuts the processed paper products, films, cloth rolls, etc. into different specifications or sizes according to different needs of customers. Chinese utility model patent CN201520955132X discloses "a slitting and rewinding machine", the cutting device of which includes a cutter and a cutter frame, the cutter frame is parallel to the clamped paper tube, the cutters are distributed along the axial direction of the cutter frame, the number of cutters is multiple, and the cutter feeding mechanism includes a pair of feeding cylinders, the push rod of each feeding cylinder is fixed to one end of the cutter frame, when the roll needs to be cut, the feeding cylinder pushes the cutter frame to make the cutter contact with the roll to cut the roll, and the cutter frame withdraws after the cutting is completed.

[0003] Generally, the cutters are fixed on the cutter frame. If the number of sections to be cut needs to be adjusted, the unnecessary cutters must be removed or the number of cutters must be increased, and the positions of the cutters must be rearranged. Summary of the invention

[0004] The purpose of the present invention is to overcome the problem of inconvenient adjustment of the number of cutting sections in the prior art, and to provide a rewinder cutting device, a control system and a rewinder capable of switching the retractable position of a blade.

[0005] The cutting device of the rewinding machine of the present invention comprises two parallel feed guide rails, a transverse connecting plate, a driving mechanism and a plurality of knife seats, wherein the driving mechanism drives the transverse connecting plate to move on the feed guide rail, the knife seat is mounted on the transverse connecting plate, a blade is rotatably mounted on the knife seat, the blade is connected with a clamping part, and a limiting device is also arranged on the knife seat, the clamping part is clamped with the limiting device to keep the blade in the extended position, and the clamping part is separated from the limiting device to rotate the blade to the retracted position. When the number of cutting sections of the coil needs to be adjusted, it is only necessary to rotate the unnecessary blade to the retracted position, or rotate the blade with the increased number of sections to the extended position, which can meet the different needs of customers and is easy to operate.

[0006] Furthermore, a column is provided on the knife seat, and a knife disc is rotatably mounted on the side of the column through a knife disc rotating shaft, the blade is mounted on the front end of the knife disc, and the engaging portion is a convex block protruding backward on the knife disc. The limiting device includes a swing rod, one end of which is rotatably mounted on the column, and a clamping column is provided on the side of the other end. A spring is installed between the swing rod and the knife seat, and the spring prompts the swing rod to rotate upward until the upper surface of the swing rod abuts against the limiting convex block on the column; the engaging portion engages or disengages with the clamping column, so that the knife disc is kept in the extended or retracted position. The retractable knife position is switched by engaging or disengaging the convex block with the swingable clamping column, and the structure is simple, the design is reasonable, and automatic control is easy to achieve.

[0007] Furthermore, it also includes a knife retracting mechanism, which includes a knife retracting cylinder and a first push block, wherein the mounting end of the first push block is mounted on the piston rod of the knife retracting cylinder; when the blade is in the knife extending position, the knife retracting cylinder pushes the first push block to press down the swing rod, so that the clamping column is separated from the clamping part. The free end of the first push block is provided with a lower inclined surface, and the knife retracting cylinder pushes the first push block to move horizontally, and the lower inclined surface of the first push block contacts and presses down the swing rod. The knife retracting mechanism can realize automatic switching of the telescopic position of the blade, thereby improving the cutting efficiency.

[0008] Furthermore, it also includes a knife extension mechanism, which includes a knife extension cylinder and a second push block installed on the piston rod of the knife extension cylinder. When the blade is in the knife retracting position, the second push block causes the knife disc to rotate under the push of the knife extension cylinder until the engaging portion engages with the limit device. A knife extension roller is provided below the knife disc rotating shaft. The knife extension cylinder pushes the second push block to contact and push the knife extension roller to rotate the knife disc until the engaging portion engages with the limit device. The knife extension mechanism can realize automatic switching of the retractable position of the blade, thereby improving cutting efficiency.

[0009] Furthermore, it also includes a guide rail parallel to the transverse connecting plate, on which a transverse moving seat that can move along the guide rail is installed, and the knife-retracting cylinder and / or knife-extending cylinder are installed on the transverse moving seat. The transverse moving seat drives the knife-retracting cylinder and the knife-extending cylinder to move, and can conveniently switch the telescopic position of the corresponding blade. The same transverse moving seat is used to install the knife-extending and knife-retracting cylinders, which is convenient for control. If two different moving seats are used to install the knife-extending and knife-retracting cylinders, although it is feasible, it will make the control complicated.

[0010] Furthermore, a transverse guide rail parallel to the guide rail is provided on the transverse connecting plate, a tool holder slide block is provided at the bottom of the tool holder, and the tool holder is movably mounted on the transverse guide rail through the tool holder slide block; a tool shifting groove is provided on the tool holder, a tool shifting clamping portion is provided on the first push block, and the tool shrinking cylinder pushes the tool shifting clamping portion of the first push block into the tool shifting groove. The tool shrinking cylinder also has a tool shifting function, and is engaged or separated with the tool holder by the extension and retraction of the tool shrinking cylinder, and has a simple structure and high reliability.

[0011] Furthermore, it also includes an identification mechanism, which includes a sensing sheet installed on the tool holder and a sensor installed on the lateral moving seat. The identification mechanism can identify the tool holder by number, so as to accurately shift the designated tool holder.

[0012] Furthermore, it also includes a reset device, when the engaging portion is separated from the limiting device, the reset device prompts the cutter disc to rotate to the retracted position. The reset device is a torsion spring, which is sleeved on the cutter disc rotating shaft, one end of the torsion spring is connected to the column, and the other end is connected to the limit block on the cutter disc, when the cutter disc drives the blade to rotate until the limit block and the top of the column abut against each other, the blade is in the retracted position. The torsion spring is small and durable, and easy to install, suitable for being inserted into the rotating shaft, and can quickly reset the blade to the retracted position.

[0013] The invention also describes a rewinding machine, which is provided with the rewinding machine cutting device.

[0014] The present invention also describes a control system for a cutting device of a rewinding machine, comprising a connecting plate driving mechanism for pushing a transverse connecting plate to move along a knife feed guide rail; a knife extending cylinder for pushing a clamping portion to engage with a limiting device to keep a blade in a knife extending position; a knife retracting cylinder for triggering the separation of the clamping portion from the limiting device to rotate the blade to a knife retracting position; a servo motor for driving the knife extending cylinder, the knife retracting cylinder and a sensor to move; a sensor for identifying a knife seat on the transverse connecting plate; a counter for numbering the knife seat identified by the sensor; a memory for storing data; and a touch screen for entering position parameters of the knife seat.

[0015] And a controller, which controls the start and stop of the connecting plate driving mechanism and the servo motor, controls the extension and retraction of the knife extending cylinder and the knife retracting cylinder, controls the counter to number the knife holder according to the trigger signal uploaded by the sensor, receives the position parameters entered by the touch screen, and saves the position data of the knife holder and the extension and retraction status of the blade to the memory.

[0016] The rewinder cutting device of the present invention can adjust the number of cutting sections of the coiled material according to actual needs by placing the blade in the extended blade position or the retracted blade position, and the blade holder can be moved on the transverse connecting plate to adjust the cutting size, which can meet the different needs of customers and is easy to operate. The rewinder cutting device of the present invention also includes an identification mechanism to identify the blade holder by number, so that the designated blade holder can be accurately shifted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a cutting device of a rewinding machine according to Embodiment 1;

[0018] Figure 2 for Figure 1 Right view of;

[0019] Figure 3 The structure of the knife holder in the first embodiment is shown in FIG. Figure 1 ;

[0020] Figure 4 for Figure 3 Exploded diagram of

[0021] Figure 5 The structure of the knife holder in the first embodiment is shown in FIG. Figure 2 ;

[0022] Figure 6 for Figure 5 Exploded diagram of

[0023] Figure 7 The knife holder of the first embodiment is in the retracted state Figure 1 ;

[0024] Figure 8 The knife holder of the first embodiment is in the retracted state Figure 2 ;

[0025] Fig. 9 The structure of the knife holder and the lateral moving holder in the first embodiment is shown in FIG. Figure 1 ;

[0026] Fig.10 The structure of the knife holder and the lateral moving holder in the first embodiment is shown in FIG. Figure 2 ;

[0027] Fig.11 Schematic diagram of the knife retracting action in Example 1 Figure 1 ;

[0028] Fig.12 Schematic diagram of the knife retracting action in Example 1 Figure 2 ;

[0029] Fig.13 Schematic diagram of the knife extension action in Example 1 Figure 1 ;

[0030] Fig.14 Schematic diagram of the knife extension action in Example 1 Figure 2 ;

[0031] Fig.15 This is a structural diagram of a control system of a cutting device of a rewinding machine according to Embodiment 1;

[0032] Fig.16 This is a schematic structural diagram of a cutting device of a rewinding machine according to Embodiment 2;

[0033] Fig.17 This is a schematic diagram of the structure of the knife holder of the second embodiment;

[0034] Fig.18 An exploded view of the tool holder of the second embodiment;

[0035] Fig.19 The structure diagram of the transverse moving seat and the knife seat in the second embodiment Figure 1 ;

[0036] Fig. 20 The structure diagram of the transverse moving seat and the knife seat in the second embodiment Figure 2 ;

[0037] Fig.21 This is a structural diagram of the control system of the cutting device of the rewinding machine in Example 2.

[0038] Reference numerals: 1. base, 2. feed guide rail, 3. transverse connecting plate, 4. feed slider, 5. connecting plate driving mechanism, 6. transverse guide rail, 7. knife seat, 7.1. knife shift groove, 8. blade, 9. knife seat slider, 10. column, 10.1. limit convex block, 11. knife disc rotating shaft, 12. knife disc, 12.1. clamping part, 13. torsion spring, 14. limit block, 15. swing rod, 16. clamping column, 17. spring, 18. Guide rail, 19. Lateral moving seat, 20. Servo motor, 21. Cylinder for retracting the knife, 22. Roller for retracting the knife, 23. Cylinder for extending the knife, 24. Second push block, 25. Roller for extending the knife, 26. Induction sheet, 27. Sensor, 28. First push block, 28.1. Lower inclined surface, 28.2. Knife moving clamping part, 29. Rack, 30. Lock block, 31. Elastic part, 32. Unlocking roller, 33. Rotating shaft, 34. T-type bushing. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with the embodiments and the accompanying drawings.

[0040] Embodiment 1:

[0041] exist Figure 1 and Figure 2In the illustrated embodiment 1, the rewinding machine cutting device of the present invention comprises a base 1 and a transverse connecting plate 3. Two parallel feed guide rails 2 are installed on the base 1, the transverse connecting plate 3 is perpendicular to the feed guide rails 2, and feed sliders 4 are installed at both ends of the transverse connecting plate 3, and the feed sliders 4 match the feed guide rails 2, so that the transverse connecting plate 3 can move on and along the feed guide rails 2. In this embodiment, the number of feed guide rails 2 is two, and if the length of the transverse connecting plate 3 is increased, more feed guide rails 2 can also be set; in this embodiment, there are two feed guide rails 2, and two bases are correspondingly set. In other embodiments of the present invention, the feed slider 4 and the feed guide rail 2 can be replaced by a guide shaft and a sliding sleeve, and its function is to guide the transverse connecting plate 3 to move on the feed guide rail 2, and the specific structural form is diverse. Two connecting plate driving mechanisms 5 are also installed on the base 1, and the driving shaft of the connecting plate driving mechanism 5 is connected to the feed slider 4, and the connecting plate driving mechanism 5 drives the transverse connecting plate 3 to move along the feed guide rail 2. The connecting plate driving mechanism 5 in this embodiment is a cylinder, and the piston rod of the cylinder is connected to the feed slider 4. A transverse guide rail 6 is installed on the transverse connecting plate 3, and a plurality of knife seats 7 that can move along the transverse guide rail 6 are installed on the transverse guide rail 6, and a blade 8 is installed on the knife seat 7. Specifically, a knife seat slider 9 is installed below the knife seat 7, and the knife seat 7 is movably installed on the transverse guide rail 6 through the knife seat slider 9. When the cutting size changes, the distance between the blades can be adjusted by moving the knife seat 7 to meet the requirements of different cutting sizes. In other embodiments of the present invention, the sliding connection between the knife seat 7 and the transverse connecting plate 3 can be achieved by rollers and slide grooves or other structural forms.

[0042] The blade 8 is rotatably mounted on the blade holder 7. Specifically, Figure 3 , 4As shown in Figures 5, 6, 7 and 8, a column 10 is provided on the knife seat 7, a knife disc 12 is rotatably mounted on the column 10 via a knife disc rotating shaft 11, and a blade 8 is mounted on the knife disc 12. A torsion spring 13 is sleeved on the knife disc rotating shaft 11, one end of the torsion spring 13 is connected to the column 10, and the other end is connected to a limit block 14 fixed to the knife disc 12. The torsion spring 13 prompts the knife disc 12 to drive the blade 8 to rotate toward the retracted position until the limit block 14 abuts against the top of the column 10. The function of the torsion spring 13 in this embodiment is to quickly reset the blade 8 to the retracted position, and other resetting devices can also be used in addition to the torsion spring. In other embodiments of the present invention, the blade 8 can also rotate to the retracted position under the action of gravity. A swing lever 15 is rotatably mounted on the column 10, and a clamping column 16 is mounted on the swing lever 15. A spring 17 is mounted between the swing lever 15 and the knife seat 7. The spring 17 forces the swing lever 15 to rotate upward until the upper surface of the swing lever 15 abuts against the upper limit projection 10.1 of the column 10. A clamping portion 12.1 is mounted on the knife disc 12. The knife disc 12 is rotated in the opposite direction to overcome the force of the torsion spring 13, so that the clamping portion 12.1 is clamped with the clamping column 16, so that the knife disc 12 is kept in the extended position. Figure 3 The engagement shown in the figure is a mode in which the end of the engaging portion 12.1 is against the engaging column 16. External force presses the swing lever 15 downward, and when the engaging column 16 is separated from the engaging portion 12.1, the cutter disc 12 rotates to the retracted position by the elastic force of the torsion spring 13. The pressure on the swing lever 15 is cancelled, and the swing lever 15 is reset by the elastic force of the spring 17. Therefore, when it is necessary to adjust the number of cutting sections of the coil, it is only necessary to turn the unnecessary blade 8 to the retracted position, or turn the blade 8 with the increased number of sections to the extended position. The blade can be extended or retracted according to the actual number of cutting sections required, and the blade holder 7 can be moved by the transverse guide rail 6 to adjust the cutting size (i.e., the distance between the two blades), which can meet the different needs of customers and is easy to operate.

[0043] In this embodiment, the cutting device of the rewinding machine also includes a knife shrinking mechanism, such as Figure 1 As shown, the knife retracting mechanism includes a guide rail 18 arranged parallel to the transverse guide rail 6, and a transverse moving seat 19 is provided on the guide rail 18 and can move back and forth along the guide rail 18. The transverse moving seat 19 is driven by a servo motor 20 through a synchronous belt, and the start and stop of the servo motor 20 is controlled by a controller. Fig. 9 and Fig.10 As shown, a knife-retracting cylinder 21 is installed on the transverse moving seat 19, and a first push block 28 is installed on the piston rod of the knife-retracting cylinder 21. The extension and retraction of the knife-retracting cylinder 21 is controlled by a controller. A lower inclined surface 28.1 is provided at the end of the first push block 28, and a knife-retracting roller 22 is installed on the swing rod 15. Fig.11 , 12As shown, when the cutter disc 12 is in the extended position, the cutter retracting cylinder 21 extends, and the lower inclined surface 28.1 of the first push block 28 contacts the cutter retracting roller 22. Since the first push block 28 has a lower inclined surface, the horizontal thrust of the cutter retracting cylinder 21 can be converted into downward pressure. The first push block 28 presses down the swing rod 15, so that the clamping column 16 is separated from the clamping portion 12.1 of the cutter disc 12, and the cutter disc 12 rotates to the retracted position under the action of the torsion spring 13. The cutter retracting cylinder 21 retracts, and the swing rod 15 is reset under the action of the spring 17. In other embodiments of the present invention, the cutter retracting cylinder 21 can also extend vertically downward to push the first push block 28 to press down the swing rod 15. Compared with the structure using the first push block with a lower inclined surface, the overall setting of this structure is more complicated.

[0044] like Fig. 9 , 11 As shown, the knife-retracting cylinder 21 is also a knife-moving cylinder, and a knife-moving groove 7.1 is provided on the knife seat 7, and a knife-moving clamping portion 28.2 is provided on the first push block 28. When the knife-retracting cylinder 21 is extended, the knife-moving clamping portion 28.2 of the first push block 28 is clamped into the knife-moving groove 7.1 of the knife seat 7, and when the servo motor 20 drives the lateral moving seat 19 to move, the knife seat 7 can be driven to move. The servo motor 20 can accurately locate the moving position of the knife seat 7 through the encoder, and can move the knife seat 7 to a position manually set by the touch screen or a position obtained by calculation. The controller stores the position of each knife seat 7 in the memory.

[0045] In this embodiment, the cutting device of the rewinding machine further includes a knife extending mechanism, such as Fig. 9 and Fig.10 As shown, it includes a knife extension cylinder 23 installed on the transverse moving seat 19, the extension and retraction of the knife extension cylinder 23 is controlled by a controller, a second push block 24 is installed on the piston rod of the knife extension cylinder 23, and a knife extension roller 25 is provided on the knife disc 12, and the knife extension roller 25 is located below the knife disc rotating shaft 11. Fig.13 , 14 As shown, when the cutter disc 12 is in the retracted position, the cutter extension cylinder 23 is pushed out, and the end of the second push block 24 abuts against the cutter extension roller 25, pushing the cutter disc 12 to rotate to overcome the force of the torsion spring until the engaging portion 12.1 of the cutter disc 12 engages with the engaging column 16 on the swing rod 15, so that the blade on the cutter disc 12 remains in the extended state.

[0046] In this embodiment, the rewinding machine cutting device also includes an identification mechanism, such as Fig. 9 and Fig.10As shown, it includes a sensing sheet 26 installed on the knife seat 7 and a sensor 27 installed on the lateral moving seat 19. The sensor 27 is connected to the controller. When the lateral moving seat 19 is moved, when the sensor 27 senses the sensing sheet 26, a trigger signal is uploaded to the controller, and the controller controls the counter to add or subtract one, thereby numbering and identifying the knife seat 7. Generally, one of the knife seats at both ends is set as the number one knife seat.

[0047] like Fig.15 As shown, the control system of this embodiment includes a connecting plate driving mechanism 5, a knife extending cylinder 23, a knife retracting cylinder 21, a servo motor 20, a sensor 27, a counter, a memory, a touch screen and a controller. The working principle of the control system is as follows:

[0048] 1. When working, input the required width of the cut segmented roll material on the touch screen, and the controller will calculate the actual number of blades required and the positions of all blade seats;

[0049] 2. The controller sends a start signal, the servo motor 20 drives the lateral moving seat 19 and the sensor 27 to move along the guide rail 18, the sensor 27 transmits the identification signal of the sensing sheet 26 to the controller, the controller controls the counter to identify each knife seat by number, and the controller saves the position data of the knife seat and the extension and retraction state of the blade to the memory;

[0050] 3. According to the position of each knife seat and the retractable state of the blade, the controller controls the servo motor 20, the knife retracting cylinder 21 and the knife extending cylinder 23 to shift each knife seat and place the blade in the extended position or the retracted position;

[0051] 4. The controller controls the connecting plate driving mechanism 5 to push the entire row of knife seats on the transverse connecting plate 3 to cut the coil along the knife feed guide rail 2;

[0052] 5. The controller controls the connecting plate driving mechanism 5 to push the knife holder to reset.

[0053] Embodiment 2:

[0054] In this embodiment, the cutting device of the rewinding machine further includes a knife seat locking device, which is installed on each knife seat 7 and includes: Fig.16 The rack 29 shown in FIG. 1 is arranged parallel to the transverse guide rail 6, and the rack 29 shown in FIG. Fig.17 The locking block 30 shown is engaged with the rack 29. Figure 17-20 As shown, the locking block 30 is rotatably mounted on the knife seat 7, and an elastic member 31 is installed between the knife seat 7 and the locking block 30, and the elastic member 31 causes the lower end of the locking block 30 to engage with the rack 29. An unlocking roller 32 is provided at the upper end of the locking block 30, and the unlocking roller 32 is located above the knife moving groove 7.1.

[0055] When the knife holder 7 needs to be moved, the knife holder 7 needs to be unlocked first. When the knife shrinking cylinder 21 drives the first push block 28 to snap into the knife shifting groove 7.1 of the knife holder 7, the knife shifting clamping portion 28.2 of the first push block 28 pushes the unlocking roller 32, so that the locking block 30 overcomes the elastic force of the elastic member 31, so that the lower end of the locking block 30 is separated from the rack 29, and then the knife holder 7 is driven to move to the specified position through the movement of the lateral moving seat 19; the knife shrinking cylinder 21 contracts, the first push block 28 is separated from the unlocking roller 32 and moves out of the knife shifting groove 7.1. The locking block 30 re-engages with the rack 29 by the action of the elastic member 31, so that the knife holder 7 is locked in the specified position, and there will be no left-right deviation, thereby improving stability. In other embodiments of the present invention, the locking device can also be set in a structural form such as a lock buckle or a latch. Specifically, a latch rod can be set on the knife holder 7, and a matching latch hole can be set on the lateral connecting plate 3. The latch rod can be inserted into the latch hole under the action of gravity or a spring, thereby locking the knife holder. When the knife needs to be moved, the push block can be driven by the knife moving cylinder to lift the latch rod, thereby unlocking the knife holder.

[0056] like Fig.17 and Fig.18 As shown, the middle part of the lock block 30 is installed on the knife seat 7 through the rotating shaft 33, and the rotating shaft 33 is penetrated with an elastic member 31, which is a torsion spring, one end of which abuts against the knife seat 7, and the other end abuts against the upper end of the lock block 30, so as to make the lower end of the lock block 30 engage with the rack 29, and the lower end of the lock block 30 is provided with saw teeth matching the rack 29. In other embodiments of the present invention, the elastic member 31 can be a tension spring or a compression spring, and the specific structures of the knife seat 7 and the lock block 30 are also different for the convenience of installing the elastic member 31, but their functions are to make the lock block 30 engage with the rack 29. The rotating shaft 33 is also penetrated with two T-shaped shaft sleeves 34 arranged opposite to each other, and the rotating shaft hole of the lock block 30 matches the outer diameter of the T-shaped shaft sleeve 34, and the retaining rings of the two T-shaped shaft sleeves 34 are arranged on both sides of the lock block 30 to prevent the lock block 30 from deviating left and right, thereby improving the positioning accuracy. Except for the above structure, the other structures of the cutting device of the rewinder of this embodiment are the same as those in the first embodiment.

[0057] like Fig.21 As shown, the control system of this embodiment includes a connecting plate driving mechanism 5, a knife moving cylinder 21 (i.e., a knife shrinking cylinder), a servo motor 20, a sensor 27, a counter, a memory, a touch screen, and a controller. The working principle of the control system is as follows:

[0058] 1. When you start working, enter the parameters on the touch screen, which can be the exact position of the knife seat, or the required cutting size and then calculate the position of the knife seat;

[0059] 2. The controller sends a start signal, and the servo motor 20 drives the lateral moving seat 19 and the sensor 27 to move along the guide rail 18. The sensor 27 transmits the identification signal of the sensing sheet 26 to the controller, and the controller controls the counter to add or subtract one, thereby numbering and identifying the tool holder. Generally, one of the tool holders at both ends is set as the tool holder No. 1, and the controller saves the position data of each tool holder to the memory;

[0060] 3. According to the position of each tool holder and the input parameters, the controller controls the servo motor 20 and the tool shifting cylinder 21 to unlock and shift the tool holder;

[0061] 4. The controller sends a cutting signal to the connecting plate driving mechanism 5, and the connecting plate driving mechanism 5 pushes the entire row of knife seats on the transverse connecting plate 3 to cut the coil along the knife feed guide rail 2;

[0062] 5. After the cutting is completed, the controller sends a reset signal to the connecting plate driving mechanism 5, and the connecting plate driving mechanism 5 pushes the knife holder to reset.

Claims

1. A cutting device for a rewinding machine, comprising two parallel feed guide rails, a transverse connecting plate, a driving mechanism and a plurality of knife seats, wherein the driving mechanism drives the transverse connecting plate to move on the feed guide rail, and the knife seat is mounted on the transverse connecting plate, characterized in that: A blade is rotatably mounted on the blade seat, and the blade is connected to a clamping portion. A limiting device is also provided on the blade seat. The clamping portion is engaged with the limiting device to keep the blade in the extended position, and the clamping portion is separated from the limiting device to allow the blade to rotate to the retracted position.

2. The cutting device of the rewinding machine according to claim 1, characterized in that: The knife seat is provided with a column, a knife disc is rotatably mounted on the side of the column through a knife disc rotating shaft, the blade is mounted on the front end of the knife disc, and the engaging portion is a convex block protruding backwards on the knife disc.

3. The cutting device of the rewinding machine according to claim 2, characterized in that: The limiting device includes a swing rod, one end of which is rotatably mounted on the column, and a clamping column is provided on the side of the other end. A spring is installed between the swing rod and the knife seat, and the spring urges the swing rod to rotate upward until the upper surface of the swing rod abuts against the limiting protrusion on the column; the clamping portion is engaged with or separated from the clamping column, so that the knife disc is kept in the extended or retracted position.

4. The cutting device of the rewinding machine according to claim 3, characterized in that: It also includes a knife retracting mechanism, which includes a knife retracting cylinder and a first push block, wherein the mounting end of the first push block is mounted on the piston rod of the knife retracting cylinder; when the blade is in the knife extending position, the knife retracting cylinder pushes the first push block to press down the swing rod to separate the clamping column from the clamping part.

5. The cutting device of the rewinding machine according to claim 4, characterized in that: The free end of the first push block is provided with a lower inclined surface, and the knife retracting cylinder pushes the first push block to move horizontally, and the lower inclined surface of the first push block contacts and presses down the swing rod.

6. The cutting device of the rewinding machine according to any one of claims 2 to 4, characterized in that: It also includes a knife extending mechanism, which includes a knife extending cylinder and a second push block installed on the piston rod of the knife extending cylinder. When the blade is in the knife retracting position, the second push block causes the knife disc to rotate under the push of the knife extending cylinder until the engaging portion engages with the limiting device.

7. The cutting device of the rewinding machine according to claim 6, characterized in that: A knife extending roller is arranged below the knife disc rotating shaft, and the knife extending cylinder pushes the second pushing block to contact and push the knife extending roller, so that the knife disc rotates until the engaging portion engages with the limiting device.

8. The cutting device of the rewinding machine according to claim 4 or 5, characterized in that: It also includes a guide rail parallel to the transverse connecting plate, on which a transverse moving seat that can move along the guide rail is installed, and the knife shrinking cylinder is installed on the transverse moving seat.

9. The cutting device of the rewinding machine according to claim 8, characterized in that: The transverse connecting plate is provided with a transverse guide rail parallel to the guide rail, and the bottom of the tool holder is provided with a tool holder slide block, and the tool holder is movably mounted on the transverse guide rail through the tool holder slide block; a tool shifting groove is provided on the tool holder, and a tool shifting clamping portion is provided on the first push block, and the tool retracting cylinder pushes the tool shifting clamping portion of the first push block into the tool shifting groove.

10. The cutting device of the rewinding machine according to claim 8, characterized in that: It also includes an identification mechanism, which includes a sensing sheet installed on the tool holder and a sensor installed on the lateral moving seat.

11. The cutting device according to claim 8, characterized in that: The transverse moving seat is driven by a servo motor through a synchronous belt.

12. The cutting device of the rewinding machine according to any one of claims 1 to 5, characterized in that: It also includes a base, the feed guide rail is arranged on the base, feed sliders matching the feed guide rail are arranged at both ends of the transverse connecting plate, and the driving shaft of the driving mechanism is connected to the feed slider.

13. The cutting device of the rewinding machine according to any one of claims 2 to 5, characterized in that: It also includes a reset device, which causes the cutter disc to rotate to a retracted position when the engaging portion is separated from the limiting device.

14. The cutting device of the rewinding machine according to claim 13, characterized in that: The reset device is a torsion spring, which is sleeved on the cutter disc shaft. One end of the torsion spring is connected to the column, and the other end is connected to the limit block on the cutter disc. When the cutter disc drives the blade to rotate until the limit block abuts against the top of the column, the blade is located in the retracted position.

15. The cutting device of the rewinding machine according to claim 6, characterized in that: It also includes a guide rail parallel to the transverse connecting plate, on which a transverse moving seat that can move along the guide rail is installed, and the knife extending cylinder is installed on the transverse moving seat.

16. A rewinding machine, characterized in that: The rewinding machine is provided with a rewinding machine cutting device as described in any one of claims 1 to 15.

17. A control system for a cutting device of a rewinding machine, characterized in that: It includes a connecting plate driving mechanism, which is used to push the horizontal connecting plate to move along the feed guide rail; a knife extending cylinder, which is used to push the clamping part to engage with the limit device so that the blade remains in the extended position; a knife retracting cylinder, which is used to trigger the separation of the clamping part and the limit device so that the blade rotates to the retracted position; a servo motor, which is used to drive the knife extending cylinder, the knife retracting cylinder and the sensor to move; a sensor, which is used to identify the knife seat on the horizontal connecting plate; a counter, which is used to number the knife seat identified by the sensor; a memory, which is used to store data; and a touch screen, which is used to enter the position parameters of the knife seat; And a controller, which controls the start and stop of the connecting plate driving mechanism and the servo motor, controls the extension and retraction of the knife extending cylinder and the knife retracting cylinder, controls the counter to number the knife holder according to the trigger signal uploaded by the sensor, receives the position parameters entered by the touch screen, and saves the position data of the knife holder and the extension and retraction status of the blade to the memory.

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