A slitting device and slitting method for an electrolytic copper foil raw foil machine

Abstract

The present invention relates to the technical field of coil processing, and particularly to a slitting device and a slitting method for an electrolytic copper foil raw foil machine, including a machine shell, two brackets and a guide wheel group. The two brackets are respectively fixedly connected to the left ends of the front and rear sides of the upper surface of the machine shell, and a copper foil coil is installed through the brackets. The guide wheel group is installed in the middle of the inner side of the machine shell. It also includes a positioning roller, a sliding table, a slitting mechanism and a winding mechanism. The positioning roller is rotatably installed around its own axis in the inner cavity of the machine shell, and the positioning roller is located on the right side of the guide wheel group. The sliding table is installed in the middle of the upper surface of the machine shell along the front-rear direction. The slitting mechanism is installed at the bottom of the sliding table. The winding mechanism is fixedly connected to the right end of the rear side of the machine shell. When grinding the knife, it does not interfere with the copper foil slitting operation, reduces the labor intensity of the staff, has high slitting efficiency, realizes the centering installation of the paper tube, the installation position of the paper tube is accurate, and ensures the winding quality of the copper foil after slitting.

Description

Technical Field

[0001] The present invention relates to the technical field of coil processing, and particularly relates to a slitting device and a slitting method for an electrolytic copper foil raw foil machine. Background Art

[0002] A slitter is a mechanical device that slits wide-width paper, mica tape or film into multiple narrow-width materials, and is commonly used in papermaking machinery, wire and cable mica tape, copper foil, etc. Slitting is to use the rotation of the cutter, and the annular cutter cuts and separates the wide-width copper foil, and then winds the slit narrow-width copper foil through multiple paper tubes; for example, the invention disclosed in the publication number CN112976137A discloses a slitting device for an electrolytic copper foil raw foil machine, including a base, a first slitting roller, a second slitting roller and a cutting knife. A first shock absorber is fixedly installed on the left side of the base, a feeding motor is fixedly installed on the first shock absorber, a feeding roller is fixedly installed at the output end of the feeding motor, and a support frame is fixedly installed on the base. Compared with the prior art, it has the characteristics of integration of slitting and cutting and convenient material collection. However, the slitting knife constantly rubs against the copper foil, and the slitting knife needs to be replaced regularly or sharpened regularly, which will cause shutdown, occupy the operation time of the equipment, and the slitting efficiency is low. In addition, the paper tube for winding the copper foil cannot be mechanically centered, and the paper tube and the moving direction of the copper foil are prone to deviation, and the copper foil will shift during winding, affecting the quality of the copper foil. Summary of the Invention

[0003] In order to overcome the disadvantages of occupying slitting time due to regular replacement of the slitting knife, low slitting efficiency, and poor winding effect of copper foil in the prior art, the technical problem to be solved by the present invention is a slitting device and a slitting method for an electrolytic copper foil raw foil machine.

[0004] To achieve the above object, the present invention provides the following technical solution: A slitting device for an electrolytic copper foil raw foil machine, including a machine shell, two brackets and a guide wheel group. The two brackets are respectively fixedly connected to the front and rear sides of the left end of the upper surface of the machine shell, and the copper foil coil is installed through the brackets. The guide wheel group is installed in the middle of the inner side of the machine shell. It also includes a positioning roller, a sliding table, a slitting mechanism and a winding mechanism. The positioning roller is rotatably installed around its own axis in the inner cavity of the machine shell, and the positioning roller is located on the right side of the guide wheel group; the sliding table is installed in the middle of the upper surface of the machine shell along the front-rear direction; the slitting mechanism is installed at the bottom of the sliding table; the winding mechanism is fixedly connected to the right end of the rear side of the machine shell.

[0005] The purpose is to grind the cutter without stopping the machine, so as to improve the efficiency of copper foil slitting. The slitting mechanism includes a box, a first motor, a roller, a guide groove, a limit rod, a slide plate, a pin, a grinding assembly, a second motor, a first rotating shaft and a cutter. The box is installed at the bottom of the slide, and the box can move left and right through the slide; the first motor is installed at the top of the rear side of the inner cavity of the box; the roller is installed at the output end of the first motor, and a guide groove is opened on the outer wall of the roller; the limit rod is installed in the middle of the inner cavity of the box along the front and rear direction; the slide plate can slide back and forth. It is sleeved on the outer wall of the limit rod, and the outer wall of the limit rod is rectangular in shape to prevent the skateboard from rotating; one end of the pin is installed at the center position of the top of the skateboard, and the other end is inserted in the inner cavity of the guide groove; there are several grinding components, which are installed on the lower surface of the skateboard equidistantly from front to back; the second motor is installed at the bottom end of the front side of the box body; one end of the first rotating shaft is installed on the output end of the second motor, and the other end is rotatably connected to the rear side of the inner cavity of the box body; the number of cutters is the same as that of the grinding components, which are installed on the outer wall of the first rotating shaft equidistantly from front to back, and the sharpness of the cutters is improved by the grinding components.

[0006] Preferably, the guide grooves are distributed on the outer wall of the drum in a wave shape.

[0007] Preferably, the grinding assembly includes a support seat, a slide, a spring, a slider and a whetstone. The support seat is fixedly connected to the lower surface of the slider, and slides are provided at both front and rear ends of the lower surface of the support seat; the spring and the slider are respectively inserted into the inner cavity of the slide from the outside to the inside, and the slider is dovetail-shaped to prevent the slider from detaching from the slide; the whetstone is installed on the lower surface of the slider.

[0008] Preferably, the inner side of the whetstone is an inclined surface, and the inner surface of the whetstone is parallel to the outer wall edge of the cutting knife.

[0009] Preferably, the winding mechanism includes a support plate, a third motor and a positioning assembly, the support plate is fixedly connected to the right end of the rear side of the casing; there are two third motors, which are respectively installed at the upper and lower ends of the rear side of the support plate; the positioning assembly is installed at the output end of the third motor along the front-to-back direction.

[0010] Preferably, the purpose is to center and install the paper tube, which ensures the quality of copper foil winding. The positioning component includes a second rotating shaft, a groove, a third rotating shaft, a gear, a plug board, a rack, a pin, a permanent magnet, a crank and a positioning column. The second rotating shaft is installed at the output end of the third motor. The second rotating shaft is hollow. Grooves are provided at the top and the right end of the front surface of the second rotating shaft. The third rotating shaft is rotatably installed in the inner cavity of the second rotating shaft around its own axis. The number of gears is several, and they are equidistantly installed on the outer wall of the third rotating shaft from front to back. The number of plug boards is several, and every two are inserted into the left and right ends of the inner cavity of the second rotating shaft in a left-right opposite manner. The outer side of the plug board extends out of the outer wall of the second rotating shaft. The shape of the plug board is U-shaped. The rack is installed on the inner side of the plug board, and the rack is meshed and linked with the gear. The pin is installed on the inner side of the plug board, and the pin can extend out of the outer wall of the second rotating shaft. The permanent magnet is installed in the groove on the front surface of the second rotating shaft. The crank is rotatably installed at the front end of the third rotating shaft. The positioning column is installed at the rear side of the crank. The permanent magnet and the positioning column are magnetically attracted to position the crank.

[0011] Preferably, the two racks rotate 180 degrees relative to the axis of the third rotating shaft and coincide.

[0012] A slitting method for a slitting device of an electrolytic copper foil raw foil machine includes the following steps:

[0013] Step 1, the copper foil coil is placed on the bracket. The copper foil moves under the rolling of the guide wheel group and the positioning roller. The second motor drives the cutter on the first rotating shaft to rotate. The cutter slits the copper foil passing through the positioning roller. The third motor drives the second rotating shaft to rotate. The second rotating shaft winds the slit copper foil to achieve the purpose of copper foil slitting.

[0014] Step 2, as the cutter continuously cuts the copper foil, its sharpness gradually deteriorates. The first motor drives the roller to rotate. As the guide groove rotates, the inclined surface of the guide groove squeezes the pin to move back and forth. When the pin is at the corner of the guide groove, the guide groove can keep the pin stationary for a certain time. Under the elastic force of the spring, the sharpening stone on the slider is always in contact with the cutter. The cutter is sharpened by the rotation of the cutter to ensure the slitting effect of the cutter on the copper foil and prevent the machine from stopping due to tool change.

[0015] Step 3, rotate the crank to disengage the positioning column from the permanent magnet. Use the crank to drive the third rotating shaft to rotate counterclockwise. Under the transmission of the gear and the rack, the two plug boards move inward at the same time. The plug board and the pin enter the second rotating shaft, releasing the positioning of the paper tube. Then, the paper tube wound with copper foil can be removed from the second rotating shaft. The empty paper tube is sleeved on the outer wall of the second rotating shaft and is located at the position of the plug board. Rotate the crank to make the third rotating shaft rotate clockwise. Under the traction of the rack, the plug board moves outward. The inner inclined surface of the plug board squeezes the paper tube to center the paper tube. When the pin pierces into the paper tube, the paper tube is fixed on the second rotating shaft, realizing the centering replacement of the paper tube, which is beneficial to the precise winding of the copper foil by the paper tube.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention drives the roller to rotate through the first motor. With the cooperation of the guide groove and the pin, the sliding plate can move back and forth along the limiting rod. Under the elastic force of the spring, the slider is extruded, so that the grinding stone contacts the cutting knife. As the cutting knife rotates, grinding is achieved. During grinding, it does not interfere with the copper foil slitting operation, reduces the labor intensity of workers, and has high slitting efficiency.

[0018] 2. The present invention drives the third rotating shaft to rotate clockwise or counterclockwise through the crank. Under the transmission of the gear and the rack, the two inserting plates move outward or inward simultaneously. Furthermore, the inserting plates can be moved out of or into the second rotating shaft. The inclined surface of the inserting plate can extrude the paper tube, realizing the centering installation of the paper tube. The installation position of the paper tube is accurate, ensuring the winding quality of the copper foil after slitting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the present invention.

[0020] Figure 2 It is a right-side sectional view of the slitting mechanism of the present invention.

[0021] Figure 3 It is for the present invention Figure 2 The enlarged view of part A in it.

[0022] Figure 4 It is an unfolded view of the roller of the present invention.

[0023] Figure 5 It is a schematic structural diagram of the winding mechanism of the present invention.

[0024] Figure 6 It is a top sectional view of the positioning component of the present invention.

[0025] Figure 7 It is a front sectional view of the positioning component of the present invention.

[0026] Figure 8 It is for the present invention Figure 6 The enlarged view of part B in it.

[0027] In the figure: 1. Machine housing; 2. Bracket; 3. Guide wheel set; 4. Positioning roller; 5. Slide table; 6. Slitting mechanism; 7. Rewinding mechanism; 61. Box body; 62. First motor; 63. Drum; 64. Guide groove; 65. Limit rod; 66. Slide plate; 67. Pin; 68. Grinding assembly; 69. Second motor; 610. First rotating shaft; 611. Cutter; 681. Support seat; 682. Spring; 683. Slide block; 684. Grinding stone; 71. Support plate; 72. Third motor; 73. Positioning assembly; 731. Second rotating shaft; 732. Third rotating shaft; 733. Gear; 734. Insert plate; 735. Rack; 736. Insert pin; 737. Permanent magnet; 738. Crank; 739. Positioning column. Detailed implementation mode

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] The present invention provides a technical solution: a slitting device for an electrolytic copper foil raw foil machine, as Figures 1-8 shown, including a machine housing 1, two brackets 2 and a guide wheel set 3. The two brackets 2 are respectively fixedly connected to the front and rear sides at the left end of the upper surface of the machine housing 1. The brackets 2 support the copper foil coil. The guide wheel set 3 is fixedly connected to the middle part inside the machine housing 1. A positioning roller 4 capable of rotating around its own axis is installed inside the machine housing 1. The positioning roller 4 is located on the right side of the guide wheel set 3. The copper foil is transmitted through the guide wheel set 3 and the positioning roller 4. A slide table 5 is fixedly connected to the middle part of the upper surface of the machine housing 1. A slitting mechanism 6 is installed at the bottom of the slide table 5. A rewinding mechanism 7 is fixedly connected to the right end at the rear of the machine housing 1.

[0030] The wide-width copper foil coil is supported and positioned by the bracket 2. The copper foil moves in a specified direction through the rolling of the guide wheel set 3 and the positioning roller 4, so that the copper foil passes through the slitting mechanism 6, and the slitting mechanism 6 cuts the copper foil. Finally, the rewinding mechanism 7 winds up the narrow-width copper foil.

[0031] The slide table 5 includes a frame, guide rods, a slide seat and bolts. The frame is fixedly connected to the middle part of the upper surface of the machine housing 1. The two guide rods are respectively installed in the inner cavity of the frame in the left-right direction. The slide seat is sleeved on the outer wall of the guide rod and can slide left and right. The bolt is screwed on the top of the slide seat. When the bolt rotates and presses down the guide rod, the slide seat can be positioned.

[0032] The slitting mechanism 6 includes a box body 61 fixedly connected to the bottom of the sliding seat. A first motor 62 is installed at the rear side of the inner cavity of the box body 61. A roller 63 is installed at the output end of the first motor 62. A guide groove 64 is circumferentially formed on the outer wall of the roller 63. A limiting rod 65 is installed along the front-back direction at the bottom of the inner cavity of the box body 61. A sliding plate 66 capable of sliding back and forth is sleeved on the outer wall of the limiting rod 65. The outer wall of the limiting rod 65 is rectangular in shape to prevent the sliding plate 66 from rotating. One end of a pin 67 is installed on the top of the sliding plate 66. The other end of the pin 67 is inserted into the inner cavity of the guide groove 64. The guide grooves 64 are distributed in a wavy shape on the outer wall of the roller 63. When the roller 63 rotates, the inclined surface of the inner wall of the guide groove 64 presses the pin 67, causing the sliding plate 66 to slide left and right on the limiting rod 65. Grinding assemblies 68 are equidistantly installed on the lower surface of the sliding plate 66 from front to back. A second motor 69 is installed at the bottom end of the front surface of the box body 61. One end of a first rotating shaft 610 is installed at the output end of the second motor 69. The other end of the first rotating shaft 610 is rotatably connected to the rear side of the inner cavity of the box body 61. Cutting knives 611 are equidistantly installed on the outer wall of the first rotating shaft 610 from front to back. The cutting knives 611 correspond to the grinding assemblies 68 one by one. The copper foil is slit by the rotation of the cutting knives 611.

[0033] The second motor 69 drives the cutting knives 611 on the first rotating shaft 610 to rotate, and the cutting knives 611 slit the copper foil passing through the positioning roller 4.

[0034] As the cutting knives 611 continuously cut the copper foil, their sharpness gradually deteriorates. The first motor 62 drives the roller 63 to rotate. As the guide grooves 64 rotate, the inclined surfaces of the guide grooves 64 press the pins 67 to move back and forth. When the pins 67 are at the corners of the guide grooves 64, the guide grooves 64 can keep the pins 67 stationary for a certain period of time. Under the elastic force of the springs 682, the sharpening stones 684 on the sliders 683 are always in contact with the cutting knives 611. Grinding of the cutting knives 611 is achieved through the rotation of the cutting knives 611, ensuring the slitting effect of the cutting knives 611 on the copper foil and preventing the machine from stopping due to tool change.

[0035] As a preferred solution, furthermore, the grinding assembly 68 includes a support seat 681 installed on the lower surface of the sliding plate 66. Slideways are formed at both the front and rear ends of the lower surface of the support seat 681. Springs 682 and sliders 683 are respectively inserted into the inner cavities of the slideways from outside to inside. The sliders 683 are in the shape of a dovetail to prevent the sliders 683 from disengaging from the slideways. Sharpening stones 684 are installed at the bottoms of the sliders 683. The two sharpening stones 684 at the bottom of the support seat 681 face each other front and back. The inner surfaces of the sharpening stones 684 are parallel to the outer wall cutting edges of the cutting knives 611. When the sharpening stones 684 are in contact with the cutting knives 611, the sharpening stones 684 grind the cutting knives 611.

[0036] As a preferred solution, further, the winding mechanism 7 includes a support plate 71 fixedly connected to the right rear end of the casing 1. At both the upper and lower ends of the rear side of the support plate 71, a third motor 72 is installed. The output end of the third motor 72 is equipped with a positioning assembly 73. The paper tube is positioned through the positioning assembly 73, facilitating the winding of the copper foil by the paper tube.

[0037] As a preferred solution, further, the positioning assembly 73 includes a second rotating shaft 731 installed at the output end of the third motor 72. The outer wall of the second rotating shaft 731 is used for supporting the paper tube. The second rotating shaft 731 is hollow. Inside the cavity of the second rotating shaft 731, a third rotating shaft 732 capable of rotating around its own axis is installed. On the outer wall of the third rotating shaft 732, gears 733 are equidistantly installed from front to back. On both the left and right sides of the cavity of the second rotating shaft 731, inserting plates 734 are equidistantly inserted from front to back. The shape of the inserting plate 734 is U-shaped. The outer side of the inserting plate 734 extends out of the outer wall of the second rotating shaft 731. The inner side of the inserting plate 734 is an inclined surface, which squeezes the paper tube to center the paper tube on the second rotating shaft 731. A rack 735 meshed with the gear 733 is installed on the inner side of the inserting plate 734. An inserting pin 736 is installed inside the cavity of the inserting plate 734. The outer side of the inserting pin 736 extends out of the outer wall of the second rotating shaft 731. When the inserting pin 736 pierces into the paper tube, the paper tube can be fixed to the second rotating shaft 731. At the top and right end of the front side of the second rotating shaft 731, grooves are opened. Inside the grooves, permanent magnets 737 are installed. At the front end of the third rotating shaft 732, a rotatable crank 738 is installed. At the rear side of the crank 738, a positioning column 739 inserted into the groove is installed. The positioning column 739 and the permanent magnet 737 are magnetically attracted to position the crank 738.

[0038] The third motor 72 drives the second rotating shaft 731 to rotate, and the paper tube on the second rotating shaft 731 rotates to wind the slit narrow-width copper foil.

[0039] Rotate the crank 738 to separate the positioning column 739 from the permanent magnet 737. Use the crank 738 to drive the third rotating shaft 732 to rotate counterclockwise. Under the transmission of the gear 733 and the rack 735, the two inserting plates 734 move inward simultaneously. The inserting plates 734 and the inserting pins 736 enter the second rotating shaft 731, releasing the positioning of the paper tube. Then, the paper tube wound with copper foil can be removed from the second rotating shaft 731. A blank paper tube is sleeved on the outer wall of the second rotating shaft 731 and is located at the position where the inserting plates 734 are located. Rotate the third rotating shaft 732 clockwise through the crank 738. Under the traction of the rack 735, the inserting plates 734 move outward. The inner inclined surface of the inserting plates 734 squeezes the paper tube to center the paper tube. When the inserting pins 736 pierce into the paper tube, the paper tube is fixed on the second rotating shaft 731, realizing the centering replacement of the paper tube, which is beneficial for the accurate winding of the copper foil by the paper tube.

[0040] As a preferred solution, further, the two racks 735 are rotated 180 degrees relative to the axis of the third rotating shaft 732 to coincide. When the gear 733 rotates, the two racks 735 move in opposite directions, so that the two plug plates 734 can move inward or outward simultaneously.

[0041] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slitting device for an electrolytic copper foil raw foil machine, comprising a machine shell (1), two brackets (2) and a guide wheel group (3). The two brackets (2) are respectively fixedly connected to the left ends of the front and rear sides of the upper surface of the machine shell (1). A copper foil coil is installed through the brackets (2). The guide wheel group (3) is installed in the middle of the inner side of the machine shell (1), and is characterized in that, The slitting device of the electrolytic copper foil raw foil machine further includes: A positioning roller (4), rotatably mounted around its own axis inside the housing (1), and the positioning roller (4) is located on the right side of the guide wheel group (3); A sliding table (5), mounted in the middle of the upper surface of the housing (1) in the front-back direction; A slitting mechanism (6), mounted at the bottom of the sliding table (5); A winding mechanism (7), fixedly connected to the right end of the rear side of the housing (1); The slitting mechanism (6) includes: A box body (61), mounted at the bottom of the sliding table (5), and the box body (61) can move left and right through the sliding table (5); A first motor (62), mounted at the top of the rear side inside the box body (61); A roller (63), mounted at the output end of the first motor (62), and a guide groove (64) is provided on the outer wall of the roller (63); A limiting rod (65), mounted in the middle of the inner cavity of the box body (61) in the front-back direction; A sliding plate (66), slidably sleeved on the outer wall of the limiting rod (65), and the outer wall of the limiting rod (65) is rectangular in shape to prevent the sliding plate (66) from rotating; A pin (67), one end of which is mounted at the center of the top surface of the sliding plate (66), and the other end is inserted into the inner cavity of the guide groove (64); A plurality of grinding assemblies (68), equidistantly mounted on the lower surface of the sliding plate (66) from front to back; A second motor (69), mounted at the bottom of the front surface of the box body (61); A first rotating shaft (610), one end of which is mounted at the output end of the second motor (69), and the other end is rotatably connected to the rear side inside the box body (61); Cutting knives (611), the number of which is the same as that of the grinding assemblies (68), are equidistantly mounted on the outer wall of the first rotating shaft (610) from front to back, and the sharpness of the cutting knives (611) is improved through the grinding assemblies (68); The grinding assembly (68) includes: A support seat (681), fixedly connected to the lower surface of the sliding plate (66), and slideways are provided at both the front and rear ends of the lower surface of the support seat (681); A spring (682) and a slider (683), respectively inserted into the inner cavity of the slideway from outside to inside, and the slider (683) is in the shape of a dovetail to prevent the slider (683) from disengaging from the slideway; A grinding stone (684), mounted on the lower surface of the slider (683); The winding mechanism (7) includes: A support plate (71), fixedly connected to the right end of the rear side of the housing (1); Two third motors (72), respectively mounted at the upper and lower ends of the rear side of the support plate (71); A positioning assembly (73), mounted at the output end of the third motor (72) in the front-back direction.

2. The slitting device of an electrolytic copper foil raw foil machine according to claim 1, characterized in that, The guide grooves (64) are distributed in a wavy shape on the outer wall of the roller (63).

3. The slitting device of an electrolytic copper foil raw foil machine according to claim 2, characterized in that, The inner side of the grinding stone (684) is an inclined surface, and the inner surface of the grinding stone (684) is parallel to the outer wall edge of the cutting knife (611).

4. The slitting device of an electrolytic copper foil raw foil machine according to claim 3, characterized in that The positioning assembly (73) includes: A second rotating shaft (731), mounted at the output end of the third motor (72), the second rotating shaft (731) is hollow, and grooves are provided at the top and right end of the front surface of the second rotating shaft (731); The third rotating shaft (732) is rotatably mounted around its own axis inside the cavity of the second rotating shaft (731); A number of gears (733) are equidistantly mounted on the outer wall of the third rotating shaft (732) from front to back; A number of inserting plates (734), with every two as a group, are inserted into the left and right ends of the cavity of the second rotating shaft (731) in a left-right opposite manner. The outer side of the inserting plate (734) extends out of the outer wall of the second rotating shaft (731), and the inserting plate (734) is in a U shape; A rack (735) is mounted on the inner side of the inserting plate (734), and the rack (735) is meshed and linked with the gear (733); A pin (736) is mounted on the inner side of the inserting plate (734), and the pin (736) can extend out of the outer wall of the second rotating shaft (731); A permanent magnet (737) is mounted in the grooves at the front top and the right end of the second rotating shaft (731); A crank (738) is rotatably mounted at the front end of the third rotating shaft (732); A positioning column (739) is mounted at the rear side of the crank (738), and the permanent magnet (737) and the positioning column (739) are magnetically attracted to position the crank (738).

5. The slitting device of an electrolytic copper foil raw foil machine according to claim 4, characterized in that The two racks (735) coincide after rotating 180 degrees relative to the axis of the third rotating shaft (732).

6. The slitting method of the slitting device of an electrolytic copper foil raw foil machine according to claim 5, characterized in that, It includes the following steps: Step 1, the copper foil coil is placed on the bracket (2), the copper foil moves under the rolling of the guide wheel group (3) and the positioning roller (4), the second motor (69) drives the cutter (611) on the first rotating shaft (610) to rotate, the cutter (611) cuts the copper foil passing through the positioning roller (4), and the third motor (72) drives the second rotating shaft (731) to rotate, and the second rotating shaft (731) winds the cut copper foil to achieve the purpose of copper foil cutting; Step 2, as the cutter (611) continuously cuts the copper foil, its sharpness gradually deteriorates. The first motor (62) drives the roller (63) to rotate. As the guide groove (64) rotates, the inclined surface of the guide groove (64) squeezes the pin (67) to move back and forth. When the pin (67) is at the corner of the guide groove (64), the guide groove (64) can keep the pin (67) stationary for a certain time. Under the elastic force of the spring (682), the grinding stone (684) on the slider (683) is always in contact with the cutter (611), and the cutter (611) rotates to sharpen the knife, ensuring the cutting effect of the cutter (611) on the copper foil and preventing the machine from stopping due to knife replacement; Step 3: Rotate the crank (738) to disengage the positioning post (739) from the permanent magnet (737). Use the crank (738) to drive the third rotating shaft (732) to rotate counterclockwise. Under the transmission of the gear (733) and the rack (735), the two plug plates (734) move inward simultaneously. The plug plates (734) and the pins (736) enter the second rotating shaft (731), releasing the positioning of the paper tube. Then, the paper tube wound with copper foil can be removed from the second rotating shaft (731). Put the empty paper tube on the outer wall of the second rotating shaft (731) and at the position where the plug plates (734) are located. Rotate the third rotating shaft (732) clockwise through the crank (738). Under the traction of the rack (735), the plug plates (734) move outward. The inner inclined surface of the plug plates (734) presses the paper tube to center the paper tube. When the pins (736) penetrate into the paper tube, the paper tube is fixed on the second rotating shaft (731), realizing the centering replacement of the paper tube, which is beneficial to the accurate winding of copper foil by the paper tube.

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