Adsorption type reel, reeling device and method

Abstract

A suction-type reel, a winding device and a method, comprising a hollow cylinder with openings at both ends, wherein the two cavity plates divide the inner cavity of the cylinder into three parts, wherein the two ends of the inner cavity of the cylinder are air expansion holes, the middle is an adsorption cavity, the sealed suction port is a channel structure in the center of the cavity plate, the air expansion hole communicates with the adsorption cavity through the sealed suction port, and a plurality of adsorption holes are provided on the outer surface of the cylinder of the adsorption cavity. The design of the suction-type reel of the present invention has a large load-bearing capacity and uniform force, and is widely used in battery coating workshops and roller pressing and slitting workshops, and can effectively reduce the wrinkling phenomenon in the winding of lithium battery pole pieces and diaphragms, and reduce the product scrap rate.

Description

Technical Field

[0001] The present invention belongs to the technical field of lithium battery manufacturing, and in particular relates to a lithium battery adsorption type reel, a reeling device and a method. Background Art

[0002] In the production of lithium battery manufacturing industry, coating and winding usually involves wrapping tape on the reel in advance to fix the pole piece or diaphragm. The pole piece or diaphragm is prone to wrinkles during the process of sticking with the tape, which can easily cause wrinkles in multiple layers inside during continuous winding, causing the pole piece or diaphragm to be scrapped. The existing technology mostly controls the winding tension to release the tension accumulated in the inner layer of the pole piece during the winding process of the pole piece or diaphragm to ensure the flatness of the winding, but the winding stability and effect are not good. Summary of the invention

[0003] The purpose of the present invention is to provide an adsorption type reel, a winding device and a method to solve the technical problem of internal multi-layer wrinkles appearing in the coating and continuous winding in the lithium ion battery manufacturing process.

[0004] To achieve the above purpose, the specific technical solution of a suction roll of the present invention is as follows:

[0005] A suction roll comprises a hollow cylinder with openings at both ends, wherein the two cavity plates divide the inner cavity of the cylinder into three parts, the two ends of the inner cavity of the cylinder are air expansion holes, and the middle is an adsorption cavity, the sealed suction port is a hole structure in the center of the cavity plate, the air expansion hole is connected to the adsorption cavity through the sealed suction port, and a plurality of adsorption holes are provided on the outer cylinder corresponding to the adsorption cavity.

[0006] Furthermore, the adsorption holes are symmetrically arranged on both sides of the center line along the length direction of the cylinder, and the adsorption holes on each side are multiple rows of adsorption holes arranged in parallel and equidistantly along the outer circumference of the cylinder, and the number and size of adsorption holes in each row are the same.

[0007] Furthermore, the adsorption hole diameter φ is 5 mm to 10 mm, the horizontal hole edge spacing is 40 mm to 80 mm, and the vertical hole edge spacing is 15 mm to 30 mm.

[0008] Furthermore, the channel is in a trumpet-shaped shape, with the large end facing the air expansion hole and the small end communicating with the adsorption cavity.

[0009] Furthermore, the cavity plate is integrated with the cylinder or is injection molded, and is symmetrically arranged in the inner cavity of the cylinder along the center line of the length direction of the cylinder.

[0010] Furthermore, the reel is made of stainless steel or nylon.

[0011] The present invention also includes an adsorption-type winding device, including an adsorption-type reel, above which a lifting and pressing roller for assisting the winding of the diaphragm and the pole piece is arranged, the lifting and pressing roller is parallel to the axis of the reel, and the lifting and pressing roller is driven by a cylinder to control the adjustable distance between the roller surface of the lifting and pressing roller and the surface of the outer cylinder of the reel; the device also includes a rotating roller, which is an inflatable shaft, which is clamped into the inflatable holes at both ends of the adsorption-type reel and is plugged into the sealed suction port through the front sealing plug, the sealing plug is trumpet-shaped and corresponds to the size of the sealed suction port, and a vent is arranged in the middle; an adsorption tube connected to a negative pressure generating device is arranged at the axis center of the inflatable shaft, and the adsorption tube extends into the adsorption cavity through the vent of the sealing plug; the device also includes a rotating motor, which is connected to the inflatable shaft.

[0012] The present invention also includes a method for winding an adsorption roll, comprising the following steps:

[0013] (a) Clamp the air holes on both sides of the roll through the air shaft, seal the suction port through the rubber plug at the front end of the air shaft, and tighten the air shaft; connect the current collector of a certain thickness horizontally to the adsorption hole of the roll, and drive the lifting and lowering rollers to press on the current collectors;

[0014] (b) Turn on the negative pressure generating device, the adsorption airflow runs, the current collector is adsorbed on the reel through the adsorption hole, the rotating motor runs, the air shaft rotates to drive the reel body to wrap the current collector around the reel body, and the normal winding process begins. When the length of the current collector is ≥100m, lift the lifting and pressing roller;

[0015] (c) Stop winding, cut off the current collector, turn off the rotating motor and the negative pressure generating device, transfer the material lifting vehicle to the bottom of the reel body, ensure that the current collector roll is in contact with the lifting platform, turn off the pressure of the air shaft, retract the air shafts on both sides, and transfer the current collector roll to the next process via the lifting vehicle to complete the winding process.

[0016] Furthermore, when the current collector length reaches 100 m, the lifting and lowering rollers are lifted.

[0017] Furthermore, the negative pressure ranges from -5 kPa to -20 kPa, and the thickness of the current collector is from 100 μm to 300 μm.

[0018] The adsorption roll of the present invention has the following advantages: the roll has a large load-bearing capacity, is evenly stressed, is detachable and movable, and the current collector winding roll can be transferred as a whole to the next process. By winding up the adsorption roll, the wrinkle phenomenon in the coating process can be effectively reduced, the amount of scrapped pole pieces or diaphragms can be reduced, and production efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the suction roll structure of the present invention;

[0020] Figure 2It is a schematic structural diagram of the adsorption type winding device of the present invention;

[0021] Explanation of the markings in the figure: 1. Cylinder; 2. Adsorption hole; 3. Adsorption cavity; 4. Cavity plate; 5. Sealed suction port; 6. Air expansion hole; 7. Rotating motor; 8. Cylinder; 9. Lifting and lowering roller; 10. Air expansion shaft. DETAILED DESCRIPTION

[0022] In order to better understand the purpose, structure and function of the present invention, the following is a further detailed description of an adsorption reel, a winding device and a method of the present invention in conjunction with the accompanying drawings.

[0023] Example 1

[0024] like Figure 1 As shown, an adsorption reel of the present invention has a load-bearing capacity of 400kg. The reel is made of nylon and includes a hollow cylinder 1 with openings at both ends. Two cavity plates 4 are symmetrically injected into the inner cavity of the cylinder along the center line of the length direction of the reel. The inner cavity of the cylinder 1 of the adsorption reel is divided into three parts. The two ends of the inner cavity of the cylinder are air expansion holes 6, and the middle of the inner cavity of the cylinder is an adsorption cavity 3. The sealed suction port 5 is a trumpet-shaped channel in the center of the cavity plate 4, with the large end facing the air expansion hole 6 and the small end communicating with the adsorption cavity 3, serving as a communication channel between the air expansion hole 6 and the adsorption cavity 3. On the surface of the outer cylinder 1 corresponding to the adsorption cavity 3, the circular adsorption holes 2 are arranged symmetrically along the center line of the length direction of the cylinder 1 to ensure that the load and force of the collector on the cylinder 1 are uniform. Multiple rows of parallel and equally spaced adsorption holes 2 are arranged on both sides of the movement direction of the cylinder 1. The number and size of adsorption holes 2 in each row are the same, the adsorption hole diameter φ is 5mm, the horizontal hole edge spacing is 80mm, and the longitudinal hole edge spacing is 30mm.

[0025] The present invention also includes an adsorption-type winding device, including the above-mentioned adsorption-type reel, a lifting and pressing roller 9 for assisting the collection of fluid in winding is arranged above the adsorption-type reel, the lifting and pressing roller 9 is parallel to the axis of the reel, and the lifting and pressing roller 9 is driven and controlled by a cylinder 8, and the distance between the roller surface of the lifting and pressing roller 9 and the surface of the outer cylinder of the reel is adjustable; the device also includes a rotating roller, and the rotating roller is an inflatable shaft 10, the inflatable shaft 10 is clamped into the inflatable holes 6 at both ends of the adsorption-type reel, and is plugged into the sealed suction port 5 through the front end sealing plug, the sealing plug is in the shape of a trumpet and corresponds to the size of the sealed suction port 5, and a vent is arranged in the middle; an adsorption tube connected to a negative pressure generating device is arranged at the axis center of the inflatable shaft 10, and the adsorption tube extends into the adsorption cavity 3 through the vent of the sealing plug; the device also includes a rotating motor 7, and the rotating motor 7 is connected to the inflatable shaft 10.

[0026] When winding, first ensure that the sealing suction port 5 is unobstructed, the inflation shaft 10 clamps the inflation holes 6 on both sides of the reel body 1, the sealing suction port 5 is sealed by the rubber plug at the front end of the inflation shaft 10, and the inflation shaft 10 is expanded; the current collector with a thickness of 100μm is horizontally connected to the adsorption hole 2 of the reel, the adsorption hole 2 adsorbs the current collector, and the cylinder 8 drives the lifting and pressing roller 9 to press on the current collector. Turn on the negative pressure generating device, the adsorption airflow runs, and the adsorption pressure is controlled to be -5kpa. The current collector is adsorbed on the reel body 1 through the adsorption hole 2. The rotating motor 7 is running, the inflation shaft 10 rotates to drive the reel body 1 to wrap the current collector around the reel body 1, and the cylinder 8 drives the lifting and pressing roller 9 to press the current collector during the winding process, and the normal winding process begins. When the length of the current collector reaches 100m, lift the lifting and pressing roller; when the adsorption length of the current collector reaches 800m, stop winding. When the winding stops, the current collector is cut off, the rotating motor 7 and the negative pressure generating device are turned off first, and the material lifting vehicle is transferred to the bottom of the winding stop cylinder 1 to ensure that the current collector roll is in contact with the lifting platform, and the pressure of the air shaft 10 is turned off to retract the air shafts 10 on both sides. The current collector roll is transferred to the next process by the lifting vehicle to complete the winding process. The present invention is also applicable to the winding of the diaphragm. Through the adsorption-type winding method, the wrinkle phenomenon can be effectively reduced, the scrap amount of the pole piece and the diaphragm can be reduced, the cost of auxiliary materials can be reduced, and the production qualification rate can be improved.

[0027] Example 2

[0028] like Figure 1 As shown, an adsorption reel of the present invention has a load-bearing capacity of 600kg and is made of stainless steel. It includes a hollow cylinder 1 with openings at both ends, two cavity plates 4 symmetrically arranged in the inner cavity of the cylinder along the center line of the length direction of the reel, and the cavity plates 4 and the cylinder 1 are integrally formed. The inner cavity of the cylinder 1 of the adsorption reel is divided into three parts, and the two ends of the inner cavity of the cylinder are air expansion holes 6, and the middle of the inner cavity of the cylinder is the adsorption cavity 3. The sealed suction port 5 is a trumpet-shaped channel in the center of the cavity plate 4, with the large end facing the air expansion hole 6 and the small end communicating with the adsorption cavity 3, serving as a connecting channel between the air expansion hole 6 and the adsorption cavity 3. On the surface of the outer cylinder 1 corresponding to the adsorption cavity 3, the circular adsorption holes 2 are arranged symmetrically along the center line of the length direction of the cylinder 1, to ensure that the load-bearing and force-bearing of the collector on the cylinder 1 are uniform. Multiple rows of parallel adsorption holes 2 with equal spacing are arranged on both sides along the moving direction of the cylinder 1. The number and size of adsorption holes 2 in each row are the same. The adsorption hole diameter φ is 10mm, the horizontal hole edge spacing is 40mm, and the vertical hole edge spacing is 15mm.

[0029] The present invention also includes an adsorption-type winding device, including the above-mentioned adsorption-type reel, wherein a lifting and lowering pressure roller 9 for assisting the winding of the diaphragm and the pole piece is arranged above the adsorption-type reel, the lifting and lowering pressure roller 9 is parallel to the axis of the reel, and the lifting and lowering pressure roller 9 is driven and controlled by a cylinder 8, and the distance between the roller surface of the lifting and lowering pressure roller 9 and the surface of the outer cylinder of the reel is adjustable; the device also includes a rotating roller, and the rotating roller is an inflatable shaft 10, the inflatable shaft 10 is clamped into the inflatable holes 6 at both ends of the adsorption-type reel, and is plugged into the sealed suction port 5 through the front end sealing plug, the sealing plug is in the shape of a trumpet and corresponds to the size of the sealed suction port 5, and a vent is arranged in the middle; the axis center of the inflatable shaft 10 is provided with an adsorption tube connected to a negative pressure generating device, and the adsorption tube extends into the adsorption cavity 3 through the vent of the sealing plug; the device also includes a rotating motor 7, and the rotating motor 7 is connected to the inflatable shaft 10.

[0030] When winding, first ensure that the sealing suction port 5 is unobstructed, the inflation shaft 10 clamps the inflation holes 6 on both sides of the reel body 1, the sealing suction port 5 is sealed by the rubber plug at the front end of the inflation shaft 10, and the inflation shaft 10 is expanded; the current collector with a thickness of 300μm is horizontally connected to the adsorption hole 2 of the reel, the adsorption hole 2 adsorbs the current collector, and the cylinder 8 drives the lifting and pressing roller 9 to press on the current collector. Turn on the negative pressure generating device, the adsorption airflow runs, and the adsorption pressure is controlled to be -20kpa. The current collector is adsorbed on the reel body 1 through the adsorption hole 2. The rotating motor 7 is running, the inflation shaft 10 rotates to drive the reel body 1 to wrap the current collector around the reel body 1, and the cylinder 8 drives the lifting and pressing roller 9 to press the current collector during the winding process, and the normal winding process begins. When the length of the current collector reaches 120m, lift the lifting and pressing roller; when the adsorption length of the current collector reaches 1000m, stop winding. When the winding stops, the current collector is cut off, the rotating motor 7 and the negative pressure generating device are turned off first, the material lifting vehicle is transferred to the bottom of the winding drum 1, the current collector roll is ensured to be in contact with the lifting platform, the pressure of the air shaft 10 is turned off, the air shafts 10 on both sides are retracted, and the current collector roll is transferred to the next process by the lifting vehicle to complete the winding process. The present invention is also applicable to the winding of the diaphragm. Through the adsorption-type winding method, the wrinkle phenomenon can be effectively reduced, the scrap amount of the pole piece or diaphragm can be reduced, the cost of auxiliary materials can be reduced, and the production qualification rate can be improved.

[0031] Example 3

[0032] like Figure 1As shown, an adsorption reel of the present invention has a load-bearing capacity of 600kg and is made of stainless steel. It includes a hollow cylinder 1 with openings at both ends, two cavity plates 4 symmetrically arranged in the inner cavity of the cylinder along the center line of the length direction of the reel, and the cavity plates 4 and the cylinder 1 are integrally formed. The inner cavity of the cylinder 1 of the adsorption reel is divided into three parts, and the two ends of the inner cavity of the cylinder are air expansion holes 6, and the middle of the inner cavity of the cylinder is the adsorption cavity 3. The sealed suction port 5 is a trumpet-shaped channel in the center of the cavity plate 4, with the large end facing the air expansion hole 6 and the small end communicating with the adsorption cavity 3, serving as a connecting channel between the air expansion hole 6 and the adsorption cavity 3. On the surface of the outer cylinder 1 corresponding to the adsorption cavity 3, the circular adsorption holes 2 are arranged symmetrically along the center line of the length direction of the cylinder 1, to ensure that the load-bearing and force-bearing of the collector on the cylinder 1 are uniform. Multiple rows of parallel adsorption holes 2 with equal spacing are arranged on both sides along the moving direction of the cylinder 1. The number and size of adsorption holes 2 in each row are the same. The adsorption hole diameter φ is 6mm, the horizontal hole edge spacing is 60mm, and the vertical hole edge spacing is 20mm.

[0033] The present invention also includes an adsorption-type winding device, including the above-mentioned adsorption-type reel, wherein a lifting and lowering pressure roller 9 for assisting the winding of the diaphragm and the pole piece is arranged above the adsorption-type reel, the lifting and lowering pressure roller 9 is parallel to the axis of the reel, and the lifting and lowering pressure roller 9 is driven and controlled by a cylinder 8, and the distance between the roller surface of the lifting and lowering pressure roller 9 and the surface of the outer cylinder of the reel is adjustable; the device also includes a rotating roller, and the rotating roller is an inflatable shaft 10, the inflatable shaft 10 is clamped into the inflatable holes 6 at both ends of the adsorption-type reel, and is plugged into the sealed suction port 5 through the front end sealing plug, the sealing plug is in the shape of a trumpet and corresponds to the size of the sealed suction port 5, and a vent is arranged in the middle; the axis center of the inflatable shaft 10 is provided with an adsorption tube connected to a negative pressure generating device, and the adsorption tube extends into the adsorption cavity 3 through the vent of the sealing plug; the device also includes a rotating motor 7, and the rotating motor 7 is connected to the inflatable shaft 10.

[0034] When winding, first ensure that the sealing suction port 5 is unobstructed, the inflation shaft 10 clamps the inflation holes 6 on both sides of the reel body 1, the sealing suction port 5 is sealed by the rubber plug at the front end of the inflation shaft 10, and the inflation shaft 10 is expanded; the current collector with a thickness of 200μm is horizontally connected to the adsorption hole 2 of the reel, the adsorption hole 2 adsorbs the current collector, and the cylinder 8 drives the lifting and pressing roller 9 to press on the current collector. Turn on the negative pressure generating device, the adsorption airflow runs, and the adsorption pressure is controlled to be -10kpa. The current collector is adsorbed on the reel body 1 through the adsorption hole 2. The rotating motor 7 is running, the inflation shaft 10 rotates to drive the reel body 1 to wrap the current collector around the reel body 1, and the cylinder 8 drives the lifting and pressing roller 9 to press the current collector during the winding process, and the normal winding process begins. When the length of the current collector reaches 100m, lift the lifting and pressing roller; when the adsorption length of the current collector reaches 800m, stop winding. When the winding stops, the current collector is cut off, the rotating motor 7 and the negative pressure generating device are turned off first, the material lifting vehicle is transferred to the bottom of the winding drum 1, the current collector roll is ensured to be in contact with the lifting platform, the pressure of the air shaft 10 is turned off, the air shafts 10 on both sides are retracted, and the current collector roll is transferred to the next process by the lifting vehicle to complete the winding process. The present invention is also applicable to the winding of the diaphragm. Through the adsorption-type winding method, the wrinkle phenomenon can be effectively reduced, the scrap amount of the pole piece or diaphragm can be reduced, the cost of auxiliary materials can be reduced, and the production qualification rate can be improved.

[0035] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. An adsorption type winding device, comprising an adsorption type reel, characterized in that: The adsorption reel comprises a hollow cylinder with openings at both ends, and two cavity plates divide the inner cavity of the cylinder into three parts. The two ends of the inner cavity of the cylinder are air expansion holes, and the middle is an adsorption cavity; the sealed suction port is a channel structure in the center of the cavity plate, and the air expansion hole communicates with the adsorption cavity through the sealed suction port. The outer cylinder corresponding to the adsorption cavity is provided with a plurality of adsorption holes connected to the negative pressure generating device; The adsorption holes are symmetrically arranged on the left and right sides of the center line along the length direction of the cylinder, and the adsorption holes on each side are multiple rows of circular adsorption holes arranged in parallel and at equal intervals along the outer circumference of the cylinder, and the number and size of the adsorption holes in each row are the same; The pore structure is in the shape of a trumpet, with the large end facing the air expansion hole and the small end communicating with the adsorption cavity; A lifting and pressing roller for assisting the collection of fluid is arranged above the adsorption roll, the lifting and pressing roller is parallel to the axis of the adsorption roll, and the lifting and pressing roller is controlled by a cylinder drive to achieve an adjustable distance between the roller surface of the lifting and pressing roller and the outer cylinder surface of the roll; the device also includes a rotating roller, the rotating roller is an inflatable shaft, the inflatable shaft is clamped into the inflatable holes at both ends of the adsorption roll, and is plugged into the sealed suction port through the sealing rubber plug at the front end of the inflatable shaft, the sealing rubber plug is in a trumpet shape and corresponds to the size of the sealed suction port, and a vent is arranged in the middle of the sealing rubber plug; the axis of the inflatable shaft is provided with an adsorption tube connected to a negative pressure generating device, and the adsorption tube extends into the adsorption cavity through the vent of the sealing rubber plug; the device also includes a rotating motor, which is connected to the inflatable shaft; The cavity plate is integrated with the cylinder or is injection molded, and the cavity plate is symmetrically arranged in the inner cavity of the cylinder along the center line of the length direction of the cylinder.

2. The adsorption type winding device according to claim 1, characterized in that: The diameter φ of the adsorption holes is 5 mm to 10 mm, the horizontal hole edge spacing of the adsorption holes is 40 mm to 80 mm, and the vertical hole edge spacing of the adsorption holes is 15 mm to 30 mm.

3. The adsorption type winding device according to claim 1, characterized in that: The reel is made of stainless steel or nylon.

4. A winding method of the adsorption winding device according to any one of claims 1 to 3, characterized in that: The following steps are involved: (a) Clamp the air holes on both sides of the roll by an air shaft, seal the suction port by a sealing rubber plug at the front end of the air shaft, and tighten the air shaft; connect a current collector of a certain thickness horizontally to the adsorption hole, and drive the lifting and lowering rollers to press on the current collector by an air cylinder; (b) Turn on the negative pressure generating device, the adsorption airflow runs, the current collector is adsorbed on the reel through the adsorption hole, the rotating motor runs, the air shaft rotates to drive the drum body of the reel to wrap the current collector around the drum body, and the normal winding process begins. When the length of the current collector is ≥100m, lift the lifting and pressing roller; (c) Stop winding, cut off the current collector, turn off the rotating motor and the negative pressure generating device, transfer the material lifting vehicle to the bottom of the reel body, ensure that the current collector roll is in contact with the lifting vehicle, turn off the pressure of the air shaft, retract the air shafts on both sides, and transfer the current collector roll to the next process through the lifting vehicle to complete the winding process.

5. A winding method of an adsorption-type winding device according to claim 4, characterized in that: The negative pressure range of the negative pressure generating device is -5 kPa to -20 kPa, and the thickness of the current collector is 100 μm to 300 μm.

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