JP7284471B1 - Sheet material winding device, sheet material unwinding device, and sheet material winding method by sheet material winding device - Google Patents

Abstract

Kind Code: A1 A coil-shaped electrode plate does not require an electrode plate support that bears its own weight, and it is possible to precisely cope with meandering of the electrode plate, thereby preventing quality problems from occurring in the manufactured electrode plate. do. A turret is connected to a drum shaft while being constrained in the rotational direction, and is connected so as not to be constrained against axial movement of the drum shaft, and the drum shaft and the spool are fixed by an attachment/detachment means. , when the sheet material is meandering, the drum shaft is moved in the axial direction while the turret is restricted from moving in the axial direction, and the drum shaft moves the sheet material through the winding center of the sheet material winding device. It is characterized in that it operates in a direction that coincides with the center. [Selection drawing] Fig. 4

Description

TECHNICAL FIELD The present invention relates to a sheet material winding device or sheet material unwinding device, and an electrode plate winding method or electrode plate unwinding method. The present invention relates to a turret type unwinding device for continuously supplying electrode plates to a roll press and a turret type winding device for winding the electrode plates.

As the number of devices such as electric vehicles powered by lithium-ion batteries is increasing, there is a demand for highly efficient production of the electrode plates that make up the batteries. A turret-type winding device is used in roll press equipment that continuously presses electrode plates to minimize production interruption time such as coil replacement. In this turret-type winding and unwinding device, there is a demand for a mechanism capable of easily correcting the meandering of the electrode plate and attaching and detaching the coil.

Patent Literature 1 describes an apparatus for unwinding, drying, and rewinding an electrode plate wound into a coil for the purpose of drying the electrode plate. In Patent Document 1, it is described that the drum shaft is fixed in both unwinding and winding of the electrode plate, and a plurality of drum shafts are arranged.

Patent Document 2 discloses a winding device in which a driving device for rotating a spool is configured to be movable in the circumferential direction and radial direction of a reel drum along with the axial center of movement of the spool, and a connecting coupling and Providing a connecting joint comprising a connecting member is described.

Patent Literature 3 describes that the webbing take-up device can include a moving mechanism that moves the spool in the axial direction.

JP 2014-107237 A JP-A-2000-255854 Japanese Patent No. 5819255

Lithium-ion batteries are made by coating the surface of a metal foil made of aluminum or copper with an active material such as lithium metal, which can store electrical energy, in the longitudinal direction. The coated part of the electrode plate coated with the active material is sandwiched between the upper and lower pressing rolls and compressed. A turret-type winding device is required for winding while alternately exchanging the rotatable winding shafts.

When the electrode plate is wound, it is necessary to wind the winding drum while moving the winding drum in the axial direction so that the end surface of the coil is wound in a straight line.

In the conventional devices described in Patent Documents 1 to 3, since the fixed drum shaft corresponds to the meandering of the electrode plate, the drum shaft and the drum shaft driving mechanism can be moved in the axial direction together. Having a mechanism is described.

In the future, in order to increase the productivity of electrode plates, which are materials for lithium ion batteries, the width and diameter of coils will increase, and the weight of the entire winding device will increase. The weight of equipment that follows the meandering motion and moves in the axial direction of the drum also increases.
There is a demand for a turret-type winding and unwinding device that can continuously wind and unwind an electrode plate and follow the meandering motion of the electrode plate with a simple mechanism.

It is necessary to extract the wound coiled electrode plate from the drum shaft. In the inventions described in Patent Documents 1 to 3, the wound coiled electrode plate is pulled out on the opposite side of the drum shaft, so that there is a gap between the drum shaft and the coil core portion of the wound electrode plate mandrel. I need to make a gap. Therefore, an electrode plate support is required to support the weight of the electrode plate. In this case, the weight of the coil-shaped electrode plate is received by the electrode plate support, which causes quality problems in the manufactured electrode plate.

In view of this point, the present invention eliminates the need to provide an electrode plate support that receives the weight of the electrode plate when the coil-shaped electrode plate provided in the conventional apparatus is pulled out, thereby reducing the weight of the entire winding device. To prevent the occurrence of quality problems in a manufactured electrode plate by precisely responding to meandering of an electrode plate with a simple mechanism.

The present invention relates to a sheet material winding device for winding a sheet material or a sheet material unwinding device for winding the sheet material, comprising a drum shaft connected to a spool for winding the sheet material and shaft rotating means for rotating the drum shaft. .

A drum shaft moving means having a drum drive source is fixed to the drum shaft so that the drum shaft can be moved in the axial direction,
An attachment/detachment means is provided for attaching/detaching between the drum shaft and the spool by moving the drum shaft in the axial direction,
By moving the first drum shaft in the axial direction by the drum shaft moving means, attachment and detachment between the drum shaft and the spool are performed,
When the drum shaft and the spool are in a fixed state by the attachment/detachment means and meandering occurs in the sheet material, the second drum shaft is moved in the axial direction by the drum shaft moving means while maintaining the fixed state. The drum shaft is moved in the axial direction, and the drum shaft moves in a direction in which the winding center of the sheet material winding device coincides with the sheet material center.
Further, the present invention provides a drum shaft connected to a spool for winding a sheet material, a shaft rotating means for rotating the drum shaft, an attaching/detaching means for attaching/detaching between the drum shaft and the spool, and a revolving drum arranged parallel to the drum shaft. Equipped with a shaft and a turret plate (hereinafter referred to as a turret) that connects the drum shaft and the revolution shaft, the turret and spool revolve around the revolution shaft to wind the sheet material. It relates to a device or a sheet material unwinding device to be unwound.

A drum shaft moving means is provided to enable axial movement of the drum shaft,
coupling the turret to the drum shaft in a rotationally constrained manner and unconstrained against axial movement of the drum shaft;
When the drum shaft and the spool are fixed by the attachment/detachment means and meandering occurs in the sheet material, the drum shaft is moved in the axial direction while the restriction on the axial movement of the turret is maintained. The shaft is characterized in that it moves the winding center of the sheet material winding device in a direction coincident with the sheet material center.

Specifically, the present invention is a turret having means for winding electrode plates onto spools by incorporating drum shafts into two turrets facing each other, revolving the turrets, and alternately winding the electrode plates onto a plurality of spools. In the mold winding device, two different operations are performed for different purposes: matching the electrode plate center with the winding center and attachment/detachment of the spool by the drum shaft in response to the meandering of the electrode plate. A turret-type winding device for an electrode plate is proposed, which is characterized by using an axial movement mechanism for a drum shaft arranged on the turret and not moving the turret and the revolving shaft together in the axial direction.

According to the present invention, the drum shaft for winding the electrode plate and the shaft moving means are arranged in opposite directions to the right and left turrets, and the rotating force of the motor is used as the moving force in the axial direction of the drum in the shaft moving mechanism on at least one side. An electrode plate characterized by having a linear motion mechanism for replacing and having means for moving the drum shaft to an arbitrary axial position by instructing the rotation direction and rotation angle values to the motor. We propose a turret type winding device.

In the present invention, a drum shaft for winding the electrode plate and a motor for rotating the drum shaft are arranged on a revolving turret, and an idle shaft having a spline is arranged between the drum shaft and the motor. A turret-type winding device for electrode plates is proposed in which the drum shaft can be moved in the axial direction while the drum shaft is continuously rotated by the driving force of a motor.

In the above description, the electrode plate winding device or the electrode plate unwinding device has been described, but the application to the electrode plate winding device or the electrode plate unwinding device is a typical example, and the present invention can also be applied to a winding device for winding a sheet material such as a metal sheet material or an unwinding device for unwinding a sheet material. Therefore, in the specification of this application, the sheet material can be read as an electrode plate. The claimed sheet material includes an electrode plate.

According to the present invention, in the drum shaft of the electrode plate turret-type winding device arranged on the delivery side of the roll press, the drum follows the movement of the spool for winding the sealing material and the meandering of the electrode plate. By utilizing the fact that the movement of the shaft is the same in the axial direction of the drum, it is possible to control and operate the two movements with one device.

Furthermore, when a device for moving the drum shaft is combined with the turret, there is no need to axially move the revolving shaft together with the turret following the meandering of the electrode plate, and the winding device or unwinding mechanism can be simplified. When extracting the coiled electrode plate required by the apparatus, it is not necessary to provide an electrode plate support that receives the weight of the electrode plate, and the occurrence of meandering of the electrode plate can be precisely corrected. , it is possible to prevent quality problems from occurring in the manufactured electrode plate. Along with this, there are great effects, including reductions in equipment manufacturing costs and maintenance costs after operation.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the whole roll-press equipment outline|summary which has a turret-type winding device and an unwinding device. It is a figure which shows an example of the turret type|mold winding-up apparatus of a conventional system. FIG. 4 is a diagram showing the configuration of an electrode plate on which an active material is applied in stripes; 1 is a diagram showing an example of an electrode plate winding device according to an embodiment of the present invention; FIG. 1 is a diagram showing a drum driving device according to an embodiment of the present invention; FIG. FIG. 5 is a plan view showing winding center correction due to meandering of the electrode plate and movement of the drum shaft; It is a figure which shows the movement of extracting and inserting a drum shaft from the spool which winds a coil. It is a figure which shows the movement to the next process of the coil wound from the turret type|mold winding device. FIG. 10 is a diagram showing a cylinder-driven axial movement mechanism of the turret-type winding device; FIG. 10 is a diagram showing a motor-driven axis movement mechanism that replaces the ball screw 504; It is a figure explaining the subject of the well-known example described in patent document 1. FIG.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an overall outline of a roll press device 001 for a battery electrode plate 300 equipped with a turret-type winding device or unwinding device.

The turret-type winding device and the unwinding device have the same configuration, and the turret-type winding device will be described below as an example. A winding device having multiple winding shafts and a turret so that a number of winding devices revolve around one axis is called a turret type winding device.

INDUSTRIAL APPLICABILITY The present invention is applicable to a sheet material winding device, typically to a turret-type winding device that winds a sheet material, and more typically to a sheet material that is coated in the width direction. It can be applied to a turret-type electrode plate winding device composed of an electrode plate having a coated portion and an uncoated portion.

A turret-type electrode plate winding device (hereinafter referred to as an electrode plate winding device) will be described below as an example.

The roll press device 001 is arranged in the housing 103, and rotates and compresses the electrode plate 300 unwound from the unwinding device 400 on the entry side by the press roll 101 of the roll press machine 100 to thin it to about 150 microns. sent to the output side. A dancer roll 104 and a guide roll 105 are arranged so that the electrode plate 300 is conveyed from the roll press machine 100 to the electrode plate winding device 200 with a constant tension.

The electrode plate 300 in the form of a coil 310 with a specified diameter is wound with a constant tension by the electrode plate winding device 200 . The electrode plate winding device 200 includes a revolving shaft 202 in the center, a drum shaft 203 for winding at a predetermined distance, and a turret 201 .

When the electrode plate 300 moves in the direction perpendicular to the movement direction, edge sensors 102 are arranged on the entrance side and the exit side of the roll press machine 100 in order to accurately grasp the amount of movement.

The amount of movement due to meandering in the perpendicular direction (hereinafter referred to as "meandering amount") measured by the edge sensor 102 is determined by the electrode plate winding device 200, taking into account the meandering amount of the electrode plate 300 during winding. The center is moved in a direction perpendicular to the conveying direction of the electrode plate 300 .

In this embodiment, the battery electrode plate 300 will be described by taking a lithium ion battery as a representative example.

The present invention can also be applied to electrode plate winding devices and electrode plate unwinding devices used in battery factories other than lithium ion electrode plates.

As described in Patent Document 1, a thin metal plate is generally wound on a single drum shaft. In battery manufacturing, when the wound coil 310 is pulled out from the drum shaft, the spool 204 is supported so as not to receive the weight of the coil 300 itself. Various coil winding devices have been devised, such as a mechanism capable of reliably supporting the spool 204 and shortening the time for attaching the spool 204 to the drum shaft 203 in preparation for the next winding.

FIG. 2 is a diagram showing an example of a conventional electrode plate winding device.

For comparison with the present invention, an example of a conventional electrode plate winding apparatus will be described below.

An electrode plate winding device 200 as shown in FIG. A feature of this device is that the electrode plate 300 is wound around the spool 204, the coil 310 is taken out, and the spool 204 is easily attached. Since the mechanism is the same for unwinding and winding, the electrode plate winding device 200 will be described below.

A turret 201 is provided fixedly connected to the drum shaft moving device and the drum shaft rotating drive device.

At a certain position near the roll press machine 100 , the end of the coil of the electrode plate 300 is started to be wound around the outer periphery of the spool 204 fixed to the drum shaft 203 . When the winding is nearing the end, the turret 201 is caused to revolve while winding the electrode plate 300 . Revolution means that the turret 201 rotates around the revolution axis 202 . The new spool 204 is attached to the other drum shaft 203 before revolving, waits at a position near the roll press machine 100 after revolving, and starts winding the next coil tip. By using the electrode plate winding device 200 in this manner, the electrode plate 300 can be continuously wound.

The tip of the drum shaft 203 is inserted into both ends of the spool 204 and fixed by a clamp mechanism 2031 . The length of the spool 204 is made longer than the width of the electrode plate 300 to create a portion where the electrode plate 300 is not wound on both ends of the spool 204. This portion is supported and the self weight of the electrode plate 300 is supported by the outer circumference of the coil 310. It can be carried out from the electrode plate winding device 200 without being subjected to it.

In order to continuously wind the electrode plate 300 , the conventional electrode plate winding device 200 has a turret 201 supporting two drum shafts 203 for winding, a revolving shaft 202 fixing and supporting the turret 201 , left and right two drum shafts 202 . A separator 2012 is provided for connecting and integrating the turrets 201 to form a rigid structure.

The revolving shaft 202 is provided with a bearing 211 for rotatably supporting it, and is supported via the bearing 211 on a frame 210 mounted on a sliding base 206 .

A rotating device 218 that revolves the turret 201 around the revolution shaft 202 is provided. The rotating device 218 is composed of a motor and a speed reducer and has a function of rotating the revolution shaft 202 at a slow speed.

In this example, the drum shaft moving device comprises an air cylinder 507 , a drum shaft 203 fixed to the turret 201 , a bearing case 502 and a clamping mechanism 2013 . A gap 520 is formed between the outer case 501 and the bearing case 502 .

A drum shaft rotation driving device is provided to rotate the spool 204 via the drum shaft 203 while the spool 204 and the revolving shaft 202 are fixed by the turret 201 .

The spool 204 revolves around the revolution shaft 202 while the spool 204 and the revolution shaft 202 are fixed by the turret 201 .

A linear motion bearing 209 is incorporated between the fixed base 205 and the sliding base 206 in order to move the winding center smoothly following the meandering of the electrode plate 300 .

A liquid cylinder 208 is connected to the sliding base 206, and a signal from the edge sensor 102 causes liquid to flow into the cylinder 208 that moves the sliding base 206, thereby controlling the amount of linear movement. Instead of the liquid cylinder 208, a method of controlling the amount of movement with an electric actuator may be employed.

In general, the meandering amount of the electrode plate 300 generated in the electrode plate winding device 200 is 30 mm or less. In the case of the conventional device, in order to correct this small amount of meandering, it is necessary to move the sliding base 206 on which various mechanisms necessary for winding are mounted, as shown in FIG. is bad.

Furthermore, there is a possibility that part of the active material applied to the electrode plate 300 may peel off during operation and enter the linear motion bearing 209 incorporated between the fixed base 205 and the sliding base 206, resulting in malfunction. If such a problem occurs, it is necessary to remove all the parts assembled on the sliding base 206 and clean or replace the linear motion bearing 209, requiring a lot of time for irregular maintenance of the equipment. .

FIG. 3 is a diagram showing the configuration of an electrode plate coated with an active material in stripes.
FIG. 3A is a plan view of an electrode plate 300 coated with an active material in stripes. FIG. 3(b) is a view showing a cross section of an electrode plate 300 coated with an active material in stripes.

As shown in FIG. 3A, the strip-shaped electrode plate 300 has a coated portion 302 and an uncoated portion 301 in the width direction. Therefore, when the electrode plate 300 is pressed by the press roll 101, only the thick coated portion 302 is pressed by the thickness difference between the coated portion 302 and the uncoated portion 301 as shown in FIG. Since the thin uncoated portion 301 is stretched and does not stretch, uneven waves are generated in the thick coated portion 302 . In order to reduce uneven waves, it is necessary to pull the electrode plate 300 toward the delivery side with a high tension, resulting in a larger winding force. Since the electrode plate winding device 200 needs to wind the electrode plate 300 with a strong torque, the linear motion bearing 209 needs not only the weight of the device itself but also a force to counter the torque. A large linear motion bearing 209 to withstand this force and the weight of the equipment must be incorporated between the fixed base 205 and the sliding base 206 . Although the conventional electrode plate winding device 200 has many advantages over the uniaxial fixed type winding device, it also has problems to be solved.

FIG. 4 is a diagram showing an example of an electrode plate winding device according to an embodiment of the present invention.

An electrode plate winding device 200 is constructed that does not require a sliding base.

FIG. 5 is a diagram showing a motorized axis movement mechanism incorporated within the drum drive mechanism.

4 and 5, an electrode plate winding device 200 that does not require the sliding base 206 and linear motion bearing 209 required in the conventional device will be described.

A turret 201 is provided, and a drum shaft driving device 500 and a rotation driving device 218 are fixedly connected to the turret 201 .

A drum shaft 203 and a drum rotation drive motor 207 are attached to the turret 201 . Instead of attaching the revolving shaft 202, turret 201, and pedestal 210 to the fixed base 205 via the sliding base linear motion bearing 209 as in the conventional device, the revolving shaft 202, turret 201, and pedestal 210 are directly attached to the fixed base 205. fixed to

The drum shaft driving device 500 attached to the turret 201 is provided with a shaft moving mechanism capable of moving the drum shaft 203 in the axial direction while rotating, and the electrode plate center of the electrode plate 300 and the winding center are aligned. I do.

The same meandering control effect as when the sliding base 206 of the conventional apparatus is moved is obtained by the operation of the axis moving mechanism that employs a structure in which the revolving shaft 202, turret 201, and pedestal 210 are directly fixed to the fixed base 205. This eliminates the need for the sliding base 206 and linear motion bearing 209 of the conventional device. The sliding base 206 is no longer required.

A fixed base 205 is firmly fixed to the foundation. The mount 210 may be directly fixed to the foundation without using the fixed base 205 .

The edge sensor 102 measures the edge of the electrode plate 300, sends data to the controller 219, and detects the meandering amount. A correction movement amount of the drum shaft 203 in the axial direction is calculated by the controller 219 from the meandering amount. The electrode plate winding device 200 is moved corresponding to the correction movement amount.

When the drum rotation driving motor 207 is attached to the turret 201 and revolves together with the turret, power is supplied via a power slip ring 216 attached to the revolution shaft 202 in order to supply motor driving power. The power received by the power slip ring 216 is sent to the switchboard 214 arranged in a part of the turret 201 .

Electric devices for controlling the drum rotation drive motor 207 and the drum shaft movement motor 505 are arranged in the switchboard 214 . Since the electrical equipment rotates together with the turret 201, control signals cannot be transmitted by fixed lines. A signal slip ring 215 is arranged at the end of the revolution shaft 202 to transmit a control signal from the control device 219 to the switchboard 214 .

A drum shaft moving means having a drum drive source is fixed to the drum shaft to enable axial movement of the drum shaft.

FIG. 5 is a diagram showing a drum driving device according to an embodiment of the present invention.

A shaft moving device and a drum shaft rotating device that constitute the drum driving device 500 will be described with reference to FIG.

A shaft moving device and a drum shaft rotating device are incorporated inside an outer case 501 of the drum driving device 500 .

Devices that are provided in the conventional device shown in FIG. 2 and that are also provided in this embodiment are illustrated with the same numbers.

FIG. 5 shows an example in which the drum driving mechanisms 500 are arranged vertically.

The drum shaft moving device includes an outer case 501 and a shaft moving motor 505. A shaft case 502 rotatably supports the winding drum shaft 203 via bearings. It consists of sliding rails 503 which are axially movable.

The shaft case 502 further incorporates a ball screw 504 that allows the shaft case 502 to move in the axial direction. The shaft case 502 and the drum shaft 203 are composed of a linear motion mechanism that moves back and forth on the slide rail 503 together.

The drum shaft rotation device includes a drum rotation drive motor 207 which is a rotation drive device for rotating the drum, a pulley shaft 514 , and a belt 508 connecting the drum rotation drive motor 207 and the pulley shaft 514 . It comprises a spline shaft 509, a belt 508 connecting the drum rotation drive motor 207 and the spline shaft 509, an idle shaft 512 provided on the spline shaft, a bearing 513, and a belt 510 for transmitting the rotational force of the idle shaft to the drum shaft. be done.

Since both the drum shaft 203 and the drum rotation driving motor 207 are attached to the turret 201, the length of the belt 510 required for transmitting the rotation force is shortened compared to the conventional one.

In the case of the conventional electrode plate take-up 200, since the drum rotation drive motor 207 is arranged near the sliding base 206, belts 212 and 213 are arranged to transmit the rotational force from the rotating turret 201 to the drum shaft 203. and transmitted via the revolution axis 202.

In the present embodiment, such a via structure is not required, the driving system of the drum shaft 203 can be greatly simplified, damage to the belt can be avoided, and the reliability of the equipment can be greatly improved.

A drum shaft 203 for winding the electrode plate 300 and a shaft moving mechanism are arranged in opposite directions to the left and right turrets 201 , and the rotating force of the motor is used as a moving force in the axial direction of the drum in at least one side of the shaft moving mechanism. The drum shaft 203 can be moved to any axial position by providing a linear motion mechanism to replace the drum shaft 203 and instructing the shaft moving motor 505 about the value of the rotation direction and the rotation angle.

A clamp mechanism 2031 for clamping the spool 204 from the inside is incorporated at the tip of the drum shaft 203 , and an air cylinder 507 for moving the clamp mechanism 2031 is attached to the drum shaft 203 on the opposite side of the clamp mechanism 2031 . The axial force of the air cylinder 507 moves the link mechanism in the clamping mechanism 2031 , expanding the outer diameter of the clamping mechanism 2031 and making strong contact with the inner diameter side of the spool 204 .

By means of the drum shaft moving mechanism, the movement of the drum shaft 203 in the axial direction corresponding to the meandering of the electrode plate 300 and the movement of the winding drum shaft 203 when the spool 204 is attached or detached are moved in the same direction, so that the two movements are combined into one straight line. It can be done by a dynamic operation mechanism.

A shaft case 502 moving mechanism that replaces the ball screw 504 will be described with reference to FIG.

A rack 515 is attached to the side of the shaft case 502 in parallel with the slide rail 503 . The rotational force of the shaft moving motor 505 is transmitted to the rack 515 via the pinion 516 . The shaft case 502 to which the rack 515 is attached by the rotation of the pinion 516 also constitutes a linear motion mechanism in which the shaft case 502 and the drum shaft 203 move back and forth on the slide rail 503 together according to the rotation direction of the pinion 516 .

Performing the above two motions with one linear motion mechanism will be described below with reference to FIG.

FIG. 6 is a plan view illustrating a method of correcting the winding center by moving the drum shaft 203 in the axial direction according to the present invention when meandering of the electrode plate 300 occurs.

As shown in FIG. 6, the meandering control corresponding to the meandering of the electrode plate 300 moves the drum shaft 203 so that the electrode plate center and the winding center coincide with each other. An edge sensor 102 installed on the entrance side of the electrode plate winding device 200 measures the edge of the electrode plate 300, sends data to the control device 219, and detects the amount of meandering. A correction movement amount of the drum shaft 203 in the axial direction is calculated by the controller 219 from the detected deviation of the electrode plate center. Corresponding to the commanded movement direction and movement amount, the shaft movement motor 505 rotates to the designated rotation direction and rotation angle, and moves the shaft case 502 and the drum shaft 203 to the target position via the ball screw 504. . When the left and right turret plates 201 have shaft movement motors 505, the left and right drum shafts 203 and the spools 204 move in the same direction to align the electrode plate center and the winding center.

7A and 7B show how the drum shaft 203 is removed from and inserted into the spool 204 around which the coil 310 is wound.

As shown in FIG. 7, the drum shaft 203 uses the spool 204 as the core of the coil 310 to coil the electrode plate 300 . Since the spool 204 is rotated by the drum shaft 203 , it is necessary to insert the clamp mechanism 2031 at the tip of the drum shaft 203 into the inner diameter of the spool 204 . FIG. 7A shows the state before the drum shaft 203 is inserted into the spool 204. FIG. FIG. 7B shows the state after the drum shaft 203 is inserted into the spool 204. FIG.

Movement from FIG. 7A to FIG. 7B is similar to the meandering control, the axis movement motor 505 rotates up to the designated rotation direction and rotation angle, and the ball screw 504 rotates the shaft case 502 and the drum shaft. 203 is moved axially. After the left and right drum shafts 203 are inserted into the spool 204, the outer diameter of the clamp mechanism 2031 at the tip of the drum shaft 203 is expanded by the force of the air cylinder 507, and the inner diameter side of the spool 204 is fixed to integrate the drum shaft 203 and the spool 204. do.

Other than the method of inserting the clamp mechanism 2031 into the spool 204, the method of attaching and detaching the spool 204 is not limited. . Any attachment/detachment method can move the drum shaft 203 in the axial direction.

When pulling out the clamp mechanism 2031 from the inner diameter of the spool 204, the clamp mechanism 2031 is contracted by the air cylinder 507 to create a gap between the inner diameter of the spool 204 and the outer diameter of the clamp mechanism. Next, the shaft moving motor 505 rotates to move the clamping mechanism 2031 to the outside of both ends of the spool 204 and extract the drum shaft 203 from the spool 204 . In this manner, the motion of aligning the winding center and the electrode plate center and the motion of attaching and detaching the drum shaft 203 to and from the spool 204 for meander control are performed by the shaft moving motor 505 and the ball screw 504 .

As described above, the drum shaft 203 for winding the electrode plate 300 as a battery material is incorporated in the turret 201 attached to one revolving shaft 202, the turret 201 is revolved, and the two drum shafts 203 are alternately rotated. In the turret-type winding device 200 that enables continuous winding using a drum shaft 203, the electrode plate center and the winding center are aligned in response to the meandering of the electrode plate 300, and the spool 204 is rotated by the drum shaft 203. By using the axial movement mechanism of the drum shaft arranged on the turret 201 for the two different purposes of attaching and detaching, there is no need to move the turret 201 and the revolving shaft 202 together in the axial direction.

The drum shaft moving mechanism controls the meandering of the electrode plate 300 and inserts and pulls out the drum shaft 203 from the spool 204 by controlling the rotation angle, rotation speed, and rotation direction of the shaft moving motor 505 according to commands from the controller 219. It can be achieved by one mechanism by controlling. By using an AC servomotor for the axis movement motor 505, it is possible to easily achieve high positioning accuracy.

As shown in FIG. 7, a drum shaft moving means having a drum drive source is fixed to the drum shaft so that the drum shaft can be moved in the axial direction,
An attachment/detachment means is provided for attaching/detaching between the drum shaft and the spool by moving the drum shaft in the axial direction,
By moving the first drum shaft in the axial direction by the drum shaft moving means, attachment and detachment between the drum shaft and the spool are performed,
When the drum shaft and the spool are in a fixed state by the attachment/detachment means and meandering occurs in the sheet material, the second drum shaft is moved in the axial direction by the drum shaft moving means while maintaining the fixed state. The drum shaft is moved axially so that the drum shaft can move in a direction in which the winding center of the sheet material winding device coincides with the sheet material center.
Further, a drum shaft moving means is provided to enable axial movement of the drum shaft,
coupling the turret to the drum shaft in a rotationally constrained manner and unconstrained against axial movement of the drum shaft;
When the drum shaft and the spool are fixed by the attachment/detachment means and meandering occurs in the sheet material, the drum shaft is moved in the axial direction while the restriction on the axial movement of the turret is maintained. A shaft is operable to align the winding center of the sheet material winding device with the sheet material center.

Equipped with a sensor that detects meandering of the electrode plate, inputs the detected meandering amount, calculates and sets the movement amount of the drum shaft based on the input meandering amount, and adjusts the movement of the axis moving device based on the calculated and set movement amount. with a controller that
The drum shaft driving device acquires the calculated and set movement amount from the control device, and the drum shaft moving device operates in a direction in which the winding center of the sheet material winding device coincides with the sheet material center of the sheet material. can be done.

FIG. 8 is a diagram showing a method of moving the coil 310 wound from the turret-type winding device 200 to the next process.

As shown in FIG. 8, in order to move the wound coil 310 to the next process, the turret-type winding device 200 uses a rotary drive device 218 that revolves the turret 201 to position the coil 310 in an easy-to-handle position. rotate until it stops. Using a delivery device 601 that facilitates transporting the wound coil 310 to the next process, the coil 310 is swiveled in the delivery side direction while supporting the spool 204 portions protruding from both outsides of the coil 310 from below. Next, the sheet is received from the delivery device 601 by a self-propelled conveying machine 600 such as a forklift and conveyed to the next process.

Next, returning to FIG. 5, the rotation driving device for the winding drum shaft 203 will be described.

A drum shaft 203 for winding the electrode plate 300 and a drum driving motor 207 are arranged on the turret 201 . The rotational force of drum drive motor 207 is transmitted to pulley shaft 514 via belt 508 , pulley shaft 514 and spline shaft 509 are connected by a coupling, and the rotational force of drum drive motor 207 is transmitted to spline shaft 509 . The idle shaft 512 and the spline shaft 509 are connected via a spline, and the motor rotation torque is transmitted to the drum shaft 203 by the drum shaft 203, the idle shaft 512 having the spline, and the belt 510 connecting the two shafts. . The idle shaft 512 is rotatably supported by the shaft case 502 via bearings 513 . Using the slide function between the spline shaft 509 and the idle shaft 512, the drum shaft 203 is continuously rotated by the driving force of the drum driving motor 207, and at the same time, the shaft moving motor 505 supports the winding drum shaft 203. 502 is configured to be movable on the slide rail 503 in the direction of the drum shaft 203 .

A drum shaft 203 for winding the electrode plate 300 and a drum drive motor 207 for rotating the drum shaft 203 are arranged on the turret 201, and an idle shaft 512 having a spline is arranged between the drum shaft 203 and the drum drive motor 207, A means is provided for allowing the drum shaft 203 to move in the axial direction while the drum shaft 203 is continuously rotated by the driving force of the motor.

FIG. 9 is a diagram showing a cylinder-driven shaft movement mechanism incorporated within the drum drive mechanism.

In the above description, it has been described that the axis movement mechanism has the axis movement motors 505 arranged on the left and right sides to control the axis movement of the drum shaft 203 . A mechanism in which the shaft movement motor 505 is arranged only on the drum shaft 203 on one side and the drum shaft on the other side is moved by the air cylinder 511 will be described with reference to FIG.

The air cylinder 511 side moves the shaft case 502 on the slide rail 503 by simply pushing and pulling the air cylinder 511 , and inserts the clamp mechanism 2031 at the tip of the drum shaft 203 into the spool 204 . Also, the air cylinder 511 is moved in the opposite direction to extract the clamp mechanism 2031 at the tip of the drum shaft 203 from the spool 204 . A rack 515 is attached to the shaft case 502 to transmit the position to a rotation sensor 517 via a pinion 516 that meshes with the rack 515 in order to always check the axial position of the tip of the drum shaft 203 . A position signal from the rotation sensor 517 is transmitted to the control device 219 .

On the other hand, the clamp mechanism 2031 at the tip of the drum shaft 203 on the side where the shaft movement motor 505 is arranged is inserted into the spool 204 and stopped at an accurate position by a control signal. The clamp mechanism 2031 at the tip of the drum shaft 203 on the air cylinder 511 side is inserted into the spool 204 .

The pressing force of the air cylinder 511 always lightly presses the drum shaft 203 on the opposite side via the spool 204, and the two drum shafts 203 and the spool 204 always move axially together. The clamping mechanism 2013 for the spool 204 of the drum shaft 203 is not limited to the clamping mechanism shown in FIG. 5, and other means may be used.

In this manner, by providing the axis movement motor 505 only in one axis movement mechanism and accurately controlling the positions of the left and right drum shafts 203, meandering control can be performed.

The drum shaft moving means comprises a shaft moving motor and a converting means for converting a rotational driving force from the shaft moving motor into an axial linear force, and the attachment/detachment means is a clamping mechanism for disengaging from the spool; It is characterized by being configured with an air drive device that operates the clamping mechanism.

The drum shaft rotating means comprises a rotating driving means for rotating the drum shaft, a spline shaft rotated by the rotating driving means, an idle shaft provided on the spline shaft, and provided between the idle shaft and the drum shaft. It is characterized in that it is equipped with a belt and that a sliding means is provided between the drum shaft and the turret.

As explained above,
The present invention includes an electrode plate in which the sheet material has a coated portion and an uncoated portion in the width direction,
A drum shaft moving means having a drum drive source is fixed to the drum shaft so that the drum shaft can be moved in the axial direction,
An attachment/detachment means is provided for attaching/detaching between the drum shaft and the spool by moving the drum shaft in the axial direction,
The drum shaft moving means moves in the axial direction of the first drum shaft, and the attachment/detachment means attaches and detaches between the drum shaft and the spool,
When the drum shaft and the spool are in a fixed state by the attaching/detaching means, and the sheet material is meandering, the second drum shaft is moved in the axial direction by the drum shaft moving means while maintaining the fixed state. The drum shaft is moved in the axial direction, and the drum shaft moves in the direction in which the winding center of the sheet material winding device coincides with the sheet material center.

"Fixing the drum shaft moving means having the drum drive source to the drum shaft" means to directly provide the drum shaft to the drum shaft moving means having the drum drive source.

The present invention further provides drum shaft moving means to enable axial movement of the drum shaft,
coupling the turret to the drum shaft in a rotationally constrained manner and unconstrained against axial movement of the drum shaft;
When the drum shaft and the spool are fixed by the attachment/detachment means and meandering occurs in the sheet material, the drum shaft is moved in the axial direction while the restriction on the axial movement of the turret is maintained. The shaft is characterized in that it moves the winding center of the sheet material winding device in a direction coinciding with the sheet material center.

In the above description, a typical example of an unconstrained coupling is axially free, eg slidingly unfixed, but rotationally fixed.

The turret is connected to the drum shaft in a rotationally constrained manner and is unconstrained with respect to axial movement of the drum shaft; and indirectly connected to the drum shaft.

Therefore, the drum shaft is directly provided with the drum shaft moving means having the drum driving source, and the rotation driving means is indirectly connected to the drum shaft through an intervening member, so that when the drum shaft moving means is moved, , the rotary drive means are fixed in axial position and allowed to rotate in the rotational direction.

Operating the winding center of the sheet material winding device in a direction aligned with the sheet material center includes the winding center of the sheet material winding device being aligned with the sheet material center.

FIG. 3 shows that the meandering amount of the electrode plate 300 generally generated at the winding device 200 is 30 mm or less.

As a method for solving the problem of winding and unwinding the electrode plate by the electrode plate winding method or the electrode plate unwinding method, the inventors have developed a coil 310 without using the sliding base 206 and the linear motion bearing 209. It was considered to move the supporting winding drum shaft 203 in the axial direction to control meandering.

As described above, the winding drum shaft 203 moves left and right following the meandering motion, and means for performing winding control so that the electrode plate 300 is correctly wound is adopted, and the problem is solved by the following invention.

The sheet material is an electrode plate having a coated part and an uncoated part in the width direction,
A drum shaft connected to a spool for winding a sheet material, shaft rotating means for rotating the drum shaft, and shaft moving means for moving the drum shaft in the axial direction,
A drum shaft moving means is provided to enable axial movement of the drum shaft,
An attachment/detachment means is provided for attaching/detaching between the drum shaft and the spool by moving the drum shaft in the axial direction,
Equipped with measuring means for measuring meandering of the electrode plate,
Equipped with a control device that corresponds to the measured meandering amount of the electrode plate and controls the movement and adjustment of the spool in the axial direction,
The present invention relates to an electrode plate winding method using an electrode plate winding device for winding an electrode plate or an electrode plate unwinding method using an electrode plate unwinding device for winding an electrode plate.

By moving the first drum shaft in the axial direction, attachment and detachment between the drum shaft and the spool are performed,
When the drum shaft and the spool are in a fixed state by the attachment/detachment means and the sheet material is meandering, the second drum shaft is moved in the axial direction to maintain the fixed state and move the drum shaft in the axial direction. A moving operation is performed, and the spool is moved in a direction that coincides with the center of the sheet material within a range of 30 mm.
Further, the drum shaft connected to the spool for winding the sheet material, the shaft rotating means for rotating the drum shaft, the attachment/detachment means for attaching and detaching between the drum shaft and the spool, the revolving shaft arranged in parallel with the drum shaft, and the drum A turret that connects the shaft and the revolution axis is provided between the two, and the turret and the spool are revolved around the revolution axis,
A drum shaft moving means is provided to enable axial movement of the drum shaft,
coupling the turret to the drum shaft in a rotationally constrained manner and unconstrained against axial movement of the drum shaft;
Equipped with a measuring means for measuring the meandering of the electrode plate, and a control device for adjusting and controlling the movement of the spool in the axial direction corresponding to the measured meandering amount of the electrode plate,
The present invention relates to an electrode plate winding method using an electrode plate winding device for winding an electrode plate or an electrode plate unwinding method using an electrode plate unwinding device for winding an electrode plate.

The control device inputs the measured meandering amount, calculates and sets the movement adjustment amount of the drum shaft based on the input meandering amount,
When the drum shaft and the spool are fixed by the attachment/detachment means and the sheet material is meandering, the drum shaft is moved in the axial direction while maintaining the fixed state. , the spool is operated in a direction coinciding with the sheet material center within a range of 30 mm.

In the above description, the turret type winding device 200 has been described. Unwinding can be performed. In addition, many facilities for manufacturing batteries are required to have a function similar to the winding and unwinding of the electrode plate 300 of a roll press machine. Turret-type winding and unwinding devices used in equipment associated with battery manufacturing are within the scope of the present invention.

001 Roll press device 100 Roll press machine 101 Press roll 102 Edge sensor 105 Guide roll 200 Turret type winding device (electrode plate winding device) 201 Turret plate (turret) 202 Revolving shaft 203 Drum shaft 2031 Clamping mechanism 204 Spool 205 Fixed base 206 Sliding base 207 Drum shaft rotation drive motor 209 Linear bearing 210 Base 211 Bearing 214 Switchboard 215 Signal slip ring 216 Electric power slip ring 218 Rotation drive device (rotation drive means) 219 Control device 300 Electrode plate 310 Coil 400 Unwinding device , 500... Drum driving device (drum driving means) 501... External case 502... Shaft case 503... Slide rail 504... Ball screw 505... Drum axis movement motor 506... Belt 507... Air cylinder 508... Belt 509 Spline shaft 510 Belt 511 Air cylinder 512 Idle shaft 513 Bearing 514 Pulley shaft 515 Rack 516 Pinion 517 Rotation sensor 600 Conveying device 601 delivery device.

Claims (9)

A spool for winding the sheet material, a drum shaft connected to the spool, a drum shaft rotating means for rotating the drum shaft, an attaching/detaching means for attaching/detaching between the drum shaft and the spool, and arranged parallel to the drum shaft. and a turret connecting the drum shaft and the revolving shaft, wherein the turret and the spool revolve around the revolving shaft,
The drum shaft is provided with a drum shaft moving means having a drum drive source so that the drum shaft can be moved in the axial direction with respect to the drum drive source,
The drum shaft rotation means comprises a rotation drive means attached to the turret for rotating the drum shaft, a spline shaft rotated by the rotation drive means, an idle shaft provided on the spline shaft, and the idle shaft and the drum shaft. It is configured with a belt provided between
While the drum shaft is connected to the spool and rotates, the drum shaft is moved in the drum shaft direction by the drum shaft moving means.
A sheet material winding device characterized by: A spool for unwinding the sheet material, a drum shaft connected to the spool, a drum shaft rotating means for rotating the drum shaft, an attaching/detaching means for attaching/detaching between the drum shaft and the spool, and arranged parallel to the drum shaft. A sheet material unwinding device comprising a revolving shaft and a turret connecting the drum shaft and the revolving shaft, wherein the turret and the spool revolve around the revolving shaft,
The drum shaft is provided with a drum shaft moving means having a drum drive source so that the drum shaft can be moved in the axial direction with respect to the drum drive source,
The drum shaft rotation means comprises a rotation drive means attached to the turret for rotating the drum shaft, a spline shaft rotated by the rotation drive means, an idle shaft provided on the spline shaft, and the idle shaft and the drum shaft. It is configured with a belt provided between
While the drum shaft is connected to the spool and rotates, the drum shaft is moved in the drum shaft direction by the drum shaft moving means.
A sheet material unwinding device characterized by. In the sheet material winding device according to claim 1 or the sheet material unwinding device according to claim 2,
The sheet material is an electrode plate having a coated part and an uncoated part in the width direction,
The drum shaft is connected to the spool, and while rotating, the drum shaft is moved in the drum shaft direction by the drum shaft moving means.
A sheet material winding device or a sheet material unwinding device characterized by In the sheet material winding device according to claim 1 or the sheet material unwinding device according to claim 2,
A sheet material winding device or a sheet material unwinding device , characterized in that a sliding means is provided between a drum shaft and a turret. In the sheet material winding device according to claim 1,
A spool, a drum shaft, a drum shaft rotating means and an attaching/detaching means are provided on the left and right sides of the sheet material winding device,
By both drum shaft moving means , each drum shaft is moved in the axial direction to insert the tip of the drum shaft into each spool, and each fixed state between the two drum shafts and the two spools is changed by each attachment/detachment means. form,
In addition, both drum shaft moving means move each drum shaft in the axial direction to move the winding center of the sheet material winding device toward the sheet material center.
A sheet material winding device characterized by: In the sheet material winding device according to claim 1 or the sheet material unwinding device according to claim 2,
The drum shaft moving means includes a shaft moving motor and conversion means for converting a rotational driving force from the shaft moving motor into an axial linear force, and the attachment/detachment means is positioned on the inner diameter side of the spool with an enlarged outer shape. A sheet material winding device or a sheet material unwinding device, characterized in that it comprises a clamping mechanism that contacts with and an air driving device that operates the clamping mechanism . In the sheet material winding device according to claim 1,
Equipped with a sensor that detects meandering of the sheet material or electrode plate, inputs the detected meandering amount, calculates and sets the movement amount of the drum shaft based on the input meandering amount, and moves the drum axis based on the calculated and set movement amount. comprising a controller for regulating the movement of the means;
The drum shaft moving means acquires the calculated and set movement amount, moves the drum shaft in the axial direction, and moves the winding center of the sheet material winding device toward the sheet material center.
A sheet material winding device characterized by: In the sheet material winding method by the sheet material winding device for winding the sheet material according to claim 1,
The drum shaft connected to the spool is rotated and moved in the axial direction by the drum shaft moving means to move the winding center of the sheet material winding device toward the sheet material center.
A sheet material winding method using a sheet material winding device for winding a sheet material characterized by : In the sheet material winding method by the sheet material winding device for winding the sheet material according to claim 1,
The sheet material is an electrode plate having a coated part and an uncoated part in the width direction,
The drum shaft connected to the spool is rotated and moved in the axial direction by the drum shaft moving means to move the winding center of the sheet material winding device toward the sheet material center.
A sheet material winding method using a sheet material winding device for winding a sheet material characterized by.

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