JPH1159993A - Sheet body continuous feeding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold a distance from a joint part to a cut-off part constant and as short as possible when a first sheet body conveyed from an old roll is joined to a starting end of a new roll and then, cut off for continuous feeding. SOLUTION: This device is a device that the neighborhood of a terminating end of a sheet 4a of an old roll 4 is pressure welded by a nip roller 8 to a joint part of a starting end of a sheet of a new roll 6 for continuous feeding of a sheet body, and a guide roller 12 and a cutter 16 for cutting off the sheet 4a are provided at a supporting member 9 for supporting the nip roller 8. The cutter 15 cuts off the sheet between the nip roller 8 and the guide roller 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, a process for manufacturing a battery using a roll of metal foil as an electrode.
The present invention relates to a continuous sheet feeding apparatus for continuously feeding a sheet from a plurality of sheet rolls.

[0002]

2. Description of the Related Art Conventionally, in a manufacturing process of a battery using a wound body of a metal foil as an electrode, a sheet roll wound with a sheet body serving as an electrode material forming the wound body is used.
2. Description of the Related Art A continuous sheet feeding apparatus that feeds a sheet and sends the sheet to a next step such as an active material application step or a cutting step is used.

[0005] As shown in FIG. 3, the continuous sheet feeding apparatus is configured such that when a first sheet 102 supplied from a first sheet roll 101, which is an old roll, approaches a terminal end, By joining the vicinity of the end of the first sheet member 102 to the start end of the second sheet member wound as the second sheet member roll 103, which is a new roll, a plurality of sheet members are continuously formed one after another. There has been proposed a device capable of supplying the same to a device.

In this continuous sheet feeding apparatus, first and second sheet rolls 101 and 103 are rotatably supported by support shafts 104 and 105, respectively. In such a continuous sheet feeding apparatus, the second
The sheet roll 103 is provided with a bonding portion in which an adhesive or the like is adhered to the start end of the second sheet on the outer peripheral surface, and is rotated. This second sheet roll 103
The rotation speed of the first sheet member 1 whose linear velocity on the outer peripheral surface is supplied and conveyed from the first sheet member roll 101 is
02 is controlled to be equal to the transport speed. Then, the vicinity of the end of the first sheet body 102 is guided by the guide roller 110, and then pressed against a joining portion on the outer peripheral surface of the second sheet body roll 103. The operation is performed by a nip roller 106 which can be moved toward and away from the second sheet roll 103. In this continuous sheet feeding apparatus, the pressing of the first sheet 102 by the nip roller 106 against the second sheet is performed by moving the position corresponding to the nip roller 106 to the second position.
Before the first end of the sheet body passes. Then, when the starting end of the second sheet body passes through the position corresponding to the nip roller 106, the joining of the first sheet body 102 to the second sheet is completed. The second sheet body follows the vicinity of the end of the first sheet body 102 and is pulled out from the second sheet body roll 103 and supplied. At this time, the first sheet member 102 is located behind the portion joined to the second sheet member,
Is cut by the cutter 107 in the vicinity of.

[0005] The end portion of the second sheet member is, like the end portion of the first sheet member 102, the third sheet member wound as a third sheet member roll, which is the next new roll. In the vicinity of the start end. In this way, the next sheet body is sequentially joined and supplied, and a continuous sheet body is supplied.

[0006]

By the way, in the continuous supply of the sheet by the continuous sheet supply apparatus as described above, as shown in FIG. 4, the first sheet 102 is transferred to the second sheet 108. From the joined portion of the first sheet member 102 to the cut end portion of the first sheet member 102.
It says nine. When the length of the tail portion 109, that is, the tail length is increased, the tail portion 109 may be caught by a guide roller or the like while the sheet body is transported to the next step such as application of the active material. for that reason,
The tail length should be as short as possible.

[0007] However, the tail length changes due to the difference in the outer diameter of the second sheet roll 103. This is because when the outer diameter of the second sheet roll 103 changes, when the cutter 107 cuts the first sheet 102, the support shaft 105 and the nip roller 106 that support the second sheet roll 103 move. Because the distance changes,
This is because the distance between the nip roller 106 and the cutter 107 changes. For example, the outer diameter of the sheet roll has a width of about 90 mm to 500, and in this case, the distance between the joining position by the nip roller 106 and the cutting position by the cutter 107 is about 300 mm.
Or about 440 mm. Therefore, it is difficult to control such that the tail length is maintained at a sufficiently short length.

For this reason, conventionally, as shown in FIG.
Adhesives 111a, 1 are provided at two places on second sheet 108.
11b, the adhesive 1 on the rear side in the transport direction
11b is used for tail length adjustment. As described above, the adhesive 111 is provided at two places on the second sheet body 108.
As shown in FIG. 6, the first and second sheets 108a and 111b are adhered to each other around the start end of the second sheet body 108 and around the outer periphery of the second sheet roll 103 from the start end. The adhesive is applied to the positions where

However, even if the adhesive is provided at two places in this manner, it is difficult to accurately control the tail length, and the work of providing the adhesive at two places is complicated.

Therefore, the present invention has been proposed in view of the above-mentioned circumstances, and has been proposed in which the first sheet body being conveyed is joined to the drawing start end of the second sheet body roll. The continuous sheet feeding device is capable of continuously pulling out the sheet material, and the tail length from the joint portion to the cutting portion of the first sheet body behind the joint portion can be controlled to be sufficiently short. An object of the present invention is to provide a continuous sheet feeding apparatus.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems and to achieve the object, a continuous sheet feeding apparatus according to the present invention comprises a first sheet roll pulled out from a first sheet roll and conveyed. The second sheet roll is rotated by synchronizing the linear velocity of the outer peripheral surface with the transport speed of the body, and the first sheet body is joined to the start end portion of the second sheet body on which the adhesive is applied. A continuous sheet supply apparatus for continuously supplying the first and second sheet members, wherein the first sheet member supported and conveyed by a support member is brought into contact with the outer peripheral surface of a second sheet member roll. A nip roller to be driven, a guide roller supported by the same support member as the nip roller, and contacting the first sheet body on the rear side of the nip roller in the transport direction of the first sheet body, and a support portion identical to the nip roller And it is characterized in that it comprises a cutter for cutting the first sheet member at a position between the supported nip roller and the guide roller by.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the continuous sheet feeding apparatus according to the present invention has a turret arm 2 rotatably supported via a turret shaft 1. A first sheet roll 4 is rotatably supported at one end of the turret arm 2 via a first support shaft 3 serving as a first rotation support portion supported by the turret arm 2. You.
A first support shaft 3 is provided on the other end of the turret arm 2.
The second sheet roll 6 is rotatably supported via a second support shaft 5 serving as a second rotation support portion parallel to the second roll.
The turret arm 2 can be rotated intermittently at angular positions of every 180 °.

The sheet member forming each of the sheet member rolls 4 and 6 is a sheet member made of a metal material such as copper or aluminum as an electrode material forming a wound electrode member of a secondary battery,
It is supplied from each of the sheet rolls 4 and 6, and is conveyed to the next step such as an active material application step and a cutting step. The thickness of the sheet is about 10 μm to 15 μm.

The first sheet roll 4 is an old roll that supplies the sheet 4a prior to the second sheet roll 6, whereas the second sheet roll 6 is an unused new roll. Becomes That is, the first sheet roll 4
The first sheet body 4a forming the second sheet body roll 6
The sheet is pulled out before being conveyed to the next step before the second sheet member.

The first sheet roll 4 is rotated as shown by an arrow A in FIG. 1 when the first sheet 4a is pulled out. The first sheet member 4a includes a plurality of guide rollers 17, 1 provided on the turret arm 2.
8 and further through a plurality of dancer rolls 19, 20, 21 for adjusting the tension, as shown by the arrow B in FIG.

The second sheet roll 6 is rotated by a speed-up roller 7 serving as a rotation operating means in the same direction as the rotation direction of the first sheet roll 4 as shown by an arrow C in FIG. The rotation operation is performed in a direction to supply a certain second sheet body to the next process. The speed-up roller 7
The rotatable support arm is rotatably supported on the distal end side, and can be moved toward and away from the second sheet roll 6. The speed-up roller 7 is rotated by a driving device such as a motor (not shown).
When the speed-up roller 7 is being rotated by the driving device, the speed-up roller 7 is rotated on the outer peripheral surface of the second sheet roll 6 to rotate the second sheet roll 6.

In the vicinity of the second sheet roll 6, a nip roller 8 is disposed at a position sandwiching the conveyance path of the first sheet 4a in cooperation with the second sheet roll 6. Has been established. The nip roller 8 is used for the support shaft 1.
A base end side is rotatably disposed on an arm 11 supported by the support member 9 via the reference numeral 0. This arm 11
Is movably supported by a support member 9 via a support shaft 10. The arm 11 is moved on the support member 9 by an air-air cylinder. Arm 11
Is moved, the nip roller 8 moves to the second support shaft 5.
Is moved in the direction of approaching and separating from. That is, the nip roller 8 is operated to move from a position in contact with the outer peripheral surface of the second sheet roll 6 to a position apart from the outer peripheral surface of the second sheet roll 6.

On the support member 9, a guide roller 12, which is moved in the direction of contacting and separating from the second support shaft 5 in synchronization with the nip roller 8, is rotatably disposed via a support shaft 13. . The guide roller 12 is located behind the nip roller 8 in the transport direction of the first sheet member 4a. A pivot arm 14 having a cutter 16 attached to the distal end side is rotatably attached to a support shaft 13 that supports the guide roller 12. The turning arm 14 is turned around the support shaft 13 by the air cylinder 15. The cutter 16 directs the blade portion to the first sheet body 4a being conveyed, and the guide roller 12
When the rotating arm 14 is rotated after being moved to the side, the first sheet body 4a being conveyed is moved.
At a position between the nip roller 8 and the guide roller 12, cutting is performed over the entire width.

In the continuous sheet feeding apparatus configured as described above, the conveyance of the first sheet 4a to the next process proceeds, and the remaining of the first sheet 4a on the first sheet roll 4 is removed. Is smaller, the first sheet 4
The joining of the terminal end portion of a to the start end portion of the second sheet body is performed.

That is, when the remaining amount of the first sheet member 4a in the first sheet member roll 4 becomes equal to or less than a predetermined amount, the nip roller 8 operates as shown in FIG. As shown by, the first sheet member 4a is pressed against the outer peripheral surface of the second sheet member roll 6. At this time, the second sheet roll 6 is rotated by the speed-up roller 7 so that the linear velocity of the outer peripheral surface portion matches the transport speed of the first sheet 4a. At this time, the guide roller 12 comes into contact with the conveyed first sheet body 4a at a position on the rear side of the nip roller 8. Therefore, at this time, after being guided by the guide roller 12, the first sheet member 4a passes between the nip roller 8 and the second sheet member roll 6, and is conveyed to the next step.

The first sheet body 4a pressed against the outer peripheral surface of the second sheet body roll 6 is
Is joined to a joint provided at the start end of the second sheet member on the outer peripheral surface of the second sheet member. In this joint, an adhesive is applied to the outer surface of the start end of the second sheet member. The second sheet is joined at the joining portion to the first sheet 4a, so that the starting end is pulled out, and the conveyance is started following the first sheet 4a. Then, the first sheet body 4a is cut by the cutter 16 at a position immediately after the joining portion to the joining portion. In this way, continuous conveyance is performed to the next step in a state where the end portion of the first sheet member 4a and the start end portion of the second sheet member are joined.

Thereafter, the turret arm 2 is turned by 180 ° to rotate the second sheet roll 6 into the second sheet roll 6.
The first sheet roll 4 is moved to the position where the first sheet roll 4 was located together with the support shaft 5. The first support shaft 3 has the first
In place of the sheet roll 4, a third sheet roll is mounted. When the supply of the second sheet body from the second sheet body roll 6 is finished, the third sheet body roll has the start end portion of the third sheet body at the end side of the second sheet body. It is a new roll to be joined.

In the continuous sheet feeding apparatus, when the cutter 16 cuts the sheet, the sheet cut by the cutter 16 is on the path from the guide roller 12 to the nip roller 8. The positional relationship between the guide roller 12 and the nip roller 8 is always constant. Also,
These guide roller 12, nip roller 8 and cutter 1
6 is always constant. Therefore, in the continuous sheet feeding apparatus, regardless of the outer diameter of the second sheet roll 6, the nip position of the first sheet 4a by the nip roller 8 and the first sheet 4a by the cutter 16 are determined. The positional relationship with the cutting position is always constant.

Therefore, in this continuous sheet feeding device, the tail length is the distance from the joining position of the first sheet 4a to the second sheet to the cut end of the first sheet 4a. Is set to a very short distance of, for example, about 150 mm, since the tail length does not vary depending on the outer diameter of the second sheet roll 6, the tail length is always kept short. can do.

[0026]

As described above, the continuous sheet feeding apparatus according to the present invention comprises the first sheet conveying device supported and conveyed by the supporting member.
A nip roller for bringing the sheet member into contact with the outer peripheral surface of the second sheet member roll; and a first sheet member supported by the same support member as the nip roller and rearward of the nip roller with respect to the transport direction of the first sheet member. A guide roller that comes into contact with the cutter, and a cutter that is supported by the same support member as the nip roller and cuts the first sheet member at a position between the nip roller and the guide roller.

Therefore, in this continuous sheet feeding apparatus, the distance between the nip position by the nip roller and the cutting position by the cutter does not change even if the outer diameter of the second sheet roll changes.

That is, the present invention relates to the first transported
Is a sheet body continuous feeding device that joins the sheet bodies to the drawing start end of the second sheet body roll so that these sheet bodies can be continuously drawn out, and the first sheet member behind the joined point from the joined point. An object of the present invention is to provide a continuous sheet body feeding device capable of controlling the length of a tail of a sheet body to a cutting position sufficiently short so as to be controlled.

[Brief description of the drawings]

FIG. 1 is a side view showing a configuration of a continuous sheet body feeding apparatus according to the present invention.

FIG. 2 is a side view showing a state in which a sheet body supplied and conveyed from a first sheet body roll is pressed against a second sheet body roll in the continuous sheet body supply apparatus.

FIG. 3 is a side view showing a configuration of a conventional continuous sheet feeding apparatus.

FIG. 4 is a plan view showing a state of a joining portion of a first and a second sheet joined by a conventional sheet continuous feeding apparatus.

FIG. 5 is a side view showing a state of a joint portion between a first sheet body and a second sheet body joined by a conventional sheet body continuous feeding device.

FIG. 6 is a side view showing a state of a sheet roll in which an adhesive is applied at two locations to be joined by a conventional continuous sheet supply apparatus.

[Explanation of symbols]

3 first support shaft, 4 first sheet body roll, 4a first sheet body, 5 second support shaft, 6 second sheet body roll, 7 speed-up roller, 8 nip roller,
9 support members, 12 guide rollers, 16 cutters

Claims (1)

[Claims] A first rotation support portion rotatably supporting a first sheet body roll on which the first sheet body is wound; and a start end portion on an outer peripheral surface of the second sheet body wound around the first sheet body roll. A second rotation support unit rotatably supporting a second sheet roll having an adhesive adhered thereon, and rotating the second sheet roll supported by the second rotation support unit Accordingly, the rotation that synchronizes the linear velocity of the outer peripheral surface of the second sheet roll with the transport speed of the first sheet pulled out from the first sheet roll supported by the first rotation support portion is performed. An operation unit, rotatably supported by a support member, and capable of moving toward and away from the outer peripheral surface of the second sheet roll supported by the second rotation support portion by moving the support member. Made and moved to the second sheet roll side A nip roller that brings the first sheet body that has been drawn and conveyed from the first sheet body roll into contact with the outer peripheral surface of the second sheet body roll, and is rotated by a support member that supports the nip roller. Supported, and when the nip roller brings the first sheet body into contact with the outer peripheral surface of the second sheet body roll,
A guide roller that comes into contact with the first sheet member on the rear side of the nip roller with respect to a conveyance direction of the first sheet member, and a support member that supports the nip roller; The first sheet member is brought into contact with the outer peripheral surface of the second sheet member roll, and the starting portion of the second sheet member is joined to the first sheet member by the adhesive, and then the first sheet member is moved and the nip roller is moved. And a cutter for cutting the first sheet member at a position between the guide roller and the guide roller.