JPH10291702A - Sheet carrier feeding device - Google Patents

Abstract

(57) [Summary] [Problem] To always maintain a constant tail length regardless of the outer diameter of a new roll, and realize a reliable continuous feeding operation. SOLUTION: An apparatus for bringing a carrier 2 of an old roll 1 near the end of a carrier 2 into pressure by a joining roll 5 at a joining portion of a start end of a carrier 4 of a new roll 3 to continuously feed out the carriers 2 and 4 is used. Rotational angular velocity of 3 and outer diameter sensor 1
3 controls the movement of the joining roll 5 and the cutting member 6 in accordance with the detection of the outer diameter of the new roll 3 by the sensor 3 and the detection of the passage timing of the joint by the joint sensor 12. The joining roll 5 and the cutting member 6 are supported by the same support 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carrier feeding device for continuously feeding carriers from a plurality of sheet-shaped carrier rolls in a process of manufacturing an electrode material used for manufacturing a battery.

[0002]

2. Description of the Related Art Conventionally, in a manufacturing process of an electrode raw material used for manufacturing a battery, a carrier roll wound with a sheet-like carrier such as a copper foil or an aluminum foil as a base of the electrode raw material is used. 2. Description of the Related Art A sheet-shaped carrier feeding device that feeds a carrier and feeds the carrier to a next process such as a coating process or a cutting process is used.

[0003] As this sheet-like carrier feeding device, as shown in FIG.
When the first carrier 102 sent out from the first carrier roll 101 approaches the end, the vicinity of the end of the first carrier 102 is changed to a new roll, that is, the second carrier wound around the second carrier roll 103. Of the plurality of carriers 10 by being joined to the starting end of the
There has been proposed a carrier feeding device capable of continuously feeding 2,104 one after another.

In such a sheet-like carrier feeding device, the second carrier roll 103 is provided with a bonding portion coated with an adhesive or the like at the starting end of the second carrier 44 on the outer peripheral surface. Have been. Then, the second carrier roll 103 is rotated by a driving force of a speed-up motor 107 via a ring cone 108 and a speed-up roller 109. The outer peripheral surface of the speed-up roller 109 is in contact with the outer peripheral surface of the second carrier roller 103.

[0005] The rotation speed of the second carrier roll 103 is controlled so that the peripheral speed is equal to the speed of the first carrier 102 being sent out and conveyed from the first carrier roll 101. The peripheral speed of the second carrier roll 103 is detected by a peripheral speed detection sensor 110. The position of the joint is determined by the joint detection sensor 11.
1 is detected.

[0006] The vicinity of the end of the first carrier 102 is pressed against a joint on the outer peripheral surface of the second carrier roll 103, and joined to the start end of the second carrier 44. The second of such a first carrier 102
Is pressed against the carrier 44 by the second carrier roll 10.
3 is performed by a joining roll 105 which can be moved toward and away from the third roller 3. The second carrier 44 is sent out following the vicinity of the end of the first carrier 102. At this time, the first carrier 102 is connected to the second carrier 102
Is cut by the cutting member 106 at a position on the rear side in the transport direction from the portion joined to the carrier 44.

The terminal portion of the second carrier 44 is, like the terminal portion of the first carrier 102,
The next new roll, that is, the third carrier roll wound as the third carrier roll, is joined near the start end.
In this way, the next carrier is sequentially joined and sent out, and a continuous carrier is sent out.

[0008]

By the way, in the sheet-like carrier feeding device as described above, if the distance between the joining roll 105 and the cutting member 106 is large, the first carrier 102 is joined to the joining portion. The length of the portion from the cut portion to the end, that is, the length of the tail portion is increased.

When the length of the tail portion is increased, an accident such as entangling or rampage during the transport of the carrier may occur and the carrier may be cut. In this case, the carrier may be wrinkled near the joint.

Further, the peripheral speed of the second carrier roll is set to the first speed.
If the carrier is not accurately synchronized with the transport speed of the carrier, the length of the tail portion is not controlled to be constant, and there is a possibility that joining of the carriers may not be performed stably.

In the above-mentioned conventional sheet-shaped carrier feeding device, since the speed-up roller 109 is rotated through the ring cone 108, so-called mechanical loss occurs, and the rotation speed of the second carrier roll 103 is sufficiently high. May not be controlled. Therefore, in this sheet-shaped carrier feeding device, there is a possibility that the operation timing of the joining roll 105 and the operation timing of the cutting member 106 may have an error with respect to the calculated value, and the length of the tail portion is not controlled to be constant.

In order to prevent an accident caused by such an unstable length of the tail portion, it is conceivable to join the first carrier and the second carrier at two places as shown in FIG. . However, when the carriers are joined at two locations, air may enter between the joining portions and wrinkles may occur in the carrier. Also, even if the carriers are joined at two places, if the length of the tail part is not stable, as shown in FIG. May not be joined. The joining portion where the first carrier is not joined causes sticking of the second carrier to a guide roller or the like.

Accordingly, the present invention has been proposed in view of the above-mentioned circumstances, and has been proposed in connection with joining a first carrier being conveyed to a starting end portion of a second carrier. By accurately detecting the peripheral speed of the first carrier, the joining of the first carrier to the second carrier roll can be reliably performed, and the continuous feeding of these carriers can be smoothly and reliably performed. It is an object of the present invention to provide a sheet-like carrier feeding device made in accordance with the above.

[0014]

In order to solve the above-mentioned problems and to achieve the above-mentioned object, in the sheet-like carrier feeding device according to the present invention, the first carrier is connected to the joining portion on the starting end side of the second carrier. The joining roll to be joined and the cutting member for cutting the first carrier at the rear side in the transport direction of the joining portion to the joining portion were disposed so as to be supported by an integral member.

The control means for controlling the operation of moving the joining roll and the cutting member cuts the first carrier by the cutting member within a predetermined distance from a portion joined to the joining portion of the second carrier.

Therefore, in this sheet-shaped carrier feeding device, even if the outer diameter of the second carrier roll is different, the tail of the first carrier on the rear end side from the joint portion to the second carrier is provided. The length of the part is kept constant.

[0017]

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

In the sheet carrier feeding device according to the present invention, as shown in FIG. 1, first and second carrier rolls 1 and 3 are rotatably supported respectively. The carrier rolls 1 and 3 are supported at both ends of a turret arm 14 rotatably supported via a turret shaft on a base (not shown) with the rotation axes parallel to each other. The turret arm 14 is 180
The rotation operation can be performed intermittently at an angle position of every °.

The first carrier 2 and the second carrier 4 forming the carrier rolls 1 and 3 are, for example, a copper foil or an aluminum foil serving as a base of an electrode material of a battery such as a lithium ion secondary battery. , The respective carrier rolls 1, 3
And is conveyed to the next process such as a coating process and a cutting process.

The first carrier roll 1 comprises the second carrier roll 1
The carrier roll 3 is an unused new roll, whereas the carrier roll 3 is an old roll that sends out the first carrier 2 prior to the second carrier roll 3. That is, the first
The first carrier 2 forming the carrier roll 1 of the first embodiment has been conveyed to the next step before the second carrier 4 forming the second carrier roll 3.

The first carrier roll 1 is rotated by a rotary drive (not shown) in a direction in which the first carrier 2 is fed. The rotation drive device is controlled by the speed control device, and controls the rotation angular speed of the first carrier roll 1 so that the transport speed of the first carrier 2 to be sent out is constant. The first carrier 2 is guided by a plurality of guide rollers 15, 16 and further guided by a guide roller 17, and is conveyed to the next step as shown by an arrow A in FIG. The transport speed of the first carrier 2 is detected by a transport speed detection sensor (not shown) serving as a transport speed detecting unit.

Then, as shown by an arrow B in FIG. 1, the second carrier roll 3 is driven by a driving force of a speed-up motor 9 constituting a rotary operation means via a speed-up roller 10 as shown by an arrow B in FIG. The rotation operation is performed in a direction in which the second carrier 4 is sent out, which is the same direction as the rotation direction of the roll 1. The speed-up motor 9 directly rotates the speed-up roller 10. The speed-up roller 10 is in contact with the outer peripheral surface of the second carrier roll 3.

The speed-up motor 9 is controlled by a speed controller so that the peripheral speed of the second carrier roll 3 is synchronized with the transport speed of the first carrier 2.
The rotational angular velocity of the carrier roll 3 is controlled.

The carrier feeder has an outer diameter detecting sensor 13 which serves as an outer diameter detecting means for measuring the outer diameter of the second carrier roll 3 attached to the turret arm 14. This outer diameter detection sensor 13 is
Is disposed at a predetermined position from the support shaft of the carrier roll 3, and
By measuring the distance to the outer peripheral surface of the second carrier roll 3, the outer diameter of the second carrier roll 3 is calculated. The detection output of the outer diameter detection sensor 13 is sent to a speed control device.

A joining portion is provided at the start end of the second carrier 4 on the outer peripheral surface of the second carrier roll 3. The joining portion is formed by applying an adhesive, and is provided facing the outer side of the second carrier roll 3.

The carrier feeder has a joint detection sensor 12 as joint detection means for detecting the joint of the second carrier 4. The joint detection sensor 12 is configured to output a detection signal when the joint passes through a position facing the joint detection sensor 12. The joint detection sensor 12 can be moved forward and backward with respect to the second carrier roll 3 by the servomotor 11, and is located at a position which is always at a constant distance from the outer peripheral surface of the second carrier roll 3. The detection output of the joint detection sensor 12 is sent to a speed control device.

The peripheral speed Vr of the second carrier roll 3 is determined by the diameter φD of the second carrier roll 3 detected by the outer diameter detection sensor 13 and the passing period Ts of the joint detected by the joint detection sensor 12. Is calculated by That is, assuming that the rotational angular velocity of the second carrier roll 3 is ω, it is calculated by Vr = 2πr / ω = πφD / Ts.

In the vicinity of the second carrier roll 3, a joint roll 5 is arranged in a position sandwiching the transport path of the first carrier 2 in cooperation with the second carrier roll 3. Has been established. The joining roll 5 is rotatably disposed on a pivot arm rotatably supported on the base end side by the support member 8.

The joining arm 5 is brought close to the outer peripheral surface of the second carrier roll 3 by rotating the rotating arm toward the second carrier roll 3 as shown by an arrow C in FIG. Is moved to the position where The joining roll 5 cooperates with the second carrier roll 3 to sandwich the first carrier 2 and press the first carrier 2 against the second carrier roll 3.

The support member 8 is provided with a cutting member 6 at a position between the joining roll 5 and the first carrier roll 1.
Are arranged. When the joining roll 5 presses the first carrier 2 against the second carrier roll 3, the cutting member 6 is moved to the first carrier 2 side as shown by an arrow D in FIG. The first carrier 2 is cut at a portion between the joining roll 5 and the first carrier roll 1.

The support member 8 can be moved in the direction of contact and separation with the second carrier roll 3 by the driving force of the servo motor 7. The timing of the moving operation of the support member 8, the joining roll 5, and the cutting member 6 is as follows.
Controlled by a speed controller.

In the sheet-shaped carrier feeding device configured as described above, the transport of the first carrier 2 to the next step proceeds, and the residual of the first carrier 2 on the first carrier roll 1 is reduced. Then, the end portion of the first carrier 2 is joined to the start end portion of the second carrier 4.

That is, when the residual amount of the first carrier 2 in the first carrier roll 1 becomes less than a predetermined amount, the joining roll 5 moves the first carrier 2 by the operation of the servo motor 7 and the rotating arm. 2 is pressed against the outer peripheral surface of the carrier roll 3. The first carrier 2 pressed against the outer peripheral surface of the second carrier roll 3 is joined to the joint, and the conveyance is continued with the start end of the second carrier 4 provided with the joint. Then, the first carrier 2 is cut by the cutting member 6 on the rear side in the transport direction from the joint portion to the joint portion. In this way,
In the next step, continuous conveyance is performed in a state where the end portion of the first carrier 2 and the start portion of the second carrier 4 are joined.

After that, the second carrier roll 3 is moved to the position where the first carrier roll 1 was located by turning the turret arm 14 by 180 °. Then, instead of the first carrier roll 1, a third carrier roll is mounted on the spindle supporting the first carrier roll 1. The third carrier roll is a second carrier 4 from the second carrier roll 3.
When the feeding of the third carrier is completed, a new roll for joining the starting end of the third carrier to the end of the second carrier 4 is formed.

Then, in this sheet-shaped carrier feeding device, the pressing of the first carrier 2 against the second carrier roll 3 by the bonding roll 5 is performed as shown in FIG. On the other hand, when the joint is at a position separated by an angle of 180 ° around the support shaft of the second carrier roll 3, that is, when the joint is located around the support shaft of the second carrier roll 3 with respect to the front of the joint detection sensor 12. This is started when the joint is at a 90 ° angle, and continues until the joint is moved to a position corresponding to the joining roll 5. The cutting of the first carrier 2 by the cutting member 6 is performed when the joint is moved to a position corresponding to the joining roll 5, that is, when the joint is moved to the front of the joint detection sensor 12. This is performed when the roll 3 is positioned at an angle of 270 ° around the support shaft.

In this sheet carrier feeding device, the speed control device controls the transport speed of the first carrier 2, that is, the peripheral speed of the second carrier roll 3,
The timing of the moving operation of the joining roll 5 and the cutting member 6 is controlled in accordance with the timing of detecting the joining portion by the joining portion detection sensor 12.

Here, the time from the start of the control to move the joining roll 5 until the joining roll 5 actually presses the first carrier 2 onto the second carrier roll 3, ie, the joining roll Assuming that the delay time of No. 5 is Tn, control for moving the joining roll 5 is performed at a timing specified by Ts / 4−Tn · Vr. By adopting such a timing, the joining portion 5 determines the timing at which the first carrier 2 actually presses the first carrier 2 onto the second carrier roll 3 by the joining portion detection sensor 12.
At an angle of 90 ° with respect to the front of the camera.

Assuming that the time from the start of the control to move the cutting member 6 to the actual cutting of the first carrier 2 by the cutting member 6, ie, the delay time of the cutting member 6, is Tk, The control for moving the cutting member 6 is performed at a timing specified by 3Ts / 4-Tn · Vk. By taking such a timing, the cutting member 6 is moved to the first position.
The carrier 2 may be actually cut at a time when the joint is located at an angle of 270 ° with respect to the front of the joint detection sensor 12.

It is needless to say that the sheet-shaped carrier feeding device according to the present invention can be applied to a carrier feeding device other than for battery manufacture.

[0040]

As described above, in the sheet carrier feeding device according to the present invention, the first carrier is connected to the second carrier.
And a cutting member that cuts the first carrier on the rear side in the transport direction of the joining portion to the joining portion, which is joined to the joining portion on the starting end side of the carrier. . The control means for controlling the operation of moving the joining roll and the cutting member moves the first carrier to the second carrier.
Is cut by a cutting member within a predetermined distance from a portion joined to the joint of the carrier.

Therefore, in this sheet-like carrier feeding device, even if the outer diameter of the second carrier roll is different, the tail of the first carrier on the rear end side from the joint portion to the second carrier is provided. The length of the part can be kept constant.

That is, the present invention relates to the first transported
When the carrier is joined to the start end of the second carrier, the peripheral speed of the second carrier roll is accurately detected, so that the joining of the first carrier to the second carrier roll is ensured. It is possible to provide a sheet-like carrier delivery device capable of performing such continuous delivery of the carrier smoothly and reliably.

[Brief description of the drawings]

FIG. 1 is a side view showing a configuration of a sheet-like carrier feeding device according to the present invention.

FIG. 2 is a side view showing operation timings of a joining roll and a cutting member on a second carrier roll in the sheet-like carrier feeding device.

FIG. 3 is a side view showing a configuration of a conventional sheet-shaped carrier feeding device.

FIG. 4 is a side view showing a state of a joining portion in a case where two joining portions are provided in a conventional sheet-like carrier feeding device.

FIG. 5 is a side view showing a state in which joining is incomplete when two joining portions are provided in the conventional sheet-shaped carrier feeding device.

[Explanation of symbols]

1 First carrier roll, 2 First carrier, 3
Second carrier roll, 4 Second carrier, 5 Joining roll, 6 Cutting member, 12 Joint detection sensor, 13
Outer diameter detection sensor

Claims (3)

[Claims] 1. A transport speed detecting means for detecting a transport speed of a first carrier sent from a first carrier roll rotatably supported, and a second carrier on which a second carrier is wound. Rotation operating means for rotating the roll, outer diameter detecting means for detecting the outer diameter of the second carrier roll, and detecting a joint provided on the outer peripheral surface of the roll near the starting end of the second carrier. The peripheral speed of the second carrier roll from the outer diameter of the second carrier roll detected by the outer diameter detecting means and the passage period of the bonding part detected by the bonding part detecting means. Speed control means for controlling the rotation operation means and synchronizing the peripheral speed of the second carrier roll with the transport speed of the first carrier; and a rotatably supported and Made in the separable direction movable operation for Alor, the first
A joining roll for pressing the first carrier delivered from the carrier roll to the peripheral surface of the second carrier roll, and a moving operation in a contact / separation direction with respect to the first carrier roll being transported; A cutting member that cuts the first carrier on the rear side in the transport direction of a portion joined to the joining portion of the second carrier by the joining roll; Means, and the joining roll and the cutting member are provided and supported by an integral member, and the control means, based on a detection result by the peripheral speed detecting means and the joining part detecting means, The moving operation of the joining roll and the cutting member is controlled, and the first carrier is moved within a predetermined distance from a portion joined to the joining portion of the second carrier. Sheet carrier delivery apparatus characterized by cutting by Oite the cutting member. 2. The sheet carrier feeding device according to claim 1, wherein the rotation operating means directly drives the second carrier roll. 3. The sheet according to claim 1, wherein the position of the detecting unit is controlled by a position control mechanism so that the detecting unit is at a fixed distance from the outer peripheral surface of the second carrier roll. Carrier delivery device.