JPH09180700A - Method and device for mounting tab - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain shortening of a tact time and contribute to improving of productivity, by simplifying conveying control of a sheet-shaped conveyed object. SOLUTION: A sheet S, a sheet-shaped conveyed object, is conveyed along its lengthwise direction by a prescribed pitch, after once stopped, conveyed by a prescribed pitch. When conveying is stopped of this sheet S conveyed by each prescribed pitch, in a condition that partly the sheet is protruded from its width direction end part, a tab (t) is mounted. When conveying of the sheet S is stopped, the tab (t) mounted in the sheet S is covered with a tape (f).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet, which is performed as a pre-process of a sheet winding device that winds a sheet around a winding shaft in a manufacturing apparatus such as a lithium ion secondary battery and an electrolytic capacitor element. The present invention relates to a tab mounting method and a mounting device therefor.

[0002]

2. Description of the Related Art For example, a lithium ion secondary battery,
In order to manufacture an electrolytic capacitor element or the like, prepare a plurality of electrode sheets, stack a separator sheet between these electrode sheets and wind them, house the wound material in a container and cap the lid, The container must be completely sealed.

The electrode sheets include, for example, an aluminum foil which is a positive electrode sheet and a copper foil which is a negative electrode sheet, and an electrically insulating sheet which is a separator sheet is interposed therebetween.

As shown in FIGS. 3 and 4, a tab t is attached especially to the positive electrode sheet S. That is, the tab t is attached so as to project from the upper edge in the figure at a position slightly away from the one side edge of the positive electrode sheet S,
The insulating tape f is attached from above the tab t.

In this state, the positive electrode sheet, the negative electrode sheet and the separator sheet are superposed and wound. Since the tab t attached to the positive electrode sheet S is covered with the insulating tape f, the insulation is maintained in the wound state.

[0006] Then, after being inserted into the container in a wound state, the electrolytic solution is injected into the container, and covered with a lid, for example, a lithium ion secondary battery is molded. The tab t is brought into electrical contact with the lid to obtain a chemical action as a battery.

[0007]

By the way, such a device for attaching the tab t to the sheet S is conventionally constructed as shown in FIG. That is, the pair of feed rollers 1 and 1 which are the conveyance means nip and convey the sheet S. The seat S is the reference position, which is the tab mounting position a.
Then, the sheet is conveyed by a distance A, which is a tab mounting pitch, and then temporarily stopped.

A tab attaching device Wa, a tape attaching device Wb, and a sensor Wc as a detecting means are arranged along the sheet conveying direction, and a cutter mechanism (not shown) is arranged at a side end portion.

The predetermined tab attachment position a defined on the seat S faces the tab attachment device Wa, and the tab t is extended from this position and attached to the seat S. Then
The feed rollers 1 and 1 convey the sheet S by a distance B and stop. The portion where the tab t is attached is the tape attaching means Wb.
The insulating tape f is attached from above the tab t.

After that, the feed rollers 1 and 1 carry again and stop at the position where the tab t and the insulating tape f face the sensor Wc which is the tab detecting means. The sensor Wc detects whether or not the tab t is attached at a correct position and sends a determination signal to a control circuit (not shown) to make a pass / fail determination and feed back the feed rollers 1 and 1 as feed control.

The transport distance of the sheet S by the feed rollers 1 and 1 at this time is the difference (A between the tab mounting pitch A and the distance B from the tab mounting position to the insulating tape f mounting position).
-B), that is, the distance C.

Therefore, the feed rollers 1 and 1 carry the sheet S by the carrying distance changed in two steps of the distance B and the distance C (B + C = A) and then stop, so to speak, it is an irregular carrying. This control becomes complicated.

The actual takt time is tab t on the sheet S.
The time for mounting the sheet S and the time for transporting the sheet S with the tab t attached thereto by a distance B to the position where the insulating tape f is attached,
A total of four times, that is, the time for attaching the insulating tape f and the time for transporting the next tab attachment planned position a to the position opposite to the tab attachment device Wa are totaled.

Therefore, it takes time to complete one cycle, which hinders the improvement of productivity. If the conveyance speed is simply increased, the conveyance control and the tab and insulating tape attachment control for the conveyance control become complicated, and the tact time cannot be shortened easily.

The present invention has been made in view of the above circumstances, and an object thereof is to simplify conveyance control of a sheet-like conveyed product, shorten tact time, and improve productivity. It is intended to provide a method of attaching a tab to a sheet-like conveyed product and an attaching apparatus thereof, which contributes to the improvement of the above.

[0016]

In order to satisfy the above-mentioned object, the tab mounting method according to the first aspect of the present invention is, as a first aspect of the present invention, that a sheet-like conveyed product is conveyed at a predetermined pitch along its longitudinal direction. , The step of conveying the sheet-shaped conveyed object by a predetermined pitch after being stopped once, and when the conveyance of the sheet-shaped conveyed object conveyed by the predetermined pitch is stopped, the tab is partially protruded from the end portion in the width direction of the sheet-shaped conveyed object. The method is characterized by including a step of attaching and a step of covering the tab attached to the sheet-like conveyed article with a tape when the conveyance of the sheet-like conveyed article is stopped.

In order to satisfy the object, the tab attaching method according to the second aspect of the present invention is, as a second aspect, that the sheet-like conveyed product is conveyed at a predetermined pitch along the longitudinal direction thereof, and after being temporarily stopped, conveyed at a predetermined pitch. To feed the sheet-like conveyed article, means for attaching the tab in a state where a part of the sheet-like conveyed article protrudes from the end portion in the width direction, and tape to cover the tab attached to the sheet-like conveyed article. And a means for adhering, and these tab attaching means and tape attaching means are
It is characterized in that they are provided at an interval corresponding to the conveyance pitch of the sheet-like conveyed article by the above-mentioned feeding means, and operate in synchronization when the conveyance of the sheet-like conveyed article is stopped.

In order to satisfy the object, the tab attaching method according to the third aspect of the present invention is, as a third aspect, a sheet-like conveyed product, which is conveyed by a predetermined pitch along the longitudinal direction thereof, and once stopped, then conveyed by a predetermined pitch. To feed the sheet-like conveyed article, means for attaching the tab in a state where a part of the sheet-like conveyed article protrudes from the end portion in the width direction, and tape to cover the tab attached to the sheet-like conveyed article. It is provided with a means for attaching and a means for detecting the portion of the tab protruding from the sheet-like conveyed product, and the tab attaching means, the tape attaching means and the tab detecting means are respectively the sheet-like conveyed product by the feeding means. It is characterized in that it is provided at an interval corresponding to the conveyance pitch of, and operates in synchronization when the conveyance of the sheet-like conveyed object is stopped.

In order to satisfy the object, the tab attaching method according to the fourth aspect of the present invention is, as a fourth aspect, that the sheet-like conveyed product is conveyed at a predetermined pitch along the longitudinal direction thereof, and after being temporarily stopped, conveyed at a predetermined pitch. To feed the sheet-like conveyed article, and a tab provided in such a manner that a part provided so as to operate in synchronization with each other when the conveyance of the sheet-like conveyed article by the feeding means is projected from the widthwise end of the sheet-like conveyed article Means for attaching the tape and means for attaching a tape to the sheet-like conveyed product so as to cover the tab attached to the sheet-like conveyed object; and a tab attaching means provided between the tab attaching means and the tape attaching means. Adjusting means for adjusting the sheet length from the position to the tape mounting position and varying the tab mounting pitch.

By providing the means for solving the above problems, according to the first to fourth aspects of the invention, the sheet-like conveyed products are conveyed by the tab mounting pitch, and the tabs are attached to the sheet-like conveyed products. And the tape covering this tab is attached at the same time. Therefore, the time required for mounting the tabs is the sum of the time for these simultaneous operations and the time for transporting the sheet-shaped conveyed product.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is applied to the first invention to the third invention. In the figure, 2 is a sheet support, which is a sheet-like conveyed product (hereinafter simply referred to as a sheet) S that is wound in a roll shape by a supply unit (not shown) and is sequentially fed out.
I support.

At a predetermined position of the sheet support base 2, there is provided a pair of feed rollers 1 and 1 as a feed means.
The sheet S is sandwiched and conveyed. Above the sheet support base 2, a tab attaching device Wa as tab attaching means, a tape attaching device Wb as tape attaching means, and a sensor W as tab detecting means.
c are arranged at a predetermined interval.

To explain further, these devices Wa, Wb, Wc, which are arranged to face the sheet support base 2, are all arranged at the same distance D, and this distance is the same as the feed rollers 1, 1 described above. Coincides with the conveyance pitch D, at which the sheet S is nipped and conveyed and stopped.

The tab attaching device Wa is capable of attaching an extremely thin strip-shaped tab t, with a part thereof protruding from the widthwise end of the sheet S.

The tape sticking device Wb is adapted to feed a tape f having a width wider than that of the tab t so that it can stick to the sheet S. Then, as described above, the tape f covers the tab t attached to the sheet S from the setting of the positions of the devices Wa and Wb.

The sensor Wc is located above the tab t protruding from the sheet S and detects the position of the tab t. The sensor Wc is electrically connected to the control circuit 3 and sends a detection signal.

The control circuit 3 electrically determines a function of judging whether or not the detection position of the tab t is good, and a cutter mechanism 4 provided adjacent to the sensor Wc and a drive mechanism (not shown) for the feed rollers 1, 1. They are connected and send control signals to them.

Since the apparatus is constructed as described above, the feed rollers 1 and 1 convey the sheet S at a predetermined pitch D and stop. Planned tab attachment position a on the sheet S
When it faces the tab attachment device Wa, this device feeds out an extremely thin strip-shaped tab t to perform attachment action on the sheet S. At this time, part of the tab t is the sheet S
It is attached so as to protrude from the edge of the device by a predetermined length.

The tab t is the tape sticking device Wb.
When the tape f is opposed to the tab t, the tape f having a width wider than that of the tab t is fed out, and the tape S is attached to the sheet S from above the tab t by setting the position described above. The tab t is covered with the tape f, leaving a portion protruding from the sheet S.

When the tab t of the portion projecting from the sheet S faces the sensor Wc, this sensor detects the position of the tab t and sends the detection signal to the control circuit 3, where the tab is positioned at the correct position. Determine if it is installed.

The tab attaching device Wa, the tape attaching device Wb and the sensor Wc all operate at the same time while the sheet S conveyance of the feed rollers 1 and 1 is stopped. Then, the sheet conveying pitch D of the feed rollers 1 and 1
Indicates that the tape f is affixed on the tab t, since the position D is exactly the same as the arrangement distance D of the above devices, and the position thereof correctly faces the sensor Wc.

When the sensor Wc detects that the mounting position of the tab t is displaced for some reason, the control circuit 3 sends a control signal to the drive mechanism of the feed rollers 1, 1.
Adjust the feed rate.

The control circuit 3 controls the operation of the cutter mechanism 4 and has a function of cutting the sheet S by a predetermined length when the conveyance of the sheet S is stopped. In this way, the tab t and the tape f are attached at the same time, so that the sum of the two times of the time required for this work and the time required to convey the sheet S by the predetermined pitch D Is the time required to actually attach the tab t to the sheet S.

Therefore, compared with the conventional tab attachment which has been performed for a total of four times, the time can be remarkably shortened. A tab attaching device as shown in FIG. 2 may be used. This applies to the fourth invention.

An adjusting roller Wd as an adjusting means is provided between the tab attaching device Wa and the tape attaching device Wb. Feed roller 1, as a sheet feeding means
1 serves to sandwich the sheet S, convey the sheet S by a predetermined pitch F, and stop the sheet S once.

A sensor Wc as a tab detecting means is provided at a position separated from the tape sticking device Wb by a predetermined distance, that is, at a position at the same distance as the conveying pitch F of the feed rollers 1, 1.

The sensor Wc is located above the tab t protruding from the sheet S and detects the position of the tab. The sensor Wc is electrically connected to the control circuit 3A and sends a detection signal.

The control circuit 3A has a function of judging the quality of the detection position of the tab t by the sensor Wc, and the sensor Wc.
The cutter mechanism 4 and the feed roller 1, which are provided adjacent to c
1 is electrically connected to a drive mechanism (not shown) and sends a control signal to them.

Since the apparatus is constructed as described above, the feed rollers 1 and 1 convey the sheet S by a predetermined pitch F and stop. The tab attaching device Wa, the tape attaching device Wb, and the sensor Wc simultaneously perform a predetermined action on the sheet S when the sheet feeding of the feed rollers 1 and 1 is stopped.

That is, the tab attaching device Wa extends the tab t in the form of an extremely thin strip to perform an attaching action on the sheet S. At this time, part of the tab t is the sheet S
It is attached so as to protrude from the widthwise end edge thereof by a predetermined length.

The tape sticking device Wb feeds the tape f wider than the tab t, and sticks the sheet S from above the tab t from the setting of the position described above. The tab t is covered with the tape f, leaving a portion protruding from the sheet S.

When the tab t of the portion projecting from the sheet S faces the sensor Wc, this sensor detects the position of the tab t and sends the detection signal to the control circuit 3A, where the tab is attached at an accurate position. It is determined whether or not

If there is a positional deviation, a control signal is sent to the drive mechanism for the feed rollers 1 and 1 to adjust the feed speed. Further, the control circuit 3A uses the sensor W
The cutter mechanism 4 adjacent to c is controlled, and when the conveyance of the sheet S is stopped, the cutting action of the sheet is performed.

As described above, the time required to attach the tab t to the sheet S is the time required to convey the sheet S by the predetermined pitch F and the time required to attach the tab t and attach the tape f at the same time. It is set as the sum of time and two times.

Since the adjusting roller Wd is provided, when the required sheet length is changed, the position can be changed only by adjusting the position of the adjusting roller Wd without changing the position of the tape sticking device Wb. .

[0046]

As described above, the first aspect of the present invention is a tab attaching method for a sheet-like conveyed product, which comprises a step of attaching the tab when the conveyance of the sheet is stopped and a step of covering the tab on the sheet with a tape. Are done at the same time.

A second aspect of the present invention is a tab attaching device for a sheet-like conveyed product, comprising means for attaching a tab and means for attaching a tape to the sheet so as to cover the tab on the sheet.
Provided at the same interval as the sheet conveyance pitch,
Moreover, these act at the same time when the conveyance of the sheet is stopped.

A third aspect of the present invention is a tab attachment device for a sheet-like conveyed product, which comprises means for attaching the tab, means for attaching a tape to the sheet so as to cover the tab on the sheet, and detection means for detecting the tab. Are provided at the same interval as the sheet conveyance pitch, and they act simultaneously when the sheet conveyance is stopped.

A fourth aspect of the present invention is a tab attaching device for a sheet-like conveyed product, wherein a tab attaching pitch is provided between the tab attaching means and the tape attaching means, which act simultaneously when the conveyance of the sheet is stopped. Equipped with variable adjusting means.

Therefore, in any of the first to fourth inventions, the conveyance control of the sheet-like conveyed object is simplified, and the time required to attach the tab to the sheet is such that the sheet is conveyed by a predetermined pitch. From the time required, the time required for tab attachment and tape attachment performed at the same time, which is set as the sum of the two times,
The tact time can be shortened, and the productivity can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a tab attaching device for a sheet-like conveyed product, showing an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a tab attaching device for a sheet-like conveyed product, showing another embodiment.

FIG. 3 is a perspective view illustrating tab attachment to a sheet-like conveyed product.

FIG. 4 is a perspective view of a sheet-like conveyed product to which a tab is attached.

FIG. 5 is a schematic configuration diagram of a tab attaching device for a sheet-like conveyed product showing a conventional form of the present invention.

[Explanation of symbols]

 S ... (Sheet-like conveyed object) Sheet, 1 ... (Sheet-like conveyed object feeding means) Feed roller, t ... Tab, f ... Tape, Wa ... (Tab attaching means) Tab attaching device, Wb ... (Tape attaching means) ) Tape sticking device, Wc ... (detection means) sensor, Wd ... (adjustment means) adjusting roller.

Claims (4)

[Claims] 1. A step of conveying a sheet-like conveyed product at a predetermined pitch along a longitudinal direction thereof, temporarily stopping and then conveying at a predetermined pitch, and at the time of stopping the conveyance of the sheet-like conveyed product conveyed by the predetermined pitch. A step of attaching a tab in a state where a part of the sheet-like conveyed product is projected from an end portion in the width direction, and a step of covering the tab attached to the sheet-like conveyed product with tape when the conveyance of the sheet-like conveyed product is stopped And a tab attaching method characterized by having. 2. A sheet-like conveyed article feeding means for conveying a sheet-like conveyed article at a predetermined pitch along its longitudinal direction, temporarily stopping and then conveying it at a prescribed pitch, and an end portion in the width direction of the sheet-like conveyed article. And a means for attaching a tape so as to cover the tab attached to the sheet-like conveyed product.The tab attaching means and the tape attaching means are A tab attachment device, wherein the tab attachment device is provided at an interval corresponding to the conveyance pitch of the sheet-like conveyed article by the above-mentioned feeding means, and operates in synchronization when the conveyance of the sheet-like conveyed article is stopped. 3. A feeding means for feeding a sheet-like conveyed product at a predetermined pitch along the longitudinal direction thereof, after temporarily stopping, and then for a prescribed pitch, and a widthwise end portion of the sheet-like conveyed product. Means for attaching the tab in a state in which a part of the sheet-like conveyed product is attached, a means for attaching a tape so as to cover the tab attached to the sheet-like conveyed product, and a tab portion protruding from the sheet-like conveyed product is detected The tab attaching means, the tape adhering means and the tab detecting means are provided at intervals corresponding to the conveyance pitch of the sheet-like conveyed article by the feeding means, respectively, and the sheet-like conveyed article is provided. A tab mounting device characterized in that the tab mounting device operates in synchronism with the stop of transportation of the tabs. 4. A sheet-like conveyed article conveying means for conveying the sheet-like conveyed article at a predetermined pitch along its longitudinal direction, temporarily stopping it, and then conveying it at a predetermined pitch, and conveying the sheet-like conveyed article by the feeding means. Means for attaching tabs with parts provided so as to operate in synchronization with each other when stopped, protruding from the widthwise end of the sheet-like conveyed product, and sheet-shaped so as to cover the tabs attached to the sheet-like conveyed product A means for attaching the tape to the transported object and a means for attaching the tape and the means for attaching the tab are provided to adjust the sheet length from the tab attaching position to the tape attaching position and to change the tab attaching pitch. A tab attaching device, comprising: