JPH11292364A - Meandering protective device for long and thin plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent meandering of a long and thin plate in simple structure. SOLUTION: This device comprises a feed roller 10 provided with a meandering protective function comprising a roller main body 13 to guide a long and thin plate, a pair of guide plates 15 freely movably engaged around both ends of the roller main body 13, and a pair of energization means to energize the guide plates 15 toward a center part of the roller main body 13 with similar or roughly similar force, and feed rollers provided on both sides of the feed roller 10 provided with the meandering protective function to bend the long and thin plate supplied to the roller 10 downward or upward making the roller main body 13 as the center.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a meandering prevention device for a long thin plate.

[0002]

2. Description of the Related Art For example, in a process of manufacturing a paste type electrode used for an electrode group of a secondary battery, a paste containing an active material is applied to a long current collector plate such as a long punched metal and dried. Press molding has been performed.
In order to press-form such a long paste-coated current collector plate, a press machine having a pair of pressure rollers while guiding the long paste-coated current collector plate from a supply source such as a hoop by a plurality of feed rollers is used. And compression molded. In this step, when the long paste-coated current collector sent to the pair of pressure rollers meanders and shifts in the width direction, the current collector is uniformly compression-molded over the entire width direction. Becomes difficult. As a result, the thickness of the obtained paste-type electrode varies, and the performance of an electrode group manufactured using this electrode significantly deteriorates.

[0003] For this reason, a meandering prevention mechanism is conventionally provided in a hoop as a supply source, and the position state (shift state) of a long paste-coated current collector supplied immediately before the press machine is detected. The detection result is fed back to the meandering prevention device to control the movement of the hoop itself in the width direction.

[0004]

However, the conventional structure in which a hoop is provided with a meandering prevention mechanism has a problem that the size of the apparatus is large and the cost of the manufacturing apparatus is increased.

SUMMARY OF THE INVENTION An object of the present invention is to provide a long thin plate meandering preventing apparatus which can prevent meandering of a long thin plate with a simple structure.

[0006]

According to the present invention, there is provided a meandering prevention device for a long thin plate according to the present invention, comprising a roller body for guiding the long thin plate, and a pair of movably fitted near both ends of the roller body. A feed roller with a meandering prevention function having a guide plate and a pair of biasing means for biasing the pair of guide plates toward the center of the roller body with equal or substantially equal force; the meandering prevention function A feed roller disposed on both sides of the feed roller, and for bending the long thin plate supplied to the roller downward or upward about the roller body; .

As the long thin plate, for example, a positive electrode material, a negative electrode material, etc. used for manufacturing an electrode group of a secondary battery can be exemplified.

According to the present invention, a pair of guide plates are movably fitted near both ends of the roller main body, and the pair of guide plates are further fitted to the roller main body in the same or substantially the same direction toward the center of the roller main body. By arranging a pair of urging means for urging with the same force, even if the long thin plate guided by the roller body meanders and shifts in the width direction, it is urged by the urging means. The pair of guide plates function to return the thin plate to a predetermined position. For this reason,
The meandering of the long thin plate guided by the roller body can be prevented.

In addition, feed rollers are respectively arranged on both sides of the feed roller with a meandering prevention function, and a long thin plate supplied to the feed roller with a meandering prevention function is directed downward or upward around the roller body. By bending, it is possible to prevent the end of the long thin plate guided by the roller body from being bent in the width direction, that is, to prevent so-called curling.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example in which a meandering prevention device according to the present invention is applied to a roller press device for compression-molding a long thin plate (a long paste-type hydrogen storage electrode material) will be described with reference to FIGS. .

The hoop 2 on which the long paste-type hydrogen storage electrode material 1 is wound is rotatably supported by a pair of support bases 4 whose shafts 3 at both ends face each other. The long paste-type hydrogen storage electrode material is prepared, for example, by applying a paste prepared by kneading a hydrogen storage alloy powder, a conductive agent, and a binder in the presence of water to a long punched metal, and drying the paste. It is a thing.

The dancer roller 5 is disposed on the supply side of the long paste type hydrogen storage electrode material 1. The dancer roller 5 is composed of a pair of opposing support plates 7 having long holes 6 in a vertical direction, and a feeder arranged between the support plates 7 so that shafts 8 at both ends are engaged with the long holes 6. And a roller 9.

The feed roller 10 with a meandering prevention function is rotatably disposed between a pair of upper branch portions 12 of a pair of opposing support members 11 located above the dancer roller 5 in the rear stage. This feed roller 10 with a meandering prevention function
Is provided with the roller body 13 for guiding the long paste-type hydrogen storage electrode material 1 rotatably supported between the branch portions 12. A pair of fixed disks 14 are pivotally mounted near both ends of the roller body 13. The pair of guide discs 15 are movably fitted to the roller body 13 at the center of the fixed discs 14.
The coil springs 16 as a pair of urging means for urging the respective guide disks 15 toward the center of the roller body 13 with the same force are provided on the respective fixed disks 14.
And the roller body 12 located between each guide disc 15
Respectively.

A feed roller 17 for guiding the long paste-type hydrogen storage electrode material 1 sent from the roller body 13 downward has shafts 18 at both ends thereof at lower branch portions of the pair of support members 11. It is rotatably supported between 19.

A pair of pressure rollers 20 and 21 as a roller press device for compression-molding the long paste type hydrogen storage electrode material 1 sent from the feed roller 17 have shafts 22 and 23 at both ends thereof. It is rotatably supported by the support member.

According to such a configuration, the long paste type hydrogen storage electrode material 1 wound around the hoop 2 is pulled out through the rollers 5, 10, 17 and the roller press device, and is taken up by a winding roller (not shown). When the take-up roller is rotated at a desired speed, the long paste-type hydrogen storage electrode material 1 is fed by the feed roller 9 of the dancer roller 5 and the roller body 13 of the feed roller 10 with the meandering prevention function. And, it is supplied from the feed roller 17 to between the pair of pressure rollers 20 and 21, where it is compression-molded to obtain the long paste type hydrogen storage electrode 24.

When the long paste type hydrogen absorbing electrode material 1 is guided and passed through the roller body 13 of the meandering preventing roller 10, as shown in FIG. Since the guide disks 15 urged by the pair of coil springs 16 toward the central portion of the roller body 13 with equal force are brought into contact with each other, the material 1 is always positioned at the center of the roller body 13. You can be guided to take a posture. For this reason, in the compression molding of the long paste-type hydrogen storage electrode material 1 by the pair of pressure rollers 20 and 21, even if the material 1 meanders due to a thickness variation in the width direction or the like, The meandering state of the feed roller 10 with the meandering prevention function disposed in the preceding stage of the roller press device is restored, and the feed roller 10 can always be supplied to the roller press device in a normal posture. Therefore, since the long paste-type hydrogen storage electrode material 1 can be uniformly compression-molded over the entire width direction by the roller press device, the performance of an electrode group manufactured using this electrode can be stabilized.

Further, the feed roller 1 having the meandering preventing function is provided.
0, the dancer roller 5 and the feed roller 17 are respectively arranged, and the long paste type hydrogen storage electrode material 1 supplied to the feed roller 10 having the meandering prevention function is directed downward around the roller body 13. By bending, the end of the long paste-type hydrogen storage electrode material 1 guided by the roller body 13 can be prevented from being bent in the width direction, that is, the so-called curling.

[0019]

As described in detail above, according to the long thin plate meandering prevention device according to the present invention, it is possible to prevent the long thin plate meandering with a simple structure, and furthermore, it is possible to prevent the electrode group of the secondary battery from being used. It has a remarkable effect such as being able to be favorably applied to a manufacturing apparatus for a paste-type electrode having stable performance to be used.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an example in which a meandering prevention device for a long thin plate of the present invention is applied to a roller press device.

FIG. 2 is an enlarged top view of a main part of the apparatus of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Long paste type hydrogen storage electrode material, 2 ... Hoop, 5 ... Dancer roller, 10 ... Feeding roller with meandering prevention function, 13 ... Roller body, 14 ... Fixed disk, 15 ... Guide disk 16 ... Coil spring, 20, 21 ... pressure roller.

Claims (1)

[Claims] 1. A roller body for guiding a long thin plate, a pair of guide plates movably fitted near both ends of the roller body, and the pair of guide plates provided at a central portion of the roller body. A feed roller with a meandering prevention function having a pair of biasing means for biasing the feed roller with the same or substantially the same force; the feed roller being disposed on both sides of the feed roller with the meandering prevention function, and being supplied to the roller. A feed roller for bending the thin sheet downward or upward about the roller body; a meandering preventing apparatus for a long thin sheet.