JPH0917419A - Meandering prevention device for hoop material - Google Patents

Abstract

PURPOSE: To prevent the occurrence of creases or break of a hoop material by sandwiching right and left end portions of the hoop material from up and down by rollers so as to prevent meandering of the hoop material without touching the central portion of the hoop material in forcible conveying the wide hoop material by the rollers. CONSTITUTION: Right and left end portions of a hoop material 3 are sandwiched between rollers 1, 1' pairing up and down for meandering prevention, and an outward opening tilt angles are given to the rollers 1, 1' so that tensile forces in a reverse direction against a meandering direction are applied to the same to prevent the meandering thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a meandering preventive device for moving a wide and long hoop material for applying a paste, which is used for a hoop material, particularly a battery electrode plate.

[0002]

2. Description of the Related Art Conventionally, this kind of hoop material is often meandered during transportation by rollers due to uneven elongation in the width direction during its manufacturing process, deformation during cutting by slitter, variation in material thickness, etc. This caused problems such as wrinkles on the hoop material and making it impossible to run.

Therefore, as a measure for preventing the meandering of the hoop material, the entire surface of the hoop material 3 as shown in FIG.
It is supported by the wide roller 21 of the book, and the meandering amount of the hoop material is driven by the drive actuator 22 according to the signal of the detection device 23.
The meandering amount of the roller 21 is corrected and controlled by rotating the roller 21 around the fulcrum (not shown) at a small angle, or moving the roller 21 left and right with respect to the moving direction of the hoop. Reference numeral 24 is a tension roller that gives tension to the hoop material.

[0004]

However, when the above meandering prevention device is used in the step of continuously applying the paste mainly containing the desired powder and the binder solution on both sides of the hoop material, If the support roller of the hoop material comes into contact with the surface of the paste coating portion while the paste coating surface is still undried, the paste coating surface is damaged and a defective product is produced. Therefore, in such a device, it is not possible to control the meandering immediately after the paste is applied on both sides of the hoop material, and there is a demand for a device capable of preventing the meandering accompanying the movement of the hoop material even immediately after the paste applying.

[0005]

Means for Solving the Problems The present invention is to solve the above-mentioned problems, and a meandering prevention device for a wide and long hoop material that is forcibly moved is provided with a pair of upper and lower rollers for removing the left and right ends of the hoop material. Insert each from the top and bottom,
This pair of rollers is a driven roller that has no driving force.The axis of the pair of rollers is parallel to the upper and lower pair of rollers, and is inclined so as to open slightly outside the parallel to the running direction of the hoop material. It is a thing.

Furthermore, a pair of rollers sandwiching the left and right ends of the wide hoop member from above and below are attached to the tip ends of the levers that make up and down pairs so as to freely rotate, and a drive source for moving the levers up and down, A sensor that detects the meandering amount of the hoop material and its direction, and a control unit that controls the drive source by signal output from the sensor, and controls the drive source according to the detection signal output of the sensor meandering amount and direction. Then, the lever is moved up and down to control the operation of sandwiching and releasing the left and right ends of the hoop material by the pair of rollers.

[0007]

In order to control the meandering that occurs during the movement of the long hoop material, it is necessary to pull back the hoop material in the opposite direction of the meandering. Particularly, as described above, when the hoop material such as the battery electrode plate is continuously coated with the paste mainly containing the desired powder and the binder solution, the paste surface cannot be touched. In the present invention, a portion where the paste is not applied is provided on both left and right ends of the hoop material, and this portion is sandwiched by a pair of rollers from above and below, and the hoop material is pulled to the proper position by pulling the hoop material to the side opposite to the meandering direction. I tried to pull it back.

The pulling of the hoop material by the pair of rollers here is controlled in accordance with the amount of meandering generated in the hoop material and the meandering direction, and both or either of the left and right ends of the hoop material of the sandwiching rollers forming a pair of upper and lower rollers are controlled. It is appropriately performed by controlling the pinching and releasing operations.

[0009]

EXAMPLES Examples of the present invention will be described below with respect to the meandering of the hoop material in the step of applying the paste to the wide and long hoop material.

As shown in FIG. 1, a wide and long hoop material 3
In the step of applying the paste 4 to the hoop material 3, the left and right ends of the hoop material 3 can be sandwiched by the sandwiching rollers 1 and 1'composed of a pair of upper and lower portions, that is, a portion of the raw material of the hoop material having a width of 10 to 40 mm, that is, A portion 5 where the paste is not applied is provided. The sandwiching rollers 1 and 1 ′ forming a pair of upper and lower sides are made of, for example, rubber rollers whose surfaces are knurled, and are provided so as to freely rotate at the tips of levers 10 and 11 which are opened and closed by an actuator 2 having a sandwiching mechanism. ing. The upper and lower rollers 1, 1 ′ have a certain angle inclination 8 with respect to the conveying direction of the hoop material 3, and here, among the preferable inclination angles θ2 to 10 degrees,
It is marked with 4 degrees. The angle θ is symmetrically set so as to open outward from both left and right ends of the hoop material with respect to the traveling direction of the hoop material 3. When the pair of nipping rollers 1 and 1 ′ nips the left and right end portions 5 of the hoop material 3 from above and below by the operation of the actuator 2, the nipping rollers 1 and 1 ′ move in the conveying direction and speed of the hoop material 3. However, due to the frictional force between the hoop material and the sandwiching rollers 1 and 1'as the hoop material 3 travels, the hoop material is rotated according to the inclination angle θ of the rollers 1, 1 '. A pulling force is generated in a direction different from the running direction of the material 3, and the hoop material 3 is pulled by the nip roller side during operation and moves in the direction in which the force acts.

This control method of the meandering preventive device is provided with sensors 6 and 7 near the left and right ends of the hoop member 3 for detecting the meandering limit amount and the normal position, and detecting the direction opposite to the meandering direction. If the device detects the maximum amount of meandering, the nipping rollers 1, 1 ′ in the direction opposite to the meandering will cause the hoop member 3 to move.
The hoop material is sandwiched from above and below, and the hoop material is pulled to a regular position in the above-described manner of moving the hoop material, and gradually returns to the original position as the hoop material travels. When the detecting device detects the regular position, the nipping rollers 1, 1 '
, The pinching actuator 2 is turned off to release the pinching and free the hoop material. Regarding the meandering in the direction opposite to the above, the meandering is controlled by the pair of nipping rollers and the detection devices 6 and 7 provided on the side opposite to the meandering direction of the hoop material. As a result, the meandering prevention control of the hoop material 3 can be performed without making contact with the paste-coated surface of the central portion of the hoop material.

In such forced movement of the hoop material,
The pair of upper and lower nip rollers 1, 1 ′ and sensors 6, 7 as detection devices for detecting the meandering limit amount and normal position detection
The details of the meandering preventive device of the present invention provided with are shown in FIGS. 2 and 3. In FIG. 2, reference numerals 1 and 1'shown as a pair of upper and lower nip rollers, which can be freely rotated by twelve bearings, as is apparent from the sectional view shown in FIG.
It is held by the shafts 13 and 13 'at the tip of the levers 0 and 11. Further, the levers 10 and 11 are rotationally moved by the two pinching actuators attached to the frame 15. Specifically, a gear 9 fixed to a lever 10 at a fulcrum 19 for opening and closing the nip rollers 1 and 1 ',
The movement of the lever 11 is transmitted to the lever 10 via the gear 9'fixed to the lever 11 at the fulcrum 20, and the nip roller 1 moves up and down in conjunction with 1 'to perform the opening / closing operation. The parts of the left and right ends 5 of the hoop material 3 which are not coated with the paste are arranged so as to be sandwiched by the rollers 1, 1 ′ having a narrow width that does not come into contact with the paste 4, and the hoop material 3 is conveyed with respect to the conveying direction. Open outward and set tilt angle θ to 4
I am careful. Further, in the present embodiment, the detection of the meandering amount uses the sensors 6 and 7 composed of two pairs of photoelectric tubes, 6 detects the regular position of the hoop material 3, and 7 detects the meandering limit position of the hoop material. I did it. For example, when controlling the meandering within ± 1 mm, the two pairs of photoelectric tube sensors at both ends of the hoop member 3 are installed in the regular position of conveyance as shown in the layout of the detection sensors in FIG. Detection width 1
4 is set to 1 mm, and the sensor 7 is installed inside the hoop material. Further, the inclination angle θ indicated by 8 of the nip rollers 1, 1 ′ is preferably about 2 to 10 degrees at the conveying speed of the hoop material 3 of 50 to 200 mm / sec.

As described above, when the sensor 7 detects the meandering limit position while the hoop material 3 is conveyed in one direction, the actuator 2 is actuated to apply the paste by the sandwiching rollers 1 and 1'on the side opposite to the meandering. The part 5 that is not worn is sandwiched from above and below. Therefore, the hoop material 3 moves to the nip roller side. When the sensor 6 detects the regular position of the hoop material, the actuator 2 is turned off and the hoop material is released from the nip rollers 1, 1 '. Further, since the meandering prevention devices are provided corresponding to the left and right ends of the hoop member, if both are operated in the same manner as described above, precise meandering control becomes possible.

[0014]

According to the present invention, when a long hoop material, especially a hoop material is coated with paste on both sides and conveyed,
Since the left and right ends of the hoop material are controlled by being sandwiched by rollers from above and below, the meandering control can be performed even when the paste surface is not dried, and the paste can be applied to both surfaces of the hoop material in one step. Therefore, in the case of a battery electrode plate, the productivity is remarkably improved, and an extra drying device and space are unnecessary. Further, it is possible to control meandering when it is not desired to contact the surface of the adherend. Furthermore, when using a material with holes that connect the paste-coated surface and the non-coated surface such as punching metal as the hoop material, even if the paste is applied to the hoop material on each side, It is possible to prevent the paste from adhering to.

[Brief description of the drawings]

FIG. 1 is an explanatory schematic diagram showing an external structure of a meandering prevention device of the present invention.

FIG. 2 is a front view showing an embodiment of a pair of upper and lower nipping rollers of the present invention.

FIG. 3 is a sectional view of the nip roller.

FIG. 4 is a layout view showing an embodiment of the detection sensor.

FIG. 5 is a schematic perspective view showing a conventional meandering control device.

[Explanation of symbols]

 1 sandwiching roller 1'sandwiching roller 2 sandwiching actuator 3 hoop material 4 paste coating part 5 parts on both ends of the hoop material where paste is not coated 6 sensor 7 sensor 8 hoop material inclination angle to the conveying direction θ 9 gear 9 ′ gear 10 lever 11 Lever 12 Bearing 13 Shaft 13 'Shaft 14 Meandering detection width 15 Frame 16 Hoop material advancing direction 17 Lever 10 fulcrum bearing 18 Actuator fulcrum 19 Lever 10 fulcrum 20 Lever 11 fulcrum 21 Two pairs of wide rollers 22 Drive actuator 23 Meandering amount detection device 24 Tension roller

Claims (2)

[Claims] 1. A pair of rollers for sandwiching each of the left and right ends of a wide hoop member that can be forcibly moved from above and below, the pair of rollers being a driven roller having no driving force, and the axis of the pair of rollers being above and below. A meandering prevention device for the hoop material that is parallel to the pair of rollers and is inclined so as to open slightly outward from the parallel to the running direction of the hoop material. 2. A pair of rollers for sandwiching the left and right ends of a wide hoop member that can be forcibly moved from above and below, a pair of upper and lower levers attached to the tips of the rollers so that they can freely rotate, and this lever. A pair of driving sources for vertically moving the roller, a sensor for detecting the meandering amount of the hoop material and its direction, and a control unit for controlling the driving source by a signal output from the sensor. A roller, the axis of which is parallel to the upper and lower paired rollers, and is inclined so as to open slightly outward from the parallel to the running direction of the hoop material, and the meandering amount of the sensor. Of the hoop material that controls the driving source according to the detection signal output of the direction and the direction, and moves the lever up and down to sandwich and release the left and right ends of the hoop material by the pair roller. Line prevention device.