JPH0917420A - Inversion device for paste application hoop material - Google Patents

Abstract

PURPOSE: To reverse a hoop material without contacting a roller to an applying face by providing non-applied portions on right and left end portions of the hoop material when paste is continuously applied to both faces of the long hoop material, and supporting the non-applied portions by means of rollers so as to reverse the same. CONSTITUTION: A long hoop material 1 continuously passes in a hopper 3 storing paste 2 from down to up, the extra paste 2 is scraped off by a slit 4 so as to apply the paste 2 of a fixed thickness. This time, scrape devices 8, 8' are provided on the right and left of the slit 4 so as to scrape off the paste 2 of right and left end portions of the hoop material to secure the paste non-applied portions 5. This time, one pair of flange-like reverse roller 6, 6' radially equipped with contact pins 26 are rotated by a shaft 7 as synchronizing with the movement of the hoop material 2, the non-applied portions 5 of the hoop material end portions are successively held between the contact pins 26 and the flange portions so as to reverse the hoop material 1 by 180 degrees. Thereby, the hoop material is freely reversed so as to dry effectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reversing device used when introducing a paste-coated hoop material into a drying device or the like.

[0002]

2. Description of the Related Art Conventionally, in the manufacture of a long electrode plate for a battery, a desired powder and a paste mainly containing a binder solution are continuously applied to the hoop material while continuously transporting the hoop material with a roller.・ May be dry. At this time, as shown in FIG. 4, a hopper 3 containing a hoop material 1 and a paste 2 stored therein.
Through the inside from the bottom to the top, and the excess paste is scratched down by the slit 4 to apply the paste to a constant thickness. Until the paste dries, the paste surface is conveyed in one direction such as rising, descending, or horizontal without touching the solid surface. Therefore, the hoop material was never inverted and conveyed.

Due to the ceiling height of the building and the limitation of installation space in the case of horizontal feed, even if a reverse roller is provided, the feed speed of the hoop is set to be very small, and the position of the reverse roller is set. The process was such that the paste was dried by the time the coating paste reached.

After the paste was dried, it was inverted while the reversing roller 9 was in contact with the entire surface of the hoop material, and it was conveyed to the next step.

Therefore, the paste applying step has a very big problem that the moving speed is slow from the viewpoint of productivity. When the paste is applied to only one side of the hoop material by the transfer method, the surface on the opposite side where the paste is not applied can be inverted while being supported by the roller 9. However, when it is necessary to apply the paste to both sides of the hoop material, the application of the paste to the remaining other side must be performed in the next step. Further, as disclosed in Japanese Patent Publication No. 48-45151, compressed air is ejected from a large number of small holes provided on the surface of a hoop material conveying roller, and the hoop is generated by static pressure acting between the hoop material and the conveying roller. A method has also been put into practical use in which the material is levitated without contacting the rollers to freely change the conveying direction of the hoop material. In this case, it is necessary to select many conditions related to paste drying, such as the thickness, rigidity, width, weight, conveying speed of compressed hoop material, pressure of compressed air, and hot air temperature for drying. It ’s quite troublesome,
It was difficult to use it for any process easily.

[0006]

As described above, in the case where the paste is continuously applied to the hoop material, the thickness is smoothly adjusted through the slits, and the paste is dried, the mass production of the paste, the production of the paste, The place and time required for applying the paste to the hoop material and the slit passing step for adjusting the thickness do not matter so much. But,
Since the drying is performed to remove the solvent in the paste by evaporation, it takes a long time to complete the drying. On the other hand, rapid drying in a short time often causes cracks or peeling on the paste-coated surface.

Further, the paste coating surface cannot be contacted until it is dried, and the space for drying the paste coating hoop material is determined by the speed of transporting the hoop material and the drying time. For example, after applying the paste to the hoop material and drying it while raising the hoop material, a space corresponding to the distance traveled by the hoop material is required in the height direction until the paste is completely dried. .
Then, if there is a restriction on the space such as the ceiling height or length of the factory, the factory needs to be modified or rebuilt.

Therefore, there has been a need for a mechanism and a structure for introducing the hoop material into the dryer so that the drying conditions are not largely affected by the space for drying the paste, especially the ceiling height of the factory.

[0009]

According to the present invention, a hoop material is continuously conveyed by a roller, a desired powder and a paste mainly containing a binder solution are continuously applied to the hoop material, and the hoop material is passed through a slit. When adjusting and smoothing the thickness and drying,
The hoop material can be inverted and dried without bringing the solid surface into contact with the paste application surface.

As means for this, a structure is provided in which the paste is not applied to the left and right ends of the hoop material by a slit, for example, a scraping device is attached to the end part of the slit, or a paste width regulating device is provided in front of the slit. To the extent that the paste-coated hoop material is raised, lowered, or pulled in the horizontal direction, the left and right ends of the hoop material without the paste are not in contact with the paste-coated portion. It has a narrow width and is supported by a roller that can rotate freely while being inverted and dried. Then, when using a wide hoop material, when the weight of the coating paste is large, or when the transportation speed of the hoop material is increased, the left and right ends of the hoop material are synchronized with the rotation of the pair of reversing rollers together with the above means. The paste non-coating portion provided in the portion is structured such that the paste is sequentially held between the contact pin and the peripheral surface of the reversing roller, temporarily held, reversed and dried.

[0011]

The hoop material 1 is continuously conveyed by the pair of reversing rollers 6, 6 ', and the desired powder and the paste 2 mainly containing the binder solution are continuously applied to the hoop material 1 and smoothed. When the paste 2 is dried, the paste 2 is applied to the left and right end portions 5 of the hoop material 1 with an unadhered portion left by a width for being supported by the rollers 6, and the left and right end portions thereof are not in contact with the paste 2. When the hoop material 1 is bent by being supported by a roller having a narrow width or a roller 6 having a flange and inverted, the hoop material 1 is bent along the roller diameter, and that portion is bent along the roller, so that the shape caused by the bending is formed. Due to the change, it has some rigidity, and it can be inverted by 180 degrees without causing a large wrinkle so as to practically support it or deforming.

As a result, the reversing roller 6 does not come into contact with the paste coated surface, and the hoop material 1 is conveyed in the direction of 1
Invert by 80 degrees to free up space constraints
By repeating the inversion in a short drying oven, the productivity in the paste drying step can be improved.

However, if a thinner hoop material or a wider hoop material is used, the rigidity of the contact portion of the hoop material 1 with the reversing roller 6 becomes smaller. Further, when the conveyance speed of the hoop material 1 is increased, the non-contact reversal of the hoop material causes the weight of the hoop material, vibration, and the like to largely act on the central portion of the hoop material as an unfavorable force. The bending of the hoop material caused by bending along No. 6 could not withstand the increase in rigidity due to the change in shape, resulting in "deflection" and "wrinkles" in the hoop material. The hoop material may become untransportable due to the deformation of the hoop and the depression. Therefore, the left and right ends of the hoop material 1 are synchronized with the rotation of the reversing rollers 6 that support the left and right ends of the hoop material 1 so that the undesired force of the hoop material such as its own weight, vibration, or the like does not act on the center of the hoop material. It is possible to prevent the center portion of the hoop material 1 from dropping downwards and the like by sequentially gripping the contact pin 26 and the reversing roller 6.

[0014]

Embodiments of the reversing device of the present invention will be described below.

In FIG. 1, the hoop material 1 is moved vertically,
An example will be shown in which the pair of reversing rollers 6 is turned over to introduce into the drying step.

In this case, the hoop material 1 is passed through the hopper 3 containing the paste 2 from the bottom to the top, and the excess paste is scraped down by the slits 4 to apply a paste having a constant thickness. Then, the scraping devices 8 and 8'provided on the left and right of the slit 4 scrape off the paste on the left and right end portions of the hoop material 1 to secure the paste-uncoated portion of the paste 5. The hoop material 1 rises as the paste coating proceeds, and a pair of flange-shaped reversing rollers 6 provided at the uppermost portion near both ends of the shaft 7 which can freely rotate and which does not contact the paste coating portion. , 6'support the uncoated portion 5 of the hoop material 1 and turn it 180 degrees. As a result, the hoop material 1 can be inverted without contacting the paste coated surface. As a result, in the case of the conventional linear drying device, if the drying distance is 6 m,
If this reversing device is used, a substantial drying distance of 3 m is required for one reversal using this roller, and 2 m is required for reversing this roller. However, when a thin hoop material or a wide hoop material is used, the rigidity of the hoop material at the reversing roller portion may be weakened and the hoop material may be bent. Also,
When the transportation speed of the hoop material is increased, the weight of the hoop material acting on the central portion of the hoop material and other unfavorable forces are increased, and smooth moving operation becomes difficult.

Therefore, as shown in FIG. 2, while moving the hoop material 1 in the vertical direction, the left and right end portions (paste uncoated portion) of the hoop material are synchronized with the rotation of the reversing rollers 6 and 6 '. The contact pins 26 and the flange portions of the reversing rollers 6 and 6'may be gripped in order to be reversed. Even in this case, the process up to the part where the paste 2 is applied or grated is the same as described above. Then, in order to synchronize the feeding of the hoop material 1 and the rotation of the reversing rollers 6 and 6 ′, a flange-shaped reversing roller 6 fixed near the both ends of the reversing roller shaft 7 to a width that does not contact the paste 2. 6'is
The rotation is transmitted from the 14 drive motor by the gear trains 12 and 13 to rotate. Ten gripping devices are radially arranged on the reversing rollers 6 and 6 '. In this embodiment, eight sets of gripping devices 10 on one side are arranged at equal intervals. In the gripping device 10, the opening / closing cam 11 grips the left and right ends of the hoop member 1 from the part in contact with the reversing roller 6 to the part away from the hoop member 1, so that the hoop member 1 can be acted upon by an inconvenient force such as bending. I try not to.

The detailed structure of the gripping device 10 is shown in FIG. A cam follower 15 for transmitting vertical movement to the contact pin 26 by the opening / closing cam 11 is connected to the bracket 27 fixed to the end surface of the reverse roller 6 by the block 18. Sixteen slide bearings are connected to the block 18, and the cam follower 15 can be slid up and down by the slide shaft 17, but the rotation is stopped. Also,
A cam follower 20 for rotation driving is connected to a contact pin rotating slide shaft 22 supported by 19 bearings so that the hoop member 1 can be freely rotated by a holding structure at both left and right ends of the hoop member 1. The cam follower 20 is fitted in the cam groove 28 formed in the rotating cam of FIG. The cam groove 28 has a twisted groove shape so that the contact pin rotary slide shaft 22 smoothly rotates 90 degrees as the contact pin rotary slide shaft 22 slides up and down. When the block 18 moves up and down by the opening / closing cam 11, the contact pin rotary slide shaft 22 moves up and down, and the cam groove 28 formed in the rotary cam 21 and the cam follower 20 rotate 90 degrees to the right or left. The rotation directions of the rollers 6 and 6'are opposite to each other. Further, a block 24 is fixed to the rotary slide shaft 22 and a structure in which the pressure for pressing the left and right ends of the hoop material 1 is adjusted by the combination of the contact pin 26 and the spring 25.
Then, when the cam follower 15 is pushed down by the restricting operation of the opening / closing cam 11, the block 18 is lowered and the contact pin rotation slide shaft 22 is lowered, 20
The cam follower rotates 90 degrees by the groove 28 of the rotary cam, and the contact pin 26 contacts the end of the hoop material on the circumferential surface of the reversing roller 6. 2 if there is no regulation of the open / close cam 11
With the return spring 3 of 3, the contact pin rotary slide shaft 22 of 22 is raised, the rotation angle is also released, and it returns to the original position. As a result, before and after the left and right ends of the hoop material 1 come into contact with the reversing roller 6, the block 24 is made to stand by at a position where it does not obstruct the passage of the hoop material 1, and the reversing roller 6 has both left and right end parts of the hoop material 1. The opening / closing cam 11 is installed so as to grip this part from the point of contact with the contact pin, and the contact pin rotating slide shaft 22 rotates 90 degrees while descending, and the contact pin 26 causes the end of the hoop material 1 to move to the reverse roller 6. The hoop material is pressed down on the peripheral surface and moved in synchronism with the hoop material to prevent problems.

[0019]

As described above, in the present invention, when the paste is applied to the hoop material and is introduced into the continuous drying step by roller conveyance, the solid surface is not contacted with the applied surface of the paste or the like and dried. It can be done. In particular, at the left and right ends of the hoop material to which the paste has been applied, keep the unpasted area of the width required to support it with the reversing roller, and by supporting that part with the reversing roller and reversing it, Can be inverted without touching. Also, in order to stabilize the reversing operation and prevent problems, in synchronization with the rotation of the reversing roller,
Both left and right ends of the hoop material can be pressed sequentially against the roller peripheral surface with contact pins, and inverted and dried while temporarily chucking.

From this, according to the present invention, the hoop material can be freely inverted without coming into contact with the paste-coated surface of the hoop material, and the restriction of the space due to the drying time and the restriction of the form of the drying oven are alleviated. It is possible to improve the efficiency of space and dry form.

[Brief description of the drawings]

FIG. 1 is a schematic view of an apparatus for reversing a hoop material of the present invention while moving it in a vertical direction.

FIG. 2 is a schematic view of a device for vertically flipping the hoop material of the present invention while vertically gripping both ends of the hoop by a gripping device in synchronism with the rotation of the reversing roller.

FIG. 3 is a sectional view showing an example of the gripping device.

FIG. 4 is a schematic view of a conventional hoop material reversing device.

[Explanation of symbols]

 1 Hoop material 2 Paste 3 Hopper 4 Slit 5 Part where paste is not applied 6 Reversing roller 6'Reversing roller 7 Reversing roller shaft 8 Scraping device 8'Scraping device 9 Reversing roller 10 Holding device 11 Opening cam 12 Gear 13 Gear 14 Drive 14 Motor 15 Cam follower 16 Slide bearing 17 Slide shaft 18 Block 19 Bearing 20 Cam follower 21 Rotating cam 22 Contact pin Rotating slide shaft 23 Spring 24 Block 25 Spring 26 Contact pin 27 Bracket 28 Groove cam

Claims (3)

[Claims] 1. A device for reversing the moving direction of a long hoop material having paste applied on both sides, wherein two rollers, which are respectively in contact with non-paste parts provided at both left and right ends of the hoop material, are provided. This roller is provided with a paste coating characterized in that the non-pasted portion of the paste is pressed against a part of the peripheral surface by the pulling force of the hoop material, rotates in synchronization with the movement of the hoop material, and reverses the hoop material. Reversing device for wearing hoop material. 2. A device for reversing the moving direction of a long hoop material having paste applied on both sides, the disk-shaped roller being in contact with paste-unapplied portions provided at both left and right ends of the hoop material, It is equipped with a gripping device that is provided integrally with this roller and has a contact pin that opens and closes by a cam and presses the left and right ends of the hoop material against the circumferential surface of the roller.
The gripping device is a device for inverting a paste-coated hoop material, which presses the left and right ends of the hoop material with a contact pin against a part of the peripheral surface of the roller and moves in synchronization with the roller. 3. The gripping device includes a cam follower that moves a contact pin up and down in response to an opening / closing cam, a rotary cam that rotates the contact pin so that the contact pin is positioned on a roller peripheral surface, and a follower that responds to the rotation cam. The device for inverting the paste-coated hoop material according to claim 2, which is provided.