JPH0853245A - Meandering correcting device for sheet-like body - Google Patents

Abstract

PURPOSE:To provide a meandering correcting device for a sheet-like body, which is comparatively low-priced and has good responsiveness, and by which the need of an output generating device is eliminated, and little failure is caused even if the device is operated in a bad environment. CONSTITUTION:A meandering detecting roller 10 comprises right and left detecting rollers 13R, 13L which are rotated in contact with the side edge of a sheet-like body, and a guide roller 16 disposed between rotating shafts 12R, 12L for transmitting the rotation of the detecting rollers and the detecting rollers, and the rotation of the right or left rotating shaft 12R, 12L is transmitted to the right or left operating part 25R, 25L of a meandering correcting roller 24 through a transmission means such as a gear, feed screw rods 21R, 21L or the like. Simultaneously, the rotation of the right or left rotating shaft is changed in its direction by a transmission means such as gears 18R, 19, 18L or the like and similarly transmitted to the right or left operating part of the meandering correcting roller, so that both end parts of the meandering correcting roller are moved in the opposite directions to each other to control an angle of the rotating axis of the meandering correcting roller to the advancing direction of the sheet-like body. Thus, mechanical means are used to little cause failure and obtain good responsiveness.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a meandering correction device, and more particularly to a meandering correction device for correcting the meandering of a sheet-like body such as a running filter cloth, belt, film or paper.

[0002]

2. Description of the Related Art In a machine for handling a traveling sheet-like body, for example, a dehydrator using a traveling filter cloth belt, the filter cloth belt meanders. Therefore, it is necessary to provide a meandering correction device for correcting the meandering. is there. In the conventional meandering correction device, for example, one end of a support shaft of a meandering correction roller that guides the sheet-shaped body by changing its traveling direction is rotatably supported, and an electrical contact is provided near both side edges of the sheet-shaped body. A sensor is provided, the sensor detects the meandering of the sheet-like body, and the electrical detection signal is operated through a fluid pressure or electrical output generator on the free end side of the support shaft of the meandering correction roller. The output of the output generator in accordance with the detection signal of the sensor, the support shaft of the meandering correction roller is moved in the moving direction of the sheet-like body traveling in the operating part or in the direction opposite to the moving direction, There is one that corrects the meandering by adjusting the traveling direction of the sheet-shaped body.

[0003]

Since the conventional meandering correction device detects the meandering of the traveling sheet-like body by an electric sensor, it is liable to fail when used in a bad environment such as high humidity and high dust. There is. Further, since it is necessary to transmit an electrical detection signal to the operating end of the support shaft of the meandering correction roller via a fluid pressure or electrical output generator, the output generator becomes expensive, and therefore the meandering is performed. The drawback is that the correction device becomes expensive. An object of the present invention is to provide a sheet-like body meandering correction device which does not have the above-mentioned drawbacks of the conventional meandering correction device. It is an object of the present invention to provide a sheet-like meandering correction device which is relatively inexpensive and has good responsiveness even if it is operated at.

[0004]

The present invention employs the following structure as means for solving the above-mentioned problems. According to the configuration of the present invention, the sheet-like body is caused to come into contact with a plurality of traveling rollers arranged at intervals and the meandering correction roller so that the sheet-like body is caused to travel, and the sheet-like body is provided with a meandering detecting means provided near each side edge of the sheet-like body. In the sheet-like meandering correction device for correcting the meandering of the sheet-like body by adjusting the angle of the rotation axis of the meandering-correcting roller with respect to the traveling direction of the sheet-like body by the detection operation, the meandering detection means is provided. It is composed of a detection roller that rotates in contact with a portion near the side edge, and the angle of the rotation axis of the meandering correction roller with respect to the traveling direction of the sheet-shaped body can be adjusted only by the rotational force of the detection roller. A meandering correction device for a sheet-shaped body characterized in that In a preferred embodiment, as the meandering detection means, the left and right detection rollers whose cylindrical portion comes into contact with a portion near the side edge of the sheet-like body to rotate, and the left and right rotations that transmit the rotation of the detection roller. It is composed of a shaft and a guide roller provided between the left and right detection rollers, and the left and right detection rollers that rotate by contacting the cylindrical portion with a portion near the side edge of the sheet-like body. It is also possible to configure a meandering detection means with a rotation shaft that transmits the rotation of the detection roller, and to provide a guide roller for guiding the progress of the sheet-shaped body separately from the detection roller. It should be noted that the left and right detection rollers and the left and right rotation shafts that transmit the rotation of the detection rollers may be connected so as to always rotate together, or the cylindrical portion of the sheet-like body that travels in a predetermined direction may be connected. When the rotary shaft is rotated in the direction opposite to the rotation direction of the detection roller that rotates when the side edges contact, the left and right detection shafts are detected so that the rotation of the left and right rotation shafts is not transmitted to the left and right detection rollers. The roller and the left and right rotating shafts that transmit the rotation of the detection roller may be connected.

Further, in a preferred embodiment, (i) operation of the left or right end portion of the rotation axis of the meandering correction roller via mechanical transmission means for rotation of the rotation axis of the left or right detection roller. And (ii) the rotation of the rotation shaft of the left or right detection roller is changed at the same time by changing the rotation direction using a mechanical transmission means, and the operation unit at the right or left end of the rotation shaft of the meandering correction roller. Tell
The ends of both sides of the rotation shaft of the meandering correction roller are moved in opposite directions so that the angle of the rotation axis of the meandering correction roller with respect to the traveling direction of the sheet-shaped body can be adjusted. Then, the operating portions at both ends of the support shaft of the meandering correction roller can be moved in opposite directions, so that the response of the meandering correction can be improved. If the response of the meandering correction is not important, only the above (i) can be used. Furthermore, if a mechanical transmission means for transmitting the rotation of the rotary shaft of the left or right detection roller to the right or left rotary shaft by changing the rotation direction is provided in the guide roller, the space inside the guide roller can be effectively used. Therefore, the device can be made compact. This invention can express the structure as a method invention. That is, the configuration of the present invention is
The sheet-shaped body is caused to come into contact with a plurality of running rollers and a meandering correction roller which are arranged at intervals, and the meandering detection means provided in the vicinity of both side edges of the sheet-like body detect the meandering correction roller. In the meandering correction method for a sheet-like body, which adjusts the angle of the rotation axis of the sheet with respect to the traveling direction of the sheet-like body, a part near the side edge of the sheet-like body as a meandering detection means. A meandering detection roller that rotates in contact with the sheet-like body is used, and the angle of the rotation axis of the meandering correction roller with respect to the traveling direction of the sheet-like body is adjusted only by the rotational force of the meandering detection roller. There is a fix.

[0006]

EXAMPLE Example 1 is shown in FIGS. 1 to 4 and is an example applied to a dehydrator using a filter cloth belt according to the present invention. As shown in FIGS. 1 and 2, the dehydrator 1 includes a filter cloth belt 2 including a lower filter cloth belt 2a and an upper filter cloth belt 2b, a large number of squeezing rollers 3, a meandering detection roller 10, and a meandering correction. The filter cloth belt 2 is provided with rollers 24 and the like, supplies sludge S between the filter cloth belts 2a and 2b, and the filter cloth belts 2 in which the sludge S is sandwiched by the filter cloth belts 2a and 2b are connected to a large number of squeezing rollers 3. The sludge S is squeezed by the filter cloth belt 2 and the squeezing roller 3 while being brought into contact with the upper side or the lower side of the sludge S to squeeze out the water content in the sludge S, and the sludge S is made into a cake. To remove the cake.

First, the structure of the meandering detection roller 10 shown in FIGS. 3 and 4 will be described. Bearings mounted on both sides of the machine frame 11
R and 11L support the outer portions of the left and right rotary shafts 12R and 12L, the left and right rotary shafts 12R and 12L support the left and right detection rollers 13R and 13L, and the key K detects the detection rollers. 13R, 13L and rotating shafts 12R, 12L
Connect so that and rotate together. Rotating shaft 12R, 1
A ball bearing 15 fitted to the central portion and the inner end portion of 2L
The connecting frame 14 is supported by a and 15b, and the guide roller 16 is rotatably supported via ball bearings 15c fitted to the bosses 13Ra and 13La of the detection rollers 13R and 13L. The detection rollers 13R and 13L have the same diameter as the guide roller 16.
Bevel gears 17R, 17 are provided at the outer ends of the rotating shafts 12R, 12L.
L is fixed, and bevel gears 18R and 18L are fixed to the inner ends of the rotary shafts 12R and 12L.
L is engaged with a bevel gear 19 rotatably attached to a shaft 19a fixed to the center of the connecting frame 14. The weights 20R and 20L are fixed to the lower side of the connection frame 14, and the detection rollers 12R and 12L are fixed.
The connection frame 14 is prevented from rotating as L or the guide roller 15 rotates. A pair of bearings 22R and 22L in which the feed screw rods 21R and 21L are fixed to the machine frame outside the filter cloth belt 2.
Is rotatably supported by, and bevel gears 23R, 23L are fixed to the ends of the feed screw rods 21R, 21L on the detection roller 13R, 13L side, and bevel gears 23R, 23L and bevel gears 17R, 17L.
Mesh with. As shown in FIGS. 2 to 4, both ends of the shaft 24a of the meandering correction roller 24 have shaft supports 25R, 25
It is rotatably supported by L. The screw hole of the nut 26 is screwed into the feed screw rods 21R and 21L, and the shaft support 25
Insert the feed screw rods 21R and 21L into the groove holes 25a ₁ of the pair of protrusions 25a of R and 25L, position the nut 26 between the protrusions 25a, and fix the retaining plate 27 to the protrusions 25a with the bolts 28. Then, by rotating the feed screw rods 21R and 21L, the shaft support members 25R and 25L are moved to the feed screw rods 21R and 2L.
Be able to move along 1L. For example, a right-hand screw is used as the feed screw rod 21R.
Use the right-hand screw as L.

Next, the operation of the meandering correction device of the first embodiment will be described. (1) When the filter cloth belt 2 is not meandering,
The filter cloth belt 2 contacts only the guide roller 16 of the meandering detection roller 10 and runs. (2) In the state where the filter cloth belt 2 meanders to the left in the direction of travel, the portion near the left edge of the filter cloth belt 2 also contacts the left detection roller 13R of the meandering detection roller 10. And drive. Therefore, the left detection roller 13
The left rotary shaft 12R to which R is fixed rotates, and the rotary shaft 12R
Bevel gear 17R fixed to the outer side of rotates. Bevel gear 17
The bevel gear 23R meshing with the R rotates, and the bevel gear 23R
The left feed screw rod 21R to which is fixed is rotated, the nut 26 is moved by the rotation of the feed screw rod 21R, and the left shaft support 25R of the shaft 24a of the meandering correction roller 24 is attached to the filter cloth belt 2.
Move in the direction of travel. At the same time, the bevel gear 18R fixed to the inside of the left rotary shaft 12R rotates, the rotation of the bevel gear 18R is transmitted to the bevel gear 18L via the bevel gear 19, and the right rotary shaft to which the bevel gear 18L is fixed. 12L rotates in the direction opposite to the left rotary shaft 12R, the bevel gear 17L fixed to the rotary shaft 12L rotates, the bevel gear 23L meshed with the bevel gear 17L rotates, and the right bevel gear 23L fixed. Of the feed screw rod 21L rotates, the nut 26 moves by the rotation of the feed screw rod 21L, and the right shaft support 25L of the shaft 24a of the meandering correction roller 24 moves in the direction opposite to the traveling direction of the filter cloth belt 2. To do. Then, the meandering correction roller 24 is in the state of 24A shown by the chain double-dashed line, and the filter cloth belt 2 is in the state of moving to the right in the traveling direction.

(3) When the filter cloth belt 2 is meandering to the right in the direction of travel thereof, the portion near the right edge of the filter cloth belt 2 is the detection roller 13L on the right side of the meandering detection roller 10. Also comes into contact and travels. Therefore, the right rotation shaft 12L to which the right detection roller 13L is fixed rotates,
The bevel gear 17L fixed to the outside of the rotary shaft 12L rotates. The bevel gear 23L meshing with the bevel gear 17L is rotated, the right feed screw rod 21L to which the bevel gear 23L is fixed is rotated, and the nut 26 is moved by the rotation of the feed screw rod 21L and the meandering correction roller 24 is rotated. The right shaft support 25 of the shaft 24a
L moves in the traveling direction of the filter cloth belt 2. At the same time, the bevel gear 18L fixed inside the right rotating shaft 12L rotates,
The rotation of the bevel gear 18L is transmitted via the bevel gear 19 to the bevel gear 18R.
The left rotary shaft 12R to which the bevel gear 18R is fixed is rotated in the opposite direction to the right rotary shaft 12L, and the bevel gear 17R fixed to the rotary shaft 12R is rotated to rotate the bevel gear 17R.
The bevel gear 23R meshing with R rotates, the left feed screw rod 21R to which the bevel gear 23R is fixed rotates, and the feed screw rod 21R rotates.
The nut 26 moves by the rotation of R, and the meandering correction roller 2
The left shaft support 25R of the fourth shaft 24a moves in the direction opposite to the traveling direction of the filter cloth belt 2. Then, the meandering correction roller 24 enters the state of 24B indicated by the chain double-dashed line, and the filter cloth belt 2 moves to the left side in the traveling direction.

In the meandering correction device of the first embodiment, since the shaft supports 25R and 25L on both sides of the shaft 24a of the meandering correction roller 24 are positively moved in opposite directions, the meandering correction roller 24 corrects the meandering. Can be done quickly. In the meandering correction device of the first embodiment, the connecting frame 14
The weights 20R and 20L are fixed to the lower side of the detection roller 12
Connection frame 1 with rotation of R, 12L or guide roller 16
4, the guide roller 16 is divided into two parts at the center so that the central part of the connecting frame 14 is connected to a stationary part such as a machine frame as shown in FIG. You can also In the structure shown in FIG. 5, the guide roller 16 is composed of two rollers 16A and 16B, and the inner portions of the rollers 16A and 16B are rotatably supported by a ball bearing 15d fitted in the connecting frame 14, and the connecting frame 14 At the lower center of the
It is different from that of the first embodiment in that a is fixed and the rotation stop rod 14a is connected to a stationary portion of the machine frame to prevent the connection frame 14 from rotating, but it is implemented in other points. Same as Example 1.

The second embodiment is shown in FIG. 6 and is an example in which the present invention is applied to a filter cloth belt type dehydrator. The constructions of the filter cloth belt 2, the squeezing roller 3 and the like are the same as those of the first embodiment, and meandering detection is performed. The configurations of the roller 30 and the meandering correction roller 40 are different from those of the first embodiment. The meandering detection roller 30 shown in FIG. 6 includes bearings 11R and 11L mounted on both sides of the machine frame, and includes the left and right rotary shafts 1
The left and right detection rollers 13R and 13L are supported by the left and right rotary shafts 12R and 12L, which support the outer portions of the 2R and 12L.
The connecting cylinder 14A is supported by the ball bearings 15a and 15b fitted to the central portions and inner end portions of the rotating shafts 12R and 12L, and the guide roller 16 is supported by the left and right detection rollers 13R.
13L boss 13Ra, ball bearing 15c fitted to 13La
The bevel gears 17R and 17L are fixed to the outer ends of the rotary shafts 12R and 12L. On the left side in the running direction of the filter cloth belt 2, the left feed screw rod 21R is rotatably supported by a pair of bearings 22R, 22L fixed to the machine frame as in the first embodiment, and the feed screw rod 21R is supported. The bevel gear 23R is fixed to the end of the detection roller 13R side, and the bevel gear 23R and the bevel gear 17R are meshed with each other. The chain wheel Cw ₁ is fixed to the other end of the feed screw rod 21R. As the feed screw rod 21R, for example, a right-handed screw rod is used.

On the right side of the filter cloth belt 2 in the traveling direction, a rotary shaft 39 is rotatably supported by a pair of bearings 22L fixed to the machine frame outside the filter cloth belt 2, and the rotary shaft 39 is provided. The bevel gear 23L is fixed to the end on the right detection roller 13L side, and the bevel gear 23L and the bevel gear 17L are meshed with each other. The chain wheel Cw ₂ is fixed to the other end of the rotating shaft 39. The chain wheel Cw ₁ and the chain wheel Cw ₂ are connected by a chain Ch. The meandering correction roller 40 shown in FIG. 6 is rotatably supported by the support shaft 40a, and the right end of the support shaft 40a facing the running direction of the filter cloth belt 2 is attached to the machine frame.
0b is rotatably supported, and the end of the left support shaft 40a facing the running direction of the filter cloth belt 2 is supported by the shaft support 25R as in the first embodiment, and the screw hole 26a of the nut 26 is fed. The feed screw rod 21R is screwed into the screw rod 21R, the feed screw rod 21R is inserted into the slot of the pair of projecting portions of the shaft support 25R, the nut 26 is fitted between the projecting portions, and the retaining plate is fixed to the projecting portion with bolts. By rotating the feed screw rod 21R, the shaft support 25
R can move along the feed screw rod 21R.

Next, the operation of the meandering correction device according to the second embodiment will be described. (1) When the filter cloth belt 2 is not meandering,
This is the same as in the first embodiment. (2) In the state where the filter cloth belt 2 meanders to the left in the direction of travel, the portion near the left edge of the filter cloth belt 2 also contacts the left detection roller 13R of the meandering detection roller 10. And drive. Therefore, the left detection roller 13
R rotates, the left rotary shaft 12R fixing it rotates, and the bevel gear 17R fixed to the outside of the rotary shaft 12R rotates. The bevel gear 23R meshing with the bevel gear 17R rotates, the left feed screw rod 21R to which the bevel gear 23R is fixed rotates, and the nut 26 moves by the rotation of the feed screw rod 21R, and the meandering correction roller 24 moves. The shaft support 25 on the left of the shaft 24a
R moves in the advancing direction of the filter cloth belt 2, the meandering correction roller 40 becomes the state of 40A shown by the two-dot chain line, and the filter cloth belt 2 moves to the right side in the advancing direction. (3) In the state where the filter cloth belt 2 meanders to the right in the traveling direction, the portion near the right side edge of the filter cloth belt 2 also contacts the right detection roller 13L portion of the meandering detection roller 10. And drive. Therefore, the right detection roller 13
L rotates, the right rotating shaft 12L fixed to it rotates, and the bevel gear 17L fixed to the outside of the rotating shaft 12L rotates. The bevel gear 23L meshing with the bevel gear 17L rotates, and the rotating shaft 39 to which the bevel gear 23L is fixed rotates. The rotation of the rotary shaft 39 is transmitted to the left feed screw rod 21R via the chain wheel Cw ₂ , the chain Ch and the chain wheel Cw ₁ , and the feed screw rod 21R rotates in the opposite direction to the above, and by this rotation. Nut 26 moves,
The shaft support 25R of the shaft 40a of the meandering correction roller 40 moves in the direction opposite to the traveling direction of the filter cloth belt 2. And
The meandering correction roller 40 is in the state of 40B indicated by the chain double-dashed line, and the filter cloth belt 2 is in the state of moving to the left in the traveling direction.

Embodiment 3 is an example in which the present invention is applied to a dehydrator as shown in FIG. In the third embodiment, the meandering detection roller 10 of the meandering correction device of the first embodiment is replaced with the meandering detection roller 30 of the second embodiment, and the left and right feed screw rods 2 of the first embodiment are replaced.
1R and 21L bevel gears 23R and 23l are fixed to the ends on the opposite side to the bevel gears 42R and 42L, and bearings 43R and 43L attached to the machine frame are used for left and right rotary shafts 44R,
It supports the outer part of 44L, and the left and right rotary shafts 44R, 4
The inside of 4L is supported by the connecting frame 46 via the ball bearing 45,
Bevel gears 47R and 47L that mesh with the bevel gears 23R and 23l
Is fixed to the outer ends of the rotary shafts 44R and 44L.
Bevel gears 48R and 48L are fixed to the inner ends of 4R and 44L, and the bevel gears 48R and 48L are meshed with a bevel gear 49 rotatably attached to a shaft 49a attached to the connecting frame 46.

Next, the operation of the meandering correction device according to the third embodiment will be described. (1) When the filter cloth belt 2 is not meandering,
This is the same as in the first embodiment. (2) When the filter cloth belt 2 meanders to the left in the traveling direction, the portion near the left edge of the filter cloth belt 2 also contacts the detection roller 13R and travels. Therefore, the left detection roller 13R rotates, the left rotation shaft 12R that fixes it rotates, and this rotation causes the bevel gear 17 to rotate.
R is transmitted to the left feed screw rod 21R via the bevel gear 23R, the nut 26 is moved by the rotation of the feed screw rod 21R, and the left shaft support 25R of the meandering correction roller 24 moves in the traveling direction of the filter cloth belt 2. Move to. Simultaneously with the above movement, the rotation of the left feed screw rod 21R causes the bevel gear 42R and the bevel gear 47 to rotate.
R, rotary shaft 44R, bevel gear 48R, bevel gear 49, bevel gear 48L, rotary shaft 44L, bevel gear 47L and bevel gear 42L
The feed direction is transmitted to the right feed screw rod 21L by rotating the feed screw rod 21L, the nut 26 is moved by the rotation of the feed screw rod 21L, and the right shaft support 25L of the meandering correction roller 24 advances the filter cloth belt 2. Move in the opposite direction. And
The meandering correction roller 24 is in the state of 24A shown by the chain double-dashed line, and the filter cloth belt 2 is in the state of moving to the right in the traveling direction. (3) When the filter cloth belt 2 meanders to the right in the direction of travel, the portion near the right edge of the filter cloth belt 2 also contacts the detection roller 13L and travels. Therefore, the right detection roller 13L rotates, and the right rotation shaft 12L to which it is fixed rotates, and the rotation of this rotation shaft 12L is transmitted to the right feed screw rod 21L via the bevel gear 17L and the bevel gear 23L. Then, the nut 26 is moved by the rotation of the feed screw rod 21L, and the right shaft support 25L of the meandering correction roller 24 is moved in the traveling direction of the filter cloth belt 2. At the same time, the rotation of the right feed screw rod 21L causes the bevel gear 42L, the bevel gear 47L, the rotating shaft 44L, the bevel gear 48L, and the bevel gear 4 to rotate.
9, the bevel gear 48R, the rotating shaft 44R, the bevel gear 47R and the bevel gear 42R are changed in rotation direction and transmitted to the left feed screw rod 21R, and the nut 26 is moved by the rotation of the left feed screw rod 21R. The left shaft support 25R of the meandering correction roller 24 moves in the direction opposite to the traveling direction of the filter cloth belt 2. The meandering correction roller 24 is indicated by a two-dot chain line 2
4B, and the filter cloth belt 2 moves to the left in the traveling direction.

[0016]

The present invention has the following effects (a) to (e) by having the structure described in the claims. (A) In the meandering correction device for a sheet-like body according to claim 1, the meandering detecting means is composed of left and right detecting rollers that rotate in contact with a portion near a side edge of the sheet-like body. Since the angle of the rotation axis of the meandering correction roller with respect to the traveling direction of the sheet-like body can be adjusted only by the rotational force of the detection roller, the output generator used in the conventional meandering correction device becomes unnecessary, and It is possible to provide a sheet-like meandering correction device that is less responsive and has a high responsiveness even if it is operated in a bad environment such as dust and high humidity, at a relatively low cost. (B) As described in claim 2, the meandering detection means is provided with a left and right detection roller that rotates by contacting a cylindrical portion of the meandering portion with a portion near a side edge of the sheet-like body, and rotation of the detection roller. The rotation axis of the left and right detection rollers is constituted by a left and right rotation axis for transmitting and a guide roller provided between the left and right detection rollers, and the end portion of the rotation axis of the meandering correction roller is transmitted through a mechanical transmission means. If the device is configured so that the angle of the rotation axis of the meandering correction roller with respect to the traveling direction of the sheet-like body can be adjusted by transmitting it to the operation part of the, the left and right detection rollers and the guide roller are combined into one coaxial tubular body. And the structure of the device is simplified. (C) As described in claim 3, the rotation of the rotation shaft of the left or right detection roller is transmitted to the operation unit at the left or right end of the rotation shaft of the meandering correction roller through the mechanical transmission means. At the same time, the rotation of the rotation shaft of the left or right detection roller is transmitted to the operation unit at the end opposite to the rotation shaft of the meandering correction roller (right or left) by changing the rotation direction using a mechanical transmission means, If the operation parts at both ends of the rotation axis of the meandering correction roller are simultaneously moved in opposite directions to adjust the angle of the rotation axis of the meandering correction roller with respect to the traveling direction of the sheet-like body, the meandering correction can be shortened. It can be done in time, and the response of the meandering correction is very good. (D) As described in claim 4, when the mechanical transmission means for transmitting the rotation of the rotation shaft of the left or right detection roller to the right or left rotation shaft by changing the rotation direction is provided in the guide roller,
The space in the guide roller can be effectively used, and the meandering correction device can be made compact. (E) According to claim 5, the output generating device used in the conventional meandering correction method becomes unnecessary. Therefore, even if it is operated in a bad environment such as high dust and high humidity, there are few failures, and it is possible to perform meandering correction with good responsiveness.

[Brief description of drawings]

FIG. 1 is a side view showing an outline of a meandering correction device for a filter cloth belt of a dehydrator according to a first embodiment.

FIG. 2 is a front view showing an outline of a meandering correction device for the dehydrator shown in FIG.

FIG. 3 is an enlarged side view of a main portion of the meandering correction device for the dehydrator shown in FIG.

FIG. 4 is a front view of the meandering correction device of the dehydrator shown in FIG. 3, taken along the line A ₁ -A ₂ -A ₃ -A _4;

5 is a front view of another type of meandering detection roller of the meandering correction device, taken along a line similar to the line A ₁ -A _{2 in} FIG.

FIG. 6 is a front view showing a meandering correction device for a dehydrator according to a second embodiment in which the meandering detection roller and the like are crossed along a line similar to the line A ₁ -A ₂ -A ₃ -A _{4 in} FIG.

FIG. 7 is a front view of a meandering correction device for a dehydrator according to a third embodiment of the present invention in which a meandering detection roller and the like are crossed along a line similar to the line A ₁ -A ₂ -A ₃ -A _{4 in} FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Dewatering machine 2 Filter cloth belt 3 Squeezing roller 10, 30 Meandering detection roller 11R, 11L Bearing 12R, 12L Rotation shaft 13R, 13L Detection roller 14 Connection frame 15a-15d Ball bearing 16, 16A, 16B Guide roller 17R, 17L Bevel gear 18R, 18L Bevel gear 19a Shaft 19 Bevel gear 20R, 20L Weight 21R, 21L Feed screw rod 22R, 22L Bearing 23R, 23L Bevel gear 26 Nut 24, 40 Meandering correction roller 24a Shaft 25R, 25L Shaft support 25a Projection 26 Nuts 27 Clasps 28 Bolts 31 Rotating shafts 42R, 42L Bevel gears 43R, 43L Bearings 44R, 44L Rotating shafts 45 Ball bearings 46 Connection frames 47R, 47L Bevel gears 48R, 48L Bevel gears 49 Bevel gears S Sludge Ch Chains Cw ₁ , Cw ₂ chain wheels

 ─────────────────────────────────────────────────── ─── Continuation of front page (71) Applicant 594148335 Suzuki Akira 4-48-13 Sumida, Sumida-ku, Tokyo (72) Inventor Nobuo Furuya 4-29-4 Ryukakujidai, Sakae-cho, Inba-gun, Chiba Prefecture (72) Invention Akira Suzuki 4-8-13 Sumida, Sumida-ku, Tokyo (72) Inventor Takaaki Ito 2-18-7 Watada, Kawasaki-ku, Kawasaki-shi Asakura Industrial Co., Ltd. (72) Inventor Hideo Yamamoto Asagaya, Suginami-ku, Tokyo North 2-1-6

Claims (5)

[Claims] 1. A meandering detecting means provided in the vicinity of both side edges of the sheet-shaped body for detecting the meandering-correction rollers by causing the sheet-shaped body to come into contact with a plurality of running rollers and a meandering correction roller. In a sheet-like body meandering correcting device that adjusts an angle of a rotation axis of a meandering correcting roller with respect to a traveling direction of the sheet-like body by an operation, a meandering detecting means includes a sheet-like body side and a sheet-like body side. The detection roller is configured to rotate in contact with a portion in the vicinity of the edge, and the angle of the rotation axis of the meandering correction roller with respect to the traveling direction of the sheet-shaped body can be adjusted only by the rotational force of the detection roller. A sheet-like body meandering correction device characterized by the above. 2. A detection operation of a meandering detection means provided in the vicinity of a side edge of the sheet-shaped body, in which the sheet-shaped body is made to contact a plurality of traveling rollers arranged at intervals and a meandering correction roller for traveling. In the sheet-like body meandering correcting device that adjusts the angle of the rotation axis of the meandering correcting roller with respect to the traveling direction of the sheet-like body to correct the meandering of the sheet-like body, the meandering detection means has side edges of the sheet-like body. A left and right detection roller that rotates in contact with a portion in the vicinity of and the cylindrical portion, a left and right rotation shaft that transmits rotation of the detection roller, and a guide roller provided between the left and right detection rollers, The rotation of the rotation shaft of the left or right detection roller is transmitted to the operation unit at the end of the rotation shaft of the meandering correction roller via the mechanical transmission means, and the traveling direction of the sheet-shaped body of the rotation axis of the meandering correction roller. So that the angle to Meandering correction of a sheet body characterized by being. 3. A detection operation of a meandering detection means provided in the vicinity of a side edge of the sheet-shaped body, in which the sheet-shaped body is made to contact a plurality of traveling rollers arranged at intervals and a meandering-correction roller for traveling. Thus, in the sheet-like body meandering correcting device that corrects the meandering of the sheet-like body by adjusting the angle of the rotation axis of the meandering correcting roller with respect to the traveling direction of the sheet-like body, the meandering detection means has a cylindrical portion. It is composed of left and right detection rollers that rotate in contact with a portion near the side edge of the sheet-like body, a rotation shaft that transmits the rotation of the detection rollers, and a guide roller provided between the left and right detection rollers. The rotation of the rotation shaft of the right detection roller is transmitted to the operation unit at the left or right end of the rotation shaft of the meandering correction roller via the mechanical transmission means, and at the same time,
The rotation of the rotation shaft of the left or right detection roller is transmitted to the operation unit at the right or left end of the rotation shaft of the meandering correction roller by changing the rotation direction via a mechanical transmission unit, and the rotation of the meandering correction roller is transmitted. A sheet-shaped body characterized in that the ends of both sides of the moving shaft are moved in opposite directions to adjust the angle of the rotation axis of the meandering correction roller with respect to the traveling direction of the sheet-shaped body. Meandering correction device. 4. The guide roller is provided with a mechanical transmission means for transmitting the rotation of the rotation shaft of the left or right detection roller to the right or left rotation shaft by changing the rotation direction thereof. The sheet meandering correction device according to claim 3. 5. A detection operation of a meandering detection means provided in the vicinity of both side edges of the sheet-shaped body, in which the sheet-shaped body is caused to travel by contacting a plurality of traveling rollers arranged at intervals and a meandering correction roller. According to the sheet-like body meandering correction method for adjusting the meandering of the sheet-like body by adjusting the angle of the rotation axis of the meandering correcting roller with respect to the traveling direction of the sheet-like body, the side of the sheet-like body serves as the meandering detection means. A meandering detection roller that rotates in contact with a portion near the edge is used, and the angle of the rotation axis of the meandering correction roller with respect to the traveling direction of the sheet-like body is adjusted only by the turning force of the meandering detection roller. How to correct the meandering of the sheet.