WO2022113240A1

WO2022113240A1 - Cloth unfolding device for unfolding cloth, cloth loading device for conveying said unfolded cloth to next step

Info

Publication number: WO2022113240A1
Application number: PCT/JP2020/044035
Authority: WO
Inventors: 祐介前嶋; 敦也長谷川
Original assignee: 東都フォルダー工業株式会社
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2022-06-02
Also published as: JPWO2022113240A1

Abstract

Provided are: a cloth unfolding device for unfolding a cloth in order to quickly process the cloth; and a cloth loading device for conveying said unfolded cloth to the next step.　A cloth unfolding device (10) that, in order to unfold a cloth (W) having a right corner section (WR), a left corner section (WL), and one side (WH) therebetween, comprises: a left sensor unit (27) for detecting the left corner section; a right sensor unit (57) for detecting the right corner section; a left unfolding unit (20) that holds one side and moves in the left direction (L); and a right unfolding unit (50) that holds one side and moves in the right direction (R). When the left unfolding unit moves in the left direction while holding one side and the left sensor unit has detected the left corner section of the cloth, the left unfolding unit holds the left corner section of the cloth; and, when the right unfolding unit moves in the right direction while holding one side and the right sensor unit has detected the right corner section of the cloth, the right unfolding unit holds the right corner section of the cloth.

Description

[Replenishment based on Rule 26 11.12.2020] Cloth spreading device for spreading cloth and cloth feeding device for transporting the spread cloth to the next process

The present invention relates to a cloth spreading device for spreading cloth and a cloth feeding device for transporting the spread cloth to the next process.

The cloths handled in the so-called linen supply industry include linen products such as bath towels and face towels, and when these linen products are collected from customers, they are washed, ironed, and folded. The work of delivering to the customer through the process is repeated. At that time, the cloth is transported to a folding device that is folded into a predetermined shape according to the customer's request by being spread by the worker and thrown into the cloth loading device for transporting to the next process.

There are roughly two types of cloth loading methods, one is to find one end or both ends of the cloth and throw it in, and the other is to load one side of the cloth onto the conveyor automatically. It is a method to find both ends of the kind and automatically expand it. As such, Japanese Patent Application Laid-Open No. 2015-80566 is disclosed.

In the above invention, when the cloth is placed on the loading conveyor at a substantially central portion in the transport direction and the cloth is transported to a predetermined position in front of the loading machine body, the left and right sides of the cloth are squeezed toward the center of the cloth, and the cloth is squeezed. It is a cloth deploying device for depositing and delivering at the left and right rear ends of the cloth, and the catch member holding the left and right rear ends of the cloth is placed at a position lower than the positions of the left and right deploying members. Arranged on the main body side, when the deploying member moves to the standby position and the catch member moves to the deposit position between them, it comes into contact with the left and right rear ends of the cloth and is higher than the deploying member. The lifting means is placed on the main body side of the loading machine side, and the left and right rear ends of the cloth lifted by the lifting means are held by the deploying member as close to the tip as possible, and deployed by the operation of the deploying member. It is a measure of composition.

According to the above invention, in a loading machine that automatically deposits and delivers cloth, one side of the tip of the cloth is linear by holding a portion of the end of the cloth as close to the rear end as possible by a catch member. It is possible to keep the unfolded state of and put it in.

However, there is a demand from the so-called linen industry to quickly process cloths such as sheets, towels, blankets, face towels and bath towels, and the cloth spreading device that expands the cloths that perform such treatment and its expansion. There is a demand for a cloth loading device that transports cloth to the next process.

Japanese Unexamined Patent Publication No. 2015-80566

The present invention has been made by paying attention to the above points, and the object thereof is a cloth spreading device for spreading cloth for quickly processing cloth such as sheets, towels, blankets, face towels and bath towels. It is to provide the cloth input device which carries the expanded cloth to the next process.

In order to solve the above-mentioned problems, the cloth spreading device of the first aspect has a left sensor part that detects the left corner part and a right corner part in order to spread the cloth having one side between the right corner part and the left corner part. The right sensor part that detects the part, the left expansion part that holds one side and moves to the left, the right expansion part that holds one side and moves to the right, and the left expansion part holds one side and moves to the left. Moving in the direction, when the left sensor part detects the left corner part of the cloth, the left expansion part sandwiches the left corner part of the cloth, and the right expansion part holds one side and is right. Moving in the direction, when the right sensor portion detects the right corner portion of the cloth, the right expansion portion sandwiches the right corner portion of the cloth.

Further, the cloth spreading device according to the second aspect has, in the first aspect, a spreading drive unit that drives the left expanding portion to the left and the right expanding portion to the right, and the expanding drive portion is provided. By driving, the left expansion portion is moved to the left, and the right expansion portion is moved to the right.

Further, in the cloth spreading device of the third viewpoint, in the second viewpoint, the left expanding portion moves to the left by the expanding drive unit while holding one side, and the left soft roll portion and the left soft roll portion move downward. When the part moves down, the left free roller part that sandwiches the left soft roll part and the left corner part, and the right expansion part move to the right by the expansion drive part while holding one side, and move down to the right. It has a soft roll portion and a right free roller portion that sandwiches the right soft roll portion and the right corner portion when the right soft roll portion moves downward, and the left sensor portion detects the left corner portion and left. The soft roll portion and the left free roller portion fix the left corner portion, and when the right sensor portion detects the right corner portion, the right soft roll portion and the right free roller portion fix the right corner portion.

Further, in the cloth spreading device of the fourth aspect, in the second viewpoint, the left expanding portion has a left roll portion, a left roller portion, and a left sensor portion that are moved to the left by the expanding drive portion while holding one side. However, the left fixed chuck that sandwiches the detected left corner part, the right expansion part, the right roll part that moves to the right by the expansion drive part while holding one side, the right roller part, and the right sensor part detect It has a right fixed chuck that sandwiches the right corner part, and the left roll part and the left roller part move to the left while sandwiching one side, and the left fixed chuck has the left corner detected by the left sensor part. While sandwiching the portion, the right roll portion and the right roller portion move to the right while sandwiching the one side, and the right fixed chuck sandwiches the detected right corner portion by the right sensor portion.

Further, the cloth loading device of the fifth viewpoint has the cloth spreading device of the first viewpoint to the fourth viewpoint.

Since the present invention is configured and acts as described above, it is a cloth spreading device for spreading cloth for quickly processing cloth such as sheets, towels, blankets, face towels and bath towels. It is possible to provide a cloth feeding device for transporting the expanded cloth to the next process.

A is a side view of a loading device having a cloth spreading device. B is a plan view in which a part of the loading device having the cloth spreading device is omitted. A is a front view of a loading device having a cloth spreading device. B is a partially enlarged view of the front of A. C is a conceptual diagram showing a state in which the center of the loading device and the center of the cloth are misaligned when the cloth is attached to the loading clamp. A is a side conceptual diagram showing a state in which the cloth is attached to the cloth spreading device. B is a plan view showing a state in which the cloth is attached to the cloth spreading device. A is a front conceptual diagram showing a state in which the cloth is attached to the cloth spreading device. B is an enlarged conceptual diagram in which a part of A is enlarged. A is a front conceptual diagram showing a state in which the cloth attached to the cloth spreading device is to be spread. B is an enlarged view of the left expansion portion in the state of A. C is an enlarged view of the right expansion portion in the state of A. D is a plan view showing a state in which the cloth attached to the cloth spreading device is to be spread. A is a front conceptual diagram showing a state in which the cloth attached to the cloth spreading device is being spread. B is an enlarged view of the left expansion portion in the state of A. C is an enlarged view of the right expansion portion in the state of A. D is a plan view showing a state in which the cloth attached to the cloth spreading device is being spread. A is a front conceptual diagram showing a state in which the cloth attached to the cloth spreading device is spread. B is an enlarged view of the left expansion portion in the state of A. C is an enlarged view of the right expansion portion in the state of A. D is a plan view showing a state in which the cloth attached to the cloth spreading device is spread. A is a side conceptual diagram showing a state in which the hem portion of the cloth is about to be sucked by the suction portion. B is a side conceptual diagram showing a state in which the hem portion of the cloth is sucked by the suction portion. C is a plan view of B. A is a side conceptual diagram showing a state in which the cloth is to be placed on the conveyor. B is a plan view showing a state in which the cloth is to be placed on the conveyor. A is a front conceptual diagram showing a state in which a tilted cloth is to be corrected by a correction device. B is a front conceptual diagram showing a state in which the tilted cloth is corrected by the correction device. A is the front of the loading device having the cloth spreading device of the second embodiment. B is a front enlarged view of A. A is a front conceptual diagram showing a state of being attached to the cloth spreading device of the second embodiment. B is an enlarged view of the left expansion portion in the state of A. C is an enlarged view of the right expansion portion in the state of A. D is a plan view showing a state of being attached to the cloth spreading device. A is a front conceptual diagram showing a state in which the cloth attached to the cloth spreading device of the second embodiment is to be spread. B is an enlarged view of the left expansion portion in the state of A. C is an enlarged view of the right expansion portion in the state of A. D is a plan view showing a state in which the cloth attached to the cloth spreading device of the second embodiment is to be spread. A is a front conceptual diagram showing a state in which the cloth attached to the cloth spreading device of the second embodiment is spread. B is an enlarged view of the left expansion portion in the state of A. C is an enlarged view of the right expansion portion in the state of A. D is a plan view showing a state in which the cloth attached to the cloth spreading device of the second embodiment is spread.

Hereinafter, the cloth spreading device 10 of the first embodiment will be described with reference to the illustrated embodiment. The cloth spreading device 10 of the first embodiment is arranged in a loading device 500 for loading the cloth W expanded by the cloth expanding device 10 into a folding device (not shown), which is a next step. It constitutes a part of 500.

In the cloth spreading device 10, a worker (not shown) simply searches for one side WH of the cloth W such as sheets, towels, blankets, face towels and bath towels, and attaches the one side WH to the cloth spreading device 10. While spreading the cloth W flatly, the cloth W is conveyed to the next step so as to match the central portion 501 in the width direction of the loading device 500 with the central portion WC of the cloth W. Therefore, when the cloth W is attached to the cloth spreading device 10 in the loading device 500, the central portion 501 in the width direction of the loading device 500 and the central portion WC of the cloth W are not aligned with each other. It can be attached.

The cloth spreading device 10 is arranged between the pair of input clamps 300 and 300 in the front view (see FIG. 2B). The pair of loading clamps 300, 300 is for temporarily hanging the cloth W, and is processed next by an operator (not shown) during the step of spreading the cloth in the cloth spreading device 10 as described later. This is for hanging the cloth W to be hung in advance.

The loading clamp 300 has a claw portion 310 and a rotatably rotating clamp portion 320, and holds the cloth W between the claw portion 310 and the clamp portion 320. The cloth W can be hung between the claw portion 310 and the clamp portion 320, and the cloth W held between the claw portion 310 and the clamp portion 320 by turning the clamp portion 320 backward. Can be released. This will be described later.

The cloth spreading device 10 has a left expanding portion 20 that moves in the left direction L in the front view and a right expanding portion 50 that moves in the right direction R in the front view by the expansion drive unit 70 described later.

The left expansion portion 20 includes a thin plate-shaped left bracket portion 21 as a main body, and a left mounting portion 22 for mounting a left soft roll portion 23 attached to the left bracket portion 21 so as to be movable up and down. When the wheel-shaped left soft roll portion 23 and its left soft roll portion 23, which are crushed and deformed when moving downward (moving downward; the same applies hereinafter), are prevented from rotating, and the left soft roll portion 23 moves downward. It also has a left soft roll portion 23 and a wheel-shaped left free roller portion 25 that sandwiches the cloth W. Further, the left bracket portion 21 has a left cloth detection sensor 26 for detecting the presence of the cloth W. Further, below the left mounting portion 22, a left sensor portion 27 capable of detecting the left corner portion WL of the cloth W is provided.

The right expansion portion 50 includes a thin plate-shaped right bracket portion 51 as a main body, and a right mounting portion 52 for mounting a right soft roll portion 53 attached to the right bracket portion 51 so as to be movable up and down. When the wheel-shaped right soft roll portion 53 and its right soft roll portion 53 are crushed and deformed when they move downward, their rotation is blocked, and when the right soft roll portion 53 moves downward, the right soft roll portion 53 and the cloth It has a wheel-shaped right free roller portion 55 that sandwiches the type W. Further, the right bracket portion 51 has a right cloth detection sensor 56 that detects the presence of the cloth W. Further, below the right mounting portion 52, there is a right sensor portion 57 capable of detecting the right corner portion WR of the cloth W. As described above, the left expansion portion 20 and the right expansion portion 50 have a substantially symmetrical configuration.

The expansion drive unit 70 has a belt portion 71 having an annular shape in a plan view, and a driving portion 72 of motors that are driven to rotate the belt portion 71. The expansion drive unit 70 has a base unit 75, and the left expansion unit 20 and the right expansion unit 50 move along the base unit 75 in the left direction L or the right direction R, respectively. The left bracket portion 21 of the left expansion portion 20 is attached to one portion 71A of the belt portion 71, and the right bracket portion 51 of the right expansion portion 50 is attached to the other portion 71B of the belt portion 71. The position of the one portion 71A and the position of the other portion 71B in the belt portion 71 are arranged in the belt portion 71 of the plan view ring with a deviation of half a circumference. Therefore, when the belt portion 71 rotates in the predetermined direction S, the left expanding portion 20 expands in the left direction L and the right expanding portion 50 expands in the right direction R symmetrically.

Further, as described above, the left expansion unit 20 and the right expansion unit 50 are attached to the expansion drive unit 70, and the expansion drive unit 70 further moves from the front f to the rear r direction in the charging device 500. It is attached to the front-back moving portion 510 for the purpose. The front-rear movement portion 510 is a front-rear drive portion 520 composed of motors, a front-rear belt portion 530, a bracket portion 540 attached to the front-rear belt portion 530, and a rail portion that regulates the movement of the bracket portion 540 in the front-rear direction. It has 550 and. The front / rear drive unit 520 is connected to the drive belt 521, the pulley 522 is rotated by driving the drive belt 521, the front / rear belt unit 530 is driven, and the bracket unit 540 is a cloth spreading device along the rail unit 550. The left expansion portion 20 and the right expansion portion 50 in 10 move from the front f to the rear r direction.

Attach the cloth W to the cloth spreading device 10 having the above configuration. Specifically, an operator (not shown) placed one side WH of the cloth W between the pair of loading clamps 300 and 300 in an open state and the pair of loading clamps 300 and 300, and the left soft roll portion 23. And, it is placed in the upper and lower gaps between the left free roller portion 25 and the upper and lower gaps between the right soft roll portion 53 arranged above and the right free roller portion 55. Here, the operator does not need to align the central portion WC of the cloth W with the central portion 501 of the loading device 500.

Next, the left cloth detection sensor 26 and the right cloth detection sensor 56 detect the presence of the cloth W, respectively. The left cloth detection sensor 26 and the right cloth detection sensor 56 place the cloth W between the left soft roll portion 23 and the left free roller portion 25, the right soft roll portion 53 arranged above, and the right. When it is detected that it is placed between the free roller portion 55, the left soft roll portion 23 and the right soft roll portion 53 arranged above both move downward, and one side WH of the cloth W is moved to the left soft. It is sandwiched between the roll portion 23 and the left free roller portion 25. Further, it is sandwiched between the right soft roll portion 53 and the right free roller portion 55. At this time, the flexible left soft roll portion 23 and the right soft roll portion 53 are slightly deformed, and their rotation is prevented. In this state, one side WH of the cloth W is sandwiched between the left soft roll portion 23 and the left free roller portion 25, and is sandwiched between the right soft roll portion 53 and the right free roller portion 55.

At that time, by rotating the clamp portion 320 backward (see FIG. 3A), the space between the claw portion 310 and the clamp portion 320 is opened, and the loading clamps 300 and 300 are the cloth held by the loading clamps 300 and 300. Open class W. In this state, one side WH of the cloth W is sandwiched between the left soft roll portion 23 and the left free roller portion 25, and the cloth W sandwiched between the right soft roll portion 53 and the right free roller portion 55 is sandwiched in the front-rear direction. The moving unit 510 starts moving in the rear r direction (see FIGS. 4A and 4B). At this time, both the left soft roll portion 23 and the right soft roll portion 53 that have moved downward are slightly deformed (see FIG. 4B).

After that, both the left soft roll portion 23 that has been moved downward and deformed and the right soft roll portion 53 move slightly upward (move upward. The same applies hereinafter), and the left soft roll portion 23 and the right soft roll portion that have been deformed and deformed. The roll portion 53 returns to the original circular shape (see FIGS. 5B and 5C). At that time, the expansion drive unit 70 moves the left expansion unit 20 in the left direction L in the front view, and at the same time, the right expansion unit 50 moves in the right direction R in the front view. At this time, one side WH of the cloth W is held between the left soft roll portion 23 and the left free roller portion 25 so as to be rotatable, while the right soft roll portion 53 and the right free roller portion 55. Between, they are held rotatably.

In FIG. 2C, the cloth W is attached to the right side. In this state, when the left expansion portion 20 moves to the left direction L in the front view and at the same time the right expansion portion 50 moves to the right direction R in the front view, the left sensor portion 27 arranged below the left mounting portion 22 becomes available. The left corner WL of the cloth W is detected. Specifically, the light beam emitted from the left sensor unit 27 is applied to the cloth W, and the cloth W is detected while the light ray is reflected, so that the left corner portion WL of the cloth W is not yet detected. However, when the left expansion portion 20 further moves and the cloth W passes through the region of the light beam emitted from the left sensor unit 27, the light ray emitted from the left sensor unit 27 is scattered without being reflected. The presence of the left corner WL is detected.

A slight time lag occurs between the position of the light beam emitted from the left sensor unit 27 and the position of the left soft roll unit 23. At this time, the left soft roll unit 23 moves downward again, and the left corner portion of the cloth W The WL is fixed by sandwiching and fixing the left soft roll portion 23 and the left free roller portion 25 (see FIG. 6AB). In this state, the right sensor portion 57 arranged below the right mounting portion 52 has not yet detected the right corner portion WR of the cloth W.

While the left corner portion WL of the cloth W is sandwiched and fixed by the left soft roll portion 23 and the left free roller portion 25, the left expansion portion 20 is moved to the left L by the expansion drive portion 70 and is expanded to the right. When the unit 50 moves in the right direction R by the expansion drive unit 70, the right sensor unit 57 arranged below the right mounting unit 52 detects the right corner portion WR of the cloth W. Specifically, the light beam emitted from the right sensor unit 57 is applied to the cloth W, and the cloth W is detected while the light ray is reflected. Therefore, the right corner WR of the cloth W is not detected yet. However, when the right expansion part 50 moves further and the cloth W passes through the area of the light ray emitted from the right sensor part 57, the light ray emitted from the right sensor part 57 is scattered without being reflected, so that the right corner The presence of the part WR is detected.

A slight time lag occurs between the position of the light beam emitted from the right sensor unit 57 and the position of the right soft roll unit 53. At this time, the right soft roll unit 53 moves downward again, and the right corner portion WR of the cloth W Is sandwiched and fixed by the right soft roll portion 53 and the right free roller portion 55.

At this time, the expansion drive unit 70 moves the left expansion unit 20 in the left direction L, while the right expansion unit 50 moves in the right direction R, and both of these movements are symmetrical. The left corner portion WL is sandwiched and fixed by the left soft roll portion 23 and the right soft roll portion 53, and the right corner portion WR of the cloth W is sandwiched and fixed by the right soft roll portion 53 and the right free roller portion 55. Then, the central portion WC of the cloth W and the central portion 501 of the loading device 500 coincide with each other, and the cloth W is expanded (see FIG. 7).

The hem portion WS of the expanded cloth W is sucked into the suction portion 570 (see FIG. 8AB). As a result, the partial WS flutters and the entangled state is eliminated. Further, the cloth W is further moved in the rear r direction by the front-rear direction moving portion 510, and is placed on the conveyor 560 (see FIG. 9AB). The cloth W is further conveyed to the rear by the transport conveyor 560, and the hem portion WS of the cloth W is maintained in a state of being sucked by the suction portion 570. At that time, the left side W1 of the spread cloth W may be tilted to the right (see FIG. 10AB). In this case, the correction device 580, which can be corrected by the correction device 580, has a plurality of, for example, 16 left sensors 581, for example 16 right sensors 585, and a correction belt 587.

For example, when the left side W1 of the spread cloth W is tilted to the right, 12 out of 16 left sensors 581 react and 14 out of 16 right sensors 585 react. In this case, the correction belt 587 is moved in the arrow T direction (direction in which the sensor response is small) by a control unit (not shown), and the inclination of the cloth W in contact with the correction belt W is corrected. Needless to say, when the right side W2 is tilted, it acts in the opposite direction. After that, in the cloth W, the correction belt 587 moves to the left or right until the number of reacting sensors in the left sensor 581 and the number of reacting sensors in the right sensor 585 become the same, and the cloth W is tilted. To fix. After that, the cloth W is transferred to the next process by the transfer conveyor 560.

While the cloth W is expanded in the above step, a worker (not shown) can attach the next cloth W to the pair of input clamps 300, 300 in advance. Find one side WH of the cloth W and attach the one side WH to the pair of input clamps 300 and 300. After that, the left soft roll portion 23, the left free roller portion 25, the right soft roll portion 53, and the right free roller portion 55 are arranged between the pair of input clamps 300 and 300, and the above cycle is repeated again. ..

Next, the cloth spreading device 100 of the second embodiment will be described with reference to the illustrated embodiment. The cloth spreading device 100 of the second embodiment is arranged in a loading device 600 for loading the cloth W expanded by the cloth expanding device 100 into a folding device (not shown), which is the next step. It constitutes a part of the device 600.

In the cloth spreading device 100, a worker (not shown) simply searches for one side WH of the cloth W such as sheets, towels, blankets, face towels and bath towels, and attaches the one side WH to the cloth spreading device 10. The cloth W can be spread flat so that the central portion 601 of the loading device 600 in the width direction and the central portion WC of the cloth W are aligned with each other. This point is the same as the cloth spreading device 10 of the first embodiment. The difference from the loading device 500 is whether the cloth spreading device 10 of the first embodiment is arranged or the cloth spreading device 100 of the second embodiment is arranged. Therefore, in the cloth spreading device 10 of the first embodiment and the cloth spreading device 100 of the second embodiment, the same reference numerals may be given and the description thereof may be omitted.

The cloth spreading device 100 is arranged between the pair of input clamps 300 and 300 in the front view. The pair of loading clamps 300, 300 is for temporarily hanging the cloth W, and as will be described later, during the process of spreading the cloth W in the cloth spreading device 100, a worker (not shown) processes next. This is for hanging the cloth W to be hung in advance. The pair of input clamps 300 and 300 have already been described, and the same reference numerals may be given and the description thereof may be omitted.

The cloth spreading device 100 has a left expanding portion 120 that moves in the left direction L in the front view and a right expanding portion 150 that moves in the right direction R in the front view by the expansion drive unit 70 described above. The same configuration as that of the cloth spreading device 10 may be designated by the same reference numerals and the description thereof may be omitted.

The left expansion portion 120 includes a thin plate-shaped left bracket portion 121 as a main body, a left mounting portion 122 for mounting a left roll portion 123 attached to the left bracket portion 121, which will be described later, so as to be movable up and down, and a lower portion. It has a wheel-shaped left roll portion 123 that moves.

Further, the left expansion portion 120 has a wheel-shaped left roller portion 125. In the wheel-shaped left roller portion 125, when the left roll portion 123 moves downward, the downwardly moved left roll portion 123 and the left roller portion 125 sandwich the cloth W, but the left roll portion 123 and the left roll portion 123 The left roller portion 125 rotates together so that the cloth W can be moved. Further, below the left mounting portion 122, there is a left sensor portion 27 capable of detecting the left corner portion WL of the cloth W. Further, the left bracket portion 121 has a left cloth detection sensor 26 for detecting the presence of the cloth W. The left sensor unit 27 and the left cloth detection sensor 26 have the same configuration as the cloth spreading device 10.

Further, the left bracket portion 121 has a left fixed chuck 130 arranged inside the left roll portion 123 and the left roller portion 125. The left fixing chuck 130 has a left first member 131 and a left second member 132, and the left first member 131 arranged above moves downward to sandwich and fix the left corner portion WL of the cloth W. That is.

Further, the right expansion portion 150 includes a thin plate-shaped right bracket portion 151 as a main body and a right mounting portion 152 for mounting the right roll portion 153 attached to the right bracket portion 151 so as to be movable up and down. It has a wheel-shaped right roll portion 153 that moves downward.

Further, the right expansion portion 150 has a wheel-shaped right roller portion 155. In the wheel-shaped right roller portion 155, when the right roll portion 153 moves downward, the downwardly moved right roll portion 153 and the right roller portion 155 sandwich the cloth W, but the right roll portion 153 and the right roll portion 153 The right roller portion 155 rotates together so that the cloth W can be moved. Further, below the right mounting portion 152, there is a right sensor portion 57 capable of detecting the right corner portion WR of the cloth W. Further, the right bracket portion 151 has a right cloth detection sensor 56 that detects the presence of the cloth W. The right sensor unit 57 and the right cloth detection sensor 56 have the same configuration as the cloth spreading device 10 (see FIG. 12).

Further, the right bracket portion 151 has a right fixed chuck 160. The right fixing chuck 160 has a right first member 161 and a right second member 162, and the right first member 161 arranged above moves downward to fix the right corner portion WR of the cloth W. Is.

The expansion drive unit 70 has a belt portion 71 having an annular shape in a plan view, and a driving portion 72 of motors that are driven to rotate the belt portion 71. Further, the expansion drive unit 70 has a base unit 75, and the left expansion unit 120 and the right expansion unit 150 move along the base unit 75 in the left direction L or the right direction R, respectively. Further, the left bracket portion 121 of the left expansion portion 120 is attached to one portion 71A of the belt portion 71, and the right bracket portion 151 of the right expansion portion 150 is attached to the other portion 71B of the belt portion 71. The position of the one portion 71A and the position of the other portion 71B in the belt portion 71 are arranged in the belt portion 71 of the plan view ring with a deviation of half a circumference. Therefore, when the belt portion 71 rotates in a predetermined direction, the left expanding portion 120 and the right expanding portion 150 expand symmetrically.

Further, as described above, the left expansion unit 120 and the right expansion unit 150 are attached to the expansion drive unit 70, but the expansion drive unit 70 is for moving from the front f to the rear r direction in the charging device 500. The front-rear movement part 510 is attached to the front-rear direction movement part 510, and the front-rear direction movement part 510 is a front-rear drive part 520 composed of motors, a front-rear belt part 520, a bracket part 530 attached to the front-rear belt part 520, and a bracket part thereof. It has a rail portion 540 that regulates the movement of the 530 in the front-rear direction. This point is the same as that of the first embodiment.

As described above, regarding the difference between the cloth spreading device 100 of the second embodiment and the cloth spreading device 10 of the first embodiment, the left expanding portion 20 is replaced with the left bracket portion 21 and the left soft roll portion 23. The left expanding portion 120 has a left roll portion 123, a left roller portion 125, and a left fixed chuck 130. Further, the right expansion portion 50 has a right bracket portion 51, a right roll portion 153, a right roller portion 155, and a right fixed chuck 160 instead of the right soft roll portion 53.

Attach the cloth W to the cloth spreading device 100 having the above configuration. Specifically, an operator (not shown) arranges one side WH of the cloth W between the pair of loading clamps 300 and 300 in an open state and the pair of loading clamps 300 and 300, and the left roll portion 123. , The upper and lower gaps between the left roller portion 125, the gap between the left first member 131 and the left second member 132 in the left fixed chuck 130, and the upper and lower gaps between the right roll portion 153 and the right roller portion 155. It is arranged in the gap between the right first member 161 and the right second member 162 in the right fixed chuck 160. Here, the operator does not need to align the central portion WC of the cloth W with the central portion 601 of the loading device 600. This is the same as in the first embodiment.

Next, the left cloth detection sensor 26 and the right cloth detection sensor 56 detect the presence of the cloth W, respectively. The left cloth detection sensor 26 and the right cloth detection sensor 56 detect that the cloth W is arranged in each of the above-mentioned gaps.

At that time, the left roll portion 123 moves downward and is sandwiched between the left roll portion 125 and the left roll portion 125 so as to be in contact with one side WH. Further, the right roll portion 153 moves downward and is sandwiched between the right roll portion 153 and the right roller portion 155 so as to be in contact with one side WH.

At that time, by rotating the clamp portion 320 backward as described above (not shown), the space between the claw portion 310 and the clamp portion 320 is opened, and the charging clamps 300 and 300 are the charging clamps 300 and 300. Release the cloth W held in. In this state, the cloth spreading device 100 starts moving in the rear r direction by the front-back direction moving portion 510 (see FIG. 12).

After that, the left roll portion 123 and the left roller portion 125 sandwiched so as to be in contact with one side WH rotate together, so that the left expansion portion 120 moves to the left L. Further, the right expanding portion 150 moves in the right direction R by rotating both the right roll portion 153 and the right roller portion 155 sandwiched so as to be in contact with one side WH.

In this state, when the left expanding portion 120 moves in the left direction L in the front view and at the same time the right expanding portion 150 moves in the right direction R in the front view, the left sensor portion 27 arranged below the left mounting portion 22 moves. The left corner WL of the cloth W is detected. Specifically, the light beam emitted from the left sensor unit 27 is applied to the cloth W, and the cloth W is detected while the light ray is reflected, so that the left corner portion WL of the cloth W is not yet detected. However, when the left expansion portion 120 moves further, when the cloth W passes through the region of the light beam emitted from the left sensor unit 27, the light ray emitted from the left sensor unit 27 is scattered without being reflected. The presence of the left corner WL is detected (see FIG. 13).

A slight time lag occurs between the position of the light beam emitted from the left sensor unit 27 and the position of the left fixed chuck 130. At this time, the left first member 131 of the left fixed chuck 130 moves downward to the left of the cloth W. The corner portion WL is sandwiched and fixed by the left second member 132. In this state, the right sensor portion 57 arranged below the right mounting portion 52 has not yet detected the right corner portion WR of the cloth W.

The left expansion portion 120 moves to the left L by the expansion drive unit 70 while the left corner portion WL of the cloth W is sandwiched and fixed by the left first member 131 and the left second member 132 in the left fixing chuck 130. While the right expansion unit 150 is moved in the right direction R by the expansion drive unit 70, the right sensor unit 57 arranged below the right mounting unit 52 detects the right corner portion WR of the cloth W. Specifically, the light beam emitted from the right sensor unit 57 is applied to the cloth W, and the cloth W is detected while the light ray is reflected. Therefore, the right corner WR of the cloth W is not detected yet. However, when the right expansion portion 50 moves further, when the cloth W passes through the region of the light ray emitted from the right sensor unit 57, the light ray emitted from the right sensor unit 57 is scattered without being reflected, so that the right corner The presence of the part WR is detected.

There is a slight time lag between the position of the light beam emitted from the right sensor unit 57 and the position of the right fixed chuck 160. At this time, the right first member 161 of the right fixed chuck 160 moves downward, and the right corner of the cloth W. The portion WR is sandwiched and fixed by the right second member 162.

At this time, the expansion drive unit 70 moves the left expansion unit 120 to the left direction L, while the right expansion unit 150 moves to the right direction R, and both of these movements are symmetrical. When the left corner portion WL of the cloth W is sandwiched and fixed by the left fixed chuck 130 and the right corner portion WR of the cloth W is sandwiched and fixed by the right fixed chuck 160, the center portion WC of the cloth W and the center of the loading device 600 are fixed. The cloth W is expanded while matching with the part 601.

The expanded cloth W is further moved in the rear r direction by the front-rear direction moving portion 510, and is placed on the conveyor 560. After that, it is the same as the first embodiment. Therefore, when the expanded cloth W is tilted, it is corrected by the above-mentioned correction device 580 and conveyed to the next step by the transfer conveyor 560.

10 Cloth spreading device 20 of the first embodiment Left spreading part 21 Left bracket part 22 Left mounting part 23 Left soft roll part 25 Left free roller part 26 Left cloth detection sensor 27 Left sensor part 50 Right spreading part 51 Right bracket part 52 Right mounting part 53 Right soft roll part 55 Right free roller part 56 Right cloth detection sensor 57 Right sensor part 100 Cloth spreading device 120 of the second embodiment Left spreading part 121 Left bracket part 122 Left mounting part 123 Left roll part 125 Left roller part 130 Left fixed chuck 131 Left first member 132 Left second member 150 Right expansion part 151 Right bracket part 152 Right mounting part 153 Right roll part 155 Right roller part 160 Right fixed chuck 161 Right first member 162 Right first 2 member 300 Loading clamp 310 Claw part 320

Clamp part

500, 600 Loading device

Claims

To spread the cloth that has the right corner and the left corner and one side between them
The left sensor part that detects the left corner part and the left sensor part
The right sensor part that detects the right corner part and the right sensor part
A left expansion part that holds the one side and moves to the left,
A right expansion part that holds the one side and moves to the right,
The left expansion portion moves to the left while holding the one side, and when the left sensor portion detects the left corner portion of the cloth, the left expansion portion is the left corner portion of the cloth. The right expansion portion moves to the right while holding the one side, and when the right sensor portion detects the right corner portion of the cloth, the right expansion portion is the cloth. A cloth spreading device that holds the right corner of the class.
It has an expansion drive unit that drives the left expansion unit to the left and also drives the right expansion unit to the right direction.
The cloth spreading device according to claim 1, wherein the left expanding portion is moved to the left and the right expanding portion is moved to the right by driving the expanding driving unit.
The left expansion portion is moved to the left by the expansion drive unit while holding the one side, and the left soft roll portion moves downward, and the left soft roll portion moves downward when the left soft roll portion moves downward. The left free roller part that sandwiches the left corner part, and the left free roller part
The right expansion portion is moved to the right by the expansion drive unit while holding the one side, and the right soft roll portion moves downward, and the right soft roll portion moves downward when the right soft roll portion moves downward. Has a right free roller part that sandwiches the right corner part,
The left sensor unit detects the left corner portion, and the left soft roll portion and the left free roller portion fix the left corner portion and at the same time.
The cloth spreading device according to claim 2, wherein when the right sensor unit detects the right corner portion, the right soft roll portion and the right free roller portion fix the right corner portion.
The left expansion portion includes a left roll portion that moves to the left by the expansion drive portion while holding the one side, a left roller portion, and a left fixed chuck that sandwiches the detected left corner portion by the left sensor portion. ,
The right expansion portion includes a right roll portion that is moved to the right by the expansion drive portion while holding the one side, a right roller portion, and a right fixed chuck that sandwiches the detected right corner portion by the right sensor portion. Have,
The left roll portion and the left roller portion move to the left while sandwiching the one side, and the left fixed chuck holds the left corner portion detected by the left sensor portion and sandwiches the left corner portion.
The cloth spreading according to claim 2, wherein the right roll portion and the right roller portion move to the right while sandwiching the one side, and the right fixed chuck sandwiches the right corner portion detected by the right sensor portion. Device.
A cloth loading device having the cloth spreading device according to any one of claims 1 to 4.