JP2019154462A - Clothing spreading apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cloth unfolding device capable of stretching one side of a cloth without slack. SOLUTION: In a cloth unfolding device 1, a pair of extension chucks 41 and 41 for gripping both end corners of one side of the cloth C and a cloth C suspended from the pair of extension chucks 41 and 41 are inserted. It is provided with a shaping duct 51. The extension chucks 41 and 41 perform a primary tension operation in which the intervals thereof are widened and one side of the cloth C is extended. After that, the shaping duct 51 performs a wrinkle removing operation of sucking the cloth C downward. After that, the extension chucks 41 and 41 perform a secondary tension operation in which the intervals thereof are widened and one side of the cloth C is extended. Even if one side of the cloth C is slackened in a U shape due to the wrinkle removing operation, the slack can be eliminated. [Selection diagram] Fig. 3

Description

  The present invention relates to a cloth deployment device. More specifically, the present invention is a cloth for developing cloths such as washed sheets, wrapping cloth (duvet cover of two fabrics), pillow covers, towels, table cloths, etc., and putting them into the processing apparatus of the next process. The present invention relates to a similar deployment device.

  Large quantities of sheets are used in hotels and hospitals. Used sheets are washed and ironed in a laundry factory and used again in hotels and hospitals. In a laundry factory, cloths such as sheets are washed and then ironed with a roll ironer or folded with a cloth folding device. In order to supply cloth to these processing apparatuses, it is necessary to unfold the cloth in advance. When an operator performs the work of deploying the cloth, a great amount of time and labor are required for the work. Therefore, in recent years, this work is performed using a cloth deployment device.

The cloth deployment device disclosed in Patent Literature 1 is generally configured as follows.
When the cloth is attached to the clamp of the charging unit, the clamp is raised. The cloth is transferred from the clamp to a pair of left and right carriages. At this time, both corners of one side of the cloth are gripped by the carriage. The pair of carriages traverse so as to open to the left and right with the cloths suspended. Thereby, cloth is developed in the state where one side was extended horizontally. The lower part of the cloth after unfolding is inserted into the airflow forming part. The fabric wrinkles are removed by the air flow in the air flow forming section. Thereafter, the fabric is discharged toward a subsequent processing apparatus.

JP 2013-215361 A

  The fabrics are pulled downward by the air flow in the air flow forming portion. One side of the cloth stretched horizontally by this force is loosened in a U-shape. In particular, slack is likely to occur in the case of heavy fabrics, fabrics having a wide width, and fabrics made of a fabric with little friction. If the fabric is transported while slack, wrinkles may remain on the fabric. If the slack is large, the delivery to the subsequent conveyor may fail and the cloth may fall.

  In view of the above circumstances, an object of the present invention is to provide a cloth unfolding apparatus that can stretch one side of a cloth without slack.

In the cloth unfolding device according to the first aspect of the present invention, a pair of stretch chucks that hold both corners of one side of the cloth and suspend the cloth, and the cloth that is suspended by the pair of stretch chucks are inserted. The pair of extension chucks perform a primary tensioning operation to extend the one side of the cloth by widening the interval between the pair of extension chucks, and the shaping duct is configured after the primary tensioning operation. And a pair of stretch chucks that stretch the one side of the cloth by widening the distance between the pair of stretch chucks after the wrinkle removal operation. The operation is performed.
According to a second aspect of the present invention, there is provided the cloth unfolding device according to the first aspect, wherein the pair of stretching chucks are expanded after the interval between the pair of stretching chucks is narrowed in the secondary stretching operation.
According to a third aspect of the present invention, there is provided the cloth unfolding device according to the second aspect of the present invention, further comprising a unfolding detection sensor that detects an upper edge portion of the cloth in the unfolded state, and the pair of unfolding chucks in the unfolding operation. The interval between the pair of spreading chucks is narrowed until the detection sensor is in a non-detection state, and then an expansion operation is started to widen the interval, and the expansion operation is performed after a predetermined time has elapsed since the expansion detection sensor has entered the detection state. It is characterized by stopping.
According to a fourth aspect of the present invention, there is provided the cloth unfolding device according to the first aspect, wherein the pair of stretch chucks expands the pair of stretch chucks without narrowing in the secondary tension operation.
According to a fifth aspect of the present invention, there is provided the cloth unfolding device according to the fourth aspect of the present invention, further comprising a slack amount measuring device that measures a slack amount of the one side of the cloth suspended from the pair of stretch chucks, and the pair of stretch chucks includes: In the secondary tensioning operation, the distance between the pair of stretching chucks is widened by an undeveloped amount obtained from the slack amount measured by the slack amount measuring device.
According to a sixth aspect of the present invention, there is provided the cloth unfolding device according to the first, second, third, fourth, or fifth aspect, wherein the pair of stretch chucks is configured so that slack remains on the one side during the primary stretch operation. It is characterized by expanding the kind.
A cloth unfolding device according to a seventh aspect of the present invention is the cloth unfolding apparatus according to the first, second, third, fourth, fifth or sixth aspect, wherein the cloth suspended from the pair of stretch chucks is sandwiched from the front and back. A holding device is provided, and the holding device holds the cloth during the wrinkle removal operation.
According to an eighth aspect of the present invention, in the first, second, third, fourth, fifth, or sixth aspect, the cloth unfolding device holds the cloth suspended from the pair of stretch chucks from the front and back sides. A holding device is provided, and the holding device holds the cloth while delivering the cloth to a post-processing machine after the secondary tensioning operation.

  According to the present invention, after the wrinkle removal operation of the shaping duct, the spreading chuck performs a secondary tension operation to extend one side of the cloth, so even if one side of the cloth is slacked in a U shape by the wrinkle removal operation, The slack can be eliminated.

It is a front view of the cloth deployment device concerning a 1st embodiment of the present invention. It is a side view of the cloth deployment apparatus of FIG. It is a front view of the cloth deployment apparatus of FIG. However, the input part and the relay part are omitted. It is explanatory drawing of process (1), (2) of expansion | deployment operation | movement. It is explanatory drawing of process (3), (4) of expansion | deployment operation | movement. It is explanatory drawing of process (5), (6) of expansion | deployment operation | movement. It is a side view of the cloth deployment device concerning a 2nd embodiment of the present invention.

Next, an embodiment of the present invention will be described with reference to the drawings.
[First Embodiment]
The cloth unfolding device 1 according to the first embodiment of the present invention unfolds a rectangular cloth C such as a washed sheet, a wrapping cloth (duvet cover made of two pieces of fabric), a pillow cover, a towel, a table cloth, etc. It is an apparatus for supplying to the next process apparatus such as a roll ironer. In this specification, the front / rear, left / right, and up / down directions of the cloth spreading device 1 are defined as shown in FIGS. 1 and 2.

(Basic configuration)
Next, the basic configuration of the cloth deployment device 1 will be described together with the operation.
As shown in FIGS. 1 and 2, the cloth deployment device 1 includes a machine frame 10. Moreover, the cloth deployment apparatus 1 is provided with the control part 11 which controls operation | movement of the various apparatuses demonstrated below. The control unit 11 is a computer configured with a CPU, a memory, and the like.

  The machine casing 10 is provided with an input unit 12. The input unit 12 includes various switches and a touch panel. The operator can input the type, for example, the size of the cloth C to be processed by the cloth unfolding apparatus 1 by operating the input unit 12. Information for specifying the type of the fabric C is input from the input unit 12 to the control unit 11. The control unit 11 changes the operation and parameters of various devices according to the type of the cloth C.

  On the front surface of the machine frame 10, a loading unit 20 for a worker to load the cloth C is provided. The input unit 20 includes an input chuck 21 that grips the cloth C and an elevator 22 that moves the input chuck 21 up and down. The elevator 22 includes a main body part 22a and an elevator part 22b. The elevating part 22b can be moved up and down along the main body part 22a. A chuck base 23 that supports the input chuck 21 is fixed to the elevating part 22b.

  The chuck base 23 has a width about the width of a person's shoulder. A pair of input chucks 21 and 21 are provided at both left and right ends of the chuck base 23, respectively. The corners on one side of the cloth C are gripped by the pair of input chucks 21 and 21, respectively.

  By driving the elevator 22, the closing chuck 21 has a closing position (solid line in FIG. 2) where the worker attaches the cloth C to the closing chuck 21 and a rising position (two-dot chain line in FIG. 2) that is raised to the uppermost end. Go up and down between. When the worker manually attaches the cloth C to the closing chuck 21, the elevator 22 raises the cloth C together with the closing chuck 21.

  The number of the input parts 20 with which the cloth deployment apparatus 1 is equipped is not specifically limited, One may be sufficient and plural may be sufficient. In the present embodiment, four input units 20 are provided, and the cloth C can be input from any of the input units 20.

  The cloth deployment device 1 includes a relay chuck 30. The number of relay chucks 30 is the same as the number of input parts 20. One relay chuck 30 is provided for one input unit 20. The relay chuck 30 is disposed behind the input chuck 21 that has been raised to the raised position. The relay chuck 30 receives the fabric C from the input unit 20 corresponding to the relay chuck 30, and delivers the fabric C to the extending unit 40. In addition, it is good also as a structure by which the cloth C is delivered directly from the input chuck 21 to the extending part 40. That is, the relay chuck 30 may not be provided.

  On the back side of the relay chuck 30, there is provided a stretch portion 40 that unfolds the cloth C. As shown in FIG. 3, the stretch section 40 includes a pair of stretch chucks 41 and 41 that grip both corners of one side Cs of the cloth C, and a traversing machine 42 that individually traverses the pair of stretch chucks 41 and 41. Consists of. Hereinafter, one side Cs between both corners held by the pair of spreading chucks 41 and 41 is referred to as “upper side”.

  The traversing machine 42 includes, for example, a rail that guides each spreading chuck 41, an endless chain connected to the spreading chuck 41, and a servo motor that drives the endless chain. Each spreading chuck 41 traverses in the horizontal direction (left-right direction) at a predetermined height from the floor surface on which the cloth developing device 1 is installed.

  The cloth C is suspended in the unfolded state as the pair of spreading chucks 41 and 41 that have received the cloth C traverse so as to open left and right. The cloth deployment device 1 is provided with a deployment detection sensor 43. The unfolding detection sensor 43 detects the upper edge of the cloth C in the unfolded state (near the upper side Cs). The deployment detection sensor 43 is a sensor that detects the presence or absence of the cloth C at the detection position. As the deployment detection sensor 43, a non-contact sensor such as a photoelectric sensor or an ultrasonic sensor is preferably used. The detection position of the unfolding detection sensor 43 is set at a position approximately at the center of the left and right of the cloth unfolding device 1 and a predetermined distance below the spreading chuck 41. Whether or not the fabric C is in the deployed state can be determined based on whether or not the deployment detection sensor 43 detects the fabric C.

  As shown in FIG. 2, a shaping duct 51 and a blower 52 connected to the shaping duct 51 are provided in the lower part of the machine casing 10. The lower part of the cloth C suspended from the spreading chucks 41, 41 is inserted into the shaping duct 51. The shaping duct 51 sucks the cloth C downward. The wrinkles of the cloth C are removed by the airflow in the shaping duct 51.

  A vacuum box 61 is disposed below the extending portion 40. The vacuum box 61 can move back and forth in a region behind the spreading chuck 41. A pressing device 62 is disposed in front of the vacuum box 61. The pressing device 62 is disposed in a region in front of the spreading chuck 41. The pressing device 62 includes a plate-shaped pressing member 62a that is long in the left-right direction and a cylinder 62b that moves the pressing member 62a back and forth.

  When the cloth C is suspended by the spreading chucks 41, 41, when the vacuum box 61 is moved forward and the pressing member 62a is moved backward, the cloth C is sandwiched from the front and back by the tip of the vacuum box 61 and the pressing member 62a. Can be retained. Thus, the vacuum box 61 and the pressing device 62 constitute a holding device 60 that holds the cloth C. The cloth C is held by the holding device 60 during the wrinkle removing operation of the shaping duct 51.

  The number of pressing devices 62 provided in the cloth deployment device 1 is not particularly limited, and may be one or more. In the present embodiment, three pressing devices 62 are respectively disposed between the input portions 20 (see FIG. 3).

  Further, the pressing member 62a may be fixed to the machine casing 10. In this case, it is not necessary to provide the cylinder 62b. Only the vacuum box 61 may be moved forward, and the cloth C may be held between the tip of the vacuum box 61 and the pressing member 62a. Furthermore, it is good also as a structure which does not have the pressing device 62. FIG.

  When the spreading chucks 41, 41 are opened after the wrinkle removal operation of the shaping duct 51, the upper edge of the fabric C is adsorbed to the vacuum box 61. A primary conveyor 71 is disposed below the vacuum box 61. A vacuum box 72 is disposed below the conveying surface of the primary conveyor 71. A secondary conveyor 73 is connected to the rear of the primary conveyor 71.

  When the vacuum box 61 adsorbing the cloth C is moved backward, the upper edge of the cloth C is transferred from the vacuum box 61 to the primary conveyor 71. At this time, the vacuum box 72 is in an activated state, and the cloth C is adsorbed to the primary conveyor 71. By driving the primary conveyor 71 and the secondary conveyor 73, the cloth C is sent backward. Thereby, the developed cloth C is supplied to the next process apparatus.

(Deployment operation)
Next, an unfolding operation for unfolding the cloth C will be described with reference to FIGS. In addition, (1)-(6) in FIGS. 4-6 respond | corresponds to (1)-(6) of the following description, respectively.

(1) Receiving Cloth First, the spreading chucks 41 and 41 receive the cloth C from the previous process machine. In the present embodiment, the pre-process machine is a relay chuck 30. When the spreading chucks 41 and 41 are configured to receive the cloth C directly from the loading unit 20, the pre-process machine is the loading unit 20.

  The pair of spreading chucks 41 and 41 grips both corners of the upper side Cs of the cloth C. That is, one of the spreading chucks 41 grips one corner of the upper side Cs. The other spreading chuck 41 grips the other corner of the upper side Cs. The cloth C is suspended by the spreading chucks 41 and 41.

  The stretch chucks 41, 41 have their intermediate positions (hereinafter referred to as “chuck intermediate positions”) left and right of the cloth developing device 1 while their intervals (hereinafter referred to as “chuck intervals”) are narrowed. Ramp until it reaches the approximate center.

(2) Primary tensioning operation Next, the spreading chucks 41 and 41 traverse so as to open left and right. That is, the spreading chucks 41 and 41 spread the cloth C with the chuck interval widened. Thereby, the cloth C is suspended in the unfolded state. Hereinafter, this operation of the spreading chucks 41 and 41 is referred to as “primary tensioning operation”.

  Here, if the chuck | zipper space | interval of the spreading chucks 41 and 41 spreads from a narrow state, the center part of the upper side Cs which slackened with it will raise. When the cloth C is unfolded to some extent, the unfolding detection sensor 43 detects the cloth C. After a predetermined time (hereinafter referred to as “excess time”) has elapsed since the deployment detection sensor 43 has detected the cloth C (hereinafter referred to as “detected state”), the expansion chucks 41, 41. Stops the spreading operation. Thereby, the upper side Cs of the cloth C is stretched horizontally without slack.

  Note that the excess time is set in advance so that the upper side Cs is extended without slack. The optimum value of the excess time depends on the size of the cloth C, mainly the length of the upper side Cs. The control unit 11 operates the spreading chucks 41 and 41 in an optimum excess time according to the type of the cloth C input from the input unit 12.

(3) Wrinkle removal operation After the primary stretching operation of the spreading chucks 41, 41, the lower part of the cloth C is inserted into the shaping duct 51. The shaping duct 51 sucks the cloth C downward. The wrinkles of the cloth C are removed by the airflow in the shaping duct 51. Hereinafter, this operation of the shaping duct 51 is referred to as “wrinkle removal operation”.

  The cloth C may be held by the holding device 60 during the wrinkle removing operation of the shaping duct 51. In this case, after the primary tensioning operation and before the wrinkle removal operation, the vacuum box 61 is moved forward, the pressing member 62a is moved backward, and the cloth C is held between the front and back sides. Further, after the wrinkle removal operation, the vacuum box 61 is moved backward and the pressing member 62a is moved forward to release the cloth C from being held.

  The cloth C is pulled downward by the airflow in the shaping duct 51. The upper side Cs of the cloth C stretched horizontally by this force may be loosened in a U shape. Therefore, after the wrinkle removing operation, the spreading chucks 41 and 41 perform a “secondary stretching operation” in which the chuck interval is widened and the upper side Cs of the cloth C is stretched.

(4) Secondary tensioning operation (narrowing)
In the secondary tensioning operation, the spreading chucks 41 and 41 first reduce the chuck interval. If the chuck | zipper space | interval of the expansion chucks 41 and 41 becomes narrow, the slack of upper side Cs will become large and a center part will descend | fall. The spread chucks 41 and 41 reduce the chuck interval until the spread detection sensor 43 is in a state where the cloth C is not detected (hereinafter referred to as “non-detection state”).

(5) Secondary tension movement (expansion)
Thereafter, the spreading chucks 41 and 41 start an operation of widening the chuck interval. As the spreading chucks 41 and 41 are spread, the center portion of the upper side Cs that has been loosened rises. When the cloth C is unfolded to some extent, the unfolding detection sensor 43 detects the cloth C. After a predetermined excess time has elapsed since the deployment detection sensor 43 is in the detection state, the spreading operation of the spreading chucks 41 and 41 is stopped. Thereby, the upper side Cs of the cloth C is stretched horizontally without slack.

  As described above, the cloth unfolding apparatus 1 of the present embodiment performs the secondary tensioning operation in which the spreading chucks 41 and 41 extend the upper side Cs of the cloth C after the wrinkle removing operation of the shaping duct 51. Even if the upper side Cs of the cloth C is slacked in a U shape by the wrinkle removal operation, the slack can be eliminated. Therefore, the upper side Cs of the cloth C can be extended without slack. In addition, since the cloth C, which has been almost completely developed up to the wrinkle removal operation, is re-developed by the secondary tensioning operation, the cloth C can be more evenly spread.

(6) Cloth delivery After the secondary tensioning operation, the spreading chucks 41 and 41 release the cloth C and deliver the cloth C to the post-process machine. Here, in the present embodiment, the post-process machine is a vacuum box 61. Thereafter, the fabric C is fed toward the next process apparatus by driving the primary conveyor 71 and the secondary conveyor 73.

  By the secondary tensioning operation of the stretching chucks 41, 41, the upper side Cs of the fabric C is stretched without slack. Therefore, it is possible to suppress wrinkles remaining on the cloth C. Moreover, it can reduce that the delivery to the post-process machine of the cloth C fails.

  Note that the cloth C may be held by the holding device 60 while the cloth C is delivered to the post-process machine. In this case, after the secondary tensioning operation, the vacuum box 61 is moved forward, the pressing member 62a is moved backward, and the cloth C is held between the front and back sides. Further, after the fabric C is transferred to the post-process machine, the vacuum box 61 is moved backward, and the holding member 62a is moved forward to release the holding of the fabric C.

[Second Embodiment]
Next, the cloth deployment device 2 according to the second embodiment of the present invention will be described.
As shown in FIG. 7, the cloth unfolding device 2 of the present embodiment includes a slack amount measuring device 44 in place of or in addition to the unfolding detection sensor 43 in the cloth unfolding device 1 of the first embodiment. It is. Since the rest of the configuration is the same as in the first embodiment, the same reference numerals are assigned to the same members, and descriptions thereof are omitted.

  The slack amount measuring device 44 is a measuring device that measures the slack amount of the upper side Cs of the cloth C suspended from the spreading chucks 41, 41. Here, as indicated by the symbol D in FIG. 5, the amount of slack is the height of the center when the upper side Cs of the fabric C is stretched without slack, and the height of the center of the current upper side Cs. It is a difference.

  As long as the slack amount measuring device 44 can measure the slack amount D, it can be used without any particular limitation. For example, a laser scanner or a camera may be used as the slack amount measuring device 44. The slack amount D can be obtained by measuring the shape of the cloth C with a laser scanner. The slack amount D can be obtained by analyzing the image of the cloth C taken by the camera. The slack amount measuring device 44 may be a non-contact type measuring device such as a laser scanner or a camera, or may be a contact type measuring device that measures the slack amount D by contacting the cloth C.

  The spreading chucks 41 and 41 of the present embodiment widen without narrowing the chuck interval in the secondary tensioning operation. That is, the spreading chucks 41 and 41 do not perform the operation shown in (4) of FIG. The expansion chucks 41 and 41 increase the chuck interval as it is after the wrinkle removal operation.

  At this time, the expansion chucks 41 and 41 widen the chuck interval by an undeveloped amount obtained from the slack amount D measured by the slack amount measuring device 44. Here, the “underdeveloped portion” is an increment of the chuck interval necessary for extending the slack of the upper side Cs. The length of the upper side Cs can be obtained from the slack amount D measured by the slack amount measuring device 44 and the current chuck interval. The difference between the length of the upper side Cs and the current chuck interval is the insufficient development. That is, the undeveloped portion can be obtained from the slack amount D and the chuck interval.

  In the secondary tensioning operation, the spreading chucks 41 and 41 do not perform an operation of narrowing the chuck interval, so that the processing time for the distribution class C can be shortened. Therefore, the number of pieces of cloth C that can be processed per unit time by the cloth developing device 2 can be increased.

[Third Embodiment]
In the primary tensioning operation, the spreading chucks 41 and 41 may unfold the cloth C intentionally so that slack remains on the upper side Cs. That is, the cloth C may be unfolded loosely in the primary tensioning operation.

  As described above, in the primary tensioning operation, the spreading operation of the spreading chucks 41 and 41 is stopped after a predetermined excess time has elapsed after the deployment detection sensor 43 enters the detection state. Here, if the excess time is set shorter than the time required to stretch the upper side Cs of the cloth C without slack, the cloth C is developed so that slack remains on the upper side Cs.

  The traversing speed of the spreading chucks 41 and 41 may be slowed while keeping the excess time constant. Also in this case, the cloth C is developed so that slack remains on the upper side Cs. The traversing speed of the spreading chucks 41 and 41 may be slowed down over the entire primary tensioning operation, or the traversing speed of the spreading chucks 41 and 41 may be slowed down only in the latter half of the entire primary tensioning motion. The traverse speed of the spreading chucks 41, 41 is increased in the first half of the primary tensioning operation and is decreased in the second half. If it does so, the processing time of the cloth C will not become long.

  In order to unfold the fabric C without slack, the fabric chuck C is strongly pulled by the spreading chucks 41 and 41, and the load on the fabric C is large. On the other hand, if the cloth C is unfolded loosely by the primary tensioning operation, the load on the cloth C can be reduced. Therefore, damage to the cloth C can be reduced.

DESCRIPTION OF SYMBOLS 1, 2, Cloth unfolding apparatus 40 Expanding part 41 Expanding chuck 42 Traversing machine 43 Unfolding detection sensor 44 Slack measuring instrument 51 Shaping duct 60 Holding device 61 Vacuum box 62 Holding device

Claims (8)

A pair of extension chucks that grips both corners of one side of the fabric and suspends the fabric;
A shaping duct into which the cloth suspended from the pair of spreading chucks is inserted,
The pair of stretch chucks performs a primary stretching operation to extend the one side of the cloth by increasing the distance between the pair of stretch chucks,
The shaping duct performs a wrinkle removing operation for sucking the cloth downward after the primary tensioning operation,
The pair of stretch chucks performs a secondary stretch operation of extending the one side of the fabric by widening an interval between the pair of stretch chucks after the wrinkle removing operation. 2. The cloth deployment device according to claim 1, wherein the pair of stretch chucks is expanded after the interval between the pair of stretch chucks is narrowed in the secondary stretching operation. 3. A deployment detection sensor for detecting the upper edge of the fabric in the deployed state;
In the secondary tensioning operation, the pair of stretching chucks narrows the distance between the pair of stretching chucks until the unfolding detection sensor is in a non-detection state, and then starts the unfolding operation to widen the spacing. The cloth spreading device according to claim 2, wherein the spreading operation is stopped after a predetermined time has elapsed since the sensor is in a detection state. The cloth deployment device according to claim 1, wherein the pair of stretch chucks expands the pair of stretch chucks without narrowing in the secondary tension operation. A slack amount measuring device for measuring a slack amount of the one side of the cloth suspended from the pair of spreading chucks;
5. The pair of extension chucks, in the secondary tensioning operation, widens the distance between the pair of extension chucks by a shortage of development obtained from the amount of looseness measured by the amount of looseness measuring device. The cloth deployment apparatus as described. 6. The cloth unfolding apparatus according to claim 1, wherein the pair of unfolding chucks unfolds the cloth so that slack remains on the one side in the primary stretching operation. A holding device that holds the cloth suspended from the front and back from the pair of spreading chucks;
The cloth spreading device according to claim 1, 2, 3, 4, 5 or 6, wherein the holding device holds the cloth during the wrinkle removing operation. A holding device that holds the cloth suspended from the front and back from the pair of spreading chucks;
The said holding | maintenance apparatus hold | maintains the said cloth while passing the said cloth to a post-process machine after the said secondary tension operation | movement, The 1, 2, 3, 4, 5 or 6 characterized by the above-mentioned. Cloth unfolding device.

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