JP2009045204A - Corner end providing device and corner end providing method for rectangular cloth piece - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make only one cloth piece corner end appear by a high probability when automatically spreading a rectangular cloth piece after being washed and dried in a laundry plant. <P>SOLUTION: The corner end providing device for the rectangular cloth piece used in a spreading apparatus for automatically spreading the rectangular cloth piece Y carried in a rounded state into a rectangular shape includes a pair of rollers 31 and 32 for clamping the vertical middle position of the rectangular cloth piece Y lifted by holding an optional part from the horizontal direction on both sides thereof, a motor 35 for rotating both rollers 31 and 32 to the cloth piece advance side, and a detector 37 for detecting that a lower end Yc of the cloth piece is positioned at the lower surface close position of the joint part of both rollers 31 and 32. By stopping the rotation of both rollers 31 and 32 when a cloth piece lower end detection signal is put out from the detector 37, one cloth piece corner end Yc is made to appear near the joint part of both rollers 31 and 32 at a high probability. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rectangular cloth piece cornering device and a corner edge sticking method when a rounded rectangular cloth piece after washing and drying is neatly developed in a laundry factory or the like, particularly a face towel, a bath towel, etc. The present invention relates to a corner edge sticking device and a corner edge sticking method for a rectangular cloth piece having a relatively small area.

  In the laundry factory, face towels and bath towels (hereinafter referred to as rectangular cloth pieces) that are received are folded and shipped cleanly after washing and drying, but the rectangular cloth pieces after washing and drying are in a curled state in the dryer. Taken from.

  Conventionally, in general, the rectangular cloth pieces in a state of being rounded are separated one by one from the group of stacked rectangular cloth pieces, and an operator manually searches for and extends one short side edge from the rectangular cloth pieces. Then, after the extended short side edge is placed on the input conveyor of the folding device, the trailing side of the rectangular cloth piece is widened in the short side direction and sent to the folding device while shaping.

  By the way, in a laundry factory, a large amount of rectangular cloth pieces must be unfolded per day. However, in the manual unfolding method as described above, the unfolding work of the rectangular cloth pieces is troublesome and the amount per sheet is large. The processing time was long and the work efficiency was bad.

  In order to improve such a problem of the rectangular cloth piece unfolding method by manual work, a rectangular cloth piece unfolding apparatus disclosed in Japanese Patent Application Laid-Open No. 2002-113300 has been proposed by an affiliated company of the present applicant. As shown in FIG. 22, the known rectangular cloth piece unfolding apparatus sequentially supplies the cloth pieces that have been washed and dried by the supply conveyor 201 to a predetermined position in a rolled state and supplies the cloth to the predetermined position. The piece is lifted to a predetermined height by the lifting device 202, the lifted cloth piece is received and temporarily held by the temporary holding device 203, and the cloth piece is held by holding any part of the cloth piece suspended by the temporary holding device 203. Is dragged in the horizontal direction on the base plate 243 so that the corner end of the cloth piece, which is the end of the cloth piece, is exposed (processed by the corner edge extracting device 204 in FIGS. 23 to 25 described later), and the corner edge is removed. The apparatus 205 holds the vicinity of the corner end of the cloth piece that has appeared on the base plate 243 and supports the cloth piece hanging down, and the cloth piece that is supported by the corner cutting apparatus 205 is supported horizontally by the horizontal pulling apparatus 206. Lay down in the direction and lie down near the corner edge on the long side of the cloth. The two positions that are separated from each other by an appropriate distance are held at the same height by the two-position holding device 207, and the cloth piece held by the two-position holding apparatus 207 is placed on the edging conveyor 208 and placed on one of the long sides of the cloth pieces. The side edge is made to appear, and the cloth piece is placed on the roller 209 while being dragged on the roller 209 while holding the two positions of the long side of the cloth piece that is edged on the edge conveyor 208 by the placing device 210. The cloth device placed on the roller 209 by the suspending device 211 is held at two short side edges, and the cloth piece is suspended in the unfolded state, and is unfolded by the suspending device 211. The cloth piece in the state can be transferred onto the transport conveyor 214 by the advance / retreat apparatus 212. Details of the rectangular cloth piece unfolding device shown in FIG. 22 are described in JP-A-2002-113300.

  By the way, in the cloth piece unfolding process by the rectangular cloth piece unfolding apparatus of FIG. 22, it is essential to clearly reveal one corner end of the rectangular cloth piece. This is performed by the corner edge extracting device 204 shown enlarged in FIG.

  23 to 25, the corner edge sticking device 204 includes a chuck 241 that receives the cloth piece Y (FIG. 23) suspended and held by the chuck 231 of the temporary holding device 203, and advancing and retreating the chuck 241 back and forth. A device (cylinder) 242, a base plate 243 that receives the cloth piece Y, detectors (photoelectric tubes) 244 and 244 that detect the end (corner end Yc) of the cloth piece Y dragged on the base plate 243, and a base plate 243 A presser plate 248 that presses the vicinity of the end (corner end Yc) of the cloth piece Y upward, a cylinder 249 that moves the presser plate 248 up and down, a pair of upper and lower sandwiching rollers 245 and 246, and an upper roller 245 as a lower roller 246 And a cylinder 247 that opens and closes. Between the rear end edge of the base plate 243 and the lower roller (fixed position roller) 246, there is a space for the chuck 251 of the corner cutting device 205 shown in FIG.

  And this corner | angular_edge extraction apparatus 204 operate | moves as follows. First, as shown in FIG. 23, when the chuck 231 of the temporary holding device 203 is operated to the retracted position in the cloth holding state, the cylinder 242 extends and the chuck 241 moves forward, and the chuck 241 moves the chuck of the temporary holding device. The arbitrary position of the cloth piece Y suspended from 231 is held, and then the cylinder 242 is contracted and the chuck 241 moves backward while holding the cloth piece Y. At that time, the cloth piece Y is dragged on the base plate 243, and the upper roller 245 is closed (reference numeral 245 'in FIG. 24) when the chuck 241 passes rearwardly between the sandwiching portions of the upper and lower sandwiching rollers 245 and 246. The chuck 241 is opened, the upper and lower rollers 245 and 246 rotate in the cloth feeding direction, and the end of the cloth Y that is dragged on the base plate 243 (becomes the corner end Yc) is detected by the detectors 244 and 244. Then, the rotation of both rollers 245 and 246 stops, the cylinder 249 extends, and the presser plate 248 presses the vicinity of the cloth piece end Yc on the base plate 243 (the state indicated by reference numeral 248 'in FIG. 24), and then As shown in FIG. 25, the upper roller 245 moves up to the original open position. In the state of FIG. 25, the vicinity of the end of the cloth piece Y lies between the presser plate 248 (and the rear edge of the base plate 243) and the lower roller 246.

  Thereafter, the vicinity of the corner of the cloth piece that appears on the base plate 243 is held by the chuck 251 of the corner trimming device 205 (reference numeral 251 ′ in FIG. 25), and the cylinder 249 is reduced and the presser plate 248 is moved upward. The cylinder 252 of the corner trimming device 205 is contracted to support the cloth piece Y in a state where the vicinity of the cloth piece corner end Yc is held by the chuck 251. Thereafter, the cloth piece Y is sequentially passed through the above-described steps. The sheet is conveyed to the next process side (folding process side) by the conveyor 214 in a state of being expanded in a square shape.

JP 2002-113300 A

  Incidentally, in the known rectangular cloth piece unfolding device shown in FIGS. 22 to 25, as shown in FIG. 23, the cloth piece Y in which the chuck 241 of the corner edge take-out device 204 is suspended (the suspended cloth piece Y is also not suitable). When the cloth piece Y is held by the chuck 241 and the cloth piece Y is dragged on the base plate 243 (FIG. 24), In many cases, a plurality (for example, two) of cloth piece corner ends are located in the vicinity of the cloth piece end Yc. Then, as shown in FIG. 24, when the cloth end Yc is detected by the detector 244 on the base plate 243, the upper and lower rolls 245, 246 are stopped, and then the presser plate 248 is moved downward (reference numeral 248). ′) The presser plate 248 ′ presses the vicinity of the cloth piece end Yc. If there are a plurality of cloth piece corner ends near the cloth piece end Yc, the presser plate 248 ′ presses the plurality of cloth piece corner ends Yc. As shown in FIG. 25, when gripping the vicinity of the cloth end Yc with the chuck 251 'of the corner trimming device 205, a plurality of cloth edge corners may be gripped simultaneously with the chuck 251'.

  If the chuck 251 ′ grips a plurality of corners of the cloth piece at the same time, the cloth piece cannot be properly aligned in the subsequent process (the long edge edging process of the cloth piece), and the work of unfolding the cloth piece fails. There was a problem to do.

  In this way, in the rectangular cloth piece unfolding apparatus that automatically unfolds the rectangular cloth piece into a square shape from the rolled state, only one corner end Yc of the cloth piece Y is displayed in the series of cloth piece unfolding steps. The processing to be performed is important, and in order to minimize the failure of expansion, how to display only one corner end is a big issue.

  Accordingly, the present invention is a rectangular cloth piece unfolding device that can automatically unfold a rectangular cloth piece in a rounded state into a rectangular shape, so that only one corner end of the rectangular cloth piece can appear with high probability. An object of the present invention is to provide a corner edge sticking device and a corner edge sticking method for a rectangular cloth piece.

  The present invention has the following configuration as means for solving the above problems.

[Invention of Claim 1 of the Present Application]
The invention of claim 1 of the present application is directed to a rectangular cloth piece cornering device used in a developing device that automatically unfolds a rectangular cloth piece conveyed in a rolled state into a square shape.

  In addition, as a rectangular cloth piece unfolding apparatus, for example, there is one disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 2002-113300, but in order to automatically unfold a rectangular cloth piece from a rounded state into a square shape, it is as follows. Done.

  First, hold an arbitrary part of the rectangular cloth conveyed in a rolled state and lift it to a predetermined height, and use one side of the cloth piece as a clue to the lower end (which becomes one corner end) of the lifted cloth piece. The side edge of the short side or the long side is exposed, the side edge of the one side is dragged, and the rectangular cloth piece is automatically developed into a square shape through a predetermined process thereafter.

  And the corner edge taking-out apparatus of this invention is for making one corner edge of a rectangular cloth piece appear in a series of unfolding processes.

  According to the first aspect of the present invention, there is provided a corner edge sticking device comprising: a pair of rollers for sandwiching a rectangular cloth piece suspended at an arbitrary position from the horizontal direction on both sides thereof; A motor that rotates to the lifting side and a detector (photoelectric tube) that detects that the lower end of the cloth piece is positioned at a position closest to the lower surface side of the joint between both rollers, and a cloth lower end detection signal is generated from the detector. Sometimes, the rotation of both rollers is stopped, so that one corner of the cloth piece can appear in the vicinity of the joint portion between both rollers.

  In the present application, the joining portion of both rollers is the closest position of both rollers, and a slight gap is formed between both rollers in a state where a cloth piece is sandwiched between both rollers (both rollers are joined). However, in this case as well, the closest position becomes the junction referred to in the present application. Further, in the present application, the upper and lower intermediate positions of the lifted cloth pieces sandwiched between the pair of rollers do not mean the upper and lower center portions, and may be the appropriate intermediate height positions of the lifted cloth pieces.

  The pair of rollers may be configured such that one of the rollers can be displaced in the proximity and separation direction with respect to the other roller. In the state where the pair of rollers are joined, both rollers are joined linearly, and a wedge-shaped space is formed in the length direction of the roller on the upper surface side and the lower surface side of the joint portion. And the detector (photoelectric tube) for detecting the lower end of the cloth piece is installed so as to monitor the position closest to the joining portion in the space on the lower surface side of the joining portion of both rollers in the roller length direction.

  This detector detects (ON) the cloth piece when the cloth piece hangs down below the joint between the two rollers, but when the cloth piece hangs down and moves out of the detector monitoring position, The cloth piece is in the non-detection state (OFF), and the point when the cloth piece is in the non-detection state is in the cloth piece lower end detection state. The cloth lower end detection signal from the detector is transmitted to the controller, and the controller immediately stops the motors for rotating both rollers.

  By the way, in a laundry factory, rectangular cloth pieces (face towels and bath towels) are washed and dried in large quantities, but the rectangular cloth pieces after drying are still curled. Then, in order to develop each rectangular cloth piece using the rectangular cloth piece unfolding device, the rectangular cloth pieces that are curled up are sequentially supplied one by one to a predetermined position, and one rectangular cloth piece is supplied at the predetermined position. Hold any point and lift to a predetermined height. In this case, one corner end is often located at the lower end of the suspended fabric piece.

  Then, the corner edge taking-out device according to claim 1 of the present invention is configured such that the upper and lower intermediate positions of the suspended cloth pieces are sandwiched by a pair of rollers from both sides, and both rollers are rotated by the motor to the cloth piece raising side. The cloth hanging part that hangs downward from the roller joint is moved upward. While the cloth hanging part is being lifted, the cloth is detected by the detector, but when the lower end of the cloth hanging part reaches the position on the lower surface side of the joint between both rollers, the detector The non-detection state (cloth piece lower end detection state) is entered, and the motor is immediately stopped by the cloth piece lower end detection signal from the detector (the rotation of both rollers stops).

  In this state, the lower end of the cloth piece that has been hung down is in a position closest to the lower surface side of both roller joints. In many cases, however, only one corner of the cloth piece is sandwiched between the joints of both rollers. As a result, one corner edge of the cloth can be made to appear with high probability.

  In addition, as described above, one corner of the cloth piece sandwiched between the joint portions of both rollers is received by the chuck of the corner trimming device in the next step. The position near the corner end of the cloth piece is gripped from the closest position on the side (upper surface side) opposite to the side on which the corner end protrudes (lower surface side). Accordingly, in the case of the first aspect, for example, when the cloth piece that is being lifted by both rollers is held while being lifted from the upper side in a loose tension state, the position near the corner end of the cloth piece is set by the chuck from the upper surface side of the roller joint portion. I can hold it.

  In addition, after one corner of a piece of cloth is gripped by a chuck of a corner trimming device, the piece of cloth that has been cornered is successively developed into a square shape through subsequent steps.

  As described above, in the corner edge taking-out device according to the first aspect of the present invention, the suspended rectangular cloth piece is sandwiched between the pair of rollers, and the cloth piece hanging portion is lifted by the two rollers, and the cloth piece lower end (one corner end) ) Stops the rotation of both rollers when it reaches the position closest to the lower surface side of the joint between both rollers, so only one corner of the cloth piece appears with high probability at the joint between both rollers. Can be made.

  In addition, when a plurality of (for example, two) cloth piece corner ends are present at positions where they are almost overlapped at the same height at the lower end of the lifted cloth piece before being sandwiched by both rollers, Even if it is lifted up, it may be difficult to make only one cloth corner edge appear at the position closest to the lower surface side of both roller joints, but the height difference between the corner edges of multiple (two) cloth pieces is 4 to 5 cm. If it is approximately, only one corner of the cloth piece can be surely held between the joint portions of both rollers.

[Invention of claim 2 of the present application]
In the invention of claim 2 of the present application, the corner edge picking device of claim 1 is provided with a reversing device for reversing both rollers upside down. For example, a motor can be used for the reversing device.

  And in this corner | angular edge taking-out apparatus of this Claim 2, as explained in the said Claim 1, the cloth piece clamped by both rollers is pulled up, and one cloth piece corner | angular end is brought into the lower surface side nearest position of the junction part of both rollers. When the rollers are turned upside down by the reversing device with the holding part being lifted separated, the cloth piece is held in a state where one corner of the cloth piece is sandwiched between the joints of both rollers. Can hang down. In this case, the posture of the cloth piece can be maintained only by holding one cloth piece corner end at the joint between both rollers.

  Then, with the chuck of the corner trimming device that will be the next step, the upper edge of the cloth piece hanging from the position closest to the lower surface side of the joint of both rollers (near the corner of one cloth piece) is gripped. The chuck can be gripped with the piece hanging down.

[Invention of claim 3 of the present application]
The invention of claim 3 of the present application is directed to a method for cornering out a rectangular cloth piece when a rectangular cloth piece conveyed in a rolled state is developed into a square shape. This is performed using a dispensing device.

  Then, the corner end positioning method according to claim 3 holds the upper and lower intermediate positions of a rectangular cloth piece that is suspended while holding an arbitrary portion with a pair of rollers from both sides, and both the rollers are moved to the cloth piece raising side. When one corner end at the lower end of the cloth piece is lifted up to a position closest to the lower surface side of the joint part of both rollers, by stopping the rotation of both rollers, the cloth piece is put on the joint part of both rollers. It is characterized by making the corner edges appear.

  Also in the case of the corner end putting out method according to the third aspect, similarly to the explanation in the first aspect, in order to make one corner end of the cloth piece appear, the upper and lower middle positions of the suspended cloth piece are set to a pair. Since the cloth piece is lifted by the rollers and the cloth piece is lifted by both rollers, one corner end at the lower end of the cloth piece is lifted to a position closest to the lower surface side of the joint portion of both rollers. Only one piece corner end can be made to appear with probability.

  In the rectangular cloth piece cornering device of claim 1 and the rectangular cloth piece cornering method of claim 3 of the present application, a pair of rollers lifts up the cloth piece that is lifted by a pair of rollers to reveal one corner piece. Since the upper and lower intermediate positions are sandwiched and the lower end of the cloth piece (one corner of the cloth piece at the lowermost end) is lifted up to the position closest to the lower surface side of the joint part of both rollers, the joint part of both rollers is highly probable. Thus, only one corner end of the cloth piece can appear, and there is an effect that the probability that the unfolding operation of the rectangular cloth piece is normally performed in the subsequent process is increased (the number of sheets that fail to be unfolded is reduced).

  In addition, in the rectangular cloth piece cornering device according to claim 2 of the present application, as shown in the above-mentioned claim 1, after the one corner end at the lower end of the cloth piece is lifted to a position closest to the lower surface side of the joint portion of both rollers, By inverting both rollers upside down, the cloth piece can be hung down in a state where one cloth piece corner end is sandwiched between the joints of both rollers, in addition to the effect of claim 1 above, The gripping work for gripping the vicinity of the corner of the cloth piece can be easily performed with the chuck of the corner cutting device, which will be the next process (the position near the lower surface side of both roller joints of the hanging cloth piece is grasped. You can hold it).

  With reference to FIGS. 1-21, the corner | angular_edge extraction apparatus and corner | angular_edge extraction method of the rectangular cloth piece of an Example of this application are demonstrated. FIG. 1 shows an overall view of a rectangular cloth unfolding device that employs the corner edge sticking device of the present embodiment, and FIGS. 2 to 21 show individual device portions of the rectangular cloth unfolding device of FIG. Yes. In the following description, the front, rear, left, and right directions indicate the respective directions in the state of FIG.

The rectangular cloth piece unfolding device in FIG.
A supply conveyor 1 for supplying the rectangular cloth pieces Y after washing and drying to predetermined positions to be sequentially processed (FIG. 2);
A lifting device 2 that holds an arbitrary position of the cloth piece Y supplied to a predetermined position by the supply conveyor 1 and lifts it to a predetermined height (FIG. 2);
A corner edge sticking device 3 for exposing one cloth piece corner end Yc located at the lower end of the cloth piece Y lifted by the lifting device 2 (FIGS. 2 to 8);
A corner trimming device 4 for receiving the cloth corner corner Yc revealed by the corner trimming device 3 (FIG. 9);
A corner end suspension device 5 that receives and suspends the vicinity of the upper end of the cloth piece Y supported by the corner end device 4 in a hanging manner (FIGS. 10 to 13);
A short-side out device 6 that exposes the lower end side short side Ya of the cloth piece Y suspended by the corner end suspension device 5 (FIGS. 11 to 14);
A short chamfering device 8 for receiving the fabric short side Ya revealed by the short edge extracting device 6 (FIGS. 14 to 18);
A long-side take-out device 9 for receiving the cloth short side Ya held by the short chamfering device 8 and laterally drawing it to reveal the long side Yb of the cloth piece Y (FIGS. 18 to 19);
A placing device 10 that receives the cloth piece long side Yb revealed by the long-side take-out device 9 and places it on the belt of the posture correcting device 11 described later while being pulled horizontally (FIGS. 19 to 20);
A posture correcting device 11 for placing the cloth piece Y on the placing device 10 and adjusting the cloth piece Y to a normal posture (FIGS. 19 to 21);
A delivery device 12 (FIGS. 19 to 21) that transfers the unfolded cloth piece Y adjusted to a normal posture by the posture correction device 11 onto the carry-out conveyor 13;
And is configured. Each of these devices is installed in a frame (machine frame) (not shown).

  The supply conveyor 1 (FIGS. 1 and 2) is formed by winding two divided belts 1a and 1b divided in the width direction around two common shafts on the left and right sides with a small space 1c therebetween. It is designed to run from left to right. A detector (photoelectric tube) 19 is provided at a position near the end of the space 1c between the two divided belts. As shown in FIG. 2, the cloth piece Y placed on the starting end of the supply conveyor 1 is detected by the detector 19 near the end position (the position indicated by the chain line in FIG. 2). When transported, the motor 18 is stopped by the signal from the detector 19 (the supply conveyor 1 is stopped). Accordingly, each piece of cloth Y supplied onto the supply conveyor 1 is sequentially conveyed to a predetermined position (stop position) near the end of the supply conveyor 1 and waits there.

  The lifting device 2 (FIGS. 1 and 2) includes a chuck 21 that holds an arbitrary portion of the cloth piece Y and a lifting device (cylinder in this embodiment) 22 that lifts and lowers the chuck 21. Further, the lifting device 2 is driven by a left-right motion device comprising a motor 23 and a cable (timing belt) 24, and a position immediately above the cloth piece stopping position on the supply conveyor 1 and both rollers 31, 32 ( It is moved to the left and right between the position immediately above (described later) (position 2 ').

  The corner edge sticking device 3 (FIGS. 2 to 8) has a pair of rollers 31 and 32 that sandwich the cloth Y and move the cloth Y upward. The rollers 31 and 32 are juxtaposed in the left-right direction. Each of the rollers 31 and 32 is supported such that one roller 31 is supported at a position closer to the lower part of the reference side mounting base 33 and the other roller 32 is supported at a position closer to the lower part of the swinging side mounting base 34.

  The lower side of the swing side mounting base 34 (the support side of the roller 32) can be swung in the separation direction (state shown in FIG. 2) by the cylinder 38 with respect to the reference side mounting base 33. In a state where the side mounting base 34 swings in the separation direction, the roller 32 supported by the swinging side mounting base 34 is the roller 31 of the reference side mounting base 33 as indicated by reference numeral 32 'in FIGS. Are spaced apart from each other.

  Each of the rollers 31 and 32 is rotated by a power transmission mechanism 36 including a pulley, a belt, a gear, and the like by a motor 35 in a direction in which the cloth piece Y sandwiched between the two rollers is lifted upward (in the arrow direction in FIG. 6). .

  In a state where both rollers 31 and 32 are joined (FIGS. 5 to 7), a wedge-shaped space is formed above and below the joined portion. A detector (photoelectric tube) 37 that monitors the position closest to the lower surface side of the joint portion in the roller length direction is installed at the base side position of both rollers 31 and 32. The detector 37 detects whether or not the cloth piece Y is present at a position closest to the lower surface side of the joint portion between the rollers 31 and 32. The detector 37 is attached to the right outer surface of the reference side mounting base 33.

  As described above, when the detector 37 is installed so as to monitor the position closest to the lower surface side of the joint portion between the rollers 31, 32, it can be detected that the cloth piece lower end Yc is close to the both roller joint portion as will be described later. .

  The rollers 31 and 32 (and the mounting bases 33 and 34) can be reversed upside down by a reversing device 39 (using a motor in this embodiment). That is, the rollers 31 and 32 (and the mounting bases 33 and 34) can be arc-turned by a reversing device (motor) 39 within an angle range of 180 ° from the state shown by the solid line to the state shown by the chain line in FIG. It is like that. In addition, the reversal center of both rollers is located on the extended line of the junction part of both rollers.

  The corner edge extracting device 3 functions as follows. First, as shown in FIG. 2, before the lifting device 2 lifts the cloth piece Y and the lifting device 2 moves directly above the rollers 31 and 32 (position 2 '), one of the rollers 32 stands by at a position separated from the other roller 31 as indicated by reference numeral 32 '. The chuck 21 of the lifting device 2 grips and lifts an arbitrary portion of the rolled cloth piece Y on the supply conveyor 1. In this case, one corner of the cloth piece is positioned.

  When the lifting device 2 that lifts the cloth piece Y moves to the position indicated by the chain line (position 2 '), the lower side of the lifting cloth piece Y enters the space between the rollers 31, 32', Thereafter, the roller 32 'is closed and the upper and lower intermediate positions of the lifted cloth piece Y are clamped from both sides by the rollers 31, 32. Thereafter, the chuck 21 ′ of the lifting device 2 is opened, and the upper half of the cloth piece is placed on the rollers 31 and 32 with the upper and lower intermediate parts of the cloth piece Y held between the rollers 31 and 32 as shown in FIG. Placed. At this time, as shown in FIG. 6, the lower part of the cloth piece Y is hung down from the part sandwiched between the rollers 31 and 32 (joint part of both rollers), and the detector 37 detects the presence of the cloth piece. Detected (ON state). In many cases, one corner end of the cloth piece is located at the lower end Yc of the hanging part of the cloth piece.

  Next, the motor 35 is actuated to the cloth piece raising side to rotate both rollers 31 and 32 in the direction of the arrow in FIG. 6 and raise the cloth piece hanging portion upward. Then, as shown in FIG. 7, when the lower end Yc of the cloth suspending portion is raised above the monitoring position of the detector 37, the detector 37 enters the cloth non-detection state (OFF), and the motor 35 is immediately turned off. A signal to stop is issued. When the detector 37 changes from the cloth piece detection state (ON) to the cloth piece non-detection state (OFF), the cloth piece corner end Yc is positioned at a position closest to the lower surface side of both roller joints in the claims. This is when it is detected.

  In the state of FIG. 7, the closest position of the lower end (one piece corner end) Yc of the cloth piece hanging portion is located at the joint portion between the rollers 31 and 32.

  Next, from the state of FIG. 7, both rollers 31, 32 (and both mounting bases 33, 34) are reversed upside down by a reversing device (motor) 39, and as shown in FIG. The entire cloth piece is hung down in a rod shape with one cloth piece corner end Yc held between the joints.

  As shown in FIG. 8, the cloth piece Y hung down from the joint part of both the rollers 31 and 32 is received by the corner | angular edge removal apparatus 4, This corner | angular edge removal apparatus 4 is shown in FIG.1 and FIG.9. As described above, the chuck 41, the left / right moving cylinder 42 for moving the chuck 41 back and forth, and the forward / backward moving cylinder 43 for moving the chuck 41 back and forth together with the left / right moving cylinder 42 are provided. As shown in FIGS. 6 to 8, the chuck 41 is moved left and right and back and forth at the height position near the lower surface side of both roller joint portions.

In this corner chamfering device 4, when the chuck 41 is in the rear standby position shown in FIG. 1 (a position directly below the chuck 51 of the corner end lifting device 5 described later), the longitudinal movement cylinder 43 is extended. When the chuck is moved to the front standby position (the state shown in FIGS. 6 to 8 and the solid line shown in FIG. 9), and the cloth piece Y is hung down to the state shown in FIG. 8 and the solid line shown in FIG. Next, the left / right cylinder 42 contracts and the chuck 41 holds the position near the upper end of the cloth piece Y to move the chuck to the position 41A in FIG. The chuck is moved to the position of reference numeral 41B, and then the left and right moving cylinder 42 is extended to move the chuck to the position of reference numeral 41C (the chuck position of reference numeral 41C is the cloth piece delivery position). In the meantime, the cloth piece moves from the position of Y to the position of Y ₃ through the position of Y _{1 and} the position of Y _{2 while} being suspended from the chuck 41.

  As shown in FIG. 10, the cloth piece Y received by the chuck 41 of the corner trimming device 4 protrudes slightly above the portion gripped by the chuck 41, but this protruding portion (reference Yc portion). Is one corner end Yc of the cloth piece Y.

  The cloth piece Y held by the chuck 41 of the corner edge picking device 4 is received by the corner edge lifting device 5. As shown in FIGS. 1 and 10, the corner end suspension device 5 includes a chuck 51, a first front / rear movement cylinder 52 that moves the chuck 51 back and forth, and the first front / rear movement cylinder 52 together with the chuck 51. And a second vertically moving cylinder 53 for vertically moving and a vertically moving device (motor 54 and cable 55) for vertically moving all of them (51, 52, 53). In addition, the corner end suspension device 5 functions as a part of a short side out device 6 described later.

  As shown in FIG. 10, the chuck 51 of the corner end suspension device 5 stands by just above the chuck 41 of the corner end removal device 4 at the delivery position. When the chuck 41 of the corner edge picking device 4 holds the cloth piece Y and moves to the delivery position, the motor 54 operates downward to remove the chuck 51 of the corner edge lifting device 5. The upper end portion (one piece corner end Yc) of the cloth piece Y is lowered by the corner end suspension device side chuck 51 so as to be lowered to a position close to the apparatus side chuck 41 (position 51 '). It is adapted to receive from the side chuck 41. Then, after receiving the upper end portion of the cloth piece (one cloth piece corner end Yc) by the corner end lifting device side chuck 51, the motor 54 operates upward to suspend the cloth Y to the height shown in FIG. increase. In a state where the cloth piece Y is lifted by the chuck 51 of the corner end lifting device 5 (FIG. 11), one cloth piece corner end Yc is gripped by the chuck 51, while the gripping corner end Yc One corner piece Yd at the diagonal position is positioned at the lowermost end of the lifted cloth piece Y.

  As shown in FIGS. 11 to 14, the fabric piece Y lifted by the corner end suspension device 5 has a short side Ya on the lower side of the fabric piece (FIG. 13, FIG. 14). . The short side out device 6 includes a lower end clamping device 61 that clamps a lower end (becomes a diagonal end Yd) of the cloth piece Y suspended from the chuck 51 of the corner end suspension device 5, and a chuck 51 and the lower end clamping unit. A blower 65 that works to widen the lower side of the lower end of the cloth Y while holding the two diagonal ends Yc and Yd of the cloth Y with the device 61, and a lower part of the hanging cloth Y are expanded. A suction box 66 to be sucked in a state of being held, and two presser plates 70, 70 for pressing the lower side portion of the cloth piece Y sucked by the suction box 66.

  As shown in FIGS. 11 to 13, the lower end clamping device 61 is configured such that a pair of clamping pieces 63 and 63 are advanced and retracted in the approaching / separating direction by cylinders 62 and 62, respectively. In this lower end clamping device 61, the clamping pieces 63, 63 are moved closer to and away from the left and right sides slightly behind the cloth piece receiving position (just below the position of the chuck 51 in FIG. 11) by the corner end lifting device 5. It is installed as follows. In addition, the cloth piece Y suspended by the chuck 51 of the corner end suspension device 5 is positioned directly above both the sandwiching pieces 63 and 63 by extending the forward / backward movement cylinder 53 of the corner end suspension device 5. Can be made.

  As shown in FIG. 12, a pair of detection (light emitting side and light receiving side) for detecting whether or not the cloth piece Y is present between the holding pieces 63, 63 is provided in each holding piece 63, 63 of the lower end holding device 61. Units (phototubes) 64, 64 are provided. The detectors 64 and 64 detect the lowermost end (diagonal end) Yd of the cloth piece Y being lifted. Since the position of the lowermost end Yd of the suspended cloth piece Y slightly varies in the front-rear direction, in this embodiment, three pairs of left and right detectors 64, 64 are installed with a small interval in the front-rear direction. When the three sets of detectors 64 and 64 are all turned on, it is determined that the lower end (one diagonal end) Yd of the cloth piece Y is positioned at the holding portion height of the holding pieces 63 and 63. ing.

  When the cloth piece lower end detection signal is generated from each of the detectors 64, 64, the motor 54 of the corner end suspending device 5 is stopped, and the cylinders 62, 62 of the lower end nip device 61 are extended, and FIG. As shown in the chain line, the lower end portion (diagonal end) Yd ′ of the cloth piece is held between the holding pieces 63 and 63.

  As shown in FIG. 13, the blower 65 holds the upper and lower diagonal ends Yc and Yd of the cloth piece Y by the chuck 51 and the lower end holding device 61 (both holding pieces 63 and 63) of the corner end suspension device 5, respectively. Then, by blowing air A toward the lower part of the cloth piece Y, the cloth piece lower part is flapped, and the cloth piece Y held between the chuck 51 and the sandwiching pieces 63, 63 is shown in FIG. As shown by reference numeral 13 ', it is extended in a substantially triangular shape. At this time, the lower short side Ya of the cloth piece Y ′ stretched in a substantially triangular shape is stretched in a substantially straight line shape.

  Further, the cloth piece Y ′ (FIG. 13) expanded in a substantially triangular shape as described above has a chuck 51 for holding the upper end Yc as a holding part (a holding part between the holding pieces 63 and 63) at the lower end of the cloth piece Yd. , The cloth piece held by the cloth piece upper end holding part by the chuck 51 ′ and the cloth piece lower end holding part by the sandwiching pieces 63, 63 becomes the symbol Y ″ (FIG. 13). At that time, the lower short side of the cloth piece Y ″ is substantially horizontal as indicated by the reference numeral Ya ′. The chuck of the corner end suspension device 5 can be moved from the position of reference numeral 51 to the position of reference numeral 51 ′ by operating the motor 54 downward and reducing the first cylinder 52.

  The suction box 66 is installed so that the right side surface thereof is close to the left side of the cloth piece Y ″ that is expanded in the above-mentioned triangular shape. Are formed, and by sucking the inside of the suction box 66 with a vacuum fan 69, the lower stretch portion of the cloth piece is sucked on the right side of the box (the suction hole 67 forming surface). To get.

  On the lower surface portion of the suction box 66, a concave portion 68 having an appropriate volume that is recessed upward is formed at a position slightly closer to the front side from the front and rear center portion. The recess 68 is for allowing the two chucks 81 and 82 of the short chamfering device 8 to enter from below as described later (FIG. 15).

  Further, at the lower end portion of the right side surface (intake hole forming surface) of the suction box 66, two press plates 70, 70 are provided on both sides of the recess 68 to press the lower side portion of the cloth piece Y ″ (FIG. 13). The presser plates 70 and 70 swing up and down between a horizontal posture (FIGS. 11 and 13) and an upward posture (FIG. 14) joined to the right side surface of the suction box by the cylinders 71 and 71, respectively. It can be moved.

  Each of the holding plates 70 and 70 is normally opened in a horizontal position, but the piece of cloth is adsorbed on the right side surface of the adsorption box 66 in an attitude indicated by a symbol Y ″ in FIG. 13 (the lower end short side Ya ′ is horizontal). Then, as shown in FIG. 14, it is raised by the cylinders 71 and 71, respectively, so that the lower side of the cloth piece can be held at the two positions spaced apart by the holding plates 70 and 70, respectively. 14, when the lower side portion of the cloth piece Y is pressed by the presser plates 70, 70, the lower side short side Ya of the cloth piece is held in a straight line by the recessed portion 68. In addition, after pressing the lower side of the cloth piece with both pressing plates 70, 70, the chuck 51 of the corner end suspension device 5 is opened, and the upper side of the cloth piece is placed on the upper part of the suction box 66. .

  The suction box 66 is moved forward and backward by the cylinder 72 between the position shown by the solid line in FIG. 14 and the position shown by the chain line (position 66 '). Reference numeral 73 denotes a rail of the suction box 66.

  As shown in FIGS. 14 and 15, the short chamfering device 8 receives the lower side portion (lower side short side Ya) of the cloth piece that is stretched by the concave portion 68 on the right side surface of the suction box. As shown in FIGS. 14 to 17, the short chamfering device 8 includes two chucks 81 and 82 on the fixed side and the movable side, and a cylinder 83 that moves the movable side chuck 82 close to and away from the fixed side chuck 81. And a posture changing device (cylinder) 85 for changing both chucks 81, 82 upward and laterally (leftward), and a vertical movement device (motor 86 and rope 87) for moving them (81, 82, 83, 85) up and down. And have.

  As shown in FIG. 16, the movable side chuck 82 of the short chamfering device 8 comes close to the fixed side chuck 81 when the cylinder 83 is extended, and is fixed as shown by a chain line (reference numeral 82 ') when the cylinder 83 is reduced. The side chuck 81 is appropriately separated by a distance (for example, about 10 to 15 cm). Further, the gripping force of the cloth piece by the movable side chuck 82 is relatively loose. When the cloth piece is gripped by the movable side chuck 82 and moved in the separating direction from the fixed side chuck 81, A gripping portion of the chuck 82 slides on the cloth piece.

  The chucks 81 and 82 and the cylinder 83 are attached to the mounting base 84 so as to be rotatable about the shaft rod. By rotating the shaft rod with the cylinder 83, the chucks 81 and 82 are shown in FIGS. 16 and a lateral (leftward) orientation shown in FIGS. 17 and 18 can be displaced within an angle range of 90 °.

  The short chamfering device 8 operates as follows. First, before receiving the short side of the cloth piece, as shown in FIG. 14, the right side of the suction box 66 '(the position indicated by the chain line in FIG. 14) at the position where the chucks 81 and 82 are moved to the right in the proximity state and the upward posture. It waits in the position right under the cloth piece lower side part Ya extended by the surface. Then, after the suction box 66 in which the lower side of the cloth piece Y is stretched and held on the right side of the box is moved to the right (state of reference numeral 66 'shown by a chain line in FIG. 14), as shown in FIG. The motor 86 is moved upward to grip the lower part of the cloth piece (short piece Ya of the cloth piece) that is stretched at the concave portion 68 by the chucks 81 and 82. At this time, the fixed side chuck 81 holds a position close to the rear side corner end side of the cloth short side Ya. Thereafter, the presser plates 70 and 70 on the suction box 66 side are opened to the horizontal position as indicated by reference numerals 70 'and 70', and then the suction box 66 is retracted to the original position shown by the chain line in FIG. In this state, as shown in FIG. 16, the short side Ya of the cloth piece Y is gripped in a relatively narrow range with the two chucks 81 and 82 being close to each other. Subsequently, the cylinder 83 is reduced and the movable side chuck 82 is retracted to a position indicated by a chain line (reference numeral 82 '). At that time, the gripping portion of the movable side chuck 82 slides on the cloth piece, and the short side of the cloth piece. Is expanded linearly by a predetermined length as indicated by reference numeral Ya ′.

  Incidentally, as shown in FIG. 16, when both chucks 81 and 82 are in the upward state, most of the cloth piece Y hangs down, and the cloth piece short side Ya ′ held between the chucks 81 and 82 ′ It is facing down. Therefore, it becomes difficult to grip the short side Ya ′ of the cloth piece with the chuck 91 of the long side take-out device 9 described later.

  Then, the posture changing device (cylinder) 85 changes both chucks 81 and 82 ′ (state shown in FIG. 16) in the upward posture to a horizontal (leftward) posture as shown in FIG. 17. In the state of FIG. 17, the short side Ya of the cloth piece is slightly lateral at the gripping depth portion by the chucks 81 and 82, but the short side Ya portion is generally upward, and the short side Ya The portion can be received from above by the chuck 91 of the long edge extracting device 9 described later.

  As shown in FIGS. 17 to 18, the long edge take-out device 9 includes a chuck 91 that receives the upper side portion (short side Ya) of the cloth piece held between the chucks 81 and 82 of the short chamfering device 8, and It has a left-right movement device (motor 92 and cable 93) that moves the chuck 91 in the left-right direction, and a mounting table 94 on which the cloth piece Y that is horizontally pulled by the chuck 91 is placed.

  The chuck 91 of the long edge extracting device 9 has a grip portion that is slightly long in the front-rear direction. The chuck 91 is moved to the left and right in a range from a standby position immediately above both chucks 81 and 82 of the short chamfering device 8 to a position immediately above the right end portion of the mounting table 94.

  The mounting table 94 is installed such that the rear side edge is located almost immediately below the moving position of the chuck 91 at a position slightly lower than the moving height of the chuck 91. Three cutout grooves 95, 95, 95 are formed on the rear side edge near the right end of the mounting base 94 with a small left and right spacing. The gripping portions of three chucks 101, 101, 101 of the mounting device 10 described later enter the cutout grooves 95, 95, 95 (FIG. 20).

  The long edge extracting device 9 operates as follows. First, when the chucks 81 and 82 of the short chamfering device 8 are moved up from the state shown in FIG. 17, the upper side of the cloth piece (short side Ya) held between the chucks 81 and 82 is extracted from the long side. The sheet is received by the chuck 91 of the apparatus 9 (the state shown in FIG. 18). Thereafter, the motor 92 operates in the right movement direction, and the cloth upper side portion (short side Ya) held by the chuck 91 is laterally pulled to the right. The one hanging part is dragged onto the mounting table 94. As described above, when the upper part of the cloth piece (short side Ya) is held and the cloth piece hanging part is dragged onto the mounting table 94, the cloth piece hanging part is moved to the long side as shown by reference numeral Y 'in FIG. It is placed on the mounting table 94 while being extended. Then, after the chuck 91 has moved to the end portion indicated by reference numeral 91 ′ in FIG. 18, the chuck is released and the cloth piece Y lies on the mounting table 94 (the state shown in FIG. 19 is reached). In this state (FIG. 19), the rear long side Yb of the cloth piece Y placed on the platform 94 is substantially linearly bordered, and the portion near the right end of the rear long side Yb is placed. It rides on the notch grooves 95, 95, 95 of the base 94.

  The cloth piece Y (the rear long side Yb is bordered) placed on the platform 94 is placed on a posture correction device 11 described later by the placement device 10. The mounting device 10 includes three chucks 101, 101, 101 having gripping portions that can enter the three notch grooves 95, 95, 95 of the mounting table 94, and the chucks 101, 101, 101 in the front-rear direction. It has a back-and-forth motion device (motor 102 and cord 103) that moves back and forth in the direction. As shown in FIG. 20, the placing device 10 grips each chuck 101, 101, 101 by the longitudinal movement device (the motor 102 and the rope 103) and holds the long side Yb of the cloth piece Y on the placing table 94. It can be moved forward and backward between the forward position to hold and the rear position where the cloth piece long side Yb can be gripped and the cloth piece can be placed on the posture correcting device 11 described later.

  As shown in FIGS. 19 and 20, the posture correcting device 11 for placing the cloth piece Y has the placing belts 111 and 111 divided into two in the front and the back, and each of the placing belts 111 and 11 is placed on the platform. It is installed in a state of being close in the front-rear direction from the position directly below the portion where the 94 notch grooves 95, 95, 95 are formed. Each of the hanging belts 111 and 111 has a short top surface in the left-right direction, and can be placed in a state where the cloth piece Y is hung down on the left and right of the top surface of each belt as shown in FIG. Each of the belts 111 and 111 is individually operated by individual motors 112 and 112, respectively.

  As shown in FIG. 20, each of the chucks 101, 101, 101 of the placing device 10 grips the long side Yb of the cloth piece, and each chuck 101 moves to a rear position indicated by a chain line (reference numeral 101 '). Then, when each chuck 101 'is opened, the short side of the cloth piece Y is placed on both the placing belts 111, 111 as shown in FIG.

  This posture correction device 11 has a guide plate 113 at a position closest to the lower portion of each of the belts 111 and 111. The guide plate 113 is swung between a vertical posture and a right-side tilt position (a position at which the cloth piece Y can be guided to a delivery device 12 described later) indicated by a chain line in FIG. . The guide plate 113 is provided with two detectors (photoelectric tubes) 114 and 114 at a height shorter than the upper side of the guide plate 113 with an interval shorter than the short side width of the cloth piece. Thus, it is possible to detect the level of the right short side Ya of the cloth piece Y straddled across the respective belts 111, 111.

  Then, as shown in FIG. 21, the posture correction device 11 is configured such that after the piece of cloth Y is placed over both the placing belts 111, 111, the respective placing belts 111, 111 is actuated in the right-hand feeding direction to feed the cloth pieces as indicated by reference numeral Y ′, and when the detectors 114 and 114 detect the leading short side Ya of the cloth piece Y ′, respectively, the motors 112 and 112 respectively. Is stopped so that the leading side short side Ya of the cloth piece Y ′ can be leveled (normal posture). After the leading short side Ya is leveled, the guide plate 113 is tilted to the right as indicated by reference numeral 113 '(FIG. 21), and both the motors 112 and 112 are simultaneously operated in the feeding direction, so that the cloth The piece Y ′ is sent out to the delivery device 12 side in a stretched state.

  The delivery device 12 includes a belt 121, a pressing roller 122 that contacts and separates from the back surface of the belt 121, and a guide plate 123. The presser roller 122 presses the leading edge of the cloth piece guided by the guide plate 113 ′ of the posture correction device 11 to the belt 121 side and sends it to the guide plate 123 side.

  The guide plate 123 of the delivery device 12 is swung between a vertical posture and a right-side tilt posture (reference numeral 123 ′) that delivers a piece of cloth onto the carry-out conveyor 13 by the cylinder 124.

  Then, the cloth piece Y received by the delivery device 12 is transferred onto the carry-out conveyor 13 through the tilted guide plate 123 ′. In addition, the cloth piece Y mounted on the carry-out conveyor 13 is conveyed to the folding apparatus side which is not shown in figure.

  The rectangular cloth piece unfolding apparatus of this embodiment automatically unfolds the cloth piece Y in a rolled state, which is sequentially supplied by the supply conveyor 1 as shown in FIG. 2, through the respective steps shown in FIGS. 2 to 21. it can.

  In this embodiment, as described above, one corner piece Ya can be made to appear almost certainly by the corner edge picking device 3 (FIGS. 2 to 8). It is possible to greatly reduce the probability that the deployment work will fail.

It is a whole perspective view of the rectangular cloth piece expansion | deployment apparatus provided with the corner | angular edge extraction apparatus of this-application Example. It is an expansion perspective view of the supply conveyor of the expansion | deployment apparatus of FIG. FIG. 3 is a state change diagram from FIG. It is the side view which looked at the corner | angular_edge extraction apparatus of FIG. 3 from the front side. It is a left view of the corner | angular edge extraction apparatus of FIG. FIG. 6 is a partially enlarged view of FIG. 5 illustrating the operation of the corner edge extracting device. FIG. 7 is a state change diagram from FIG. 6. FIG. 8 is a state change diagram from FIG. 7. It is explanatory drawing at the time of delivering a cloth piece from a corner | angular edge taking-out apparatus to a corner | angular edge taking-out apparatus. It is explanatory drawing at the time of delivering a cloth piece from a corner | angular edge collection apparatus to a corner | angular edge suspension apparatus. It is explanatory drawing at the time of delivering a cloth piece from a corner end suspension apparatus to a short edge taking-out apparatus. It is a partially expanded side view of FIG. It is a state change figure from FIG. It is a state change figure from FIG. FIG. 15 is a state change diagram from FIG. 14 and is an explanatory diagram when the cloth piece is transferred from the short edge taking device to the short edge taking device. It is a partially expanded perspective view of a short chamfering device. It is a state change figure from FIG. It is explanatory drawing at the time of receiving a cloth piece with a long edge taking device from a short edge taking device and taking out a long edge. It is a perspective view which shows the relationship between the cloth piece with which the long side was put out, and the placing apparatus. FIG. 20 is a partially enlarged view showing a state change from FIG. 19. It is a perspective view which shows the final process process of a cloth piece. It is a whole perspective view of a well-known rectangular cloth piece expansion | deployment apparatus. It is an expansion perspective view of the corner | angular edge extraction apparatus part in FIG. It is a state change figure from FIG. It is a state change figure from FIG.

Explanation of symbols

  1 is a supply conveyor, 2 is a lifting device, 3 is a corner edge picking device, 4 is a corner edge picking device, 5 is a corner edge lifting device, 6 is a short edge picking device, 8 is a short edge picking device, and 9 is a long side. Unloading device, 10 is a loading device, 11 is a posture correction device, 12 is a delivery device, 13 is a carry-out conveyor, 31 and 32 are rollers, 33 and 34 are mounting bases, 35 is a motor, 37 is a detector, 39 is reverse Device (motor), 41 is a chuck of a corner chamfering device, 51 is a chuck of a chamfering device, 61 is a lower end clamping device of a short edge device, 66 is a suction box, and 81 and 82 are chucks of a short chamfering device. , 91 is a chuck for a long side feeding device, 101 is a chuck for a placing device, 111 is a placing belt, Y is a rectangular cloth piece, Ya is a short side of the cloth piece, Yb is a long side of the cloth piece, and Yc is a cloth piece. The corner of

Claims (3)

A rectangular cloth piece cornering device used in a developing device that automatically unfolds a rectangular cloth piece (Y) conveyed in a rolled state into a rectangular shape,
A pair of rollers (31, 32) for holding the upper and lower intermediate positions of the rectangular cloth piece (Y) suspended while holding an arbitrary part from the horizontal direction on both sides thereof;
A motor (35) for rotating the rollers (31, 32) toward the cloth feeding side;
A detector (37) for detecting that the cloth lower end (Yc) is positioned at a position closest to the lower surface side of the joint portion of the rollers (31, 32);
When a cloth piece lower end detection signal is issued from the detector (37), the rotation of the rollers (31, 32) is stopped, and one cloth piece is disposed in the vicinity of the joint between the rollers (31, 32). The corner end (Yc) can be revealed.
A corner edge sticking device for a rectangular cloth piece.   2. The corner edge sticking device for a rectangular cloth piece according to claim 1, further comprising a reversing device (39) for reversing both rollers (31, 32) upside down. A method for cornering out a rectangular cloth piece when a rectangular cloth piece (Y) conveyed in a rolled state is developed into a rectangular shape,
Holding the upper and lower intermediate positions of the rectangular cloth piece (Y) suspended while holding an arbitrary position from both sides with a pair of rollers (31, 32),
The two rollers (31, 32) are rotated to the cloth feeding side, and one corner end (Yc) at the lower end of the cloth piece is lifted to a position closest to the lower surface side of the joint portion of the both rollers (31, 32). At this point, the rotation of the rollers (31, 32) is stopped, so that the cloth corner (Yc) appears at the joint between the rollers (31, 32).
A method for cornering a rectangular piece of cloth characterized by the above.

Images