JP4071763B2 - Cloth supply method and apparatus - Google Patents

Description

  The present invention relates to a method and apparatus for supplying cloth to a cloth folding machine for automatically folding a plurality of rectangular cloths (hereinafter simply referred to as “clothes”) such as towels, and more particularly to folding. The present invention relates to a cloth supply method and apparatus capable of correcting a transfer position and a feeding posture of cloth supplied to a section.

  At laundry factories, towels such as towels are washed, dewatered and dried in large quantities, then folded in the longitudinal direction from the stretched state to about four folds, and an appropriate number of the folded cloths are stacked. The product is shipped in a laminated state.

  By the way, as a cloth folding machine for automatically folding cloths such as towels, a conveying conveyor that conveys the cloths in a stretched state, and a folding device that folds the cloths in four at the terminal end of the conveying conveyor And a dropping device for sequentially dropping the folded cloths folded in four at a fixed position, and a carry-out conveyor for sequentially moving the laminated body in which the predetermined number of folded cloths are stacked one pitch at a time. Things are known.

  However, in the conventional cloth folding machine, when the cloth is placed on the transport conveyor start end, the operator must place the front edge of the cloth directly on the traveling conveyor. In addition, since there were various problems, a cloth holding portion that is installed so as to be able to advance and retreat in the cloth conveying direction at a position close to the upper surface of the starting end of the conveyor, and that can detachably hold the leading edge of the cloth, There is provided a cloth supply device provided with an advance / retreat driving device for moving the cloth holding portion forward and backward in the transfer direction of the transfer conveyor (Patent Document 1).

However, in the newly provided cloth supply device, the position of the end is determined to increase the quality at the time of stacking. Does not go up. In addition, when the processing speed is increased, the input becomes rough and the quality of the stack deteriorates.
JP-A-9-255137

  Therefore, the inventor is supported by the cloth folding device so as to be able to move back and forth in the cloth conveying direction, an advancing / retreating drive device for moving the support frame back and forth, and the support frame so as to be movable in the lateral direction. A cloth supply device comprising a cloth holding portion for a cloth and a lateral movement drive device for moving the cloth holding portion in a direction orthogonal to the direction in which the cloth is conveyed. A sensor is provided in parallel, and a device for operating the lateral movement driving device and determining the size of the fabric based on the detection results of the fabric by the plurality of sensors has been developed (Japanese Patent Application No. 2003-368847).

  However, the developed device performs position correction by moving the upper half of the fabric in the direction perpendicular to the conveyance direction, so the lower half may not follow the movement of the upper half. The cloth is supplied to the subsequent conveyor in an inclined state and supplied to the folding device as it is, so that the corners are not aligned and the finished product is not good because the corners are not aligned. It turns out that there is a problem.

  Therefore, the present invention provides a cloth supply method and apparatus capable of correcting the right and left positions of not only the upper half of the cloth but also the lower half of the cloth and supplying the folding apparatus with the four corners of the cloth aligned with the conveying direction. The purpose is to do.

  In order to solve the above problem, the inventor corrects the position of the upper half of the fabric and corrects the left and right positions of the lower half, so that the sides of the fabric are aligned with the transport direction and supplied to the folding device. Made it possible to do.

That is, the gist of the present invention is the following methods (1) to (5).
(1) The first step of holding the upper end of the cloth and moving the cloth in the direction perpendicular to the conveying direction to correct the bias of the upper half of the cloth, holding the hanging part of the cloth, The cloth supply method which has the 2nd process of correcting the bias | inclination of the lower half part of cloth by parallel-translating to the same direction simultaneously with the process of this.
(2) The cloth supply method according to (1), wherein the second step holds the hanging portion of the cloth by applying a suction force in the same direction as the conveying direction.
(3) The cloth supply method according to (1) or (2), wherein in the second step, the bias of the lower half of the cloth is corrected based on a signal from the second sensor group.
(4) The first step is characterized by correcting the bias of the upper half of the fabric and determining the size of the fabric based on a signal from the first sensor group. ) Any of the cloth supply methods.
(5) A cloth folding method in which the cloth supplied by the cloth supply method of (4) is folded and stacked according to size based on a signal from the first sensor group.

The gist of the present invention is the following devices (6) to (10).
(6) A cloth supply device for aligning the four corner directions of the spread cloth and supplying it to the cloth folding apparatus, holding the upper end of the cloth and moving it in the transport direction and the direction perpendicular to the transport direction A possible cloth holding part, a first sensor group which is arranged below the cloth holding part and detects the bias of the upper half of the cloth held by the cloth holding part, and the first sensor group A left and right drive device for moving the cloth holding portion in a direction perpendicular to the conveying direction based on a signal from the signal and a first sensor group, which holds the hanging portion of the cloth and is parallel to the cloth holding portion A cloth supply apparatus comprising: a posture correcting device that moves; and a second sensor group that is disposed in the posture correcting device, detects a movement of a hanging portion of the cloth, and issues a movement stop signal of the posture correcting device.
(7) The posture correcting device has two parallel vacuum belts arranged in a direction perpendicular to the transport direction, and rotates the vacuum belt forward or backward while applying a suction force to the vacuum belt. (6) The cloth supply apparatus characterized by the above-mentioned.
(8) The first sensor group includes a pair of left and right outer sensors arranged substantially in the same width as the transport unit, and a pair of left and right inner sensors arranged inside the outer sensor. Item (6) or the cloth supply apparatus of (7).
(9) The cloth supply device according to (8), wherein the first sensor group emits a signal for determining the size of the cloth based on the signal from the outer sensor and the signal from the inner sensor. .
(10) A cloth configured in the same housing as the cloth supply device of (9), wherein the cloth sent from the cloth supply device is folded and stacked according to the signal from the first sensor group. Similar folding device.

The cloth supply device of the present invention has the following effects.
(1) Since the cloth can be supplied to the folding device in a correct posture, a product having four corners can be obtained.
(2) Since the alignment of the cloth is automatically performed, the operator only needs to put the cloth with an approximate register, so that the cloth can be input at high speed.
(3) Since cloth can be thrown into the exact position (width direction) of a folder, cloth can be folded and stacked accurately.
(4) Since the size of the cloth can be discriminated, it can be used even when the large and small cloths are mixed.
(5) Furthermore, in the cloth folding device of the present invention, since the cloth can be input at high speed and the cloth size can be automatically discriminated, the cloth can be stacked according to the size of the cloth.

When the first sensor group disposed orthogonal to the cloth conveyance direction detects the biased state of the cloth held by the cloth holding section and moves the cloth holding section laterally based on the detection result. At the same time, to move the hanging part of the cloth laterally, detect the movement position of the lower half of the cloth by the second sensor group, and stop the lateral movement of the hanging part of the cloth to correct the posture. A support frame that moves forward and backward along the cloth conveying direction, a cloth holding portion that is movable on the support frame in a direction perpendicular to the cloth conveying direction, and a cloth held by the cloth holding portion. A first sensor that detects the bias of the piece, a drive unit that moves the cloth holding unit that holds the cloth based on the detection result of the first sensor to a reference point, and a lateral movement that moves the hanging part of the cloth laterally Detects the movement of the cloth by the device and the lateral movement device, and stops the movement of the lateral movement device Constituting the cloth feed device and a second sensor group for.
Hereinafter, details of the present invention will be described with reference to examples, but the present invention is not limited to these examples.

  The cloth supply apparatus according to the present embodiment can fold a relatively small rectangular cloth such as a towel in a folded state, and can automatically and sequentially take out a suitable number of the folded cloths. The present invention is suitable for a cloth folding apparatus and a cloth folding machine that automatically selects two types of towels (for example, face towel and bath towel) of different sizes and stacks them in different positions.

  As shown in FIGS. 1 to 3, the cloth supply device includes a support frame 2, a cloth holding section 6 that is movably supported by the support frame 2 and can detachably hold the front edge of the cloth, A first sensor group that detects the amount of lateral deviation of the upper side portion of the cloth, a left-right motion drive device 11 that moves the cloth holding portion 6 in the left-right direction on the support frame 2, and an upper side portion by the left-right motion drive device 11 A second sensor group that detects the amount of lateral deviation of the lower side of the cloth after the movement of the cloth, and a posture correction device 30 that operates by comparing the detection result of the first sensor group with the detection result of the second sensor group, And an advancing / retreating drive device 15 for advancing and retracting the support frame 2 in the transport direction.

《Support frame》
The support frame 2 is stretched between the side frame 3 that can be moved back and forth along the rail 1 that is attached to the machine frame 41 of the application target device (for example, a cloth folding device), and the side frames 3 and 3. 6 and a rail 4 that supports the left and right movements.

《Cloth holding part》
The cloth holding unit 6 is a relatively thin box-shaped mounting unit 7 having a rectangular shape that is long in the width direction of the transfer conveyor 42 of the application target device and having a hollow inside, and air inside the mounting unit 7 to the outside. And a suction fan 8 for discharging. The front half of the mounting portion 7 is considerably thinner than the thickness of the latter half. The upper surface plate 9 in the front half of the mounting portion 7 is inclined downward toward the front side, and the tip of the front half of the mounting portion 7 is made thin, for example, about 15 mm. The upper surface plate 9 in the front half of the placement portion 7 is provided with intake holes 10 made up of a number of small holes, and the upper surface of the front half of the placement portion 7 attracts and holds the front edge of the cloth. can do.

  In addition, two suction fans 8 and 8 are attached to the rear half of the mounting portion 7 at a predetermined interval. In the cloth holding portion 6, when each suction fan 8, 8 is operated, air in the placement portion is removed so that air is sucked into the placement portion 7 from a large number of intake holes 10. It has become. The cloth adsorbing force by the cloth holding unit 6 can hold and hold the cloth, and the tension force generated when the cloth hanging part comes into contact with the start end of the conveyor 42 as will be described later. It is set to such an extent that the edge part is easily peeled off from the air intake surface of the cloth holding part.

《Left-and-right drive unit》
The left-right drive device 11 moves the cloth holding part 6 supported so as to be movable along a pair of rails 4, 4 constituting the support frame 2 in parallel to the front edge of the transport conveyor 42. The motor holding part 6 is configured by a motor 12, a rack 13 attached to the support frame, and a pinion 14 attached to the motor shaft.
The cloth holding unit 6 can move back and forth in parallel with a traveling surface near the start end of the transport conveyor 42 at a position separated by, for example, about 5 to 10 mm from the upper surface of the start end of the transport conveyor 42. . In addition, it is preferable to make the space | interval between the lower surface of the cloth holding | maintenance part 6 and the upper surface of the conveyance conveyor 42 as small as possible to such an extent that the stretched cloth can be passed.

Further, in this embodiment for treating face towels and bath towels, the width of the cloth holding portion 6 is set to about 730 mm in consideration of workability and product dimensions, and the stroke of the left and right movement of the cloth holding portion. Was set to 85 mm.
In this embodiment, the entire cloth holding part 6 is moved left and right, but the holding part is fixed and the perforated plate or the conveyor belt is moved left and right along the upper surface of the placing part. Also good.

<< First sensor group >>
Sensors S2 and S3 and sensors S4 and S5 are provided on the front plate of the machine frame 41 symmetrically with respect to the center line of the machine frame in order to determine the size of the thrown-in cloth and to detect the loading position. It has been. In this embodiment, the distance between the sensors S2 and S5 at both ends is set to about 620 mm, and the distance between the middle sensor S3 and sensor S4 is set to about 300 mm.
In the present embodiment, the sensor mounting portion 5 is formed on the front plate of the machine casing 41. However, a sensor mounting plate on which the sensor is mounted may be mounted on the front plate of the machine casing 41.

  In the figure, S1 is provided in the cloth holding section 6, senses that the cloth is supplied to the placement section 7, and moves to the left and right for driving the cloth holding section 6 in the left-right direction and the forward / backward drive apparatus. In the present embodiment, the cloth holding unit 6 is provided with sensors S6 and S8 for detecting the lateral movement left and right limit positions of the cloth holding unit 6 and the support frame 2. A sensor S7 for detecting the center of the cloth supply unit 6 relative to the support frame 2 by detecting the mirror M is provided.

  The first sensor group can determine the size of the cloth and can control the subsequent folding operation, discrimination, and stacking operation. Among the sensor groups in the arrangement, the sensor S3 or S4 Small when only fabric senses, sensor S3 and sensor S4 sense fabric, sensor S2 and sensor S3 sense fabric, and sensor S4 and sensor S5 sense fabric Judging cloth, when sensor S2, sensor S3 and sensor S4 sense cloth, sensor S3, sensor S4 and sensor S5 sense cloth, and sensor S2, sensor S3, sensor S4 and sensor S5 If it detects a cloth, it is determined to be a large cloth (see Table 1).

  Determine whether the towel width is large or small with sensors S2 to S5, and if the towel is small, rotate the motor forward or backward until sensor S4 senses one side of the cloth (In the case of cases 1 and 4 in Table 1) or until it is no longer detected (in cases 2 and 3 in Table 1), the cloth holder 6 is moved along the rail 1 and the determined towel is In the case of large, the cloth holding part 6 is moved to the rail until the sensor S5 senses one side of the cloth (case 6 in Table 1) or until it is not detected (cases 7 and 8 in Table 1). 1 is moved horizontally along the left and right positions of the cloth to a fixed position.

《Expanding device》
Immediately below the starting end of the transport conveyor 42, there is provided a stretching device 20 for stretching the hanging portion of the cloth held on the front half of the placing section 7 of the cloth holding section 6 vertically and horizontally. Yes. The expansion device 20 includes a vertical expansion suction box 21 having an opening immediately below the starting end of the transport conveyor 42, and a suction fan 22 that sucks the air in the expansion suction box 21 downward. Yes. The opening of the expansion suction box 21 is at a position spaced downward from the starting end of the transport conveyor 42 by, for example, about 300 mm.

  The expansion device 20 operates as follows. That is, in the stretcher 20, the damper 24 is released by the cylinder 23 and a suction force is generated in the stretch suction portion, and the cloth holding portion 6 holding the cloth leading edge is retracted. Is rotating at a high speed, and when the cloth holding portion 6 is moved backward and the cloth hanging portion comes into contact with the feeding roll 25, the peripheral speed of the feeding roll 25 is several times faster than the retreating speed of the cloth holding portion 6. Therefore, the cloth hanging part is fed into the stretching suction box 21 by the frictional force between the cloth hanging part and the feeding roll 25, and the cloth hanging part fed into the stretching suction box 21. Is flipped back and forth and stretched up and down and left and right. Therefore, when such a stretching apparatus is used, when the fabric is supplied onto the starting end portion of the transport conveyor 42, an operation of manually stretching the fabric hanging portion is not required.

<< 2nd sensor group >>
The sensors S11 to S14 constituting the second sensor group are arranged symmetrically with respect to the center line of the machine frame in order to detect the movement position of the lower half of the cloth on the rear plate of the suction box 21. The sensors S11 and S12 are provided below the sensors S2 and S3 and the sensors S4 and S5. In this embodiment, the distance between the sensors S9 and S12 at both ends is set to about 620 mm, and the distance between the middle sensor S10 and the sensor S11 is set to about 300 mm.

  Since the upper side of the cloth is supplied to the cloth holding unit 6 by the operator, the lower half of the cloth hangs down. Therefore, when the lower half of the cloth is sucked into the suction box 21, the sensor S2 The left and right positions of the lower half are sensed by the sensors S11 to S14 corresponding to .about.S5.

《Attitude correction device》
The posture correcting device 30 includes vacuum belts 31 and 31 having a plurality of upper and lower small holes arranged on the rear plate of the expansion suction box 21, a suction fan 32 for generating a suction force, The second sensor group S11 to S14 disposed between the vacuum belts 31 and 31.

  When the vacuum belts 31 and 31 are driven in the same direction as the movement direction of the cloth holding unit 6 simultaneously with the correction of the left and right positions by the left and right driving device 11, the cloths are sucked by the vacuum belts 31 and 31, so the vacuum belt The lower half of the cloth can also be moved in accordance with the rotation of 31, 31 to correct the posture. That is, the posture correcting device 30 is controlled as shown in Table 2 in conjunction with the movement of the cloth holding unit 6.

《Advance and retreat drive device》
The advancing / retreating drive device 15 is moved vertically on the transport conveyor 42 by the telescopic cylinder 16. The advancing / retreating drive device 15 is configured to advance and retract the cloth holding unit 6 between a standby position on the near side and a retreating position (for example, in a range of about 600 mm). When the cloth holding portion is in the standby position, the front end portion of the cloth holding portion protrudes to the front side by, for example, about 200 to 300 mm from the starting end portion of the transport conveyor 42, while the cloth holding portion 6 is When in the retracted position, the front end portion of the cloth holding portion 6 is positioned behind the start end portion of the transport conveyor 42 by, for example, about 400 to 300 mm.

In this embodiment, the advancing / retreating drive device 15 advances and retracts the cloth holding unit 6 at a speed that is about twice the conveying speed of the conveying conveyor 42 (about 60 m / min). The advancing / retreating drive device 15 is a sensor S1 that detects when the front edge of the cloth is placed on the upper surface of the front half of the placing section 7 with the cloth holding section 6 positioned at the standby position. Is reduced by the signal from, and after the cloth holding part has been retracted to the retracted position through the intermediate retracted position, it is immediately expanded by a signal from a sensor (for example, a limit switch (not shown)) that detects the retracted position, It operates to advance the cloth holding part to the original standby position.
In this embodiment, the reduction-side start of the advancing / retreating drive device is performed by a signal from a sensor that detects when the cloth front edge is placed on the front half of the placement portion. However, you may make it start to the reduction side by the foot switch by an operator.

<Operation of cloth supply device>
The cloth supply device of this embodiment operates as follows. At the start of operation, the cloth holding unit 6 stands by at the standby position on the front side, the conveyor 42 is continuously running, and the suction fan 8 of the cloth holding unit 6 is continuously operated. From this state, when the front edge of the cloth is placed on the front half of the placement section 7 of the cloth holding section 6, the front edge of the cloth is placed on the placement section 7 by being sucked from the intake holes 10. It is adsorbed on the first half. At that time, the sensor S1 detects that the cloth leading edge has been placed on the placing portion.

  Sensor S2-S4 determines whether the towel width is large or small, and if the towel is small, rotate the motor forward or reverse until the sensor S4 senses one side of the cloth ( In the case of judgments 1, 2, and 4 in Table 1, the cloth holding part is moved laterally along the rail, and if the judged towel is large, the sensor S5 detects one side of the cloth. The cloth holding portion is moved laterally along the rail until it is detected (until no detection is made in the case of judgments 6 and 7 in Table 1).

At the same time, the vacuum belts 31 and 31 of the posture correcting device are operated as shown in Table 2 to move the lower half of the fabric in the lateral direction to correct the posture of the entire fabric.

  Further, when the advance / retreat driving device 15 is contracted by the detection signal and the front edge of the cloth holding portion 6 is moved backward from the start end of the transport conveyor 42, the hanging part of the cloth is the start end of the transport conveyor 42. The upper part of the cloth holding part is in contact with the upper part (the frictional force is generated), but at this time, the retreating speed of the cloth holding part is significantly faster than the traveling speed of the conveying conveyor 42. Tension is generated between the contact portion and the contact portion. At this time, the frictional force due to contact with the leading end of the conveyor 42 is greater than the suction force on the cloth leading edge, and the cloth leading edge is separated from the suction portion of the cloth holding part 6 by the tension applied to the cloth. It will come off automatically.

  Then, the cloth leading edge part peeled off from the cloth holding part 6 falls on the transport conveyor 42, and the entire cloth is fed back on the transport conveyor 42. The advancing / retreating drive device 15 is operated so that the cloth holding portion 6 is moved back to the retracted position, and then the cloth holding portion 6 is immediately moved forward to return to the original standby position.

  The present embodiment is an example in which the cloth supply apparatus of the first embodiment is applied to a cloth folding apparatus. For example, a rectangular cloth having a relatively small area such as a towel is folded in four, and the folded cloth. Cloth that can be taken out automatically in a state where an appropriate number of sheets are stacked, and in addition, two types of towels (for example, face towels and bath towels) of different sizes can be automatically selected and stacked at different positions. It relates to a folding machine.

  As shown in FIG. 4, the cloth folding machine of the present embodiment has left and right side plates having guide means for the cloth supply device on the inside, a machine frame having a front plate forming a sensor mounting portion, and a space between the side plates. A conveyor that is installed in a state of running parallel to the side plate, a cloth supply device that includes a cloth holding unit for supplying cloth to the start end of the transfer conveyor, and a supply on the start of the transfer conveyor A stretching device for stretching the hanging portion of the cloth, a folding device for folding the cloth into four at the end of the conveyor, and a stacking device for stacking the cloth according to size.

<Conveyor>
The conveyor 42 uses a plurality of narrow belts arranged in parallel at small intervals. In this embodiment, a conveyor belt having a length of about 1600 to 1700 mm and a width of about 800 to 900 mm is adopted. For example, the motor can continuously run at a speed of about 30 m / min.

<Folding / stacking>
The folding unit includes a transport conveyor 42, a transport conveyor drive motor 43, sensors S7 and S8 disposed above the transport conveyor 42 at a predetermined interval, a sensor S9 disposed above the end of the transport conveyor 42, A feed conveyor 44 disposed below the transport conveyor 42 and fed to the stacking portion of cloth folded by the transport conveyor 42; a folding plate 45 for feeding the cloth between the transport conveyor 42 and the feed conveyor 44; The cylinder 46 is configured to move the folding plate 45 back and forth, and the fixing plate 47 that holds the front end of the cloth.
The feeding conveyor 44 is rotated by a driving motor 43 for the conveying conveyor 42 in the opposite direction to the conveying conveyor 42.

  In addition, the stacking unit is opposed to the lower surface of the transport conveyor 42, and is capable of swinging between a position where a stack of cloths folded in four in cooperation with the conveyor and a position where the cloths are dropped, Second plates 48 and 49, cylinders 50 and 51 for swinging the plates 48 and 49, a sensor S10 provided above the first plate 48, and a quadruple being conveyed based on a signal from the sensor S10 A presser plate 52 that presses the cloth against the first plate 48, a cylinder 53 that operates the presser plate 52, a stopper 54 provided at the end of the transport path of the four-folded cloth, and the first and second The first carry-out conveyor 55, the second carry-out conveyor 56, the first carry-out conveyor drive motor 57, and the second carry-out conveyor 56 disposed below the plates 48, 49 are disposed in the rollers. The drive mode of the carry-out conveyor 56 It is composed of a motor 58.

<Operation of folding and stacking parts>
The cloth fed into the cloth folding apparatus 40 by the cloth supply apparatus of the present embodiment is transported toward the folding section by the transport conveyor 42 that travels at a constant speed by the motor 43. It passes under the sensors S7 and S8 during the conveyance, and the total length of the cloth is measured from the time sensed by the sensor S7 or S8.
Further, since the leading end of the conveyed fabric hangs down from the leading end of the conveyor 42, the sensor S9 detects the start of the sag and sees the timing after the detection of the sensor S9 (if the length of 1/4 of the fabric hangs down). ), The folding plate 45 operated by the cylinder 46 moves to the right and presses the front end 1/4 of the cloth into the fixed plate 47. Next, the remaining 2/4 of the total length hangs down from 1/4 of the pressed cloth. At the same time, the folding plate 45 moves to the left, pushes the article between the conveyor 42 and the feeding conveyor 44, and conveys the cloth in the folded state by both conveyors in the direction of the stack (left direction in the drawing). Let

When the four-folded cloth sent to the stacking portion is large, the sensor S10 senses it, and the cylinder 53 is actuated by seeing the timing after the detection, and the presser plate 52 is rotated downward to be folded in four. The cloth is pressed against the first plate 48 and stopped. At the same time, the cylinder 50 is actuated to release the first plate 48, and the four-fold cloth is dropped onto the stopped first carry-out conveyor 55, and the four-fold cloth sent to the stacking section Is small, the cloth folded in four passes on the first plate 48 as it is, hits the stopper 54 and stops. At the same time, the cylinder 53 is operated to release the second plate 49, and the cloth folded in four is dropped onto the second carry-out conveyor 56 that is stopped. Then, when the four-fold cloths that are continuously fed are separated and stacked on the carry-out conveyor by a specified number, the carry-out conveyor is moved by the drive motor by a specified amount, and the subsequent four-fold cloth is stacked. Secure.
In the above embodiment, the sensor S10 senses that the fabric is large and operates the dropping device. However, based on the fabric size determination signal by the sensors S2 to S5 provided in the fabric supply device. Then, the cloth folding device 40 and the dropping device may be operated.

It is a top view of the cloth holding part of the device concerning Example 1. 1 is a side view of a front side of an apparatus according to Embodiment 1. FIG. 1 is a front view of an apparatus according to Example 1. FIG. 6 is an overall side view of an apparatus according to Embodiment 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rail 2 Support frame 3 Side frame 4 Rail 5 Sensor attachment part 6 Cloth holding part 7 Placement part 8 Suction fan 9 Top plate 10 Intake hole 11 Left-right motion drive device 12 Motor 13 Rack 14 Pinion 15 Advance / retreat drive part 16 Cylinder 17 Towel 20 Spreading device 21 Suction box 22 Suction fan 23 Cylinder 24 Damper 25 Feed roll 30 Attitude correction device 31 Vacuum belt 32 Suction fan 40 Fabric folding device 41 Machine frame 42 Conveyor conveyor 43 Conveyor drive motor 44 Infeed conveyor 45 Fold Plate 46 Folding plate driving cylinder 47 Fixed plate 48 First plate 49 Second plate 50 First plate driving cylinder 51 Second plate driving cylinder 52 Presser plate 53 Presser plate driving cylinder 54 Stopper 55 First Unloading conveyor 56 Second unloading conveyor 57 Carry-out conveyor drive motor 58 the second carry-out conveyor drive motor for the

S1 ~ S14 sensor
M mirror

Claims (10)

The upper end portion of the cloth is held by the cloth holding portion movable in the conveyance direction and the direction orthogonal to the conveyance direction, and held by the cloth holding portion by the first sensor group disposed below the cloth holding portion. A first correction for detecting the bias of the upper half of the cloth and correcting the bias of the upper half of the cloth by moving the cloth holding portion in a direction perpendicular to the transport direction based on a signal from the first sensor group . And the process of
The posture correction device arranged below the first sensor group holds the hanging portion of the cloth, and the posture correction device moves the cloth directly in the transport direction while detecting the movement of the hanging portion of the cloth by the second sensor group. cloth supply method and a second step of correcting the bias of the lower half of the cloth by moving in the direction of. The cloth supply method according to claim 1, wherein the second step holds the hanging portion of the cloth by applying a suction force to the posture correcting device . The posture correcting device has a vacuum belt arranged in a direction perpendicular to the conveying direction;
The second step is characterized in that the fabric is moved in a direction perpendicular to the transport direction by rotating the vacuum belt forward or backward while applying a suction force to the vacuum belt of the posture correcting device. Item 2. The cloth supply method according to Item 2 . The cloth supply method according to any one of claims 1 to 3 , wherein in the first step, the size of the cloth is determined based on a signal from the first sensor group. A folding unit for folding the fabric and a stacking unit for stacking the folded fabric are provided,
5. The cloth supply method according to claim 4, further comprising a third step of stacking cloths according to size based on a signal from the first sensor group . A cloth supply device for aligning the four corner directions of the spread cloth and supplying it to the cloth folding process ,
A cloth holder that holds the upper end of the cloth and is movable in the transport direction and the direction perpendicular to the transport direction, and a cloth holder that is disposed below the cloth holder and is held by the cloth holder. a first sensor group for detecting the deviation of the halves, left and right driving device for moving in a direction perpendicular to cloth holding portion based on a signal from the first sensor group in the conveying direction, is disposed below the first sensor group , holding the dangling portion of the cloth, and the posture correction device which Ru is translating the cloth holding unit detects the movement of the dangling portion of the cloth, and a second sensor group that emits an actuation control signal of the posture correction device Having cloth supply device. 7. The cloth according to claim 6, wherein the posture correcting device has a vacuum belt arranged in a direction orthogonal to the conveying direction, and rotates the vacuum belt forward or backward while applying a suction force to the vacuum belt. Kind supply device. Wherein the first sensor group, generally an outer sensor which is arranged at the same width, cloth according to claim 6 or 7, characterized in Rukoto an inner sensor disposed from the outer sensor inside the supply to the conveying unit apparatus.   9. The cloth supply device according to claim 8, wherein the first sensor group emits a signal for determining the size of the cloth based on a signal from the outer sensor and a signal from the inner sensor. 10. The cloth according to claim 9 , further comprising a folding section for folding the cloth and a stacking section for stacking the folded cloth, and the cloths are stacked according to a size based on a signal from the first sensor group. Feeding device.

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