EP1820894B1 - Verfahren und vorrichtung zum ausbreiten und tragen von tuch - Google Patents

Verfahren und vorrichtung zum ausbreiten und tragen von tuch Download PDF

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Publication number
EP1820894B1
EP1820894B1 EP05793181.8A EP05793181A EP1820894B1 EP 1820894 B1 EP1820894 B1 EP 1820894B1 EP 05793181 A EP05793181 A EP 05793181A EP 1820894 B1 EP1820894 B1 EP 1820894B1
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EP
European Patent Office
Prior art keywords
cloth
spreading
carrying
chuck
horizontally moving
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Expired - Fee Related
Application number
EP05793181.8A
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English (en)
French (fr)
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EP1820894A4 (de
EP1820894A1 (de
Inventor
Kouji Purex Corporation MOTOKI
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Purex Corp
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Purex Corp
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Publication of EP1820894A1 publication Critical patent/EP1820894A1/de
Publication of EP1820894A4 publication Critical patent/EP1820894A4/de
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Publication of EP1820894B1 publication Critical patent/EP1820894B1/de
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C3/00—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F67/00—Details of ironing machines provided for in groups D06F61/00, D06F63/00, or D06F65/00
    • D06F67/04—Arrangements for feeding or spreading the linen

Definitions

  • the present invention relates to a cloth spreading and carrying device and method for spreading cloth, such as cloth having a large area, and carrying the cloth in the spread state to a device in a next process, such as a press or a folder.
  • cloth used in the present invention means rectangular cloth represented by sheets and towels.
  • the washed cloths are successively subjected to dehydrating, drying, pressing and folding processes, for example, while the cloths are carried along a certain line.
  • the pressing process particularly, the cloth has to be inserted into the line in a state properly spread in advance.
  • the operation of spreading the large-sized cloths and inserting them into the line without disorders one by one is hard to perform and imposes a large physical load on a worker when manually performed.
  • a known spreading and carrying device in which cloth is treated through the steps of grasping cloth by clamps at both corner regions thereof, moving the cloth upward by an ascending/descending means, re-grasping the cloth at both the corner regions thereof by other clamps to laterally spread the cloth, delivering the spread cloth to a conveyor for carrying it to a next process, and rotating the conveyor to carry the cloth to the next process (see, for example, Patent Document 1).
  • the device disclosed in Patent Document 1 has the problem as follows. Until the lowermost end of the cloth having been delivered from the spreading clamps onto the conveyor is moved out from a start end portion of the conveyor, a inserting device and an spreading device cannot be brought into the operation for moving the next cloth and they are kept in a standby state for the purpose of matching in delivery timing. Accordingly, there occurs a time lag from the timing at which the next cloth is grasped by the inserting device to the timing at which it is spread in front of the conveyor by the spreading device. The occurrence of such a time lag reduces the device treatment capability. Further, because the time lag is changed depending on the width of the cloth, the standby time is also changed and control becomes complicated.
  • the cloth when the cloth is delivered from the spreading clamps onto the conveyor, the cloth is sucked onto a conveyor belt by a suction force from a state where the cloth is hanged from the clamps while being held at both the corner regions thereof. Therefore, the hanging cloth comes into a slacked state at its upper side portion due to the gravity imposed on the cloth itself and the suction force, and is moved onto the conveyor from such a slacked state. This often raises the problem that the upper side portion of the cloth is disordered and the upper side of the cloth is not straightly positioned on the conveyor.
  • Patent Document 2 a device for solving the problem of the time lag by employing a carrying device provided with a suction box which has a large number of suction small holes formed in an upper surface of the suction box, and for solving the problem of slacking of the cloth with the provision of a vacuum belt.
  • Patent Documents 3 to 5 Further methods and devices for spreading and carrying cloth are shown in Patent Documents 3 to 5.
  • the inventor intends to solve the problem of improving the treatment performance and the quality of the device proposed in Patent Document 2 so as to overcome its drawbacks.
  • the first drawback is that because receiving-side chucks are used to perform not only a step of fetching the cloth, but also a step of spreading the cloth, the cloth cannot be received from other inserting-side chucks until the spreading step is completed, and therefore a longer waiting time is needed.
  • the second drawback is that when the bottom of the cloth is sucked to supply the spread cloth in a state free from wrinkles to the carrying device, the upper side portion of the spread cloth comes down by the sucking action and gets out of the shape, thus resulting in a risk of deterioration of quality.
  • the third drawback is a risk that if the cloth is not sufficiently sucked by the carrying device when it is delivered from the spreading device to the carrying device, the cloth is sometimes dislocated and is dropped in the worst case. It is conceivable to overcome this drawback by providing a device for retaining and fixing the upper side portion of the cloth after spreading it.
  • a solution requires receiving-side chucks to receive the cloth in a position opposed to the plurality of inserting-side chucks, there is a difficulty in ensuring a space for installation of the retaining and fixing device.
  • the fourth drawback is a risk that when the cloth is transferred from the delivery device to the carrying device, the upper side portion of the cloth is not completely transferred and is turned over if the difference speed between the delivery device and the carrying device is not sufficient.
  • An object of the present invention is to overcome the above-described drawbacks and to provide a device and a method for spreading and carrying cloth with higher treatment performance and higher quality. Means for achieving the object
  • a device for spreading and carrying cloth comprises an inserting device carrying the cloth upward to a position higher than the height of a worker while grasping the cloth at both corner regions on one side thereof; a transverse chuck receiving the cloth from the inserting device and moving the cloth to a center position of a device frame along a first rail disposed to lie in the right-to-left direction; a delivery device receiving the cloth from the transverse chuck and delivering the cloth to a spreading device; the spreading device disposed at the center position of the device frame, receiving the cloth from the delivery device, and laterally spreading the cloth along a second rail disposed to lie in the right-to-left direction; an air suction device disposed substantially below the spreading device and spreading the laterally spread cloth in the vertical direction; a horizontally moving device receiving the cloth from the spreading device and delivering the cloth to a carrying device; and the carrying device receiving the cloth from the horizontally moving device and carrying the cloth to a next
  • the inserting device comprises a inserting chuck having a pair of grasping portions, and an ascending/descending slide cylinder capable of carrying the cloth upward to a position higher than the height of a worker.
  • the grasping portions of the inserting chuck are each constituted by a pair of spring-biased clips.
  • the cloth is inserted into the inserting device such that one pair of grippers of the inserting chuck holds one corner region of the cloth in a state where the cloth is stretched in a certain width, and the other pair of grippers of the inserting chuck holds the other corner region of the cloth on one same side thereof as the one corner region in a state where the cloth is stretched in a certain width.
  • the inserting device is provided in plural to increase the treatment capability.
  • the upper side portion of the cloth in an area used for such relayed delivery is required to be stretched by each pair of chucks. This is because, unless the delivery of the cloth is performed with the corner regions of the cloth kept in a stretched state, there is a risk that the cloth is delivered in a skewed state.
  • the width of the cloth stretched by the chuck on the delivered side is reduced when the cloth is delivered from one chuck to another chuck, the width of each stretched corner region grasped by the inserting chuck is required to be designed to have such a size as ensuring that a sufficient width of the stretched corner region is given to the next chuck until reaching the final chuck.
  • the transverse chuck is movable to the right and the left along the first rail disposed to lie in the right-to-left direction of the device frame.
  • the transverse chuck is moved to a position opposed to the inserting device for receiving the cloth from the inserting chuck, and then carries the received cloth to a center position in the device frame.
  • the transverse chuck has a pair of grasping portions which are disposed respectively at opposite corner regions on a lower side of the transverse chuck and are each constituted by a pair of clips.
  • the grasping portions of the transverse chuck in each pair are spaced at a smaller width than each pair of the grasping portions of the inserting chuck such that, at the delivery of the cloth, the pair of the grasping portions of the transverse chuck come into between the corresponding pair of the grasping portions of the inserting chuck in a parallel relation.
  • the chuck on the receiving side serves to perform not only the receiving step, but also the spreading step.
  • the transverse chuck serves to perform only the receiving step, thus enabling the receiving step and the spreading step to be performed in parallel.
  • the reason why four clips in total are disposed in the grasping portions of the transverse chuck is in enabling the opposite corner regions of the cloth to be kept in the stretched state when the cloth is delivered to the center chucks.
  • the provision of the four clips in total has another advantage that the cloth is hard to shift out of place even when heavy cloth is laterally moved at a high speed.
  • the delivery device is positioned in the central area of the device frame and delivers the cloth held by the transverse chuck to the spreading chucks.
  • the delivery device comprises a pair of arms pivotally mounted to the device frame, inner center chucks and outer center chucks disposed at fore ends of the arms, a pair of center chuck swinging cylinders for swinging and moving the arms from positions opposed to the transverse chuck to positions opposed to the spreading chucks, center chuck actuating cylinders for opening and closing the respective center chucks, and center chuck spacing cylinders for adjusting the degrees of respective openings of the inner center chucks and the outer center chucks.
  • the inner center chucks generate stronger grasping forces and have larger-sized grasping claws than the outer center chucks.
  • the outer center chucks grasp the cloth at its corner regions and stretch the opposite corner regions of the cloth over a certain width in cooperation with the inner center chucks.
  • the grasping forces of the outer center chucks are preferably set to be weaker than those of the inner center chucks.
  • the grasping claws of the outer center chucks are preferably formed to be smaller than those of the inner center chucks.
  • the grasped positions of the cloth are gradually shifted inward.
  • the corner regions of the cloth are grasped by spacing the outer center chucks more away from each other, the cloth can be delivered to the spreading chucks while being grasped at the corner regions thereof so that the cloth is fully spread from one end to the other end.
  • the transverse chuck can be moved to a position opposed to another inserting device without waiting for the end of the spreading step of the cloth.
  • the spreading device comprises the spreading chucks in the form of a pair of grippers provided on the second rail which is arranged to lie in the right-to-left direction of the device frame, spreading chuck actuating cylinders for opening and closing the spreading chucks, and right and left spreading chuck sliding motors for moving the spreading chucks to the right and the left.
  • the upper end fixing bars are positioned just below the spreading device at the same height as the horizontally moving member in an opposed relation and have a gap formed in a central area between the bars, which allows passage of the cloth through it.
  • the spreading device just performs a very simple operation of receiving the cloth and spreading it, complicated operation control is not required. Further, the step of receiving the cloth by the transverse chuck can be performed in parallel to the spreading step.
  • the air suction device is installed below the spreading device and comprises a vacuum box having a suction port formed at a top thereof, an air suction fan for sucking air in the vacuum box, and leading rollers disposed on the front side near the suction port of the vacuum box (above a front wall).
  • the leading rollers are disposed on the front side near the suction port of the vacuum box (above a front wall).
  • the air suction fan is operated when the upper side portion of the cloth is fixedly held by the upper end fixing bars and the horizontally moving member, the upper end fixing bars being positioned at the height in an opposed relation to the horizontally moving member just below the spreading chucks.
  • the leading rollers are rotated in a feed direction at a high speed by leading roller motors such that a lower portion of the cloth is sucked into the vacuum box and the cloth is spread in the vertical direction.
  • the upper side portion of the cloth is fixedly held when the cloth is sucked into the vacuum box, it is possible to eliminate the problem that the upper side portion of the cloth is excessively withdrawn downward by the suction and is deformed from the properly spread shape.
  • the horizontally moving device preferably comprises the horizontally moving member moving above a transfer conveyor toward and away from the upper end fixing bars, a vacuum motor causing a suction force to act in a suction box formed on the horizontally moving member, a horizontally moving member cylinder for horizontally moving the horizontally moving member, and right and left air blowers disposed adjacent respectively to the right and left upper end fixing bars and having a gap formed in a central area between the air blowers, which allows passage of the cloth grasped by the center chucks through it.
  • the horizontally moving member has a length in the right-to-left direction corresponding to a maximum width of cloths to be treated, and the suction box having a large number of small holes is formed on an upper surface of the horizontally moving member at a front end portion thereof.
  • the suction box having a large number of small holes is formed on an upper surface of the horizontally moving member at a front end portion thereof.
  • the carrying device preferably comprises the transfer conveyor constituted by a perforated belt having a large number of small holes formed therein, a peeling-off shaft disposed in front of the transfer conveyor and rotating at a speed lower than a horizontally moving speed of the horizontally moving member and a rotating speed of the transfer conveyor, an air suction passage provided below the transfer conveyor, and a discharge conveyor disposed in continuation with the transfer conveyor. A trailing end portion of the discharge conveyor is continued to a inserting conveyor on the press side.
  • the air suction passage is communicated with the vacuum box, and the switching damper enables a suction force to selectively act in any of the vacuum box and the air suction passage.
  • a negative pressure is caused to generate in the air suction passage so that the cloth having been supplied onto the transfer conveyor is held under the suction and is surely transported by the transfer conveyor.
  • the rotating speed of the peeling-off shaft By setting the rotating speed of the peeling-off shaft to be slower than the moving speed of the horizontally moving member, a sufficient frictional force is generated due to the speed difference between the moving speed of the horizontally moving member and the rotating speed of the peeling-off shaft. Therefore, the upper side portion of the cloth can be smoothly peeled off and transferred onto the carrying device without being turned over.
  • the rotating speed of the peeling-off shaft is set to be slower than the rotating speed of the transfer conveyor, a weak frictional force acts on the cloth when the cloth is transferred from the peeling-off shaft onto the transfer conveyor, and the cloth is carried in a state of being properly spread in the lengthwise direction. As a result, the cloth is hard to wrinkle and high quality is ensured.
  • the receiving-side chuck in the known device shown in Patent Document 2 is separated into the transverse chuck and the spreading chucks, the receiving step by the transverse chuck and the spreading step by the spreading chucks can be performed in parallel. Hence the treatment efficiency can be increased.
  • the cloth can be surely grasped at the corner regions so that the cloth is fully spread from one end to the other end.
  • the cloth since the cloth is fixedly held by the upper end fixing bars, the cloth can be avoided from displacing downward at the time when it is delivered from the spreading device to the horizontally moving device.
  • the peeling-off shaft is disposed in front of the transfer conveyor, a sufficient speed difference can be ensured between the horizontally moving member and the transfer conveyor. As a result, the upper side portion of the cloth can be avoided from turning over at the time when the cloth is delivered from the horizontally moving member to the transfer conveyor.
  • front-to-back direction means a direction in which cloth as a treatment target is carried
  • right-to-left direction means a direction perpendicular to the carrying direction of the cloth.
  • a device for spreading and carrying cloth comprises, as shown in Figs. 1 and 2 , an inserting device carrying the cloth upward to a position higher than the height of a worker while grasping the cloth at both corner regions on one side thereof, a transverse chuck 3 receiving the cloth from the inserting device and moving the received cloth to a center position in a device frame along a first rail 21 disposed to lie in the right-to-left direction, a delivery device receiving the cloth from the transverse chuck 3 and delivering the cloth to a spreading device, the spreading device receiving the cloth from the delivery device at a center position of the device frame and spreading the cloth, an air suction device installed substantially just below the spreading device, a horizontally moving device receiving the spread cloth from the spreading device and delivering the cloth to a carrying device, and the carrying device receiving the cloth held by a horizontally moving member and carrying the cloth toward a press.
  • the inserting device comprises an inserting chuck 1 having a pair of grasping portions, and an ascending/descending slide cylinder 2 capable of carrying the cloth upward to a position higher than the height of a worker.
  • the grasping portions of the inserting chuck 1 are constituted by respective pairs of clips 1a - 1d which are spring biased.
  • the cloth is inserted into the inserting device such that one pair of grippers 1 a, 1 b of the inserting chuck 1 holds one corner region of the cloth in a state where the cloth is stretched in a certain width, and the other pair of grippers 1 c, 1 d of the inserting chuck 1 holds the other corner region of the cloth on one same side thereof as the one corner region in a state where the cloth is stretched in a certain width.
  • a release plate 52 is disposed above the ascending/descending slide cylinder 2 such that the release plate 52 comes into abutment against the clips 1a - 1d to release the cloth at the time when the cloth is delivered.
  • the cloth spreading and carrying device In the cloth spreading and carrying device according to the present invention, four inserting devices are disposed at the front side, thus allowing four workers to perform the operation of inserting the cloth in front of the respective inserting devices.
  • the ascending/descending slide cylinder 2 When each worker depresses an up-button disposed on the inserting device (or in an automatic mode), the ascending/descending slide cylinder 2 is operated to raise the inserting chuck 1. While one inserting chuck 1 is operated to deliver the cloth, the other inserting chucks 1 are kept on standby at positions lower than the height at which the cloth is delivered.
  • the transverse chuck 3 is movable to the right and the left along the first rail 21 disposed to lie in the right-to-left direction of the device frame.
  • the transverse chuck 3 is moved to a position opposed to the inserting device for receiving the cloth from the inserting chuck 1, and then carries the received cloth to a center position in the device frame.
  • the transverse chuck 3 has a pair of grasping portions which are disposed respectively at opposite corner regions on a lower side of the transverse chuck 3 and are each constituted by a pair of clips.
  • the grasping portions of the transverse chuck 3 in each pair are spaced at a smaller width than each pair of the grasping portions of the inserting chuck 1 such that, at the delivery of the cloth, the pairs of the grasping portions (clips 3a - 3d) of the transverse chuck 3 come into between the corresponding pairs of the grasping portions (clips 1a - 1 d) of the inserting chuck 1 in a parallel relation.
  • An opening/closing bar 51 operated by a transverse chuck opening/closing cylinder 29 is disposed in each of upper portions of the ascending/descending slide cylinders 2 and a central area of the device frame, and the grasping portions of the transverse chuck 3 can be opened and closed by operating the opening/closing bar 51.
  • the delivery device is positioned in the central area of the device frame and delivers the cloth held by the transverse chuck 3 to spreading chucks 8.
  • the delivery device comprises a pair of arms pivotally mounted to the device frame, inner center chucks 5 and outer center chucks 6 disposed at fore ends of the arms, a pair of center chuck swinging cylinders 7 for swinging and moving the arms from positions opposed to the transverse chuck 3 to positions opposed to the spreading chucks 8, center chuck actuating cylinders 26 for opening and closing the respective center chucks, and center chuck spacing cylinders (not shown) for adjusting the degrees of respective openings of the inner center chucks 5 and the outer center chucks 6.
  • the inner center chucks 5 generate stronger grasping forces and have larger-sized grasping claws than the outer center chucks 6.
  • the inner center chucks 5 and the outer center chucks 6 can be opened and closed by the center chuck actuating cylinders 26.
  • the transverse chuck 3 When the transverse chuck 3 is laterally moved to a position opposed to the center chucks 5, 6, the outer center chucks 5, 6 are swung by the center chuck swinging cylinders 7 toward the front side closer to the worker and center chuck actuating cylinders are operated to grasp the cloth. Further, the grasping portions of the transverse chuck 3 are released by an opening/closing bar 51 which is operated by the transverse chuck opening/closing cylinder 29, whereby the cloth is delivered from the transverse chuck 3 to the center chucks 5, 6.
  • the center chucks 5, 6 Upon receiving the cloth, the center chucks 5, 6 are returned to the original swung position by the center chuck swinging cylinders 7, and the outer center chucks 6 are moved by the center chuck spacing cylinders to space from each other, thus bringing each of the opposite corner regions of the cloth into a stretched state over several centimeters. Then, the center chucks 5, 6 are further swung rearward by the center chuck swinging cylinders 7 such that the stretched opposite corner regions of the cloth are grasped by the spreading chucks 8 for the delivery of the cloth.
  • the spreading device comprises the spreading chucks 8 in the form of a pair of grippers provided on a second rail 23 which is arranged to lie in the right-to-left direction of the device frame, spreading chuck actuating cylinders 28 for opening and closing the spreading chucks 8, and right and left spreading chuck sliding motors 9 for moving the spreading chucks 8 to the right and the left.
  • the right and left spreading chucks 8 can be moved along the second rail 23 in a direction spacing away from each other or a direction coming closer to each other.
  • the spreading chucks 8 receive the cloth from the center chucks 5, 6 in the center position of the device frame and are moved along the second rail 23 in opposite directions, thereby spreading the cloth. More specifically, when the center chucks 5, 6 are moved to the positions opposed to the spreading chucks 8 while the right and left spreading chucks 8 are in a state close to each other, the spreading chucks 8 grasp the cloth with the operation of the spreading chuck actuating cylinders 28, and the center chucks 5, 6 are operated by the center chuck actuating cylinders 26 to release the cloth, whereby the cloth is delivered from the center chucks 5, 6 to the spreading chucks 8. Then, an upper side portion of the cloth can be spread by moving the spreading chucks 8 along the second rail 23 so as to space from each other in the right-to-left direction in the state of the spreading chucks 8 receiving the opposite corner regions of the cloth.
  • the air suction device is installed below the spreading device and comprises a vacuum box 24 having a suction port formed at a top thereof, an air suction fan 16 for sucking air in the vacuum box 24, and leading rollers 33 disposed on the front side near the suction port of the vacuum box 24 (above a front wall).
  • the air suction fan 16 is operated when the upper side portion of the cloth is fixedly held by upper end fixing bars 12 and a horizontally moving member 11, the upper end fixing bars 12 being positioned at a height in an opposed relation to the horizontally moving device just below the spreading device and having a gap between them, which allows passage of the cloth through it.
  • the leading rollers 33 are rotated in a feed direction at a high speed by leading roller motors 13 such that a lower portion of the cloth is sucked into the vacuum box 24 and the cloth is spread in the vertical direction.
  • the suction of the cloth into the vacuum box 24 is performed for a very short time immediately after the upper side portion of the cloth has been stretched by the spreading chucks. For that operation, a passage between the air suction fan 16 and the vacuum box 24 is selectively communicated with each other or cut off by a vacuum switching damper 15.
  • the horizontally moving device comprises a horizontally moving member 11 moving above a transfer conveyor 18 toward and away from the upper end fixing bars 12, a vacuum motor 17 causing a suction force to act in a suction box formed on the horizontally moving member 11, a horizontally moving member cylinder 32 for horizontally moving the horizontally moving member 11, right and left upper end fixing bars 12 positioned just below the spreading chucks 8 at the same height as the horizontally moving member 11 in an opposed relation and having a gap formed in a central area between the bars 12, which allows passage of the cloth grasped by the center chucks 5, 6 through it, and right and left air blowers 14 disposed adjacent respectively to the right and left upper end fixing bars 12 and having a gap formed in a central area between the air blowers 14, which allows passage of the cloth grasped by the center chucks 5, 6 through it.
  • the horizontally moving member 11 has a length in the right- to-left direction corresponding to a maximum width of cloths to be treated, and the suction box having a large number of small holes is formed on an upper surface of the horizontally moving member 11 at a front end portion thereof.
  • the suction box having a large number of small holes is formed on an upper surface of the horizontally moving member 11 at a front end portion thereof.
  • the cloth is delivered from the spreading chucks 8 to the horizontally moving member 11 by contracting the horizontally moving member cylinder 32 to hold the cloth between the upper end fixing bars 12 and the horizontally moving member 11, by releasing the spreading chucks 8, and by blowing air to the upper side portion of the cloth from the air blowers 14 such that the upper side portion of the cloth is transferred onto the horizontally moving member 11.
  • the carrying device comprises the transfer conveyor 18 constituted by a perforated belt having a large number of small holes formed therein, a peeling-off shaft 19 disposed in front of the transfer conveyor and rotating at a speed lower than a horizontally moving speed of the horizontally moving member 11 and a rotating speed of the transfer conveyor 18, an air suction passage 25 provided below the transfer conveyor 18, and a discharge conveyor 34 disposed in continuation with the transfer conveyor 18. A trailing end portion of the discharge conveyor 34 is continued to an inserting conveyor (not shown) on the press side.
  • the air suction passage 25 is communicated with the vacuum box 24, and the switching damper 15 enables a suction force to selectively act in any of the vacuum box 24 and the air suction passage 25.
  • a negative pressure is caused to generate in the air suction passage 25 so that the cloth having been supplied onto the transfer conveyor 18 is held under the suction and is surely transported by the transfer conveyor 18.
  • the switching damper 15 When the cloth is delivered from the horizontally moving member 11 to the transfer conveyor 18, the switching damper 15 is operated such that the suction force is changed over to act in the air suction passage 25 instead of the vacuum box 24.
  • the horizontally moving member 11 When the horizontally moving member 11 is moved rearward, the cloth first comes into contact with the peeling-off shaft 19. However, because the moving speed of the horizontally moving member 11 is higher than the rotating speed of the peeling-off shaft 19, there occurs a frictional force acting on a contact surface between the peeling-off shaft 19 and the cloth "a". Further, because the horizontally moving member 11 is moved rearward, the frictional force between the peeling-off shaft 19 and the cloth becomes larger than the suction force applied from the suction box formed on the horizontally moving member 11.
  • the upper side portion of the cloth is transferred from the horizontally moving member 11 onto an upper surface of the transfer conveyor 18 in a state where the upper side portion of the cloth is spread in the front-to-back direction. At that time, the upper side portion of the cloth comes into close contact with the upper surface of the transfer conveyor 18 by the action of the suction force applied from the air suction passage 25.
  • Fig. 3 shows the operation when the up-button disposed in the inserting device located at a second position counting from the left in the front view is depressed by the worker.
  • the inserting chuck 1 is ascended by the ascending/descending slide cylinder 2 while the cloth "a" is gripped by the grips 1a - 1d.
  • the transverse chuck 3 is horizontally moved by the transverse chuck sliding motor 4 to a position opposed to the inserting chuck 1 which is in the ascending step, and the transverse chuck 3 is held in a standby state where the clips 3a - 3d are opened.
  • the clips 3a, 3b are positioned between the clips 1 a, 1 b and the clips 3c, 3d are positioned between the clips 1c, 1 d, and the clips 1 a - 1d are released by coming into abutment against the release plate 52 which is in the ascended position.
  • the cloth is grasped by the clips 3a - 3d with the opening/closing bar 51 operated by the transverse chuck opening/closing cylinder 29.
  • the inserting chuck 1 is started to descend and the transverse chuck 3 is started to horizontally move toward the central area of the device frame after the lapse of a short time from the delivery.
  • Fig. 4 shows the operation when the cloth "a” is delivered from transverse chuck 3 to the delivery device.
  • the center chucks 5, 6 are swung to the front side closer to the worker by the center chuck swinging cylinders 7.
  • the center chuck actuating cylinders are operated to grasp the cloth and the grasping portions of the transverse chuck 3 are released by the opening/closing bar 51 which is operated by the transverse chuck opening/closing cylinder 29, whereby the cloth "a” is delivered from the transverse chuck 3 to the center chucks 5, 6.
  • the center chucks 5, 6 are swung for return to the original positions by the center chuck swinging cylinders 7.
  • the transverse chuck 3 having delivered the cloth is kept in a standby state in the central area of the device frame until the next cloth is started to ascend.
  • Fig. 5 shows the operation of a pre-step in which the cloth "a” is delivered from the delivery device to the spreading device.
  • the outer center chucks 6 are moved outward to further space from each other by the center chuck spacing cylinders such that each of the opposite corner regions of the cloth "a” is brought into a stretched state over several centimeters.
  • the outer center chucks 6 generate weaker grasping forces and have the smaller-sized grasping claws than the inner center chucks 5, the outer center chucks 6 stretch the opposite corner regions of the cloth while sliding on them.
  • the center chucks 5, 6 are further swung rearward by the center chuck swinging cylinders 7 such that the stretched opposite corner regions of the cloth "a” are grasped by the spreading chucks 8 for delivery of the cloth to the spreading chucks 8.
  • the center chucks 5, 6 are swung for return to the original positions by the center chuck swinging cylinders 7.
  • the transverse chuck 3 is moved to the position opposed to the relevant inserting chuck 1.
  • Figs. 6 and 7 show the operation when the cloth "a” is spread by the spreading device in the right-to-left direction.
  • the spreading chucks 8 having received the cloth “a” are moved to the right and the left more apart from each other by the spreading chuck sliding motors 9 in a synchronous relation, thus spreading the cloth "a” in the right-to-left direction.
  • the horizontally moving member 11 is started to move forward by the horizontally moving member cylinder 32.
  • the transverse chuck 3 receives the next cloth b from the inserting chuck 1 and is horizontally moved to the central area of the device frame.
  • Figs. 8 and 9 show the operation when the cloth “ a " is spread in the vertical direction and is delivered from the spreading device to the horizontally moving member 11. After the cloth “a” has been completely spread in the right-to-left direction, the cloth “a” is held between the front end portion of the horizontally moving member 11 and the upper end fixing bars 12. Simultaneously, the leading rollers 33 are rotated at a high speed and the switching damper 15 is changed over so as to act the suction force through the vacuum box 24. Therefore, the cloth “a” hanging from the spreading chucks 8 is sucked into the vacuum box 24 and is spread by the actions of a downward flow of air and the dead weight of the cloth.
  • the switching damper 15 is changed over again to stop the suction force applied through the vacuum box 24, whereby air is now blown toward the upper side portion of the cloth "a” from the air blowers 14.
  • the spreading chucks 8 are released, thus causing the upper side portion of the cloth “a” to be transferred onto the suction box on the horizontally moving member 11 with the suction force acting in the suction box by the operation of the vacuum motor 17.
  • the next cloth b is delivered from the transverse chuck 3 to the delivery device.
  • the center chucks 5, 6 having received the cloth b are swung for return to the original positions by the center chuck swinging cylinders 7 and are kept in a standby state until the spreading chucks 8 are released.
  • Figs. 10 and 11 show the operation when the cloth "a” is delivered from the horizontally moving member 11 to the carrying device.
  • the cloth " a” first comes into contact with the peeling-off shaft 19. Because the rotating speed of the peeling-off shaft 19 is sufficiently slower than that of the horizontally moving member 11, there occurs a frictional force acting between them.
  • the horizontally moving member 11 is moved rearward, the frictional force is further increased so that the upper side portion of the cloth "a” is moved away from the suction box.
  • the switching damper 15 is already in the changed-over state and the suction force applied from the air suction fan 16 acts in the air suction passage 25.
  • the cloth “ a “' is transferred onto the upper surface of the transfer conveyor 18 due to both the sucking action through the air suction passage 25 and a natural drop of the cloth “a” caused by the dead weight thereof. Then, with the rotation of the transfer conveyor 18, the cloth “a” is carried onto the discharge conveyor 34 and is continuously carried onto the inserting conveyor (not shown) on the subsequent press side.
  • the cloth b is delivered from the center chucks 5, 6 to the spreading device and is subjected to the spreading step by the spreading device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (11)

  1. Verfahren zum Ausbreiten und Tragen von Tuch (a, b), wobei das Verfahren die folgenden Schritte aufweist:
    Tragen des Tuchs (a, b) nach oben durch eine Einsetzvorrichtung, während sie das Tuch (a, b) an beiden Eckbereichen auf einer seiner Seiten greift;
    Aufnehmen des Tuchs (a, b) von der Einsetzvorrichtung durch eine Querspanneinrichtung (3) und Tragen des Tuchs (a, b) zu einer Mittelposition entlang einer ersten Schiene (21), die angeordnet ist, um in der Rechts-Linksrichtung zu liegen;
    Aufnehmen des Tuchs (a, b) von der Querspanneinrichtung (3) durch eine Liefervorrichtung und Liefern des Tuchs (a, b) an eine Ausbreitungsvorrichtung;
    Querausbreiten des Tuchs (a, b), das von der Liefervorrichtung durch die Ausbreitungsvorrichtung aufgenommen wird, die aus einem Paar von Spannelementen (8) ausgebildet ist, das entlang einer zweiten Schiene (23) bewegbar ist, die in der Rechts-/Linksrichtung liegt, indem das Paar von Spanneinrichtungen (8) voneinander weg getrennt wird;
    Ausbreiten des querausgebreiteten Stoffs (a, b) in der vertikalen Richtung durch eine Luftsaugvorrichtung;
    Aufnehmen des Tuchs (a, b) von der Ausbreitungsvorrichtung, indem die Vorrichtung horizontal bewegt wird, und Liefern des Tuchs (a, b) an eine Tragevorrichtung; und
    Tragen des Tuchs (a, b) zu einem nächsten Vorgang durch die Tragevorrichtung.
  2. Verfahren zum Ausbreiten und Tragen von Tuch (a, b) nach Anspruch 1, wobei die sich horizontal bewegende Vorrichtung einen hängenden Abschnitt des Tuchs (a, b) festhält, durch Zusammenwirken mit einer Befestigungsstange (12) an einem oberen Ende, die in einer vorwärtsbewegten Position gehalten ist, und das Tuch (a, b) von der Ausbreitungsvorrichtung aufnimmt, während sie Luft zu einem oberen Seitenabschnitt des Tuchs (a, b) bläst.
  3. Verfahren zum Ausbreiten und Tragen von Tuch (a, b) nach Anspruch 2, wobei die Luftsaugvorrichtung das Tuch (a, b) in der vertikalen Richtung ausbreitet, wenn die sich horizontal bewegende Vorrichtung den hängenden Abschnitt des Tuchs (a, b) festhält.
  4. Verfahren zum Ausbreiten und Tragen von Tuch (a, b) nach einem der Ansprüche 1 bis 3, wobei die Liefervorrichtung ein Paar von Greifabschnitten (3a-3d) hat, wobei jede eine äußere Spanneinrichtung (3a, 3d) und eine innere Spanneinrichtung (3b, 3c) aufweist, wobei die Greifabschnitte (3a-3d) das Tuch (a, b) von der Querspanneinrichtung (3) aufnehmen, und wobei die Liefervorrichtung das Tuch (a, b) an die Ausbreitungsvorrichtung liefert, nachdem sie jede äußere Spanneinrichtung (3a, 3d) nach außen schwingt, um jeden der beiden Eckbereiche des Tuchs (a, b) über eine bestimmte Breite zu dehnen.
  5. Verfahren zum Ausbreiten und Tragen von Tuch (a, b) nach einem der Ansprüche 1 bis 4, wobei die Tragevorrichtung eine Drehgeschwindigkeit an einer Position hat, an der das Tuch (a, b) zuerst in die Tragevorrichtung kommt, die niedriger ist als eine Drehgeschwindigkeit an einer Position, an der das Tuch (a, b) getragen wird.
  6. Verfahren zum Ausbreiten und Tragen von Tuch (a, b) nach einem der Ansprüche 1 bis 5, wobei nach einem Liefern des Tuchs (a, b) an die Liefervorrichtung, die Querspanneinrichtung (3) unverzüglich zu einer Position bewegt wird, die einer anderen Einsetzvorrichtung gegenüberliegt.
  7. Vorrichtung zum Ausbreiten und Tragen von Tuch (a, b), wobei die Vorrichtung aufweist:
    eine Einsetzvorrichtung, zum Tragen des Tuchs (a, b) nach oben, während sie das Tuch (a, b) an beiden Eckbereichen auf einer seiner Seiten greift;
    eine Querspanneinrichtung (3), zum Bewegen des Tuchs (a, b), das von der Einsetzvorrichtung aufgenommen wird, zu einer Mittelposition entlang einer ersten Schiene (21), die angeordnet ist, um in der Rechts-/Linksrichtung zu liegen;
    eine Liefervorrichtung, zum Aufnehmen des Tuchs (a, b) von der Querspanneinrichtung (3), und zum Liefern des Tuchs an eine Ausbreitungsvorrichtung;
    die Ausbreitungsvorrichtung, die aus einem Paar von Spanneinrichtungen (8) ausgebildet ist, das entlang einer zweiten Schiene (23) bewegbar ist, die in der Rechts-/Linksrichtung angeordnet ist, zum Aufnehmen des Tuchs (a, b) von der Liefervorrichtung, und zum Trennen des Paars von Spanneinrichtungen (8) weg voneinander, um das Tuch (a, b) quer auszudehnen;
    eine Luftsaugvorrichtung, zum Ausbreiten des quer ausgebreiteten Tuchs (a, b) in der vertikalen Richtung;
    eine sich horizontal bewegende Vorrichtung, zum Aufnehmen des Tuchs (a, b) von der Ausbreitungsvorrichtung, und zum Liefern des Tuchs (a, b) an eine Tragevorrichtung; und
    die Tragevorrichtung, zum Aufnehmen des Tuchs (a, b) von der sich horizontal bewegenden Vorrichtung, und zum Tragen des Tuchs (a, b) zu einem nächsten Vorgang.
  8. Vorrichtung zum Ausbreiten und Tragen von Tuch (a, b) nach Anspruch 7, wobei die Liefervorrichtung ein Paar von Greifabschnitten (3a-3d) hat, wobei jede eine äußere Spanneinrichtung (3a, 3d) und eine innere Spanneinrichtung (3b, 3c) aufweist, wobei die Greifabschnitte (3a-3d) dazu dienen, das Tuch (a, b) zu greifen, und die Liefervorrichtung eingerichtet ist, jede äußere Spanneinrichtung (3a, 3d) nach außen zu schwingen, um jeden der beiden Eckbereiche des Tuchs (a, b) über eine bestimmte Breite zu dehnen.
  9. Vorrichtung zum Ausbreiten und Tragen von Tuch (a, b) nach Anspruch 7 oder 8, wobei die sich horizontal bewegende Vorrichtung ein sich horizontal bewegendes Element (11) aufweist, das eingerichtet ist, sich in Richtung und weg von einer rechten und linken Befestigungsstange (12) an einem oberen Ende zu bewegen, die unter der Ausbreitungsvorrichtung angeordnet sind, einen Vakuummotor (17), zum Bewirken einer Saugkraft, die in einem Saugkasten wirkt, der an dem sich horizontal bewegenden Element (11) ausgebildet ist, einen Zylinder (32) des sich horizontal bewegenden Elements, zum horizontalen Bewegen des sich horizontal bewegenden Elements (11), rechte und linke Luftgebläse (14), mit einem in einem Mittelbereich zwischen den Luftgebläsen (14) ausgebildeten Spalt, der ein Passieren des Tuchs (a, b) durch diese ermöglicht, und
    wobei Luft auf einen oberen Seitenabschnitt des Tuchs (a, b) aus den Luftgebläsen (14) in einem Zustand geblasen wird, in dem das Tuch (a, b) zwischen den Befestigungsstangen (12) an einem oberen Ende und dem sich horizontal bewegenden Element (11) gehalten ist.
  10. Vorrichtung zum Ausbreiten und Tragen von Tuch (a, b) nach einem der Ansprüche 7 bis 9, wobei die Luftsaugvorrichtung einen Vakuumkasten (24), der unter der Ausbreitungsvorrichtung angeordnet ist und an dessen Oberteil eine Saugöffnung ausgebildet ist, einen Luftsaugventilator (16), zum Saugen von Luft in den Vakuumkasten (24), sowie Führungsrollen (33) aufweist, die an der vorderen Seite in der Nähe der Saugöffnung des Vakuumkastens (24) angeordnet sind, und
    wobei die Luftsaugvorrichtung eingerichtet ist, das Tuch (a, b) in der vertikalen Richtung auszubreiten, während der obere Seitenabschnitt des Tuchs (a, b) zwischen der rechten und linken Befestigungsstange (12) an einem oberen Ende gehalten ist, die unterhalb der Ausbreitungsvorrichtung und des sich horizontal bewegenden Elements (11) angeordnet sind.
  11. Vorrichtung zum Ausbreiten und Tragen von Tuch (a, b) gemäß einem der Ansprüche 7 bis 10, wobei die Tragevorrichtung einen Transportförderer (18), der drehbar ist, um das Tuch (a, b) zu dem nächsten Vorgang zu tragen, sowie eine Ablösewelle (19) aufweist, die vor dem Transportförderer (18) angeordnet ist, und
    eine Drehzahl der Tragevorrichtung festgelegt ist, um niedriger zu sein als eine horizontale Bewegungsgeschwindigkeit des sich horizontal bewegenden Elements (11) und eine Drehzahl des Transportförderers (18).
EP05793181.8A 2004-11-25 2005-10-13 Verfahren und vorrichtung zum ausbreiten und tragen von tuch Expired - Fee Related EP1820894B1 (de)

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JP2004341315A JP3781376B1 (ja) 2004-11-25 2004-11-25 布類展張搬送方法および装置
PCT/JP2005/018844 WO2006057112A1 (ja) 2004-11-25 2005-10-13 布類展張搬送方法および装置

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JP4762206B2 (ja) * 2007-07-10 2011-08-31 株式会社プレックス 布類展張搬送機
JP5216264B2 (ja) * 2007-07-19 2013-06-19 株式会社プレックス 布類展張搬送機
DK176722B1 (da) 2007-12-17 2009-04-27 Jensen Denmark As Fremgangsmode til overf ring af et t jstykke og vaskerimaskine til ud velse af fremgangsmoden
JP4800370B2 (ja) * 2008-11-10 2011-10-26 洋左右 前嶋 布類投入機における布類の受け渡し装置
DE102009058637A1 (de) * 2009-12-16 2011-06-22 Herbert Kannegiesser GmbH, 32602 Verfahren und Vorrichtung zum Zuführen eines Wäschestücks zu einer Mangel oder dergleichen
JP5693354B2 (ja) * 2010-11-22 2015-04-01 株式会社プレックス 衣類投入機
DE102012004463A1 (de) * 2012-03-08 2013-09-12 Herbert Kannegiesser Gmbh Vorrichtung und Verfahren zum Zuführen von Wäschestücken zu einer Mangel oder dergleichen
JP5908854B2 (ja) * 2013-02-15 2016-04-26 東都フォルダー工業株式会社 衣類整形装置における皺の除去方法及びエアノズル
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CN108699759B (zh) * 2016-03-11 2020-10-16 简森丹麦有限公司 用于接收、展开/伸展和平整的设备
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DK1820894T3 (en) 2017-10-09
JP3781376B1 (ja) 2006-05-31
EP1820894A4 (de) 2016-04-27
WO2006057112A1 (ja) 2006-06-01
JP2006149491A (ja) 2006-06-15
EP1820894A1 (de) 2007-08-22
KR20070085078A (ko) 2007-08-27
KR101233225B1 (ko) 2013-02-22

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