JP5342339B2 - Cloth reversing device - Google Patents

Description

  The present invention relates to a cloth reversing device for reversing a cloth conveyed from a first conveyor onto a second conveyor.

  In the so-called linen supply industry, where towels, sheets, and other fabrics are collected from customers, washed, ironed, finished, and delivered, for example, the front and back of the fabrics are reversed to detect stains and tears. Need to do. In addition to the inspection, it is necessary to invert the clothes when selecting either the chest folding that folds the chest of clothing such as a gown or the back folding that folds the chest downward.

  As an invention for detecting dirt, tears, etc., there is an invention relating to a defective cloth detection device disclosed in, for example, Japanese Patent Application Laid-Open No. 2004-177143. The conveyance part is provided in the conveyance conveyor. In the case of this configuration, an upper and lower conveyor is required as the back-facing conveyance unit, and a conveyor that wraps the lower part of the conveyor must be provided, and the conveyors must be combined in a very complicated manner. Further, in the invention of the double-sided inspection apparatus disclosed in Japanese Patent Application Laid-Open No. 2005-325489, in order to receive a work from the front conveyor and turn it over, a rear conveyor that partially overlaps the front conveyor and rotates in the reverse direction is provided. However, when such a configuration is adopted, there arises a problem that the conveyance interval must be set wide.

  That is, conventionally, the leading end portion a of the workpiece w1 conveyed from the front conveyor is pushed up by the rear conveyor b using the inclined guide c and picked up by the holding member d (FIG. 8A), while the tail end portion z of the workpiece is in between. Is advanced on the rear conveyor b (FIG. 8B), the tip a and the tail end z are exchanged (FIG. 8C), and then the holding of the workpiece is released and the front and back are reversed. For this reason, unless the tip a and the tail end z of the preceding workpiece w1 are switched, the subsequent workpiece w2 cannot be reversed (FIG. 8D). Therefore, one workpiece is inserted between the preceding and succeeding workpieces. It must be transported with a spacing equal to the length. This becomes a big bottleneck for improving the working speed.

JP 2004-177143 A JP 2005-325489 A

  The present invention has been made paying attention to the above points, and the problem is that the work for reversing the next cloth can be executed even after the leading edge and the trailing edge of the cloth are not switched. In this way, the work speed is improved. Another object of the present invention is to provide a cloth reversing device that can be transported without maintaining an interval equal to the length of one piece of cloth.

  In order to solve the above-mentioned problems, the present invention is an apparatus for placing cloths conveyed by the first conveyor on the second conveyor so as to be placed between the end of the first conveyor and the end of the second conveyor. More than the 1st conveyor in order to place the interval and to arrange the second conveyor at a low position, and to temporarily store the cloth with the tip part lowered from the end of the first conveyor. A stock conveyor that conveys the fabric at a low speed is disposed below the first and second conveyors, and the tail end portion of the fabric that is lowered to the end of the first conveyor is held and passed to the second conveyor. Means is provided in which the mechanism is arranged in front of the first conveyor and in the upper part of the second conveyor.

  It is understood that the target cloths in the cloth reversing device of the present invention are usually large and small towels or sheets, but are not limited to these and have similar forms. If so, it can be targeted. The present invention uses two conveyors to change the leading end and tail end of the fabric while transferring the fabric from one to the other. Prior art using this method is known as described above. However, the present invention is characterized in that, in the tip-to-tail replacement method, the work interval is reduced as much as possible to improve work efficiency.

  In this invention, it arrange | positions so that a space | interval may be provided between the edge part of a 1st conveyor, and the edge part of a 2nd conveyor, and a 2nd conveyor may become a low position. A space is provided between the end portion of the first conveyor and the end portion of the second conveyor so as to be a work space for reversing the front and back of the cloth. Moreover, in order to arrange | position the delivery mechanism mentioned later on the 2nd conveyor, it arrange | positions so that the direction of a 2nd conveyor may become a position lower than the height of a 1st conveyor.

  The first and second conveyors are used as stock conveyors for transporting fabrics at a lower speed than the first conveyor for temporarily storing the fabrics that come down from the end of the first conveyor so that the tip ends. Place at the bottom of. The stock conveyor moves in the same direction at a lower speed than the conveying speed of the first conveyor to receive from the tip part of the cloth that hangs down from the first conveyor and temporarily stocks it. is there.

  A delivery mechanism that holds the tail end portion of the cloth and passes over the second conveyor, which is lowered so as to hang down from the end of the first conveyor, is disposed in front of the first conveyor and at the top of the second conveyor. . Necessary matters for the delivery mechanism are to hold the tail end portion of the cloth, and to release the hold of the tail end portion and to pass it on the second conveyor. As a means for holding the tail end portion of the cloth, for example, a clamp that picks up the cloth or a turn roll that passes the cloth can be applied. It is possible to hold and release the hold, and if it is a turn roll, the cloth can be held and released by holding the tail end part on the roll and moving the tail end part by moving it. It is. By arranging the delivery mechanism in front of the first conveyor, it is easy to receive the cloth carried out from the first conveyor, and by arranging it at the upper part of the second conveyor, the tail end portion of the cloth is changed to the first conveyor. 2 It is easy to drop onto a conveyor.

  The delivery mechanism has a revolving device comprising a sprocket and a chain, and holding means provided on the chain for locking and holding the cloth at the tail end portion, and the holding means is provided in front of the first conveyor. It is possible to take a configuration comprising a plurality of positions that circulate between a receiving position for receiving the cloth and a standby position for waiting after the received cloth is dropped onto the second conveyor. A holding device such as a plurality of turn rolls can be used by the circulation device, which contributes to an increase in work speed.

  Since the fabric reversing device of the present invention is configured as described above, it can be combined with various working devices such as quality inspection and folding of the previously described washed fabric. When applying to quality inspection, it is desirable to arrange a defect inspection device for one side of the fabric on the first conveyor side and a defect inspection device for the other side of the fabric on the second conveyor side.

  Since the present invention is configured and operates as described above, by including a stock conveyor that receives the cloths that come down from the first conveyor and temporarily stocks them from the tip portion, Even if the workpiece, that is, the cloth does not have its front end and tail end interchanged, the reversing operation for the next fabric can be executed, and the working speed can be improved. In addition, according to the present invention, it is possible to provide a cloth inversion device capable of continuously feeding cloth without leaving an interval equal to the length of one piece of cloth, and after washing. It can be combined with various work devices such as cloth quality inspection and folding.

  Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments. FIG. 1 shows a side surface of the cloth reversing device 10. In each figure, 11 is a first conveyor located upstream, 12 is a second conveyor located downstream, and 14 is a stock conveyor. A required interval 13 is provided between the end 11 a of the first conveyor 11 and the end 12 a of the second conveyor 12 in order to perform the reversing operation. It is arrange | positioned so that the direction may become a low position.

The stock conveyor 14 is provided for temporarily storing the cloth w that comes down so that the tip end portion a of the first conveyor 11 hangs down from the end 11b, and the first conveyor 11 and the second conveyor 12 are provided. It is arranged at the bottom of. The stock conveyor 14 conveys the fabric at a lower speed than the first conveyor 11, but in the tip-to-tail switching method of the present invention, the stock conveyor 14 is switched to a state in which the tail end portion z precedes and is transported through the second conveyor 12. This is because it is desirable to keep the stocked end portion side from being far from the vicinity of the rear end of the second conveyor 12.

And, in order to hold the tail end portion z of the cloth w hanging from the rear end of the first conveyor 11 and transfer it to the second conveyor, the transfer mechanism 15 is arranged in front of the first conveyor 11 and It is arranged on the upper part of the second conveyor 12. The delivery mechanism 15 has a revolving device 19 composed of sprockets 16 and 17 and a chain 18 and holding means provided on the chain 18 to hold and hold the cloth w at the tail end portion z. ing. Two holding means circulate between the receiving position 21 for receiving the cloth w positioned in front of the first conveyor 11 and the standby position 22 for waiting after the received cloth w is dropped onto the second conveyor. The receiving position 21 and the standby position 22 are in a positional relationship separated by a half cycle.

  The holding means in the illustrated example comprises two turn rolls 20-1 and 20-2 and is attached to the chain 18 of the delivery mechanism 19 via a bracket 23. Therefore, in this example, since the cloth w is introduced into the side 24 of the bracket 23 of the turn rolls 20-1 and 20-2 and hangs downward therefrom, the movement of the turn rolls 20-1 and 20-2 is performed. The cloth w can be moved onto the second conveyor 12. The circling device 19 is configured by passing the left and right ends of the two turn rolls 20-1 and 20-2 to two sets of sprockets and chain mechanisms disposed on the left and right sides of the second conveyor (see FIG. 2). ).

  The operation of the present invention having such a configuration will be described together with the operation of the cloth reversing device 10. When the fabric w (which is the preceding fabric w1) is conveyed by the first conveyor 11, the leading end portion a of the roll is lowered so as to hang down from the end portion 11a, and the turn roll located at the receiving position 21 20-1 is crossed and enters the side 24 of the bracket 23 and goes downward (FIG. 3A). When the tip end portion a reaches the stock conveyor 14, the cloth w moves slowly along with its low speed movement (FIG. 3B). Due to the slow transport speed of the stock conveyor 14, the fabric w is temporarily stored in a clogged form, but even if it is a fabric w like a long sheet because of its low speed, It can be stocked in a small conveyor space (FIG. 4A).

  When the tail end portion z of the cloth w passes through the set position, the passage is detected by the sensor 25, the turning device 19 starts operating based on the detection signal, and the turn roll 20-1 is moved to the second conveyor 12. Since it moves in the same direction as the second conveyor 12 at the upper part, the tail end portion z entering the void 24 is passed so as to press onto the second conveyor 12 (FIG. 4B). Along with this delivery, the tail end portion z of the fabric w moves together with the second conveyor 12 (FIG. 5A), but during the delivery, it continues to be held by that length while being moved by the chain 18. The turn roll 20-1 is pressed while giving a suitable resistance force to the cloth w by free rotation, and moves to the standby position 22 (FIG. 5B). Thus, the tail end portion z is changed to the head and the second conveyor 12 is conveyed, and the front / back reversing operation for the cloth w (w1) is completed.

  When the reversing operation for the cloth w (w1) is nearing completion, the turn roll 20-2 moved from the standby position 22 is attached to the receiving position 21, and preparation for receiving the next cloth w (w2) is completed. doing. Subsequently, the conveyed fabric w hangs down from the end portion 11a, gets over the turn roll 20-2 located at the receiving position 21 and enters the space 24 between the chain 18 and the stock conveyor 14 (FIG. 6A). At this time, even if the preceding cloth w1 inverted by the preceding turn roll 20-1 remains on the stock conveyor 14, the stock conveyor 14 is low speed, so that the preceding cloth w1 and the following cloth w2 are entangled. Things don't happen. The succeeding cloth w2 is also reversed and transported by the second conveyor 12, but the transport interval 26 is very small and the cloth w can be transported at a higher density on a certain conveyor. (FIG. 6B).

  When the cloth reversing device 10 according to the present invention is applied to the quality inspection of the washed and ironed cloth w, the first defect inspection apparatus for the one surface U of the cloth w on the first conveyor 11 side. 27, and the second defect inspection device 28 for the other surface D of the cloth w can be disposed on the second conveyor 12 side. The defect inspection device 27 for the one surface U of the cloth w passes through the inspection table 27a arranged on the first conveyor side and illuminates the upper surface (one surface U) of the cloth w and an inspection device 29. The defect inspection apparatus 28 for the other surface D of the cloth w having the camera 30 passes over the inspection table 28a disposed on the second conveyor side, and the lower surface of the cloth w (the other surface D). Has an illuminator 31 and a camera 32 for inspection.

  In the above configuration, when the cloth w is conveyed toward the first conveyor 11, the upper surface (one surface U) of the cloth w is illuminated by the illuminator 29 and the first defect is inspected. Photographed or imaged by the camera 30 of the device 27. Subsequently, when the fabric w is conveyed from the first conveyor 11 through the fabric reversing device 10 to the end of the front / back reversing operation, the upper surface (the other surface D) of the fabric w is proved by the illuminator 31. At the same time, the camera 32 of the second defect inspection apparatus 28 captures or captures an image. Therefore, inspection of defects can be performed from above the cloth w by the two defect inspection devices 27 and 28.

  As described above, the cloth reversing device 10 of the present invention has the first conveyor 11, the second conveyor 12 in front of the first conveyor 11, and the stock conveyor 14 that operates at a low speed in the lower part thereof. With the configuration provided with 15, the insertion interval of the fabric w can be shortened to enable continuous introduction, and the compactness can be realized.

  The cloth reversing device of the present invention has room for use in reversing relatively simple clothing such as yukata and gowns in addition to the sheets and towels as described above. At that time, the easy to move parts such as collars and sleeves can be temporarily fixed, the position of the stock conveyor can be raised, or the range that can be handled can be expanded by tilting the conveyor tip downward Become.

It is side explanatory drawing which shows an example of the cloth inversion apparatus which concerns on this invention. It is plane explanatory drawing of an apparatus same as the above. In the operation explanatory view of the above apparatus, A is a side view showing a state when the cloth is put in, and B is a side view showing a state where the leading end portion of the cloth is attached to the stock conveyor. Similarly, in the operation explanatory diagram, A is a side view showing a state where the cloth stock is accumulated, and B is a side view showing a state where the turn roll is moved by detecting the rear end portion of the cloth. Similarly, in the operation explanatory view, A is a side view showing a state where the cloth is moved by the turn roll, and B is a side view showing an approaching state of the subsequent cloth. Similarly, in the operation explanatory view, A is a state in which the leading end portion of the following cloth is attached to the stock conveyor, and B is a side view. It is a side view which shows the example which applied the cloth inversion apparatus of this invention to the quality inspection apparatus of the washed cloth. It is explanatory drawing which shows an example of the conventional cloth inversion apparatus.

DESCRIPTION OF SYMBOLS 10 Cloth inversion apparatus 11 1st conveyor 12 2nd conveyor 13 Required space | interval 14 Stock conveyor 15 Delivery mechanism 16, 17 Sprocket 18 Chain 19 Circulation apparatus 20-1, 20-2 Turn roll 21 Reception position 22 Standby position 23 Bracket 24 Side of bracket 25 Sensor 26 Transport interval 27, 28 Defect inspection device 29, 31 Illuminator 30, 32 Camera

Claims (3)

A device that reverses the cloth conveyed by the first conveyor onto the second conveyor,
An interval is provided between the end of the first conveyor and the end of the second conveyor, and the second conveyor is arranged at a low position, and the leading end portion is lowered from the end of the first conveyor. In order to place and temporarily store the cloth, a stock conveyor that conveys the cloth at a lower speed than the first conveyor is disposed below the first and second conveyors, and is lowered to the end of the first conveyor. A delivery mechanism for holding the tail end portion of the cloth and passing it onto the second conveyor is disposed in front of the first conveyor and at the top of the second conveyor. The delivery mechanism includes a circulating device composed of a sprocket and a chain, and a cloth. A cloth reversing device having a holding means provided on the chain for locking and holding the belt at the tail end portion .   The holding means is composed of a plurality of holding means that circulate between a receiving position that is positioned in front of the first conveyor and receives the cloth, and a standby position that waits after the received cloth is dropped onto the second conveyor. Item 1. A cloth reversing device according to Item 1. The cloth inversion apparatus according to claim 1, wherein a defect inspection device for one surface of the cloth is disposed on the first conveyor side, and a defect inspection device for the other surface of the cloth is disposed on the second conveyor side.

Images