A tip-over prevention device for preventing a group of cloth from tipping over, a conveying device having the tip-over prevention device, and a linen system having the conveying device

Abstract

To provide an overturning prevention device for preventing the overturning of a group of cloths in a state where a plurality of cloths folded in a prescribed shape conveyed to speed up processing are stacked, a conveying device having the overturning prevention device, and a linen system having the conveying device.MEANS FOR SOLVING THE PROBLEM: An overturning prevention device is designed to prevent the overturning of a group of cloths by supporting one side when a group of cloths in which a plurality of cloths folded to have one side are stacked is conveyed in the one-side direction.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a device for preventing a plurality of folded pieces of cloth from tipping over when they are stacked and transported, a transport device having the tipping prevention device, and a linen system having the transport device. [Background technology]

[0002] The linen products handled by the so-called linen supply industry, which are used by clients such as hotels and hospitals, include, for example, sheets, bed covers, large and small towels, and various other types of cloth. Linen supply businesses collect these cloth products from their clients, wash, iron, fold, and then deliver them to the clients in a repeated process. That is, the cloth products are washed, then fed into the process by a feeder, ironed by an ironer, folded to a specified size, stacked in multiples, and tied by a binding machine in units of a specified number of sheets, before being delivered to the above-mentioned clients.

[0003] In addition, in response to customer requests, cloth items such as towels and bath towels are washed, dried, and folded into a specified shape such as in half, in thirds, in French folds, or in fourths, and then a number of folded cloth items are piled up to form a single cloth group, which are then tied together and delivered. The cloth group can consist of any number of pieces, such as five or ten pieces, depending on the customer's request.

[0004] On the other hand, JP 2019-000345 A discloses a linen facility that is such a linen system. Paragraph 0011 of this publication states, "The configuration of the linen facility A according to the first embodiment of the present invention will be described. As shown in FIG. 1, the linen facility A is composed of a plurality of fabric processing devices 10, 20, 30, and 40 that process fabric F. The processing line is configured by connecting the plurality of fabric processing devices 10, 20, 30, and 40 in series. While the fabric F is transported through the processing line, various processes are performed by the various fabric processing devices 10, 20, 30, and 40." This FIG. 1 also shows that the processing line is configured with a series connection.

[0005] Although this processing line is for sheets, it can also be applied to relatively light fabrics such as towels. In some cases, such fabrics are delivered in bundles, each bundle being made up of a number of fabrics folded into a specific shape, in response to customer requests.

[0006] However, in some cases, it is not possible to connect the processing lines in series at the location where these devices are installed, and the layout of these devices may require the conveying direction of a pile of fabrics, which is a pile of fabrics folded into a predetermined shape, to be turned around in order to convey the pile to the binding machine. In this case, the pile of fabrics may fall over when it is transferred from one conveyor to another. In this case, the worker must remove the fallen and collapsed pile of fabrics from the processing line, which makes it difficult to speed up the processing. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent Publication No. 2019-000345 DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0008] Therefore, the present invention has been made with attention to the above-mentioned points, and its object is to provide a tip-over prevention device that prevents a pile of cloth items, which are folded into a specified shape and transported in order to speed up processing, from tipping over, and a linen system having such a tip-over prevention device. [Means for solving the problem]

[0009] In order to solve the above-mentioned problems, the inventors have conducted research and development and have developed a tip-over prevention device of a first aspect, which prevents a group of fabrics, consisting of multiple stacked pieces of fabric folded to have one side, from tipping over by supporting one side when the group of fabrics is transported in the direction of that side.

[0010] In addition, the second aspect of the anti-tip device is, in the first aspect, the anti-tip device has a driving unit that drives the device and a anti-tip part that appears and retracts due to the driving unit, and when the driving unit is driven, the anti-tip part appears and supports the one side, thereby preventing the group of fabrics from tipping over.

[0011] In addition, the third aspect of the anti-tip device is the same as the second aspect, except that the anti-tip device has a link portion having one end and the other end, and the drive portion has a cylinder portion and an axle portion that can move into and out of the cylinder portion, the axle portion is connected to one end and the other end is connected to the anti-tip portion, and as the axle portion moves, the link portion rotates and the anti-tip portion appears.

[0012] In addition, the fourth aspect of the anti-tip device is based on the second aspect, and the drive unit has a cylinder portion and an axle portion that moves so as to be able to appear and disappear into the cylinder portion, the axle portion is connected to the anti-tip part, and the anti-tip part appears when the axle portion moves.

[0013] In addition, a cloth conveying device of a fifth aspect has a first conveying device that conveys a group of cloth consisting of multiple stacked pieces of cloth folded to have one side in one side direction, a second conveying device that conveys the group of cloth conveyed in the one side direction by the first conveying device, and a tip-over prevention device of the first aspect and the fourth aspect, in which the tip-over prevention device of the first aspect and the fourth aspect supports one side of the group of cloth conveyed in the one side direction by the first conveying device, and the second conveying device further conveys the group of cloth with one side supported by the support device.

[0014] In addition, a linen system according to a sixth aspect has a stacking device for stacking a plurality of pieces of cloth folded to have one side, and the cloth conveying device according to the fifth aspect. Effect of the Invention

[0015] Since the present invention is configured and functions as described above, it is possible to provide a tip-prevention device that prevents a pile of fabrics, which are made up of multiple pieces of fabric folded into a specified shape and transported in order to speed up processing, from tipping over, and a linen system that has this tip-prevention device. [Brief description of the drawings]

[0016] [Figure 1] FIG. 2 is a plan view of the tip-over prevention device and stacking device of the first embodiment. [Diagram 2] FIG. 2 is a side view seen from the X direction in FIG. [Diagram 3] 1A is a side view of the fall prevention device attached to the fall prevention device mounting part in a state where the fall prevention device has been removed from the position where the cloth group is supported, and FIG. 1B is a side view of the fall prevention device attached to the fall prevention device mounting part in a state where the fall prevention device has been presented to the position where the cloth group is supported. [Figure 4] 1A is a plan view of the fall prevention device and the stacking device of the first embodiment when a group of cloths is being transported by the first transport device, and FIG. 1B is a side view of the fall prevention device and the stacking device as viewed from the X direction. [Diagram 5]1A is a plan view of the tip-over prevention device and the stacking device of the first embodiment in a state where the cloth group is further transported by the first transport device, and FIG. [Figure 6] 1A is a plan view of the fall prevention device and stacking device of the first embodiment in a state where the cloth group is further transported by the first transport device and the second B conveyor is extended. 1B is a side view of A as viewed from the X direction. [Figure 7] FIG. 1A is a plan view of the fall prevention device and stacking device of the first embodiment in a state where the fabric group is further conveyed by the first conveying device and the fall prevention part of the fall prevention device appears on the second conveying device. FIG. 1B is a side view of A as seen from the X direction. [Figure 8] 1A is a plan view of the fall prevention device and the stacking device of the first embodiment in a state where the fall prevention part of the fall prevention device appears on the second conveying device and supports one side of the cloth group, and B is a side view of A as seen from the X direction. [Figure 9] 1A is a plan view of the fall prevention device and stacking device of the first embodiment in a state where the fall prevention part of the fall prevention device supports one side of the cloth group while the 2B conveyor is returning to the 2A conveyor. B is a side view of A as viewed from the X direction. [Figure 10] FIG. 1A is a plan view of the fall prevention device and stacking device of the first embodiment in a state where the fall prevention part of the fall prevention device supports one side of the cloth group and the 2B conveyor returns to the 2A conveyor. FIG. 1B is a side view of A as viewed from the X direction. [Figure 11] 1A is a plan view of the fall prevention device and the stacking device of the first embodiment when the fall prevention part of the fall prevention device returns to its original state and the second conveying device is about to convey the cloth group. B is a side view of A as seen from the X direction. [Figure 12] FIG. 11 is a plan view of the anti-tip device and stacking device of the second embodiment. [Figure 13] 13 is a side view seen from the X direction in FIG. 12. FIG. [Figure 14] FIG. 13 is a plan view of the anti-tip device and stacking device of the third embodiment. [Figure 15] 15 is a side view seen from the X direction in FIG. 14. BEST MODE FOR CARRYING OUT THEINVENTION

[0017] Before describing the fall prevention device 10 of the first embodiment with reference to the illustrated embodiment, the fabric processing process in the linen supply industry will be briefly described below. Sheets, bed covers, large and small towels, and other fabrics used by clients such as hotels and hospitals are collected, washed, and ironed with an ironer (not shown), and then folded into a predetermined shape and stacked by a stacking device 200 in units of a predetermined number of fabrics. The fabrics folded into a predetermined shape and stacked in units of a predetermined number of fabrics are tied with a string by a binding machine (not shown). The group of fabrics 100 refers to a single piece of fabric that has been folded into a specified shape and then multiple pieces of the fabric are stacked on top of each other. Depending on the customer's request, for example, group of fabrics 100 may be made up of 10 pieces of fabric folded into a specified shape, such as thirds, fourths, or French folds, stacked together to form group of fabrics 100, or group of fabrics 100 may be made up of five pieces of fabric folded into the specified shape described above and aligned in two rows to form group of fabrics 100, or group of fabrics 10 pieces of fabric folded into a specified shape and aligned in two rows to form group of fabrics 100. The group of fabrics 100 may be made up of any number of folded pieces of fabric that have been stacked together to form group of fabrics.

[0018] Since such a cloth group 100 is a state in which a plurality of cloths folded into a predetermined shape are piled up, it is discharged from the stacking device 200 and conveyed by a conveyor as a conveying device to a binding machine (not shown) that strings the cloth group 100. However, when the cloth group 100 is transferred from the conveyor as a conveying device to another conveyor, it may fall over due to a step or the like from the conveyor as a conveying device to the other conveyor. Furthermore, when the conveying direction of the cloth group 100 is changed, the piled cloth group 100 may fall over. The tip-over prevention device 10 of the first embodiment is intended to prevent such a cloth group 100 from falling over. The same applies to the tip-over prevention device 300 of the second embodiment described later and the tip-over prevention device 700 of the third embodiment described later.

[0019] The tip-over prevention device 10 of the first embodiment can be applied to a conveying device having a first conveying device 220 and a second conveying device 240 described later, and can also be applied to a linen system 980 having a stacking device 200. The same is true for a tip-over prevention device 300 of a second embodiment and a tip-over prevention device 700 of a third embodiment described later.

[0020] The fall prevention device 10 of the first embodiment is attached to a fall prevention device attachment part 500. The fall prevention device attachment part 500 has an attachment part 510 to which the fall prevention device 10 is attached, a moving part 520 that serves as a track along which the attachment part 510 moves in the U direction and the D direction in Fig. 1, a plurality of pillar parts 540 that are pillars supporting the moving part 520, and rail parts 530, 530 that connect the upper ends of the plurality of pillar parts 540. In Fig. 1, the moving part 520 can move in the left and right directions LR along the rail parts 530, 530.

[0021] In this way, the mounting section 510 is moved in the U and D directions by the moving section 520, and the moving section 520 can move in the left and right LR directions along the rail sections 530, 530. Therefore, regardless of where the group of fabrics 100 is placed on the first conveying device 220, which will be described later, the anti-tip device 10 can support the group of fabrics 100 being conveyed by the first conveying device 220.

[0022] The tip-over prevention device 10 of the first embodiment has a drive unit 20 that is driven to be able to protrude and retract, and a tip-over prevention unit 40. The drive unit 20 is preferably an air cylinder, and has a cylinder unit 21 and a piston shaft 22, and the piston shaft 22 is arranged to be able to protrude and retract relative to the cylinder unit 21. The tip-over prevention unit 40 is plate-shaped, and is driven by the drive unit 20 to support one side 101 of the group of fabrics 100 and prevent the group from tipping over.

[0023] The tip-over prevention device 10 of the first embodiment further includes a link member 30. This link member 30 literally connects the driving unit 20 and the tip-over prevention unit 40. When the piston shaft 22 in the driving unit 20 is retracted into the cylinder unit 21, one end 31 of the link member 30 connected to the piston shaft unit 22 rotates in the direction of the arrow F (see FIG. 3A), and the tip-over prevention unit 40 connected to the other end 32 of the link member 30 rotates in the direction of the arrow F, and the tip-over prevention unit 40 appears (see FIG. 3B). That is, the tip-over prevention unit 40 is disposed almost vertically on the second conveying device 240 described later, so to speak, the tip-over prevention unit 40 is disposed so as to appear on the second conveying device 240 described later. The tip-over prevention unit 40 has a plate shape (see FIG. 3AB). The driving cylinder 20 is preferably an air cylinder, and may be an electric cylinder.

[0024] Conversely, when the piston shaft 22 of the drive unit 20 protrudes from the cylinder unit 21 from the state in which it is retracted into the cylinder unit 21 (see FIG. 3B), one end 31 of the link member 30 connected to the piston shaft portion 22 rotates in the direction of the arrow S, and the tip-over prevention unit 40 connected to the other end 32 of the link member 30 rotates in the direction of the arrow S, and the tip-over prevention unit 40 is retracted. That is, the tip-over prevention unit 40 is disposed substantially horizontally with respect to the second conveying device 240, and is configured to retreat from above the second conveying device 240 (see FIG. 3A). In this way, the tip-over prevention device 10 of the first embodiment is configured to be able to move in and out. That is, to appear means that the tip-over prevention device 10 appears at a position supporting the group of fabrics 100, and to retreat means that the tip-over prevention device 10 leaves the position supporting the group of fabrics 100.

[0025] The stacking device 200, which stacks fabrics folded in a predetermined shape in units of a predetermined number of pieces, is a device that literally folds fabrics in a predetermined shape such as in half, in thirds, in French, or in fourths, and stacks a number of the folded fabrics into a single group of fabrics 100. This group of fabrics 100 may be, for example, five pieces of fabric arranged in two rows, or ten pieces of fabric stacked in one row, and the number of pieces may be any number of fabrics depending on the customer's request. Note that the stacking device 200 that stacks fabrics in this way is already known.

[0026] Next, the operation of the tip-over prevention device 10 of the first embodiment will be described. First, the stacking device 200 has a two-story structure, so to speak, and drops fabric folded into a predetermined shape from a folding conveyor 223 on the second floor 202 onto a stacking conveyor 211 arranged on the first floor 201, and stacks a plurality of such fabrics into one bundle of fabrics 100. In this way, the fabrics 100 are arranged on the stacking conveyor 211.

[0027] The fabric group 100 arranged on the stacking conveyor 211 is moved in the direction of one side 101 of the fabric group 100 by the stacking conveyor 211. The fabric group 100 has one side 101 and another side 102, and moves with the first side 101 at the front. As shown in the figure, the first side 101 may be a long side and the other side 102 may be a short side, and the fabric group 100 may be prone to tipping over if the long side 101 is moved to the front. In this way, the tipping prevention device 10 supports the side 101 of the fabric group 100, which is made up of multiple pieces of fabric folded to have the side 101, when the fabric group 100 is transported in the direction of the side 101, thereby preventing the fabric group 100 from tipping over.

[0028] The stacking conveyor 211 moves the group of cloths 100 in the direction of the side 101. A start sensor 230 is disposed on the first conveying device 220, which is a conveyor, near the stacking conveyor 211, and detects the group of cloths 100 that has been transferred from the stacking conveyor 211 to the first conveying device 220 and moved in the direction of the side 101 (see Figs. 4A and 4B). For ease of understanding, the tip-over prevention device 10 has been omitted from each of Figs. 4 to 11A.

[0029] When the start sensor 230 detects the cloth group 100, the first conveying device 220 is driven, and the cloth group 100 transferred to the first conveying device 220 further moves in the direction of one side 101. The first conveying device 220 has an extension function. That is, the first conveying device 220 has a second A conveyer 221 and a second B conveyer 222, and the second B conveyer 222 is configured to be able to enter and exit the second A conveyer 221. A stop sensor 231 is disposed near the rear end 222a of the second B conveyer 222 in the first conveying device 220, and when the stop sensor 231 detects the conveyed cloth group 100, the second B conveyer 222 stops (see Figs. 5A and B, Figs. 6A and B).

[0030] The first conveying device 220 is extended or retracted to a predetermined arbitrary position by its extension / retraction function. That is, as described above, the second B conveyor 222 moves to an arbitrary position relative to the second A conveyor 221. In this embodiment, it is preferable that the second B conveyor 222 moves to the vicinity of the center of the second conveying device 240.

[0031] When the second B conveyor 222 of the first conveying device 220 moves to near the center of the second conveying device 240, the first sensor 235 detects the moved second B conveyor 222 and stops the movement of the second B conveyor 222 (see Figures 6A and B).

[0032] Thereafter, when the stop sensor 231 detects the group of cloths 100, the conveyance is stopped. The fall prevention device 10 of the first embodiment starts at the same time that the second B conveyor 222 described above moves to an arbitrary position relative to the second A conveyor 221. That is, the piston shaft 22 in the drive unit 20 of the fall prevention device 10 of the first embodiment is drawn into the cylinder unit 21, one end 31 of the link member 30 connected to the piston shaft unit 22 rotates in the direction of the thin arrow in the drawing and is connected to the other end 32 of the link member 30, the fall prevention unit 40 rotates in the direction of the thin arrow in the drawing, and the fall prevention unit 40 appears on the second conveyor 240 (see Figs. 7A and 7B). The fall prevention device 300 of the second embodiment and the fall prevention device 700 of the third embodiment described later also start at the same time that the second B conveyor 222 moves to an arbitrary position relative to the second A conveyor 221.

[0033] At this time, the tip-over prevention unit 40 is suspended from the ceiling 510 of the tip-over prevention device mounting section 500, and the tip-over prevention end 41 of the tip-over prevention unit 40 is arranged so as to leave a slight gap with the second conveying device 240. At the same time, the first conveying device 220 starts conveying the group of cloths 100 placed on the second B conveyer 222 from the second A conveyer 221.

[0034] When the group of fabrics 100 placed on the second B conveyor 222 reaches the vicinity of the rear end 222a of the second B conveyor 222, the stop sensor 231 detects the group of fabrics 100 and stops the transport after a predetermined time has elapsed. At this time, one side 101 of the group of fabrics 100 is in contact with the tip-over prevention unit 40, so the group of fabrics 100 is not transported any further and there is no risk of the group of fabrics tipping over (see Figs. 8A and B). Note that the predetermined time may refer to the period until the second pile of fabrics contacts the first pile of fabrics that first contacts the tip-over prevention unit 40 when, for example, two piles of fabrics are bound together by folding the fabrics into a predetermined shape.

[0035] After that, the 2B conveyor 222 moves in the direction of the 2A conveyor 221. That is, the expanded first conveying device 220 contracts. At this time, one side 101 of the cloth group 100 remains in contact with the tip-over prevention unit 40, and is transferred onto the second conveying device 240 (see Figs. 9A and B). At this time, although there is a step between the 2B conveyor 222 and the second conveying device 240, which is a conveyor in this embodiment, the cloth group 100 is in contact with the tip-over prevention plate 40 in the tip-over prevention device 10 of the first embodiment, and therefore the cloth group 100 can be prevented from tipping over or collapsing (see Figs. 10A and B).

[0036] The second conveying device 240 starts, and one side 101 of the cloth group 100 moves in the direction of arrow T along the tip-over prevention section 40 while remaining in contact with the tip-over prevention section 40 (see FIG. 10A).

[0037] At the same time, the second B conveyor 222 moves toward the second A conveyor 221, and when they approach each other, the second sensor 236 detects the second B conveyor 222 and stops its movement (see Figures 11A and 11B).

[0038] At that time, the piston shaft 22 of the drive cylinder 20 extends from the cylinder 21, and one end 31 of the link member 30 connected to the piston shaft portion 22 rotates in the direction of the arrow in the drawing. As one end 31 of the link member 30 rotates in the direction of the arrow in the drawing, the tip-over prevention portion 40 connected to the other end 32 of the link member 30 rotates in the direction of the arrow, and the tip-over prevention portion 40 is disposed so as to be along the ceiling portion 510. In this way, the support device 20 is configured to be able to appear and disappear (see FIGS. 11A and 11B).

[0039] Next, a second embodiment of the anti-toppling device 300 will be described. The anti-toppling device 300 of the second embodiment has a second driving unit 350 that drives the device, and a second anti-toppling unit 400. The anti-toppling device 300 of the second embodiment is attached to an anti-toppling device mounting unit 600. The anti-toppling device mounting unit 600 has a mounting member 610, rails 630, 630 that mount the mounting member 610 so that the mounting member 610 can move in the left and right directions, and a plurality of pillars 640. The second driving unit 350 is preferably an air cylinder, but may also be an electric cylinder (see Figs. 12 and 13).

[0040] The second driving part 350 has a second cylinder part 360 and a second piston shaft 370, and the second piston shaft 370 is disposed so as to be able to protrude and retract into the second cylinder part 360. When the second piston shaft 370 in the second cylinder part 360 extends from the second cylinder part 360, the second tip-over prevention part 400 connected to the second piston shaft 370 descends downward and appears at a position above the second conveying device 240 where it contacts the group of fabrics 100.

[0041] Conversely, when the second piston shaft 370 of the second drive part 350 is retracted into the second cylinder part 360, the second piston shaft 370 and the second tip-over prevention part 400 are pulled up to a position where they do not come into contact with the cloth group 100. In this manner, the tip-over prevention device 300 is configured to be retractable.

[0042] The tip-over prevention device 300 of the second embodiment is attached to a tip-over prevention device attachment part 600, which has an attachment part 610 to which the tip-over prevention device 300 of the second embodiment is attached, moving parts 620, 620 that form a track along which the attachment part 610 moves in the U direction and D direction in Fig. 12, a plurality of pillar parts 640 that are pillars supporting the moving parts 620, 620, and rail parts 630, 630 that connect the upper ends of the plurality of pillar parts 640. In Fig. 12, the moving part 620 can move in the left and right directions LR along the rail parts 630, 630.

[0043] In this way, the mounting section 610 is moved in the U and D directions by the moving section 620, and the moving section 620 can move in the left and right LR directions along the rail sections 630, 630. Therefore, regardless of where the group of fabrics 100 is placed on the first conveying device 220, the anti-tip device 300 can support the group of fabrics 100 being conveyed by the first conveying device 220.

[0044] In addition, the operation of the fall prevention device 300 of the second embodiment is almost the same as that of the fall prevention device 10 of the first embodiment, and the same symbols are used and their explanations may be omitted, but just to be sure, they will be explained as follows.

[0045] At the same time that the second B conveyor 222 in the first conveying device 220 starts to move, the second piston shaft 370 in the second cylinder 360 extends from the second cylinder 360, and the second tip-over prevention part 400 connected to the second piston shaft 370 descends downward and appears on the second conveying device 240 at a position where it contacts the group of cloths 100. The second piston shaft 370' descended downward and the second tip-over prevention part 400' connected thereto are shown in FIG. 13.

[0046] At this time, the second tip-over prevention unit 400 is suspended from the ceiling 510 of the tip-over prevention device mounting unit 500, and the second tip-over prevention one end 410' of the second tip-over prevention unit 400' is disposed so as to leave a slight gap with the second conveying device 240. At the same time, the first conveying device 220 starts conveying the group of cloths 100 placed on the second B conveyer 222 from the second A conveyer 221.

[0047] When the group of cloths 100 placed on the second B conveyor 222 reaches the vicinity of the rear end 222a of the second B conveyor 222, the stop sensor 231 detects the group of cloths 100 and stops the transport after a predetermined time has elapsed. At this time, one side 101 of the group of cloths 100 (not shown) is in contact with the second tip-over prevention unit 400, so the group of cloths 100 is not transported any further and there is no risk of the group of cloths 100 tipping over. In this way, the tip-over prevention device 300 of the second embodiment can prevent the group of cloths 100 from tipping over.

[0048] Next, a third embodiment of the anti-toppling device 700 will be described. The anti-toppling device 700 of the third embodiment has a third driving unit 750 that drives the device, and a third anti-toppling unit 800. The anti-toppling device 700 of the third embodiment is attached to an anti-toppling device mounting unit 900. The anti-toppling device mounting unit 900 has a mounting member 910, rails 930, 930 that mount the mounting member 910 so that the mounting member 910 can move in the left and right directions, and a plurality of pillars 940. The third driving unit 750 is preferably an air cylinder, but may also be an electric cylinder.

[0049] The third driving unit 750 has a third cylinder 760 arranged in a horizontal direction and a third piston shaft 770, and the third piston shaft 770 is arranged so as to be able to move in and out of the third cylinder 760. When the third piston shaft 770 in the third cylinder 760 extends from the third cylinder 760, the third tip-over prevention unit 800 connected to the third piston shaft 770 moves from outside the second conveying device 240 onto the second conveying device 240 and appears on the second conveying device 240 at a position where it contacts the group of fabrics 100. The third tip-over prevention unit 800' that appears on the second conveying device 240 at a position where it contacts the group of fabrics 100 is shown in FIG. 14.

[0050] Moreover, the operation 700 of the third embodiment of the anti-toppling device is substantially the same as the operation 10 of the anti-toppling device 300 of the second embodiment of the present invention, and so the same reference numerals are used and the explanation thereof is omitted, but for the sake of certainty, the following explanation will be given.

[0051] The tip-over prevention device 700 of the third embodiment is attached to a tip-over prevention device attachment part 900, which has an attachment part 910 to which the tip-over prevention device 700 of the third embodiment is attached, moving parts 920, 920 that form a track along which the attachment part 910 moves in the U direction and D direction in Fig. 14, a plurality of pillar parts 940 that are pillars supporting the moving parts 920, 920, and rail parts 930, 930 that connect the upper ends of the plurality of pillar parts 940. In Fig. 14, the moving part 910 can move in the left and right directions LR along the rail parts 930, 930.

[0052] In this way, the mounting portion 910 moves in the U direction and D direction by the moving portions 920, 920, and the moving portions 920, 920 can move in the left and right LR directions along the rail portions 930, 930, so that the anti-tip device 700 can support the group of fabrics 100 transported by the first conveying device 220 regardless of where the group of fabrics 100 is placed on the first conveying device 220.

[0053] At the same time that the second B conveyor 222 in the first conveying device 220 starts to move, the third piston shaft 770 in the third cylinder 760 extends from the third cylinder 760, and the third tip-over prevention part 800' connected to the third piston shaft 770 appears on the second conveying device 240 at a position where it contacts the group of fabrics 100 (see FIG. 15).

[0054] At this time, the third tip-over prevention one end 810' of the third tip-over prevention section 800' is positioned so as to leave a slight gap with the second conveying device 240. At the same time, the first conveying device 220 starts conveying the cloth group 100 placed on the second B conveyer 222 from the second A conveyer 221.

[0055] When the group of cloths 100 placed on the 2B conveyor 222 reaches the vicinity of the rear end 222a of the 2B conveyor 222, the stop sensor 231 detects the group of cloths 100 and stops the transport after a predetermined time has elapsed. At this time, one side 101 of the group of cloths 100 (not shown) is in contact with the third tip-over prevention unit 800, so the group of cloths 100 is not transported any further and there is no risk of the group of cloths 100 tipping over. In this way, the tip-over prevention device 700 of the third embodiment can prevent the group of cloths 100 from tipping over. [Explanation of symbols]

[0056] 10 Fall prevention device of the first embodiment 20 Drive unit 21 Cylinder section 22 Piston shaft 30 Link member 31 One end 32 Other end 40 Fall prevention unit 100 Cloth Group 200 Stacking Device 201 1st floor part 202 2nd floor part 211 Stacking Conveyor 220 First conveying device 221 2nd A Conveyor 222 2nd B Conveyor 230 Start Sensor 231 Stop Sensor 235 First Sensor 236 Second Sensor 240 Second conveying device 300 Fall prevention device of the second embodiment 350 Second Drive Unit 400 Second Fall Prevention Unit 700 Fall prevention device of the third embodiment 750 3rd Drive Unit 760 3rd cylinder 770 3rd piston shaft 800 3rd Fall Prevention Section 980 Linen System

Claims

1. A first conveying device that conveys a group of fabrics, which is a stack of fabrics folded to have one side, in the direction of the one side; a second conveying device that conveys the cloth group conveyed in the one side direction by the first conveying device; a fall prevention device including: a drive unit that drives a group of fabrics, which is a stack of fabrics folded to have the one side, to support the one side when the group of fabrics is transported in the direction of the one side; and a tip-over prevention unit that appears and retracts due to the drive unit, the tip-over prevention unit being plate-shaped, the plate-shaped tip-over prevention unit appearing when driven by the drive unit, and the plate-shaped tip-over prevention unit supporting the one side, thereby preventing the group of fabrics from tipping over; having The tip-over prevention device supports one side of the cloth group transported in the one side direction by the first transport device, and the second transport device further transports the cloth group whose one side is supported by the tip-over prevention device.

2. A first conveying device that conveys a group of fabrics, which is a plurality of stacked pieces of fabric folded to have one side, in the direction of the one side; a second conveying device that conveys the cloth group conveyed in the one side direction by the first conveying device; a fall prevention device including: a drive unit that drives a group of fabrics, which is a stack of fabrics folded to have the one side, to support the one side when the group of fabrics is transported in the direction of the one side; and a tip-over prevention unit that appears and retracts due to the drive unit, the tip-over prevention unit being plate-shaped, the plate-shaped tip-over prevention unit appearing when driven by the drive unit, and the plate-shaped tip-over prevention unit supporting the one side, thereby preventing the group of fabrics from tipping over; having The tip-over prevention device includes a link portion having one end and another end, The drive unit has a cylinder unit and a shaft unit that moves toward and away from the cylinder unit, The shaft portion is connected to the one end portion, and the other end portion is connected to the plate-shaped anti-tip portion, and when the shaft portion moves, the link portion rotates and the plate-shaped anti-tip portion appears, The tip-over prevention device supports one side of the group of cloth transported in the one side direction by the first transport device, and the second transport device further transports the group of cloth whose one side is supported by the tip-over prevention device.

3. A first conveying device that conveys a group of fabrics, which is a stack of fabrics folded to have one side, in the direction of the one side; a second conveying device that conveys the cloth group conveyed in the one side direction by the first conveying device; a fall prevention device including: a drive unit that drives a group of fabrics, which is a stack of fabrics folded to have the one side, to support the one side when the group of fabrics is transported in the direction of the one side; and a tip-over prevention unit that appears and retracts due to the drive unit, the tip-over prevention unit being plate-shaped, the plate-shaped tip-over prevention unit appearing when driven by the drive unit, and the plate-shaped tip-over prevention unit supporting the one side, thereby preventing the group of fabrics from tipping over; having The drive unit has a cylinder portion and a shaft portion that moves so as to be able to appear and disappear from the cylinder portion, The shaft portion is connected to the tip-over prevention portion, and the tip-over prevention portion having the plate shape appears as the shaft portion moves. The tip-over prevention device supports one side of the cloth group transported in the one side direction by the first transport device, and the second transport device is a cloth transport device that further transports the cloth group whose one side is supported by the tip-over prevention device.

4. A linen system comprising: a stacking device for stacking multiple pieces of fabric folded to have the one side; and a fabric conveying device described in any one of claims 1 to 3.

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