JP7100444B2 - Cloth folding device - Google Patents

Description

The present invention relates to a cloth folding device. At laundry factories, cloth such as sheets and towels are folded into small pieces after washing and ironing, and then shipped to hotels and hospitals. The present invention relates to such a cloth folding device for folding cloth.

Generally, a cloth folding device includes a plurality of conveyors for transporting cloth and a folding device for folding the cloth transported by the conveyor at a predetermined folding position (for example, Patent Document 1). The folding device is configured to move the folded plate back and forth toward the connection between the two conveyors. The folded plate is driven to push the folded position of the cloth toward the connecting portion of the two conveyors, and the cloth folded at the folding position is made to enter the connecting portion of the two conveyors to fold the cloth.

Japanese Unexamined Patent Publication No. 2007-105067

Depending on how the cloth is folded, the folded plate may guide the cloth to the connection between the two conveyors without folding the cloth. However, a gap is provided between the folded plate in the thrust state and the conveyor roller for the cloth to pass through. Due to this gap, the cloth may not be transferred from the folded plate to the conveyor normally. Then, the folding of the cloth fails, and the yield of the cloth folding device decreases.

In view of the above circumstances, it is an object of the present invention to provide a cloth folding device capable of reducing the failure of folding cloth.

The cloth folding apparatus of the first invention is arranged at a position where the first conveyor having the first roller around which the first conveyor belt is wound and the second conveyor belt are wound and face the first roller. The folding device includes a second conveyor having a second roller and a folding device having a folded plate that advances and retreats toward an entry portion between the first roller and the second roller. Between the first advancing / retreating operation of moving back and forth between the first advancing position and the retreating position separated from the first roller, and the second advancing position and the retreating position where the folded plate approaches the first roller. A second advancing / retreating operation is possible, and the folded plate moves in the alignment direction of the first roller and the second roller as the folded plate advances / retreats to the approaching portion, and the folded plate moves into the approaching portion. The more it advances toward the portion, the closer it approaches the first roller, and in both the first advance position and the second advance position, the tip portion of the folded plate is the first roller and the second roller. The second forward position is a position closer to the first roller than the first forward position, and the first roller holds cloths on the front and back surfaces of the folded plate. When it is arranged at a position facing the surface on which the cloth does not come into contact when leading to the approach portion without folding, and when the folded plate is advanced and the cloth is folded and pushed into the entry portion. When the folding device performs the first forward / backward operation and advances the folded plate to guide the cloth to the approach portion without folding the cloth, the folding device leads the cloth each time the folding device leads the cloth. It is characterized by performing a binary retreat operation.
In the first invention, the cloth folding device of the second invention includes the folding plate, a swivel arm provided with the folding plate, and a servo actuator for swiveling the swivel arm. It is characterized by.

According to the first invention, when the cloth is not folded, the gap between the folded plate in the forward state and the first roller becomes small, so that the cloth can be normally transferred from the folded plate to the first conveyor. can. As a result, it is possible to reduce the failure of folding the cloth.
According to the second invention, since the folding device is operated by the servo actuator, the position of the folded plate can be arbitrarily adjusted.

It is a side view of the front part part of the cloth folding apparatus which concerns on one Embodiment of this invention. It is a front view of the rear part of the cloth folding apparatus of FIG. It is explanatory drawing of the steps (1) and (2) in the case of 32 folds. It is explanatory drawing of the steps (3) and (4) in the case of 32 folds. It is explanatory drawing of the steps (5) and (6) in the case of 32 folds. It is explanatory drawing of the steps (3) and (4) in the case of 24 folds. It is explanatory drawing of the steps (5) and (6) in the case of 24 folds. It is explanatory drawing of the steps (7) and (8) in the case of 24 folds. It is an enlarged view near the 5th folding device. It is an enlarged view near the 5th folding apparatus in the case of 32 folding. It is an enlarged view near the 5th folding apparatus in the case of 24 folding. It is explanatory drawing of 32 fold. It is explanatory drawing of 24 folds.

Next, an embodiment of the present invention will be described with reference to the drawings.
(How to fold cloth)
The cloth folding device 1 according to the embodiment of the present invention can fold a square cloth C such as a sheet or a towel in a plurality of types of folding methods. Examples of how to fold the cloth C include "32 folds" and "24 folds".

As shown in FIG. 12, 32 fold is a folding method in which two folds are repeated five times. The 32 folding is performed by the following procedure. First, the stretched cloth C0 is folded in four at three folding positions L1, L2, and L3 parallel to the longitudinal direction. Next, the cloth C1 in the four-folded state is folded in half at the central folding position L4 in the longitudinal direction to be in the eight-folded state. Next, the cloth C2 in the eight-folded state is folded in half at the central folding position L5 in the longitudinal direction to be in the 16-folded state. Next, the 16-folded cloth C3 is folded in half at the central folding position L6 in the longitudinal direction to obtain the 32-folded cloth C4.

As shown in FIG. 13, 24 fold is a fold method that combines two folds and three folds. The 24 folds are performed by the following procedure. First, the cloth C0 in the stretched state is folded into eight in the same procedure as the 32 fold. The cloth C2 in the eight-folded state is defined as front Ca, central Cb, and rear Cc, respectively, by 1/3 from the leading edge F to the trailing edge R in the longitudinal direction. Fold it at the folding position L8 at the boundary between the rear portion Cc and the central portion Cb so that the rear portion Cc overlaps the upper surface of the central portion Cb. Next, the cloth C5 with the rear Cc overlapping the central Cb is folded at the folding position L7 at the boundary between the front Ca and the central Cb, and the front Ca is overlapped with the lower surface of the rear Cc and folded 24 times. Make the cloth C6 in the state.

(Cloth folding device)
Next, the configuration of the cloth folding device 1 of the present embodiment will be described.
The cloth folding device 1 includes a front stage portion 11 (see FIG. 1) for folding the stretched cloth C0 in four, and a rear stage portion 12 for folding the cloth C1 in the four-folded state to the final folding method (see FIG. 1). See Figure 2).

(Front part)
As shown in FIG. 1, the front stage portion 11 is provided with three conveyors 21 to 23 for transporting the cloth C. The first conveyor 21 is a conveyor that receives the stretched cloth C0 from a roll ironer or the like and sends it later. The second conveyor 22 is provided in contact with the lower transport surface of the first conveyor 21. The third conveyor 23 is provided in contact with the lower transport surface of the second conveyor 22. The downstream end of the third conveyor 23 is connected to the fourth conveyor 24 of the rear stage portion 12.

The front stage portion 11 is provided with two folding devices 41 and 42. The first folding device 41 is provided in the vicinity of the approach portion where the end of the first conveyor 21 and the start end of the second conveyor 22 are connected. The second folding device 42 is provided in the vicinity of the approach portion where the end of the second conveyor 22 and the start end of the third conveyor 23 are connected.

(Rear part)
As shown in FIG. 2, the rear portion 12 is provided with eight conveyors 24 to 31 for conveying the cloth C. The fourth conveyor 24 is connected to the downstream end of the third conveyor 23 of the front stage portion 11. Below the center of the fourth conveyor 24, the fifth conveyor 25 and the sixth conveyor 26 are provided in a state where the transport surfaces are in contact with each other. The transport surfaces of the fifth conveyor 25 and the sixth conveyor 26 are inclined downward. The cloth C is conveyed downward while being sandwiched between the fifth conveyor 25 and the sixth conveyor 26.

A seventh conveyor 27 is provided below the fifth and sixth conveyors 25 and 26. The transport surface of the seventh conveyor 27 is substantially horizontal. The eighth conveyor 28 and the ninth conveyor 29 are connected to the downstream portion (the right portion in FIG. 2) of the seventh conveyor 27. The eighth conveyor 28 and the ninth conveyor 29 are arranged vertically. Above the downstream portion of the ninth conveyor 29, the tenth conveyor 30 and the eleventh conveyor 31 are provided in a state where the transport surfaces are in contact with each other. The transport surfaces of the tenth conveyor 30 and the eleventh conveyor 31 are arranged substantially vertically. The cloth C is conveyed upward while being sandwiched between the 10th conveyor 30 and the 11th conveyor 31.

The rear portion 12 is provided with three folding devices 43 to 45. The third folding device 43 is provided in the vicinity of the approach portion where the start end of the fifth conveyor 25 and the start end of the sixth conveyor 26 are connected. The fourth folding device 44 is provided in the vicinity of the approach portion where the downstream portion of the seventh conveyor 27 and the start end of the eighth conveyor 28 are connected. The fifth folding device 45 is provided in the vicinity of the approach portion where the start end of the tenth conveyor 30 and the start end of the eleventh conveyor 31 are connected.

The third folding device 43 includes a folded plate 43a and an actuator for driving the folded plate 43a. The fourth folding device 44 includes a folded plate 44a and an actuator for driving the folded plate 44a. The fifth folding device 45 includes a folded plate 45a and an actuator for driving the folded plate 45a.

There is a gap at the connection between the 7th conveyor 27 and the 8th conveyor 28. The rear portion 12 is provided with a transfer plate 46 that opens and closes this gap.

A laminated portion 50 for laminating a predetermined number of folded cloths C is connected to the downstream of the tenth conveyor 30 and the eleventh conveyor 31.

As shown in FIG. 1, the cloth folding device 1 includes a control device 13. The control device 13 is a computer composed of a CPU, a memory, and the like. The control device 13 controls the operations of the conveyors 21 to 31 and the folding devices 41 to 45.

The numbers of the conveyors 21 to 31 (first, second, etc.) in the present embodiment are assigned for convenience of explanation and do not match the numbers of the conveyors described in the claims. The tenth conveyor 30 and the eleventh conveyor 31 of the present embodiment correspond to the first conveyor and the second conveyor described in the claims, respectively.

Further, the numbers (first, second, etc.) of the folding devices 41 to 45 in the present embodiment are assigned for convenience of explanation. The fifth folding device 45 of the present embodiment corresponds to the folding device described in the claims.

(How to fold cloth)
Next, a method of folding the cloth C by the cloth folding device 1 will be described.
As described above, the cloth folding device 1 can fold the cloth C by at least two kinds of folding methods, "32 folds" and "24 folds". The selection of the folding method for the supplied cloth C is performed by the control device 13. Hereinafter, they will be described in order.

(32 folds)
First, the case of 32 folds will be described with reference to FIGS. 3 to 5. In addition, (1) to (6) in FIGS. 3 to 5 correspond to (1) to (6) of the following description, respectively.

The spread cloth C0 is supplied one by one to the first conveyor 21 of the front stage portion 11 (see FIG. 1). While the cloth C0 is being conveyed by the first to third conveyors 21 to 23, the cloth C1 is folded in four by the first folding device 41 and the second folding device 42.
(1) Then, the cloth C1 folded in four is supplied to the fourth conveyor 24.

(2) As the folded plate 43a of the third folding device 43 advances downward, the cloth C1 has the central folding position L4 in the longitudinal direction toward the approach portion between the fifth conveyor 25 and the sixth conveyor 26. Is thrust. As a result, the cloth C1 is folded in half to become the cloth C2 in an eight-fold state. The cloth C2 in the eight-folded state is conveyed toward the lower seventh conveyor 27 while being sandwiched between the fifth conveyor 25 and the sixth conveyor 26.

(3) The seventh conveyor 27 is driven in the positive direction. Here, the "positive direction" is a direction in which the cloth C2 is conveyed toward the eighth conveyor 28 (right direction in FIG. 4). The cloth C2 in the eight-folded state is conveyed from the seventh conveyor 27 toward the eighth conveyor 28. At this time, the transfer plate 46 is in the closed state. Since the gap between the 7th conveyor 27 and the 8th conveyor 28 is closed, the cloth C2 can be transferred from the 7th conveyor 27 to the 8th conveyor 28. After the leading edge of the cloth C2 is transferred from the 7th conveyor 27 to the 8th conveyor 28, the transfer plate 46 is opened.

(4) When the central folding position L5 of the cloth C2 in the longitudinal direction reaches the approach portion between the 7th conveyor 27 and the 8th conveyor 28, the folded plate 44a of the 4th folding device 44 advances downward. do. Then, the cloth C2 is thrust at the folding position L5 toward the approach portion between the 7th conveyor 27 and the 8th conveyor 28. As a result, the cloth C2 is folded in half to become the cloth C3 in a 16-fold state. The 16-folded cloth C3 is conveyed downward by the 7th conveyor 27.

(5) The cloth C3 in the 16-folded state transfers from the 7th conveyor 27 to the 9th conveyor 29. The cloth C3 is conveyed toward the fifth folding device 45 by the ninth conveyor 29. The cloth C3 is conveyed to the downstream portion of the ninth conveyor 29.

(6) When the cloth C3 reaches the downstream portion of the ninth conveyor 29, the folded plate 45a of the fifth folding device 45 advances upward. Then, in the cloth C3, the central folding position L6 in the longitudinal direction is thrust toward the approach portion between the tenth conveyor 30 and the eleventh conveyor 31. As a result, the cloth C3 is folded in half to become the cloth C4 in a 32-fold state.

After that, the cloth C4 in the 32 folded state is transferred upward while being sandwiched between the 10th conveyor 30 and the 11th conveyor 31. Then, the cloth C4 is supplied to the laminated portion 50.

(24 folds)
Next, the case of 24 folds will be described with reference to FIGS. 6 to 8. In addition, (3) to (8) in FIGS. 6 to 8 correspond to (3) to (8) of the following description, respectively.

In the same procedure as in the case of (1) and (2) 32 folds, the stretched cloth C0 is folded up to the eight-folded cloth C2 (see FIG. 3).

(3) The cloth C2 in the eight-folded state is conveyed toward the lower seventh conveyor 27 while being sandwiched between the fifth conveyor 25 and the sixth conveyor 26. At this time, the cloth C2 hangs down from the end of the fifth conveyor 25 and is sent out in the hanging direction. Here, of the edges of the cloth C2, the edge in front of the fifth conveyor 25 in the transport direction is referred to as the leading edge F. That is, the fifth conveyor 25 causes the cloth C2 to hang down from the leading edge F and is sent out in the hanging direction.

The cloth C2 hanging from the fifth conveyor 25 is received by the seventh conveyor 27. The seventh conveyor 27 is driven in the "reverse direction" at the initial stage of receiving the cloth C2. Here, the "reverse direction" is the direction opposite to the "forward direction" (left direction in FIG. 6). The seventh conveyor 27 is driven in the opposite direction while receiving the front Ca and the center Cb of the cloth C2.

(4) When the folding position L8 at the boundary between the central portion Cb and the rear portion Cc of the cloth C2 reaches the seventh conveyor 27, the seventh conveyor 27 reverses the driving direction. That is, the seventh conveyor 27 is driven in the positive direction while receiving the rear Cc of the cloth C2. Due to the reversal of the driving direction of the seventh conveyor 27, the cloth C2 is folded so that the rear portion Cc overlaps the upper surface of the central portion Cb.

(5) The cloth C5 in a state where the rear Cc overlaps the central Cb is conveyed from the 7th conveyor 27 toward the 8th conveyor 28. At this time, the transfer plate 46 is in the closed state. After a part of the cloth C5 is transferred from the 7th conveyor 27 to the 8th conveyor 28, the transfer plate 46 is opened.

(6) When the central folding position L7 in the longitudinal direction of the cloth C5 reaches the approach portion between the 7th conveyor 27 and the 8th conveyor 28, the folded plate 44a of the 4th folding device 44 advances downward. do. Then, the cloth C5 is thrust at the folding position L7 toward the approach portion between the 7th conveyor 27 and the 8th conveyor 28. As a result, the cloth C5 is folded so that the front Ca overlaps the lower surface of the rear Cc.

The cloth C2 can be folded in three by reversing the driving direction of the seventh conveyor 27 in step (4) and folding the fourth folding device 44 in step (6). This completes the cloth C6 in a 24-fold state. The cloth C6 in the 24-folded state is conveyed downward by the seventh conveyor 27.

(7) The cloth C6 is transferred from the 7th conveyor 27 to the 9th conveyor 29. The cloth C6 is conveyed toward the fifth folding device 45 by the ninth conveyor 29. The cloth C6 is conveyed to the downstream portion of the ninth conveyor 29. Here, the folded plate 45a of the fifth folding device 45 stands by along the transport surface of the ninth conveyor 29. Therefore, the cloth C6 conveyed by the ninth conveyor 29 is in a state of being on the folded plate 45a.

(8) When the leading edge of the cloth C6 in the transport direction reaches the tip of the folded plate 45a, the folded plate 45a advances upward. Then, the cloth C6 is lifted by the folded plate 45a and guided to the tenth conveyor 30 from the leading edge in the transport direction. That is, the fifth folding device 45 operates the folded plate 45a and guides the cloth C6 to the tenth conveyor 30 without folding.

After that, the cloth C6 is transferred upward while being sandwiched between the 10th conveyor 30 and the 11th conveyor 31. Then, the cloth C6 is supplied to the laminated portion 50.

As described above, the operation of the fifth folding device 45 differs between the case of 32 folding and the case of 24 folding. Specifically, in the case of 32 folds, the fifth folding device 45 advances the folded plate 45a and folds the cloth C3 while pushing it into the approaching portions of the conveyors 30 and 31 (see FIG. 5). On the other hand, in the case of 24 folding, the fifth folding device 45 advances the folded plate 45a and guides the cloth C6 to the approaching portions of the conveyors 30 and 31 without folding (see FIG. 8).

(Fifth folding device)
Next, the details of the fifth folding device 45 in the final stage and the conveyors 29 to 31 arranged around the fifth folding device 45 will be described.
As shown in FIG. 9, the folded plate 45a of the fifth folding device 45 is fixed to the tip of the swivel arm 45b. The base end portion of the swivel arm 45b is pivotally supported by the support shaft 45c. The swivel arm 45b can swivel around the support shaft 45c. A sprocket 45d is fixed to the support shaft 45c.

The fifth folding device 45 has a servomotor 45e that swivels the swivel arm 45b. The output shaft of the servomotor 45e and the sprocket 45d are connected by an endless chain 45f or an endless belt. By rotating the servomotor 45e in the forward and reverse directions, the folded plate 45a can be rotated.

In addition to the servo motor 45e, a servo actuator such as a servo cylinder may be used as the actuator of the fifth folding device 45. Since the fifth folding device 45 is operated by the servo actuator, the position of the folded plate 45a can be arbitrarily adjusted. Further, an actuator other than the servo actuator such as an air cylinder may be used as the actuator of the fifth folding device 45.

The ninth conveyor 29 includes a plurality of rollers and a conveyor belt 29b wound around the plurality of rollers. The upper transport surface of the conveyor belt 29b is substantially horizontal. The cloth C is conveyed downstream (to the right in FIG. 9) while being placed on the upper transport surface of the conveyor belt 29b.

The tenth conveyor 30 includes a plurality of rollers and a first conveyor belt 30b wound around the plurality of rollers. Of the plurality of rollers constituting the tenth conveyor 30, the roller arranged at the start end of the tenth conveyor 30 is referred to as a first roller 30r. The eleventh conveyor 31 includes a plurality of rollers and a second conveyor belt 31b wound around the plurality of rollers. Of the plurality of rollers constituting the 11th conveyor 31, the roller arranged at the start end of the 11th conveyor 31 is referred to as a second roller 31r. The first roller 30r and the second roller 31r are arranged at positions facing each other. As a result, the approach portion 32 is formed.

The approach portion 32 between the tenth conveyor 30 and the eleventh conveyor 31 is directed diagonally downward. The tenth conveyor 30 and the eleventh conveyor 31 are driving the cloth C in the direction of entering the depth of the approach portion 32. Of the transport surface of the first conveyor belt 30b, the portion directly downstream of the first roller 30r faces diagonally upward. The cloth C that has entered the approaching portion 32 is conveyed to the back of the approaching portion 32 in a state of being placed on the inclined conveying surface of the first conveyor belt 30b.

The folded plate 45a of the fifth folding device 45 advances and retreats toward the approach portion 32. As shown by the solid line in FIG. 9, in the state where the folded plate 45a advances toward the approach portion 32 (hereinafter, referred to as “advanced state”), the tip portions of the folded plate 45a are the first roller 30r and the second roller. It is inserted between 31r. The position of the folded plate 45a in the forward state is referred to as a forward position. As shown by the two-dot chain line in FIG. 9, in the state where the folded plate 45a is retracted from the approach portion 32 (hereinafter, referred to as “retracted state”), the folded plate 45a is arranged along the upper transport surface of the conveyor belt 29b. Will be done. The position of the folded plate 45a in the retracted state is referred to as a retracted position.

The folded plate 45a turns between the retracted position and the forward position. At this time, the folded plate 45a moves in the approaching direction (vertical direction in FIG. 9) of the approaching portion 32, and moves back and forth toward the approaching portion 32. In addition to this, the folded plate 45a also moves in the alignment direction of the first roller 30r and the second roller 31r (left-right direction in FIG. 9), and approaches and separates from the first roller 30r. More specifically, the folded plate 45a approaches the first roller 30r as it turns from the retracted position to the forward position. Based on the retracted position, the larger the turning amount, the closer the folded plate 45a approaches the first roller 30r.

The fifth folding device 45 of the present embodiment has two different positions (hereinafter, referred to as "first forward position" and "second forward position", respectively) as positions of the folded plate 45a in the forward state, that is, forward positions. It has been set. FIG. 10 shows a state in which the folded plate 45a is arranged at the first forward position. Further, FIG. 11 shows a state in which the folded plate 45a is arranged at the second forward position.

The first forward position is a position where the folded plate 45a is separated from the first roller 30r. The second forward position is the position where the folded plate 45a approaches the first roller 30r. From the viewpoint of the turning amount based on the retracted position of the folded plate 45a, when the turning amount is small, the folded plate 45a is arranged in the first forward position, and when the turning amount is large, the folded plate 45a is arranged in the second forward position. Will be done. From the viewpoint of the amount of the folded plate 45a plunged into the approach portion 32, the folded plate 45a is arranged in the first forward position when the plunge amount is small, and the folded plate 45a is in the second forward position when the plunge amount is large. Is placed in.

The fifth folding device 45 has a first advancing / retreating operation for advancing / retreating the folded plate 45a between the first advancing position and the retreating position, and a second advancing / retreating operation for advancing / retreating the folded plate 45a between the second advancing position and the retreating position. Two types of operations, operation and operation, are possible.

As shown in FIG. 10, in the case of 32 folding, the fifth folding device 45 folds the cloth C3 in half. More specifically, the fifth folding device 45 advances the folded plate 45a upward and pushes the folded plate 45a into the approach portion 32 while folding the central folding position L6 of the cloth C3. At this time, the cloth C3 covers the tip of the folded plate 45a and is present on both the front and back surfaces of the folded plate 45a. Therefore, it is necessary to provide a gap for the cloth C3 to pass between the folded plate 45a and the first roller 30r, and between the folded plate 45a and the second roller 31r.

Therefore, when the cloth C3 is folded and pushed into the approach portion 32, the fifth folding device 45 performs the first forward / backward operation. Then, the folded plate 45a in the forward state is arranged at the first forward position away from the first roller 30r. As a result, an appropriate gap is secured between the folded plate 45a and the first roller 30r. As a result, the cloth C3 can be folded in half without applying an excessive load.

As shown in FIG. 11, in the case of 24 folding, the fifth folding device 45 advances the folded plate 45a and guides the cloth C6 to the tenth conveyor 30 without folding. At this time, the cloth C6 is in a state of being on the surface of the folded plate 45a. The cloth C6 does not come into contact with the back surface of the folded plate 45a.

Here, the first roller 30r is arranged on the front and back surfaces of the folded plate 45a on which the cloth C6 does not come into contact, that is, at a position facing the back surface. If the gap between the first roller 30r and the folded plate 45a arranged at this position is too large, the leading edge of the cloth C6 may fall off from the gap and may not be normally transferred to the tenth conveyor 30. Then, folding may fail, such as unnecessary creases on the cloth C6.

Therefore, when the cloth C6 is guided to the approach portion 32 without being folded, the fifth folding device 45 makes a second forward / backward operation. Then, the folded plate 45a in the forward state is arranged at the second forward position close to the first roller 30r. As a result, the gap between the folded plate 45a in the forward state and the first roller 30r becomes smaller. Since the folded plate 45a and the transport surface of the 10th conveyor 30 are in a continuous state, the cloth C6 can be normally transferred from the folded plate 45a to the 10th conveyor 30. As a result, the failure of folding the cloth C6 can be reduced.

The fifth folding device 45 switches between the first advancing / retreating operation and the second advancing / retreating operation according to the folding method of the cloth C. Therefore, the gap between the folded plate 45a in the forward state and the first roller 30r can be adjusted to an appropriate size according to the folding method of the cloth C. Therefore, it is possible to reduce the failure of folding the cloth C due to the gap.

1 Cloth folding device 29 9th conveyor 30 10th conveyor 30b 1st conveyor belt 30r 1st roller 31 11th conveyor 31b 2nd conveyor belt 31r 2nd roller 32 Entry part 45 5th folding device 45a Folding plate

Claims (2)

A first conveyor having a first roller around which the first conveyor belt is wound, and a first conveyor,
A second conveyor having a second roller around which the second conveyor belt is wound and arranged at a position facing the first roller, and a second conveyor.
A folding device having a folded plate that advances and retreats toward an entry portion between the first roller and the second roller.
The folding device has a first advancing / retreating operation in which the folded plate moves forward / backward between a first forward / backward position separated from the first roller and a second forward / backward position in which the folded plate approaches the first roller. It is possible to perform a second advancing / retreating operation between the above and the retreating position.
The folded plate also moves in the alignment direction of the first roller and the second roller as it advances and retreats to the approach portion.
The more the folded plate advances toward the approaching portion, the closer the folded plate approaches the first roller.
The first forward position and the second forward position are both positions where the tip of the folded plate is inserted between the first roller and the second roller.
The second forward position is a position closer to the first roller than the first forward position.
The first roller is arranged at a position facing the surface of the front and back surfaces of the folded plate that the cloth does not come into contact with when the cloth is guided to the approaching portion without breaking.
When the folded plate is advanced and the cloth is folded and pushed into the approaching portion, the folding device performs the first advancing / retreating operation.
When the folded plate is advanced to lead the cloth to the approaching portion without folding the cloth, the folding device performs the second advancing / retreating operation each time the cloth is guided . Device. The folding device is
With the folded plate
The swivel arm provided with the folded plate and
The cloth folding device according to claim 1, further comprising a servo actuator that swivels the swivel arm.

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