JPH08281000A - Apparatus for extending rectangular fabric piece - Google Patents

Abstract

PURPOSE: To surely extend a rectangular fabric piece delivered from a delivery conveyer on a placing stage. CONSTITUTION: An apparatus for extending a rectangular fabric piece is provided with a delivery conveyer 133 for delivering the rectangular fabric piece such as a sheet and a press roller 4 rocking between a pressing position where one end of the fabric piece is hung by means of the delivery conveyer 133 and a waiting position while the fabric piece delivered from the delivering side end part of the delivery conveyer 133 is pressed between the delivery conveyer 133 and the press roller 4. The apparatus consists of a driving means for rocking the press roll 4 and a rotation providing means for rotating the press roller 4 in the opposite direction to the rotating direction of the delivery conveyer 133.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for spreading a rectangular cloth piece such as a sheet after dewatering for spreading and sending it to the next ironing step or the like.

[0002]

2. Description of the Related Art Conventionally, as a device for gripping one edge of a rectangular cloth and pulling it on a mounting table to deploy one side of the cloth, Japanese Patent Application No. 2-125379 filed by the applicant of the present application. It is proposed by the specification attached to the application, which will be described with reference to FIGS. FIG. 5 is a perspective view showing the entire sheet developing device.

In the figure, the sheets 101 are manually inserted.
Of the sheet C1 shown in FIG. 9 and one edge Ya including the corner C1 are attached to the gripping tool 102 without sagging at a shoulder width.
Let 3 hold it. The gripping tool 102 travels in the guide rail 105 by four wheels 104, engages a chain 106 with a hook provided at the upper portion, and can be driven through the chain 106 by a chain driving means (not shown). You can do it. The chain 106 may be another power transmission means such as a timing belt. Further, the gripper 102 can be disengaged from the chain 106 and can freely travel on the inclined guide rail.

The gripping tool 102, on which the sheet 101 is suspended, is driven by the chain 106 to move on the guide rail 105, and enters the deploying device in the direction of arrow B. The sheet 101 is placed on the mounting table 10 while the convex front edge portion 107 is being expanded.
8 is pulled on. Further, the gripper 102 is mounted on the mounting table 108.
The sheet 101 is released by the clip grip release mechanism 109 at the position where the side Yb of the sheet 101 has finished riding on the mounting table 108 as it goes up. That is, the clip grip release mechanism 1
At 09, the pneumatic actuator 110 is actuated, the lever 111 rotates, and the push plate 112 pushes the release arm 103a of the clip 103 to release the sheet as described above.

FIG. 6 is a perspective view showing the structure of the mounting table 108. A large number of flat belts 117 hung on a pulley 116 which is intermittently driven by a motor 115 supported by the frames 113 and 114 on both sides. Is the table 10
8 is the main part. The flat belt 117 may have a large number of small holes all over the surface, or may be a coarse mesh net belt through which air can easily pass. The mounting table 1
The central portion of 08 may be a belt without holes.

A suction duct 118 is attached over the entire width of the mounting table 108 in contact with the inner surface of the flat belt 117. The duct 118 has a large number of small holes 119 formed on its upper surface, that is, the surface in contact with the flat belt 117. ing. In addition, this small hole 1 corresponds to the flat belt 117 described above.
19 may not be provided in the central portion of the suction duct 118. On the other hand, the photoelectric sensor 120 is attached above the frame 113.
It is a sensor that detects passage of the terminal side Yc of the sheet 101. The signal generated by this sensor 120 is used as a control device 121.
Sent to and processed.

FIG. 7 is a plan view of the mounting table 108 and shows the position of the sheet 101 that is pulled in and placed and the relative position of the suction holes 119 of the suction duct 118. As shown in FIG. The range where the suction of 118 is effective is a portion indicated by E and F which is half of the orbital surface of the drawn sheet 101 and is divided into the side Yb side of the sheet 101 and the front and rear in the traveling direction of the sheet 101. It should be noted that the suction area may be the entire length of the raceway surface, but at this time, the pull-in resistance of the sheet 101 becomes excessive. The suction duct 118 is connected to the suction blower 124 by a pipe 123.

FIG. 8 is a sectional view of the expanding device. Here, the structure of the full-face unfolding mechanism of the sheet 101 will be described with reference to FIGS. 5 and 8, in which the pressing roller 125 is provided at the exit portion of the conveyor constituted by the flat belt 117 of the mounting table 108.
The roller 125 is rotated about the shaft 127 by the operation of the pneumatic actuator 126, and can press or separate the flat belt 117 against the flat belt 117.

Further, a vacuum type air spreader 128 is attached to the frames 113 and 114, and the air spreader 128 has a downwardly convex spread plate 128 at its front edge.
a is provided, and the sheet 101 is a suction slit 1 directed downward.
It is sucked by 28b so that the action of the convex spreading plate 128a can be sufficiently exerted. Air spreader 12
8 is also connected to the suction blower 130 by a pipe 129.

On the other hand, on the lower side of the mounting table 108, a friction roller 132 constantly driven by the same motor 131,
Feeding conveyor 13 for sheets 101 running diagonally downward
3 is provided. Also, 134 is a frame 113, 1
The take-up bar is guided by a guide 135 attached to the guide 14. The take-up bar 134 is intermittently driven by a chain (not shown) and a link mechanism (not shown) that connects one part of the chain and the take-up bar 134. It is guided by the guide 135 and reciprocates.

Next, the operation of the conventional example configured as described above will be described. The corner end C1 and one end side Y of the sheet 101 are described.
When a is gripped by the clip 103 of the gripper 102 and is pulled in on the mounting table 108 while being contacted by the convex front edge portion 107, if the suction force is not acting, the sheet 101 The edge Yb is pushed by the other part of the sheet 101, and the entire shape of the sheet 101 becomes wider.

However, by providing the suction duct 118 as in this conventional example, the edge Yb of the sheet 101 is provided.
Is sucked at the portion E shown in FIG. 7 and the frictional resistance of this portion increases, so that the edge Yb can be withdrawn straight and always with tension. F on the mounting table 108
The suction portion indicated by is effective for maintaining the state in which the edge Yb is kept taut when the sheet 101 is released from the clip 103 of the grasping tool 102 and placed on the mounting table 108. If the suction portion F is not provided, the edge Yb of the sheet 101 is contracted at the same time as being released from the clip 103, and wrinkles are likely to occur.

The sheet 101 is the clip 1 of the gripper 102.
When the photoelectric sensor 120 is gripped by the gripper 03 and enters the mounting table 108, the photoelectric sensor 120 is held by the edge Yc of the gripper 102 and the sheet 101.
Is detected, a signal is sent to the control device 121, and the control device 1
21, the edge Yc of the gripper 102 and the sheet 101
The timing of the centering of the sheet 101 with respect to the mounting table 108 from the transfer timing of the gripping tool 102 and the transfer speed of the gripping tool 102 to operate the pneumatic actuator 110,
The sheet grip 101 is operated by operating the clip grip release mechanism 109.
Is released from the clip 103. The sheet 101 placed on the placing table 108 moves in the direction of arrow C by the flat belt 117 driven by the motor 115, and stops at a position where the edge Yb reaches the front side of the pressing roller 125. Sheets 101
The other portion of the flat belt 117 freely hangs downward from the end of the flat belt 117. (The position of the sheet 101 shown by the chain double-dashed line in FIG. 8).

Next, the take-in bar 134 is activated to push the sheet 101 onto the friction roller 132 and the delivery conveyor 133 (see the sheet 1 shown by the broken line in FIG. 8).
01 position), the sheet 101 is stretched and spread by the air spreader 128 and the friction roller 132, and is sent to the ironer 135 in the next step by the sending-out conveyor 133.

[0015]

In this case, the flat belt 1
The sheet 101 moved in the direction of arrow C at 17 stops with its edge Yb positioned in front of the pressing roller 125, and at this position, the pneumatic actuator 126.
Is activated, the sheet 101 is pressed against the flat belt 117 by the press roller 125, and the press roller 125 is synchronously rotated together with the flat belt 117 in a rotating state.
The other part of the sheet 101 hangs freely from the end of the flat belt 117. (Sheet 1 shown by the chain double-dashed line in FIG. 8)
Position 01).

In this state, since the pressing roller 125 is a free roll, the target linen such as the sheet 101 may be sandwiched between the pressing roller 125 and the flat belt 117 while the pressing roller 125 is stopped or reversed. In this case, there is a drawback that the posture of the target linen may be collapsed or double pinching may occur, which may deteriorate the developed shape of the linen or may fail to develop the linen.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a spreading device for a rectangular cloth piece which can further ensure the spreading of the target linen at the conveyor outlet portion which is a flat belt of the mounting table.

[0018]

DISCLOSURE OF THE INVENTION According to the present invention, a cloth conveyer for feeding out a rectangular cloth piece such as a sheet and a cloth piece while pressing the cloth piece fed out from the end of the feed-out conveyor on the sending side are pressed. Of a rectangular cloth piece having a pressing roller that oscillates one end of the pressing roller from a conveyor and a pressing roller that oscillates between a standby position, and a driving unit that oscillates the pressing roller, and the pressing roller by the driving unit. Is provided with rotation applying means for rotating the pressing roller in a direction opposite to the rotation direction of the feed-out conveyor when swinging from the standby position to the pressing position.

A rotation imparting means comprising a timing pulley integrally provided at an end portion of the pressing roller, a timing belt meshing with the timing pulley at a standby position, and a tensioner for constantly applying tension to the timing belt is provided. Characterize. Further, it has a rotation imparting means including a friction roller integrally provided at an end portion of the pressing roller, a friction belt which comes into contact with the friction roller at a standby position, and a tensioner which constantly applies tension to the friction belt. And

Further, the rotation applying means is provided at each end of the pressing roller. Further, the outer periphery of the pressing roller is covered with an elastic member.

[0021]

In the spreading device for a rectangular cloth piece configured as described above, when the cloth piece is pressed by the pressing roller at the conveyor end of the mounting table, the pressing roller is positively rotated in the direction along with the feed-out conveyor. Therefore, even if it is in the double-sandwiched state, the cloth piece can be deployed with the double-sandwiched wrinkles unraveled without sagging while leaving the double-sandwiched wrinkles.

As a result, unsuccessful deployment of the cloth piece is reduced,
The work of re-inserting the cloth pieces into the expanding device is reduced, and the productivity of expanding the cloth pieces can be significantly improved.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the construction of the first embodiment of the present invention will be described with reference to FIGS. In this case, the structure of the unfolding device itself excluding the pressing roller and its driving portion is the same as that of the above-mentioned conventional example, and therefore the description thereof is omitted, and the pressing roller and its driving portion will be described. Left and right frames 113, 1 of the mounting table 108
The left and right upper frames 7, 7 are fixed to 14 and an air cylinder is rotatably supported on each of the upper frames 7. The rod side of the air cylinder 1 is also rotatably supported on the upper frame 7 by a shaft 2. Is connected to a swing arm 3. At the tip of a swing arm 3 which reciprocates about a shaft 2 by a reciprocating motion of the air cylinder 1, a pressing roller 4 covered with an elastic body such as rubber is provided with a shaft 5 integrated with the pressing roller 4. It is mounted so that it can rotate freely around the center. The pressing roller 4 has a sponge tape wound around the outer circumference of the metal core body 4a in a spiral shape, and then the vinyl tape 4b is wound in a spiral shape opposite to the sponge tape to make the outer circumference elastic.

On the other hand, a timing pulley 6 is integrally attached to one end of the shaft 5 of the pressing roller 4. A timing belt 9 is attached in a tension state via a guide 51 of an arm 50 of a known tensioner 8 attached to the upper frame 7 and a guide 52 fixed to a frame 113. The timing belt 9 has a toothed surface outside and a guide 51 provided at the tip of an arm 50 of the tensioner 8 (which is always biased counterclockwise in FIG. 3) and a guide fixed to the frame 7. Between 52, the two-dot chain line in FIG. 3 stands by. (The air cylinder 1 is also at the position indicated by the chain double-dashed line.) Therefore, the forward movement of the air cylinder 1 causes the pressing roller 4 to move.
3 moves from the release position indicated by G in FIG. 3 to the pressing position indicated by H in FIG. 3, when the pressing roller 4 is pressed against the feed-out conveyor 133 by the rotation of the timing pulley 6 on the timing belt 9, Rotate positively in the direction of arrow 3.

A friction roller 53 is integrally fixed to the other end of the pressing roller 4 and can be engaged similarly to the friction belt 54 instead of the timing belt 9, and the pressing roller 54 is positively driven by the thrust of the air cylinder 1. To rotate. Next, the operation of this embodiment will be described. Sheet 10 which is a rectangular piece of cloth configured in this way
In the case of the unfolding device 14 of No. 1, the pressing roller 4 is moved by the operation of the air cylinder 1, and the mounting table 1 is moved by the pressing roller 4.
When the sheet 101 is pressed by the end of the delivery conveyor 133 of 08, the pressing roller 4 is positively rotated in the opposite direction to the delivery conveyor 133 by the timing pulley 6 and the timing belt 9 before being pressed against the delivery conveyor 133.

Therefore, as shown in FIG. 4 (a), even in the double-sandwiched state, the sheet 101 does not hang down with the double-sandwiched wrinkles 15 left, and the double-sandwiched wrinkles 1
It can be deployed with 5 loosened. At this time, even if there is some unevenness on the conveyor side due to the wrinkles 15 or the like, it can be absorbed by an elastic body such as a sponge tape. As a result, unsuccessful expansion of the sheets 101 is reduced, and the work of re-inserting the sheets 101 in the expansion device 14 is reduced, so that the productivity of expanding the sheets is significantly improved.

The combination of the timing pulley and the friction pulley has been described above, but the same action and effect can be obtained when both timing pulleys or both friction pulleys are friction pulleys.

[0028]

As described above, according to the present invention, when the rectangular cloth piece of the target linen is pressed by the pressing roller at the conveyor exit portion formed by the flat belt of the mounting table, it is positively rotated in the direction of rotation with the feed-out conveyor. By holding while
There is an effect that the expansion of the rectangular cloth piece can be further ensured.

[Brief description of drawings]

FIG. 1 is a perspective view of a pressing roller according to an embodiment of the present invention.

FIG. 2 is a partially cutaway front view of FIG.

FIG. 3 is a side view taken along the line AA of FIG.

FIG. 4 is an operation explanatory diagram of FIG. 1;

FIG. 5 is an overall perspective view of a conventional example.

6 is a perspective view of the mounting table in FIG.

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is a side view of FIG.

FIG. 9 is a development view of the sheets.

[Explanation of symbols]

 1 Air Cylinder 3 Oscillating Arm 4 Pressing Roller 6 Timing Pulley 8 Tensioner 9 Timing Belt 53 Friction Roller 54 Friction Belt 108 Mounting Table 133 Feeding Conveyor

Claims (5)

[Claims] 1. A feeding conveyor for feeding a rectangular cloth piece such as a sheet, and one end of the cloth hanging down from the feeding conveyor while pressing the cloth piece fed from the end of the feeding side of the feeding conveyor between the feeding conveyor. In a device for deploying a rectangular cloth piece having a pressing roller for rocking between a pressing position and a standby position, a driving means for rocking the pressing roller, and the pressing roller from the standby position to the pressing position by the driving means. A device for expanding a rectangular cloth piece, comprising: a rotation imparting unit that rotates the pressing roller in a direction opposite to a rotation direction of the feed-out conveyor when swinging. 2. A rotation imparting means including a timing pulley integrally provided at an end portion of the pressing roller, a timing belt meshing with the timing pulley at a standby position, and a tensioner that constantly applies tension to the timing belt. The device for deploying a rectangular cloth piece according to claim 1. 3. A rotation imparting means including a friction roller integrally provided at an end portion of the pressing roller, a friction belt that comes into contact with the friction roller at a standby position, and a tensioner that constantly applies tension to the friction belt. The apparatus for deploying a rectangular cloth piece according to claim 1. 4. The device for deploying a rectangular cloth piece according to claim 1, wherein the rotation imparting means is provided at each end of the pressing roller. 5. The spreading device for a rectangular cloth piece according to claim 1, wherein the outer circumference of the pressing roller is covered with an elastic member.