WO2016047024A1

WO2016047024A1 - Square fabric spreading apparatus

Info

Publication number: WO2016047024A1
Application number: PCT/JP2015/004003
Authority: WO
Inventors: 弘幸出上
Original assignee: 株式会社プレックス
Priority date: 2014-09-22
Filing date: 2015-08-10
Publication date: 2016-03-31
Also published as: JP2016059754A

Abstract

Provided is a square fabric spreading apparatus such that opening and closing operations in a suction mechanism are made faster, suction efficiency is improved, and wear is less likely to occur. The square fabric spreading apparatus comprises: a stretching device that pulls and stretches an upper edge of a square fabric laterally; a passing device that holds the upper edge of the stretched square fabric in an advanced position and retracts so as to pass the same to a vacuum conveyor (60); a suction duct (61) that creates a negative pressure in the vacuum conveyor (60); a shaping duct (65) that sucks the lower part of the square fabric held in the advanced position downward; a flow channel switching chamber (66) that is interposed between a blower (62) and the suction duct (61) and shaping duct (65); and a damper (67) that switches flow channels in the flow channel switching chamber (66), the switching operation of the damper (67) being controlled by a motor. Compared with the prior art, operating time is reduced, suction efficiency of the suction mechanism is improved, and shaping, such as dewrinkling, of square fabrics and feeding with the conveyor (60) can be performed reliably.

Description

Square shape cloth unfolding device

The present invention relates to a rectangular cloth unfolding apparatus. More specifically, the present invention relates to a rectangular cloth unfolding apparatus for unfolding rectangular cloth such as washed sheets into a square and supplying it to a next process apparatus such as a press or a folding machine.

A large amount of sheets are used in hotels and hospitals, and the used sheets are generally washed and ironed in a laundry factory and used again in hotels and hospitals.
In a laundry factory, a rectangular cloth having a relatively large size such as a sheet is washed and then pressed by a press machine or folded by a folding machine. In order to supply rectangular fabrics to these processing apparatuses, it is necessary to develop the rectangular fabrics into a square shape in advance.
When a worker performs an operation of expanding a rectangular cloth into a quadrangle, a great amount of time and labor is required for the operation, and in recent years, this operation is performed by an expansion device that automatically performs this operation.

The conventional deployment device described in Patent Document 1 is generally configured as follows.
Grab one side of the square cloth with the traverse chuck and pull it onto the belt conveyor, drive the belt conveyor to hang the square cloth down the front of the device, and use another extension chuck to width the square cloth Hold both ends in the direction and hang by pulling. In order to draw and discharge the rectangular cloth from this state into the device, the upper edge of the suspended rectangular cloth is grasped, and the lower edge is air-sucked downward to prevent dripping or wrinkles. To. As a suction mechanism for this purpose, a blower 162 and a shaping duct 165 are provided. Then, the rectangular cloth is moved toward the inside of the developing device, placed on the vacuum conveyor, and carried out in the discharging direction.

A conventional example of the suction mechanism will be described with reference to FIG. P <b> 1 indicates an initial position where the rectangular cloth Y (shown by a dotted line) is held by the delivery device 151. The rectangular cloth Y at this time hangs down on the front surface of the developing device. When air in the shaping duct 165 is sucked in this state, the rectangular cloth Y gets over the front plate 164 of the shaping duct 165 and hangs into the shaping duct 165. This state is indicated by reference numeral P2, and when the air in the shaping duct 165 is further sucked by the blower 162, the rectangular cloth Y extends in the vertical direction and is free of wrinkles.

Thereafter, the delivery device 151 is moved backward to transfer the rectangular cloth Y onto the vacuum conveyor 160. The rectangular cloth Y transferred to the vacuum conveyor 160 is transferred in the direction of the discharge conveyor 170 by driving the vacuum conveyor 160, and is processed from the discharge conveyor 170 at the rear of the rectangular cloth unfolding apparatus A. Supplied to a device (not shown).

However, the prior art suction device has the following problems.
Although the suction of the shaping duct 165 and the suction duct 161 are performed by one blower 162, the switching is performed by opening and closing the opening of the flow path switching chamber by swinging the damper 167.
The swinging motion of the damper 167 is performed by the air cylinder 168. In this air cylinder drive, since the pressure medium uses volume-expandable air, it takes time to perform the open-standby-close operation.

And if it takes time to repeat the opening, waiting, and closing, the suction efficiency is lowered.
Further, as an operating characteristic of the air cylinder, the speed at the end of operation is faster than that during operation. Then, there is a defect that the damper 167 collides with the opening and generates a loud noise or accelerates wear.

JP 2011-30743 A

In view of the above circumstances, an object of the present invention is to provide a rectangular cloth unfolding device that speeds up opening and closing operations in a suction mechanism to increase suction efficiency and hardly cause wear.

A rectangular cloth unfolding device according to a first aspect of the present invention is a rectangular cloth unfolding device that unfolds a rectangular cloth into a quadrilateral and supplies it to a vacuum conveyor. An extension mechanism that holds the upper edge of the elongated rectangular cloth in a forward position, and a reverse mechanism that forwards and delivers the vacuum cloth to the vacuum conveyor, a suction duct that generates a negative pressure in the vacuum conveyor, and the forward A shaping duct for sucking downward a lower portion of the rectangular cloth held in position, the flow duct switching chamber interposed between the shaping duct and the air suction machine, and the flow path switching. And a damper for switching the flow path of the chamber, and the switching operation of the damper is controlled by an electric actuator.
The square-shaped cloth unfolding device according to a second aspect of the present invention is the first aspect, wherein the electric actuator is a motor, the damper is supported by a rotating shaft, a wheel fixed to the rotating shaft, and the motor A rope is wound around the output shaft wheel.
A square-shaped cloth unfolding device according to a third aspect of the present invention is characterized in that, in the first aspect, the electric actuator is a motor, and the rotary shaft of the damper and the output shaft of the motor are connected by a link. .
The square-shaped cloth unfolding device according to a fourth aspect of the present invention is characterized in that, in the second or third aspect, the motor is a servo motor.

According to the first invention, since the operation of the damper that switches the flow path in the flow path switching chamber is controlled by the electric actuator, the operation time is shorter than that of the prior art. For this reason, the suction efficiency of the suction mechanism is increased, and shaping such as staking of rectangular cloths and feeding with a vacuum conveyor can be performed reliably.
According to the second invention, since the damper and the motor are connected by the rope, the installation location of the motor can be arbitrarily selected, and the entire deployment device can be made compact.
According to the third invention, the forward / reverse rotation of the motor can be converted into the opening / closing operation of the damper by the link.
According to the fourth aspect of the invention, the speed controllability of the servo motor can delay the closing time while speeding up the opening / closing operation of the damper, so that the noise caused by the damper collision can be reduced and the wear can be hardly caused.

It is a side view of the expansion | deployment apparatus which concerns on one Embodiment of this invention. It is a top view of the expansion | deployment apparatus of FIG. It is a front view of the expansion | deployment apparatus of FIG. It is explanatory drawing of the damper drive device in a suction mechanism. It is explanatory drawing of a delivery process. It is explanatory drawing of an air spraying process. It is explanatory drawing of a wrinkle removal process. It is explanatory drawing of a sending process. It is explanatory drawing of a discharge process. It is explanatory drawing of square-shaped cloth. It is explanatory drawing of the conventional expansion | deployment apparatus.

Next, an embodiment of the present invention will be described with reference to the drawings.
The square-shaped cloth unfolding apparatus according to the present invention is an apparatus for unfolding a rectangular large cloth, such as a washed sheet, and supplying it to the next process apparatus.

Each part of the rectangular cloth Y to be processed by the rectangular cloth developing apparatus of the present invention is defined. As shown in FIG. 10, one corner of the rectangular cloth Y is a corner C1, the edge adjacent to the corner C1 is the edge Ya and the edge Yb, and the other corner of the edge Yb is the corner C2. To do. The edge facing the edge Ya is the edge Yc, and the edge facing the edge Yb is the edge Yd. In FIG. 10, the long side of the rectangular cloth Y is the edge Yb, but the edge Ya may be the long side.
Further, the front / rear, left / right, and up / down directions of the rectangular cloth unfolding apparatus A are defined as shown in FIGS.

In the rectangular cloth unfolding apparatus A according to one embodiment of the present invention, an edging process for extending the edge Yb of the rectangular cloth Y in a straight line, and unfolding that unfolds the entire rectangular cloth Y into a rectangular shape A process, a wrinkle process for the developed square cloth Y, a delivery process for delivering the square cloth Y after the scooping to the next process apparatus, and a subsequent discharge process are performed.

Next, the basic configuration of the rectangular cloth unfolding apparatus A will be described together with the operation.
2 and 3, the stacking table 10 is a table for performing the edging of the square-shaped cloth Y and transporting the square-shaped cloth Y after the edging forward, and is configured by the loading conveyor 11. Yes. The stacking conveyor 11 includes a plurality of belts 11A to 11G, and the rectangular cloth Y can be fed forward by these belts. The loading table 10 is longer than the long side of the rectangular cloth Y to be processed.

In the developing device A of the present embodiment, the cloth is supplied from the side shown in FIGS. The cloth may be supplied from both the left and right sides, or from the left or right side. Further, the supply method may be performed manually from the nearest place of the machine, or may be supplied from a remote place via a conveying means.

In order to perform the edging process, a first traverse chuck 20R and a second traverse chuck 20L that are movable in the left-right direction are provided above the loading table 10. In order to perform this edging step, when the cloth is supplied from the right side of the apparatus, the rectangular cloth Y is transferred to the first traverse chuck 20R, and the first traverse chuck 20R is in the corner C1 of the square cloth Y. And by moving the upper side of the loading table 10 in the left-right direction while holding the edge Ya. When supplying cloth from the left side of the apparatus, the same pulling operation is performed using the second traverse chuck 20L. After completion of the edging process, the edge Yb of the rectangular cloth Y is stretched in a straight line, and the edge Yb faces rearward and is placed on the stacking table 10. The present invention includes a case where only one traverse chuck is used and cloth is drawn from either the left or right side of the loading table 10.

In order to perform the unfolding process, a pair of extension chucks 40R and 40L that are movable in the left-right direction are provided at the front end of the loading table 10. In order to perform this unfolding process, the square-shaped cloth Y after the edging is transferred forward on the loading table 10 and the rectangular cloth Y is suspended. Next, the corners C1 and C2 of the rectangular cloth Y are held by the extension chucks 40R and 40L, and are extended in the left-right direction so as to be developed into a square shape. In this way, the rectangular cloth Y is developed into a quadrangle. These extension chucks 40R and 40L constitute an extension mechanism.

整形 A shaping duct 65 and a suction mechanism are provided to perform the scraping process. In order to perform the wrinkle removal step, the upper edge Yb of the rectangular cloth Y is held by a delivery mechanism 50 described later, and the squares C1 and C2 are held by the extension chucks 40R and 40L together with the square shape. Suction downward to the lower part of the fabric Y. Details will be described later.

In order to perform a delivery process, the delivery mechanism 50 and the vacuum conveyor 60 are provided, and the discharge conveyor 70 is provided in order to perform a discharge process.
In order to perform the delivery step, the upper edge Yb of the square cloth Y is held by the delivery mechanism 50, and the square cloth Y is transferred to the vacuum conveyor 60 by the movement of the delivery mechanism 50. The discharge process is performed by driving the vacuum conveyor 60 and the discharge conveyor 70, and discharges the rectangular cloth Y developed in a square shape to the next process apparatus installed at the rear.

Next, each device that performs the delivery process will be described in detail.
The delivery mechanism 50 receives the upper edge Yb of the rectangular fabric Y from the extension chucks 40R and 40L and delivers it to the vacuum conveyor 60.
As shown in FIG. 1, the delivery mechanism 50 is provided below the stacking conveyor 11 and includes a suction box 51 and a driving device 52 that moves the suction box 51 in the front-rear direction. The suction box 51 has the same length as the stacking conveyor 11 in the left-right direction. Further, a small hole for suction is formed on the upper surface, and the upper edge Yb of the rectangular cloth Y can be sucked by sucking the air in the suction box 51 with an appropriate suction machine. It has become.

The vacuum conveyor 60 receives the edge Yb of the rectangular cloth part Y from the delivery mechanism 50 and transfers the rectangular cloth part Y to the discharge conveyor 70.
As shown in FIG. 1, the vacuum conveyor 60 is provided below the delivery mechanism 50. A large number of small holes are provided on the surface of the vacuum conveyor 60, and a suction duct 61 for applying a negative pressure to the small holes is connected.

Furthermore, the apparatus which performs a scraping process is explained in full detail.
In front of the suction duct 61, a shaping duct 65 used in the delivery process is provided. The shaping duct 65 includes a wall surface of the suction duct 61 and a front wall 64 standing in front of the suction duct 61.

A common air suction mechanism is connected to the suction duct 61 and the shaping duct 65.
As shown in FIGS. 1 and 4, the air suction mechanism includes a blower 62 and a flow path switching chamber 66. An opening 66a and an opening 66b are formed in the flow path switching chamber 66, and a damper 67 swings between them to open and close the

openings

66a and 66b.

When the damper 67 closes the opening 66b, the opening 66a opens and communicates with the suction duct 61 to suck air. In this case, the cloth on the vacuum conveyor 60 is conveyed by the conveyor while being sucked onto the conveyor.
When the damper 67 closes the opening 66a, the opening 66b opens and communicates with the shaping duct 65 to suck air. In this case, the sagging cloth Y held by the extension chucks 40R and 40L and the delivery mechanism 50 is pulled downward to correct the folded state and to remove wrinkles.

As shown in FIGS. 1 to 3, the developing device shown in the figure is provided with an air blowing device 90. The air spraying device 90 is constituted by a pipe 91 that injects compressed air. An air pressure source such as a compressor is connected to the pipe 91, and a valve (not shown) is interposed between the pipe 91 and the air pressure source so that air can be injected at a necessary timing.

As shown in FIG. 1, an appropriate number of injection holes 92 are formed in the pipe 91. The region where air is injected from the injection hole 92 is immediately above the shaping duct 65 in the rectangular cloth Y suspended from the delivery mechanism 50. In this way, air is blown toward the upper part of the shaping duct so that the rectangular cloth Y can be easily pushed into the shaping duct 65.

Further, as shown in FIG. 2 and FIG. 3, there are two areas where air is injected in the rectangular cloth Y, which are separated in the width direction. As described above, air is blown to two places separated in the width direction of the rectangular cloth Y, so that the rectangular cloth Y can be easily pushed into the shaping duct 65 even if the dimension of the rectangular cloth Y is large.

Next, features of the present invention in the suction device will be described.
4, the suction duct 61, the shaping duct 65, the flow path switching chamber 66, the damper 67, and the

openings

66a and 66b are substantially the same as those described in FIG. In addition, 69a is a shock absorbing material attached around the

opening

66a, and 69b is a shock absorbing material attached around the opening 66b.

As an actuator for operating the damper 67, an electric actuator capable of speed and position control is used.
Examples of electric actuators capable of speed and position control include motors, electric cylinders, and linear motors.
As the motor, a servo motor or a stepping motor can be used.

If a servo motor is used, it is possible to easily control the strength of suction by changing the opening angle of the damper 67, or to perform variable control such that the suction is strengthened at the beginning and the suction is weakened at the end.

When a motor is used for the electric actuator, the power transmission mechanism is configured as follows, for example.
A base portion of the damper 67 is attached to a rotating shaft 87, and a wheel 88 is fixed to the rotating shaft 87.
On the other hand, a wheel 81 is fixed to the output shaft of the motor 80. Between the wheel 81 and the wheel 88, a rope such as a chain or a timing belt is wound.
Therefore, when the forward / reverse rotation and stop of the motor 80 are controlled, the damper 67 can be switched to open-standby-close.

When the motor 80 is used, the opening / closing operation of the damper 67 is accelerated.
In this case, since the time during which the open state or the closed state is maintained is longer than that in the prior art, the suction efficiency is increased.

Further, when the rotational speed is controlled by the motor 80, the terminal speed can be slowed even if the operation is accelerated, so that the collision speed with the

openings

66a and 66b of the damper 67 is small, noise is reduced, and wear is also reduced. Less.

Furthermore, in the present embodiment, since the damper and the motor are connected by a rope, the installation location of the motor can be arbitrarily selected, and the entire deployment device can be made compact. In FIG. 4, the motor 80 is illustrated below the flow path switching chamber 66, but actually, it is installed at an arbitrary location inside the developing device.

Next, details of the scraping process and the delivery process will be described with reference to FIGS.
(1) In FIG. 5, the extension chucks 40R and 40L hold both ends of the rectangular cloth Y, and the upper edge Yb is held between the suction box 51 and the pressing bar 53 as a fixing member. At this time, the rectangular cloth Y is suspended from the front wall 64 of the shaping duct 65 in front.

(2) In the state (1), the damper 67 closes the opening 66 a and opens the opening 66 b, so that the blower 62 sucks air in the shaping duct 65. In addition, as shown in FIG. 6, air is jetted from the air blowing device 90 onto the rectangular cloth Y, and the rectangular cloth Y is pushed into the shaping duct 65. The lower part of the rectangular cloth Y is sucked into the shaping duct 65 and tries to enter the duct. However, the lower part of the rectangular cloth Y is added with the wind pressure by the air jet from the air blowing device 90. Is pushed above the shaping duct 65.

(3) As shown in FIG. 7, since the lower part of the rectangular cloth Y enters the shaping duct 65, if the air is sucked by the blower 62 as it is, the rectangular cloth Y is pulled downward and loosened. I can get a habit. This is the wrinkle removal process.

(4) Next, when the extension chucks 40R and 40L are released and the suction box 51 adsorbing the upper edge Yb of the rectangular cloth Y moves backward as shown in FIG. 8, the rectangular cloth Y is vacuumed. Contact the conveyor 60. When the damper 67 closes the opening 66b and opens the opening 66a in accordance with this state, the air in the suction duct 61 is sucked by the blower 62, and a negative pressure acts on the vacuum conveyor 60. Then, the rectangular cloth Y is held by suction of the vacuum conveyor 60 and is transferred from the delivery mechanism 50 to the vacuum conveyor 60.

Further, as shown in FIG. 9, the vacuum conveyor 60 is driven rearward, and the transferred square cloth Y is transferred to the discharge conveyor 70. The discharge conveyor 70 supplies the square-shaped cloth Y developed in a square shape to the processing device of the next process installed behind.

The damper 67 is switched between the above (1) to (3) and (4), and the switching operation is performed by the motor 80. As a result, the switching operation time of the damper 67 is shortened as described above, and the suction efficiency of the

ducts

61 and 65 is increased.

(Other embodiments)
In the said embodiment, between the motor 80 and the damper 67 was connected with the rope, However, You may change this to the structure using a link.
Specifically, the rotation shaft 87 of the damper 67 and the output shaft of the motor 80 can be connected by a link, and the forward / reverse rotation of the motor 80 can be converted into the opening / closing movement of the damper 67.

The rectangular cloth unfolding apparatus according to the present invention is used for unfolding sheets that have been washed mainly in a laundry factory and supplying them to a processing apparatus such as a rotary roll cloth press or a conveyor cloth folding machine. Is done. In addition to sheets, it is used for developing rectangular cloth such as wrapping cloth, mattress, and quilting cloth.

Y-shaped cloth A A-shaped cloth developing device 10 Loading table 11 Loading conveyor 11A to 11G Belt 20R First traverse chuck 20L Second traverse chuck 40R, L Extension chuck 50 Delivery mechanism 51 Adsorption box 52 Drive device 60 Vacuum conveyor 61 Suction duct 62 Blower 64 Front wall 65 Shaping duct 66 Flow

path switching chamber

66a, 66b Opening 67

Damper

69a, 69b Buffer material 70 Discharge conveyor 90 Air spraying device 91 Pipe 92 Injection hole

Claims

A rectangular cloth unfolding device that unfolds a rectangular cloth into a square and supplies it to a vacuum conveyor,
An extension mechanism that extends by pulling the upper edge of the rectangular fabric to the left and right;
A delivery mechanism that holds the upper edge of the elongated square-shaped cloth in a forward position, and moves backward to deliver to the vacuum conveyor;
A suction duct for generating a negative pressure on the vacuum conveyor;
A shaping duct for sucking downward the lower part of the rectangular cloth held in the forward position;
A flow path switching chamber interposed between the suction duct and the shaping duct and an air suction machine;
A damper for switching the flow path of the flow path switching chamber,
A rectangular cloth unfolding apparatus, wherein the switching operation of the damper is controlled by an electric actuator.
The electric actuator is a motor;
The damper is supported by a rotating shaft, and a wheel fixed to the rotating shaft;
2. A rectangular cloth unfolding apparatus according to claim 1, wherein a rope is wound around the output shaft wheel of the motor.
The electric actuator is a motor;
2. The rectangular cloth unfolding apparatus according to claim 1, wherein a link is provided between the rotating shaft of the damper and the output shaft of the motor.
4. The rectangular cloth unfolding device according to claim 2, wherein the motor is a servo motor.