JP2000189696A - Workpiece developing device for cloth piece of irregular form - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a workpiece developing device for a cloth piece or the like of an irregular form capable of improving developing performance in developing the irregularly formed workpiece by centrifugal force and force of air resistance. SOLUTION: This device to be used for developing a workpiece such as a cloth piece formed in an irregular form because of twisting or warping is provided with a container 10 to provide rotation to the workpiece, and a drive mechanism 11 to rotate the container 10, the container 10 comprises a cylindrical container main body disposed to be rotatable around a vertical axial line about the axial line of itself, and a work containing part 13 provided under the container main body 12 to contain the workpiece, the workpiece containing part 13 includes an opening device 30 for dropping the workpiece by its weight to be thrown in air, an upper space 13a in he workpiece containing part 13 is formed in the form of a colum or prism, and a lower space 13b of it is formed in the form of an overturned cone or an overturned pyramid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for developing a workpiece such as a cloth piece having an irregular shape due to twisting or bending, and more particularly, to centrifuging an irregular shaped cloth piece before ironing in a laundry factory or the like. The present invention relates to an apparatus for developing a work such as an irregularly shaped cloth which can be effectively utilized for developing a washing finishing process by developing the work by force.

[0002]

2. Description of the Related Art In industrial laundry such as a laundry factory, for example, when cleaning a large amount of cloth pieces (hereinafter referred to as "work") such as a seat back cover of a train or napkins, washing, dehydration, semi-drying, and development. It is common to carry out processes such as ironing, packaging and the like.

[0003] Conventionally, various attempts have been made to automate all of these steps, but they have not yet reached the stage of realization. In the current work, the work from loading to washing, dewatering and semi-drying is almost automated, but the finishing process from spread (development) to ironing is hardly automated. Therefore, in reality, all the work of unfolding the work one by one in an unfolded state is performed manually so that the work after semi-drying can be ironed.

[0004]

When attention is paid to the proportion of workers required in such a conventional industrial washing process, it has been found that automation is progressing in the work process from load work to washing and semi-drying. In contrast, only about a few percent of the required personnel are required, while about 80% of the total number of workers is in the finishing process. Therefore, automation of this part can have a very significant effect.

However, in order to automate the finishing step, a large amount of works are surely separated one by one, and then the work is mechanically unfolded so that the work can be ironed. Technology is required. Although it is not difficult for humans to perform these operations, there are many difficulties in the device configuration because the object is a wet cloth,
It is considered that automation was delayed due to the following properties. (1) Since the work is soft, it is deformed by a slight force. (2) The friction is large and it is difficult to handle.

[0006] As one proposal, it is conceivable to attach a piece of cloth to a frame in a dry state before washing, and to perform washing to finishing consistently as it is. It is not very desirable because it will drastically change the line.

As an idea for automating the developing process when the work is a rectangular cloth piece, for example, Japanese Unexamined Patent Publication No.
As described in Japanese Patent No. 231998, there is also proposed a technique of using a plurality of chuck devices to grasp and develop a corner of a cloth piece and a corner sharing one side with the corner. However, this method has a drawback that it cannot be applied to a piece of cloth that is twisted or bent in a state where the corners are not exposed, and furthermore, it needs to be deployed through a number of mechanical gripping and pulling steps. There is a problem that takes time because there is. Therefore,
It is far from practical for practical use.

[0008] In view of this, the inventor of the present application has developed a method of unfolding a work such as a cloth piece having an irregular shape due to twisting or bending, etc., by putting the work into a work accommodating portion in a container, By giving rotation to the work by rotation and dropping the rotating work into the air outside the container,
A technique has been proposed in which the work is expanded by centrifugal force and air resistance (Japanese Patent Application Laid-Open No. Hei 9-17119).

According to this technique, the irregular work can be developed by the force of the centrifugal force and the air resistance, and it is possible to achieve practical automation by this. However, it has been found that the efficiency is not so high in the development performance. . Considering the cause, the following reasons can be cited.

First, when the entire work accommodating portion is an inverted cone or inverted pyramid, the fallen work is accommodated in the work accommodating portion in a reduced state, and the rotational energy is not spread during rotation, and the rotational energy is not increased. When the movable wings of the receiving device and the deploying device open, they begin to deploy for the first time. Therefore, if the rotation speed of the container is increased for the purpose of improving the deployment performance, after the movable wings are opened, the work tends to float upward while expanding while rotating, and in some cases, the work may be caught by the rotating movable wings and scattered. There was something to do.

Second, the movable blade hits the stopper rubber immediately after deployment, and moves toward the closing side by the repulsive energy, and finally the opening position is determined by the centrifugal force. At the time of the closing operation, the tip of the movable blade descends, Even when the unfolding work is moving laterally, it may catch on the movable blade.

Third, when the movable blade is made of a lightweight metal such as aluminum in order to reduce the weight and improve the durability of the movable blade, the rotation of the movable blade is reduced because the surface frictional force of the movable blade against the work is small. In some cases, energy cannot be efficiently transmitted to the work, and therefore, it has been necessary to further increase the rotation speed of the movable blade.

Fourth, the third reason and the like are added, and since the cover development processing time per sheet is long, it is necessary to take measures against this.

The present invention has been made in consideration of the above points, and has an advantage of improving the unfolding performance when unfolding a non-uniform work by centrifugal force and air resistance. An object of the present invention is to provide a device for developing a work such as a piece of cloth.

[0015]

According to the present invention, there is provided an apparatus for unfolding a work such as a cloth piece having an irregular shape due to torsion, bending, or the like. And a driving mechanism for rotating the container, the container is a cylindrical container body rotatably arranged around a vertical axis about its own axis, and a lower portion of the container body And a work accommodating portion for accommodating the work, the work accommodating portion includes an opening / closing device for dropping the work by its own weight and dropping the work into the air, and furthermore, the upper space in the work accommodating portion is circular. The lower space was an inverted cone or an inverted pyramid. In that case, the opening and closing device may be configured to be able to open and close at least a lower space of the upper space and the lower space of the work accommodating portion. Also, a configuration in which a cylindrical body is arranged in the upper space of the work accommodating portion and the upper space in the work accommodating portion is formed as a columnar or prismatic space, and the cylindrical body prevents the work from floating during rotation of the work. It can also be. In this case, it is highly preferable that the lower end of the cylindrical body is located slightly closer to the upper space than the boundary between the upper space and the lower space. Also, the opening and closing device includes a plurality of movable blades in a form in which a peripheral wall portion of the work accommodating portion is vertically divided and equally divided in a circumferential direction, and an upper end portion of each movable blade is hinged to a lower portion of the container body, respectively. The lower end of each movable blade is configured to be movable toward and away from each other around the hinge portion, and
Each movable blade may have a vertical portion extending in the up-down direction, and an inclined portion bent inward from the lower end of the vertical portion and extending obliquely downward. In addition, the opening operation of the opening and closing device is configured to be performed by centrifugal force generated in each movable blade based on the rotation of the container, and is opened between each movable blade and the container body near the hinge portion by the centrifugal force. There is a stopper that regulates the open position of each movable blade that has operated, and the stopper may be made non-repulsive to suppress the rebound of each movable blade. Further, a configuration may be adopted in which a friction member for improving transmission of rotational energy to the work is provided on a contact surface of the work accommodating portion with the work.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to FIGS. FIG.
FIG. 2 is a front view showing an embodiment of the work development device of the present invention, FIG. 2 is a plan view thereof, and FIG.
A section).

As can be understood from these drawings, the unfolding device 1 of the present invention has a rectangular back cover (hereinafter referred to as a work) in which twisting and bending have occurred through washing, spin-drying, semi-drying, and separating steps. Container 1 for giving rotation to K
0 and a drive mechanism 11 for rotating the container 10. The container 10 includes a cylindrical container main body 12 rotatably arranged around a vertical axis about its own axis, and a work accommodating portion 13 provided at a lower portion of the container main body 12 and accommodating a work. Have. The work accommodating section 13 includes an opening / closing device 30 for dropping the work by its own weight and dropping it into the air.

Although not specifically shown here, a wide conveyor for receiving a falling workpiece and transporting the workpiece to the outside of the developing device is disposed immediately below the opening / closing device 30. Accordingly, the gantry 14 supporting the unfolding device is designed so that the positional relationship between the unfolding device and the conveyor can be determined.

Next, these components will be described in detail. The container main body 12 is cylindrical, and is rotatably supported on the gantry 14 via two upper and lower support bearing mechanisms 15 and 16. Both the upper and lower ends of the container body 12 are open, and a hopper-shaped receiving port 18 is provided at the upper end for reliably guiding the work to be put in.

Further, on the outer periphery of the upper part of the container body 12,
A driven pulley 19 serving as a driven timing pulley is fixed. A drive pulley 20 serving as a drive-side timing pulley is fixed to an output shaft 22 of a drive motor 21. Then, the timing belt 23 is wound between the driven pulley 19 and the driving pulley 20, whereby
A rotation drive mechanism 11 for the container 10 is configured.

As shown in the longitudinal sectional view of FIG. 1 and the transverse sectional view of FIG. 3, the work accommodating portion 13 provided in the lower portion of the container body 12 has an upper space 13a formed in a columnar shape and a lower space 13b. Are formed in a regular hexagonal inverted pyramid shape. The work accommodating portion 13 also serves as an opening / closing device 30 for dropping the work into the air.
That is, six movable blades 31 are provided in a form in which the peripheral wall portion of the work accommodating portion 13 is vertically divided and divided into six equal parts in the circumferential direction.

Each movable blade 31 is vertically (vertically)
And an inclined portion 31b that is bent inward from the lower end of the vertical portion 31a and extends obliquely downward. The inside of the space surrounded by the vertical portion 31a forms the upper space 13a, and the space surrounded by the inclined portion 31b forms the lower space 13b.

The upper end of each of the movable blades 31 is hinged to the lower portion of the container body 12 via a shaft pin 32, and the lower end of each of the movable blades 31 is centered on the shaft pin (hinge portion) 32. Are configured to be movable in directions approaching and moving away from each other. Thereby, the work storage unit 1
When 3 rotates integrally with the rotation of the container body 12, a centrifugal force acts on each movable blade 31, and each centrifugal force causes each movable blade 31 to vertically rotate as shown by a virtual line in FIG.
The whole work accommodating section 13 is designed to be open.

However, in the present embodiment, the work accommodating section 1
The cylindrical body 13T is coaxially arranged in the upper space 13a of
The space surrounded by the cylindrical body 13T is a substantial upper space 13a of the work accommodating portion 13. Therefore, even when each of the movable blades 31 is opened, the upper space 13a is opened downward due to the presence of the cylindrical body 13T, and only the lower space 13b is fully opened. The size of the lower space 13b is set to a size capable of accommodating at least one work to be input one by one.

The upper part of the cylindrical body 13T is fixed to the lower part of the container main body 12, whereby the cylindrical body 13T rotates integrally with the container main body 12. The length of the cylindrical body 13T is designed to be slightly shorter than the height of the upper space 13a, so that the space between the lower end of the cylindrical body 13T and the upper end (bent portion) of the inclined portion 31b of the movable blade 31 is formed. Is set such that a gap G is formed in the gap. The gap G corresponds to a range in which the work is allowed to float in a high-speed rotation state when the work is unfolded from a state where the work is located in the lower space 13b of the work accommodating portion 13. That is, care is taken so that the lifting of the work is regulated at the lower edge of the cylindrical body 13T.

Although the size of the gap G depends on the size and type of the work, it has been found that, for example, when a work is used as a backrest cover of a seat provided on a Shinkansen, it is preferably about 10 mm. Further, regarding the angle α formed between the vertical portion 31a and the inclined portion 31b of each movable blade 31,
Experiments have shown that it is better to set the angle around 130 degrees. Of course, these points are also affected by the rotation speed of the container body 12, but the experiment is at 370 rpm.

A holding mechanism 33 is provided between the container body 12 and each of the movable blades 31 for holding each of the movable blades 31 in a closed position by using a magnetic force. The holding mechanism 33 includes a permanent magnet 35 fixed to the movable blade 31 side.
And an electromagnet 36 fixed to the container body 12 side. The permanent magnet 35 and the electromagnet 36 are arranged at opposing positions, and always exert an action of holding the movable blade 31 in the closed position by the magnetic force of the permanent magnet 35. However, when the electromagnet 36 is energized, the permanent The magnet 35 is set so as to generate a repulsive magnetic force. For example,
When the N pole of the permanent magnet 35 is disposed on the side facing the electromagnet 36, the N pole repelling the N pole is set to be generated in the electromagnet 36. Thereby, it is considered that the movable timing of each movable blade 31, that is, the timing at which the lower space 13 b of the work accommodating portion 13 is brought into the fully open state at once can be electrically determined.

There are various methods for energizing the electromagnet 36. In consideration of the fact that the entire container rotates, a power supply system using a slip ring 37 and a power supply brush 38 is adopted. That is, the slip ring 37 is provided on the outer periphery of the container body 10, and the power supply brush 38 is provided on the gantry side. The power supply brush 38 is held by a brush holder 39, and is
Biased to the side. Brush holder 39 is bolt 14
It is fixed to the gantry 14 by c.

It is also very suitable to adopt a configuration using iron pieces instead of the permanent magnets 35. The reason is that the attracting force is strong in the combination of the iron piece and the electromagnet, and the rotating speed of the deploying device is higher. For example, even at 370 rpm, a sufficient attracting force is exhibited, and the movable blade opens during rotation acceleration. Is reliably prevented. Further, the use of iron pieces can contribute to weight reduction.

On the other hand, when each movable blade 31 is opened,
A plurality of stoppers 50 (six in accordance with the number of movable blades) are provided on the outer surface side of the container body 12 for regulating the open position of each of the movable blades 31. This stopper 50
Is set at a position where a base end portion 31c of the movable blade 31 projecting upward from the hinge portion contacts the movable blade 31. In the present embodiment, non-repulsive rubber is used for the stopper 50. As the non-repulsive rubber, for example, a vibration damping rubber AP-50 (trade name) manufactured by Inner and Outside Rubber Co., Ltd. can be preferably used. Of course, other materials having similar functions can also be used.

By making the stopper 50 non-repulsive in this manner, the rebound of each movable blade 31 can be reduced or eliminated. By eliminating the rebound of the movable blade 31, it is possible to reliably prevent the developing work from being caught on the tip of the movable blade.

A friction member 60 such as a non-slip sheet is provided on a portion of the inner surface of the work accommodating portion 13 which is in direct contact with the work, that is, on an inner surface of the inclined portion 31a of each movable blade 31. The friction member 60 is provided so that rotational energy can be efficiently transmitted to the workpiece by the frictional force. That is,
This is because when the movable blade 31 is made of metal such as aluminum, the surface frictional force is small and slipping is likely to occur, so that it is possible to eliminate the difficulty in efficiently transmitting the rotational energy to the work by a simple method. In this sense, any other plate-like member or material can be used as the friction member 60 as long as it exhibits a necessary frictional force, such as a member having a large number of irregularities on the surface.

In order to use the work deploying apparatus 1 having such a configuration to deploy a work having a rectangular back cover, which has an irregular shape due to, for example, torsion or bending, first, the work accommodating portion 13 is closed. The container 10 is rotated by the drive motor 21 while holding the container 10. Then, the work is input from the receptacle 18 at the upper end opening of the container 10 in the rotating state, and the work is rotated. At this time, the loaded work is rotated by its own weight while being positioned in the work accommodating section 13. In addition, the work storage unit 13
Although the upper space 13a has a columnar shape, the lower space 13b has a slightly tapered inverted pyramid shape, so that the work is automatically guided to a center portion near the rotation center of the work accommodating portion 13. . However, the inclined portion 31b of the movable blade 31 is 1
Since the taper is gently tapered so as to be about 30 degrees, the workpiece is rotated therewith without being narrowed more than necessary, while maintaining a slightly expanded state at the time of loading.

Next, when the work has reached the required number of revolutions, the electromagnets 36 are energized all at once to open the movable blades 31 at the same time, and the work is dropped from the housing 13 by its own weight and dropped into the air. I do. Since the dropped work is given a rotation, a centrifugal force acts on itself and the air resistance is further applied, so that the work expands at a stretch and drops while spreading to the original shape of the square cover.

Considering the above expanding operation further, in the present embodiment, the rotational speed of the expanding device is increased in order to increase the rotational energy given to the workpiece for the purpose of improving the expanding ratio. In the case where the cylindrical body 13T is not provided, after the movable blade 31 is opened, the work tends to float upward while rotating, and in some cases, the work may be caught by the rotating movable blade and scattered. However, the provision of the cylindrical body 13T prevents the cylindrical body 13T from lifting up while preventing the work from laterally moving, thereby obtaining an effect of extremely minimizing the work being caught by the rotating movable blade. Can be

Further, by making the stopper 50 non-repulsive, the tip of the movable blade can be prevented from lowering below the position determined by the centrifugal force due to the repulsive energy. The effect of preventing the work from being caught can be obtained. Further, an effect of protecting the movable blade by absorbing the impact energy when the movable blade hits the stopper 50 is also obtained. Furthermore, since rotational energy can be reliably transmitted to the work by the friction member 60 provided on each movable blade 31, an effect of increasing the rotation speed of the movable blade and increasing deployment efficiency can also be obtained.

According to the experimental results, it has been found that when the torsion or bending generated in the work is small, the centrifugal force given by rotating the work can be sufficiently developed even if the centrifugal force is relatively small. On the other hand, it has been proved that when the work has a large torsion or deflection, the work can be developed by applying a correspondingly large centrifugal force. Therefore, the rotation speed control of the container 1 for applying a centrifugal force to the work is determined in consideration of the work's twisting or bending state, the material and size of the work itself, the degree of drying and the overall weight, and the like. Will be. Incidentally, in this experiment, good results were obtained at the maximum rotation speed of the movable blade of 370 rpm.

Further, if the rotation speed is further increased, the rotation force applied to the work increases (assuming no slippage), but this increases the impact load of the open movable blade. Conversely, when the rotation speed is reduced, the rotation force applied to the work is reduced. In this regard, by adopting the above configuration,
It was able to increase from the conventional 330 rpm to 370 rpm.

In the experiment, it was confirmed that the presence of the cylindrical body 13T and the presence of the friction member 60 on the movable blade greatly contributed to the improvement of the deployment performance. It is considered that the cylindrical body prevents the unfolded work from rising and catching on the rotating blade, and has a function of centering the drop position when the work is thrown. At the moment when the rotating blade opens, the cover is about halfway inside the cylinder, and the other half is observed to be sandwiched between the tip of the cylinder and the movable blade. It is considered that the rotation force is more reliably applied to the work by pinching the work by the tip of the body.

By the way, in the present embodiment, in order to improve the deployment performance, a method of shortening the tact time of the deployment device as shown in FIGS.

As shown in FIG. 4, the tact time of the first cover (work) and the tact time of the second cover can be overlapped to reduce the tact time as a whole. This is a method in which T4, which determines the air blowing stop time, is shortened, and the second cover is started to be inserted during the deceleration process after the first cover is developed. However, magnet excitation was performed 0.2 seconds after the movable blade stopped. The magnet excitation timing is set to T6 after the cover is started. In this case, there is a relationship of T3 + T4 + T6 = Tup + Tcon + Tdn + 0.2, and T4 is obtained from this equation. T6 to 0.8
Second, the time of the stop timing of the previous expansion processing and the time of the magnet excitation time of the next expansion processing were set to 0.2 seconds. The acceleration / deceleration pattern is as shown.

FIG. 5 shows the timing parameters. Conventionally, the takt time was 4.5 seconds, but 3.8.
Could be reduced to seconds. 4 and 5, T
1 is the time required for the cover to be blown by air and fall on the movable blade of the rotary developing device, Tup is the acceleration time, Tc
“on” indicates a constant rotation speed time, and “Tdn” indicates a deceleration time.

[0043]

As described above, according to the present invention, there is provided an apparatus for unfolding a workpiece such as a cloth piece having an irregular shape due to torsion or bending, and for rotating the workpiece. A container, comprising a driving mechanism for rotating the container, the container is provided at the lower part of the container body, a cylindrical container body rotatably arranged around a vertical axis about its own axis, A work storage part for storing the work, the work storage part includes an opening / closing device for dropping the work by its own weight and dropping it into the air, and further, the upper space in the work storage part is formed in a cylindrical or prismatic shape. age,
Since the lower space has an inverted conical shape or an inverted pyramid shape, it is possible to improve the unfolding performance when unfolding an irregularly shaped work by centrifugal force and air resistance.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a deployment device according to an embodiment of the present invention.

FIG. 2 is a plan view of the developing device according to the embodiment of the present invention.

FIG. 3 is a cross-sectional view of the deployment device according to the embodiment of the present invention.

FIG. 4 is a timing chart showing a method for reducing the tact time of the developing device according to the embodiment of the present invention.

FIG. 5 is a diagram showing timing parameters of the developing device according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Container 11 Drive mechanism 12 Container main body 13 Work accommodating part 13a Upper space 13b Lower space 13T Cylindrical body 14 Mount 15, 16 Support bearing mechanism 18 Reception port 19 Follower pulley 20 Drive pulley 21 Drive motor 22 Output shaft 23 Timing belt 30 Opening / closing device 31 Movable blade 31a Vertical portion 31b Inclined portion 32 Shaft pin 33 Holding mechanism 35 Permanent magnet 36 Electromagnet (magnet) 37 Slip ring 38 Power supply brush 39 Brush holder 40 Spring 50 Friction member 60 Stopper G Gap

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Kenichi Kasai 2-8-8 Hikaricho, Kokubunji-shi, Tokyo Inside the Railway Technical Research Institute (72) Kimiaki Sasaki 2-8 Hikaricho, Kokubunji-shi, Tokyo 38 Inside the Railway Technical Research Institute (72) Inventor Yukio Nishiyama 2-8-8 Hikaricho, Kokubunji-shi, Tokyo 38 Inside the Railway Technical Research Institute (72) Inventor Tatsuro Kishimoto 2- 10-8 Yaesu, Chuo-ku, Tokyo No. Central Linen Supply Co., Ltd. (72) Inventor Hiroshi Maejima 32-24 Maeuemachi, Kawaguchi City, Saitama Prefecture

Claims (7)

[Claims] An apparatus used for developing a workpiece such as a cloth piece having an irregular shape due to torsion or bending, a container for applying rotation to the workpiece, and a driving mechanism for rotating the container. The container is provided with a cylindrical container body rotatably arranged around a vertical axis about its own axis, and a work accommodating portion provided at a lower portion of the container body and accommodating the work. The work accommodating portion includes an opening / closing device for dropping the work by its own weight and dropping the work into the air, further, the upper space in the work accommodating portion has a columnar or prismatic shape, and the lower space has an inverted shape. A work developing device for irregularly shaped cloth pieces or the like, characterized in that it has a conical or inverted pyramid shape. 2. The apparatus according to claim 1, wherein the opening / closing device is capable of opening and closing at least a lower space of an upper space and a lower space of the work accommodating portion. . 3. A cylindrical body is arranged in an upper space of the work accommodating portion, and an upper space in the work accommodating portion is formed as a columnar or prismatic space, and the cylindrical member is used to rotate the work when the work is rotated. 3. The apparatus according to claim 1, wherein said apparatus is configured to prevent lifting. 4. The apparatus according to claim 3, wherein a lower end of the cylindrical body is located slightly closer to the upper space than a boundary between the upper space and the lower space. 5. The opening / closing device includes a plurality of movable blades in a form in which a peripheral wall portion of the work accommodating portion is vertically divided and equally divided in a circumferential direction, and an upper end of each movable blade is provided at a lower portion of the container body. The movable blades are hinge-coupled to each other so that the lower ends of the movable blades can move in directions approaching and separating from each other around the hinge portion, and each of the movable blades has a vertical portion extending in a vertical direction; 5. A device for developing a workpiece such as an irregularly shaped cloth piece according to any one of claims 1 to 4, further comprising an inclined portion which is bent inward from the lower end and extends obliquely downward. 6. The opening operation of the opening / closing device is performed by a centrifugal force generated in the movable blade based on the rotation of the container, and between the movable blade and the container body near the hinge portion. A stopper for regulating the opening position of the movable blade opened by centrifugal force, and the stopper is made non-repulsive to suppress the rebound of the movable blade, wherein the rebound of the movable blade is suppressed. Deployment device. 7. A workpiece according to claim 1, wherein a friction member for improving transmission of rotational energy to the workpiece is provided on a contact surface of the workpiece accommodating portion with the workpiece. Work unfolding device for the described irregular shaped cloth.