JPH05338874A - Unwinder for sheet-shaped material - Google Patents

Abstract

PURPOSE:To enable a predetermined feeding speed for sheet-shaped material to be attained in a short time from a stopping state using a drive mechanism of a small capacity and to enable a connecting operation for the sheet-shaped material without changing the feeding speed of the sheet-shaped mater. CONSTITUTION:Driving units for rotating first and second chucks comprise a first and second feed drive mechanism 8, 9, a first and second starting drive mechanism 10, 11, and a first and second one-way clutch 34, 35 for switching the driving systems of the first and second chucks 3, 4 from the first and second starting drive mechanism 10, 11 to the first and second feed drive mechanism 8, 9.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a synthetic resin film, paper,
The present invention relates to an unwinder for feeding a sheet-like material such as aluminum foil or cloth at a predetermined speed.

[0002]

2. Description of the Related Art Generally, when continuously feeding a sheet material such as a synthetic resin film, paper, aluminum foil, or a cloth material to a processing apparatus, it is rotatably installed on a machine base 51 as shown in FIG. Turret member 52, turrets 53 and 54 rotatably attached to the turret member 52, and a drive device 55 including a turret member rotating drive mechanism 56 and chuck rotating drive mechanisms 57 and 58. A type unwinder is installed.

In the case of the above-mentioned unwinder, when the sheet rolls 70 and 71 are supplied to the chucks 53 and 54 respectively and tightened, the drive mechanism 57 for rotating the chuck is operated to be in the sheet-like material feeding position. Chuck 53 and sheet roll 7
0 is rotated and the sheet-like material is sent out. Then, the remaining amount of the sheet material of the sheet roll 70 becomes small, the remaining amount detection sensor (not shown) is activated, and the sheet material of a predetermined length is stored by a storage device (not shown) such as a dancer roll. Then, the drive mechanism 57 for rotating the jack is rotated.
Is activated to stop the rotation of the chuck 53 and the sheet roll 70, and the sheet material of the sheet roll 70 on the delivery side and the sheet material of the sheet roll 71 on the full winding side are connected. Then, when the operation of connecting the sheet-like object is completed, the drive mechanism 58 for rotating the chuck immediately operates, and the chuck 54 and the sheet roll 71 are stopped from a stopped state to a predetermined delivery speed (150 to 200).
m / min) and the sheet-like material is being delivered.

The above-mentioned sheet roll has a diameter of 500 to 1000 mm at the start of unwinding the sheet-like material, and has a diameter of about 100 mm at the end of unwinding. The rotation speed of the output shaft changes 5 to 10 times. When the change of the rotation speed is large in this way, there is a restriction that the reduction ratio cannot be increased due to the characteristics of the electric motor.

Therefore, the diameter dimension is 500 to 1000 m.
In order to quickly start up a sheet roll having a size of m from a stopped state to a predetermined delivery speed, an electric motor having a capacity of about 5 to 10 times that of a motor having a capacity required for the operation of delivering a sheet-like material is installed. There is a need. Further, when an electric motor having a capacity necessary for the operation of delivering the sheet-like material is installed, it takes a long rise time, and it is necessary to install a storage device capable of storing a very long sheet-like material.

In place of the above-mentioned turret type unwinder, two unwinders supporting one sheet roll are installed, and the end of the sheet-like material with a small remaining amount and the sheet-like material on the full winding side are installed. The same problem arises when connecting and supplying the tips of the.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to make a very long sheet-like material so that the sheet-like material can be connected and the sheet roll can be raised from a stopped state to a predetermined sheet-like material feeding speed. That is, it is necessary to install a storage device capable of storing objects or a large-capacity electric motor for starting a large-weight and large-volume sheet roll at a predetermined speed in a short time.

[0008]

In order to solve the problems, a sheet-shaped material unwinder according to the present invention comprises a drive device for rotating a chuck, a delivery drive mechanism, a start-up drive mechanism, The drive system of the chuck is composed of a one-way clutch that switches from the drive mechanism for start-up to the drive mechanism for delivery.

Further, it is preferable that the turret type unwinder has a plurality of rotatably mounted turret members rotatably mounted on a machine base.

[0010]

FIG. 1 is a schematic view showing an embodiment of an unwinder for a sheet material according to the present invention. In the drawing, the unwinder is rotatably installed on a machine base 1 by bearings. A turret member 2,
A first chuck 3 and a second chuck 4 rotatably attached to the turret member 2, a drive device 5 for rotating the turret member, a drive device 6 for rotating the first chuck, and a second
It is composed of a drive device 7 for rotating the chuck.

The above-mentioned first drive device 6 for rotating the chuck is
The first drive mechanism 8 for delivery and the first drive mechanism 10 for start-up are used.
It is composed of a delivery drive mechanism 9 and a second startup drive mechanism 11.

The above-mentioned turret member rotating drive device 5 is a worm gear 12 integrally attached to the end of the turret member 2 and a worm gear 12 rotatably attached to the machine base 1 by a bearing and meshed with the worm gear 12. Worm gear 1
3, a sprocket 15 integrally attached to the worm gear 13, an electric motor 17 with a reduction mechanism for driving in which the sprocket 14 is attached to the output shaft, and the sprocket 1
It is composed of a chain 16 hung over 4 and 15. Then, when the electric motor 17 with a reduction mechanism is operated, the turret member 2 is rotated by 180 ° and the chuck at the delivery position is moved to the standby position and the chuck at the standby position is moved to the delivery position.

The first delivery drive mechanism 8 described above includes a sprocket 18 integrally attached to the first chuck 3 and a hollow shaft body 19 rotatably supported on the machine base 1 by bearings.
A sprocket 20, 21 mounted on both ends of the hollow shaft body 19, a driving electric motor 22 having a sprocket 23 mounted on the output shaft, a chain 24 suspended on the sprocket 18, 20 and a sprocket. It is composed of a chain 25 hung over 21 and 23.

The second delivery drive mechanism 9 includes a sprocket 26 integrally attached to the second chuck 4, and a shaft body 2 rotatably supported by a bearing in the hollow shaft 19.
7, a sprocket 28, 29 attached to both ends of the shaft 27, a driving electric motor 30 having an sprocket 31 attached to an output shaft, a chain 32 hung on the sprocket 26, 28, and a sprocket. It is composed of a chain 33 suspended between 29 and 31.

A first one-way clutch 34 is attached to the output shaft of the electric motor 22 and a second one-way clutch 35 is attached to the output shaft of the electric motor 30.

The first start-up drive mechanism 10 includes a sprocket 36 attached to the above-described first one-way clutch 34.
And a speed reducer-equipped electric motor 37 having a sprocket 38 attached to the output shaft, and a chain 42 suspended between the sprockets 36 and 38.
Reference numeral 1 denotes a sprocket 39 attached to the second one-way clutch 35 described above, an electric motor 40 with a reduction mechanism having a sprocket 41 attached to an output shaft, and sprockets 39, 4
It is composed of a chain 43 that is hung over 1.

Instead of the above-mentioned combination of the sprocket and chain, a toothed pulley and a toothed belt or a gear may be combined.

The above-described motors 17, 37, 4 with a reduction mechanism
0, the electric motors 22, 30 and the like are controlled based on operation command signals from a control device (not shown) such as a microcomputer having an input function, a storage function, a comparison calculation function, an operation command function, and the like.

In the above-mentioned sheet-like material unwinder, when the first chuck 3 on the sheet roll 70 side is started up from a stopped state to a predetermined feeding speed in order to start feeding of the sheet-like material, a control device ( When a start signal is sent from (not shown) to the electric motor 22 of the first delivery drive mechanism 8, the first chuck 3 rotates and rises to the delivery speed.

If the first chuck 3 is started up to the delivery speed in a short time, a start signal is sent from the control device (not shown) to the electric motor 37 with reduction mechanism of the first start-up drive mechanism 10. , The output shaft rotates and the first one-way clutch 3
4 drives the hollow shaft body 19 to rotate the sheet roll 70 together with the first chuck 3. When the motor 37 with the speed reduction mechanism is started and a predetermined time elapses, a start signal is sent from a control device (not shown) to the motor 22 of the first delivery drive mechanism 8 so that the rotational speed of the sheet roll 70 is connected. Get up to speed. Then, a speed increasing signal is sent from the control device (not shown) to the electric motor 22, and the first chuck 3 driven by the electric motor 37 with a speed reduction mechanism is speeded up by the electric motor 22 and rises to a predetermined delivery speed.

When the remaining amount of the sheet-like material on the sheet roll 70 becomes small and a remaining amount detecting sensor (not shown) is activated, a control device (not shown) stores the sheet-like material such as a dancer roll. When a storage start signal is sent to a device (not shown) and a sheet-like object having a predetermined length is stored,
A deceleration signal is sent from the control device (not shown) to the electric motor 22 of the first delivery drive mechanism 8 to decelerate the first chuck 3 and the sheet roll 70 to the connection operation speed.

On the other hand, when the remaining amount detection sensor (not shown) is activated, a start signal is sent from the control device (not shown) to the electric motor 40 with a reduction mechanism of the second start-up drive mechanism 11 to rotate the output shaft. To do. Then, the shaft 27 is driven by the second one-way clutch 35, and the sheet roll 71 rotates together with the second chuck 4. When a predetermined time has elapsed after the electric motor 40 with a reduction mechanism is started, a start signal is sent from a control device (not shown) to the electric motor 30 of the second delivery drive mechanism 9 to connect the rotational speed of the sheet roll 71. When the operating speed rises, a connection operation mechanism (not shown) is activated to connect the rear end of the sheet-shaped material of the sheet roll 70 and the leading end of the sheet-shaped material of the sheet roll 71. Then, the sheet-like material connected to the sheet roll 70 is immediately cut by a cutting mechanism (not shown). When the connection operation is completed, a speed increasing signal is sent from the control device (not shown) to the electric motor 30, and the drive system of the second chuck 4 driven by the electric motor 40 with a speed reduction mechanism is switched to increase the speed by the electric motor 30. Then, the sheet-shaped material is delivered by rising to a predetermined delivery speed.

When the above-mentioned connecting operation is completed, the turret member rotation-like driving device 5 is actuated to move the turret member 2 to 18 degrees.
The sheet roll 70 that has been rotated by 0 ° and is in the delivery position moves to the standby position, and the sheet roll 71 that has been in the standby position moves to the delivery operation position of the sheet-shaped material.

When the connecting operation of the sheet-like object of the first roll 3 on the sheet roll 70 side is completed, a rotation stop signal is sent from the control device (not shown) to the electric motor 22 of the first delivery drive mechanism 8. Stop.

In the above sheet-shaped material unwinder, the motors 37 and 40 with the speed reduction mechanism of the drive mechanisms 10 and 11 for start-up have a capacity of 1.8 (KW) and a rotational speed of 1500 (RP.
M), using a servo motor with a rated torque of 1.17 (Kg · F · m), and reducing the speed reduction ratio of the reduction mechanism to 1/10, start up from a stopped state to 100 m / min in about 0.54 seconds. You can When the sheet-like material is connected, the servomotors (startup drive mechanisms 10, 1) installed as the electric motors 22, 30 of the delivery drive mechanisms 8, 9 are connected.
Storage amount installed in a storage device (not shown) from a state of 100 m / min to 150 to 200 m / min which is a delivery speed of the sheet-like material by a servomotor having the same specifications as the electric motors 37 and 40 with a reduction mechanism (1). Acceleration can be controlled by a signal from the detection sensor.

As in the conventional unwinder, a single servo motor (startup drive mechanisms 10 and 11 with a reduction mechanism electric motor 3
If you start up from the stopped state to the delivery speed of the sheet-like material by a servo motor with the same specifications as 7, 40,
Since the reduction ratio cannot be increased due to the characteristics of the servo motor, it takes about 6.43 to start up to 100 m / min.
It takes a second, and if it is attempted to start up within 1 second, a servo motor having a capacity of 6 to 7 times is required.

Therefore, by only installing two small-capacity servo motors for start-up and feeding, the connection operation speed and the feeding speed can be raised in a short time, and a short sheet-like material is stored. It becomes possible to install a storage device that operates.

[0028]

According to the sheet-shaped material unwinder of the present invention, the drive device sends out the delivery drive mechanism, the startup drive mechanism, and the drive system of the chuck from the startup drive mechanism. Since it is configured with a one-way clutch that switches to a drive mechanism for a vehicle, the drive mechanism with a small capacity can start up from a stopped state to a predetermined sheet-like object delivery speed in a short time, and the sheet-like object delivery speed can be increased. It is possible to perform the connecting operation of the sheet-like material without changing it.

When a plurality of turrets are rotatably mounted on the turret member rotatably installed on the machine base as in claim 2, when the turret type unwinder supports one sheet roll. As compared with the case where two units are installed, the configuration of the entire unwinder and the installation area can be made compact.

[Brief description of drawings]

FIG. 1 is a schematic front view showing an embodiment of a sheet-shaped material unwinder of the present invention.

FIG. 2 is a view taken along arrow ZZ in FIG.

[Explanation of symbols]

1 Machine Stand 2 Turret Member 3 First Chuck 4 Second Chuck 5 Turret Member Rotation Drive Device 6 First Chuck Rotation Drive Device 7 Second Chuck Rotation Drive Device 8 First Delivery Drive Mechanism 9 Second Delivery Drive Mechanism 10 First startup drive mechanism 11 Second startup drive mechanism 12, 13 Worm gear 14, 15, 18, 20, 21, 23, 26, 28, 2
9, 31, 36, 38, 39, 41 Sprocket 16, 24, 25, 32, 33, 42, 43 Chain 17, 37, 40 Electric motor with reduction mechanism 19 Hollow shaft 22, 22 Electric motor 27 Shaft 34 34 1st Directional clutch 35 Second one-way clutch

Claims (2)

[Claims] 1. An unwinder comprising a seat roll tightening chuck rotatably mounted on a machine base and a drive device for rotating the chuck, wherein the drive device is:
A sheet-like unwinder characterized by comprising a delivery drive mechanism, a start-up drive mechanism, and a one-way clutch for switching the drive system of the chuck from the start-up drive mechanism to the delivery drive mechanism. .. 2. A turret-type unwinder in which a plurality of chucks are rotatably mounted on a turret member rotatably installed on a machine base. Machine.