JPH0258004B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a winding device for steel strips used in slitter lines, multi-strip annealing lines, pickling lines, painting lines, etc. The present invention relates to a winding device that winds a steel strip using a group of winding shells supported by one common main shaft.

[Conventional technology]

Conventionally, as shown in Japanese Patent Laid-Open No. 57-33143, the above-mentioned winding device used in a slitter line has been constructed between a drive shaft and a plurality of winding cylinders externally fitted in parallel so as to be relatively rotatable. By interposing a torque transmission magnet in each, the drive shaft and the winding drum can be slid relative to each other, and the winding diameter can be adjusted to accommodate the difference in the winding diameter caused by the difference in the thickness of each strip. It is known to automatically adjust the rotational speed of each take-up cylinder.

Furthermore, when winding a single coil, detecting the coil diameter etc. and controlling the rotation speed and torque of the winding shaft based on this detection signal has been developed, for example, by
This method is known from Japanese Patent Publication No. 42-14891, Japanese Patent Publication No. 53-26576, Japanese Patent Publication No. 16728-1987, and the like.

[Problem that the invention seeks to solve]

In such conventional devices, the torque transmitted from the drive shaft to the take-up drum remains constant throughout, so as the winding diameter increases, the amount of slip on the take-up drum increases unstably, causing the strip to wind. This had the disadvantage that the winding tension fluctuated, resulting in excessive tightening or loosening.

Further, as the winding diameter increases, the winding load increases, but since the transmitted torque at this time is constant, it is necessary to compensate for the gradually increasing amount of slip by increasing the driving rotational speed of the motor. Therefore, there are disadvantages in that a large proportion of the motor power is consumed by the slip and that a large and high-output motor is required.

The present invention has focused on this fact, and aims to eliminate changes in tension due to changes in the winding diameter, and to make it possible to always wind a steel strip uniformly with a constant tension.

Another object of the present invention is to prevent unnecessary slips during winding, suppress power loss in the motor, and reduce the size of the motor.

[Means for solving problems]

In the present invention, the amount of torque transmitted from the drive main shaft 8 to each winding shell 9 can be increased as the coil diameter increases, and the amount of slip in the slip transmission mechanism 10 is increased when the coil diameter increases. prevent.

In the winding device of the present invention, a plurality of winding shells 9 are fitted around a drive main shaft 8 of a winding reel 5 so as to be relatively rotatable, and power is generated by frictional force between the drive main shaft 8 and each winding shell 9. A slip transmission mechanism 10 for transmitting the winding shell 9 is installed, a coil diameter detector 30 for detecting the diameter of the winding coil of the winding shell 9 is provided corresponding to each winding shell 9, and the slip transmission mechanism 10 is a brake shoe 16 that transmits the power of the drive main shaft 8 to the winding shell 9;
It has a torque adjusting means 15 that adjusts the transmission torque of this brake shoe 16 by fluid pressure, and operates between each torque adjusting means 15 and a fluid supply source 23 that supplies working fluid to this means 15. Each of the pressure regulating valves 25 for changing the fluid supply state is provided, and based on the detection signal of the coil diameter detector 30,
It is required to include a control device 27 that individually controls the pressure regulating valves 25.

[Effect]

According to the above configuration, as the diameter of the winding coil increases as winding progresses, the transmission torque of the slip transmission mechanism interposed between the drive shaft and the winding shell automatically changes according to the winding load. Since the winding tension of the steel strip is controlled to increase in a constant manner, the winding tension of the steel strip becomes constant.

〔Effect of the invention〕

Therefore, according to the device of the present invention, it is possible not only to perform slip transmission according to the difference in tension caused by the difference in the thickness of the steel strip in each strip, but also to adjust the amount of slip in the slip transmission mechanism for each strip. is automatically changed according to the coil diameter, the winding tension for each strip is made constant, and winding can be performed with uniform tension over the entire range from the start to the end of winding.

As the coil diameter increases, the transmitted torque is increased to prevent unnecessary slips in the slip transmission mechanism 10, so the power loss of the motor 7 can be minimized, and the motor 7 can be made smaller. Both equipment costs and operating costs can be reduced.

〔Example〕

1 to 4 show a winding device 1 according to the present invention.
An example in which this is applied to a slitter line will be shown.

In FIG. 2, a wide steel plate 3A continuously fed out from a winding device 2 is cut into multiple strips 3 of an appropriate width by a slitter 4, and then each strip of steel strip 3 is cut into a plurality of strips 3 by a winding device. It is wound up on the take-up reel 5 of No. 1.

In FIG. 1, a take-up reel 5 includes a driving main shaft 8 which is interlocked with a motor 7 via a reducer 6, and a number of take-up shells 9 which are fitted onto the main shaft 8 in parallel.
and a slip transmission mechanism 10 which interlocks and connects the main shaft 8 and each winding shell 9 in a relatively slippable manner.

In FIG. 4, each slip transmission mechanism 10 is
A large number of inner races 12a, 12b are externally fitted on the main shaft 8 in parallel and fixed with keys 11, and an outer race 14 is externally fitted on these inner races 12a, 12b via bushes 13 so as to be relatively rotatable. It consists of a pair of pistons (torque adjustment means) 15, 15 installed in every other inner race 12a at a constant pitch in the circumferential direction. By supplying pressurized air between the pair of pistons 15, 15 and moving the pistons 15, 15 apart in the axial direction, the pair of outer races 14, 14 located on both sides of each piston 15 are moved. The inner races 12b, 12b are pressed against the side surfaces of the adjacent inner races 12b, 12b, which are not provided, through a brake shoe 16, and rotational power from the inner races 12a, 12b to the outer race 14 is frictionally transmitted in a slippable manner.

In FIG. 3, each winding shell 9 is divided into three parts in the circumferential direction so that its outer diameter can be expanded and contracted, and is biased in the direction of diameter contraction by a spring and a guide (not shown). It is externally fitted and supported via a wedge 17 so that transmission can be transmitted. Then, one thread of the winding core 18 is externally fitted and supported between a pair of adjacent outer races 14 corresponding to a pair of pistons 15. By forcefully operating the wedge 17 in the circumferential direction using a well-known wedge operating mechanism (not shown), the diameter of the winding shell 9 is reduced, thereby making it possible to easily insert and remove the winding core 18.

In the individual slip transmission mechanism 10 constructed as described above, the transmitted torque can be adjusted by adjusting the pressure of the pressurized air supplied between the pistons 15, 15. Next, its configuration will be explained.

Pressure air is supplied to each slip transmission mechanism 10 through an in-shaft passage 20 bored in the main shaft 8 and a ventilation groove 21 formed on the outer periphery of the main shaft 8, as shown in FIGS. 3 and 4. , and the shaft passage 20 for each strip is connected to an air supply device (fluid supply source) 23 via a rotation joint 22 provided at one end of the main shaft 8 and a control valve unit 26, as shown in FIG. The air supply device 23 includes a compressor,
It consists of an accumulator, a flow divider valve, etc., and each piping 2
Pressurized air can be supplied independently for every 4 units.

Each pipe 24 has a pressure regulating valve 25 that can adjust the supply pressure.
are connected to each other, and by adjusting the pressure regulating valve 25, the air pressure supplied to each slip transmission mechanism 10 is adjusted, and the transmission torque is adjusted. By presetting this pressure regulating valve 25 for each plan in advance, changes in tension due to changes in the thickness of each strip of steel strip can be absorbed.
Further, the supply pressure of the pressure regulating valve 25 can be adjusted by an actuator such as a solenoid or an electric motor (not shown), and the operation of this actuator is controlled by a control device 27.

Connected to the control device 27 is a torque setting device 28 that sets and adjusts the transmission torque according to the coil diameter, and a coil diameter detector 30 that detects the diameter of the take-up coil wound on the take-up reel 5. It is connected. The torque setting device 28 and the coil diameter detector 30 are individually provided corresponding to each plan. As the coil diameter detector 30, for example, an ultrasonic distance measuring means can be used.

The control device 27 outputs a control signal to the actuator 25a of each pressure regulating valve 25 so as to proportionally increase the air pressure supplied to the slip transmission mechanism 10 as the diameter of the wound coil increases. With this, as the diameter of the winding coil increases, the slip transmission mechanism 1
The transmission torque at 0 is proportionally increased to prevent the amount of slip from increasing and the winding tension is maintained at a preset value.

In addition, in FIGS. 1 and 2, the reference numeral 31
3 is a control device for the motor 7, 32 is a tachometer generator that detects the moving speed of the wide steel plate 3A, and 33 is a feed speed setting device, which drive and control the motor 7 so as to maintain the line speed at a set value.
The line speed may gradually increase as the coil diameter increases, may be fixed at a constant speed, or may gradually decrease.

[Another embodiment example]

The piston 15 of the slip transmission mechanism 10 may be hydraulically controlled.

The torque setting device 28 does not necessarily need to be provided for each case, and only one torque setting device 28 may be connected to the control device 27.

In the embodiment, the pressure regulating valve 25 is configured as a relief valve and pressure control is performed using dynamic pressure, but this is not necessary and pressure control may be performed using static pressure.
Further, the pressure regulating valve 25 may be preset manually.

The coil diameter detector 30 is not particularly limited, and in addition to non-contact detection using a distance measuring means using infrared rays, a sensor that electrically detects the displacement of the touch roll using a rotary potentiometer or the like can be used.

The winding device of the present invention can be widely applied not only to slitter lines but also to winding in process lines where a plurality of slitted steel strips are annealed, pickled, and painted all at once.

The line speed may be controlled by simultaneously controlling both the motor for the unwinding device 2 and the motor 7 for the winding device 1.

[Brief explanation of drawings]

1 to 4 show an embodiment in which the present invention is applied to a strip steel slitter line, in which FIG. 1 is a schematic plan view of a winding device, FIG. 2 is a schematic explanatory view thereof, and FIG. The figure is a longitudinal sectional front view of the take-up reel, and FIG. 4 is a longitudinal sectional side view of the take-up reel. 1... Winding device, 3... Steel strip, 4... Slitter, 5
... Take-up reel, 8... Drive main shaft, 9... Take-up shell,
DESCRIPTION OF SYMBOLS 10... Slip transmission mechanism, 15... Torque adjustment means (piston), 16... Brake shoe, 23... Fluid supply source (air supply device), 25... Pressure regulating valve, 27...
Control device, 30...Coil diameter detector.

Claims (1)

[Scope of Claims] 1. A plurality of take-up shells 9 are fitted around the drive main shaft 8 of the take-up reel 5 so as to be relatively rotatable, and power is generated by frictional force between the drive hand shaft 8 and each take-up shell 9. This is a strip steel winding device in which a slip transmission mechanism 10 for transmitting the winding is installed, and a coil diameter detector 30 for detecting the winding coil diameter of the winding shell 9 is provided corresponding to each winding shell 9. The slip transmission mechanism 10 includes a brake shoe 16 that transmits the power of the drive main shaft 8 to the winding shell 9;
It has a torque adjustment means 15 that adjusts the transmission torque of this brake shoe 16 by fluid pressure, and operates between each torque adjustment means 15 and a fluid supply source 23 that supplies working fluid to this means 15. Each pressure regulating valve 25 is provided to change the fluid supply state, and based on the detection signal of the coil diameter detector 30,
A strip steel winding device equipped with a control device 27 that individually controls pressure regulating valves 25.