JPH0258005B2 - - 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, the above-mentioned winding device used in a slitter line includes a drive shaft and a plurality of winding cylinders fitted in parallel to the drive shaft so as to be relatively rotatable, as shown in, for example, Japanese Patent Application Laid-Open No. 57-33143. By interposing a magnet for torque transmission between the drive shaft and the winding drum, the drive shaft and winding drum can be slid relative to each other, thereby reducing the winding diameter due to the difference in the thickness of each strip. It is known that the rotational speed of each winding cylinder is automatically adjusted according to the difference in the winding cylinder.

Furthermore, it is possible to detect the winding torque diameter, line speed, etc., and to perform calculation processing on these detection signals to control the output of the motor of the winding device.
It is known from the publication No.-140920.

[Problem that the invention seeks to solve]

In such conventional devices, since the torque transmitted from the drive shaft to the take-up drum remains constant throughout, the amount of slip on the take-up drum increases unstably as the winding diameter increases, causing the strip to slip. There was a disadvantage that the winding tension fluctuated and excessive winding or loosening occurred.

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 rotation speed of the motor. Therefore, there are disadvantages in that the power loss of the motor consumed by the slip increases 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 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.

Still another object of the present invention is to enable more precise winding control by making it possible to individually change and set the initial transmission torque of each winding shell when winding steel strips having different thicknesses in the width direction. It is to make it.

[Means for solving problems]

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 that transmits the winding coil diameter is interposed, a coil diameter detector 30 that detects the winding coil diameter, an actual winding speed detector 32 that detects the traveling speed of the steel strip 3, and a drive main shaft 8. and a rotation speed detector 31 for detecting the rotation speed of the
Based on the information from 1 and 32, the slip amount S between the drive main shaft 8 and the take-up shell 9 is compared and calculated, and a control signal is sent to the actuator drive unit so that the calculated slip amount S becomes the set slip amount _S0 . 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;
Torque adjustment means 15 for adjusting the transmission torque of this brake shoe 16 by fluid pressure, and an operation is provided between each torque adjustment means 15 and a fluid supply source 23 that supplies an operating body to this means 15. It is required that each pressure regulating valve 25 is provided to change the fluid supply state.

Preferably, each pressure regulating valve 25 is configured to be individually adjustable by an actuator drive section 36.

[Effect]

According to the above configuration, the detected winding coil diameter and
The winding speed without slip is determined from the detected spindle speed, and this is compared with the detected actual traveling speed of the strip to calculate the amount of slip between the spindle and the winding shell. If the amount of slip is excessive, the transmission torque of the slip transmission mechanism is controlled to be increased, and the amount of slip is always maintained at an appropriate amount.

A pressure regulating valve 25 provided corresponding to each torque adjusting means 15 is provided to individually change the initial transmission torque of each winding shell 9.

〔Effect of the invention〕

Therefore, according to the present invention, it is possible not only to perform slip transmission in accordance with the tension difference caused by the difference in the thickness of the strip steel in each strip, but also to transmit the slip transmission over the entire range from the start to the end of winding. The amount of slip between the coil and each winding shell can be set appropriately, and when the coil diameter increases, winding can be performed with uniform tension by preventing loosening due to excessive slip or tightening due to insufficient slip. It becomes possible.

As the coil diameter increases, the transmitted torque is increased to prevent unnecessary slipping in the slip mechanism 10, so the power loss of the motor 7 can be minimized, and its size can be realized, which improves the overall system. This makes it possible to suppress the increase in size and cost.

Furthermore, by presetting the pressure regulating valve 25 provided corresponding to each winding shell 9, the initial transmission torque of the winding shell 9 can be individually changed and set to correspond to steel strips having different thicknesses in the width direction. It is possible to prevent the degree of slip of each plan from varying greatly due to differences in thickness, and it is possible to perform winding control more precisely.

In particular, each pressure regulating valve 25 is connected to the actuator drive unit 3.
6, even if the thickness of the strip steel or the reaction force due to bending fluctuates at the beginning, middle, and end of winding, the transmitted torque can be corrected in response to these fluctuations, and the transmission torque can be adjusted even further. This is advantageous in that precise winding control can be performed.

[First Embodiment] Figures 1 to 4 show a winding device 1 according to the present invention.
A first embodiment is shown in which the method is applied to a slitter line.

In FIG. 2, a wide steel plate 3A that is continuously unwound from an unwinding 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 transferred to 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 the winding shell 9 in a relatively slippable manner.

In FIG. 4, the slip transmission mechanism 10 includes a large number of inner races 12a and 12b that are externally fitted in parallel on the main shaft 8 and fixed with keys 11, and these inner races 12a and 12b are rotated relative to each other via a bush 13. Possibly fitted outer lace 1
4, and 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 between the pistons 15, 15. The inner races 12b, 12b are pressed against the side surfaces of the adjacent inner races 12b, 12b which are not provided with a brake shoe 16, and the rotational force 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. Note that by forcibly 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.

Each slip transmission mechanism 1 configured as above
0, transmission torque can be adjusted by adjusting the pressure of pressurized air supplied between both 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 consists of a compressor, an accumulator, a flow divider valve, etc., and each pipe 24
Pressurized air can be supplied independently to each unit.

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. This pressure regulating valve 2
By presetting 5 for each article,
Absorbs tension changes due to changes in the thickness of each strip of steel. In addition, the pressure regulating valve 25 can freely adjust the supply pressure by an actuator such as a solenoid or an electric motor (not shown), and this actuator is connected to the control device 2.
The operation is controlled by 7.

The control device 27 includes a slip amount setting device 28.
and a coil diameter detector 30 that detects the winding coil diameter D of a typical part of the strip (for example, the middle strip) on the take-up reel 5 using an ultrasonic distance measuring means.
, a rotation speed detector 31 that detects the rotation speed N of the main shaft 8 as the input shaft rotation speed of the reducer 6, and a rotation speed detector 31 that detects the rotation speed N of the main shaft 8 as the input shaft rotation speed of the reducer 6; An actual winding speed detector 32 that detects voltage is connected to each of them.

In FIG. 2, the control device 27 integrates the coil diameter D detected by the coil diameter detector 30 and the spindle rotation speed (rotation speed) N detected by the rotation speed detector 31 together with a constant to prevent slippage. a calculation unit 33 that calculates the theoretical winding speed V ₀ for the case; and a subtraction unit that calculates the amount of slip from the difference between the theoretical winding speed V ₀ and the actual winding speed V detected by the actual winding speed detector 32. A subtraction unit 35 calculates the deviation between the calculated slip amount S and the slip amount _S0 set by the setter 28, and outputs a control signal to each actuator so as to make the slip amount deviation zero. The actuator drive section 36 is also provided.

In other words, when the slip amount S becomes larger than the set slip amount _S0 , the pressure regulating valve 25 is
When the operating pressure of the pressure regulating valve 25 is increased and the transmission torque is increased in the slip transmission mechanism 10, and conversely the slip amount S becomes less than the set slip amount _S0 , the operating pressure of the pressure regulating valve 25 is decreased and the transmission torque in the slip transmission mechanism 10 is increased. Torque is reduced.

Note that the reference numeral 37 in FIGS. 1 and 2 is a control device for the motor 7, and a winding speed setting device 38.
the actual winding speed signal fed back from the detector 32, and the slip amount setting device 3 which is adjusted in synchronization with the slip amount setting device 28.
The driving speed of the motor 7 is stably controlled based on the correction signal from the motor 9.

In Fig. 2, the line speed, that is, the actual winding speed V
This control is performed on the rewinding device 2 side. Specifically, a control device 41 for the motor 40 for the rewinding device 2 is provided, and the deviation between the setting signal from the winding speed setting device 38 and the actual winding speed signal detected by the actual winding speed detector 32 is detected. The subtraction unit 42 performs calculations, and the control device 41 controls the rotation speed of the motor 40 based on the calculation results. In this way, the line speed is controlled by the winding device 2.
If the line speed is controlled on the side, the line speed is controlled on the winding device 1 side including the slip transmission mechanism 10.
Since accurate speed control can be performed and the response speed when controlling and adjusting the line speed is fast, it is advantageous in keeping the winding tension constant.

[Second Embodiment] FIG. 5 shows a second embodiment of the present invention. In this case, a manually preset pressure regulating valve 25b is provided for each pipe 24, and each slip transmission mechanism 10 is provided between the pressure regulating valve 25b and the air supply device 23.
An electromagnetic dead valve 26A is provided to collectively adjust the air pressure supplied to the cylinder, and the transmission torque can be controlled by controlling the pressure of the electromagnetic valve 26A using a control device.

[Another embodiment example]

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

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

The actual winding speed detector 32 may detect the running speed of the strip 3 after slitting.

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

[Brief explanation of the drawing]

1 to 4 show a first embodiment in which the winding device of the present invention is applied to a strip steel slitter line, FIG. 1 is a schematic plan view of the winding device, and FIG. 2 is a schematic explanation thereof. FIG. 3 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. FIG. 5 is an explanatory diagram of a control system showing a second embodiment of the present invention. 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, 28...
Slip amount setting device, 30...Coil diameter detector, 31
...Rotation speed detector, 32...Actual winding speed detector, S
...Slip amount, S ₀ ...Set slip amount.

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 transmitted between the drive main shaft 8 and each take-up shell 9 by frictional force. This is a steel strip winding device that is equipped with a slip transmission mechanism 10 for transmitting power, and includes a coil diameter detector 30 that detects the winding coil diameter and an actual winding speed detector that detects the running speed of the steel strip 3. 3
2, a rotation speed detector 31 that detects the rotation speed of the drive spindle 8, and a slip amount S between the drive spindle 8 and the winding shell 9 based on information from these detectors 30, 31, and 32. The slip transmission mechanism 10 has a control device 27 that outputs a control signal to the actuator drive section 36 such that the calculated slip amount S becomes the set slip amount _S0 , and the slip transmission mechanism 10 transmits the power of the drive main shaft 8 to the winding shell 9. A brake shoe 16 that transmits power to the
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. A steel band winding device is provided with pressure regulating valves 25 for changing the fluid supply state. 2. The strip steel winding device according to claim 1, wherein each pressure regulating valve 25 is configured to be individually adjustable by an actuator drive section 36.