JPS6052054B2 - Coil end positioning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coil end positioning device used in an uncoiler installed in a line for supplying coil material to a press machine or the like.

Conventionally, the inner diameter part of the coil material wound with a strip of plate material was inserted into the uncoiler drum and held there, and the coil material was unwound from the end of the coil, or the coil material was fed to a press machine, etc. This is a changeover method. When cutting the coil midway and winding it back up, the motor that rotates the uncoiler drum must be operated while visually checking to ensure that the end of the coil stops at a position that is easy to work with.

However, performing the work while visually checking the coil end was not only complicated, but also required skill and took a lot of man-hours. For this reason, automation was desired, but suitable equipment was not available. An object of the present invention is to eliminate these drawbacks and provide a coil end positioning device that is automated and easy to handle, capable of always stopping the coil end at an optimal position regardless of the size of the outer diameter of the coil material. There is a particular thing.

Embodiments of the present invention will be described below with reference to the drawings.
In Figures 1 and 2, the rotating shaft 3 of the uncoiler
The drive motor 1 for rotating the is a motor that can be freely controlled in both normal and reverse directions.

The clutch 2 is provided between the drive motor 1 and the rotating shaft 3 of the uncoiler, and the solenoid valve 2a is switched to transfer pressure fluid to the clutch 2.
Power can be connected and disconnected by supplying and discharging power to and from the A first pulse disk 4 is attached to the rotating shaft 3 at its center, and a first proximity switch 5 corresponding to the first pulse disk 4 detects irregularities on the disk and transmits a pulse signal. The first proximity switch 5 is fixed to the body of the uncoiler.

The rotation angle of the rotating shaft 3 per pulse transmitted from the first proximity switch 5 is determined according to the number of unevenness provided by equally dividing the outer circumference of the first pulse disk 4, so that the required rotation angle can be adjusted. The number of unevenness is determined according to the detection resolution. An uncoiler drum 7 is fixed to the rotating shaft 3 of the uncoiler and is provided so as to be expandable in the radial direction. The inner diameter of the coiled material 6 is held by expanding an uncoiler drum 7, and is unrolled and supplied to a press machine or the like. The coil material 6 is hung by a crane and fitted into the uncoiler drum 7, with the end of the coil always substantially aligned with the fixed position 11. A coil pressing roll 8 is provided above the coil material 6 to press the coil material 6 so that it does not spring up. The coil pressing roll 8 is rotatably supported by the arm 25. A second pulse disk 9 is concentrically attached to the coil presser roll 8 and rotates together with the coil presser roll 8. A second proximity switch 10 corresponding to the second pulse disk 9 is fixed to the arm 25 . The coil pressing roll 8 rotates without slipping in contact with the coil material 6 being unwound or unwound. Therefore, the coil presser roll 8
The rotation of the second pulse disk 9 and the second proximity switch 1
By detecting at 0, the length of the coil material 6 that has been unwound or unwound can be accurately known. When the coil material 6 is uncoiled from the uncoiler, it is rolled into a pinch roll 13.
It is supplied to the press machine through the pinch roll 1
3 serves to hold down the coil material 6 so that it does not move back. A cutter 14 is provided next to the pinch roll 13,
It is used when cutting and winding the coil material 6 when replacing the coil material 6 for setup change. In FIG. 3, a first proximity switch 5 and a second proximity switch 10
When any one of the selection contacts 16, 17, and 18 is connected depending on the purpose of use, which will be described later, the pulse signal is inputted to the counter IC2O of the counter 19 and counted.

The counter 19 is provided with selection contacts 21a, 21b, and 21c that correspond to and interlock with the selection contacts 16, 17, and 18, respectively. The selection contacts 21a, 21b, 21c are digital switches 22a, 2 connected to the counter IC2O.
2b and 22c, respectively. The digital switches 22a and 22b are connected to a signal to be emitted from the first proximity switch 5 when the coil end moves from the first fixed position 11 to the second fixed position 12 or vice versa and the uncoiler drum 7 rotates. Set the number of pulses in advance. Further, the number of pulses to be emitted by the second proximity switch 10 when winding the coil material 6 back from the cutting position 15 to the second fixed position 12 is set in advance in the digital switch 22c.
When the value counted by the counter IC2O of the number of input pulses matches the set value of the selected digital switch 22, the counter IC2O outputs it and transmits it to the power transistor 23.
The signal is amplified and the relay 24 is operated. When the relay 24 operates, the power to the drive motor 1 is cut off, and at the same time, the solenoid valve 2a is turned off.
Switch to disengage and disengage clutch 2. Next, we will discuss the effect.

When the coil material 6 is to be supplied to the uncoiler drum 7 and supplied to the press machine 1, the coil end is aligned with the first fixed position 11 and held by the uncoiler drum 7. A selection contact 16 that moves the coil end from the first fixed position 11 to the second fixed position 12 is a contact. The selection contact 21a is connected and the digital switch 22a is connected.
The power source of the drive motor 1 is connected, the electromagnetic valve 2a is switched to the power supply, the clutch 2 is connected, and the uncoiler drum 7 is rotated counterclockwise in FIG. 2. The pulse signal transmitted from the first proximity switch 5 is counted by the counter IC2O, and when the coil end reaches the second fixed position 12, the counted value of the pulse circular plate 1C20 and the set value of the digital switch 22a match. do. The output from the counter IC2O operates the relay 24 via the power transistor 23, the drive motor 1 stops, and at the same time the clutch 2 is disconnected and the uncoiler drum 7 stops with the coil end at the second fixed position 12. Since the first proximity switch 5 sends a signal based on the rotation angle of the rotation shaft 3 of the uncoiler, the coil end can be accurately positioned regardless of the outer diameter of the coil material 6. When replacing the coil material 6 for setup change of the breath machine, the coil material 6 is cut with the cutter 14 and the selection contact 18 is brought into contact. The interlocking selection contact 21c is closed, and the other selection contacts 16, 17 and 21a, 21b are disconnected. The drive motor 1 is reversely rotated to wind the coil end back from the cutting position 15 toward the second fixed position 12.

The pulses sent from the second proximity switch 10 are counted by a counter 19, and when they match the set value of the digital switch 22c, the pulses are output from the counter 19 and the relay 24 is activated. The drive motor 1 stops and the coil end stops at the second fixed position 12. In this case as well, the coil ends are accurately positioned regardless of the outer diameter of the coil material 6. Next, the selection contact 17 is connected to rotate the drive motor 1 in the forward direction, and the coil end is moved from the second fixed position 12 to the first fixed position 11 in the same manner as described above, and the coil material 6 is removed from the uncoiler drum 7. remove. As is clear from the above description, according to the present invention, if the coil ends are aligned when the coil material is first mounted, the positioning can be performed automatically thereafter, and the positioning accuracy can be achieved by changing the number of concavities and convexities on the pulse disk. Therefore, it can be arbitrarily selected, and the practical effects and advantages are extremely large, such as being able to always accurately position the coil material regardless of the size of the outer diameter of the coil material.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of an uncoiler showing the mounting position of the detecting section of the embodiment, FIG. 2 is a view taken in the direction of arrow 2 in FIG. 1, and FIG. 3 is a block diagram illustrating an electric circuit. 1 is a drive motor, 2 is a clutch, 2a is a solenoid valve, 3 is (
(of the uncoiler), 4 is the first pulse disk, 5 is the first proximity switch, 6 is the coil material, 7 is the uncoiler drum, 8 is the coil presser roll, 9 is the second pulse disk, 10 is the second proximity switch, 11 in first fixed position, 1
2 is a second fixed position, 13 is a pinch roll, 14 is a cutter, 15 is a cutting position, 16 is a selection contact, 17 is a selection contact,
18 is a selection contact, 19 is a counter, 20 is a counter IC
, 21a, b, c are selection contacts, 22a, b, c are digital switches, 23 is a power transistor, 24 is a relay,
25 is the arm.

Claims (1)

[Claims] 1 A pulse disk having a plurality of irregularities on the outer periphery is fixed to the uncoiler drum and the coil press roll so as to rotate concentrically and together, and a pulse disk corresponding to each of the pulse disks is provided. A plurality of proximity switches are provided that detect irregularities of the plurality of proximity switches and transmit pulse signals, and a counter is provided that selects and inputs one of the plurality of proximity switches and counts the number of pulses, and the counter is configured to select one of the plurality of proximity switches and count the number of pulses. It has a plurality of digital switches which are each selected in response to selection and can set a desired number of pulses in advance, and outputs when the counted value of the counter and the set value of the selected digital switch match, A coil end positioning device comprising means for stopping the uncoiler drum in response to an output from the counter.