JPH0647132B2 - Automatic coil axis setting mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an automatic coil axis center setting mechanism used when mounting a coiled strip on an unwinder.

[Conventional technology]

The coiled strip (hereinafter referred to as a coil) is mounted on an unwinding cylinder (hereinafter referred to as a mandrel) of an unwinder (hereinafter referred to as a payoff reel) for processing. At this time, since the coil diameter is large and small, it is necessary to align the center of the coil with the axis of the mandrel.

An apparatus for mounting a conventionally used coil on a payoff reel will be described with reference to FIGS. 4 to 6. 4 is a plan view, FIG. 5 is a view taken in the direction of arrow C in FIG. 4, and FIG. 6 is a view taken in the direction of arrow D-D in FIG. In these figures, a coil 9 is temporarily placed off-line on a pair of spaced skids 1. A pair of skids
A groove 15 extending in the axial direction of the coil 9 placed on it and having step portions 15a at both ends is provided in the lower part of the. A coil car 2 for carrying out and inserting the coil 9 into the mandrel 5 is disposed in the groove 15 in the lower portion of the skid 1. The coil car 2 has an axle 2a and travels on a rail 4 arranged on the step portion 15a by a driving means (not shown). The coil car 2 is equipped with a hydraulic cylinder 11 that moves the saddle 10 up and down. A payoff reel 3 is arranged at a distance from the skid 1, and a cylindrical mandrel 5 extending horizontally in the direction of the skid 1 is attached to the payoff reel 3, and the mandrel 5 is connected via a speed reducer 6 and a coupling 7. It is rotationally driven by the electric motor 8 and the diameter of the expansion / contraction hydraulic cylinder 12 is expanded / contracted. Coil car 2 is on rail 4 and payoff reel 3
Drive to the vicinity.

In the above apparatus, a work procedure for mounting a coil on a payoff reel, which has been conventionally performed, will be described. The coil 9 is placed on the skid 1 at the off-line position by a crane or a forklift. Naturally, at this time, no other coil exists on the saddle 10 of the coil car 2 and the mandrel 5. The saddle 10 is moved to the line A (Fig. 4) by the hydraulic cylinder 11 in the direction of arrow E, and the coil 9
On the saddle 10. The operator visually adjusts the height of the saddle 10 from the direction of the arrow C (Fig. 4) so that the center C (Fig. 5) of the coil 9 and the axis C'of the mandrel 5 are aligned, and the dimension H ( The relationship between (FIG. 6) and the dimension h (FIG. 5) is set to h = H. After the center C of the coil 9 and the axis C'of the mandrel 5 are aligned with each other, the coil car 2 is run on the rail 4 from the position A to the position of the line B (Fig. 4) while maintaining the height of the saddle 10. As a result, the coil 9 is inserted into the mandrel 5. The diameter of the mandrel 5 is enlarged by the expansion / contraction hydraulic cylinder 12, the coil 9 is fixed to the mandrel 5, and the saddle 10 is lowered by the hydraulic cylinder 11 to lower the coil 9
The work of mounting the payoff reel 3 on the payoff reel 3 is completed.

In addition to the method of aligning the coil 9 and the mandrel 5 with the operator's visual observation described above, the coil lift mechanism is pulse-controlled based on the data of the coil outer diameter measured in advance and the position where the coil center coincides with the mandrel axis There is a method of stopping the hydraulic cylinder for lift with.

[Problems to be solved by the invention]

In the above-mentioned apparatus, the method of aligning the coil 9 and the mandrel 5 with the operator's visual observation requires a high degree of skill for the operator and requires a long working time. Further, if the alignment is uncertain, when the coil 9 is inserted into the mandrel 5, they may collide with each other and damage the payoff reel 3 including the mandrel. On the other hand, the pulse control requires complicated operations such as actual measurement of the outer diameter of the coil and input of data to the operation panel, and the apparatus is complicated and expensive.

INDUSTRIAL APPLICABILITY The present invention does not require any work such as the operator's visual adjustment of the lift amount, actual measurement of the coil outer diameter dimension, and input of data to the operation panel, and the apparatus becomes complicated and expensive. It is an object of the present invention to provide an automatic coil height setting mechanism.

[Means for solving problems]

Means of the present invention for solving the above problems include a coil placed on a skid, a payoff reel mandrel for rewinding the coil, and a coil raising means for raising the coil vertically. In a coil axis automatic setting mechanism for aligning the axis of a coil with the axis of the mandrel, the coil raising means is driven and stopped by a signal from the outside, and one end of the coil riser is connected to the skid. A coil outer diameter that is movably provided at a position horizontally separated from the axis of the coil by a predetermined distance in the horizontal direction perpendicular to the axial direction of the coil and that can contact the outer peripheral portion of the coil. A detection plate; a moving unit that moves the coil outer diameter detection plate and stops movement of the coil outer diameter detection plate in response to a signal from the outside; When the coil outer diameter detection plate comes into contact with the outer peripheral portion of the coil, a signal for stopping the movement of the coil outer diameter detection plate is issued to the moving means and a signal for raising the coil is issued to the coil raising means. A first limit switch, vertically movable from a shaft center of the mandrel vertically above the mandrel and movably provided in a position equal to the predetermined distance. A second limit switch that sometimes outputs a signal to the coil raising means to stop the rise of the coil, and a distance from the axial center of the mandrel to the second limit switch as the coil outer diameter detection plate moves. In order to move the second limit switch so that the distance from the coil outer peripheral portion to the coil outer diameter detection plate becomes equal to each other, the coil The horizontal movement of the outer diameter detection Deban a coil axis autoconfiguration mechanism; and a movement amount transmitting means for converting the movement in the vertical direction of the same distance as the movement.

[Action]

In the present invention as configured above, the coil outer diameter detection plate is provided at a position that is separated from the axial center of the coil placed on the skid in the horizontal direction by a predetermined distance.

When the coil is placed on the skid, the coil outer diameter detection plate is moved by the moving means in the horizontal direction perpendicular to the axial direction of the coil, and one end of the coil outer diameter detection plate is brought into contact with the outer circumference of the coil. The first limit switch mounted on the coil outer diameter detection plate operates to stop the movement of the coil outer diameter detection plate by this signal, and at the same time, the coil is raised by the coil raising means.

On the other hand, a second limit switch is provided vertically above the axis of the mandrel at a position equal to the predetermined distance, and the second limit switch is provided while the coil outer diameter detection plate is moving. The moving amount transmitting means moves the coil outer diameter detecting plate downward in the vertical direction by a moving amount equal to the moving amount in the horizontal direction. Therefore, the distance from the mandrel axis to the second limit switch is equal to the distance from the coil axis to the coil outer circumference. Then, when the coil is raised by the coil raising means and the upper end of the coil outer peripheral portion comes into contact with the second limit switch, the second limit switch is actuated and the rise of the coil is stopped by this signal. That is, when the coil shaft center and the mandrel shaft center coincide with each other, the ascending of the coil stops, and the coil shaft center and the mandrel shaft center are automatically aligned.

〔Example〕

Next, the present invention will be described by way of examples with reference to the drawings. FIG. 1 is a side view of an embodiment of the present invention. In this drawing, the skid 1, the coil car 2, the wheels 2a, the payoff reel 3, the rail 4, the mandrel 5, the saddle 10, the hydraulic cylinder 11, and the groove 15 in which the step portion 15a is formed are the fourth, fifth, and sixth grooves.
It is substantially the same as the conventional device described in the figure. The coil height setting device 20 of the present invention is a portion surrounded by a chain line in FIG. The coil outer diameter detection plate 21 disposed on the side portion of the skid 1 is connected to an actuator 38 and can be moved by the actuator 38 in a direction perpendicular to the axial direction of the coil, that is, in the horizontal direction. A touch plate 44 extending in the up-down direction via a spring 42 and a link 43 is attached to an end of the coil outer diameter detection plate 21 on the skid 1 side, and a first limit switch 40 is attached to the lowermost portion. A lever 41 is provided on the first limit switch 40 so as to project therefrom. When the end portion 44a of the touch plate 44 is pushed by the action of the spring 42 and the link 48, the touch plate 44 descends obliquely downward, the bottom portion of the touch plate 44 contacts the lever 41, and the first limit switch 40 moves. A circuit is built so that the actuator 38 is turned on, the operation of the actuator 38 is stopped, and the position is maintained. Coil outer diameter detection plate 21
The rack 22 that extends horizontally is attached to the rack 22.
A pinion 23 engaging with is connected to a vertical shaft 24 supported by a frame and bearings (not shown). Vertical shaft
The first bevel gear 25 is attached to the upper end of 24,
25 engages with the second bevel gear 26. A horizontal shaft 27 is coupled to the second bevel gear 26, and the horizontal shaft 27 has a pinion.
28 is installed. The pinion 28 engages a vertical rack 29. A limit switch bracket 30 is integrally attached to the rack 29, and a lever is attached to the lower end of the bracket 30.
A second limit switch 31 with 37 is fitted. When the lever 37 comes into contact with the coil 9 (Fig. 3), the second limit switch 31 is turned on, the operation of the hydraulic cylinder 11 for coil lift is stopped, and the circuit holding the position and the hydraulic cylinder 11 are raised (3rd A circuit for making the direction of the arrow E) is assembled. The racks 22 and 29, the pinions 23 and 28, and the bevel gears 25 and 26 have the same number of teeth. Therefore, the amount of movement of the coil outer diameter detection plate 21 is the same as that of the rack 22 and the pinion 2
3, shaft 24, bevel gears 25, 26, shaft 27, pinion
The same movement amount is transmitted to the second limit switch 31 via the rack 28 and the rack 29.

As shown in FIG. 2, the coil outer diameter detection plate 21 is at the most retracted position indicated by A, and the lever 37 of the second limit switch 31 is also installed at the highest position B. At this time, the distance between the axis of the mandrel 5 and the coil outer diameter detection plate 44 and the distance between the lever 37 are equal, and the distance is now L. In addition, the device 20 of the present invention is provided with a skid 1 if necessary.
Can be evacuated from.

Next, with reference to FIGS. 2 and 3, the procedure of the automatic coil height setting operation according to the present invention, that is, the automatic centering operation of the coil will be described. In FIG. 2, the coil 9 is placed on the skid 1 in the off-line position by a crane, a forklift or the like (not shown). At this time, the axis of the mandrel 5 and the center of the coil 9 are aligned on the Y-axis because the coil 9 follows the V-shaped slope of the skid 1 and stabilizes at the center. The coil outer diameter detection plate 21 is pushed in the direction of arrow C by the actuator 38. At this time, the vertical shaft 24 is rotated by the rack 22 and the pinion 23, and the rotation is transmitted to the horizontal shaft 27 by the first and second gears 25, 26. By rotating the pinion 28, a force is transmitted to the rack 29, and the limit switch bracket 30 is moved in the arrow D direction. On the other hand, in the coil outer diameter detection plate 21, the touch plate 44 at the tip end contacts the side surface of the coil 9 and stops. At this time, the bottom of the touch plate 44 is levered by the link 43 mechanism.
The limit switch 40 is turned on by contacting the actuator 44, and the actuator 38 holds this position (the position where the touch plate 44 contacts the side surface of the coil 9).

Now, assuming that the radius of the coil 9 is R, the moving distance of the coil outer diameter detection plate 21 is LR. If LR =, then racks 22 and 29, pinions 23 and 28, first and second bevel gears 2
Since 5 and 26 have the same number of teeth, the lever 37 also moves in the direction of arrow D only from the upper limit (position B). Therefore, the distance between the lever 37 and the mandrel 5 axis after the movement is L-
And L- = R holds. In summary, the limit switch bracket is arranged so that the lever 37 of the second limit switch 31 is at a distance equal to the radius R of the coil 9 from the axis of the mandrel 5 when the touch plate 44 of the coil outer diameter detection plate 21 contacts the coil 9. 30 moves. When the second limit switch 40 is turned on, the hydraulic cylinder 11 starts operating to raise the saddle 10 (direction of arrow E in FIG. 3). Saddle 10 receives coil 9 from skid 1 and continues to climb. When the apex of the coil 9 contacts the lever 37, the second limit switch 31 turns on and the hydraulic cylinder
11 stops and holds this position (the height at which the apex of the coil 9 contacts the lever 37). At this position, H = h, and the center of the coil 9 coincides with the axis of the mandrel 5. Next, the coil car 2 travels to the on-line position on the rail 4 via the wheels 2a while holding the position (height) of the coil 9, and the coil 9 is inserted into the mandrel 5. At this time, the device 20 of the present invention is retracted by a moving mechanism (not shown) to a position where it does not interfere with the traveling of the coil car 2 and the coil 9. Similar to the conventional procedure, the mandrel 5 is expanded by the expansion / contraction cylinder 12 described in FIG. 4 and the coil 9 is fixed, and then the saddle 10 is lowered.

〔The invention's effect〕

As described above, in the present invention, the moving coil can move horizontally to the coil outer peripheral portion from the position horizontally separated from the axis of the coil placed on the skid by a predetermined distance. Of the mandrel by a coil outer diameter detection plate whose movement is stopped by the operation of the first limit switch mounted when one end contacts the outer peripheral portion of the mandrel, and by the movement amount transmission means along with the movement of the coil outer diameter detection plate. A second limit switch that is moved downward from a position separated by a distance equal to the predetermined distance is provided above the axis in the vertical direction, and the coil outer diameter detection plate is brought into contact with the coil outer peripheral portion and stopped. With the distance from the coil axis to the coil outer diameter detection plate equal to the distance from the mandrel axis to the second limit switch, raise the coil mounted on the skid. By raising the coil by the step until the upper end of the outer circumference of the coil contacts the second limit switch, a conventionally used operator visually adjusts the lift amount of the coil by using the handle of the entry side operation panel. Method to match the coil center with the mandrel shaft center, or the operator measures the coil outer diameter using a measure or the data measured by the coil outer diameter measuring device in an arithmetic circuit and controls the hydraulic cylinder by pulse control. Therefore, according to the present invention, a trained operator does not have to perform any actual measurement work manually, an arithmetic circuit for processing the coil outer diameter dimension data, or any equipment necessary for pulse control, and a simple mechanical device can be obtained. The coil centering can now be done automatically.

[Brief description of drawings]

FIG. 1 is a side view of one embodiment of the present invention, FIG. 2 and FIG.
The figure is a side view for explaining the procedure for setting the coil height by the apparatus of FIG. 1, FIG. 4 is a plan view of conventional equipment, FIG. 5 is a view in the direction of arrow C of FIG. 4, and FIG. It is a DD arrow line view of FIG. 1 …… Skid, 2 …… Coil car 3 …… Pay-off reel, 4 …… Rail 5 …… Mandrel, 9 …… Coil (10) …… Saddle, 11 …… Hydraulic cylinder 20 …… Coil height setting device, 21 …… Coil outer diameter detection plate, 22 …… Rack 23 …… Pinion, 24 …… Vertical shaft 25 …… First bevel gear, 26 …… Second bevel gear 27 …… Horizontal shaft, 28 …… Pinion 29 …… Rack, 30 …… Bracket 31 …… Second limit switch, 37 …… Lever, 38 …… Actuator 40 …… First limit switch, 41 …… Lever 42 …… Spring, 43 …… Link 44 …… Touch plate

Claims (1)

[Claims] 1. A coil mounted on a skid, a payoff reel mandrel for rewinding the coil, and a coil raising means for raising the coil in the vertical direction, and the axis of the coil and the mandrel. In the coil axis automatic setting mechanism for aligning with the axis of the coil, the coil raising means is driven and stopped by a signal from the outside, and one end of the coil axis is placed on the skid. A coil outer diameter detection plate, which is movably provided in a horizontal direction perpendicular to the axial direction of the coil at a position horizontally separated from the center by a predetermined distance, and is in contact with the outer peripheral portion of the coil; Moving means for moving the diameter detection plate and stopping movement of the coil outer diameter detection plate in response to a signal from the outside; and a moving means attached to the coil outer diameter detection plate, wherein the coil outer diameter detection plate is A first limit switch that outputs a signal to the moving means to stop the movement of the coil outer diameter detection plate and a signal to raise the coil to the coil raising means when it contacts the outer periphery of the coil; The mandrel is provided movably in the vertical direction at a position vertically upward from the axial center of the mandrel, and is capable of contacting the upper end of the outer periphery of the coil, and at the time of contact, the coil raising means is provided with A second limit switch that outputs a signal to stop the coil from rising, and a distance from the axial center of the mandrel to the second limit switch along with the movement of the coil outer diameter detection plate and a coil outer periphery to the coil outer side. In order to move the second limit switch so that the distance to the diameter detection plate becomes equal to each other, the horizontal direction of the coil outer diameter detection plate is changed. Moving the coil axis autoconfiguration mechanism; and a movement amount transmitting means for converting the movement in the vertical direction of the same distance as the movement.