JPS6313771B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a strip guide used when winding a strip around a mandrel in a down coiler.

When winding a strip around the mandrel of a down coiler, conventionally, as shown in Fig. 1, a plurality of wrapper rolls b,
c, d are arranged, and these wrapper rolls b, c,
d, a frame f with aprons e, g, i,
By rotating each frame f, h, and j in the radial direction of the mandrel a by means of a control cylinder k, the wrapper rolls b, c, and d are brought close to and away from the mandrel a. Hold the tip of the strip l with wrapper rolls b, c, and d, and press the apron e,
It is guided by the guide parts g and i and wound around the mandrel a.

By the way, in a down coiler as shown in Fig. 1, the apron i on the exit side of the final wrapper roll d
It is necessary to press the tip of the strip l as much as possible to ensure that it follows the surface of the mandrel a when the tip of the strip l is wound once. It is better to make the gap m between the strip l and the mandrel a as small as possible according to the thickness of the plate, and after the tip of the guide portion is brought close to the mandrel a and the tip of the strip l passes the wrapper roll d, the tip of the strip l should be held down as much as possible and the strip removed. It is desirable to force the tip of the mandrel a along the surface of the mandrel a to wind it up.

On the other hand, the wrapper roll d holds the surface of the coil when the tip of the strip is rolled up and wound around the mandrel a, and is moved back according to the thickness of the coil. After a few turns, the strip has no longer served its purpose, so it is moved back to avoid damaging the strip as it comes into contact with the thickening coil. Conventionally, Ratspur roll d
The guide portion on the exit side thereof is fixed to an integral frame, and is configured to be retracted about the fulcrum of the frame j.

However, as described above, when the gap m between the tip of the guide part of the apron i on the exit side of the final wrapper roll and the mandrel a is made as small as possible according to the plate thickness, the winding of the tip of the strip ends and the coil is removed. As the winding becomes thicker, the surface of the coil and the tip of the guide may come into contact and damage the strip. Therefore, it is necessary that the tip of the guide portion separates from the mandrel a earlier than the retreat of the wrapper roll d, which is retreated radially outward of the mandrel together with the frame j according to the thickness of the coil. Moreover, in this case, since the tip end surface n of the frame j serves to guide the strip l so that it is caught between the first wrapper roll b and the mandrel a, when the strip winding guide section retreats, It is necessary to move the strip back along a trajectory that does not make contact with the strip l.

The present invention satisfies the above needs by:
In particular, the strip guide on the exit side of the final wrapper roll is moved as close as possible to the mandrel so that the guide is moved back faster than the wrapper roll leaves the mandrel, and is also moved back along the strip that is caught between the first wrapper roll and the mandrel. A plurality of wrapper rolls are arranged around the mandrel, and on the strip exit side of the final wrapper roll, a guide surface is provided on the upper surface to introduce the strip into the mandrel, and a guide portion is provided on the mandrel side end surface to guide the strip tip along the outer circumference of the mandrel. In the down coiler, a strip guide body having a strip guide body is supported so as to be movable in the radial direction of the mandrel together with the final wrapper roll, and the strip guide body has a strip guide body that is located below the guide surface of the strip guide body and on the opposite side of the mandrel from the guide portion. A support point is provided at a location, and the strip guide body is rotatably connected to the support point so that when the final wrapper roll and the strip guide body move away from the mandrel, the strip guide body moves more than the final wrapper roll. It is characterized by the fact that

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 shows an example of the present invention, and the drawing shows the support state of the final wrapper roll 2 and the strip guide body 3 among a plurality of wrapper rolls arranged around the outer periphery of the mandrel 1.

When wrapping the strip 4 around the mandrel 1, move the wrapper roll 2 in its final position to the frame 5.
A bracket 21 is fixed to the distal end side of an arm 6 whose base end is pivotally connected to the body of the down coiler with a pin 7. The frame 5 is attached to the bracket 21 via a pin 22, and the arm 6 An elastic body for pushing the wrapper roll 2 toward the mandrel 1 side through the frame 5 is housed in the cylindrical portion 23 fixed to the tip of the frame 5.
A stopper is provided to restrict the movement to the side, and the arm 6
By rotating the arm 6 by a control cylinder 8 connected to the arm 6, the wrapper roll 2 can be moved in the radial direction of the mandrel 1 via a bracket 21 and a pin 22. Further, the upper surface serves as a guide surface for the strip 4 sent to the mandrel 1, and one end serves as a guide portion 10 for the tip of the strip wound around the mandrel 1, so that the tip of the guide portion 10 comes as close as possible to the surface of the mandrel 1. Place the strip guide body 3 on the wrapper roll 2.
A bracket 11 is positioned on the exit side of the strip guide body 3 and protrudes backward from the mandrel 1 on the lower surface side of the strip guide body 3. The bracket 11 is pivotally connected to the arm 6 with a pin 12, and is attached to the bracket 11 of the strip guide body 3. A bracket 13 is also protruded from the lower surface of the rear end away from the mandrel 1, and the bracket 13 is connected to an arm 14 shorter than the arm 6.
The tip of the arm 14 is pivotally connected to the body by a pin 15, and the base end of the arm 14 is pivotally connected to the fuselage body by a pin 16. When the arm 6 rotates counterclockwise in the figure, one point of the strip guide body 3 is It is attached to arm 6 via pin 12, and the other point is attached to arm 14 via pin 1.
5, the guide body 3 rotates together with the arm 6, and at the same time is regulated by the movement of the arm 14, so that the guide body 3 is given a rotational motion about the pin 12. 17 is a support arm for the third wrapper roll 18 among the four wrapper rolls, and 19 is a down coiler front pinch roll.

Since the strip guide of the present invention has the above structure, the tip of the strip 4 is connected to the first wrapper roll 20 and the mandrel 1 by the pinch roll 19.
When being fed in between, each wrapper roll is brought close to the outer surface of the mandrel 1, but at this time, the tip of the guide portion of the guide body 3 on the exit side of the final wrapper roll 2 forms a narrow gap with respect to the mandrel 1 according to the plate thickness. . Now, the tip of the strip is aligned with the guide surface 9 of the guide body 3 and the first wrapper roll 20
When the strip is caught between the mandrel 1 and the mandrel 1, the tip of the strip is regulated by the apron between the wrapper rolls and is wound around the mandrel 1. When the tip of the strip reaches the guide portion 10 of the guide body 3, the tip of the strip is pressed down by the guide portion 10 and forced to lie along the surface of the mandrel 1. As a result, the leading end of the strip is wound up without colliding with the strip 4 in front of the first wrapper roll 20, which is about to enter the second roll. As the strip 4 is wound several times around the mandrel 1 and becomes thicker, the cylinder 8 is controlled to move the wrapper roll 2 back together with other wrapper rolls via the arm 6, but the wrapper roll is always in contact with the coil surface and presses the coil surface. ing. At this time, since the strip guide body 3 is supported at two places by the arm 6 and the arm 14, when the wrapper roll 2 retreats, the strip guide body 3 follows a circular trajectory centered on the pivot point 7 of the arm 6 and the pivot point 16 of the arm 14. By combining the circular arc trajectories around the center, the strip guide body 3 rotates counterclockwise in the figure about the pin 12 while retreating.
(See Fig. 3) As a result, after the strip 4 has been wound several times around the mandrel 1, the tip of the guide portion 10 of the strip guide body 3 is moved back faster than the wrapper roll 2, and furthermore, from the position of the guide surface 9 shown in the figure. It is retracted along a trajectory along the guide surface (that is, the surface of the strip) without going out to the strip 4 side. Therefore, the coil that becomes thicker will not interfere with the tip of the guide portion 10.

Next, FIG. 4 shows another example of the present invention, in which the principle is the same as the embodiment shown in FIG. 2, but the length of the arm 14 is changed and the attachment point is changed.

In this method as well, when the wrapper roll 2 is moved backward according to the winding thickness of the coil, the strip guide body 3 moves backward while rotating counterclockwise around the pivot pin 12 on the arm 6 side. When winding is finished,
While the wrapper roll 2 is in contact with the coil shown by the two-dot chain line, the guide portion 10 of the strip guide body 3 is in a posture far away from the coil as shown by the two-dot chain line.

It should be noted that the present invention is not limited to the above-mentioned embodiments, but the guide body 3 and the wrapper roll 2 are supported by separate arms so that they can move toward and away from the mandrel, and the guide body is attached to the required portions of the wrapper roll. Any modification may be made as long as the structure is connected to the sides.

As described above, according to the present invention, the strip guide body on the exit side of the final wrapper roll is placed as close to the mandrel as possible so as to press the strip tip as much as possible, so that the strip tip can be wound smoothly and reliably, and the coil can be wound. When the strip is thickened, it moves away from the mandrel faster than the wrapper roll, so it does not come into contact with the thickening coil and there is no risk of damaging the coil, and the guide body moves back along the rolled strip. It can produce excellent effects such as no interference with the strip.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing an example of a conventional down coiler, Fig. 2 is an explanatory diagram of an embodiment of the present invention, and Fig. 3 is a schematic diagram showing an example of a conventional down coiler.
The figure is an explanatory diagram of a state in which the strip guide body is rotated in a direction away from the mandrel in FIG. 1, and FIG. 4 is an explanatory diagram of another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Mandrel, 2... Wrapper roll, 3... Strip guide body, 4... Strip, 6... Arm, 9... Guide surface, 10... Guide part, 12, 15
...pin, 14...arm.

Claims (1)

[Claims] 1. A plurality of wrapper rolls are arranged around the mandrel, and on the strip exit side of the final wrapper roll, a guide surface is provided on the upper surface to introduce the strip into the mandrel, and a guide portion is provided on the mandrel side end surface to guide the strip tip along the outer circumference of the mandrel. In a down coiler in which a strip guide body having a strip guide body is supported so as to be able to move in the radial direction of the mandrel together with the final wrapper roll, a required location below the guide surface of the strip guide body and on the opposite side of the guide portion from the mandrel. A support point is provided at the strip guide, and the strip guide body is rotatably connected to the support point so that when the final wrapper roll and the strip guide body move away from the mandrel, the strip guide body moves more than the final wrapper roll. A strip guide in a down coiler characterized by: