JPS625769Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an intermediate guide device that can follow the elevation and descent of an upper pinch roll.

A pinch roll device has traditionally been used before the down coiler of a rolling line, and in order to allow the strip tip to pass through without any trouble, it is installed not only on the upstream side of the pinch roll, but also on the input side pinch roll in the case of double pinch rolls. A guide is also provided between the roller and the outlet pinch roll.

However, in the case of double pinch rolls, the conventional intermediate guide between the input side upper pinch roll and the output side upper pinch roll was fixed to the pinch roll housing, so it was difficult to lower the input side and exit side pinch rolls. When the tip of the strip is guided and pinched with the required rolling force, the gap between the upper pinch roll and the intermediate guide is small, so the tip of the strip is guided by the intermediate guide without any problem, but the downstream If the upper pinch rolls on the entry and exit sides are raised to use another pinch roll lowering device on the side, a large gap will be created between the intermediate guide and the upper pinch rolls, and the strip will fit into the gap. There is a risk that the roller will get stuck and get caught, and a similar phenomenon may also occur, for example, when either the input side or the output side pinch roll is raised.

There is also a model in which the intermediate guide is divided into two parts, one being attached to the upper pinch roll axle box on the entry side and the other being attached to the upper pinch roll axle box on the exit side. If the upper pinch rolls on the entry and exit sides rise together, there will be no gap between the intermediate guide and the upper pinch rolls on the entry and exit sides in which the strip tip gets caught; When one of the upper pinch rolls on the side is raised, a large gap is created in the divided portion of the intermediate guide, and the tip of the strip may enter the gap and become caught.

The present invention was made with the aim of eliminating the above-mentioned drawbacks of the conventional device.In a double pinch roll, the inner part of the upper pinch roll shaft box that supports the input side upper pinch roll and the upper and lower part of the upper pinch roll shaft box that can be raised and lowered, A cam with an arcuate outer periphery is fixed to the inside of the upper pinch roll axle box that supports the pinch roll and can be raised and lowered, and a frame that can be raised and lowered is provided between the upper input pinch roll and the upper output pinch roll. An intermediate guide main body having a guide plate extending in the axial direction of the pinch rolls and having a minute gap between the pinch rolls is disposed on the frame so as to be swingable in a direction parallel to the direction in which the strip travels. It is characterized in that roller followers that can come into contact with the outer periphery of the cam are pivotally mounted on both front and rear surfaces of the main body.

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

An upper pinch roll shaft box 2a on the entry side and an upper pinch roll shaft box 2b on the exit side, which can be raised and lowered freely by an air cylinder, are fitted into the window part of the pinch roll housing 1, and upper pinch roll shaft boxes 2a and 2b are fitted into the upper pinch roll shaft boxes 2a and 2b, respectively. The rolls 3a and 3b are fitted together so as to be freely drivable, and cams 4a and 4b having arcuate outer peripheries and concentric with the upper pinch rolls 3a and 3b are fixed to the inner side of the upper pinch roll shaft boxes 2a and 2b.

The upper end of a vertical air cylinder 6 is pivotally attached to both longitudinal sides of the pinch roll of the frame 5 attached to the upper part of the pinch roll housing 1, and an upper pinch roll that extends in the longitudinal direction of the pinch roll is attached to the lower end of the rod of the air cylinder 6. A frame 7 of a size that fits in the gap between 3a and 3b is pivotally mounted, and the frame 7
The guide members 8 on both sides are slidably fitted into vertical guide rails 9 fixed to the inner side of the pinch roll housing 1, and are attached to a bracket 10 fixed to the lower part of the frame 7, extending parallel to the frame 7. Upper pinch rolls 3a, 3 similar to frame 7
The intermediate guide body 11 is sized to fit in the gap between b.
are pivotally mounted with a pin so as to be able to swing in a direction parallel to the direction in which the strip travels, and roller followers 12a and 12b that can abut on the outer periphery of the arc-shaped cams 4a and 4b are rotatably mounted on both front and rear sides of the intermediate guide main body 11. A guide plate 13 is pivotally connected to the intermediate guide body 11 and extends in the longitudinal direction of the pinch rolls, and is slightly inclined so that the entry side is located above the exit side when the upper pinch rolls 3a and 3b are at a predetermined level.
are fixed to the upper pinch rolls 3a, 3b so that a small gap is maintained between the front and rear ends of the rolls.

In addition, 14a in the figure is the lower pinch roll on the entry side, 1
4b is a lower pinch roll on the exit side, and 15 is a lower intermediate guide.

Next, the operation of the present invention will be explained.

When the upper pinch rolls 3a, 3b are below, the rod of the air cylinder 6 is projected downward and the roller followers 12a, 12b are always in contact with the cam 4.
An upward force is acting on the rod so that it is in contact with the outer circumferential arc surfaces of a and 4b. Therefore, the gap between the guide plate 13 and the upper pinch rolls 3a, 3b is minute, and the leading end of the fed strip is not caught between the upper pinch rolls 3a, 3b.

When the upper pinch roll axle boxes 2a, 2b are pulled up by an air cylinder (not shown) and the upper pinch rolls 3a, 3b are raised, the rod of the air cylinder 6 is also lifted up by the upper pinch roll axle boxes 2a, 2b.
It operates in synchronization with the roller followers 12a, 12.
b rises while in contact with the arcuate outer circumferential surfaces of the cams 4a and 4b, and the intermediate guide body 11 rises to the position shown by the two-dot chain line A in FIG. Even in this state, since the gap between the guide plate 13 and the upper pinch rolls 3a, 3b is very small, the tip of the strip will not get caught between the upper pinch rolls 3a, 3b.

Further, for example, when only the upper pinch roll shaft box 2a on the entry side rises, since the frame 7 and the intermediate guide body 11 are pivotally connected, only the roller follower 12a side of the intermediate guide body 11 rises, and the upper pinch roll shaft box 2a on the entry side rises. As shown in the two-dot chain line B in Figure 1, the intermediate guide body 1
1 is in an inclined state, but since the roller follower 12a is in contact with the arcuate outer peripheral surface of the cam 4a, and the roller follower 12b is in contact with the arcuate outer peripheral surface of the cam 4a, the guide plate 13 and the upper pinch rolls 3a, 3
The gap between b can be maintained in a minute state. Therefore, the ends of the strips are connected to the upper pinch rolls 3a and 3a, as described above.
There is no chance of getting caught between 3b.

In addition, in the embodiment of the present invention, the case where the intermediate guide main body is raised and lowered using an air cylinder has been described, but it is also possible to use a hydraulic cylinder to raise and lower the intermediate guide body.
Of course, various other changes may be made without departing from the gist of the present invention.

According to the pinch roll intermediate guide device of the present invention, the gap between the guide plate and the upper pinch rolls on the entry and exit sides can always be kept small, so that the strip tip will not get caught between the upper pinch rolls. Therefore, the work can be carried out safely and reliably, and the pinch rolls can be easily rearranged, and various other excellent effects can be achieved.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of an intermediate guide device for an upper pinch roll according to the present invention, FIG. 2 is a view taken in the negative direction of FIG. 1, and FIG. 3 is a view taken in the negative direction of FIG. In the figure, 1 is a pinch roll housing, 2a, 2b
is the upper pinch roll shaft box, 3a and 3b are the upper pinch rolls, 4a and 4b are the cams, 6 is the air cylinder,
7 is a frame, 11 is an intermediate guide body, 12a,
12b is a roller follower, and 13 is a guide plate.

Claims (1)

[Scope of utility model registration request] In the double pinch roll, the outer periphery is attached to the inside part of the upper pinch roll shaft box that can be raised and lowered to support the upper pinch roll on the entry side and to the inside part of the upper pinch roll shaft box that can be lowered and lowered to support the upper pinch roll on the exit side. An arc-shaped cam is fixed, and a frame that can be raised and lowered is provided between the input side upper pinch roll and the output side upper pinch roll, and the frame is provided with a frame that extends in the axial direction of the pinch rolls and has a minute gap between the pinch rolls. An intermediate guide body having a guide plate is arranged to be swingable in a direction parallel to the direction in which the strip travels, and roller followers that can come into contact with the outer periphery of the cam are pivotally mounted on both front and rear surfaces of the intermediate guide body. Intermediate guide device for pinch rolls.