JPH07112854A - Band-like material wind-up device - Google Patents

Abstract

PURPOSE:To wind up a wide band-like material into a substantially true circular shape by retaining a retaining roll for retaining a mill roll, with a guide roll so as to prevent occurrence of vibration at the center part of the mill roll. CONSTITUTION:The pressing force of a retaining roll 7 for retaining a mill roll 24a, is controlled by an air cylinder and an oil damper. Further, the retaining roll 7 is pressed by a guide roll 60 whose pressing force is controlled by the oil damper 50, and accordingly, the retaining roll 70 is prevented from vibrating, thereby it is possible to wind up a band-like material into a substantially true circular shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt winding device capable of preventing vibration of a pressing roll.

[0002]

2. Description of the Related Art A conventional belt winding device will be described with reference to FIGS. 3 and 4. 1 is a frame, 2 is a turret mounted rotatably on the frame 1, and 3 is mounted on the turret 2. The take-up roll 3 is driven by a drive device (not shown). Further, 4 is a main shaft rotatably supported by bearings 5a and 5b, 6a and 6b are arms fixed to the main shaft 4 and projecting toward the winding roll 3, and 7 is a bearing at the tip of the arms 6a and 6b. A pressing roll rotatably attached via 8a and 8b, and 9 is a balance weight attached to the rear ends of the arms 6a and 6b. The balance weight 9 is directed toward the take-up roll 3 by the weight of the pressing roll 7. It has the role of zeroing the pressure.

Further, 10 is a lever projecting rearward from the central portion of the main shaft 4, 11 is an air cylinder, 12 is a pin that pivotally connects the piston rod 11a of the air cylinder 11 and the lever 10, and 13 is the air. A pin for pivotally attaching the lower end of the cylinder 11 to the bracket 14, and 15 for the cylinder 1
1 pressure gauge provided on the piston rod side air pipe, 1
6 is a first pressure reducing valve provided in the same air pipe, 17 is an air pipe switching solenoid valve provided in the same air pipe, 19 is a pressure gauge provided in the piston side air pipe of the cylinder 11, and 20 is the same air pipe. It is a second pressure reducing valve provided in the. When the pressure on the secondary side (pressure on the pressure gauges 15 and 19) becomes higher than the set pressure, the first and second pressure reducing valves 16 and 20 discharge the increased air pressure and decrease it. It serves to keep the secondary side at the set pressure by supplying only the low amount. Moreover, the pressure difference between the second pressure reducing valve 20 and the second pressure reducing valve 20 becomes the pressing force of the pressing roll 7 against the mill roll 24a.
The set pressure is set to be higher than the set pressure of the first pressure reducing valve 16.

Reference numeral 21 is an air pipe switching solenoid valve provided in the piston side air pipe of the cylinder 11, 22 is a pressure gauge provided in the main air pipe, and 23 is a pressure reducing valve provided in the main air pipe. The pressure reducing valve 23 has a function of maintaining the pressure of the pressurized air supplied to the entire air circuit of the pressing mechanism at a set pressure. 27 is a lever projecting rearward from the center of the main shaft 4, 28 is an oil damper, 29 is a pin pivotally connecting the piston rod 28a of the oil damper 28 and the lever 27, and 30 is the lower end of the oil damper 28. Pins pivotally attached to the bracket 31, 32 are the same oil damper 2
8 is a pipe connecting the piston rod side oil chamber C and the piston side oil chamber D. Reference numeral 33 denotes a flow rate adjusting valve provided in the pipe 32, and the flow rate adjusting valve 33 adjusts the amount of oil flowing through the line 32 to determine the resistance value of the piston 28b. However, the flow rate adjustment valve 33 can adjust the flow rate when the oil flows from the oil chamber D to the oil chamber C, but on the contrary, the flow rate adjustment does not work when the oil flows from the oil chamber C to the oil chamber D. Is designed. The sliding resistance of the piston 28b is so small that the resistance can be ignored.

[0005]

In the conventional winding device described above, it is necessary to increase the width of the mill roll when winding a strip having a long width. When the width of the mill roll becomes long in this way, vibration occurs at the substantially central portion of the pressing roll that presses the mill roll, and it becomes difficult to wind the strip into a shape close to a perfect circle. The present invention has been proposed in order to solve the above-mentioned conventional problems, and an object of the present invention is to provide a winding device for a belt-like material capable of preventing vibration of a press roll.

[0006]

For this reason, the present invention comprises a mill roll for winding a strip, and a press roll which presses the mill roll and is rotatably attached to a rotatable main shaft via an arm. In the winding device for the belt-like material, the guide roll is provided so as to come into contact with the press roll, and an oil damper that supports the guide roll is provided, and the vibration of the press roll is suppressed by the oil damper via the guide roll. It is made possible and is used as a means for solving the problems.

[0007]

A strip-shaped material winding device according to the present invention includes a mill roll that winds a strip-shaped material, a pressing roll that presses the mill roll, and is rotatably attached to a rotatable main shaft through an arm. It has a reciprocating air cylinder and an oil damper attached to the main shaft, and a second oil damper that presses the pressing roll via a guide roll. The main shaft presses the pressing roll by the air cylinder and the oil damper. You can control the pressure. Further, the second oil damper can also prevent the pressing roll from vibrating via the guide roll, and the strip can be wound in a shape closer to a perfect circle.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments of the drawings. FIG. 1 is an overall view of a winding device for a belt-like material showing an embodiment of the present invention, and FIG. 2 is a front view of the winding device. In FIGS. 1 and 2, the same parts as those of the related art will be described with the same reference numerals. The present invention differs from the conventional device (FIGS. 3 and 4) in that a second oil damper is provided, 50 is a second oil damper, 51 is a piston rod 52 of the oil damper 50 and a guide. A pin for pivotally attaching the body 53 and a pin for pivotally attaching the lower end of the oil damper 50 to the bracket 55. Further, reference numeral 56 is a pipe line that connects the piston rod side oil chamber E of the oil damper 50 and the piston side oil chamber F, and a flow rate adjusting valve 57 is provided in the pipe line 56. The flow rate adjusting valve 57 is a conduit 56.
The amount of oil flowing through is adjusted to determine the resistance value of the piston 52b. However, the same flow rate adjustment valve 57 is used in the oil chamber F.
Although the flow rate can be adjusted when the oil flows from the oil chamber E to the oil chamber E, the flow rate is not adjusted when the oil flows from the oil chamber E to the oil chamber F. Further, 60 is a guide roller, and 61 is a bearing that rotatably supports the guide roller 60 and is attached to the guide body 53.

Next, the pressing force of the pressing roller by the belt-shaped material winding device will be described. 3 and 4, the pressing force of the pressing roll 7 against the mill roll 24a when the film 24 is wound around the winding roll via the guide roll 25 is appropriately selected so as not to be too low or too high. This pressing force is determined by the pressure difference between the air chambers A and B of the air cylinder 11. That is, it is determined by the pressure difference set between the first and second pressure reducing valves 16 and 20. For example, if the appropriate pressing force of the pressing roller 7 against the mill roll 24a is 2 kg / cm ² G, the set pressure of the second pressure reducing valve 20 is 2 kg / cm ² G and the set pressure of the first pressure reducing valve 16 is 2 kg.
/ Cm ² , and the thrust of the air cylinder 11 is 2 kg / cm ² . The compression resistance of the air chambers A and B at this time is naturally larger in the air chamber B than in the air chamber A. The thrust force of the air cylinder 11 is transmitted to the press roll 7, the press roll 7 presses the mill roll 24a, and the air is blown by the mill roll 24a.
The mill roll 24a is often formed into an elliptical or uneven circular shape at this time, but the elliptical major axis portion or the convex portion tries to fly the pressing roll 7 in a direction away from the mill roll 24a. However, even if the force at this time tries to move the piston 11b of the air cylinder 11 in the direction of the arrow, the pressure of the piston side air chamber B of the air cylinder 11 is set by the second pressure reducing valve 20, so this pressure Is the first pressure reducing valve 16 rather than the thrust of the air cylinder 11.
The set pressure is higher, and the retraction of the piston 11b is limited by the compression resistance of the piston-side air chamber B. As a result,
The pressing roll 7 is hard to separate from the mill roll 24a, and follows the mill roll 24a, and the mill roll 24a containing a large amount of air.
Inflow is restricted.

By the way, the above-mentioned operation is performed by the piston side air chamber B.
Since it is carried out depending on the compressible air inside, it can be expected when the winding speed is from low speed to medium speed, for example, 10 to 150 m / min, but it is difficult to expect when it is higher than that. Therefore, in addition to the above-described configuration, the apparatus of this embodiment includes an oil damper 28 in addition to the air cylinder 11 as shown in FIG. When a force in the arrow direction is applied to the piston 11b of the air cylinder 11, a force in the same direction is also applied to the piston 28b of the oil damper 28, and the incompressible oil in the piston side oil chamber D is transferred to the piston side oil chamber D. To flow control valve 3
3, the piston 28b flows back to the oil chamber C on the piston rod side, and the backward movement of the piston 28b is suppressed by the viscous resistance of the oil at that time, and the presser roll 7 becomes difficult to separate from the mill roll 24a. Also, as the mill roll 24a rotates and the elliptical small-diameter portion or recess of the mill roll 24a approaches the pressing point of the pressing roll 7,
Piston 11b of air cylinder 11 and oil damper 28
And the piston 28b thereof are advanced by the air cylinder 11. At this time, in the oil damper 28, the oil in the oil chamber C on the piston rod side passes through the flow rate adjusting valve 33 and passes through the oil chamber D on the piston side.
However, since the flow rate adjustment valve 33 does not adjust the flow rate, the oil damper 28 does not interfere with the forward movement of the piston 11b (following the press roll 7 to the mill roll 24a) performed by the air cylinder 11.

Further, the mill roll 24a gradually becomes thicker,
As the diameter of the mill roll 24a increases, the piston 11b retracts in the air cylinder 11 and the piston side air chamber B
While the volume of the piston rod side air chamber A increases, the air pressures of the air chambers A and B become
Since the set pressure is maintained by the above-described functions of the pressure reducing valves 16 and 20, the pressing force of the pressing roll 7 against the mill roll 24a does not vary. Further, the retreat of the piston 11b due to the thickening of the mill roll 24a is very slow and is continuous, so that the retreat of the piston 11b does not affect the compression resistance. Further, as the mill roll 24a gradually thickens and the diameter of the mill roll 24a increases as described above, the piston 28b also retracts in the oil damper 28 and the volume of the piston side oil chamber D decreases, but on the other hand, on the piston rod side. Since the volume of the oil chamber C increases, the oil in the piston-side oil chamber D passes through the flow rate adjustment valve 33 and flows through the piston rod-side oil chamber C.
Flows to. However, since the speed is very slow and continuous, the piston 28b retracts without resistance, and the oil damper 28 on the air cylinder 11 side against the fluctuation of the mill roll diameter from the winding start to the winding end of the mill roll 24a. Does not interfere with action.

Further, in FIGS. 1 and 2, the guide roll 60 is used.
Holds a pressing force against the mill roll 24a by the second oil damper 50 having the same function as the oil damper 28. That is, the mill roll 24a rotates,
The elliptical small-diameter portion or concave portion of the mill roll 24a is the guide roll
As the pressing point of 0 is approached, the piston 52 of the second oil damper 50 is advanced, and in the second oil damper 50, the oil in the piston rod side oil chamber E flows into the piston side oil chamber F via the flow rate adjusting valve 57. At this time, since the flow rate adjusting valve 57 does not adjust the flow rate, the second oil damper 57 does not prevent the piston 11b from moving forward (following the press roll 7 to the mill roll 24a) performed by the air cylinder 11.
On the contrary, as the diameter of the mill roll 24a increases, the piston 52 also retracts in the second oil damper 50, and the volume of the piston side oil chamber E decreases, while the volume of the piston side oil chamber E increases, the piston The oil in the side oil chamber F is the flow rate adjusting valve 5
It flows through 7 to the oil chamber E on the piston rod side. However, since the speed is very slow and continuous, the piston 52
a retreats without resistance, and the second oil damper 57 does not hinder the action on the air cylinder 11 side with respect to fluctuations in the mill roll diameter from the beginning to the end of the mill roll 24a. As described above, since the guide roll 60 presses the mill roll 24a via the second oil damper 50, even the wide mill roll 24a can suppress the generated vibration.

[0013]

As described in detail above, according to the present invention, the second oil damper is further arranged for the presser roll whose pressing force is suppressed by the air cylinder and the oil damper. Since the pressing roll is controlled to be pressed by the guide roll provided in, the vibration generated in the pressing roll can be suppressed, and the excellent effect of being able to wind the belt-like object in a more perfect circle shape can be obtained. It is a thing.

[Brief description of drawings]

FIG. 1 is a schematic side view of a belt-like material winding device according to an embodiment of the present invention.

FIG. 2 is a schematic front view of a belt-like material winding device according to an embodiment of the present invention.

FIG. 3 is a schematic side view of a conventional belt-shaped material winding device.

FIG. 4 is a system diagram of a conventional belt-shaped material winding device.

[Explanation of symbols]

 1 Frame 2 Turret 4 Spindle 7 Holding Roll 11 Air Cylinder 24a Mill Roll 28 Oil Damper 50 Second Oil Damper 57 Flow Control Valve 60 Guide Roll

Claims (1)

[Claims] 1. A strip-shaped material winding device comprising a mill roll that winds up the strip-shaped material and a pressing roll that presses the mill-shaped material and is rotatably attached to a rotatable main shaft via an arm. A strip having a guide roll arranged so as to be in contact with the press roll and an oil damper supporting the guide roll, and vibration of the press roll can be suppressed by the oil damper via the guide roll. Winding device for items.