JPS595367B2 - Strip threading direction changing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for planarly changing the direction of strip passing in strip processing equipment.

In conventional, for example, steel strip processing lines, the direction in which the strip travels is often limited to a straight line connecting the unwinding machine and the winding machine of the IJ tube coil, and within a vertical plane that includes the straight line.

In a strip processing line, when strip processing is complicated or when a large number of processes are to be performed within one processing line, the distance between the unwinding machine and the winding machine inevitably increases.

In particular, as a recent trend, various processing steps have been made continuous in order to reduce the number of personnel, reduce equipment costs, and increase equipment capacity.

However, in such a case, the equipment (line) length necessarily increases.

If the line length is long, the work areas will be significantly separated, which is disadvantageous in terms of manpower and economics. Also, when constructing the equipment, a long factory building is required, which is disadvantageous in terms of construction costs. There is.

In order to solve these problems, a means that can change the strip running direction in a plane is required. If the strip running direction can be changed in a plane in a line, the strip processing line can be L-shaped or U-shaped. The line can be made compact because it can be laid out in a letter shape, C shape, etc.

S) Conventionally, as a means to planarly change the threading direction of an IJ tube within a line, for example, a free loop of the strip is provided in the line, and this free loop is used to change the threading direction of the strip planarly. There is a way to do it.

However, when using a free loop, the loop shape is special and the strip must be operated without tension, making control difficult and not particularly suitable for high-speed processing.

There is also a method of changing the direction of strip passing in a plane using a conical roll.

This is a method in which the IJ tube is wound around a conical roll to change the traveling direction of the strip in a plane, but due to the relative limp between the conical roll surface and the strip, the strip It cannot be used in strips where scratches are likely to occur and the surface quality is particularly problematic.

Furthermore, there is a method of changing the traveling direction of the strip IJ tube in a plane by forming a helical path for the strip using a large number of guide rolls and passing the strip along it.

However, this method also has a drawback in that it is easy to cause scratches on the surface of the strip because relative sliding between the strip and the rolls forming the helical path of the strip is unavoidable.

This invention solves the problems in the conventional method described above, and allows the strip to be passed in the strip processing line without causing any relative slippage between the strip and its conveyance medium. The aim was to obtain a device that can change the plane at any angle.

The feature of this device is that it is a device that wraps a strip around a rotating drum to change the threading direction, and has a plurality of grooves 6 carved on the surface of the driving rotating drum 10 parallel to its axis 3, and the upper surface is curved. Rectangular slider plate 4
is fitted into the groove 6 so as to be slidable in the axial direction of the rotating drum to form a cylindrical surface, and the slider plate 4 is guided in the axial direction of the rotating drum by the shaft 7, so that the shaft end of the shaft 7 is movable. A guide 5 to be fitted is fixed at a distance from the outer periphery of the rotating drum 1, and the range in which the strip 2 is wound around the rotating drum 1 is approximately the same as the angle of incidence of the strip 2 onto the rotating drum 1. In addition, in the range where the strip 2 is not wrapped around the rotating drum 1, the locus of the slider plate 4 in the 1-axis direction of the rotating drum draws a parabola with respect to the drum rotation angle and returns to the original position. It is located in the strip threading direction changing device.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Below, a slider plate guide of an apparatus for changing the passing direction of an IJ tube according to the present invention will be described in detail based on one embodiment with reference to the drawings.

The first consolidation is performed by winding the strip spirally around a rotating drum, rotating the rotating drum, and appropriately selecting the winding angle of the strip around the rotating drum and the lead angle of the strip with respect to the rotating drum. FIG. 3 is a principle diagram of an apparatus that changes the direction of strip passing to an arbitrary angle in a plane.

In this figure, 1 is a rotating drum, 2 is a strip, and the strip 2 is wound around the rotating drum 1 in a spiral manner.

The area where the strip 2 is wrapped around the rotating drum 1 is
It is between points N and B of the first solidification, and in this figure, the wrapping angle is 36
The state at 0° is shown.

Here, it is assumed that tension is applied to the strip 2 while the strip 2 is wound around the rotating drum 1 and the strip is moved in the direction of the arrow A and the opening.

If the rotating drum 1 is stationary with respect to the strip 2,
S) The IJ tube 2 slides on the surface of the rotating drum 1 and advances.

The rotating drum 1 is rotated around its axis 3 in the direction indicated by the arrow and moved in the axial direction (arrow 2), and the rotational speed V2 and axial movement speed of the rotating drum 1 at that time are determined. When (1) and (1) are respectively made to match constant values determined by the strip threading speed (■) and the incident angle α of the strip 2 onto the rotating drum 1, that is, the lead angle, the surface of the rotating drum 1 and the IJ tube 2 That is, it is possible to advance the strip 2 in the direction of arrow A and the mouth without causing a relative slippage.

FIG. 1B shows the contact point N of the strip 2 with the rotating drum 1.
and B (in the first consolidation, S) because the IJ tube 2 is wrapped around the rotating drum 1 in a 360° spiral.
, point B is on the same generatrix of the rotary drum 1).

In this figure, a chain line connecting points N and B is the locus of the center line of the strip 2 wrapped around the rotating drum 1.

The center line of the IJ tube 2 draws a "twirling spiral," so when the rotating drum 1 is laid out on a flat surface, it is a straight line connecting points A and B as shown in Figure 1B. becomes.

In order for the strip 2 to move continuously in the direction of arrow A and the opening without causing any slippage relative to the surface of the rotating drum 1 in the state shown in the first solidification, it is necessary to As is clear, the rotating drum 1 must be infinitely long in its axial direction.

The present invention effectively solves this problem of infinite length drum,
This is embodied in equipment.

In the second solidification, an embodiment of the device for changing the passing direction of the IJ tube is shown in (a) above.

In this figure, 1 is a rotating drum, 2 is a strip, and 3 is a rotating drum.
1 is a rotating shaft of the rotating drum 10, and 4 is a slider plate, which is fixed in the circumferential direction to the outer circumferential surface of the rotating drum 1, and is fitted in large numbers so as to be freely movable (displaceable) in the axial direction.

Reference numeral 5 denotes a fixed guide that restricts the displacement of the slider plate 4 in the axial direction of the rotating drum, and is provided independently and fixedly on the outer circumference of the rotating drum 1.

6 is a sliding groove of the slider plate 4 carved on the outer periphery of the rotating drum 1.

Reference numeral 7 denotes a shaft of the slider plate 4, the end of which is fitted into the fixed guide 5, and guides the displacement of the slider plate 4 in the axial direction of the rotating drum.

α is the angle of incidence of the strip 2 on the rotating drum 1, that is, the lead angle of the spiral bullet, and points N and B
respectively indicate the point of incidence and the point of injection into the stock 120 rotating drum 1.

Arrows A and 2 indicate the advancing direction of the strip 2, and tb indicates the passing direction.

The arrow indicates the rotation direction of the rotating drum 1 at that time.

FIG. 2B shows the speed of the strip 2 broken down into a component in the direction of rotation of the rotating drum 10 and a component in a direction perpendicular thereto.

In this figure a is the velocity of strip 2 and al
B, S) I) The component of the speed of the knob 2 in the direction of the drum rotation axis 3, a2, is the component in the rotation direction of the rotary drum 10.

α is the angle of incidence of the strip 2 onto the rotating drum 1.

The rotating drum 1 shown in FIG. 2A is driven by a DC motor or the like.

Now, if the speed of the strip 2 is a as shown in FIG. 2B, the J rotary drum 1 is rotated in the direction of the arrow at a circumferential speed of a2 by a drive motor or the like.

Here 82 "" a CO8 (1).

The 4 groups of slider plates are fitted into multiple sliding grooves 6 carved in the direction of the rotating drum 1 on the surface of the rotating drum 1, and are slidable on the surface of the rotating drum 1 in the axial direction of the rotating drum. .

It is fixed in the circumferential direction of the rotating drum.

The upper surface of the 4 groups of slider plates protrudes from the surface of the rotating drum 1 by an appropriate amount, and as the rotating drum 1 rotates, the upper surface of the 4 groups of slider plates fitted on the surface of the rotating drum 1 forms a rotating cylinder. .

Further, the slider plate 4 is fitted into a fixed guide 5, which is fixed regardless of the rotation of the rotating drum 1, via shafts 7 at both ends of the slider plate 4.

The fixed guides 5 may be located on both sides of each slider plate 4 or only on one side, and each of the fixed guides 5 surrounds the rotating drum 1 to form a loop.

Under such a configuration, the strip 2 enters the slider plate group 4 on the rotating drum 1 from the direction of arrow A, and is suspended from the rotating drum 1 from point N to point B via the slider plate 4. Let us consider the case where the light is wound in a spiral shape and then ejected from point B.

If strip 2 is incident at speed a, rotating drum 1
As is clear from FIG. 2B, the velocity component in the zero rotation direction is a2, that is, a cos α.

At this time, the rotating drum 1 is driven in the direction of the arrow at a rotational speed such that the peripheral speed of the surface of the slider plate 4 on the surface of the rotating drum 1 becomes a2.

Furthermore, between points A and B of the wrapping range (contact range) to the rotating drum 1 of the STOCUTSU 120, the drum shaft 3 of the strip 2 is
Since the velocity component in the direction is al, that is, asinα, the slider plate between the contact points A and H is the rotating drum 1.
According to the rotation of the rotary drum, the fixed guide 5 slides in one axial direction of the rotary drum at a speed of al.

Therefore, the shape of the fixed guide 5 is determined by the incident angle α of the strike IJ knob 2 between the contact points A and B.

It is a ``Tsurimaki Spiral''.

Therefore, under the conditions described above, the IJ tube has four groups of slider plates from contact points A to B. The strip 2 is placed on the slider plate 4 and transported without causing any relative positional deviation (slipping) with the slider plate 4, and eventually the direction of travel of the strip 2 is changed.

After that, at point 8, the slider plate 4 detached from the IJ knob 2 rotates the rotating drum 10 times, is guided by the fixed guide 5, and moves in the axial direction of the rotating drum (direction N in Figure 2). After being accelerated, it is further accelerated in the direction of one axis of the rotating drum (in the direction of N and E in FIG. 2) and returns to the contact point N.

5 in Figure 2A and Figure 3N. B shows a slider plate guide track of the device for changing the direction of strip passing according to the present invention.

FIG. 3N shows the shape of a slider plate guide fixedly provided around the rotating drum 1 independently of the rotating drum 1, that is, a fixed guide 5, when viewed from a direction perpendicular to the axis of the rotating drum. be.

The shape of the fixed guide 5 is similar to that of each slider plate 4.
is the same as the trajectory of the center of motion.

Therefore, in FIGS. 3A and 3B, point A indicates the point of incidence of the IJ tube, and point B indicates the point of injection of the strip from above the rotating drum 1.

The 0 point is the midpoint of the trajectory between points BN.

FIG. 3B shows a trajectory developed on a plane along the generatrix line XX on the rotating drum 1 passing through point N.

For convenience, the Bu coordinates in Figure 3 are introduced.

The y-axis indicates the magnitude of the rotation angle θ of the rotating drum 10, and the y-axis indicates the amount of movement of the slider plate 40 on the rotating drum in the axial direction of the rotating drum.

In FIG. 3B, the coordinate origin (ri) is the N point in FIG. 3N.

In the range where the strip 2 is wrapped around the rotating drum 1 on the slider plate, between points &-B, the slider plate 4 moves in the axial direction of the rotating drum 1 at the same speed as the component of the threading speed of the strip 2 in the rotating drum axial direction. Moving.

Between points A and B, the strip 2 is wound around the rotating drum 1 in a spiral manner, so that when viewed in a plane view of FIG. 3B, it is shown as a straight line between points A and B.

When the strip passing speed is constant, the slider plate 4b.

Between points A and B, the rotating drum moves at a constant speed in the axial direction.

Therefore, the slider plate 4 does not receive any force from the fixed guide 5 between points A and B.

After the slider plate 4 reaches the point B, the position shown in FIG.
It returns to the N point via the 0 point.

Since the strip 2 is not wrapped around the rotating drum 1 between points B and A, the slider plate 4 can be moved along one axis of the rotating drum freely between points B-C-A.

If we consider that the straight line connecting points B-C-A in Figure 3B (indicated by a dotted line in Figure C) returns to point N, then point B-
Since the motion is constant between C-4, the slider plate 4 continues to move between points B and C-A without receiving any force from the fixed guide 5.

However, in this case, since the speed of the slider plate 5 is reversed at points B and A, a large impact force is applied from the fixed guide 5 to the slider plate 4.

The impact force is inversely proportional to the time it acts, and proportional to the weight of the slider plate 40 and the amount of change in speed.

Considering the required strength of the slider plate 4 and the required strength of the rotation guide 5, it is desirable to make this impact force as small as possible.

Since the speed and weight of the slider plate 4 are determined by external factors, in order to reduce the impact force, it is sufficient to increase the duration of its action.

To do this, all you have to do is accelerate and decelerate between points B and C-4. If the midpoint of the straight line connecting points B and A is C, then there is no deceleration between points B and C. ,
Accelerated motion is performed between points C and A.

Further, in order to reduce the maximum impact force by applying an average force per time to the slider plate 4, it is better to use uniform acceleration motion.

In order for the slider plate 4 to move with uniform acceleration, the fixed guide 5 should be formed so as to draw a parabolic trajectory between points B and C and between points C and A, respectively, as shown in FIG. 3B. good.

In this case, it is necessary to determine the shape of the parabola so that tangents drawn to the parabola at points B and N become straight lines A and B.

From this, the fixed guide 5 has a shape as shown in FIG. 2A and FIG. 3A.

Since the device for changing the strip running direction according to the present invention is constructed and operated as described above, it is possible to change the strip running direction at any angle in a plane, and the rotating drum The slider plate fitted in the slider plate can be moved extremely smoothly in the axial direction of the rotating drum.

[Brief explanation of drawings]

FIG. 1N is a principle diagram of a method and apparatus for changing the direction of strip passing in a strip processing equipment according to the present invention, FIG. 1B is a developed view of a helical spiral, and FIG. 2A is a diagram of the present invention. FIG. 2B is a diagram showing an example of the apparatus in which the strip is wrapped around a rotating drum, and FIG.
Figure A is a diagram showing the shape of the fixed guide, and Figure 3B is a developed view of the fixed guide. 1... Rotating drum, 2... Strip, 3... Rotating shaft, 4... Slider plate, 5... Fixed kite, 6 ...Sliding groove, 7...Slider plate shaft.

Claims (1)

[Claims] 1. In a device for winding a strip around a rotating drum to change the threading direction, a slider has a plurality of grooves 6 carved on the surface of the driving rotating drum 10 parallel to its axis 3, and has a rectangular shape with a curved upper surface. Rotating drum 1 with plate 4 in groove 6
A guide 5 that is slidably fitted in the axial direction to form a cylindrical surface, guides the slider plate 4 in the axial direction of the rotating drum with a shaft 7, and is fitted to the shaft end of the shaft 7 so as to be movable.
is fixed at a distance from the outer periphery of the rotating drum 1, and the guide 5 is arranged so that the range in which the strip 2 is wound around the rotating drum 1 is approximately the same as the angle of incidence of the strip 2 onto the rotating drum 1, and In the range where the slider plate 4 is not wrapped around the rotating drum 1, the locus of the slider plate 4 in the 1-axis direction of the rotating drum draws a parabola with respect to the drum rotation angle and returns to the original position. Change device.