JPH0381006A - Pressing method for edge rolling reduction by horizontal opposed type flying press device - Google Patents

Abstract

PURPOSE:To absorb the backward elongation of an edge rolling reduction time and to prevent vibration, uneven wear, etc., by decelerating the feeding sped of a material by a transfer device according to the backward elongation of a material generated at the material edge rolling reduction time by a die. CONSTITUTION:When the elongation toward the upperstream side in a transfer direction is generated on a material 1 at an actual edge rolling reduction time, a load is acted in the same direction on a pinch roll 11 and in that case the load applied on a journal box 20 is detected by a load cell 22. The detection signal 22 thereof is converted into a digital signal by an A/D convertor 24, inputted to a comparator 28, compared with a set signal 25 and a comparison result 27 is inputted to an arithmetic device 31. The speed to drive a motor 29 is then operated corresponding to the comparison result 27 and the speed of the motor 29 is decelerated by a control signal 30. Consequently, the feeding speed V1 of the material 1 by the pinch roll 11 becomes slow, the backward elongation DELTAl of the material 1 is absorbed and the deflection of the pinch roll 11 by the backward elongation DELTAl is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a width reduction pressing method using a horizontally opposed running press device.

[Prior Art] Conventionally, as a horizontally opposed type running press device 34 for width-reducing a strip-like material, there is, for example, one described in Japanese Patent Application Laid-open No. 81241/1983. , as shown in FIG. 3, a vertical drive shaft 2 is provided on the sides of both width ends of the material 1, and a reduction crankshaft 3 and a feed crankshaft 4 are provided on the drive shaft 2. The crank 5 is rotated [1], and one end of each of the links 8 and 9 is pivotally connected to both ends of a lever 7 that rotates around the shaft 6 on the upstream side of the drive shaft 2, and the other ends of the links 8 and 9 are are pivotally connected to the feed crank tsumugi 4 and the crank 5, respectively, and a width reduction surface 10 that can be parallel to the side surface 1a of the material 1 is provided at the tip of the crank 5.
An inclined surface fob (formed as a curved surface in the figure) continuous from a is fixed to a substantially trapezoidal mold 10 formed on the upstream side in the direction of conveyance of the material 1, and the mold 10 is
A conveying device 12 having pinch rolls 11 disposed so as to clamp the upper and lower surfaces of the material 1 is provided on the more upstream side, and by rotating the drive shaft 2 and the pinch rolls 11, the point B of the mold 10 is moved. The locus is as indicated by X in the figure, and the feeding speed v1 of the material l by the pinch roll 11 and the travel speed of the mold IO (moving speed in the material conveying direction) V2
The mold 1G is driven to reduce the width of the material 1 so that the width of the material 1 coincides with the width.

In addition to the above-mentioned type in which the mold 10 is reciprocated in the direction of conveying the material 1 using the links 8, 9, etc., as shown in FIG. Insert the travel slide 1 into the guide hole 14 of the housing 13.
5 are slidably fitted in the conveying direction of the material 1, a feeding cylinder 16 is connected to one end of the travel slide 15, and a cylinder parallel to the side surface 1a of the material 1 is inserted into the guide hole 17 of the travel slide 15. A mold slide 18 having a mold lO having an inclined surface 10b continuous from the width reduction surface 10a (flat in the figure) is attached to the tip thereof is moved by a driving device (not shown) via a connecting rod 19. The material 1 is slidably fitted so that the material 1 can reciprocate in the width direction, and as described above, the feed speed v1 of the material 1 by the pinch roll IT and the travel speed v of the mold 1O are adjusted.
There is also a horizontally opposed inter-running press device 34 that drives the mold 10 to reduce the width of the material 1 so that the width of the material 1 coincides with the width of the material 1.

[Problems to be Solved by the Invention] However, the above-mentioned horizontally opposed running press device 3
In step 4, if the width of the material 1 is rolled down by matching the feed speed v1 of the material 1 by the pinch roll 11 and the travel speed v2 of the mold 10, the material 1 will stretch toward the upstream side (rearward) in the conveyance direction during the width reduction. The actual amount of elongation (
Hereinafter referred to as consequent amount AI, the pinch roll 11
When the material 1 is bent and the width reduction blade by the mold 10 is released, the material 1 is released from being restrained by the mold 10 and becomes free in the forward direction of conveyance.
The pinch roll U was restored by its elastic force, which caused vibrations.

Moreover, the rigidity of the pinch roll 11 is relatively high, and the material 1
When the elastic deformation is smaller than the consequent KkAj, the material I tends to stretch forward by that amount, and in the case shown in FIG. 4, the mold slide 18 is forced forward and moves in the width direction. As a result, the sliding surface between the mold slide 18 and the travel slide 15 may wear unevenly.

In view of these circumstances, the present invention aims to provide a width reduction pressing method using a horizontally opposed running press device that can absorb the effects of width reduction and suppress vibrations, uneven wear, etc. .

[Means for Solving the Problems] The present invention reciprocates in the width direction a substantially trapezoidal mold in which an inclined surface continuous from the width reduction surface parallel to the side surface of the material is formed on the upstream side in the material conveyance direction. A horizontally opposed type running press device is arranged so as to be able to reciprocate in the material transport direction, and a transport device is disposed upstream of the mold in the material transport direction. Width reduction by a horizontally opposed running press device that reciprocates the molds toward and away from each other in the width direction while feeding at a desired travel speed, and also reciprocates in the material conveyance direction at a desired travel speed to reduce the width of the material. The pressing method is characterized in that the material is reduced in width by slowing down the feeding speed of the material by the conveying device in accordance with the amount of material generated when the material is reduced in width by the die, and , is characterized in that the travel speed of the mold is increased instead of slowing down the feed speed of the material by the conveying device.

[Function] Therefore, the amount of material that occurs when the material width is reduced by the mold is absorbed by reducing the material feeding speed by the conveying device or increasing the travel speed of the mold.

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

FIG. 1 shows an example of an apparatus for carrying out the method of the present invention, and the parts in the figure with the same reference numerals as in FIG. 4 represent the same parts.

A load applied to the axle box 20 in the material transport direction is applied between the upstream end surface 20a of the axle box 20, which rotatably supports the pinch roll 11, and the housing 21, which supports the axle box 20. An A/D converter is provided with a load cell 22 for detection, and outputs a detection signal 23 of the load detected by the load cell 22 as a detection signal 23 for A/D conversion.
A setting that allows the D converter 24 and the pinch roll II to manually set a set value that serves as a reference for the load applied to the load cell 22 when the material 1 is simply being transported at a desired feed rate V; and output it as a reset signal 25. a comparator 28 that compares the detection signal 23' and the setting signal 25 and outputs a comparison result 27, and outputs a control signal 30 to a motor 29 that rotationally drives the pinch roll 11 based on the comparison result 27. and a D/A converter 32 that outputs the control signal 30 as a control signal 30° after D/A conversion, and the pinch roll 11 is When a load is applied to the upstream side in the transport direction of the material 1, the feed speed V1 of the material 1 by the pinch roll 11 can be set to be slower by the required amount in accordance with the amount by which the load applied to the load cell 22 exceeds the set value. do.

In addition, in Fig. 1, the pinch roll 1 located on the upper surface side of the material l
Only the control system of No. 1 is shown, or the control system of the pinch roll located on the lower surface side of the material I is shown in exactly the same way.

During actual width reduction, when elongation occurs in the material l toward the upstream side in the conveying direction, a load acts on the pinch roll J1 toward the upstream side in the conveying direction, and at that time, the load applied to the axle box 20 is transferred by the load cell 22. Detected.

Detection signal 23 of load detected by load cell 22
is converted from an analog signal to a digital signal by the A/D converter 24 and input to the comparator 28 as a detection signal 23', and in the comparator 28, the detection signal 23' and the setting device 2
6 is compared with a setting signal 25 set in advance, and a comparison result 27 is input to the arithmetic unit 31.

When the comparison result 27 is input to the arithmetic unit 31, the arithmetic unit 31 controls the motor 29 in accordance with the comparison result 27.
The speed at which the motor 29 should actually be driven is calculated from the deceleration amount, and the control signal 30 is output, and the M control signal 30 or the D/A converter 32 converts the digital signal into an analog signal. It is converted and output to the motor 29 as a control signal of 30°.

As a result, the motor 29 is decelerated by the required amount, and the feed rate of the material 1 by the pinch roll 11 becomes close to ■1, the consequent amount AI of the material 1 is absorbed, and the consequent amount A! This prevents the pinch roll 11 from being deflected due to this.

When the width reduction blade by the mold lO is released, the motor 29 is operating at a reduced speed, so the load applied to the load cell 22 becomes smaller than the set value, contrary to the width reduction described above.
In this case, the control signal 3 increases the speed of the motor 29 by that amount.
0 is output from the arithmetic unit 31 to the motor 29 as a control signal 30' via the D/A converter 32, the motor 29 is driven at the original speed, and the feeding speed v1 of the material l by the pinch roll 11 is returned to the original state. will be returned to.

Thereafter, the same operation as described above is repeated, and the vibration of the pinch roll 11 when rolling down one width of the material is significantly reduced, and since no overload is applied to the mold slide 18, the mold slide 18 and the travel slide 15 are This also eliminates uneven wear on the sliding surfaces between them.

Further, FIG. 2 shows another embodiment of the present invention,
In the figure, parts with the same reference numerals as in FIG. The drive speed change amount of the feed cylinder 16 is calculated and the control signal 33 of the feed cylinder 16 is changed to D/
The control signal 33° is outputted to the feed cylinder 16 via the A converter 32, and a load is applied to the pinch roll 11 in the upstream direction in the conveyance direction of the material 1 due to the rear push HAI when the width of the material 1 is reduced. At this time, the travel speed V2 of the mold lO by the feeding cylinder 16 can be set to be faster by the required amount in accordance with the amount by which the load applied to the load cell 22 exceeds the set value.

In the case of another embodiment shown in FIG. 2, when the comparison result 27 between the detection signal 23° and the setting signal 25 is input to the calculation device 31 during actual width reduction, the comparison result 27 is inputted to the calculation device 31. The speed increase amount of the feed cylinder 16 is calculated in accordance with the speed increase amount, and the speed at which the feed cylinder IB should actually be driven is calculated from the speed increase amount, and the control signal 33 is output.
The control signal 33 is converted to the control signal 3 via the D/A converter 32.
3° is output to the feed cylinder 16, the feed cylinder 16 speeds up by the required amount, the travel speed v2 of the mold lO increases, and the consequent amount A of the material l! is absorbed and deflection of the pinch roll U is prevented.

When the width reduction blade by the mold lO is released, since the motor 29 is operating at a constant speed, the load applied to the load cell 22 becomes equal to the set value, and the load is transferred from the calculation device 31 via the D/A converter 32. The feed cylinder 1B is driven at the original speed by the output control signal 33°, and the travel speed V2 of the mold 10 is returned to the original state.Then, the same operation as described above is repeated, and the material 1 Vibration of the pinch roll 11 during width reduction and uneven wear of the sliding surface between the mold slide 18 and the travel slide 15 are suppressed.

Note that the width reduction pressing method using the horizontally opposed running press device of the present invention is not limited to the two-part embodiment, and various changes may be made without departing from the gist of the present invention. Of course.

[Effects of the Invention] As explained above, according to the width reduction pressing method using the horizontally opposed running press device of the present invention, it is possible to absorb the amount of consequences during width reduction, and reduce vibrations, uneven wear, etc. This can have an excellent effect of being useful for suppression.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an example of an apparatus for carrying out the method of the present invention, FIG. 2 is a plan view of another embodiment of the present invention, FIG. 3 is a plan view of a conventional example, and FIG. 4 is a plan view of another embodiment of the present invention. FIG. 3 is a plan view of a conventional example. 1 is the material, la is the side surface, IO is the mold, lOa is the width reduction surface, 10b is the inclined surface, 11 is the pinch roll, 12 is the conveyance device, 15 is the travel slide, 16 is the feed cylinder,
17 is a guide hole, 18 is a mold slide, 20 is an axle box, 22
is the load cell, 26 is the setting device, 28 is the comparator, 29 is the motor, 31 is the calculation device, 34 is the horizontally opposed running press device, vl is the feed speed, ■2 is the travel speed, and AI is the consequent amount. . Patent applicant Ishikawajima Harima Heavy Industries Co., Ltd.

Claims (1)

[Claims] 1) A substantially trapezoidal mold in which an inclined surface continuous from a width reduction surface parallel to the side surface of the material is formed on the upstream side in the material transport direction, which can be reciprocated in the width direction and can transport the material. A horizontally opposed running press device is arranged to face each other so as to be able to reciprocate in the direction, and a conveyance device is disposed upstream of the mold in the material conveyance direction. , in a width reduction pressing method using a horizontally opposed running press device, in which the molds are moved back and forth in the width direction so as to approach and move away from each other, and are also moved back and forth in the material conveyance direction at a desired travel speed to reduce the width of the material, The width is reduced by a horizontally opposed inter-running press device, characterized in that the material is reduced in width by slowing down the feed speed of the material by the conveying device in accordance with the amount of backward elongation of the material that occurs when the material is reduced in width by the die. Reduction press method. 2) A width reduction pressing method using a horizontally opposed running press device according to claim 1, characterized in that the travel speed of the mold is increased instead of slowing down the material feeding speed by the conveying device.