JP3980739B2 - Crank-type reduction press method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a clamp-type reduction press for reducing a moving rolled material.
[0002]
[Prior art]
As a pressing method to reduce the slab bar (rolled material), the slab bar conveyance is stopped at the time of reduction, and the start / stop method to send the slab bar by the reduction length when the reduction is completed, or the slab bar is reduced. A flying method that moves the slider to move up and down according to the conveying speed of the slab bar is used.
[0003]
[Problems to be solved by the invention]
In the case of the start / stop system, a heavy slab bar is accelerated and decelerated every cycle from a speed of 0 to a maximum speed of Vmax, so that the transport equipment such as a pinch roll and a transport table has a large capacity. Further, since it is a discontinuous operation, it is difficult to continue with the downstream rolling equipment. In the case of the flying method, a large-capacity swinging device that swings / accelerates / decelerates a heavy slider according to the speed of the slab / bar is required. Moreover, there is also a problem that a large vibration is applied to the press due to the large-capacity oscillating device.
[0004]
The present invention has been made in view of the above-described problems, and provides a reduction press having a small capacity of a rolled material conveying device and a reduction swinging device, and a reduction press that can be easily continuous with downstream equipment. The purpose is to provide.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, in the rolling reduction method of the crank type reduction press in which the rolled material to be conveyed is lowered from above and below with a die, the rolling material is at the same speed as the die during the reduction. When the rolling material is not reduced, the rolling material feed speed is adjusted to move the rolled material by a predetermined distance L during one cycle.
[0006]
The rolled material to be conveyed is reduced from above and below with a mold, and during the reduction, the rolled material is conveyed at the same speed as that of the mold, and when not being reduced, the speed is adjusted so that the moving distance of one cycle is L. The material can be conveyed at a constant speed in cycle units. In addition, the change in the conveyance speed in the cycle is significantly less than that of the start / stop method, and vibration is also significantly less than that of the slider method.
[0007]
The invention according to claim 2 comprises a die provided above and below the rolled material, a crank device for lowering each die, and a conveying device for conveying the rolled material, and the conveying device has the crank device as a mold. During the period during which the rolled material is being reduced, the mold and the rolled material are moved at the same speed, and when not being reduced, the rolling material feed speed is adjusted to move a predetermined distance L during one cycle. L is within a length L0 of reduction in the flow direction of the mold.
[0008]
The upper crank device reduces the rolled material by a die around the bottom dead center, and the lower crank device reduces the rolled material by the die around the top dead center. During the period when the mold is rolling down the rolled material, the conveying device conveys the rolled material at the same speed as the mold. Since the distance L by which the conveying device moves the rolled material in one cycle period of the crank device is within the length L0 of rolling in the mold flow direction, the rolled material is reduced by the length L one after another. Since the change in the conveying speed of the rolled material is not so large by such an operation, a large-capacity conveying apparatus is not necessary. Further, since the heavy slider is not rocked according to the speed of the rolled material, a large-capacity rocking device is not necessary. In addition, since the rolled material is conveyed substantially continuously, it can be easily continuous with the subsequent rolling apparatus.
[0009]
According to a third aspect of the present invention, in a rolling reduction method of a crank type reduction press in which a rolled material to be conveyed is reduced by a die from both sides in the width direction, the die moves at the same speed as the rolled material while being reduced, and the reduction is performed. If not, the rolling material feed rate is adjusted so that the rolling material is moved a predetermined distance L during one cycle.
Since the rolled material to be conveyed is crushed from both sides in the width direction with a mold, the rolled material is conveyed at the same speed as the dies during the reduction, and the moving distance of one cycle is set to L when the rolling is not reduced. The rolled material can be conveyed at a constant speed in cycle units. In addition, the change in the conveyance speed in the cycle is significantly less than that of the start / stop method, and vibration is also significantly less than that of the slider method.
[0011]
According to a fourth aspect of the present invention, there is provided a die provided on both sides in the width direction of the rolled material, a crank device for reducing each die in the width direction, and a conveying device for conveying the rolled material. During the period in which the apparatus is rolling the rolled material through the mold in the width direction, the mold and the rolled material are moved at the same speed. The distance L is within the length L0 that the mold is reduced in the flow direction.
[0012]
The invention of claim 4 uses the invention of claim 2 for width reduction, and the crank devices provided on both sides in the width direction of the rolled material reduce the rolled material in the width direction by a die around the bottom dead center. To do. During the period when the mold is rolling down the rolled material, the conveying device conveys the rolled material at the same speed as the mold. Since the distance La in which the conveying device moves the rolled material in one cycle period of the crank device is within the length La0 that is reduced in the flow direction of the mold, the rolled material is reduced by the length La one after another. Since the change in the conveying speed of the rolled material is not so large by such an operation, a large-capacity conveying apparatus is not necessary. Further, since the heavy slider is not rocked according to the speed of the rolled material, a large-capacity rocking device is not necessary. In addition, since the rolled material is conveyed substantially continuously, it can be easily continuous with the subsequent rolling apparatus.
[0013]
In the invention of claim 5, a looper for adjusting the length of the rolled material in a loop shape is provided downstream of the conveying device of claim 2 or 4.
[0014]
The conveyance speed of the rolled material varies within one cycle of the crank device. For this reason, by providing a looper, it can continue smoothly to a subsequent rolling apparatus or the like.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram showing the configuration and operation of the crank-type thickness reduction press according to the first embodiment. The mold 2 is provided up and down across the rolled material 1, and the mold 2 moves up and down by the crank device 3 to reduce the rolled material 1. The mold 2 and the crank device 3 are reciprocated in the rolling material flow direction by a reciprocating crank device 4. The crank device 3 and the reciprocating crank device 4 operate in synchronization. 2a is an upper die, 2b is a lower die, 3a is an upper crank device, 3b is a lower crank device, 4a is an upper reciprocating crank device, and 4b is a lower reciprocating crank device. The pinch rolls 5 are provided before and after the mold 2 to control the conveying speed of the rolled material 1 and are controlled by a control device (not shown). The conveyance table 6 is provided in the vicinity of the pinch roll 5 and conveys the rolled material 1. The looper 7 is provided on the downstream side of the pinch roll 5 and the conveying table 6 on the downstream side of the mold 2, absorbs the length of the rolled material 1 in a loop shape, and corresponds to the processing speed of the rolled material 1 of the subsequent apparatus. In addition, the conveying apparatus of a claim corresponds to the pinch roll 5.
[0016]
FIG. 2 is a view for explaining the crank operation of the crank devices 3 and 4. FIG. 3 is a diagram in which the operation of the crank device 3 in FIG. 2 is developed at a crank angle θ. FIG. 4 shows the speed in the flow direction of the rolling material 1 of the die 2 by the reciprocating crank device 4 in FIG. FIG. In FIG. 2, c represents the bottom dead center of the upper crank device 3a or the top dead center of the lower crank device 3b, and the mold 2 holds the rolled material 1 in the range of the crank angle θ from b to c1 including this c point. Squeeze. The speed in the rolling material flow direction of the die 2 during reduction is shown in FIG. 4, the speed at the point b is Vb, the speed at the point c is Vc, and the speed at the point c1 is Vc1.
[0017]
FIG. 5 shows the conveyance speed of the rolled material 1 by the pinch roll 5. Vb, Vc, and Vc1 indicate the speed of the mold 2 shown in FIG. The pinch roll 5 conveys the rolling material 1 at the same speed as the moving speed of the mold 2 by the reciprocating crank device 4 during the rolling-down period by the crank device 3. That is, when the reduction starts, as with the mold 2, it becomes Vb, reaches the maximum speed Vc, then reaches the reduction end speed Vc 1, and then reaches the next reduction start speed Vb at its own speed. The period from the rolling start speed Vb to the next rolling start speed Vb is defined as one cycle of the pinch roll, and the moving distance of the rolled material 1 during this one cycle is set to L, and this L is the effective rolling of the mold 2 shown in FIG. The pinch roll 5 is controlled so as to be the length L0 or less. As a result, the rolled material 1 is reduced by a length L during one cycle of the pinch roll 5 (this is the same length as one cycle of the crank device 3).
[0018]
1A shows the state at point a in FIG. 2, FIG. 1B shows the state of reduction from point b to point c1 in FIG. 2, and FIG. 1C shows the state at point d in FIG. . By repeating the states of (A), (B), and (C), rolling down is performed one by one by length L.
[0019]
Next, a second embodiment will be described. FIG. 6 is a diagram showing the configuration of the second embodiment. 2nd Embodiment has the two-dimensional crank apparatus 8, and drives the metal mold | die 2 not only to an up-down direction but to the front-back direction (conveyance direction and its reverse direction). That is, the two-dimensional crank device 8 has a mechanism having both the crank device 3 and the reciprocating crank device 4 of the first embodiment. The two-dimensional crank device 8 moves up and down and back and forth by supporting the rotating body 9 eccentrically. Although the operation is the same as that of the crank device 3 and the reciprocating crank device 4, the vertical amplitude and the front-rear amplitude are the same. Except for the crank device 8, the second embodiment is the same as the first embodiment.
[0020]
Next, a third embodiment will be described. FIG. 7 is a diagram showing a configuration of a crank type width reduction press according to the third embodiment. The width molds 12 are provided on both sides in the width direction with the rolled material 1 interposed therebetween, and the width mold 12 presses the rolled material 1 in the width direction by the width crank device 13. The width mold 12 and the width crank device 13 are reciprocated in the rolling material flow direction by a reciprocating width crank device 14. The width crank device 13 and the reciprocating width crank device 14 operate in synchronization. The pinch rolls 15 are provided before and after the width mold 12, control the conveying speed of the rolled material 1, and are controlled by a control device (not shown). The conveyance table 16 is provided in the vicinity of the pinch roll 5 and conveys the rolled material 1. Although not shown, the looper 17 is provided on the downstream side of the pinch roll 15 and the conveying table 16 on the downstream side of the width die 12, absorbs the length by making the rolled material 1 into a loop shape, and the rolled material 1 of the subsequent apparatus. It corresponds to the processing speed of. The reciprocating device in the claims corresponds to the reciprocating width crank device 14, and the conveying device corresponds to the pinch roll 15. The operation is almost the same as in the first embodiment.
[0021]
In the above description of the first and third embodiments, the reciprocating device has been described as a crank device. However, the reciprocating device may be reciprocated using a hydraulic cylinder, a ball screw, or the like.
[0022]
【The invention's effect】
As is apparent from the above description, the present invention has the following effects by reducing the mold by the crank device and conveying the rolled material in synchronization with the reciprocating speed at the time of reduction by the conveying device.
{Circle around (1)} Since the rolling material conveying speed does not change greatly, a conveying device such as a large-capacity pinch roll or a conveying table becomes unnecessary.
(2) Since there is no heavy slider like the flying method, a large-capacity swinging device is unnecessary.
There is little vibration in relation to (3) and (2).
(4) By using a looper or the like together, it can be easily connected to subsequent devices.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a first exemplary embodiment of the present invention.
FIG. 2 is a diagram showing a crank angle θ and a reduction range of a crank device.
FIG. 3 is a developed view of FIG. 2 at a crank angle θ.
FIG. 4 is a diagram showing a reciprocating speed of a mold.
FIG. 5 is a diagram illustrating a change in speed of a transport device.
FIG. 6 is a diagram showing a configuration of a second exemplary embodiment of the present invention.
FIG. 7 is a diagram showing a configuration of a third exemplary embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Roll 2 Mold 2a Upper mold 2b Lower mold 3 Crank device 3a Upper crank device 3b Lower crank device 4 Reciprocating crank device 4a Upper reciprocating crank device 4b Lower reciprocating crank device 5 Pinch roll 6 Conveying table 7 Looper 8 Two-dimensional crank device 9 Rotating body 12 Width mold 13 Width crank device 14 Reciprocating width crank device 15 Pinch roll 16 Conveying table

Claims (5)

In the rolling reduction method of the crank-type reduction press, in which the rolled material to be conveyed is lowered from above and below with the die, the die moves at the same speed as the rolled material while it is being reduced, and the rolling material feed speed when not being reduced. A crank-type press method characterized by adjusting L and moving the rolled material at a predetermined distance L in one cycle. A die provided above and below the rolled material, a crank device for reducing each die, and a conveying device for conveying the rolled material, wherein the conveying device is configured to reduce the rolled material through the die. During this period, the mold and the rolled material are moved at the same speed, and when the rolling is not performed, the rolling material feed speed is adjusted to move a predetermined distance L during one cycle, and this distance L is the flow direction of the mold. The crank type reduction press device is characterized in that it is within a length L0 of reduction. In the rolling reduction method of a crank-type reduction press in which the rolled material to be conveyed is reduced with a die from both sides in the width direction, the die moves at the same speed as the rolled material while being reduced, and the rolled material when not being reduced. A crank type pressing method characterized by adjusting a feed rate and moving a rolled material of a predetermined distance L during one cycle. A die provided on both sides in the width direction of the rolled material, a crank device for reducing each die in the width direction, and a conveying device for conveying the rolled material, and the conveying device includes a crank device via the die During the period in which the rolled material is being reduced in the width direction, the mold and the rolled material are moved at the same speed, and when the rolled material is not being reduced, the rolling material feed speed is adjusted to move a predetermined distance L during one cycle. A crank-type press-pressing device, wherein the distance L is within a length L0 of the die in the flow direction. The crank-type pressing machine according to claim 2 or 4, wherein a looper for adjusting the length of the rolled material in a loop shape is provided downstream of the conveying device.

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