JP2014018827A - Straightening press apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a straightening press apparatus capable of easily and accurately straightening even a long material that is complicatedly bent such as a waveform.SOLUTION: A straightening press apparatus 1 straightens a curve of an object 2 to be straightened, by applying a pressing force to the object 2 to be straightened. Pressing machines 5, 5' are disposed for applying the pressing force to the object 2 to be straightened to one side and the other side, respectively, in a direction perpendicular to a direction of feeding the object 2 to be straightened. Also, a pair of movable receiving tools 7', 7'; 7, 7 and a pair of fixed receiving tools 8', 8'; 8, 8 for applying a reaction force against the pressing force from each of the pressing machines 5, 5' to the object to be straightened 2 are disposed in the direction of feeding the object 2 to be straightened, respectively, at intervals with each other.

Description

  The present invention relates to a straightening press apparatus suitable for use in correcting bending of various long welded steel shapes and strip steel plates used in bridges, civil engineering buildings, shipbuilding, and the like.

In general, there is a limit to the size of the shape steel that can be manufactured by rolling, and the shape steel having a size exceeding the limit is assembled by welding. Since various types of welded steels of this type are distorted by internal residual stress caused by welding, deformations such as warping, local bending, and complex bending such as undulations often occur, especially in the long type. .
In addition, the parts that make up various types of welded steel are cut out mainly from a steel plate material using a shearing machine, etc., but even in the case of strip steel plates cut out from this steel plate material, it is unavoidable in the production of the steel plate material. Due to internal residual stress, the above deformation may occur as soon as it is cut out.

  Conventionally, for example, Patent Document 1 proposes that the above-described long welded various shape steels, strip steel plates, and the like that need to be corrected (hereinafter referred to as “objects to be corrected”) can be bent. There is a straightening press device.

JP 2002-66636 A

  The correction press device according to Patent Document 1 includes a press cradle and a press die that moves up and down at a correction position on the press cradle, and an object to be corrected is placed between the press cradle and the press die. The bending is corrected by applying a pressing force from a press die to the correction portion of the object to be corrected.

However, in this straightening press apparatus, the pressing force of the press mold can be applied only to the object to be corrected from the upper side. Therefore, if the bent portion has a convex surface on the upper side, it can be easily corrected. The curved part with a convex surface on the side cannot be corrected as it is, and it is necessary to take measures such as inverting the object to be corrected upside down or using a special corrective bracket, and it is complicated like a waveform that waves up and down. There is a problem that it is difficult to correct straight bends.
In addition, after applying a pressing force from the press mold to the object to be corrected, when the press mold is released from the object to be corrected, the deformation for correction applied to the object to be corrected is slightly restored. Although the springback phenomenon occurs, there is a problem that it is difficult to correct accurately because a pressing force cannot be applied in anticipation of the springback phenomenon.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a straightening press apparatus that can easily and accurately correct even a complicatedly bent long material such as a waveform. To do.

In order to achieve the above object, a correction press device according to the present invention comprises:
A correction press device that corrects the bending of the object to be corrected by applying a pressing force to the object to be corrected,
A pressing machine that applies pressing force to the object to be corrected is arranged on one side and the other side of the direction orthogonal to the feeding direction of the object to be corrected, and a reaction force that counters the pressing force from each pressing machine is corrected. A pair of receivers that act on the object are arranged at intervals in the feed direction of the object to be corrected (first invention).

  In the present invention, it is preferable that the distance between the pair of receivers in the feeding direction of the object to be corrected is variable (second invention).

  In the present invention, the feeding direction of the object to be corrected is a direction along the horizontal X-axis direction, and the pressing machines are preferably arranged to face each other along the horizontal Y-axis direction orthogonal to the horizontal X-axis direction. (Third invention).

  In the present invention, pressing machines that apply a pressing force to the object to be corrected are arranged on one side and the other side in the direction orthogonal to the feeding direction of the object to be corrected. Thus, in the object to be corrected, the pressing force from the pressing machine on one side is applied to the bent portion of the one-side convex surface having a convex surface on one side in the direction orthogonal to the feeding direction, while the feeding direction The pressing force from the pressing device on the other side is applied to the bent portion of the other convex surface having a convex surface on the other side in the direction orthogonal to the other side.

  Moreover, in this invention, a pair of receiving tool which makes the to-be-corrected object act the reaction force which opposes the pressing force from each pressing machine is arrange | positioned at intervals in the feed direction of the to-be-corrected object. Thereby, between a pair of receivers arranged corresponding to the pressing machine on one side, the pressing force from the pressing machine on one side is applied to the curved part of the convex surface on the one side in anticipation of the springback phenomenon. A space for receiving the deformation is formed. Similarly, the pressing force from the other pressing machine was also applied to the bent part of the other convex surface in anticipation of the springback phenomenon between the pair of receivers arranged corresponding to the other pressing machine. A space for receiving the deformation is formed.

  According to the present invention, since a pressing force in anticipation of the springback phenomenon is applied to each of the curved portion on the one side convex surface and the curved portion on the other side convex surface, even a long material that is curved in a complicated manner like a waveform It can be corrected easily and accurately.

  By adopting the configuration of the second invention, since the both end portions are reliably received by the pair of receivers according to the size of the bent portion in the object to be corrected, the bent portion can be corrected more easily and accurately. it can.

  By adopting the configuration of the third invention, the upper part of the apparatus is opened, so that the setting or position correction of the object to be corrected can be performed from above using, for example, a crane or the like. Handling becomes easy and work efficiency can be improved.

The top view of the correction press apparatus which concerns on one Embodiment of this invention AA line sectional view of FIG. Correction operation explanatory diagram (1) Correction operation explanatory diagram (2) The top view of the correction press apparatus which concerns on the modification of this embodiment

  Next, specific embodiments of the correction press apparatus according to the present invention will be described with reference to the drawings.

<Outline explanation of straightening press device>
As shown in FIG. 1, the straightening press apparatus 1 of the present embodiment has a long welded various shape steel, a strip-shaped steel plate, or the like 2 that needs to be straightened (hereinafter referred to as “corrected object 2”). Is to correct the bending of the object 2 to be corrected, and has a transport path 3a for sending the object 2 to be corrected in the horizontal X-axis direction to form the base of the apparatus. A base 3 is provided.
Necessary rollers 4 are installed on the conveyance path 3a of the base 3 in order to smoothly feed the article 2 to be corrected along the horizontal X-axis direction.

<Description of pressing machine>
In the base 3, a pressing machine 5 on one side and a pressing machine 5 ′ on the other side are installed on one side part in the horizontal Y-axis direction orthogonal to the horizontal X-axis direction and the other side part facing the one side part, respectively. ing.
Each of these pressing machines 5 and 5 'is a hydraulic cylinder 5a that can be expanded and contracted in the horizontal Y-axis direction, and a pressing tool 5b that is attached to the tip of the cylinder rod of the hydraulic cylinder 5a and abuts against the object 2 to be corrected. And is disposed so as to face each other along the horizontal Y-axis direction at an intermediate position of the base 3 in the horizontal X-axis direction.
In these pressing machines 5 and 5 ', a pressing force can be applied to the article to be corrected 2 via the pressing tool 5b by the extension operation of the hydraulic cylinder 5a.
In addition, as the pressing tool 5b, the thing of the shape dimension according to the magnitude | size etc. of the width dimension of the to-be-corrected object 2 is selected suitably.

<Description of the receiving device>
In the base 3, receiving support bases 6 and 6 are installed on both sides of the pressing machine 5 on one side in the horizontal X-axis direction. Similarly, on both sides of the pressing machine 5 ′ on the other side in the horizontal X-axis direction. The support support bases 6 'and 6' are installed.
Movable receivers 7 and 7 ′ for applying a reaction force against the pressing force from the pressing machines 5 and 5 ′ to the object to be corrected 2 are mounted on the holder support bases 6 and 6 ′.
In the base 3, fixed receivers 8 and 8 ′ are fixed to one end portion in the horizontal X-axis direction so as to sandwich the conveyance path 3 a, and similarly, the conveyance path 3 a is also sandwiched in the other end part in the horizontal X-axis direction. Thus, the fixed receivers 8 and 8 'are fixed.

  As shown in FIG. 2, a rail portion 6a extends in the horizontal X-axis direction at the top of each support support 6, 6 ', while the top of each movable support 7, 7' A hook portion 7a that can be hooked on the rail portion 6a is formed. By sliding the hook portion 7a along the rail portion 6a, each movable receiver 7 is supported with respect to each receiver support base 6, 6 '. , 7 'can be slid in the horizontal X-axis direction.

<Description of corrective action>
The correction operation of the article 2 to be corrected by the correction press device 1 configured as described above will be described below with reference to FIGS.
In addition, as the to-be-corrected object 2, one side convex curved part 2a (refer FIG. 3 (a), FIG. 4 (a) (b)) which has a convex surface in the horizontal Y-axis direction, and horizontal Y-axis direction Various types of long welds that are bent in a complicated manner like a waveform in which a curved portion 2b (see FIGS. 3B, 4A, 4B) having a convex surface on the other side is repeated continuously. Examples thereof include steel and strip steel plates.
For convenience of explanation, the roller 4 is not shown in FIGS. 3 and 4.

As shown in FIG. 3A, the length in the horizontal X-axis direction of the curved portion 2a on the one-side convex surface of the correction object 2 is relatively long, and the width of the correction object 2 is also relatively wide. In this case, the correction operation is performed using the pressing machine 5 on one side and the pair of fixed receivers 8 ′ and 8 ′ arranged on the other side in the horizontal Y-axis direction at both ends of the base 3.
That is, the pressing device 5 on one side is extended and operated in a state where the pair of fixed receivers 8 ′ and 8 ′ are in contact with both end portions of the curved portion 2 a on the one side convex surface. As a result, the pressing force from the pressing device 5 on the one side is applied to the intermediate portion in the horizontal X-axis direction of the curved portion 2a on the one side convex surface via the pressing tool 5b. The pressing force at this time has a magnitude that allows for the springback phenomenon.
In this way, it is possible to straighten the bent portion 2a of the convex surface on one side.

As shown in FIG. 3B, the length of the curved portion 2b on the other convex surface of the object to be corrected 2 in the horizontal X-axis direction is relatively long, and the width of the object to be corrected 2 is also relatively wide. In this case, the correction operation is performed using the other pressing machine 5 ′ and the pair of fixed receivers 8, 8 arranged on one side in the horizontal Y-axis direction at both ends of the base 3.
That is, the other-side pressing machine 5 ′ is operated to extend in a state where the pair of fixed receivers 8 and 8 are in contact with both end portions of the bent portion 2b of the other-side convex surface. Thereby, the pressing force from the pressing machine 5 'on the other side is applied to the intermediate portion in the horizontal X-axis direction of the bent portion 2b on the other side convex surface via the pressing tool 5b. The pressing force at this time has a magnitude that allows for the springback phenomenon.
Thus, the bent portion 2b of the other convex surface can be straightened.

As shown in FIG. 4A, the length in the horizontal X-axis direction of the curved portion 2a of the one-side convex surface of the correction object 2 is relatively short, and the width of the correction object 2 is also relatively narrow. In this case, the correction operation is performed using the pressing machine 5 on one side and the pair of movable receivers 7 ′ and 7 ′ arranged on the opposite side of the pressing machine 5 on the one side.
That is, the distance between the pair of movable receivers 7 ′ and 7 ′ is adjusted according to the length of the curved portion 2 a on the one side convex surface in the horizontal X-axis direction, and a pair of movable portions are attached to both ends of the curved portion 2 a on the one side convex surface. In a state where the receiving devices 7 ′ and 7 ′ are in contact with each other, the pressing device 5 on one side is extended. As a result, the pressing force from the pressing device 5 on the one side is applied to the intermediate portion in the horizontal X-axis direction of the curved portion 2a on the one side convex surface via the pressing tool 5b. The pressing force at this time has a magnitude that allows for the springback phenomenon.
In this way, it is possible to straighten the bent portion 2a of the convex surface on one side.

As shown in FIG. 4B, the length of the curved portion 2b on the other convex surface of the object to be corrected 2 in the horizontal X-axis direction is relatively short, and the width of the object to be corrected 2 is also relatively narrow. In this case, the correction operation is performed using the other pressing machine 5 'and the pair of movable receivers 7 and 7 arranged on the opposite side of the other pressing machine 5'.
That is, the distance between the pair of movable receivers 7 and 7 is adjusted in accordance with the length in the horizontal X-axis direction of the bent portion 2b on the other convex surface, and a pair of movable receivers are provided at both ends of the curved portion 2b on the other convex surface. In the state where 7, 7 is in contact, the other press 5 'is operated to extend. Thereby, the pressing force from the pressing machine 5 'on the other side is applied to the intermediate portion in the horizontal X-axis direction of the bent portion 2b on the other side convex surface via the pressing tool 5b. The pressing force at this time has a magnitude that allows for the springback phenomenon.
Thus, the bent portion 2b of the other convex surface can be straightened.

<Description of effects>
In the correction press apparatus 1 of the present embodiment, the pressing machines 5 and 5 ′ that apply a pressing force to the object to be corrected 2 are orthogonal to the feed direction (horizontal X-axis direction) of the object to be corrected 2 (horizontal Y). (Axial direction) are arranged on one side and the other side, respectively. Thereby, in the to-be-corrected object 2, the pressing force from the pressing machine 5 on one side is applied to the curved portion 2a on the one side convex surface, while the other side is applied to the curved portion 2b on the other side convex surface. The pressing force from the pressing machine 5 'is applied.

  Further, the movable receivers 7, 7, 7 ', 7' and the fixed receivers 8, 8, 8 ', 8 for causing the reaction object 2 to act against the pressing force from the pressing machines 5, 5'. ′ Is arranged in the feeding direction of the article 2 to be corrected with a space therebetween. Thereby, between one pair of movable receivers 7 'and 7' arrange | positioned corresponding to the one press 5 and between a pair of fixed receivers 8 'and 8', it is one press respectively. A space S is formed to receive deformation when the pressing force from 5 is applied to the curved portion 2a on the one-side convex surface in anticipation of the springback phenomenon (see FIGS. 4 (a) and 3 (a)). Similarly, between the pair of movable receivers 7, 7 and the pair of fixed receivers 8, 8 arranged corresponding to the other side pressing machine 5 ′, respectively, from the other side pressing machine 5 ′. A space S is formed to receive deformation when the pressing force is applied to the bent portion 2b of the convex surface on the other side in anticipation of the springback phenomenon (see FIGS. 4B and 3B).

  According to the straightening press apparatus 1 of the present embodiment, a pressing force in anticipation of the springback phenomenon is applied to each of the bent portion 2a on the one side convex surface and the bent portion 2b on the other side convex surface, so that it has a complex waveform. Even a long material bent in a straight line can be corrected easily and accurately.

  As mentioned above, although the correction press apparatus of this invention was demonstrated based on one embodiment, this invention is not limited to the structure described in the said embodiment, The structure is suitably changed in the range which does not deviate from the meaning. Is something that can be done.

For example, in the above-described embodiment, the example in which the pressing machine 5 on one side and the pressing machine 5 ′ on the other side are disposed so as to face each other across the conveyance path 3a has been described. However, the present invention is not limited to this. Instead, as shown in FIG. 5, the one-side pressing machine 5 and the other-side pressing machine 5 ′ are offset so as to be separated from each other along the feeding direction of the article 2 (horizontal X-axis direction). There may be a mode in which the amount ΔT is arranged.
This offset amount ΔT is the same as when the pressing machine 5 'on one side overlaps the pressing machine 5' on the other side as viewed from the direction (horizontal Y-axis direction) orthogonal to the feed direction of the article 2 to be corrected. It is possible to set freely within a range that is allowed in terms of structure including the case of not making it.

  The straightening press apparatus of the present invention has a characteristic that it can be easily and accurately corrected even with a long and complicated material such as a corrugated shape. It can be suitably used for bending correction.

DESCRIPTION OF SYMBOLS 1 Correction press apparatus 2 Correction object 5, 5 'Press machine 7, 7' Movable receiver 8, 8 'Fixed receiver

Claims (3)

A correction press device that corrects the bending of the object to be corrected by applying a pressing force to the object to be corrected,
A pressing machine that applies pressing force to the object to be corrected is arranged on one side and the other side of the direction orthogonal to the feeding direction of the object to be corrected, and a reaction force that counters the pressing force from each pressing machine is corrected. An orthodontic press apparatus characterized in that a pair of receivers that act on an object are arranged at intervals in the feed direction of the object to be corrected.   The correction press apparatus according to claim 1, wherein an interval between the pair of receivers in a feeding direction of the correction object is variable. The feeding direction of the object to be corrected is a direction along the horizontal X-axis direction, and each of the pressing machines is arranged to face each other along a horizontal Y-axis direction orthogonal to the horizontal X-axis direction. Straightening press equipment.

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