JP2008110351A - Release mechanism and straightening apparatus provided with the release mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a release mechanism by which release operation can be performed with good responsiveness with its simple composition and also working environment can be improved by its low noise. <P>SOLUTION: When a release signal is sent to a servomotor 410 by linking with pressing work by a pressing part 300, the servomotor 410 is rotated and the output member 421 of a ball screw part 420 is moved into a release direction. An arm member 431 is rotated by a prescribed amount with the movement of the output member to the release direction and an eccentric cam 434 is rotated by a prescribed amount. A hydraulic cylinder 440 is lifted in the release direction by the amount of lift corresponding to an angular position because the eccentric cam 434 is arranged eccentrically to the center of rotation of a shaft 433. An upper frame 241 is pivotally moved in the release direction around a pivot 245 and a workpiece 2 is released because the output member 441 of the hydraulic cylinder 440 is connected to the upper frame 241 in a connecting part 442. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a work release mechanism used for a correction processing apparatus (leveler) for correcting (correcting) deformation of a work such as a curl, and a correction processing apparatus including the release mechanism.

  For example, when pressing a workpiece wound in a coil shape (for example, a long plate-shaped metal material), it is carried into the pressing device at a predetermined feed rate while correcting the curl. Various so-called leveler feeders have been proposed as devices for this purpose.

  In the press working apparatus, when the workpiece is positioned, the workpiece is released (released) from the clamped state of the leveler feeder in the plane or at least in the workpiece conveyance direction from the viewpoint of accurate positioning and prevention of deformation of the workpiece. The leveler feeder is required to be free. Similarly, it is required to release the workpiece from the clamped state of the leveler feeder even during machining involving deformation of the workpiece.

  In addition, the leveler part and the feeder part of the leveler feeder are generally configured to include a roll that abuts on the surface of the work and a roll that abuts on the back surface of the work. When inserting the tip of the workpiece into the leveler part of the leveler feeder during plate (threading), or when performing maintenance such as cleaning of the roll as necessary, a roll disposed on the workpiece surface side It is required to be configured so as to be able to open the mouth so as to be relatively separated from the roll disposed on the back side.

  From this point of view, for example, in Patent Document 1 and Patent Document 2, a reciprocating motion of an actuator such as a cylinder is used to raise a frame that supports a roll disposed on the workpiece surface side. Describes a release operation or a mouth opening operation by separating the roll disposed on the surface side of the workpiece from the roll disposed on the back surface side.

Further, in Patent Document 3, an eccentric shaft is rotated by an electric motor, and a frame that supports a roll disposed on the workpiece surface side can be raised by utilizing the eccentric amount. The release operation is described by separating the roll disposed on the rear side from the roll disposed on the back surface side.
JP-A-10-94830 Japanese Utility Model Publication No. 5-70719 JP-A-5-88706

  Since the devices described in Patent Document 1 and Patent Document 2 described above cause the cylinder to perform a release operation in conjunction with press processing performed in a relatively short cycle, the switching sound of the solenoid valve and the collision noise of the cylinder end are loud. There is a demand to improve the working environment by suppressing noise.

  Also, in the case of a cylinder, there is a relatively long delay time from the release of the release signal to the leveler feeder to clamp the workpiece, so there is a relatively long delay time until the operating pressure actually rises to the specified value. However, it is not possible to sufficiently meet the demand for an increase in the number of strokes per unit time (high speed).

  As described in Patent Document 3, the one that rotates the eccentric shaft by the electric motor to perform the release operation is predetermined as the eccentric amount corresponding to the release operation, and the eccentric amount is changed to change the eccentric amount. Since it is necessary to replace the shaft with an eccentric shaft with a different amount, it is difficult to perform a large opening operation. Therefore, for example, when cleaning a roll or passing a work through a leveler feeder (threading), an electric motor It is necessary to provide a mechanism for opening the mouth independently of the release mechanism that rotates the eccentric shaft by the above, which makes the device larger and more complicated, cost, installation, assembly, maintenance, etc. There is a problem in terms of.

  The present invention has been made in view of such circumstances, and provides a release mechanism that can perform a release operation with high responsiveness while being relatively simple in structure, and can improve a work environment with low noise. The purpose is to do. It is another object of the present invention to provide a correction processing apparatus capable of performing the above-described release operation while having a relatively simple configuration and capable of performing a mouth opening operation sufficient for threading and maintenance. .

For this reason, the present invention
At least one surface-side work roll that contacts the surface of the work, and at least one back-side work that has a rotation center axis that is in contact with the back surface of the work and is offset from the rotation center axis of the surface-side work roll in the workpiece transport direction A release mechanism used in a straightening processing device for performing a predetermined straightening process on a coiled workpiece by passing between a roll and a roll,
First conversion means for converting the rotational motion of the electric motor in the forward and reverse directions into the reciprocating motion of the output member and outputting the reciprocating motion;
Second conversion means for converting the reciprocating motion of the output member output by the first conversion means into the rotational motion of the release rotating shaft;
A reciprocating member that is reciprocated using an eccentric operation by a rotational movement of an eccentric mechanism disposed on the release rotating shaft;
Including
Using the reciprocating motion of the reciprocating member, a part of the reciprocating member is connected to support the front side work roll, the front side work roll supporting member, and the back side work roll supporting the back side work roll. The workpiece is clamped for execution of the straightening process, and the workpiece is moved from the clamped state by being displaced relative to the support member and changing the distance between the front-side work roll and the back-side work roll. A release mechanism configured to switch between a release state and a release state is provided.

  The electric motor may be a servo motor. The first conversion means may include a ball screw mechanism.

Moreover, the release mechanism according to the present invention is:
The reciprocating member comprises a reciprocating actuator;
At least when the correction process is stopped, by extending the output member of the reciprocating actuator, the front-side work roll support member is displaced relative to the back-side work roll support member, and the front-side work roll and the A mouth opening mechanism that opens between the back-side work rolls can be included.

The correction processing apparatus according to the present invention is
At least one surface-side work roll that contacts the surface of the work, and at least one back-side work that has a rotation center axis that is in contact with the back surface of the work and is offset from the rotation center axis of the surface-side work roll in the workpiece transport direction A straightening processing apparatus for performing a predetermined straightening process on a workpiece by passing between the rolls and includes a release mechanism according to the present invention.

The correction processing apparatus according to the present invention is
A lower taper block on which the surface-side work roll is supported and having a tapered surface on the upper surface;
An upper taper block having a taper surface facing the taper surface of the lower taper block on its lower surface;
A shaft-like screwing member screwed into the upper taper block;
Comprising
By rotating the screwing member by an electric motor and reciprocating the upper taper block along the screwing member, a taper surface on the lower surface of the upper taper block and the lower taper block facing the taper surface By adjusting the relative position of the upper surface of the upper work roll with the taper surface, it is possible to include a reduction mechanism configured to adjust the amount of reduction of the upper work roll with respect to the work.

  According to the release mechanism according to the present invention, the release operation can be performed with high responsiveness while having a relatively simple configuration, and the working environment can be improved with low noise. Further, if the release according to the present invention is used, the release operation can be performed while the configuration is relatively simple, and the opening operation sufficient for the threading and maintenance can be performed. A correction processing apparatus can be provided.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the accompanying drawings. The embodiment described below shows an example of the present invention, and the present invention is not limited to the embodiment.

  As shown in FIG. 1, an automatic press device 1 according to the present embodiment includes an uncoiler unit 100 that sends a coiled workpiece 2 to a leveler feeder unit 200 that is downstream of a machining process, and a workpiece 2 that is fed from the uncoiler unit 100. The leveler feeder unit 200 that feeds the workpiece 2 to the press unit 300 downstream of the machining process while correcting deformation such as warping of the workpiece 2 and press work on the workpiece 2 fed from the leveler feeder unit 200. And a press unit 300.

  The uncoiler unit 100 winds and supports the long workpiece 2 in a coil shape, and is rotated by an electric motor or the like to feed the workpiece 2 to the leveler feeder unit 200 by a predetermined amount. The side guide 102 that supports the wound work 2 from both sides to prevent the roll from collapsing, the work 2 at the time of threading (threading) and the rewinding of the tip of the work 2 during unwinding, and the looseness of the coil And a coil presser 103 for preventing injury.

  In the uncoiler unit 100, the operation of each unit is controlled by the uncoiler control device 104. For example, when threading the workpiece 2 (see FIG. 5 and the like), the uncoiler control device 104 from an operator or the like is used. Control of the operation of each unit is performed based on an input instruction or the like.

  As shown in FIG. 2, the leveler feeder unit 200 includes an opener 210, a side guide 220, a pinch roll unit 230, a work roll unit 240, and a feed roll unit 250.

  The opener 210 guides the feed of the tip of the workpiece 2 from the uncoiler unit 100 to the level feeder unit 200 by causing the hydraulic cylinder 211 to swing around the pivot 212 when the workpiece 2 is threaded, as shown in FIG. As described above, the hydraulic cylinder 211 is driven to move the opener 210 upward, and the end bending process of the tip of the workpiece 2 is performed at the time of threading.

  The side guide 220 guides the side surface of the workpiece 2 fed to the pinch roll unit 230 of the leveler feeder unit 200 from both sides to suppress the lateral shaking of the workpiece 2, and is rotatable to guide both side surfaces of the workpiece 2. A roll 221 and the like are included.

  When the workpiece 2 is threaded, the pinch roll unit 230 has an upper (front side, the same applies hereinafter) pinch roll 231 and a lower (rear side) near the tip of the workpiece 2 sent from the uncoiler unit 100. The same applies hereinafter) The workpiece 2 is clamped by being pinched by the pinch roll 232 with a predetermined pressing force, and the workpiece 2 is sent to the downstream work roll portion 240 by the rotational force of the lower roll 232 that is rotationally driven. It is configured to be able to.

  The lower pinch roll 232 is rotationally driven as desired via the electric motor 280 or the like in accordance with a drive signal from the control device 290, but the upper pinch roll 231 is rotatably attached to the link member 233.

  As shown in FIGS. 2 and 3, the link member 233 is supported by the upper frame 241 of the work roll unit 240 so as to be swingable through a pivot 234, and the vicinity of the other end of the link member 233 is The output member 237 of the hydraulic cylinder 236 is connected via the pivot 235.

  Accordingly, the clamping operation for the workpiece 2 between the upper pinch roll 231 and the lower pinch roll 232 in the pinch roll unit 230 is performed to prevent the reverse phenomenon of the workpiece 2 at the time of automatic release execution or power shutdown. This is performed by pushing down the output member 237 of the hydraulic cylinder 236 downward with a predetermined pressing force. In addition, at least one of the upper pinch roll 231 and the lower pinch roll 232 is configured to include a one-way bearing, and the pinch roll unit 230 according to the present embodiment has the above-described clamping function and also serves as a backstop roll. It also has functions.

  The work roll unit 240 includes a plurality of upper work rolls 242 disposed on an upper frame (corresponding to a front surface side work roll support member) 241 and driven by an electric motor 280 and the like, and a lower frame (on the back side work roll support member). Equivalent) A plurality of lower work rolls 244 arranged at 243 and driven by the electric motor 280 or the like are offset in the respective rotation center axes in the conveying direction of the work 2 and are alternately staggered as shown in FIG. In a staggered manner).

  A plurality of upper backup rolls 242A for supporting a reaction force received by the upper work roll 242 and suppressing bending of the upper work roll 242 are disposed on the back surface of the upper work roll 242 and the lower work roll A plurality of lower backup rolls 244 </ b> A for supporting the reaction force received by the lower work roll 244 and suppressing the bending of the lower work roll 244 are disposed on the back surface of the 244.

  In the work roll unit 240 having such a configuration, the upper work roll 242 and the lower work roll 244 cooperate with each other so that the work 2 passing between the upper work roll 242 and the lower work roll 244 is wound around the work 2. Correct (correct) the deformation.

  The rotation drive of the upper work roll 242 and the lower work roll 244 is controlled by the control device 290 so as to be interlocked (synchronized) with the rotation of the feed roll unit 250 described later.

Here, although the details will be described later, the leveler feeder unit 200 according to the present embodiment is provided with an automatic release mechanism 400, a mouth opening mechanism 500, and a reduction mechanism 600.
That is, in the press unit 300 disposed on the downstream side of the processing step, it is necessary to position the workpiece 2 sent from the leveler feeder unit 200 prior to the press processing, but accurate positioning and deformation of the workpiece 2 are necessary. From the standpoint of prevention, the workpiece 2 is automatically moved from the work roll unit 240 and the feed roll unit 250 of the leveler feeder unit 200 in the plane or in the conveyance direction of the workpiece 2 in conjunction with the positioning operation. It is required to release (release) it to make it free. Similarly, even during the press working with deformation of the work 2, it is required to automatically release the work 2 from the work roll unit 240 and the feed roll unit 250 in conjunction with the press work. An automatic release mechanism 400 is provided as a mechanism for this purpose.

  Further, when the workpiece 2 is threaded (threaded), the leveler feeder unit 200 is inserted when the tip of the workpiece 2 is inserted into the pinch roll unit 230, the work roll unit 240, or the like of the leveler feeder unit 200. Accordingly, when performing maintenance such as cleaning of each roll or the like, each upper roll (upper pinch roll 231 and upper work roll 242) and each lower roll (lower pinch roll 232 and lower work roll 244) are relatively It is required to be able to perform an opening operation that allows a large opening (separation). As a mechanism for this purpose, a mouth opening mechanism 500 is provided.

  Further, the leveler feeder unit 200 is subject to differences in various factors such as the plate thickness, material, and deformation size of the workpiece 2 when the workpiece roll 240 is subjected to deformation correction (correction) processing. It is required that the relative position of the upper work roll 242 with respect to the lower work roll 244 is displaced in the vertical direction so that the reduction amount with respect to the work 2 can be adjusted so that the optimum correction process can be performed. As a mechanism for this purpose, a reduction mechanism 600 is provided.

  The workpiece 2 corrected to a predetermined level in the leveler feeder unit 200 is carried into a feed roll unit 250 provided on the downstream side of the machining process. The feed roll unit 250 performs press processing of the press unit 300 that performs press processing. In conjunction with the operation, the workpiece 2 can be fed to the press unit 300 at a predetermined feed speed that is set. The feed roll unit 250 includes an upper feed roll 252 supported by the upper feed roll support member 251 and a lower feed roll 254 supported by the lower frame 253.

  The upper feed roll support member 251 is supported by the upper frame 255 so as to be slidable in the vertical direction, and is connected to a ball screw portion 256 attached to the upper frame 255. The control device drives the electric motor 257 and the like so that the workpiece 2 can be sandwiched with a predetermined pressing force, and moves the upper feed roll support member 251 and the upper feed roll 252 downward via the ball screw portion 256. 290 controls the drive.

  When the workpiece 2 is automatically released in conjunction with the press work of the press unit 300, the control device 290 drives the electric motor 257 and the like, and the upper feed roll support member 251 via the ball screw unit 256. As a result, the upper feed roll 252 is moved upward to release the workpiece 2.

  On the downstream side of the feed roll unit 250, the actual length dimension of the workpiece 2 sent by the feed roll unit 250 is measured, and an error caused by slipping or the like is subjected to positioning processing or press processing in the press unit 300. A measuring roll 260 for obtaining data for feedback is provided.

  On the downstream side of the measuring roll 260, a lubricant such as lubricating oil is applied to the work 2 in order to prevent the occurrence of die galling or the like due to resistance when the work 2 is pressed (for example, A lubricant application device 270 for application) is provided. The lubricant application device 270 can be omitted.

  Then, the workpiece 2 to which the lubricant is applied in the lubricant application device 270 is sent to the press unit 300 on the downstream side, and press processing or the like is performed in the press unit 300.

  Here, the automatic release mechanism 400 of the leveler feeder unit 200 according to the present embodiment will be described in detail.

  As shown in FIG. 2, the automatic release mechanism 400 includes a servo motor 410, a ball screw portion 420, an eccentric cam portion 430, and a hydraulic cylinder 440.

  As shown in FIGS. 2 and 3, the ball screw portion 420 is pivotally attached to the main body frame 201 via a pivot 422, and converts the forward / reverse rotational motion of the servo motor 410 into the reciprocating motion of the output member 421. Therefore, the output member 421 is rotatably connected to an arm member 431 that is an input element to the eccentric cam portion 430 via a connecting portion 432.

  In the eccentric cam portion 430, when the input from the arm member 431 is transmitted to the shaft 433, and the shaft 433 is rotated, the eccentric cam 434 attached to the shaft 433 is rotated. ing. As shown in (2) of FIG. 2 and FIG. 3, the eccentric cam 434 is rotated with a predetermined eccentricity from the center of rotation of the shaft 433, so that the eccentric cam 434 swings around the eccentric cam 434 via a bearing or the like. The entire hydraulic cylinder 440 that is movably attached is reciprocated in the directions of arrows C and D in the figure.

  That is, in the present embodiment, even when the output member 441 of the hydraulic cylinder 440 is not reciprocated, the entire hydraulic cylinder 440 is reciprocated according to the lift amount corresponding to the rotational position of the eccentric cam 434. .

  The tip of the output member 441 of the hydraulic cylinder 440 is rotatably attached to an upper frame (corresponding to a surface-side work roll support member) 241 of the work roll unit 240 constituting the leveler feeder unit 200 via a connecting part 442. It has been.

  The upper frame 241 is pivotally connected to a pivot 245 attached substantially integrally to the main body frame 201, and the connecting portion 442 side is centered on the pivot 245 in the directions of arrows E and F in the figure. It can be pivoted.

Here, the automatic release operation according to the present embodiment will be described below.
In the present embodiment, when a release signal is sent to the servo motor 410 in conjunction with the press work or the like in the press unit 300, the servo motor 410 is rotated in a predetermined manner, and the output member 421 of the ball screw unit 420 according to the rotation. Is moved from the clamp position A to the release position B in FIG. 2 or (1) of FIG. As the output member 421 moves in the release direction, the arm member 431 is rotated by a predetermined amount in the counterclockwise direction in the drawing, so that the eccentric member that is attached to the arm member 431 substantially integrally. The cam 434 is also rotated by a predetermined amount counterclockwise in the drawing.

  When the eccentric cam 434 is rotated counterclockwise in FIG. 2 or (1) in FIG. 3, the eccentric cam 434 is arranged eccentrically from the rotation center of the shaft 433, so that the angular position The entire hydraulic cylinder 440 is lifted in the release direction indicated by the arrow C in the drawing by a lift amount corresponding to the above.

  Since the output member 441 of the hydraulic cylinder 440 is connected to the upper frame 241 at the connecting portion 442, the upper frame 241 is pivoted in the release direction indicated by the arrow E in FIG. Become.

  The pivoting of the upper frame 241 in the release direction is performed by moving the upper work roll 242 of the work roll unit 240 attached to the upper frame 241 in the release direction indicated by the arrow E in FIG. Therefore, the work 2 is released. As described above, in conjunction with the release operation of the work roll unit 240, the upper feed roll 252 of the feed roll unit 250 is separated from the lower feed roll 254 by a mechanism different from the automatic release mechanism 400. The workpiece 2 is automatically released by moving in the direction of separation. Here, since the upper pinch roll 231 of the pinch roll part 230 is pivotally attached to the upper frame 241 via the link member 233, even when the upper frame 241 pivots in the release direction, The workpiece 2 can be pressed to a predetermined position while being maintained at this position, whereby the workpiece 2 can be prevented from returning backward.

  When the release operation is canceled and the workpiece 2 is corrected and conveyed, the servo motor 410 is rotated by a predetermined amount in the direction opposite to that during the release operation, and the output member 421 of the ball screw unit 420 is 2 or moved to the clamp (release release) position A in (1) of FIG. As the output member 421 moves to the clamp (release release) position A, the arm member 431 is rotated by a predetermined amount clockwise in FIG. 2 or (1) in FIG. The eccentric cam 434 attached to the arm member 431 is also rotated by a predetermined amount clockwise in the drawing.

  When the eccentric cam 434 is rotated in the clockwise direction in the drawing, the eccentric cam 434 is arranged eccentrically from the rotation center of the shaft 433, so that the hydraulic cylinder 440 is lifted by a lift amount corresponding to the angular position. The whole is lowered in the release release direction indicated by arrow D in the drawing.

  Since the output member 441 of the hydraulic cylinder 440 is connected to the upper frame 241 at the connecting portion 442, the upper frame 241 is pivoted about the pivot 245 in the release release direction indicated by arrow F in FIG. It will be.

  Accordingly, in order to pivot the upper work roll 242 of the work roll portion 240 attached to the upper frame 241 in the release release direction indicated by the arrow F in the figure, the work 2 is brought into contact with a predetermined pressing force to correct the work 2. The process can be returned to a possible state. In conjunction with the release release operation of the work roll unit 240, the upper feed roll 252 of the feed roll unit 250 is, as described above, the lower feed roll 254 by a mechanism different from the automatic release mechanism 400. The workpiece 2 is moved to a state in which the workpiece 2 can be conveyed.

  As described above, in the present embodiment, the rotational motion of the servo motor 410 is converted into the reciprocating motion of the output member 421 of the ball screw portion 420, and the release motion is performed using the reciprocating motion. As described above, the release operation using the cylinder can be performed with good responsiveness, and the working environment can be improved with low noise.

  By the way, in the present embodiment, the output member 421 of the ball screw portion 420 is connected to the arm member 431 and the release operation is performed using the eccentric cam 434. Therefore, the arm length is appropriately selected. In addition, by utilizing the high efficiency of the eccentric cam 434, the entire hydraulic cylinder 440 can be reciprocated with a relatively small torque to switch between the clamp operation and the release operation. It is possible to reduce the size, which is advantageous for downsizing, power saving, and cost reduction of the apparatus. Further, since the lift amount can be easily changed within the range of the maximum lift amount of the eccentric cam 434, the degree of freedom of application of the present apparatus with respect to the thickness of the workpiece 2 can be greatly increased.

  Here, the ball screw portion 420 corresponds to the first conversion means according to the present invention, and the arm member 431 corresponds to the second conversion means according to the present invention. Further, the shaft 433 corresponds to the release rotating shaft according to the present invention, the eccentric cam 434 corresponds to the eccentric mechanism according to the present invention, and the entire hydraulic cylinder 440 corresponds to the reciprocating member according to the present invention. become.

Next, the opening mechanism 500 according to the present embodiment will be described in detail.
As described above, the opening mechanism 500 is used for each upper roll (the upper pinch roll 231 and the upper work roll 242) when threading the workpiece 2 or performing maintenance such as cleaning of each roll. ) And the respective lower rolls (lower pinch roll 232 and lower work roll 244) are subjected to a reciprocating motion of the output member 441 of the hydraulic cylinder 440 in this embodiment. To use.

  That is, in the opening operation, when an opening start signal is sent from the control device 290 in accordance with an instruction from an operator or the like, the hydraulic cylinder 440 causes the output member 441 to move to the arrow C in FIG. 2 or (1) in FIG. Stretch in the direction. At this time, since the tip of the output member 441 of the hydraulic cylinder 440 is rotatably attached to the upper frame 241 of the work roll unit 240 constituting the leveler feeder unit 200 via the connecting unit 442, the output In conjunction with the extension operation of the member 441, the upper frame 241 is pivoted with a relatively large amount of movement in the direction of opening of the arrow E in the figure around the pivot 245.

  Such pivoting of the upper frame 241 in the opening direction has a relatively large reciprocating stroke of the output member 441 of the hydraulic cylinder 440. Therefore, the upper rolls (231, 242) disposed on the upper frame 241 have a relatively large stroke. ) Are relatively separated from the lower rolls (232, 244), so that a sufficiently large space is provided for maintenance such as threading (threading plate) and cleaning of each roll. It can be formed between the rolls (231, 242) and the respective lower rolls (232, 244).

  After completion of maintenance work such as threading (threading) and cleaning of each roll, etc., when a mouth opening end signal is sent from the control device 290 in accordance with an instruction from an operator or the like, the mouth opening operation is ended. The output member 441 of the hydraulic cylinder 440 is contracted in the direction of arrow D in the figure. As a result, the upper rolls (231, 242) arranged on the upper frame 241 are moved in the direction of arrow F in the figure, and thus contact the work 2 with a predetermined pressing force to correct the work 2. The processing is returned to a possible state.

  Here, in the present embodiment, the hydraulic cylinder 440 corresponds to a reciprocating actuator according to the present invention.

Next, the reduction mechanism 600 in the leveler feeder unit 200 according to the present embodiment will be described.
As described above, when the work roll unit 240 performs the correction process on the work 2, the reduction mechanism 600 can perform the optimal correction process according to the difference in the thickness of the work 2 to be loaded. In this manner, the relative position of the upper work roll 242 with respect to the lower work roll 244 is displaced in the vertical direction to adjust the amount of reduction with respect to the work 2.

As shown in FIG. 4, the reduction mechanism 600 according to the present embodiment receives trapezoidal screw portions 601 and 602 and control signals sent from the control device 290 in response to an increase (decrease) reduction amount of the operator or the like. An electric motor 610 that is driven on the basis of the rotational force to the trapezoidal screw portions 601 and 602, and is screwed into the trapezoidal screw portions 601 and 602, respectively, and approaches or separates from each other as the trapezoidal screw portions 601 and 602 rotate. 4 includes upper tapered blocks 603, 604 configured to be movable in the left-right direction in FIG. 4 and tapered surfaces 605A, 606A that face and contact the tapered surfaces 603A, 604A of the upper tapered blocks 603, 604. Lower taper blocks 605 and 606, and the lower backup blocks 2 2A and upper work roll 242 are supported.
As shown in FIG. 4, the lower taper blocks 605 and 606 are supported by the upper frame 241 via through bolts 608, and the lower taper blocks 605 and 606 are supported by the upper member via a support member 607. A backup roll 242A and an upper work roll 242 are supported. Reference numeral 609 denotes a spring that is inserted into the through bolt 608 and elastically supports the lower taper blocks 605 and 606, the support member 607, and the like on the upper frame 241.

  Here, the trapezoidal screw portion 601 and the trapezoidal screw portion 602 are configured to be threaded in opposite directions on a common shaft 611, and the shaft 611 is placed in a predetermined direction by the electric motor 610. When the fixed amount of rotation is performed, the upper taper block 603 screwed to the trapezoidal screw portion 601 and the upper taper block 604 screwed to the trapezoidal screw portion 602 move on the shaft 611 in a direction approaching each other. When moved by a predetermined amount and rotated by a predetermined amount in the direction opposite to the predetermined direction, the upper taper block 603 and the upper taper block 604 are moved by a predetermined amount on the shaft 611 in a direction away from each other. It has become.

  Therefore, for example, when the upper taper block 603 (604) is moved in the right (left) direction in FIG. 4, the taper surface is in contact with the taper surface 603A (604A) of the upper taper block 603 (604). A thrust force directed in the right (left) direction in the drawing acts on 605A (606A), but due to the balance of the force on the tapered surface 605A (606A), the tapered surface 605A (606A) of the lower tapered block 605 (606). 4), a downward force in FIG. 4 acts, and the lower taper block 605 (606) is moved downward by a predetermined amount in FIG.

  An upper backup roll 242A and an upper work roll 242 are supported by the lower taper blocks 605 and 606 via a support member 607, and the lower taper blocks 605 and 606 are moved downward in FIG. The upper backup roll 242A and the upper work roll 242 are also moved by a predetermined amount downward in FIG. Thereby, the amount of reduction with respect to the workpiece | work 2 between the upper work roll 242 and the lower work roll 244 rotatably fixed to the lower frame 243 can be increased predetermined.

  Conversely, when the upper taper block 603 (604) is moved in the left (right) direction in the figure, the thrust force acting on the taper surface 605A (606A) is weakened, and the upper taper block 603 ( 604) moves upward in FIG. Accordingly, the upper backup roll 242A and the upper work roll 242 are moved upward by a predetermined amount in the drawing, and the amount of reduction with respect to the work 2 can be reduced by a predetermined amount.

  Therefore, according to the rolling-down mechanism 600 according to the present embodiment, the optimum rolling-down amount can be adjusted according to demand or according to differences in the thickness, material, etc. of the workpiece 2 with a relatively simple configuration. Therefore, a desired correction process can be executed.

  By the way, although the servo motor 410 has been described in the present embodiment, the present invention is not limited to this, and includes at least one electric motor. Any other electric motor can be adopted as long as it satisfies the required conditions.

  Further, the ball screw portion 256, the ball screw portion 420, the trapezoidal screw portions 601, 602, etc. are not limited to ball screws or trapezoidal screws, but convert the rotational motion of an electric motor or the like into a reciprocating motion and output it. Anything that can be used is acceptable. For example, the output member can be configured to reciprocate by a combination of an electric motor and a gear mechanism (for example, a pinion gear and a rack gear).

  Further, each hydraulic cylinder is not limited to one driven by hydraulic pressure, but is a reciprocating actuator that can reciprocate an output member using other fluid pressure or electromagnetic force, and is required. Other actuators can be employed as long as the conditions are satisfied.

  In addition, in the release mechanism 400 according to the present embodiment, the upper frame (front-side work roll support member) with respect to the lower frame (rear-side work roll support member) 243 using the reciprocating motion of the entire hydraulic cylinder 440. Although it has been described that the work 2 is released by pivoting 241, the present invention is not limited to this, and the upper work roll is connected to a part of the reciprocating member using the reciprocating motion of the reciprocating member. As long as the upper work roll support member that supports the lower work roll support member that supports the lower work roll is displaced relative to the lower work roll support member, it is included in the scope of the present invention.

  That is, for example, the upper frame 241 that supports the upper work frame 242 is supported by, for example, a linear guide that is slidable in the vertical direction, and the upper frame 241 is moved using the reciprocating motion of the entire hydraulic cylinder 440. The case where the lower work roll 244 is configured to be relatively displaced with respect to the lower frame 243 is also included in the scope of the present invention.

  Moreover, although the correction | amendment apparatus of the workpiece | work supplied to a press machine was demonstrated in this Embodiment, this invention is not limited to this, It is limited to a coil-shaped workpiece | work (other than a press work). It may be applied to a processing apparatus that performs a predetermined process (for example, plastic processing such as forging, rolling, and punching) on other materials such as resin that need correction processing. .

  Of course, various modifications can be made without departing from the scope of the present invention.

1 is a diagram schematically showing an overall configuration of an automatic press device according to an embodiment of the present invention. It is a figure for demonstrating the leveler feeder part which concerns on embodiment same as the above. (1) is the front view which expands and shows the automatic release mechanism which concerns on embodiment same as the above, (2) is the side view which looked at a part of (1) from the X direction. It is a partial enlarged view for demonstrating the reduction mechanism which concerns on embodiment same as the above. It is a flowchart for demonstrating the procedure of the threading (threading board) which concerns on embodiment same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Automatic press processing apparatus 200 Leveler feeder part 240 Work roll part 241 Upper frame (equivalent to a surface side work roll support member)
242 Upper work roll (equivalent to the front side work roll)
243 Lower frame (equivalent to back side work roll support member)
244 Lower work roll (equivalent to back side work roll)
400 Automatic release mechanism 410 Servo motor 420 Ball screw part 421 Output member 430 Eccentric cam part 431 Arm member 433 Shaft 434 Eccentric cam 440 Hydraulic cylinder 441 Output member 500 Opening mechanism 600 Reduction mechanism 601 Trapezoidal screw part 602 Trapezoidal screw part 603 Upper taper block 603A taper surface 604 upper taper block 604A taper surface 605 lower taper block 605A taper surface 606 lower taper block 606A taper surface 611 shaft

Claims (6)

At least one surface-side work roll that contacts the surface of the work, and at least one back-side work that has a rotation center axis that is in contact with the back surface of the work and is offset from the rotation center axis of the surface-side work roll in the workpiece transport direction A release mechanism used in a straightening processing device for performing a predetermined straightening process on a coiled workpiece by passing between a roll and a roll,
First conversion means for converting the rotational motion of the electric motor in the forward and reverse directions into the reciprocating motion of the output member and outputting the reciprocating motion;
Second conversion means for converting the reciprocating motion of the output member output by the first conversion means into the rotational motion of the release rotating shaft;
A reciprocating member that is reciprocated using an eccentric operation by a rotational movement of an eccentric mechanism disposed on the release rotating shaft;
Including
Using the reciprocating motion of the reciprocating member, a part of the reciprocating member is connected to support the front side work roll, the front side work roll supporting member, and the back side work roll supporting the back side work roll. The workpiece is clamped for execution of the straightening process, and the workpiece is moved from the clamped state by being displaced relative to the support member and changing the distance between the front-side work roll and the back-side work roll. A release mechanism configured to be able to switch between a release state and a release state.   The release mechanism according to claim 1, wherein the electric motor is a servo motor.   The release mechanism according to claim 1 or 2, wherein the first conversion means includes a ball screw mechanism. The reciprocating member comprises a reciprocating actuator;
At least when the correction process is stopped, by extending the output member of the reciprocating actuator, the front-side work roll support member is displaced relative to the back-side work roll support member, and the front-side work roll and the The release mechanism according to any one of claims 1 to 3, further comprising a mouth opening mechanism that opens between the back-side work rolls.   At least one surface-side work roll that contacts the surface of the work, and at least one back-side work that has a rotation center axis that is in contact with the back surface of the work and is offset from the rotation center axis of the surface-side work roll in the workpiece transport direction A straightening processing apparatus for executing a predetermined straightening process on a workpiece by passing between the rolls and including the release mechanism according to any one of claims 1 to 4. An orthodontic treatment apparatus characterized by being configured. A lower taper block on which the surface-side work roll is supported and having a tapered surface on the upper surface;
An upper taper block having a taper surface facing the taper surface of the lower taper block on its lower surface;
A shaft-like screwing member screwed into the upper taper block;
Comprising
By rotating the screwing member by an electric motor and reciprocating the upper taper block along the screwing member, a taper surface on the lower surface of the upper taper block and the lower taper block facing the taper surface 5. The roll-down mechanism according to claim 4, further comprising: a roll-down mechanism configured to adjust a roll-down amount of the upper work roll with respect to the work by adjusting a relative position of the upper surface of the upper work roll. Correction processing equipment.