JP2009113093A - U press machine, and method for adjusting position of locker die in u press machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily adjust the position of a locker die in a U press machine U-shaping a steel sheet. <P>SOLUTION: The side confronted with a punch 21 with a bracket 23 sandwiched in the width direction of a steel sheet 2 includes a first movable body 26 movable along the length direction of the steel sheet 2. Further, the space between the bracket 23 and the first movable body 26 includes a second movable body 27 movable along the width direction of the steel sheet 2. The first movable body 26 includes a first movable body contact face being in contact with the second movable body 7, so as to be tilted with respect to the width direction and length direction of the steel sheet 2. The second movable body 27 includes a second movable body contact face being in contact with the first movable body contact face toward a direction along the first movable body contact face. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a U press machine used in a steel pipe manufacturing facility and a rocker die position adjusting method for the U press machine.

  A UO manufacturing method is known as a typical method for manufacturing a steel pipe. In this method, first, C forming (end bending) is performed to bend and deform both edges of a flat steel plate that is a material to be formed, and then the center portion of the material to be formed is bent and deformed so that the material to be formed is substantially U-shaped. U-shaped to form a letter, and further O-shaped to deform the material to be molded from a substantially U-shape to a substantially O-shape (substantially circular), then a butted portion (part where both edges are close to each other) ) Are welded to produce a circular welded steel pipe (UO steel pipe).

  U molding of the material to be molded is a punch that contacts the center of the upper surface of the material to be molded, a rocker die that is provided on both sides (outside) of the punch and that contacts the lower surface of the material to be molded, a bracket that holds the rocker die, and a bracket This is performed using a U-press machine equipped with a bed or the like (see Patent Document 1). In addition, the bracket is configured to be movable with respect to the bed, and a spacer (block) is inserted into the gap between the bracket and the step portion provided at the edge of the bed, and the number of spacers to be inserted into the gap ( It is known that the position of the bracket relative to the bed, that is, the position of the rocker die relative to the punch can be adjusted by increasing or decreasing the number of insertion spacers (see Patent Document 2).

JP 59-107725 A JP 59-113931 A

  However, in the conventional U press, it takes time to insert a spacer between the bracket and the bed (insertion operation) and to remove the spacer from the bracket and the bed (extraction operation). There was a problem with poor workability. Therefore, it takes a long time (for example, about 1.5 hours) to adjust the number of insertion spacers, that is, to adjust the position of the rocker die. Also, the position of the rocker die could not be finely adjusted.

  The present invention has been made in view of the above points, and an object thereof is to provide a U press machine and a rocker die position adjusting method for a U press machine that can easily adjust the position of the rocker die.

  In order to solve the above-described problems, according to the present invention, a U-press machine for U-forming a steel plate, a punch that contacts the upper surface of the steel plate, a rocker die that contacts the lower surface of the steel plate, and supports the rocker die A bracket, and the bracket is movable in the width direction of the steel plate, on the side facing the punch across the bracket in the width direction of the steel plate, in the length direction of the steel plate A first movable body movable along the first movable body, and a second movable body movable along the width direction of the steel plate between the bracket and the first movable body. The movable body is provided with a first movable body contact surface that contacts the second movable body so as to be inclined with respect to the width direction and the length direction of the steel plate. Is in contact with the first movable body contact surface Movable contact surface, characterized in that provided in a direction along said first movable contact surface, U press is provided.

  The U press machine may include a plurality of spacers that can be inserted between the bracket and the second movable body. A bed that holds the bracket; and an inner surface of the bed that is erected upward from a surface on which the bracket is placed at an edge of the bed. It is good also as a structure which moves along a bed inner surface. Furthermore, a second movable body urging mechanism that urges the second movable body in a direction in which the second movable body is pressed against the first movable body may be provided.

  A plurality of the first movable bodies, and a first movable body moving mechanism that moves two adjacent first movable bodies in the longitudinal direction of the steel plate while synchronizing them in opposite directions. May be. Further, the first movable body contact surfaces respectively provided on the two adjacent first movable bodies are inclined in opposite directions, and the second movable body includes the first movable body contact surface. Two movable body contact surfaces are provided, and the two second movable body contact surfaces are respectively provided with respect to the first movable body contact surfaces provided on the two adjacent first movable bodies. You may make it contact.

  In addition, a plurality of the first movable bodies may be provided, and a first movable body moving mechanism that moves two or more first movable bodies adjacent in the length direction of the steel plate in the same direction may be provided. . Furthermore, the first movable body contact surfaces respectively provided on two or more first movable bodies adjacent in the length direction of the steel plate are provided to be inclined in the same direction, and the second The movable body includes two or more second movable body contact surfaces, and the two or more second movable body contact surfaces are provided on two or more first movable bodies adjacent in the length direction of the steel plate, respectively. You may make it contact with respect to the respectively 1st movable body contact surface.

  Furthermore, according to the present invention, a U press machine for U-forming a steel plate, comprising a punch that contacts the upper surface of the steel plate, a rocker die that contacts the lower surface of the steel plate, and a bracket that supports the rocker die, The bracket is movable along the width direction of the steel plate, and is movable in a predetermined direction on the side facing the punch across the bracket in the width direction of the steel plate. A U press is provided, wherein the predetermined direction is a direction inclined with respect to a width direction of the steel plate and a direction inclined with respect to a length direction of the steel plate. .

  In this U-press machine, a third movable body guide surface provided along the predetermined direction may be provided on the side facing the punch across the bracket in the width direction of the steel plate. good. The third movable body may be moved along the third movable body guide surface. Further, a plurality of spacers that can be inserted between the bracket and the third movable body may be provided.

  Moreover, according to the present invention, in a U press machine for U-forming a steel plate using a punch and a rocker die, the method of adjusting the position of the rocker die in the width direction of the steel plate, the method in the width direction of the steel plate On the side facing the punch across the bracket supporting the rocker die, the first movable body is moved along the length direction of the steel plate, and with the movement of the first movable body, Two movable bodies are moved along the width direction of the steel sheet, and the second movable body holds the bracket from the side facing the punch in the width direction of the steel sheet, A method for adjusting a rocker die position of a U-press machine is provided.

  In this rocker die position adjusting method, the bracket may be held with a plurality of spacers inserted between the second movable body and the bracket.

  The first movable body contact surface provided on the first movable body is inclined with respect to the width direction and the length direction of the steel plate, and the first movable body is made to be the length of the steel plate. You may move along a direction. Further, the second movable body contact surface provided on the second movable body is brought into contact with the first movable body contact surface while the second movable body is moved in the width direction of the steel plate. You may move along.

  Furthermore, according to the present invention, in the U press machine for U-forming a steel plate using a punch and a rocker die, the method of adjusting the position of the rocker die in the width direction of the steel plate, On the side facing the punch across the bracket that supports the rocker die, the second direction is inclined with respect to the width direction of the steel plate and along a predetermined direction inclined with respect to the length direction of the steel plate. The movable body is moved, and the third movable body holds the bracket from the side facing the punch in the width direction of the steel plate, and adjusts the position of the rocker die of the U press machine. A method is provided.

  In this rocker die position adjusting method, the bracket may be held with a plurality of spacers inserted between the third movable body and the bracket.

  According to the present invention, by moving the first movable body in the length direction of the steel plate, the second movable body is moved along with the movement of the first movable body (first movable body contact surface). It can be moved in the width direction. By moving the second movable body, the position of the blanket, that is, the position of the rocker die can be easily adjusted, and fine adjustment is also possible. Moreover, the position of the blanket, that is, the position of the rocker die can be easily adjusted by moving the third movable body in a predetermined direction.

  Hereinafter, an embodiment (first embodiment) according to the present invention will be described. In the present specification and drawings, elements having substantially the same functional configuration are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 shows a schematic view of a steel pipe manufacturing facility 3 that manufactures a steel pipe by sequentially forming a workpiece 2 that is a substantially rectangular flat steel plate by C-forming, U-forming, and O-forming. As shown in FIG. 1, the steel pipe manufacturing facility 3 includes a C molding machine 11 that performs C molding (end bending, C press) of the molding material 2, and U molding (U press) of the C molded molding material 2. U-press machine 12 (U-molding machine) to perform, O-press machine 13 (O-molding machine) to perform O-molding (O-press) of U-molded material 2, end portions of O-molded material 2 A welding machine 15 for welding the pipe, a pipe expansion machine 16 for expanding the workpiece 2 to a predetermined size (inner diameter, outer diameter), and the like. In other words, the U-press machine 12 is loaded with the molding material 2 that has been subjected to C-molding.

  FIG. 2 shows the configuration of the U press 12. In the following, for convenience of explanation, the direction in which the length direction (plate length direction) of the molding material 2 is directed during U pressing is defined as the X direction, and the horizontal direction orthogonal to the X direction, that is, U The direction in which the width direction (plate width direction) of the material to be molded 2 is directed during pressing is the Y direction, and the vertical direction (vertical direction) perpendicular to the X direction and Y direction, that is, during the U press, The direction in which the thickness direction (plate thickness direction) of the molding material 2 is directed is defined as the Z direction. Moreover, the conveyance direction of the to-be-molded material 2 is a direction along the X direction, and the side to which the to-be-molded material 2 which has not yet been U-molded is loaded (upstream side in the conveyance direction, back side in FIG. 2). Is defined as the rear side, and the side (the downstream side in the conveying direction, the front side in FIG. 2) from which the material 2 to be molded after U molding is carried out is defined as the front side.

  As shown in FIG. 2, the U press machine 12 includes a punch 21 (U punch) that abuts on the center of the upper surface of the material 2 (the center in the Y direction (the width direction of the material 2)), Two rocker dies 22 are provided which are in contact with the outside of the lower surface center portion (the center portion in the Y direction) of the material 2. Further, two brackets 23 that rotatably support each rocker die 22 and a bed 24 (base) that holds the brackets 23 are provided. Further, the U press 12 includes a plurality of rocker die position adjustment systems 25 that adjust the position of the rocker die 22 (the position of the bracket 23). Each rocker die position adjusting system 25 includes two brackets 23, between each bracket 23 and the bed 24 (that is, the outer side of the bracket 23 in the Y direction and the side facing the punch 21 with the bracket 23 sandwiched in the Y direction). ), A slide wedge 26 as a first movable body movable along the X direction, and a movable body 27 as a second movable body movable between the slide wedges 26 and the bracket 23 along the Y direction. Furthermore, a spacer insertion device 31 for inserting a spacer 30 (block) into a gap formed between each bracket 23 and the movable body 27 is provided.

  The punch 21 is provided so as to be movable up and down in the Z direction with respect to the molding material 2. The rocker die 22 and the bracket 23 are respectively provided at positions facing each other across the punch 21 (on the left and right sides of the punch 21 in the Y direction). Each rocker die 22 is attached to the bracket 23 via a support shaft 22a (fulcrum). In other words, in this configuration, the punch 21 is covered while the lower surface (outer surface) of the molding material 2 inserted between the punch 21 and the rocker die 22 in a posture along the XY plane is held by the rocker die 22. The central portion of the molding material 2 is bent and deformed by being lowered from above the molding material 2 and applying a vertical load to the central portion of the molding material 2. In addition, each rocker die 22 is rotated around the support shaft 22 a as the punch 21 and the molding material 2 are lowered, so that the portions on both sides of the molding material 2 are rotated along with the rotation of each rocker die 22. Then, it is pushed inward and deformed in the direction along the XZ plane, whereby the material to be molded 2 is press-molded into a substantially U shape when viewed from the X direction.

  Although not shown, a plurality of rocker dies 22 and brackets 23 are arranged side by side in the X direction on both sides of the punch 21. A plurality of slide wedges 26 are arranged side by side in the X direction so as to correspond to each bracket 23, and the movable body 27 is attached to two brackets 23 (two slide wedges 26) as will be described later. It is provided to correspond to each one. A plurality of spacer insertion devices 31 are arranged side by side in the X direction so as to correspond to each bracket 23 one by one. Incidentally, for example, 20 brackets 23 are installed on each side of the bed 24, that is, about 40 in total in the U press machine 12 as a whole.

  Step portions 35 are provided on the left and right sides of the bed 24 as viewed from the X direction. That is, the bed 24 extends along the XZ plane, the bed bottom surface 36 on which the bracket 23, the slide wedge 26, the movable body 27, and the like are placed, the bed top surface 37 provided at a position higher than the bed bottom surface 36, and the XZ plane. And a bed inner surface 38 formed. The bed upper surface 37 is provided substantially horizontally on both sides of the bed bottom surface 36 in the Y direction. The bed inner side surface 38 is erected upward from the bed bottom surface 36 between the outer edge portion of the bed bottom surface 36 and the inner edge portion of each bed upper surface 37. And the step part 35 is formed in the Y direction substantially symmetrically by the edge part of the bed bottom face 36, the bed upper surface 37, and the bed inner side face 38.

  The bracket 23 is placed inside the movable body 27 so as to be slidable in the Y direction with respect to the bed bottom surface 36. That is, the outer surface of the bracket 23 can be moved toward and away from the movable body 27 in the Y direction. A spacer 30 (block) can be inserted into the gap between the outer surface of the bracket 23 and the side surface 27 a of the movable body 27. That is, the outer surface of the bracket 23 is held from the outside in the Y direction by the movable body 27 through the spacer 30, and the Y side surface 38 through the spacer 30, the movable body 27, and the slide wedge 26 It is held from the outside in the direction.

  FIG. 3 is a schematic plan view of the rocker die position adjustment system 25 (a state where all the spacers 30 provided in the spacer insertion device 31 are inserted between the bracket 23 and the movable body 27). As shown in FIG. 3, the rocker die position adjustment system 25 includes two brackets 23, two (a pair of) slide wedges 26, one movable body 27, 2 provided side by side with a predetermined interval in the X direction. A stand spacer insertion device 31 is provided. Further, the rocker die position adjusting system 25 includes a wedge moving mechanism 40 (first movable body moving mechanism) that moves the slide wedge 26 in synchronization with each other in opposite directions, and the movable body 27 with respect to the slide wedge 26. A gas spring mechanism 41 is provided as a second movable body biasing mechanism that biases in the pressing direction.

  The rocker die position adjustment system 25 includes a continuous adjustment portion that can continuously adjust the position of the rocker die 22 and a step adjustment portion that can adjust the position of the rocker die 22 stepwise. It has become. The continuous adjustment portion includes a slide wedge 26, a movable body 27, a wedge moving mechanism 40, and a gas spring mechanism 41, and the movable body 27 is moved in the Y direction with respect to the bed 24 by an arbitrary amount of movement within a predetermined slide range. The position of the bracket 23 with respect to the bed 24 can be adjusted steplessly (continuously) by moving it steplessly. The step adjustment portion is configured by a spacer insertion device 31, and by selecting the number of spacers 30 to be inserted between the bracket 23 and the movable body 27 (the number of insertion spacers), the position of the bracket 23 with respect to the bed 24 is determined. It can be adjusted stepwise and selectively according to the number of spacers 30. Further, in the present embodiment, the continuous adjustment portion has a fine adjustment function capable of finely adjusting the position of the rocker die 22, and the step adjustment portion significantly changes the position of the rocker die 22. It has a possible coarse adjustment function.

  One slide wedge 26 is provided outside each bracket 23 so as to be sandwiched between the bed inner surface 38 and the movable body 27, and is guided by the bed inner surface 38 at the edge of the bed bottom surface 36. However, it moves along the bed inner surface 38. Further, two (a pair of) slide wedges 26 adjacent in the X direction are moved in synchronization in opposite directions by the operation of the wedge moving mechanism 40.

  Each slide wedge 26 has a wedge so that the width in the Y direction gradually decreases from the proximal end side (the wedge moving mechanism 40 side) of the slide wedge 26 toward the distal end side (the side away from the wedge moving mechanism 40). It is formed in a (wedge) shape. That is, the slide wedge 26 positioned on the front side (left side in FIG. 3) of the wedge moving mechanism 40 in the X direction is formed so as to become thinner gradually from the rear side toward the front side. The slide wedge 26 located on the rear side (right side in FIG. 3) of the wedge moving mechanism 40 in the X direction is formed so as to become thinner gradually from the front side toward the rear side.

  The outer surface 26a of each slide wedge 26 (the surface that abuts along the bed inner surface 38) has a planar shape formed along the XZ plane. On the other hand, the inner side surface 26b of the slide wedge 26 (the first movable body contact surface that comes into contact with the movable body 27 (outer side surface 27c described later)) gradually increases as it goes from the proximal end side to the distal end side of the slide wedge 26. It is in the shape of a plane provided so as to be inclined with respect to the X direction and the Y direction (with respect to the XZ plane). The inner side surface 26b of the slide wedge 26 positioned on the front side of the wedge moving mechanism 40 is provided so as to gradually go outward as it goes from the rear side to the front side, and the inner side surface of the slide wedge 26 positioned on the rear side of the wedge moving mechanism 40. 26b is provided so as to gradually go outward as it goes from the front side to the rear side. That is, the inner side surfaces 26b respectively provided in the two slide wedges 26 adjacent to each other with the wedge moving mechanism 40 (provided on both sides of the wedge moving mechanism 40 in a plan view) are inclined in opposite directions. Yes.

  In the illustrated example, the two slide wedges 26 adjacent to each other with the wedge moving mechanism 40 interposed therebetween are symmetrical with respect to the YZ plane (that is, with the wedge moving mechanism 40 positioned therebetween) It is arranged. Accordingly, the inner side surfaces 26b provided on the two slide wedges 26 adjacent to each other with the wedge moving mechanism 40 interposed therebetween are inclined in directions symmetric with respect to the YZ plane.

  Further, the height (dimension in the Z direction) of each slide wedge 26 is substantially the same as the height of the bed inner side surface 38 (step between the bed bottom surface 36 and the bed top surface 37) as shown in FIG. It is height. In other words, the upper surface of each slide wedge 26 is arranged at the same height as the bed upper surface 37 along the XY plane.

  As shown in FIG. 3, the wedge moving mechanism 40 is provided at a position sandwiched between two slide wedges 26 in a plan view. Further, the wedge moving mechanism 40 has a geared motor 42 as a drive unit that generates power for moving the two slide wedges 26 provided on both sides, and the power generated by the geared motor 42 is supplied to each slide wedge 26. Two power transmission parts 43 to be transmitted are provided.

  The geared motor 42 has a motor part 42a (electric motor) and a speed reducer 42b. The housings of the motor unit 42a and the speed reducer 42b are fixed to the bed bottom surface 36. The speed reducer 42b includes two output shafts 42c provided on opposite sides. The rotation center axes of the output shafts 42c are oriented in the same direction (X direction), but one output shaft 42c is disposed on the front side of the speed reducer 42b, and the other output shaft 42c is the speed reducer 42b. It is arranged on the back side.

  As the power transmission unit 43, for example, a screw transmission device having a transmission screw 43a and a nut 43b as shown in FIG. 3 may be used. In the example shown in the figure, the transmission screw 43a is attached to the tip of each output shaft 42c with the length direction in the X direction above the slide wedge 26, and is integrated with the output shaft 42c. The output shaft 42c is rotatable around the rotation center axis. The nut 43b is engaged with the transmission screw 43a, and is fixed to the base end portion (the end portion on the wide side in the Y direction) of the slide wedge 26. That is, when the transmission screw 43a rotates, the nut 43b moves straight in the X direction along the transmission screw 43a, and the slide wedge 26 slides integrally with the nut 43b.

  Note that the two power transmission portions 43 provided on both sides of the geared motor 42 have a symmetrical structure with respect to the YZ plane. In other words, the transmission screws 43a on both sides of the geared motor 42 are formed with screw grooves having the same pitch, but the winding directions of the screw grooves are opposite to each other. In the example shown in the drawing, the front transmission screw 43a is provided with a left-hand thread groove, and the rear transmission screw 43a is provided with a right-hand screw groove. The geared motor 42 can rotate the output shaft 42c and the transmission screw 43a on both sides of the geared motor 42 in the same direction by the same amount of rotation. Thereby, the two nuts 43b on both sides can be moved to the opposite side by the same movement amount. That is, when the transmission screws 43a on both sides are rotated leftward (counterclockwise) when viewed from the front, the two nuts 43b (slide wedges 26) on both sides can be moved away from the geared motor 42, respectively. When the transmission screws 43a on both sides are rotated rightward (clockwise) when viewed from the front, the two nuts 43b (slide wedges 26) on both sides can be moved in directions to approach the geared motor 42, respectively.

  The movable body 27 includes two movable wedge portions 27a and two movable wedges that respectively contact the slide wedge 26 provided on the front side of the wedge moving mechanism 40 and the slide wedge 26 provided on the rear side of the wedge moving mechanism 40. And a movable body base 27b that holds the portion 27a.

  The movable wedge portion 27a is provided on both sides of the movable body base portion 27b in the X direction, and slides integrally with the movable body base portion 27b. Further, the width in the Y direction is formed so as to gradually increase from the base end side (movable body base 27b side) to the distal end side (side away from the movable body base 27b). That is, the movable wedge portion 27a provided on the front side of the movable body base portion 27b is formed so as to gradually increase from the rear side toward the front side. The movable wedge portion 27a provided on the rear side of the movable body base portion 27b is formed so as to gradually become thicker from the front side toward the rear side.

  Each movable wedge portion 27 a includes an outer surface 27 c as a second movable body contact surface that contacts the inner surface 26 b of the slide wedge 26, and an inner surface 27 d that functions as a movable holding surface that holds the bracket 23 or the spacer 30. Are provided. That is, the movable body 27 is provided with two outer side surfaces 27c and two inner side surfaces 27d.

  Each outer surface 27c has a planar shape provided to be inclined with respect to the X direction and the Y direction (relative to the XZ plane) so as to gradually go outward as it goes from the base end side to the tip end side. It has become. The outer surface 27c of the movable wedge portion 27a located on the front side of the movable body base portion 27b is provided so as to gradually go outward as it goes from the rear side to the front side. The outer surface 27c of the movable wedge portion 27a located on the rear side of the movable body base portion 27b is provided so as to gradually go outward as it goes from the front side to the rear side. That is, the two outer surfaces 27c provided on the movable body 27 are inclined in directions opposite to each other. Further, each outer surface 27c is inclined in a direction along the inner side surface 26b to be brought into contact (parallel to the inner side surface 26b), and further, can be contacted in a state along each inner side surface 26b. , And can be moved while being in contact with each inner side surface 26b.

  On the other hand, the inner side surface 27d of the movable wedge portion 27a has a planar shape formed along the XZ plane, and the spacer 30 lowered to the bed bottom surface 36 abuts along the inner side surface 27d. It is supposed to be made. Further, in the illustrated example, the height (dimension in the Z direction) of the movable wedge portion 27a is substantially the same as the bed inner side surface 38, like the slide wedge 26, and the upper surface of the movable wedge portion 27a is also the same. The bed upper surface 37 is arranged at the same height along the XY plane.

  The movable body base 27b is provided inside the wedge moving mechanism 40 in the Y direction. A guide rail 45 (second movable body guide rail) for guiding the movable body base 27b is provided above the movable body base 27b. The guide rails 45 are disposed along the Y direction above the movable body base 27b, and two guide rails 45 are arranged in parallel in the X direction so as to be parallel to each other. It is fixed against. The holding base 46 is fixed to the bed bottom surface 36 on the inner side of the movable body base 27b. In addition, two guide grooves 27e that are movable along the respective guide rails 45 are provided on the upper surface of the movable body base 27b. That is, the movable body 27 can slide only in the Y direction between the holding base 46 and the slide wedge 26 while moving the guide grooves 27e along the guide rails 45, respectively. The movement of the movable body 27 in other directions (such as the X direction and the Z direction) other than is regulated by the guide rail 45.

  The movable body 27 is urged in a direction (a direction from the inside toward the outside) against the slide wedge 26 by a gas spring mechanism 41 as a second movable body urging mechanism. In the illustrated example, two gas spring mechanisms 41 are provided side by side in the X direction between the holding base 46 and the movable body base 27b. Further, the gas spring mechanism 41 is provided with the central axis (direction in which the urging force is applied) directed in the Y direction. One end of each gas spring mechanism 41 is attached to the inner surface of the movable body base 27 b, and the other end (main body side) of the gas spring mechanism 41 is attached to the holding base 46.

  As described above, the movable body 27 is in a stable state by being configured to abut the movable body 27 on the two slide wedges 26 (two inner side surfaces 26b inclined in opposite directions) on both sides. Therefore, it can be kept in good balance. That is, when the movable body 27 is pressed against the slide wedge 26 by the gas spring mechanism 41 while the slide wedge 26 is fixed, the movable body 27 is inclined with respect to the inner side surface 26b (the tip side of the slide wedge 26). The drag force that pushes the movable body 27 acts on the movable body 27. However, when the two slide wedges 26 are pressed simultaneously as described above, the drag forces that push the movable body 27 are opposite to each other. Work in directions and cancel each other. Therefore, it is possible to suitably prevent the movable body 27 from being displaced from the slide wedge 26. That is, it is possible to prevent the two inner side surfaces 27d from being inclined with respect to the XZ plane, and as a result, are held by the respective inner side surfaces 27d (indirectly or directly with the spacer 30 interposed therebetween). ) The positions of the brackets 23 in the Y direction can be aligned with each other between the two brackets 23, and the position of the rocker die 22 attached to each bracket 23 can be prevented from shifting.

  Further, by moving the two slide wedges 26 in synchronization, the movable body 27 can be smoothly moved in the Y direction while being held in a stable state by the two slide wedges 26. That is, the two inner side surfaces 27d can be slid while maintaining the posture along the XZ plane, and the positions of the two brackets 23 can be reliably aligned.

4, 5, and 6 are a side view of the spacer insertion device 31 (a side view in a state where six spacers 30 are inserted between the bracket 23 and the movable body 27), a plan view, and a front view. Each is shown. As shown in FIGS. 4, 5, and 6, the spacer insertion device 31 includes a plurality of (for example, about 30) spacers 30 and a plurality of spacers 30 arranged in a row in the Y direction, The spacer 30 can be supported at the position raised from the bed 24 (spacer raised position P _BH ), and the spacer 30 is lifted and lowered in the Z direction with respect to the spacer support 51. And an elevating body 52 to be moved. Further, an engagement tool 53 for selectively engaging the spacer 30 with the lifting body 52 is provided.

  The spacer 30 has an inverted T-shaped flat plate shape along the XZ plane. That is, a horizontal plate portion 61 that is elongated along the X direction and a vertical plate portion 62 that protrudes upward from the central portion of the horizontal plate portion 61 are provided. Further, the vertical plate portion 62 is formed with a protrusion 63 (engagement portion) that abuts the engagement tool 53, a through hole 65 through which an elevating bar 96 described later passes, and a holding groove 66 held by a steel ball 91 described later. Has been. The spacer 30 is formed of, for example, a steel plate.

  The horizontal plate portion 61 is provided below the spacer support 51 and is lowered to the bed bottom surface 36 or above the bed upper surface 37 (the upper surface of the movable wedge portion 27a and the upper surface of the slide wedge 26). It is arranged. The vertical plate portion 62 is provided so as to vertically penetrate the inside of the spacer support 51. That is, the horizontal plate portion 61 functions as an inserted portion that can be inserted in a position aligned in the Y direction with respect to the bracket 23 or the bed inner side surface 38, and the vertical plate portion 62 is a held portion that is held by the spacer support 51, It functions as a support part that supports the horizontal plate part 61. In the illustrated example, the height of the horizontal plate portion 61 (dimension in the Z direction) is slightly larger than the height of the movable wedge portion 27a.

  The protrusion 63 protrudes from the side edge portion of the vertical plate portion 62 in the X direction, and is provided above the spacer support 51. The through hole 65 is elongated in the Z direction at the top of the vertical plate portion 62. The holding groove 66 is provided at the side edge portion of the vertical plate portion 62 below the protrusion 63 and is arranged inside the spacer support 51.

  The spacer support 51 is supported by a support moving mechanism 71. Further, by driving the support moving mechanism 71, it is possible to move horizontally in the Y direction above the stepped portion 35. The support moving mechanism 71 is fixed with respect to the bed 24.

  In the illustrated example, the spacer support 51 is formed in a substantially rectangular frame shape when viewed from above, and the inner space serves as a spacer holding space 80 for holding the vertical plate portion 62 of the spacer 30. Yes. A guide rail 81 (elevating body guide rail) for guiding the elevating body 52 in the Z direction is provided on the outer surface of the spacer support body 51, and a downward urging force that applies an urging force for lowering the elevating body 52 relative to the spacer support body 51. A gas spring 82 as a mechanism and a hydraulic cylinder mechanism 83 as an ascending drive mechanism that provides power for raising the elevating body 52 to the spacer support 51 are attached.

On the inner surface of the spacer support 51, a steel ball 91 as a spacer holding member for holding the spacer 30 at a position (spacer raised position P _BH ) raised with respect to the spacer support 51 and the bed upper surface 37, and a steel ball 91 are provided. A recess 92 for holding is provided. A plurality of steel balls 91 are provided side by side in the Y direction so as to correspond to each spacer 30.

Each steel ball 91 is slidably held along the X direction inside the recess 92. Although not shown, a coil spring as a holding member urging member that urges the steel ball 91 to protrude toward the spacer holding space 80 (spacer 30) is compressed in each recess 92. Each is provided in the state. In such a configuration, when the spacer 30 is moved to the spacer ascending position P _BH , the holding groove 66 rises to a position facing the steel ball 91, and the steel ball 91 is recessed by the elastic force of the coil spring (not shown). Protrude from. That is, when the upper edge of the holding groove 66 is caught by the steel ball 91, the spacer 30 is held so as not to fall from the spacer ascending position _PBH . On the other hand, in a state where the spacer 30 is moved to the spacer lowered position P _BL, retaining groove 66 moves downward the steel ball 91, the steel ball 91 is pressed by the side edges of the vertical plate portion 62, not a coil spring (shown ) To be pushed into the recess 92 against the elastic force. That is, the elevating body 52 moves the steel ball 91 against the urging force of a coil spring (not shown) to lower the spacer 30 with respect to the spacer support body 51.

  The guide rails 81 are respectively attached to both side surfaces of the spacer support body 51 in the Y direction, and the elevating body 52 is held by these guide rails 81. That is, the elevating body 52 is attached to the spacer support body 51 via the guide rail 81. Then, the elevating body 52 descends along the guide rail 81 with respect to the spacer support 51, so that one or more spacers among the plurality of spacers 30 supported by the spacer support 51 are replaced with the spacer support 51. Are lowered at once. In addition, when the elevating body 52 is raised along the guide rail 81 with respect to the spacer support body 51, one or more spacers 30 among the plurality of spacers 30 supported by the spacer support body 51 are moved to the spacer support body. It is the structure which raises to 51 collectively. In this way, by adopting a configuration in which an arbitrary number of spacers 30 are moved up and down collectively with respect to the spacer support 51, the spacer 30 can be inserted and removed efficiently, and the number of inserted spacers can be easily and quickly. Can be changed to

A front end portion (lower end portion) of the gas spring 82 is attached to the lower portion of the elevating body 52. On the other hand, the tip of the hydraulic cylinder mechanism 83 (the upper end of the piston 82a) is attached to the upper part of the elevating body 52. That is, the elevating body 52 is urged toward the lower side (the elevating body lowering position P _KL ) with respect to the spacer support body 51 by the action of the gas spring 82. Further, when the hydraulic cylinder mechanism 83 is operated, the lifting body 52 can be lifted with respect to the spacer support body 51 against the urging force of the gas spring 82 and moved to the lifting body lifting position P _KH. It has become.

  Further, on the upper part of the elevating body 52, an elevating bar 96 that penetrates the through hole 65 provided in each spacer 30 in the Y direction and an engaging tool holding groove 97 for holding the engaging tool 53 are provided. ing.

  The raising / lowering bar 96 is provided above the center part of the spacer support body 51 (spacer holding space 80), and is held in a state where the length direction is in the Y direction. On the other hand, the through holes 65 of the spacer 30 are arranged in a line in the Y direction, and the elevating bar 96 is passed through these through holes 65. The spacer 30 can be raised with respect to the spacer support 51 by lifting the through-hole 65 with the elevating bar 96.

  The engagement tool holding groove 97 is opened on the inner side surface of the elevating body 52 above the spacer support body 51. That is, it is formed on the side of the spacer 30 (projection 63) held by the spacer support 51. Moreover, it is provided along the Y direction.

When the lift 52 is in the elevating body raised position P _KH, the bottom surface of the engaging member retaining groove 97 is disposed at the same height as the upper surface of the projection 63 provided in the spacer 30 in the spacer raised position P _BH It is like that. That is, when the elevating body 52 is at the elevating body ascending position P _KH and the spacer 30 is at the spacer ascending position P _BH , the engaging tool 53 (described later) is formed on the bottom surface of the engaging tool holding groove 97 and the upper surface of the protrusion 63. The engagement tool main body 101) is bridged, and the spacer 30 can be engaged with the lift 52. In addition, the spacer 30 can be lowered together with the elevating body 52 in a state where the engaging tool 53 is bridged between the bottom surface of the engaging tool holding groove 97 and the upper surface of the protrusion 63.

  The engaging tool 53 includes an engaging tool main body 101 that is engaged with the protrusion 63 of the spacer 30. An engagement tool operating rod 102 is attached to the engagement tool main body 101. Further, the engaging tool 53 is movable in the Y direction with respect to the lifting body 52 and the spacer 30 in the engaging tool holding groove 97.

  The engagement tool main body 101 is formed in, for example, an elongated straight bar shape having a certain width, and can be inserted into the engagement tool holding groove 97 in a state where the length direction is in the Y direction. When inserted into the engagement tool holding groove 97, one edge portion of the engagement tool main body 101 protrudes from the engagement tool holding groove 97 and engages (contacts) the spacer 30 (the upper surface of the protrusion 63). ). That is, the spacer 30 is engaged with the upper part of the elevating body 52 via the engagement tool main body 101.

  The engaging tool operating rod 102 is attached to the proximal end portion of the engaging tool main body 101 and is formed in a straight bar shape along the length direction of the engaging tool main body 101. When the operator manually pushes or pulls the engagement tool operating rod 102, the position of the engagement tool main body 101 in the Y direction with respect to the engagement tool holding groove 97, that is, the lift tool 52 is engaged. The number of spacers 30 can be adjusted. The engaging tool operating rod 102 is movable along the engaging tool holding groove 97, but is formed thinner than the engaging tool main body 101 and protrudes from the engaging tool holding groove 97. It is supposed not to. That is, it is arranged at a position where it does not engage (contact) with the protrusion 63.

Next, a procedure for adjusting the position of the rocker die 22 in the U press 12 configured as described above will be described. FIG. 7 shows a state before the spacer 30 is inserted, that is, the spacers 30 supported by the spacer support 51 are all held at the spacer raised position P _BH and the outside of the bed bottom surface 36 ( A state is shown in which the movable wedge portion 27a, the slide wedge 26, and the bed upper surface 37 are disposed). In this state, the elevating body 52 is lowered with respect to the spacer support body 51 by the urging force of the gas spring 82, and is disposed at the elevating body lowering position _PKL .

  On the other hand, the slide wedge 26 is held so as not to move with respect to the bed 24 when the geared motor 42 is stopped (the rotation of the output shaft 42a is stopped). That is, the slide wedge 26 is held by the bed inner surface 38 and the wedge moving mechanism 40 so as to be stationary at a predetermined position. The movable body 27 is pressed from the inside to the inner side surface 26 b of the slide wedge 26 by the urging force of the gas spring mechanism 41, and is held from the outside by the inner side surface 26 b of the slide wedge 26. The outer surface 27c of the movable body 27 and the inner surface 26b of the slide wedge 26 are in close contact with each other, and the outer surface 26a of the slide wedge 26 and the bed inner surface 38 are in close contact with each other.

In such a state, first, the hydraulic cylinder mechanism 83 is operated, and the lifting body 52 is lifted with respect to the spacer support body 51 against the biasing force of the gas spring 82 and is disposed at the lifting body lift position P _KH . . Then, as shown in FIG. 8, the engaging tool 53 is inserted into the engaging tool holding groove 97, and the spacer 30 to be lowered (the spacer 30 inserted between the bracket 23 and the movable body 27), for example, Among the 30 spacers 30, one or two or more adjacent spacers 30 (sixth spacers 30 counted from the inside in the illustrated example) counted from the inside (the punch 21 side and the back side) are provided. The insertion of the engaging tool 53 is stopped in a state where the upper surface of the protrusion 63 is in contact with the lower surface of the engaging tool main body 101 so as to be bridged.

  Next, the support body moving mechanism 71 is operated, and the spacer support body 51 is slid inward along the Y direction. The spacer 30, the lifting / lowering body 52, the engagement tool 53, and the like are moved in the Y direction integrally with the spacer support 51. Then, the horizontal plate portions 61 of the six spacers 30 to be lowered are moved from above the movable body 27 to above the bed bottom surface 36 (inside the movable body 27). Stop moving.

Thereafter, the operation of the hydraulic cylinder mechanism 83 is stopped, and the elevating body 52 is lowered with respect to the spacer support body 51 as shown in FIG. Then, the engaging tool 53 held in the engaging tool holding groove 97 is lowered together with the lifting body 52, and the six spacers 30 in contact with the engaging tool body 101 are integrated with the lifting body 52. Then, the spacer support 51 is lowered. In other words, the lifting member 52 returns to lift lowered position _{P KL,} 6 sheets of the spacer 30 is caused to move downward in bulk from the spacer raised position _{P BH} spacer lowered position _{P BL.} Accordingly, the horizontal plate portions 61 of the six spacers 30 are selectively lowered collectively onto the bed bottom surface 36 (between the outer surface of the bracket 23 and the inner surface 27d of the movable body 27). At this time, the other spacers 30 positioned outside the six spacers 30 are not lowered together with the elevating body 52 because the projections 63 are not in contact with the engaging tool main body 101, and the spacer ascending position The state held in P _BH is maintained.

  As described above, the six spacers 30 are lowered to the bed bottom surface 36 by the spacer insertion device 31 and inserted between the bracket 23 and the movable wedge portion 27a (one inner side surface 27d provided on the movable body 27). It will be in the state. Thereafter, the position of the spacer support 51 is adjusted by the operation of the support moving mechanism 71, the position of the movable body 27 is adjusted, and the bracket 23 is brought close to the six spacers 30. That is, the bracket 23 is brought into contact with the side surface of the lateral plate portion 61 of the spacer 30 located on the innermost side among the six spacers 30 and located on the outermost side among the six spacers 30 lowered. The side surface of the horizontal plate portion 61 of the spacer 30 is brought into contact with the inner side surface 27 d of the movable body 27.

  The position of the movable body 27 can be adjusted by operating the wedge moving mechanism 40 (moving the slide wedge 26). That is, when the output shaft 42a is rotated by driving the geared motor 42, the transmission screw 43a is rotated integrally with the output shaft 42a. Then, with the rotation of the transmission screw 43a, the nut 43b is moved along the length direction (X direction) of the transmission screw 43a. With the movement of the nut 43b, the slide wedge 26 is moved in the X direction.

  For example, when the slide wedges 26 on both sides of the wedge moving mechanism 40 are moved away from the wedge moving mechanism 40, the inner side surface 26b of each slide wedge 26 contacts the outer side surface 27c of each movable wedge portion 27a. However, it slides relatively toward the tip end side of each movable wedge portion 27a, and each outer surface 27c is pushed by the inner surface 26b while contacting along the inner surface 26b. That is, an external force in a direction to move the movable body 27 inward is given by the inner side surface 26b. Thereby, the movable body 27 is moved inward according to the movement of the inner surface 26b against the urging force of the gas spring mechanism 41. That is, the inner side surface 27 d of each movable wedge portion 27 a is moved to an inner position separated from the bed inner side surface 38. In this case, the six spacers 30 lowered to the bed bottom surface 36 are held in contact with the inner side surface 27d of each movable wedge portion 27a at a position close to the inside. Accordingly, the bracket 23 is held at a position that is moved inward by the amount of movement of each movable wedge portion 27a (that is, the amount of movement of the slide wedge 26 and the amount of rotation of the transmission screw 43a).

  For example, when the slide wedges 26 on both sides of the wedge moving mechanism 40 are moved in the direction toward the wedge moving mechanism 40, the movable body 27 is moved outward by the biasing force of the gas spring mechanism 41. That is, the inner side surface 26b of each slide wedge 26 slides relatively toward the base end side of each movable wedge portion 27a while contacting along the outer side surface 27c of each movable wedge portion 27a. While moving along the inner side surface 26b, 27c moves outward according to the movement of the inner side surface 26b. Thereby, the inner side surface 27d of each movable wedge part 27a is moved to the position which approached the bed inner side surface 38 from the inner side. In this case, the six spacers 30 lowered to the bed bottom surface 36 are held in contact with the inner side surface of each movable wedge portion 27a at the position approached to the outside. Accordingly, the bracket 23 is held at a position that is moved outward by the amount of movement of each movable wedge portion 27a (ie, the amount corresponding to the amount of movement of the slide wedge 26, the amount corresponding to the amount of rotation of the transmission screw 43a). The

  The movable body 27 is held in a stable state by the two slide wedges 26, and is moved smoothly in the Y direction by moving the two slide wedges 26 in synchronization with each other. The inner side surface 27d of each movable wedge portion 27a is slid in the posture along the XZ plane, that is, in the posture parallel to the side surface of the spacer 30 and the bracket 23. Therefore, the inner side surface 27d of the movable wedge portion 27a can be reliably brought into contact with the side surface of the spacer 30, and the spacer 30 can be held in a stable state.

  Thus, the outer surface of the bracket 23 and the innermost spacer 30, and the outermost spacer 30 and the inner side surface 27 d of the movable wedge portion 27 a are brought into contact with each other, so 6 spacers 30 can be inserted. That is, the bracket 23 can be held by the spacer 30 (in other words, indirectly held by the movable wedge portion 27a via the spacer 30). The state in which the bracket 23 is arranged at a position separated from the inner surface 27d of the movable wedge portion 27a by the thickness of the six spacers 30 and the inner surface of the bed according to the amount of movement of the movable body 27 in the Y direction. It can be held at a position spaced from 38. Accordingly, the position of the rocker die 22 is set to a desired position corresponding to the thickness of the six spacers 30 and the position of the inner side surface 27d of the movable wedge portion 27a.

Note that the number of insertion spacers can be arbitrarily changed by adjusting the arrangement of the engagement tools 53. That is, by lifting the lifting / lowering body 52 with respect to the spacer support 51 again, the six spacers 30 lowered to the bed bottom surface 36 are lifted by the lifting / lowering bar 96 and returned to the spacer lifting position P _BH collectively. After all the 30 spacers 30 are held at the spacer raised position P _BH , the engagement tool 53 is slid to increase or decrease the number of protrusions 63 with which the engagement tool body 101 abuts. Thereafter, if the elevating body 52 is lowered again, the spacers 30 having a predetermined number of insertion spacers can be selectively lowered integrally with the elevating body 52. Of course, the spacer 30 is not sandwiched, that is, the bracket 23 is not brought into contact with the spacer 30, but is brought into contact with the inner side surface 27d of the movable wedge portion 27a and directly held by the movable wedge portion 27a. It is also possible.

  As described above, according to the present embodiment, by moving the slide wedge 26 in the X direction, the movable body 27 is moved in the Y direction as the slide wedge 26 (first movable body contact surface) moves. Can be moved. By moving the movable body 27, the position of the blanket 23, that is, the position of the rocker die 22 can be easily and appropriately adjusted.

  Further, for example, when the position of the rocker die 22 is changed within a relatively small range (for example, within a range smaller than the thickness of the spacer 30), or when fine adjustment is performed, the insertion operation and the extraction operation of the spacer 30 are not performed. By simply adjusting the position of the movable body 27, the positions of the spacer 30 and the blanket 23 can be slid and the position of the rocker die 22 can be adjusted quickly. Thereby, the time required for the operation | work which adjusts the position of the rocker die 22 can be reduced significantly. A small number of people can work efficiently. On the other hand, for example, when the position of the rocker die 22 is changed relatively significantly, the rough adjustment is performed by inserting and removing the spacer 30 by the spacer inserting device 31 so that the position of the rocker die 22 can be efficiently performed. Can be adjusted. Therefore, the position adjustment of the rocker die 22 can be efficiently performed when both fine adjustment and coarse adjustment are performed.

  In the spacer insertion device 31, an arbitrary number of spacers 30 can be moved up and down collectively, whereby the spacer 30 can be inserted and removed easily and quickly. By operating the engagement tool 53, the number of insertion spacers can be easily changed, and workability is good. Therefore, rough adjustment can be performed in a short time with a small number of people.

  As mentioned above, although preferred embodiment of this invention was described, this invention is not limited to this example. It is obvious for those skilled in the art that various changes or modifications can be conceived within the scope of the technical idea described in the claims. It is understood that it belongs to.

  For example, in the above embodiment, the wedge moving mechanism 40 includes the geared motor 42 and the power transmission unit 43 (screw transmission device). However, the configuration of the wedge moving mechanism 40 is not limited thereto. In addition, the wedge moving mechanism 40 moves the two slide wedges 26, but, of course, the wedge moving mechanism may be provided individually for each slide wedge 26. That is, for example, a geared motor and a power transmission unit may be provided corresponding to each slide wedge 26 one by one.

  Although the gas spring mechanism 41 is used as the second movable body urging mechanism for urging the movable body 27, the second movable body urging mechanism is not limited to this, and for example, the elastic force of the coil spring is used. A configuration to be used may be used.

  In the above embodiment, the slide wedge 26 is fixedly held by the wedge moving mechanism 40, that is, the slide wedge 26 is held so as not to move relative to the bed 24 by stopping the geared motor 42. However, the structure which suppresses the movement of the slide wedge 26 is not limited to this. For example, the frictional force acting between the slide wedge 26 and the bed 24 is improved (that is, the coefficient of friction between the outer surface 26a and the bed inner surface 38 is increased, for example, the lower surface of the slide wedge 26 and the bed bottom surface 36 are It is also possible to suppress the movement of the slide wedge 26 by increasing the friction coefficient between them and increasing the weight of the slide wedge 26. Then, for example, when press molding is performed (when a force is applied to the rocker die 22), the rocker die 22, the bracket 23, the spacer 30, and the movable body 27 are displaced toward the slide wedge 26, that is, the slide wedge. 26 can be prevented from being pushed out from between the outer side surface 27c of the movable body 27 and the bed inner side surface 38 and sliding to the base end side. Therefore, the rocker die 22 can be reliably supported by the rocker die position adjusting system 25, and the molding force and accuracy of the U press can be prevented from being lowered.

  Further, for example, the frictional force acting between the movable body 27 and the bed 24 is improved (that is, the friction coefficient between the lower surface of the movable body 27 and the bed bottom surface 36 is increased, and the weight of the movable body 27 is increased). Etc.), the movement of the movable body 27 can be suppressed, whereby the movement of the slide wedge 26 can also be suppressed. That is, when press molding is performed, the rocker die 22, the bracket 23, the spacer 30, and the movable body 27 can be prevented from being displaced toward the slide wedge 26, and the slide wedge 26 can be prevented from sliding toward the proximal end side.

  Further, for example, the frictional force acting between the slide wedge 26 and the movable body 27 is improved (that is, the friction coefficient between the inner side surface 26b and the outer side surface 27c is increased, and the X− of the inner side surface 26b and the outer side surface 27c is increased. The movement of the slide wedge 26 can also be suppressed by designing the inclination angle with respect to the Z plane to be small. That is, when press molding is performed, the rocker die 22, the bracket 23, the spacer 30, and the movable body 27 can be prevented from being displaced toward the slide wedge 26, and the slide wedge 26 can be prevented from sliding toward the proximal end side.

  Further, as a first movable body stopping mechanism that applies a force to suppress the movement of the slide wedge 26 when press molding is performed, for example, a cylinder mechanism, an urging mechanism, or the like may be provided. For example, when a hydraulic cylinder mechanism having a piston that can expand and contract in the X direction is used as the first movable body stopping mechanism, when the position of the slide wedge 26 is changed, such as when the position of the rocker die 22 is adjusted, When the position of the slide wedge 26 is fixed, such as when the piston of the hydraulic cylinder mechanism is expanded and contracted in the X direction according to the position of the slide wedge 26 and the position of the rocker die 22 is fixed to perform press molding, The operation of the hydraulic cylinder mechanism may be stopped so that the piston does not expand and contract. Then, the slide wedge 26 is supported by the hydraulic cylinder mechanism, and the movement of the slide wedge 26 can be suitably suppressed.

  In the above embodiment, the two slide wedges 26 are provided on both sides of the wedge moving mechanism 40, and the inner side surface 26b of each slide wedge 26 is inclined in a symmetric direction with respect to the YZ plane. However, the inclination angle with respect to the YZ plane is not necessarily symmetric, and may be inclined at different inclination angles. Even in such a case, when adjusting the position of the movable body 27, if the amount of movement of each slide wedge 26 in the X direction is different depending on the inclination angle, the inner side surface 27d of the movable body 27 is made the XZ plane. It is possible to move in the posture along

  Further, for example, as shown in FIG. 10, a configuration in which inner side surfaces 26b of two adjacent slide wedges 26 are inclined in the same direction (outer side surfaces 27c of two movable wedge portions 27a are inclined in the same direction. Configuration).

  The two slide wedges 26 shown in FIG. 10 have the same shape and size. The inner side surface 26b (first movable body contact surface) of each slide wedge 26 is provided so as to gradually go outward as it goes from the rear side to the front side, and is parallel to each other. The two slide wedges 26 are connected to each other via a connecting member 121 and can slide integrally in the X direction. In the illustrated example, the connecting member 121 is provided between two slide wedges 26, and the front end portion of the connecting member 121 is fixed to the rear end portion of the front slide wedge 26, and the rear end of the connecting member 121. The portion is fixed to the front end portion of the rear slide wedge 26. The rear slide wedge 26 is connected to a wedge moving mechanism 122 as a first movable body moving mechanism for moving the two slide wedges 26 in synchronization with each other in the same direction.

  As the wedge moving mechanism 122, a mechanism similar to the wedge moving mechanism 40 described in the embodiment, that is, a mechanism having a geared motor 42 and one power transmission unit 43 as shown in FIG. 10 may be used. . In the illustrated example, the nut 43b of the power transmission unit 43 is fixed to the base end portion (rear end portion) of the slide wedge 26 provided on the rear side. Therefore, by sliding the rear slide wedge 26 in the X direction integrally with the nut 43b, the connecting member 121 and the front slide wedge 26 are slid in the X direction along with the rear slide wedge 26. Can do. That is, the slide wedges 26 can be moved in the same direction by the same amount of movement. Thus, the positions of the two slide wedges 26 can be easily adjusted with a simple configuration.

  In FIG. 10, the movable body 27 includes two movable wedge parts 27a, that is, a movable wedge part 27a provided on the front side of the movable body base part 27b and a movable wedge provided on the rear side of the movable body base part 27b. Each has a portion 27a, and these are all formed so as to gradually become thicker from the rear side toward the front side. The outer surface 27c (second movable body contact surface) of each movable wedge portion 27a is provided so as to gradually go outward as it goes from the rear side to the front side, and is inclined in the same direction (in a parallel direction). And provided in a direction along the inner side surface 26b to be brought into contact (parallel to the inner side surface 26b). And it is made to contact with the inner surface 26b provided in each of the two slide wedges 26.

  In such a configuration, when the two connected slide wedges 26 are moved forward, each movable wedge portion 27a is pushed by the inner side surface 26b and resists the urging force of the gas spring mechanism 41 to the inside. It is moved toward. In this case, the bracket 23 is held at a position moved inward by the amount of movement of each movable wedge portion 27a. Further, when the two slide wedges 26 connected to each other are moved rearward, the movable wedge portions 27a are moved outward by the urging force of the gas spring mechanism 41 while being in contact with the inner side surface 26b. It is done. In this case, the bracket 23 is held at a position close to the outside by the amount of movement of each movable wedge portion 27a. Even with such a configuration, by adjusting the position of the slide wedge 26, the positions of the movable body 27, the blanket 23, and the rocker die 22 can be easily and appropriately adjusted.

  The movable body 27 includes two movable wedge portions 27a (two outer side surfaces 27c and two inner side surfaces 27d), and is configured to be held by the two slide wedges 26. However, the configuration is not limited thereto. That is, for example, as shown in FIG. 11, the movable body 27 includes one movable wedge portion 27 a (one outer surface 27 c and one inner surface 27 d), and is configured to be held by one slide wedge 26. You can also Further, as shown in FIG. 11, each slide wedge 26 is provided with one wedge moving mechanism 122 for moving the slide wedge 26, so that the position of each slide wedge 26 can be adjusted individually. May be. The wedge moving mechanism 122 may be substantially the same as that shown in FIG.

  In FIG. 10, the number of slide wedges 26 (inner side surfaces 26 b provided to be inclined in the same direction) moved in the same direction, or a movable wedge portion 27 a provided in the movable body 27. Although the number of the outer surfaces 27c provided to be inclined in the same direction is two, any number may be used. In other words, two or more slide wedges 26 adjacent to each other in the X direction are provided with inner side surfaces 26b provided to be inclined in the same direction, and a first movable body moving mechanism for moving these in the same direction. In addition, the number of movable wedge portions 27a provided on the movable body 27 (the outer surface 27c provided to be inclined in the same direction) may be two or more. The two or more outer surfaces 27c provided on the movable body 27 may be in contact with the inner surfaces 26b provided on the two or more slide wedges 26 adjacent to each other in the X direction. Even with such a configuration, by adjusting the position of the slide wedge 26, the positions of the movable body 27, the blanket 23, and the rocker die 22 can be easily and appropriately adjusted.

  In the above embodiment, each rocker die position adjustment system 25 includes two brackets 23, two slide wedges 26, one movable body 27, and two spacer insertion devices 31. The combination is not limited. For example, the rocker die position adjustment system 25 may be configured to include one bracket 23, one slide wedge 26, one movable body 27, and one spacer insertion device 31. Moreover, it can also be set as the structure provided with the two brackets 23, the one slide wedge 26, the one movable body 27, and the one spacer insertion apparatus 31. FIG.

  In the spacer insertion device 31, the gas spring 82 is used as the lowering biasing mechanism, but the lowering biasing mechanism is not limited to this, and for example, a configuration using the elastic force of a coil spring, etc. good. In addition, although the hydraulic cylinder mechanism 83 has been illustrated as an ascending drive mechanism, the ascending drive mechanism is not limited thereto. Further, for example, in the example shown in FIG. 8, the engaging tool 53 is operated in the vicinity of the stepped portion 35 to adjust the number of insertion spacers, but of course, these positions are separated from the stepped portion 35. An operation may be performed. For example, if there is not enough space in the vicinity of the stepped portion 35 and workability is poor, the spacer support 51 is moved to an arbitrary position with good workability, such as the outside of the bed 24, and the engagement tool 53 is operated. Just do it.

  In the U-press machine 12 in the above embodiment (first embodiment), the rocker die position adjusting system 25 includes a first movable body (slide wedge 26) that can move along the X direction and a Y direction. The second movable body (movable body 27) that can be moved is provided, but for example, a rocker die position adjustment system 125 as shown in FIG. 12, that is, tilted with respect to the X direction and in the Y direction. The position of the rocker die 22 can also be easily adjusted by the configuration using the third movable body that is movable along a predetermined direction (third movable body movement direction) inclined with respect to the third direction.

  FIG. 12 shows a plan view of the rocker die position adjustment system 125 provided in the U press according to the second embodiment. Such a rocker die position adjustment system 125 is provided as a third movable body guide surface provided on one edge of the bracket 23 and the bed 24 (on the side facing the punch 21 across the bracket 23 in the Y direction). Wedge guide surface 131, wedge 132 as a third movable body movable in a predetermined direction between bracket 23 and wedge guide surface 131, wedge moving mechanism 122 for moving wedge 132 with respect to wedge guide surface 131, bracket 23 and a spacer insertion device 31 for inserting the spacer 30 into a gap formed between the wedge 23 and the wedge 132.

  The rocker die position adjustment system 125 includes a continuous adjustment portion that can continuously adjust the position of the rocker die 22 and a step adjustment portion that can adjust the position of the rocker die 22 stepwise. It has become. The continuous adjustment portion includes a wedge guide surface 131, a wedge 132, and a wedge moving mechanism 122, and moves the wedge 132 in a predetermined direction with respect to the bed 24 in a stepless manner within a predetermined slide range. By doing so, the position of the bracket 23 relative to the bed 24 can be adjusted steplessly (continuously). The step adjusting portion is configured by the spacer insertion device 31, and the position of the bracket 23 with respect to the bed 24 is determined by selecting the number of spacers 30 (number of insertion spacers) to be inserted between the bracket 23 and the wedge 132. It can be adjusted stepwise and selectively according to the number of 30 sheets. Further, in the present embodiment, the continuous adjustment portion has a fine adjustment function capable of finely adjusting the position of the rocker die 22, and the step adjustment portion significantly changes the position of the rocker die 22. It has a possible coarse adjustment function.

  The bracket 23 and the spacer insertion device 31 of the rocker die position adjustment system 125 have substantially the same configuration as that described in the first embodiment. Similar to the first embodiment, the bed 24 includes a bed bottom surface 36, a bed top surface 37, and a bed inner side surface 38, and a protrusion provided so as to protrude inward from the bed inner side surface 38. An installation part 135 is provided. An inner side surface of the projecting portion 135 is a wedge guide surface 131. That is, the wedge guide surface 131 is provided inside the bed inner surface 38. In the illustrated example, the wedge guide surface 131 has a planar shape provided along a predetermined direction (a direction inclined with respect to the X direction and the Y direction) so as to gradually go inward as it goes from the front to the rear. Yes.

  The wedge 132 is provided so as to be sandwiched between the wedge guide surface 131 and the spacer 30 (bracket 23), and moves along the wedge guide surface 131 while being guided by the wedge guide surface 131. ing. The width in the Y direction is formed in a wedge shape so that the width gradually decreases from the base end side (the wedge moving mechanism 122 side, the front side) toward the tip end side (rear side). The outer surface 132a of the wedge 132 (the third movable body contact surface that abuts along the wedge guide surface 131) is inclined along a predetermined direction so as to gradually go inward from the proximal end side toward the distal end side. It is a flat surface provided. On the other hand, the inner side surface 132b of the wedge 132 has a planar shape formed along the XZ plane, and the spacer 30 lowered to the bed bottom surface 36 is brought into contact with the inner side surface 132b. It is like that. That is, the outer surface of the bracket 23 is held from the outside in the Y direction by the wedges 132 indirectly through the spacers 30, and indirectly by the wedge guide surfaces 131 through the spacers 30 and the wedges 132. It is held from the outside in the direction. The spacer 30 is not sandwiched between the bracket 23 and the inner side surface 132 b, that is, the bracket 23 is not brought into contact with the spacer 30 but is brought into contact with the inner side surface 132 b and held directly by the wedge 132. It is also possible to make a state. The height of the wedge 132 (dimension in the Z direction) may be substantially the same as the height of the bed inner surface 38 and the height of the protruding portion 135.

  The wedge moving mechanism 122 for moving the wedge 132 may be substantially the same as that shown in FIG. In the example shown in FIG. 12, the wedge moving mechanism 122 is installed on the proximal end side (front side) of the wedge 132. Further, the output shaft 42 c (rotation center shaft) of the geared motor 42 and the transmission screw 43 a provided in the wedge moving mechanism 122 are directed in a direction along the wedge guide surface 131. The nut 43 b is fixed to the base end portion (front end portion) of the wedge 132. That is, when the transmission screw 43a rotates, the nut 43b moves straight along the transmission screw 43a in the direction along the inclination direction of the wedge guide surface 131, and the wedge 132 slides in a predetermined direction integrally with the nut 43b. Is configured to do.

  In such a rocker die position adjustment system 125, for example, when the wedge 132 is moved toward the front end side (rear inner side), the outer surface 132a slides along a predetermined direction while contacting along the wedge guide surface 131. The inner side surface 132b is translated toward the rear inner side while maintaining the posture along the XZ plane. In this case, the spacer 30 lowered to the bed bottom surface 36 is held in contact with the inner side surface 132b at a position close to the outside. Accordingly, the bracket 23 is held at a position that is moved outward by an amount of movement of the inner side surface 132b.

  For example, when the wedge 132 is moved toward the base end side (front outer side), the outer side surface 132a slides along a predetermined direction while contacting along the wedge guide surface 131, and the inner side surface 132b becomes X−. While maintaining the posture along the Z plane, it is translated toward the front outer side. In this case, the spacer 30 lowered to the bed bottom surface 36 is held in contact with the inner side surface 132b at a position close to the outside. Accordingly, the bracket 23 is held at a position that is moved outward by an amount of movement of the inner side surface 132b.

  According to the second embodiment, the inner surface 132b is moved in the Y direction by moving the wedge 132 in a predetermined direction (a direction inclined with respect to the X direction and a direction inclined with respect to the Y direction). Can be made. Thereby, the position of the blanket 23, that is, the position of the rocker die 22 can be easily and appropriately adjusted. For example, when the position of the rocker die 22 is changed within a relatively small range, or when fine adjustment is performed, the spacer 30 and the spacer 30 are simply adjusted by adjusting the position of the wedge 132 without performing the insertion and removal operations of the spacer 30. The position of the blanket 23 can be slid and the position of the rocker die 22 can be quickly adjusted. On the other hand, for example, when the position of the rocker die 22 is changed relatively greatly, the rough adjustment is performed by inserting and removing the spacer 30 by the spacer inserting device 31 so that the position of the rocker die 22 can be efficiently adjusted. Can be adjusted.

  The present invention can be applied to, for example, a U press machine used when manufacturing a UO steel pipe, a UOE steel pipe, and the like, and a rocker die position adjusting method of the U press machine.

It is explanatory drawing which showed the outline of the steel pipe manufacturing equipment. It is a side view of the U press machine concerning a first embodiment. It is a top view of the rocker die position adjustment system with which the U press concerning a first embodiment is equipped. It is a side view of a rocker die position adjustment system. It is a top view of a spacer insertion apparatus. It is a front view of a spacer insertion apparatus. It is the side view of the rocker die position adjustment system which showed the state before inserting a spacer between a bracket and a movable body. It is the side view of the rocker die position adjustment system which showed a mode that a raising / lowering body was raised with respect to a spacer support body, and an engagement tool was inserted. It is the side view of the rocker die position adjustment system which showed a mode that a raising / lowering body was lowered | hung with respect to a spacer support body, and the spacer was selectively lowered | hung. It is a top view explaining embodiment which made the inner surface of two slide wedges, and the two outer surfaces of a movable body incline in the same direction mutually. It is a top view explaining embodiment made into the structure which hold | maintains one movable body with one slide wedge. It is a top view of the rocker die position adjustment system with which the U press concerning 2nd embodiment is equipped.

Explanation of symbols

2 Molded material 3 Steel pipe manufacturing equipment 12 U press machine 21 Punch 22 Rocker die 23 Bracket 24 Bed 25 Rocker die position adjustment system 26 Slide wedge (first movable body)
26a Slide wedge outer surface 26b Slide wedge inner surface (first movable body contact surface)
27 Movable body (second movable body)
27a Movable wedge portion 27c Outside surface of movable wedge portion (second movable body contact surface)
26d Inner side surface of movable wedge portion 30 Spacer 31 Spacer insertion device 35 Stepped portion 40 Wedge moving mechanism 41 Gas spring mechanism

Claims (14)

A U-press machine for U-forming steel plates,
A punch that contacts the upper surface of the steel plate, a rocker die that contacts the lower surface of the steel plate, and a bracket that supports the rocker die,
The bracket is movable along the width direction of the steel plate,
On the side facing the punch across the bracket in the width direction of the steel plate, provided with a first movable body movable along the length direction of the steel plate,
A second movable body movable between the bracket and the first movable body along the width direction of the steel plate;
The first movable body is provided with a first movable body contact surface that comes into contact with the second movable body so as to be inclined with respect to the width direction and the length direction of the steel plate,
The second movable body is provided with a second movable body contact surface that contacts the first movable body contact surface in a direction along the first movable body contact surface. A U press machine. The U press according to claim 1, further comprising a plurality of spacers that can be inserted between the bracket and the second movable body. A bed for holding the bracket;
The bed includes an inner surface of the bed erected upward from a surface on which the bracket is placed on the edge of the bed,
The U press according to claim 1, wherein the first movable body moves along the inner surface of the bed. 4. The U according to claim 1, further comprising a second movable body urging mechanism that urges the second movable body in a direction in which the second movable body is pressed against the first movable body. Press machine. A plurality of the first movable bodies;
A first movable body moving mechanism that moves the two first movable bodies adjacent in the length direction of the steel plate in synchronization with each other in opposite directions;
The first movable body contact surfaces provided respectively on the two adjacent first movable bodies are provided to be inclined in opposite directions to each other,
The second movable body includes two second movable body contact surfaces,
The two second movable body contact surfaces are respectively brought into contact with first movable body contact surfaces provided on the two adjacent first movable bodies. The U press machine in any one of 1-4. A plurality of the first movable bodies;
A first movable body moving mechanism for moving two or more first movable bodies adjacent in the length direction of the steel plate toward each other in the same direction;
The first movable body contact surfaces provided respectively in two or more first movable bodies adjacent in the length direction of the steel plate are provided to be inclined in the same direction.
The second movable body includes two or more second movable body contact surfaces,
The two or more second movable body contact surfaces are respectively brought into contact with first movable body contact surfaces provided on two or more first movable bodies adjacent in the length direction of the steel plate. The U-press machine according to any one of claims 1 to 4, wherein A U-press machine for U-forming steel plates,
A punch that contacts the upper surface of the steel plate, a rocker die that contacts the lower surface of the steel plate, and a bracket that supports the rocker die,
The bracket is movable along the width direction of the steel plate,
On the side facing the punch across the bracket in the width direction of the steel plate, a third movable body that is movable along a predetermined direction,
The said predetermined direction is the direction inclined with respect to the width direction of the said steel plate, and the direction inclined with respect to the length direction of the said steel plate, U press machine characterized by the above-mentioned. On the side facing the punch across the bracket in the width direction of the steel plate, provided with a third movable body guide surface provided along the predetermined direction,
The U press according to claim 7, wherein the third movable body moves along the third movable body guide surface. The U press according to claim 7 or 8, comprising a plurality of spacers that can be inserted between the bracket and the third movable body. In a U press machine for U-forming a steel plate using a punch and a rocker die, a method of adjusting the position of the rocker die in the width direction of the steel plate,
On the side facing the punch across the bracket that supports the rocker die in the width direction of the steel plate, the first movable body is moved along the length direction of the steel plate,
With the movement of the first movable body, the second movable body is moved along the width direction of the steel plate,
A rocker die position adjusting method for a U press machine, wherein the second movable body holds the bracket from the side facing the punch in the width direction of the steel plate. The rocker die position adjusting method for a U press machine according to claim 10, wherein the bracket is held in a state where a plurality of spacers are inserted between the second movable body and the bracket. In a state where the first movable body contact surface provided on the first movable body is inclined with respect to the width direction and the length direction of the steel plate, the first movable body is set to the length of the steel plate. Move along the direction,
While bringing the second movable body contact surface provided on the second movable body into contact with the first movable body contact surface, the second movable body is moved along the width direction of the steel plate. The method for adjusting a rocker die position of a U-press machine according to claim 10 or 11, wherein the position is moved. In a U press machine for U-forming a steel plate using a punch and a rocker die, a method of adjusting the position of the rocker die in the width direction of the steel plate,
Inclined with respect to the width direction of the steel sheet and inclined with respect to the length direction of the steel sheet on the side facing the punch across the bracket supporting the rocker die in the width direction of the steel sheet Move the third movable body along the predetermined direction,
A rocker die position adjusting method for a U press machine, wherein the third movable body holds the bracket from the side facing the punch in the width direction of the steel plate. The rocker die position adjusting method of the U press machine according to claim 13, wherein the bracket is held in a state where a plurality of spacers are inserted between the third movable body and the bracket.

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