JP4458013B2 - Work positioning method and apparatus - Google Patents

Description

  The present invention relates to a workpiece positioning method and apparatus for positioning workpieces when butt welding the workpieces.

  In recent years, as a molding material for automotive panel parts, etc., what is called a tailored blank material in which multiple steel plates with the same thickness or strength or different thickness and strength are butt welded and integrated Is used. When press-molding the tailored blank material and manufacturing a panel part etc., a press process can be reduced compared with the case where it welds, after press-molding each steel plate.

  2. Description of the Related Art Conventionally, as a welding apparatus that forms a production work such as a tailored blank material by butt welding a work such as a steel plate, for example, one described in Patent Document 1 is known. The welding apparatus welds two workpieces along a linear welding line, and a table on which the workpiece is placed is divided into two by the linear welding line. The two divided tables are configured to be able to contact and separate from each other, and one table is provided with a reference plate for defining a welding line on one side facing the other table.

  When positioning a workpiece, first, the workpiece placed on one table is abutted against the reference plate in a state where the tables are separated. Then, after retracting the reference plate below the tables, the tables are brought close to each other, and the work placed on the other table is abutted against the work on one table and positioned.

  In this welding apparatus, a space for retracting the reference plate is secured by dividing the table.

JP 2001-287090 A

  By the way, when manufacturing a door panel of an automobile using a tailored blank material, a work having a right-angle notch and a work having a right-angle corner are butted against each other at the notch and the corner, and the panel is welded. Members may be formed. In that case, the welding line set to the workpiece is L-shaped.

However, in the above-described welding device, although it is possible to position the workpiece relative to the straight weld line, it was not possible to position the workpiece with respect to the weld line of the L-shaped.

  Accordingly, an object of the present invention is to provide a workpiece positioning method and apparatus capable of solving the above-described problems and positioning a workpiece with respect to an L-shaped weld line.

In order to achieve the above object, the present invention comprises a main plate portion and a convex plate portion, and has a right-angled cutout portion, and the cutout portion extends integrally from the transverse inner welded side portion of the main plate portion and the main plate portion. A notched workpiece partitioned by the longitudinally inner welded side of the convex plate, a laterally outer welded side that is abutted against the laterally inner welded side of the notched workpiece, and a longitudinally abutted against the longitudinally inner welded side A method of positioning these workpieces when joining and welding a joint workpiece having an outer weld side, wherein the table on which the workpiece is arranged is a main table holding the main plate portion and the convex plate portion or a pair of sub-table holding the splicing work, the main table, movably mounted in the longitudinal direction in a horizontal plane, the said pair of sub-tables, reference next to the main table orthogonal to the longitudinal direction The workpiece is positioned so as to be movable in the vertical and horizontal directions, and (a) the workpiece is positioned at a predetermined interval with respect to the cutout portion of the cutout workpiece. Placing the notched workpiece on the main table and the joining workpiece on either the left or right sub-table so as to be positioned, and (b) the laterally inner welded side of the notched workpiece on the main table. A step of projecting a notch workpiece reference member for positioning on the reference lateral side of the table upward from the upper surface of the main table along the reference lateral side of the main table; and (c) disposed on the main table have been the lateral inner welding side portions of the notch workpiece, the protruding plate portion of Rutotomoni the notch workpiece abutting to the cut-out workpiece reference member is placed on the other subtable And as the vertical inner welding side portion of the notch workpiece is positioned between the pair of sub-tables, the combined lateral position of the notch workpiece, thereby, the steps of positioning the notches workpiece with respect to the main table (D) holding the notched workpiece positioned with respect to the main table on the main table; and (e) the one sub-table with the laterally outer welded side of the joint workpiece facing the main table. A joint workpiece reference member for positioning on the reference lateral side of the joint is projected upward from the upper surface of the subtable along the reference lateral side of the subtable, and the longitudinal outer welded side of the jointwork is The joint work side reference member for positioning on the reference vertical side of the one sub table facing the sub table is A step of projecting upward from the upper surface of the sub-table along the reference vertical side, and (f) the lateral outer side of the joint disposed on the one sub-table is butted against the joint reference member And a step of positioning the joint work with respect to the one sub-table by abutting the longitudinal outer side of the joint with the joint-work side reference member, and (g) positioning with respect to the sub-table. A step of holding the joined workpiece in the sub-table; and (h) a joint reference member of the sub-table holding the joint workpiece while retracting the notched workpiece reference member of the main table below the main table. And a step of retracting the joint work side reference member below the sub-table, and (i) a laterally inner side of the notched work Either or both of the main table holding the notched workpiece and the sub-table holding the joint workpiece are moved in the vertical direction so that the contact portion and the laterally outer welded side portion of the joint workpiece abut each other. And the sub-table holding the joint work is moved laterally so that the longitudinal inner welded side of the notched work and the longitudinal outer welded side of the joint work abut each other. And (j) a step of holding the notched workpiece convex plate portion on the sub table on which the convex plate portion of the notched workpiece is placed on the sub table .

  Preferably, the notched work includes a main plate portion having the lateral inner weld side portion and a convex plate portion extending integrally from the main plate portion and having the vertical inner weld side portion, and in the step (a) When the cut-out work is arranged on the main table, the vertically inner welded side of the convex plate part is arranged between the pair of sub-tables.

  Preferably, in the step (b), the notch workpiece reference member includes a plurality of notch workpiece reference pins, and the plurality of notch workpiece reference pins extend along the reference lateral side of the main table and can be raised and lowered. The notch workpiece reference pin driving plate is attached to the notch workpiece reference pin support plate with a gap, and the notch workpiece reference pin driving means is connected to the notch workpiece reference pin support plate, and the notch workpiece reference pin driving means is used to The pin support plate is rotated so as to stand up horizontally from the prone state, whereby the notch work reference pin provided on the notch work reference pin support plate is moved along the reference lateral side of the main table. It protrudes upward from the upper surface of the main table.

  Preferably, in the step (b), the notch workpiece reference member is provided on the reference lateral side of the main table so as to face the pair of sub-tables, and a pair of left and right notch workpiece references. As for the member, the notch work reference member located on the sub-table side where the joint work is disposed protrudes upward from the upper surface of the main table, and the notch work reference member located on the other sub-table side is located below the main table. The evacuation state is set.

  Preferably, in the step (c), the laterally inner welded side of the notched workpiece is first butted against the notched workpiece reference member, and then the longitudinally inner welded side of the notched workpiece is It is located between the pair of sub-tables.

  Preferably, in the step (c), the notch workpiece is abutted against the notch workpiece reference member by moving the notch workpiece pusher protruding from the upper surface of the main table in the vertical direction while pressing the notch workpiece against the notch workpiece. The laterally inner welded side of the notched workpiece is moved toward the notched workpiece reference member, and the lateral alignment of the notched workpiece is performed from the upper surface of the main table on both lateral sides of the notched workpiece. At least a pair of notched workpiece side pushers that protrude is moved laterally to a predetermined position, and the longitudinal inner weld side of the notched workpiece is positioned between the pair of sub-tables.

  Preferably, in the step (d), the entire lateral direction of the notch work is pressed in the vicinity of the inner side of the notch work to hold the notch work on the main table.

  Preferably, in the step (e), the joint workpiece reference member includes a plurality of joint workpiece reference pins, and the plurality of joint workpiece reference pins are arranged on the reference lateral side of the sub-table on which the joint workpiece is arranged. A joint work reference pin drive means is connected to the joint work reference pin support plate that extends along the base plate and is provided with a space therebetween, and the joint work reference pin drive means is connected to the joint work reference pin support plate. The joint workpiece reference pin support plate is rotated so as to stand up horizontally from the lying state, so that the joint workpiece reference pin provided on the joint workpiece reference pin support plate is Projecting upward from the upper surface of the sub-table along the reference lateral side, the joint work side reference member includes a plurality of joint work side reference pins. The plurality of joint work side reference pins extend along the reference vertical side of the sub-table on which the joint work is arranged, and are spaced apart from the joint work side reference pin support plate provided so as to be freely raised and lowered. The joint work side reference pin drive means is connected to the joint work side reference pin support plate, and the joint work side reference pin drive means is used to stand the joint work side reference pin support plate from the prone state horizontally. Accordingly, the joint work side reference pin provided on the joint work side reference pin support plate protrudes upward from the upper surface of the sub table along the reference vertical side of the sub table. Is.

  Preferably, in the step (f), the transverse outer side welded side portion of the joint work is first butted against the joint workpiece reference member, and then the longitudinal outer welded side portion of the joint workpiece is placed in the abutted state. It matches with the joint work side reference member.

  Preferably, in the step (f), the joining of the joining work to the joining work reference member is performed by pressing a joining work pusher protruding from the upper surface of the sub-table on which the joining work is placed against the joining work. However, it is performed by moving in the vertical direction and moving the lateral outer weld side of the joint workpiece toward the joint workpiece reference member, and the joining of the joint workpiece to the joint workpiece side reference member is performed by The joint work side pusher protruding from the upper surface of the arranged sub-table is moved in the horizontal direction while pressing against the joint work, and the longitudinal outer side of the joint is moved toward the joint work side reference member. Is done.

  Preferably, in the step (g), the joint work is pressed in the vicinity of the lateral outer weld side and the longitudinal outer weld side to hold the joint work on the sub-table.

  Preferably, in the step (h), the retraction of the notch work reference pin is performed by rotating the notch work reference pin support plate downward from a horizontal state by the notch work reference pin driving means. .

  Preferably, in the step (h), the joint workpiece reference pin is retracted by the joint workpiece reference pin driving means rotating the joint workpiece reference pin support plate downward from a horizontal state. The work side reference pin is retracted by rotating the joint work side reference pin support plate downward from the horizontal state by the joint work side reference pin driving means.

  Preferably, in the step (c), the notched workpiece is positioned with respect to the main table such that a laterally inner welded side thereof protrudes from the reference lateral side of the main table, and the step (f) The joint work has a laterally outer welded side protruding from the reference lateral side of the sub-table, and a longitudinally outer welded side of the joint work projected from the reference vertical side of the sub-table. In addition, it is positioned with respect to the sub-table.

  Preferably, in the step (i), an interval between the main table in which the notched work is arranged and a sub table in which the joint work is arranged, and a sub table in which the joint work is arranged and the other sub table The notched work and the joint work are positioned so that the distance between them becomes a desired distance for welding.

In order to achieve the above object, the present invention comprises a main plate portion and a convex plate portion, and has a right-angled cutout portion, and the cutout portion extends integrally from the transverse inner welded side portion of the main plate portion and the main plate portion. A notched workpiece partitioned by the longitudinally inner welded side of the convex plate, a laterally outer welded side that is abutted against the laterally inner welded side of the notched workpiece, and a longitudinally abutted against the longitudinally inner welded side A device for positioning these workpieces when joining and welding a joint workpiece having an outer welded side, and the main table on which the notched workpiece is arranged, and the main table are moved in the vertical direction in a horizontal plane a main table moving means for, are arranged side by side in the right and left along the reference horizontal side of the main table orthogonal to the longitudinal direction, the splicing work is arranged on one right or left, while the notch A pair of sub-tables convex plate portion of the over clause Ru is placed, a sub-table that the splicing work is placed, and the sub-table moving means for moving vertically and horizontally, the horizontal inner welding side portions of the notch workpiece And a notch workpiece reference member for positioning on the reference lateral side of the main table, the notch workpiece reference member protruding upward from the upper surface of the main table along the reference lateral side of the main table. A notch work reference device and a notch work pusher protruding from the upper surface of the main table, and the notch work pusher is moved in the vertical direction while being pressed against the notch work arranged on the main table. A notch work guide for moving the laterally inner welded side of the notch work toward the notch work reference member, and a small amount protruding from the upper surface of the main table. Both of them have a pair of notch work side pushers, and these notch work side pushers are moved laterally to a predetermined position while being pressed against both lateral sides of the notch work, and welded vertically inside the notch work. A notch work side guide for positioning a side part between the pair of sub-tables, and a notch work holding means for pressing the upper surface of the notch work arranged on the main table and holding the notch work on the main table. And a joint workpiece reference member for positioning the laterally outer welded side portion of the joint workpiece on a reference lateral side facing the main table of the sub-table on which the joint workpiece is disposed, and the joint workpiece reference member A joint work reference device that protrudes upward from the upper surface of the sub-table along the reference lateral side of the sub-table on which the joint work is disposed, A joint work side reference member for positioning the longitudinal outer welded side of the joint work on a reference vertical side facing the other sub-table of the sub-table on which the joint work is disposed, and the joint work side reference From the upper surface of the sub-table where the joint work is arranged, and the joint work side reference device that projects the member upward from the upper surface of the sub-table along the reference vertical side of the sub-table where the joint work is arranged It has a projecting work piece pusher that protrudes, and moves the work piece pusher in the vertical direction while pressing the work piece pusher against the joint work, and moves the laterally outer welded side of the joint work toward the joint work reference member. A joint work guide and a joint work side pusher protruding from the upper surface of the sub-table on which the joint work is arranged, and the joint work side pusher is connected to the joint work The joint work side guide that moves laterally while pressing and moves the longitudinal outer weld side of the joint work toward the joint work side reference member and the upper surface of the joint work arranged on the sub-table are pressed. The joint work holding means for holding the joint work on the sub-table and the joint work holding for holding the notch work convex plate part on the other sub-table on which the notch work convex plate part is placed on the sub-table. Means .

  Preferably, the main table is formed with a vertical opening for moving the notch work pusher and a horizontal opening for moving the notch work side pusher.

  Preferably, the sub-table on which the joint work is arranged is formed with a vertical opening for moving the joint work pusher and a horizontal opening for moving the joint work side pusher. is there.

  Preferably, the notch workpiece reference device includes a notch workpiece reference pin support plate which extends along the reference lateral side of the main table and is provided so as to be undulated, and is spaced along the notch workpiece reference pin support plate. A plurality of notch workpiece reference pins that are attached to form the notch workpiece reference member, and a notch workpiece reference pin driving means that is connected to the notch workpiece reference pin support plate and rotates the notch workpiece reference pin support plate. Is.

  Preferably, a pair of left and right cutout workpiece reference members are provided on the reference lateral side of the main table so as to face the pair of sub-tables, respectively.

  Preferably, the notch work pusher, the notch work side pusher, the joint work pusher, and the joint work side pusher are in contact with the sides of the opposing work and press the work, A housing that movably houses the pressing member and an urging means that is provided in the housing and urges the workpiece with a predetermined pressing force in the pressing direction via the pressing member.

  Preferably, the pressing member of the notch work pusher and the joint work pusher includes a slide portion movably accommodated in the housing, and a roller portion supported by the slide portion so as to be rotatable in the horizontal direction. It is what has.

  Preferably, the notch work holding means and the joint work holding means include a holding beam provided along the reference horizontal side and the reference vertical side of each table, and an elevating member provided on the holding beam so as to be raised and lowered. A plurality of work pressing blocks provided on the lower surface of the lifting member, and lifting means for lifting and lowering the lifting member, the lifting member is lowered by the lifting means, The workpiece placed on the table is pressed.

  Preferably, the joint work reference device includes a joint work reference pin support plate that extends along the reference lateral side of the sub-table on which the joint work is arranged and is provided so as to be undulated, and the joint work reference pin support plate. A plurality of joint workpiece reference pins that are attached at intervals along the joint workpiece to form the joint workpiece reference member, and a joint workpiece reference pin that is connected to the joint workpiece reference pin support plate and rotates the joint workpiece reference pin support plate Drive means.

  Preferably, the joint work side reference device includes a joint work side reference pin support plate that extends along the reference vertical side of the sub-table on which the joint work is arranged and is provided so as to be undulated, and the joint work side reference. A plurality of joint work side reference pins that are mounted at intervals along the pin support plate to form the joint work side reference member, and are connected to the joint work side reference pin support plate and rotate the joint work side reference pin support plate. For this purpose, a joint work side reference pin driving means is provided.

  Using the workpiece positioning device according to claim 16, when abutting and welding flat workpieces having linear weld sides, the pair of sub-tables are connected to each other on the left and right, and the connected sub-tables and After placing the main table so as to face each other, one flat plate work is placed on the main table, and the other is placed on the connected sub-table, and the welded side portions of the flat work are opposed to each other with a gap therebetween. And positioning the one flat plate arranged on the main table with respect to the main table, and positioning the other flat plate work arranged on the sub table with respect to the sub table, The main side is welded so that the welded side of the one flat plate work and the welded side of the other flat plate work are brought into contact with each other. Move the table and the sub-table, thereby, may be positioning the flat workpiece.

  ADVANTAGE OF THE INVENTION According to this invention, when butt-welding a workpiece | work, the outstanding effect that the workpiece | work can be positioned with respect to an L-shaped welding line is exhibited.

  Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

  First, a workpiece targeted by the workpiece positioning device of this embodiment will be described with reference to FIG.

  As shown in FIG. 14A, a notch workpiece 300 includes a main plate portion 304 having a laterally inner welded side portion 300a, and a convex plate portion 305 having a longitudinally inner welded side portion 300b extending integrally from the main plate portion 304. (A boundary line between the main plate portion 304 and the convex plate portion 305 is indicated by a dotted line B in FIG. 14A). A cutout 301 having a right angle is defined by the lateral inner weld side 300a and the longitudinal inner weld side 300b.

  The joint workpiece 310 has a corner portion 311 that is abutted against the right-angled notch portion 301 of the notch workpiece 300, and the corner portion 311 is a transverse outer weld side portion that is abutted against the transverse inner weld side portion 300 a of the notch workpiece 300. It is divided by 310a and the vertical outer side welding edge part 310b faced by the vertical inner side welding edge part 300b.

  In this embodiment, the notched workpiece 300 and the joint workpiece 310 are butt-welded to form a so-called tailored blank material.

  The workpiece positioning apparatus of this embodiment is used for a butt welding apparatus that butt welds workpieces and the like.

  The schematic structure of the butt welding apparatus will be described with reference to FIG.

  As shown in FIG. 1, a butt welding apparatus 200 is welded with welding stations 201 and 201 for butt welding workpieces (members to be welded, blank materials), and a loading station 202 for supplying workpieces to the welding stations 201. A carry-out station 203 for collecting the welded product (frame body, production work) and a conveying means for carrying the work from the carry-in station 202 to the weld station 201 and carrying out the welded product from the weld station 201 to the carry-out station 203 (see FIG. Not shown).

  The carry-in station 202 has a carry-in cart 206 that can move on the rail 205, and a work is placed on the carry-in cart 206. The conveying means includes an adsorption means for adsorbing the workpiece and the welded article, and an orthogonal biaxial robot for moving the adsorption means in the horizontal direction. Similarly to the carry-in station 202, the carry-out station 203 has a carry-out carriage 210 that can move on the rail 209, and a welded product is placed on the carry-out carriage 210.

  Also, the butt welding apparatus 200 receives a defective product for collecting a DB material detected by a DB material (double blank material) inspection device (not shown), a suspicious product detected by the welding inspection device 215, and the like. 211 is provided, and a defective material or the like is transported by a transport mechanism (specifically, a gantry carriage) 204 and is collected by the defective product receiver 211 via the payout conveyor 211a.

  The welding station 201 includes a workpiece positioning device 1 and a welding processing device 212. The workpiece carried into the welding station 201 is arranged on the workpiece positioning device 1 and is positioned and held by the workpiece positioning device 1. The held workpiece is welded by the welding processing device 212, and the formed welded product is conveyed to the predetermined unloading position P by the ejector 213. Between the unloading position P and the welding processing device 212, an embossing device 214 for embossing the welded product in order to prevent collapse of the load and a welding inspection device 215 for inspecting the welded product for welding failure are provided. It is done.

  Next, a schematic structure of the workpiece positioning device 1 of the present embodiment will be described based on FIG. In FIG. 2, notched workpiece holding means 14 and joint workpiece holding means 15 (see FIG. 10), which will be described later, are omitted.

  As shown in FIG. 2, the workpiece positioning apparatus 1 according to the present embodiment includes a main table 2 and a pair of sub tables 3 and 3.

  In the present embodiment, the main table 2 is configured to be movable in a predetermined direction (up and down in FIG. 2) on a horizontal plane. Assuming that the moving direction of the main table 2 is the vertical direction, the pair of sub-tables 3 and 3 are arranged so as to be arranged side by side along the reference horizontal side 2a of the main table 2 orthogonal to the vertical direction. . Here, the horizontal direction (left and right in FIG. 2) refers to a direction orthogonal to the vertical direction.

  The main table 2 is opposed to the sub-tables 3 and 3 and extends in the lateral direction. The main table 2 extends vertically outward (upward in FIG. 2) with respect to the inner main table 21 via a gap G1. The outer main table 22 is arranged.

  The outer main table 22 is composed of a plurality of solid bars 24 arranged at intervals in the horizontal direction. A gap G2 extending in the vertical direction is formed between the bar members 24, and the gap G2 forms a vertical opening for moving a notch workpiece pusher 101 described later. Further, the outer main table 22 is provided with a gap G3 extending in the horizontal direction at an intermediate position in the vertical direction, and the gap G3 and the gap G1 between the inner main table 21 and the outer main table 22 described above. A lateral opening for moving a notch work side pusher 111 described later is formed.

  Each of the sub-tables 3 has an L-shaped inner sub-table 31 facing the main table 2 and the other sub-table 3 and a longitudinally outer side (lower side in FIG. 2) with respect to the inner sub-table 31. The outer sub-table 32 is disposed via the gap G4.

  Similar to the outer main table 22, the outer sub-table 32 is composed of a plurality of solid bars 34 arranged at intervals in the lateral direction. A gap G5 extending in the vertical direction is formed between the bars 34, and the gap G5 forms a vertical opening for moving a joint work pusher 121 described later. Further, the outer subtable 32 is provided with a gap G6 extending in the horizontal direction at an intermediate position in the vertical direction, and the gap G6 and the gap G4 between the inner subtable 31 and the outer subtable 32 described above. A lateral opening for moving a joint work side pusher 131 to be described later is formed.

  The bars 24 and 34 constituting the outer main table 22 and the outer sub-table 32 may be hollow.

  As shown in FIG. 3, the workpiece positioning apparatus 1 includes a main table moving means 4 for moving the main table 2 in the vertical direction, and a sub table moving means for moving the pair of sub tables 3 and 3 vertically and horizontally. 5.

  The main table moving means 4 includes a pedestal 41 that supports the main table 2, a linear guide 42 that guides the pedestal 41 in the vertical direction (left and right in FIG. 3), and a cylinder device 43 that forms drive means for moving the pedestal 41. With. The cylinder device 43 has a piston 43 a that can move forward and backward in the vertical direction, and the tip of the piston 43 a is connected to the base 41. The main table 2 moves in the vertical direction via the pedestal 41 as the piston 43a of the cylinder device 43 advances and retreats.

  The sub-table moving means 5 moves the upper pedestal 54 that supports the sub-table 3, the upper linear guide 55 that guides the upper pedestal 54 in the lateral direction (front and back in FIG. 3), and the upper pedestal 54 in the lateral direction. An upper cylinder device (not shown) that constitutes a driving means for performing the above operation, an upper pedestal 54, an upper linear guide 55, a lower pedestal 51 on which the upper cylinder device is placed, and the lower pedestal 51 guided in the vertical direction. A lower linear guide 52 and a lower cylinder device 53 serving as a driving means for moving the lower pedestal 51 in the vertical direction. The upper cylinder device has a piston that is connected to the upper pedestal 54 at the front end and can move forward and backward, and the lower cylinder device 53 has a piston 53a that is connected to the lower pedestal 51 and can move forward and backward in the vertical direction.

  When the piston of the upper cylinder device advances and retracts, the sub table 3 moves in the horizontal direction, and when the piston 53a of the lower cylinder device 53 advances and retracts, the sub table 3 moves in the vertical direction. The directions of the linear guides 52 and 55 and the cylinder device 53 may be switched between the upper side and the lower side so that the upper base 54 moves in the vertical direction and the lower base 51 moves in the horizontal direction. The sub table moving means 5 described above is provided in each sub table 3.

  Returning to FIG. 2, the main table 2 is provided with a notched workpiece reference device 7 on the side (reference lateral side 2 a) facing the sub-table 3. The notch workpiece reference device 7 has a notch workpiece reference member 71 protruding upward from the upper surface of the main table 2 along the reference lateral side 2a.

  As shown in FIGS. 4 to 6, the notch workpiece reference device 7 includes a notch workpiece reference pin support plate 72 that extends along the reference lateral side 2 a of the main table 2 and that can be raised and lowered, and the notch workpiece reference pin. A plurality of notch workpiece reference pins 73 which are attached to the support plate 72 and form the notch workpiece reference member 71, and a notch workpiece reference pin drive for rotating the notch workpiece reference pin support plate 72 connected to the notch workpiece reference pin support plate 72. Means.

  Specifically, a frame member 75 is provided below the inner main table 21 so as to extend in the lateral direction (the front and back sides in FIG. 4 and FIG. 5). The frame member 75 extends along the frame member 75. A support shaft 76 is provided so as to be rotatable. A notch workpiece reference pin support plate 72 is fixed to the support shaft 76. As shown in FIG. 6, a motor (specifically, a servo motor) 74 serving as a notch workpiece reference pin driving unit is connected to one end of the support shaft 76.

  By operating the motor 74, the notch workpiece reference pin support plate 72 rotates about the support shaft 76 via the support shaft 76. Thereby, the notch workpiece reference pin support plate 72 is in a horizontal state in which the arrangement surface on which the notch workpiece reference pin 73 is arranged stands substantially horizontally, or the entire notch workpiece reference pin support plate 72 is positioned below the main table 2. As a result, the arrangement surface is inclined.

  When the notch workpiece reference pin support plate 72 is in a horizontal state, the notch workpiece reference pin 73 protrudes upward from the upper surface of the main table 2. The protruding notch workpiece reference pins 73 are positioned at a distance from the reference horizontal side 2a of the main table 2 in the vertical direction (left and right in FIG. 4) (see FIG. 4). On the other hand, when the notch workpiece reference pin support plate 72 is in the lying state, the notch workpiece reference pin 73 is retracted below the inner main table 21 (see FIG. 5).

  A pair of left and right cutout workpiece reference devices 7 configured as described above are provided so as to face the pair of sub-tables 3 and 3 (see FIG. 6).

  Returning to FIG. 2, the sub-table 3 is provided with a joint work reference device 8 on the side facing the main table 2, and the joint work side reference device 9 is provided on the side facing the other sub-table 3. . The joint workpiece reference device 8 and the joint workpiece side reference device 9 have the same general structure as the notch workpiece reference device 7 described above, and the joint workpiece reference pin 83 of the joint workpiece reference device 8 and the joint workpiece side reference device 9. The joint work side reference pins 93 are arranged in an L shape in plan view so as to form a substantially right angle as a whole.

  As shown in FIG. 6, the joint workpiece reference pin 83 (joint workpiece reference member 81) of the joint workpiece reference device 8 is fixed to the joint workpiece reference pin support plate 82, and the reference lateral side 3a of the sub-table 3 (see FIG. 2). ). The joint workpiece reference pin 83 protrudes upward from the upper surface of the sub-table 3 when the joint workpiece reference pin support plate 82 is rotated and positioned in a horizontal state by the joint workpiece reference pin driving means 84.

  The joint work side reference pin 93 (joint work side reference member 91) of the joint work side reference device 9 is fixed to the joint work side reference pin support plate 92 and extends along the reference vertical side 3b (see FIG. 2) of the subtable 3. Arranged. The joint work side reference pin 93 protrudes upward from the upper surface of the sub-table 3 when the joint work side reference pin support plate 92 is rotated and positioned in a horizontal state by the joint work side reference pin driving means 94.

  Returning to FIG. 2, the main table 2 is provided with a notch work guide 10 having a notch work pusher 101 disposed between the bars 24 (vertical opening) and protruding upward from the upper surface of the main table 2 (FIG. 2). Then, only the pusher 101 is shown). Each notch work guide 10 has two notch work pushers 101 and 101 adjacent to each other, and two notch work guides 10 are provided side by side in the horizontal direction.

  Note that the arrangement and number of the notch work pushers 101 and the notch work side pushers 111 described later are set according to the work (for example, the above-described notch work 300) arranged on the main table 2.

  As shown in FIG. 3, the notch work guide 10 includes notch work pusher moving means 102 for moving the notch work pusher 101 in the vertical direction. The notch workpiece pusher moving means 102 is a movement that meshes with a cylindrical guide portion 103 that extends in the vertical direction and a ball screw (not shown) that is guided by the guide portion 103 and provided in the guide portion 103. A block 104 and a motor (specifically, a servo motor) 105 that rotationally drives the ball screw are provided, and a notched workpiece pusher 101 is attached to the moving block 104.

  By operating the motor 105, the notch work pusher 101 moves in the vertical direction via the moving block 104, and the notch work pusher 101 is moved while being pressed against the work placed on the main table 2. The workpiece moves in the vertical direction.

  Furthermore, in this embodiment, a slider device for moving the notch work guide 10 in the lateral direction (front and back in FIG. 3) is provided. The slider device includes a pedestal 172 that is guided laterally by a linear guide 171 and supports the notched work guide 10, and driving means that moves the pedestal 172 (for example, a cylinder device or a rack and pinion device driven by a servo motor) (see FIG. Not shown).

  As shown in FIG. 7, the notch work guide 10 of this embodiment includes a pusher lifting / lowering means 106 for retracting the notch work pusher 101 below the outer main table 22. The pusher lifting / lowering means 106 includes an arm 107 provided on the upper surface of the moving block 104 (see FIG. 3), an L-shaped lever 108 whose corners are rotatably supported at the tip of the arm 107, and its L A cylinder device (specifically, an air cylinder) 109 connected to one end of the L-shaped lever 108 is provided, and a notch workpiece pusher 101 is fixed to the upper surface of the other end of the L-shaped lever 108. In the present embodiment, L-shaped levers 108 to which the notch work pusher 101 is fixed are provided on both sides in the lateral direction (the front and back of the paper in FIG. 7) with the arm 107 interposed therebetween.

  When the air cylinder 109 is extended, the other end side of the L-shaped lever 108 becomes substantially parallel to the upper surface of the main table 2, and the notched work pusher 101 protrudes upward from the upper surface of the main table 2. On the other hand, when the air cylinder 109 is retracted, the other end portion of the L-shaped lever 108 rotates downward about the corner portion, and the notch work pusher 101 is retracted below the main table 2.

  The pusher lifting / lowering means 106 can move the notched work pusher 101 in the lateral direction. That is, after the notch work pusher 101 is retracted below the outer main table 22, the notch work pusher 101 is moved in the lateral direction in the retracted state, so that the notch work pusher 101 is moved to the outer main table 22. Move in the horizontal direction without interfering with. As a result, the degree of freedom in arranging the notched workpiece pushers 101 in the lateral direction is increased, and general-purpose positioning is possible even for workpieces having different shapes and sizes.

  The notched workpiece pusher 101 is in contact with the side of the opposing workpiece and presses the workpiece W, a housing 161 that movably houses the pressing member 160, and a pressing member provided in the housing 161. And a coil spring 162 that serves as a biasing unit that biases the workpiece W in the pressing direction with a predetermined pressing force via 160. The coil spring 162 has one end fixed to the housing 161 and the other end fixed to the pressing member 160. The coil spring 162 can absorb variations in workpiece length. That is, when the notched workpiece pusher 101 is positioned at a predetermined position to position the workpiece W, if the workpiece is less than the predetermined length, the coil spring 162 expands, and if it exceeds the predetermined length, the coil spring 162 is expanded. Degenerates and absorbs workpiece variations.

The pressing member 160 of the notched workpiece pusher 101 includes a slide portion 164 that is movably stored in the housing 161 and a roller portion that is supported by the slide portion 164 so as to be rotatable in the horizontal direction. The roller portion includes, for example, a radial ball bearing 165 having an inner ring portion fixed to a vertical shaft provided on the slide portion 164, and an outer ring portion of the radial ball bearing 165 is in contact with the work so as to be rotatable.

  Returning to FIG. 2, the main table 2 is provided with a notched work side guide 11 having a notched work side pusher 111 disposed in the gap G1 and the gap G3 (lateral opening) and protruding from the upper surface of the main table 2 (see FIG. 2). 2 shows only the pusher 111). At least a pair of notch work side guides 11 (two pairs arranged in the vertical direction in the figure) are provided, and each pair of notch work side guides 11 is arranged with the notch work side pushers 111, 111 facing each other in the lateral direction. Is done.

  The notch work side guide 11 has a schematic structure similar to that of the notch work guide 10 and is arranged in the horizontal direction. That is, the notch work side guide 11 includes notch work side pusher moving means (not shown) for moving the notch work side pusher 111 in the lateral direction. By moving the notched work side pusher 111 against the work placed on the main table 2 by the notched work side pusher moving means, the work moves in the horizontal direction. Further, in the notched work side guide 11, the pusher lifting / lowering means and the slider device are omitted.

  As shown in FIGS. 8 and 9, the notch work side pusher 111 has the same schematic structure as the notch work pusher 101, but the structure of the pressing member is different. In the present embodiment, the biasing means of the notched work side pusher 111 is omitted in one of the pair of notched work side guides 11 and 11.

  As shown in FIG. 8, in one notch work side pusher 111, the pressing member 160 includes a pressing block 170 in which a contact surface with the workpiece W is formed in a flat shape. As shown in FIG. 9, in the other notched work side pusher 111, the urging means for urging the work W with a predetermined pressing force is omitted, and the pressing block 170 constituting the pressing member 160 is fixed to the housing 161. .

  Returning to FIG. 2, each subtable 3 is provided with a joint work guide 12 having a joint pusher 121 disposed between the bars 34 (vertical opening) and protruding from the upper surface of the subtable 3 (in FIG. 2). , Only the pusher 121 is shown). The joint work guide 12 of this embodiment has two joint work pushers 121 adjacent to each other, and the two joint work guides 12 are provided side by side on the sub-table 3 in the horizontal direction. As shown in FIG. 3, each joint work guide 12 has the same general structure as the notch work guide 10, and includes joint work pusher moving means 122 and pusher lifting / lowering means 126. The joint work pusher 121 has a schematic structure similar to that of the notch work pusher 101 and includes a pressing member having a slide portion and a roller portion.

  Each sub-table 3 has a joint work side guide (only the pusher 131 is shown) having a joint work-side pusher 131 that is disposed in the gap G4 and the gap G6 (lateral opening) and protrudes from the upper surface of the subtable 3. ) Is provided. Each joint work side guide has a schematic structure similar to that of the notched work side guide 11, and includes joint work side pusher moving means (not shown) for moving the joint work side pusher 131 in the lateral direction. Each joint work side pusher 131 has a schematic structure similar to that of the notched work side pusher 111 shown in FIG. 8, and includes a biasing means for biasing the work W with a predetermined pressing force.

  The arrangement and number of the joint work pushers 121 and the joint work side pushers 131 are set in accordance with the work (for example, the joint work 310 described above) arranged on the sub-table 3.

  As shown in FIG. 10, the main table 2 is provided with notched workpiece holding means 14 that holds the workpiece by pressing the upper surface of the workpiece arranged on the main table 2.

  The notched workpiece holding means 14 includes a holding beam 140 provided on the main table 2 and a plurality of workpiece pressing units 141 provided along the holding beam 140 to press the upper surface of the workpiece. The holding beam 140 extends laterally along the reference horizontal side 2a (see FIG. 2) of the main table 2 and is supported from below at both ends thereof.

  As shown in FIG. 11 to FIG. 13, the work pressing unit 141 includes a lifting member 142 that can be moved up and down on the holding beam 140, a plurality of workpiece pressing blocks 143 that are provided on the lower surface of the lifting member 142, and a lifting and lowering member 142. And an elevating cylinder device (specifically, an air cylinder with a guide) 144 serving as elevating means for elevating the member 142.

  The elevating cylinder device 144 has a piston 144a that can move forward and backward in the vertical direction (up and down in FIG. 12), and a plate-like elevating member 142 that extends in the horizontal direction (left and right in FIG. 12) is connected to the tip of the piston 144a. Is done. A plurality (three in the illustrated example) of work holding blocks 143 are attached to the lower surface of the elevating member 142 via elastic members (specifically, disc springs) 145.

  When the piston 144a of the elevating cylinder device 144 is extended, the elevating member 142 is lowered, and the plurality of work pressing blocks 143 press the work W arranged on the main table 2. The pressing force to the workpiece W is adjusted by the extension amount of the piston 144a and the spring constant of the disc spring 145, respectively. More specifically, the extension amount of each piston 144a and each disc spring are adjusted so that the pressing force of the work pressing block 143 is corrected by correcting the change of the pressing force of the work pressing block 143 due to the bending of the holding beam 140. Each of the 45 spring constants is set.

Returning to FIG. 10, each sub-table 3 is provided with joint work holding means 15 that presses the upper surface of the work arranged on the sub-table 3 and holds the work. The joint work holding means 15 has the same general structure as the notched work holding means 14. In the next work holding means 15, a plurality of workpiece holding unit 141 is provided in the holding beam 151 extending along the reference horizontal side 3a and the reference vertical side 3b of the sub-table 3 (see FIG. 2), they work holding unit 141 Are arranged in an L shape in plan view.

  Furthermore, the workpiece positioning device 1 includes control means (not shown) for controlling the reference pins 73, 83, 93, the pushers 101, 111, 121, 131, the workpiece holding means 14, 15 and the like. . In the control means, position information of the pushers 101, 111, 121, 131 for positioning each work is stored in advance. Based on the position information, the pushers 101, 111, 121, 131 are controlled by the NC. Driven.

  As shown in FIG. 5, the welding apparatus 212 includes a welding head 220, and the welding head 220 is moved in the vertical direction by the head moving means 221 (specifically, a gantry apparatus) shown in FIG. 1. Moved horizontally. For example, the welding head 220 irradiates a laser or plasma as a welding heat source, and is provided with an injection nozzle (not shown) for injecting a shielding gas to a welding site. Further, a back plate member 222 for retaining the shield gas is provided between the main table 2 and the sub tables 3 and 3 and between the sub tables 3 and 3. As shown in FIG. 6, the back plate member 222 has a T-shape as a whole.

  Next, a positioning method using the workpiece positioning device 1 of the present embodiment will be described based on FIGS.

  First, as shown in FIG. 15, the notched workpiece 300 and the joint workpiece 310 are arranged in the tables 2 and 3. Specifically, the notched workpiece 300 is arranged on the main table 2 in a state where the main table 2 and the pair of sub tables 3 and 3 are separated from each other, and one sub table 3 (the sub table 3 on the left side in FIG. 15). ), The joint work 310 is arranged. In the present embodiment, the notched workpiece 300 is disposed such that the longitudinal inner weld side 300b is positioned between the pair of sub-tables 3 and 3. As described above, the joint workpiece 310 is positioned at a predetermined interval with respect to the notch portion 301 of the notch workpiece 300.

  In the present embodiment, before placing the notched workpiece 300 on the main table 2, the notched workpiece pusher 101 and the notched workpiece side pusher 111 are positioned in advance at a predetermined initial position. Specifically, the notch work pusher 101 and the notch work piece 101 are located so that the notch work 300 is positioned between the notch work pusher 101 and the notch work reference pin 73 and between the pair of left and right notch work side pushers 111. The work side pusher 111 is moved in advance. As for the notch workpiece reference pin 73, the notch workpiece reference pin 73 located on the sub-table 3 side on which the joint workpiece 310 is arranged is projected upward from the upper surface of the main table 2 and on the other sub-table 3 side. The notched workpiece reference pin 73 that has been positioned is retracted below the main table 2.

  Similarly to the main table 2 side, on the sub-table 3 side, the joint work pusher 121 and the joint work side pusher 131 are positioned in a predetermined initial position before the joint work 310 is arranged on the sub-table 3. . Specifically, the joint work 310 is located between the joint work pusher 121 and the joint work reference pin 83 and between the joint work side pusher 131 and the joint work side reference pin 93. The pusher 121 and the joint work side pusher 131 are moved in advance. Further, the joint work reference pin 83 and the joint work side reference pin 93 of the sub-table 3 on which the joint work 310 is arranged are respectively projected in advance upward from the upper surface of the sub-table 3 and the joint work of the other sub-table 3 is provided. The reference pin 83 and the joint work side reference pin 93 are retracted downward.

  Next, as shown in FIG. 16, the notch workpiece 300 and the joint workpiece 310 are positioned in the vertical direction. Specifically, the notched workpiece pusher 101 of the main table 2 moves the notched workpiece 300 toward the notched workpiece reference pin 73 until the laterally inner welded side portion 300 a of the notched workpiece 300 abuts against the notched workpiece reference pin 73. .

  Further, the joint workpiece 310 is moved toward the joint workpiece reference pin 83 by the joint workpiece pusher 121 of the sub-table 3 until the lateral outer side welded side 310 a of the joint workpiece 310 abuts against the joint workpiece reference pin 83.

  Next, as shown in FIG. 17, the notched workpiece 300 and the joint workpiece 310 are positioned in the lateral direction. Specifically, the notched workpiece 300 is moved in the lateral direction so that the longitudinally inner welded side portion 300b of the notched workpiece 300 is positioned between the pair of sub-tables 3 and 3 by the notched workpiece side pusher 111 of the main table 2. Move. More specifically, the longitudinal inner weld side 300b of the notch workpiece 300 is aligned with the movement path of the welding head 220 (see FIG. 5) set between the pair of sub-tables 3 and 3. At this time, the notch workpiece 300 is moved in a state where the laterally inner welded side portion 300 a is abutted against the notch workpiece reference pin 73. That is, the notch workpiece 300 is held between the notch workpiece pusher 101 and the notch workpiece reference pin 73.

  Further, the joint work 310 is moved toward the joint work side reference pin 93 by the joint work side pusher 131 of the sub-table 3 until the longitudinal outer weld side 310b of the joint work 310 abuts against the joint work side reference pin 93. . At this time, the joint work 310 is moved in a state where the laterally outer welded side portion 310 a is abutted against the joint work reference pin 83. That is, the joint work 310 is performed while being sandwiched between the joint work pusher 121 and the joint work reference pin 83.

  Thus, the notched workpiece 300 is positioned with respect to the main table 2 and the joint workpiece 310 is positioned with respect to the sub-table 3. In the present embodiment, the notched workpiece 300 is positioned such that the laterally inner welded side 300a protrudes from the reference lateral side 2a of the main table 2. Similarly, the joint work 310 has a laterally outer welded side 310a projecting from the reference lateral side 3a of the subtable 3 and a longitudinally outer welded side 310b projecting from the reference longitudinal side 3b of the subtable 3. Positioned.

  Next, as shown in FIG. 18, the entire lateral direction of the notch workpiece 300 positioned with respect to the main table 2 is pressed by the notch workpiece holding means 14 in the vicinity of the inner weld side portion 300 a to (The holding part is indicated by halftone in the figure). Further, the joint work 310 positioned with respect to the sub-table 3 is pressed by the joint work holding means 15 and held on the sub-table 3 in the vicinity of the lateral outer weld side 310a and the longitudinal outer weld side 310b. .

  Next, as shown in FIG. 19, the notch workpiece reference pin 73 is retracted below the main table 2, and the joint workpiece reference pin 83 and the joint workpiece side reference pin 93 are retracted below the sub table 3. Further, the notch work pusher 101 and the notch work side pusher 111 of the main table 2 are moved away from the notch work 300. Similarly, the joint work pusher 121 and the joint work side pusher 131 of the sub-table 3 are moved away from the joint work 310. In the present embodiment, in preparation for the next workpiece positioning, the pushers 101, 111, 121, 131 are moved to the initial positions at the time of workpiece placement described with reference to FIG.

  Next, as shown in FIG. 20, the notched workpiece 300 and the joint workpiece 310 are brought into contact with each other. Specifically, the longitudinal inner weld side 300b of the notch workpiece 300 and the longitudinal outer side of the joint 310 so that the lateral inner weld side 300a of the notch workpiece 300 and the lateral outer weld side 310a of the joint workpiece 310 abut each other. The main table 2 that holds the notched workpiece 300 is moved in the vertical direction (lower in FIG. 20) and the sub-table 3 that holds the joint workpiece 310 is moved in the vertical and horizontal directions (upper right in FIG. 20) so that the weld side 310b abuts. To do. In the present embodiment, the distance between the main table 2 and the sub-table 3 on which the joint work 310 is disposed, and the distance between the sub-table 3 on which the joint work 310 is disposed and the other sub-table 3 are desired for welding. The main table 2 and the sub-table 3 on which the joint work 310 is arranged are moved so as to be the interval (specifically, the interval at which the above-described shield gas stays).

  Thus, the notched workpiece 300 and the joint workpiece 310 are positioned, and an L-shaped weld line is formed at the butt portion of the workpieces. At this time, the notched workpiece 300 has the main plate portion 304 placed on the main table 2 and the convex plate portion 305 placed on the sub-table 3 on which the joint workpiece 310 is not placed (the sub-table 3 on the right side in FIG. 20). Is done.

  Further, after positioning the notched workpiece 300 and the joint workpiece 310, as shown in FIG. 21, the joint work holding means 15 of the sub-table 3 on which the joint workpiece 310 is not placed is used to prevent deformation during welding. The convex plate part 305 of the notch workpiece 300 is held on the sub-table 3. Thereafter, the welding head 220 is moved along the L-shaped weld line in the state in which the vicinity of the abutting portion (the vicinity of the weld line) between the cut workpiece 300 and the joint workpiece 310 is held, and the cut workpiece 300 and the joint workpiece 310 are joined. Butt welding with the workpiece 310 is performed.

  As described above, the workpiece positioning apparatus 1 according to the present embodiment positions the reference pins 73, 83, and 93 so as to form a substantially right angle (L-shaped), thereby positioning the workpiece with respect to the L-shaped welding line. It can be performed.

  Further, each reference pin 73, 83, 93 is configured to be able to protrude upward from the upper surface of each table 2, 3 and to be retracted below each table 2, 3 for positioning with respect to the L-shaped weld line. In addition, the workpiece can be positioned with respect to the linear weld line. That is, when the weld line is linear, the joint work side reference pin 83 is retracted and a pair of sub-tables 3 and 3 are connected to form a table having the same structure as the main table. Use to position the workpiece. Specifically, when using the workpiece positioning device 1 of the present embodiment to join and weld flat plate workpieces having linear weld sides, the pair of sub-tables 3 and 3 are connected to the left and right. After the connected sub-tables 3 and 3 and the main table 2 are arranged to face each other, one of the flat workpieces is arranged on the main table 2 and the other is arranged on the connected sub-tables 3 and 3, respectively. Then, the one flat plate arranged on the main table 2 is positioned with respect to the main table 2 so that the weld sides of the flat plate workpieces are opposed to each other with a gap therebetween, and the sub-tables 3 and 3 The other flat work placed on the other side is positioned relative to the sub-tables 3, 3, and then the weld side of the one flat work and the other flat work are As is the weld side of the click butted, to move the said main table 2 and the sub-table 3,3, thereby positioning the flat plate workpiece.

  In addition, by providing a reference pin and a pusher on the main table 2 and the sub table 3, respectively, the work can be positioned on each table simultaneously on the main table 2 side and the sub table 3 side. Can be done quickly.

  Further, both the main table 2 holding the notched workpiece 300 and the sub-table 3 holding the joint workpiece 310 are moved in the vertical direction to position the workpiece, and one of them is fixed with the table fixed. Compared with the case where it does, positioning can be performed rapidly.

  Further, by dividing the table on which the work is placed, each reference pin can be retracted below the work table, and adhesion of welding debris to the reference pin can be prevented.

  In addition, when each work is changed between an L-shaped weld line work and a straight weld line work by NC driving each pusher using a servo motor, It is possible to quickly perform setup change work such as changing the initial position.

  In addition, this invention is not limited to the above-mentioned embodiment, Various modifications and application examples can be considered.

  For example, in the present embodiment, when the inner lateral welded side portion of the notched workpiece and the outer lateral welded side portion of the joint work are brought into contact with each other, both the main table and the sub-table holding the joint workpiece are arranged in the vertical direction. However, the present invention is not limited to this, and only the main table or the sub table may be moved in the vertical direction.

  Further, in the above-described embodiment, as shown in FIG. 14A, the workpiece positioning is performed when the notch portion of the notched workpiece is opened to the left side and the joint workpiece is positioned on the left side of the notched workpiece. For example, as shown in FIG. 14B, positioning can be performed even on a workpiece whose shape is reversed from the left to the right as described above. In that case, the right and left may be reversed with respect to the above-described embodiment, and the joint work may be positioned on the sub-table 3 on the right side in FIG.

It is the schematic of the butt welding apparatus to which the workpiece | work positioning device by one Embodiment which concerns on this invention is applied. It is a top view of the workpiece positioning device of this embodiment. It is the III-III arrow line view of FIG. It is IV detail drawing of FIG. In FIG. 4, it is a figure which shows the state which the reference | standard pin evacuated. It is a top view of the reference | standard apparatus of this embodiment. FIG. 4 is a detailed view of VII in FIG. It is a side view of the notch work side pusher of this embodiment. It is a side view of the notch work side pusher of this embodiment. It is a top view of the work holding means of this embodiment. It is XI detailed drawing of FIG. It is a XII-XII arrow line view of FIG. It is a XIII-XIII arrow line view of FIG. (A) is a top view of the notch workpiece and joint work of this embodiment, (b) is a top view of the notch work and joint work of other embodiment. It is a figure for demonstrating the workpiece | work positioning method of this embodiment. It is a figure for demonstrating the workpiece | work positioning method of this embodiment. It is a figure for demonstrating the workpiece | work positioning method of this embodiment. It is a figure for demonstrating the workpiece | work positioning method of this embodiment. It is a figure for demonstrating the workpiece | work positioning method of this embodiment. It is a figure for demonstrating the workpiece | work positioning method of this embodiment. It is a figure for demonstrating the workpiece | work positioning method of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Work positioning device 2 Main table 3 Sub table 4 Main table moving means 5 Sub table moving means 7 Notch workpiece reference device 8 Joint workpiece reference device 9 Joint workpiece side reference device 10 Notched workpiece guide 11 Notched workpiece side guide 12 Joint workpiece guide 13 Joint workpiece side guide 14 Notched workpiece holding means 15 Joint workpiece holding means 71 Notched workpiece reference member 81 Joint workpiece reference member 91 Joint workpiece side reference member 101 Notched workpiece pusher 111 Notched workpiece side pusher 121 Joint workpiece pusher 131 Joint workpiece side Pusher 300 Notched workpiece 300a Horizontal inner weld side 300b Vertical inner weld side 301 Notch 310 Joint workpiece 310a Lateral outer weld side 310b Vertical outer weld side

Claims (26)

It consists of a main plate part and a convex plate part, and has a notch part at right angles, and the notch part is a laterally inner welded side part of the main plate part and a longitudinally inner welded side part of the convex plate part integrally extended from the main plate part. And a joint workpiece having a laterally outer welded side that is abutted against the laterally inner welded side of the notched workpiece and a longitudinally outer welded side that is butted against the longitudinally inner welded side. , A method of positioning these workpieces when they are butted and welded,
The table on which the work is arranged is composed of a main table that holds the main plate part and a pair of sub-tables that hold the convex plate part or the joint work, and the main table is provided to be movable in the vertical direction on a horizontal plane. The pair of sub-tables are arranged so as to be arranged side by side along the reference horizontal side of the main table perpendicular to the vertical direction, and are configured to be movable in the vertical and horizontal directions.
The positioning of the workpiece is
(A) The notch work is placed on the main table and the joint work is placed on either the left or right sub-table so that the joint work is positioned at a predetermined interval with respect to the notch portion of the notch work. Each placing step;
(B) A notch workpiece reference member for positioning the laterally inner welded side portion of the notched workpiece on the reference lateral side of the main table from the upper surface of the main table along the reference lateral side of the main table. Projecting upward, and
(C) the lateral inner welding side portions of the main table arranged notches workpiece, placing the projecting plate portion of Rutotomoni the notch workpiece abutting to the cut-out workpiece reference member to the other sub-table, and the notch work Aligning the position of the notch workpiece in the lateral direction so that the vertically inner welded side portion is located between the pair of sub-tables, thereby positioning the notch workpiece with respect to the main table;
(D) holding the notched workpiece positioned with respect to the main table on the main table;
(E) A joint work reference member for positioning the lateral outer side welded side portion of the joint work on the reference lateral side of the one sub-table facing the main table, along the reference lateral side of the sub-table. And a joint work side reference member for projecting upward from the upper surface of the sub table and positioning the longitudinal outer side of the joint work on the reference vertical side of the one sub table facing the other sub table. Projecting upward from the upper surface of the sub-table along the reference vertical side of the sub-table;
(F) The laterally outer welded side of the joint work arranged on the one sub-table is butted against the jointwork reference member, and the longitudinally outer welded side of the jointwork is butted against the jointwork side reference member Positioning the joint workpiece with respect to the one sub-table;
(G) holding the joint work positioned with respect to the sub-table in the sub-table;
(H) The notch work reference member of the main table is retracted below the main table, and the joint work reference member and the joint work side reference member of the sub table holding the joint work are retracted below the sub table. Step to
(I) One of a main table that holds the notched workpiece and a sub-table that holds the joint workpiece so that the laterally inner welded side portion of the notched workpiece and the laterally outer welded side portion of the joint workpiece abut each other. Move one or both of them in the vertical direction and move the sub-table holding the joint work in the horizontal direction so that the longitudinal inner welded side of the notched work and the longitudinal outer welded side of the joint work meet. Thus, the step of positioning the notch workpiece and the joint workpiece,
(J) holding the notch work convex plate part on the sub table on which the convex plate part of the notch work is placed on the sub table;
A workpiece positioning method characterized by comprising:   The notched workpiece is composed of a main plate portion having the lateral inner weld side portion and a convex plate portion extending integrally from the main plate portion and having the vertical inner weld side portion. In the step (a), the notch The workpiece positioning method according to claim 1, wherein when the workpiece is arranged on the main table, the longitudinal inner weld side of the convex plate portion is arranged between a pair of sub-tables. In step (b) above,
The notch workpiece reference member includes a plurality of notch workpiece reference pins, and the plurality of notch workpiece reference pins extend along the reference lateral side of the main table and are provided so as to be freely raised and lowered. The notch work reference pin drive means is connected to the notch work reference pin support plate,
The notch workpiece reference pin driving means rotates the notch workpiece reference pin support plate so as to stand up horizontally from the prone state, thereby the notch workpiece reference pin provided on the notch workpiece reference pin support plate. The workpiece positioning method according to claim 1, wherein the workpiece projects upward from the upper surface of the main table along the reference lateral side of the main table. In step (b) above,
The notch workpiece reference member is provided on the reference lateral side of the main table so as to be opposed to the pair of sub-tables.
The pair of left and right cutout workpiece reference members is a cutout workpiece reference member located on the other subtable side, with the cutout workpiece reference member located on the subtable side on which the joint workpiece is disposed protruding upward from the upper surface of the main table. The workpiece positioning method according to claim 1, wherein the workpiece is retracted below the main table.   In the step (c), the laterally inner welded side portion of the notched workpiece is first butted against the notched workpiece reference member, and then the longitudinally inner welded side portion of the notched workpiece is brought into contact with the pair of notches. The work positioning method according to claim 1, wherein the work positioning is performed between the sub-tables. In the step (c), the notch workpiece is abutted against the notch workpiece reference member by moving the notch workpiece pusher protruding from the upper surface of the main table in the vertical direction while pressing the notch workpiece against the notch workpiece. This is done by moving the laterally inner welded side of the notched workpiece toward the notched workpiece reference member,
The lateral alignment of the notched workpiece is performed by moving at least a pair of notched workpiece side pushers protruding from the upper surface of the main table on both lateral sides of the notched workpiece to the predetermined positions in the lateral direction. The workpiece positioning method according to claim 1, wherein the workpiece positioning method is performed by positioning a longitudinal inner weld side of the workpiece between the pair of sub-tables.   The workpiece positioning method according to claim 1, wherein the step (d) presses the entire lateral direction of the notched workpiece in the vicinity of the inner side of the notched workpiece to hold the notched workpiece on the main table. In step (e) above,
The joint workpiece reference member is composed of a plurality of joint workpiece reference pins, and the plurality of joint workpiece reference pins extend along the reference lateral side of the sub-table on which the joint workpiece is arranged and are provided so as to be freely raised and lowered. It is attached to the joint workpiece reference pin support plate with an interval, and the joint workpiece reference pin driving means is connected to the joint workpiece reference pin support plate,
The joint workpiece reference pin driving means rotates the joint workpiece reference pin support plate so as to stand up horizontally from the prone state, whereby the joint workpiece reference pin provided on the joint workpiece reference pin support plate. Protrudes upward from the upper surface of the sub-table along the reference lateral side of the sub-table,
The joint workpiece side reference member is composed of a plurality of joint workpiece side reference pins, and the plurality of joint workpiece side reference pins extend along the reference vertical side of the sub-table on which the joint workpiece is arranged and can be raised and lowered freely. It is attached to the provided joint work side reference pin support plate with an interval, and the joint work side reference pin driving means is connected to the joint work side reference pin support plate,
The joint work side reference pin driving means rotates the joint work side reference pin support plate so as to stand up horizontally from the lying state, and thereby the joint work side reference pin support plate is provided with the joint piece. The work positioning method according to claim 1, wherein the work side reference pin protrudes upward from the upper surface of the sub table along the reference vertical side of the sub table.   In the step (f), the lateral outer welded side of the joint work is first butted against the joint workpiece reference member, and then the longitudinal outer welded side of the joint is joined to the joint workpiece side in the abutted state. The workpiece positioning method according to claim 1, wherein the workpiece positioning method abuts on a reference member. In the step (f), the joining of the joining work to the joining work reference member is performed in the vertical direction while pressing the joining work pusher protruding from the upper surface of the sub-table on which the joining work is placed against the joining work. Is performed by moving the lateral outer side weld side of the joint work toward the joint work reference member,
The joining of the joint work to the joint work side reference member is performed by moving the joint work side pusher projecting from the upper surface of the sub-table on which the joint work is disposed in a lateral direction while pressing against the joint work, The workpiece positioning method according to claim 1, wherein the workpiece positioning method is performed by moving a longitudinal outer side of the joint workpiece toward the joint workpiece side reference member.   The workpiece positioning according to claim 1, wherein the step (g) presses the joint work in the vicinity of the laterally outer welded side and the longitudinally outer welded side to hold the jointed work on the sub-table. Method.   The workpiece according to claim 3, wherein in step (h), the notch workpiece reference pin is retracted by rotating the notch workpiece reference pin support plate downward from the horizontal state by the notch workpiece reference pin driving means. Positioning method. In step (h) above,
Retraction of the joint workpiece reference pin is performed by rotating the joint workpiece reference pin support plate downward from the horizontal state by the joint workpiece reference pin driving means,
The work positioning method according to claim 8, wherein the retraction of the joint work side reference pin is performed by rotating the joint work side reference pin support plate downward from a horizontal state by the joint work side reference pin driving means.   In the step (c), the notched workpiece is positioned with respect to the main table such that the lateral inner weld side protrudes from the reference lateral side of the main table. In the step (f), The joint work has a lateral outer weld side protruding from the reference lateral side of the sub-table, and a longitudinal outer weld side of the joint work protruding from the reference vertical side of the sub-table. The work positioning method according to claim 1, wherein the work positioning is performed with respect to the sub-table. In step (i) above,
The distance between the main table in which the notched work is arranged and the sub table in which the joint work is arranged, and the distance between the sub table in which the joint work is arranged and the other sub table are set to a desired value for welding. The work positioning method according to claim 14, wherein the notched work and the joint work are positioned so as to have an interval. It consists of a main plate part and a convex plate part, and has a notch part at right angles, and the notch part is a laterally inner welded side part of the main plate part and a longitudinally inner welded side part of the convex plate part integrally extended from the main plate part. And a joint workpiece having a laterally outer welded side that is abutted against the laterally inner welded side of the notched workpiece and a longitudinally outer welded side that is butted against the longitudinally inner welded side. , A device for positioning these workpieces when they are butted and welded,
A main table on which the cutout work is arranged;
A main table moving means for moving the main table in a vertical direction on a horizontal plane;
A pair that is arranged so as to be arranged side by side along the reference horizontal side of the main table orthogonal to the vertical direction, the joint work is arranged on either the left or right side, and the convex plate portion of the notched work is placed on the other side. Subtables of
Sub-table moving means for moving the sub-table on which the joint work is arranged vertically and horizontally;
It has a notch work reference member for positioning the laterally inner welded side of the notch work to the reference lateral side of the main table, and the notch work reference member is arranged along the reference lateral side of the main table. A notch workpiece reference device that protrudes upward from the upper surface of the main table;
There is a notch work pusher protruding from the upper surface of the main table, and the notch work pusher is moved in the vertical direction while being pressed against the notch work arranged on the main table, and the inside welding of the notch work is performed. A notch work guide for moving the side toward the notch work reference member,
It has at least a pair of notch work side pushers protruding from the upper surface of the main table, and moves the notch work side pushers laterally to a predetermined position while pressing each of the notch work side pushers against the lateral sides of the notch work. , A notch work side guide for positioning the longitudinal inner weld side of the notch work between the pair of sub-tables,
A notch workpiece holding means for pressing the upper surface of the notch workpiece arranged on the main table and holding the notch workpiece on the main table;
It has a joint work reference member for positioning the lateral outer side welded side part of the joint work on the reference lateral side facing the main table of the sub-table on which the joint work is arranged, the joint work reference member, A joint work reference device that protrudes upward from the upper surface of the sub-table along the reference lateral side of the sub-table in which the joint work is arranged,
A joint work side reference member for positioning the longitudinal outer welded side of the joint work on a reference vertical side facing the other sub-table of the sub-table on which the joint work is disposed, and the joint work side reference A joint work side reference device that protrudes upward from the upper surface of the sub table along the reference vertical side of the sub table in which the joint work is disposed,
It has a joint work pusher protruding from the upper surface of the sub-table on which the joint work is arranged, and the joint work pusher is moved in the vertical direction while pressing the joint work against the joint work. A joint work guide for moving the side portion toward the joint work reference member,
It has a joint work side pusher protruding from the upper surface of the sub-table on which the joint work is arranged, and the joint work side pusher is moved in the lateral direction while being pressed against the joint work, thereby A joint work side guide that moves the outer weld side toward the joint work side reference member,
A joint work holding means for pressing the upper surface of the joint work arranged on the sub table and holding the joint work on the sub table;
Joint work holding means for holding the notched workpiece convex plate portion on the other sub-table on which the notched workpiece convex plate portion is placed on the sub table;
A workpiece positioning device characterized by comprising:   The workpiece positioning device according to claim 16, wherein a vertical opening for moving the notched workpiece pusher and a horizontal opening for moving the notched workpiece side pusher are formed in the main table.   The vertical opening for moving the joint work pusher and the lateral opening for moving the joint work side pusher are formed in the sub-table on which the joint work is arranged. Work positioning device.   The notch workpiece reference device is attached to the notch workpiece reference pin support plate that extends along the reference lateral side of the main table so as to be freely raised and lowered, and is spaced along the notch workpiece reference pin support plate. 17. A plurality of notch workpiece reference pins forming the notch workpiece reference member, and a notch workpiece reference pin driving means connected to the notch workpiece reference pin support plate and rotating the notch workpiece reference pin support plate. The workpiece positioning device described.   The workpiece positioning device according to claim 16, wherein the notch workpiece reference member is provided on the reference lateral side of the main table so as to face the pair of sub tables. The notch work pusher, the notch work side pusher, the joint work pusher, and the joint work side pusher are in contact with a side part of an opposing work and press the work, and the press member 17. The workpiece positioning device according to claim 16, further comprising a housing that is movably accommodated, and biasing means that is provided in the housing and biases the workpiece with a predetermined pressing force in the pressing direction via the pressing member.   The pressing member of the notch work pusher and the joint work pusher has a slide portion movably accommodated in the housing, and a roller portion supported by the slide portion so as to be rotatable in the horizontal direction. Item 21. A workpiece positioning apparatus according to Item 21. The notch work holding means and the joint work holding means include a holding beam provided along the reference horizontal side and the reference vertical side of each table, an elevating member provided so as to be movable up and down on the holding beam, and the elevating and lowering thereof. A plurality of work pressing blocks provided on the lower surface of the member, and lifting means for lifting and lowering the lifting member,
The workpiece positioning apparatus according to claim 16, wherein the lifting member is lowered by the lifting means, and the plurality of workpiece pressing blocks press the workpieces arranged on each table.   The joint workpiece reference device includes a joint workpiece reference pin support plate that extends along the reference lateral side of the sub-table on which the joint workpiece is disposed and is provided so as to be freely raised and lowered, and along the joint workpiece reference pin support plate. A plurality of joint workpiece reference pins which are attached at intervals to form the joint workpiece reference member; and a joint workpiece reference pin driving means connected to the joint workpiece reference pin support plate for rotating the joint workpiece reference pin support plate; 17. A workpiece positioning apparatus according to claim 16, further comprising:   The joint work side reference device includes a joint work side reference pin support plate that extends along the reference vertical side of the sub-table on which the joint work is arranged, and that can be raised and lowered, and the joint work side reference pin support plate. A plurality of joint work side reference pins that are attached at intervals along the joint side to form the joint work side reference member, and connected to the joint work side reference pin support plate for rotating the joint work side reference pin support plate The work positioning apparatus according to claim 16, further comprising a joint work side reference pin driving means. When using the workpiece positioning device according to claim 16 to weld flat plate workpieces having linear weld sides,
After connecting the pair of sub-tables to the left and right, and arranging the connected sub-tables and the main table facing each other,
Place one of the flat work on the main table, the other on the connected sub-table,
The one flat plate disposed on the main table is positioned with respect to the main table so that the welded side portions of the flat plate workpieces are opposed to each other with a gap, and the other flat plate is disposed on the sub table. Positioning the flat work relative to the sub-table;
Thereafter, the main table and the sub table are moved so that the welded side of the one flat plate work and the welded side of the other flat plate work are brought into contact with each other, thereby positioning the flat work. A workpiece positioning device.

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