JP2014000601A - Wire molding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire molding machine capable of easily performing position control of a molding tool.SOLUTION: A wire molding machine comprises: a first rotary base 30 rotatably supported around a first rotary shaft J1 coaxial or parallel with a wire feeding direction by a support base 23; and a second rotary base 40 rotatably supported around a second rotary shaft J2 orthogonal to the first rotary shaft J1 by the first rotary base 30. A molding tool T is fixed to the second rotary base 40. A first servo motor 50 rotationally driving the first rotary base 30 is fixed to the support base 23 while a second servo motor 60 rotationally driving the second rotary base 40 is fixed to the first rotary base 30.

Description

  The present invention relates to a wire rod forming machine capable of rotationally driving a molding tool that abuts against a wire rod around a first rotation axis that is coaxial or parallel to the wire feed direction and a second rotation axis that is orthogonal to the first rotation axis. .

  Conventionally, as this type of wire rod forming machine, a rotation base supported rotatably around a first rotation axis by a support base, and a turntable supported rotatably around a second rotation axis by the rotation base, There is known one in which a molding tool is fixed to the rotary table. In this wire rod forming machine, a base drive servo motor for rotating the rotary base and a table drive servo motor for rotating the rotary table are both fixed to the support base and molded by these servo motors. The tool is configured to rotate around the first rotation axis and around the second rotation axis (see, for example, Patent Document 1).

JP-A-10-76340 ([0022] to [0025], FIG. 6)

  However, in the conventional wire rod forming machine described above, when the rotation base is rotated around the first rotation axis by the tool driving servo motor, the rotation of the rotation base is rotated even though the table driving servo motor is stopped. Along with this, there is a problem that so-called rotation occurs in which the rotary table rotates around the second rotation axis. For this reason, when the rotating base is rotated, the rotational position of the forming tool must be controlled in consideration of the accompanying effect, and the position control of the forming tool is complicated.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a wire rod forming machine capable of easily controlling the position of a forming tool.

  In order to achieve the above object, a wire rod forming machine according to the invention of claim 1 is configured such that a forming tool which is an abutting partner of a wire rod fed along the wire rod feeding direction is parallel to the wire rod feeding direction or A tool drive mechanism for rotationally driving to an arbitrary rotational position around a coaxial first rotational axis and a second rotational axis orthogonal to the first rotational axis is rotatable about the first rotational axis by a support base A first rotation base supported and rotated by a first servo motor; and a second rotation base supported by the first rotation base so as to be rotatable about a second rotation axis and driven by a second servo motor. In a wire rod forming machine having a molding tool fixed to the second rotation base, the first servo motor is fixed to the support base, while the second servo motor is fixed to the first rotation base. Have.

  The invention of claim 2 is a wire rod forming machine according to claim 1, wherein the wire rod forming machine is provided at a rear end portion of the first rotation base away from the wire feed source, and is a circle having the first rotation axis as a central axis. A cable support shaft having a columnar shape or a cylindrical shape, and a pair of opposing support walls provided on the support base and facing each other with the cable support shaft interposed therebetween in the axial direction of the first rotation shaft, The first and second positions of the cable of the servo motor are fixed to the rear end portion of the first rotation base and the opposed support wall on the rear side, and the cable is movable between the first and second positions. The portion is wound around the cable support shaft in a state in which the rotation of the first rotation base relative to the support base is allowed.

  According to a third aspect of the present invention, in the wire rod forming machine according to the second aspect, a hollow shaft portion provided on the first rotation base, extending coaxially forward of the cable support shaft and rotatably supported by the support base on the outer side. The second servo motor cable is inserted inside the hollow shaft portion.

  According to a fourth aspect of the present invention, in the wire rod forming machine according to the second or third aspect, the plurality of plate members are arranged along the circumferential direction of the cable support shaft, and the adjacent plate members are rotated in the plate thickness direction. A cable guide having one end portion and the other end portion fixed to the rear end portion of the first rotation base and the opposing support wall on the rear side, and a cable intermediate movable portion on each plate-like member. Cable holding means for holding in an overlapped state, and the connecting portion of the plate-like members is wound in one direction from one end of the cable support shaft to the middle while the middle portion of the cable guide is in the shape of a hairpin on the way The cable support shaft is folded back and wound in the opposite direction to the other end, and the hairpin-shaped folded portion of the cable guide rotates around the cable support shaft according to the rotation position of the first rotation base. Characterized in was configured to move in the axial direction.

  According to a fifth aspect of the present invention, there is provided the wire rod forming machine according to any one of the second to fourth aspects, wherein the first servo motor and the rotation of the first servo motor are decelerated to reduce the rotation of the cable support shaft. The first rotary shaft speed reducer, which is transmitted to the end portion, is arranged on the same axis as the first rotary shaft and is assembled to the opposing support wall on the rear side.

  According to a sixth aspect of the present invention, in the wire rod forming machine according to any one of the first to fifth aspects, the second servo motor and the second rotation that transmits the rotation of the second servo motor at a reduced speed. The shaft speed reducer is characterized by being connected in series on the same axis of the second rotating shaft.

  A seventh aspect of the present invention is the wire rod forming machine according to any one of the first to fifth aspects, wherein the second servo motor and the second rotation that transmits the second servo motor at a reduced speed are transmitted. A shaft reduction gear and a first bevel gear are arranged in series on the same axis of a third rotation shaft orthogonal to the second rotation shaft and connected in series, and a second bevel gear meshing with the first bevel wheel and a second rotation It is characterized in that the base is connected in series on the same axis of the second rotating shaft.

  According to an eighth aspect of the present invention, in the wire rod forming machine according to any one of the first to seventh aspects, the tool drive mechanism includes a first linear motion shaft whose support base is parallel or coaxial with the wire rod feeding direction. And a second linear motion drive mechanism that linearly moves the support base along a second linear motion axis that is orthogonal to the wire feed direction. .

[Invention of claims 1, 6 and 7]
In the first aspect of the invention, since the second servo motor for rotationally driving the second rotation base is mounted on the first rotation base, the first rotation base is rotated around the first rotation axis by the first servo motor. When this is done, the second rotating base does not rotate. Thereby, it is not necessary to control the rotational position of the forming tool in consideration of the accompanying rotation, and the position control of the forming tool is facilitated.

  Here, the second servo motor is fixed to the first rotation base, as in the sixth aspect of the invention, for the second servo motor and the second rotation shaft that transmits the rotation of the second servo motor at a reduced speed. The speed reducer may be configured to be connected in series on the same axis of the second rotating shaft, and the second servo motor and the rotation of the second servo motor are decelerated as in the invention of claim 7. The second rotation shaft speed reducer and the first bevel gear that transmit in series are connected in series on the same axis of the third rotation shaft that is orthogonal to the second rotation shaft, and the second rotation gear meshes with the first bevel gear. The configuration may be such that the bevel gear and the second rotation base are connected in series on the same axis of the second rotation shaft. In addition, according to the structure of Claim 6, the number of gears between a 2nd servomotor and a 2nd rotation base can be decreased, and the influence by the backlash of a gear can be suppressed. In the configuration of claim 7, in particular, if the third rotating shaft is arranged in parallel with the first rotating shaft, the bulk of the second servomotor in the axial direction of the second rotating shaft is suppressed, and the tool driving mechanism Compactness is achieved.

[Inventions of Claims 2 and 3]
In the invention of claim 2, the cable of the second servo motor is fixed to the rear end portion of the first rotation base and the opposing support wall on the rear side of the support base, and the cable intermediate movable portion between these fixed portions is provided. Since it is wound around the cable support shaft, the cables of the second servo motor can be gathered in a compact manner.

  In addition, as in the invention of claim 3, a hollow shaft portion is provided on the first rotation base, extends coaxially forward of the cable support shaft, and is rotatably supported by the support base on the outer side. If the second servo motor cable is inserted inside the second servo motor, the second servo motor cable is housed in a portion of the first rotation base that is rotatably supported by the support base, thereby making the cable more compact. Can be summarized.

[Invention of claim 4]
According to the fourth aspect of the present invention, the hairpin-shaped folded portion of the cable guide moves in the axial direction of the cable support shaft while rotating around the cable support shaft according to the rotation position of the first rotation base. The twist of the cable intermediate movable part due to the rotation of the base can be eliminated.

[Invention of claim 5]
According to the fifth aspect of the present invention, the number of gears between the first servo motor and the first rotation base can be reduced, and the influence of gear backlash can be suppressed.

[Invention of Claim 8]
According to invention of Claim 8, a shaping | molding tool can be linearly moved along the 1st linear motion axis | shaft parallel or coaxial with a wire rod feeding direction, and the 2nd linear motion shaft orthogonal to a wire rod feeding direction. Therefore, a large molding area can be taken.

The side view which cut the wire rod forming machine concerning a 1st embodiment of the present invention partially with the vertical plane Front view of a wire forming machine partially cut along a vertical plane Enlarged view around the support base in FIG. Perspective view of cable guide (A) Side view of cable guide before rotation of first rotation base, (B) Side view of cable guide after rotation of first rotation base The side view which cut | disconnected the support base periphery of the wire forming machine which concerns on 2nd Embodiment of this invention partially on the vertical surface. AA sectional view in FIG. The side view which cut | disconnected the support base periphery of the wire forming machine which concerns on 3rd Embodiment of this invention partially by the vertical surface. Side view in which the periphery of the support base of the wire rod forming machine according to the modification is partially cut by a vertical surface Side view in which the periphery of the support base of the wire rod forming machine according to the modification is partially cut by a vertical surface

[First Embodiment]
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the wire rod forming machine 10 includes a wire rod feeding device 12 for feeding the wire rod 90 and a tool driving mechanism 20 for driving the molding tool T (in FIG. 1). The wire rod feeding device 12 and the forming tool T are partitioned by an upright wall 11H of the base frame 11.

  The wire rod feeding device 12 includes a plurality of pairs of rollers 13 and 13 arranged one above the other in a line feed direction. The pair of rollers 13 and 13 sandwich a wire rod 90 supplied from a wire rod supply device (not shown) and rotate symmetrically by receiving a driving force from a roller drive servomotor (not shown) attached to the base frame 11. The wire rod 90 is fed. In the present embodiment, by changing the rotation direction of the roller driving servomotor, the wire 90 can be fed forward or can be pulled back to the opposite side (ie, rearward). Yes.

  A quill 14 is provided on the front surface of the standing wall 11 </ b> H of the base frame 11. As shown in FIG. 3, the quill 14 is formed with a wire feed hole 14 </ b> A having a circular cross section corresponding to the cross-sectional shape of the wire 90 in the front-rear direction. The wire 90 fed by the pair of rollers 13 and 13 is fed to the molding region R1 in front of the quill 14 while being restricted from moving laterally through the wire feed hole 14A. It has become.

  As shown in FIG. 2, a plurality of auxiliary tool driving mechanisms 70 are radially provided on the front surface of the standing wall 11 </ b> H on the side of the quill 14. The auxiliary tool drive mechanism 70 has an auxiliary tool 74 such as a mandrel tool or a cutting tool on the quill 14 side, and has a structure in which the auxiliary tool 74 can be reciprocated along the linear guide 73G by the crank mechanism 72. Thereby, the auxiliary tool 74 advances and retreats with respect to the forming region R1 (see FIG. 1) in a direction orthogonal to the wire feeding direction.

  As shown in FIG. 3, the tool driving mechanism 20 is configured to freely move the forming tool T around the first rotation axis J1 parallel or coaxial with the wire feeding direction and around the second rotation axis J2 orthogonal to the first rotation axis J1. It is designed to rotate to the rotational position. Specifically, the tool driving mechanism 20 is rotated by the support base 23 so as to be rotatable about the first rotation axis J1 and rotated by the first rotation base 30 about the second rotation axis J2. A second rotation base 40 that is supported is provided, and a plurality of (for example, three) molding tools T are fixed to the second rotation base 40.

  Further, the tool drive mechanism 20 moves the support base 23 along two axes: an X axis parallel or coaxial with the wire feeding direction and a horizontal Y axis (see FIG. 2) perpendicular to the wire feeding direction and horizontal. It is configured to be able to move directly. According to this configuration, the molding region R1 can be widened. In addition, the 1st rotating shaft J1 can be arrange | positioned coaxially with a wire rod feeding direction by moving the support base 23 to a Y-axis direction. 1 to 3, the vertical axis perpendicular to the X axis and the Y axis is represented as the Z axis.

  Specifically, as shown in FIG. 1, a slide base 22 is mounted on a bracket 21 attached to the front surface of the upright wall 11 </ b> H, and a support base 23 is mounted on the slide base 22. The support base 23 moves linearly along the X axis with respect to the slide base 22 by the first ball screw mechanism 23K (corresponding to the “first linear drive mechanism” of the present invention), and the second ball screw mechanism 22K (main The slide base 22 is linearly moved along the Y axis with respect to the bracket 21 (refer to FIG. 2). The central axis of the ball screw of the first ball screw mechanism 23K is the first linear motion axis K1 of the present invention, and the central axis of the ball screw of the second ball screw mechanism 22K is the second linear motion axis K2.

  As shown in FIG. 3, the support base 23 includes a pair of opposed support walls 24 and 24 that face each other in the axial direction of the first rotation axis J1. The front opposing support wall 24A disposed on the front side (left side in FIG. 3) near the wire feeding device 12 of the pair of opposing support walls 24, 24 has a base insertion hole coaxial with the first rotation axis J1 at the upper end. 25. The lower end portion of the front facing support wall 24A is fixed to the ball nut 23N of the first ball screw mechanism 23K.

  Moreover, the rear side opposing support wall 24B disposed on the rear side (the right side in FIG. 3) of the pair of opposing support walls 24, 24 away from the wire feeding device 12 covers the base insertion hole 25 from the rear side. The pair of connecting walls 26, 26 extending in the axial direction of the first rotation axis J1 from the upper and lower ends are supported on the front-side opposing support wall 24A.

  The first rotation base 30 has a hollow shaft portion 31 coaxial with the first rotation axis J1 extending from the rear surface of the flat plate portion 34 orthogonal to the first rotation axis J1, and is offset from the first rotation axis J1 in the front surface of the flat plate portion 34. From this position, the mounting head portion 32 extends in parallel with the first rotation axis J1.

  The hollow shaft portion 31 is inserted into the base insertion hole 25 of the front facing support wall 24A, and is rotatably supported by the front facing support wall 24A via a bearing. Further, from the rear end of the hollow shaft portion 31, a cable support shaft 33 extends coaxially with the hollow shaft portion 31 (that is, coaxially with the first rotation axis J1), and the pair of opposing support walls 24, 24 described above. It is sandwiched between.

  The mounting head portion 32 includes a shaft insertion hole 32A coaxial with the second rotation axis J2 at the front end portion, and a cable insertion hole 32B parallel to the shaft insertion hole 32A at the rear end portion. The flat plate portion 34 and the hollow shaft portion 31 are provided with a communication hole 34A coaxially with the first rotation axis J1.

  The second rotation base 40 includes a rotation shaft 41 inserted through the shaft insertion hole 32A, and a tool holding table 42 that is fixed to one end of the rotation shaft 41 and has a plate shape orthogonal to the rotation shaft 41. A plurality of molding tools T can be fixed to the outer peripheral portion of the holding table 42. Then, the rotation shaft 41 is rotatably supported by the mounting head portion 32 via the bearing, so that the second rotation base 40 is supported by the first rotation base 30 so as to be rotatable around the second rotation axis J2. Yes. Further, all of the plurality of molding tools T fixed to the tool holding table 42 are arranged in a plane including the first rotation axis J1 orthogonal to the second rotation axis J2.

  Now, in the wire rod forming machine 10 of the present embodiment, the first servo motor 50 for rotating the first rotation base 30 is fixed to the support base 23, while the second servo base 50 for rotating the second rotation base 40 is rotated. Two servo motors 60 are fixed to the first rotation base 30. More specifically, a first rotary shaft speed reducer 51 is assembled on the rear surface of the support base 23 on the rear facing support wall 24B, and the first servo is connected to the input shaft of the first rotary shaft speed reducer 51. The motor 50 is directly connected. In addition, the rear end portion of the cable support shaft 33 is fixed to the output shaft of the first rotation shaft speed reducer 51. As a result, the driving force of the first servo motor 50 is transmitted to the cable support shaft 33 via the first rotary shaft reduction gear 51, and the first rotary base 30 moves around the first rotary shaft J <b> 1 with respect to the support base 23. It is designed to rotate.

  The first rotating shaft reduction gear 51 has a structure in which an input shaft and an output shaft are coaxially arranged, and an output shaft of the first servo motor 50 is arranged on the first rotating shaft J1. Yes. That is, the first servo motor 50 and the first rotating shaft reduction gear 51 are arranged on the first rotating shaft J1.

  As shown in FIG. 3, the second servomotor 60 is fixed to the mounting head portion 32 of the first rotation base 30. Specifically, the second rotary shaft speed reducer 61 is assembled on the side of the mounting head portion 32 away from the first rotary shaft J1, and the output shaft of the second rotary shaft speed reducer 61 is The shaft insertion hole 32 </ b> A is inserted into the rotation shaft 41 of the second rotation base 40. The second servo motor 60 is directly connected to the input shaft of the second rotating shaft reduction gear 61. As a result, the driving force of the second servo motor 60 is transmitted to the rotary shaft 41 via the second rotary shaft speed reducer 61, and the second rotary base 40 rotates around the second rotary shaft J <b> 2 with respect to the first rotary base 30. It is designed to be driven to rotate.

  The second rotating shaft reducer 61 also has a structure in which the input shaft and the output shaft are arranged coaxially, like the first rotating shaft reducer 51, and the second servomotor 60, The second rotation shaft speed reducer 61 and the second rotation base 40 are arranged on the second rotation shaft J2.

  Here, the cable 62 of the second servomotor 60 extends toward the first rotation axis J1 through the cable insertion hole 32B of the mounting head portion 32, and passes through the communication hole 34A of the flat plate portion 34 and the hollow shaft portion 31. ing. The cable 62 is drawn outward at the rear end portion of the hollow shaft portion 31, and extends to the rear of the rear facing support wall 24B through the through hole 27 formed in the rear facing support wall 24B. The cable 62 is fixed to the rear end portion of the first rotation base 30 and the rear side opposing support wall 24B, and the cable intermediate movable portion 62C (see FIG. 4) located between the fixed portions is connected to the cable support shaft. It is supported in a state wound around the outside of 33. In FIG. 2, the cable of the first servo motor 50 and the cable 62 of the second servo motor 60 are omitted.

  Specifically, a cable guide 63 (for example, a twister band manufactured by Igus Co., Ltd.) shown in FIG. 4 is wound around the outside of the cable support shaft 33, and the cable intermediate movable portion 62C is supported by the cable guide 63. Yes. The cable guide 63 has a plurality of arc-shaped plates 64 having a sector shape cut out in the circumferential direction, and the adjacent arc-shaped plates 64 are connected to each other so as to be rotatable in the plate thickness direction by, for example, a hinge. It has a structure.

  Further, on one surface of each arc-shaped plate 64, a cable fixing portion 64A (a “cable holding” according to the present invention) is formed in a gate shape and the leg portion communicates with an inner side position and an outer side position of the arc-shaped plate 64. Corresponding to “means”). Then, the cable intermediate movable portion 62C is inserted between the cable fixing portion 64A and the arc-shaped plate 64, so that the cable intermediate movable portion 62C is held in a state of being superimposed on the arc-shaped plate 64. One end portion and the other end portion of the guide 63 are fixed to the rear end portion of the first rotation base 30 and the rear facing support wall 24B, respectively.

  In the present embodiment, the portion of the cable 62 fixed to the rear end portion of the first rotation base 30 and the portion fixed to the rear facing support wall 24B are the “second servo motor cable” of the present invention. Corresponds to “first and second positions”.

  As shown in FIG. 4, the intermediate portion of the cable guide 63 is wound in one direction (in the direction of arrow A in FIG. 4) around the cable support shaft 33 from the front end portion to the intermediate portion of the cable support shaft 33. The cable support shaft 33 is folded back in a hairpin shape, and is wound in the reverse direction (the direction indicated by the arrow B in FIG. 4) from the intermediate portion to the rear end portion of the cable support shaft 33.

  Here, as described above, the portion of the cable 62 sandwiching the cable intermediate movable portion 62C is fixed to the rear end portion of the first rotation base 30 and the rear facing support wall 24B. When the base 30 rotates, the cable intermediate movable portion 62C may be twisted. However, in the wire rod forming machine 10 of this embodiment, as shown in the change from FIG. 5 (A) to FIG. 5 (B), the hairpin-like shape in the cable guide 63 according to the rotational position of the first rotation base 30. The folded portion 63H moves around the cable support shaft 33 in the axial direction of the cable support shaft 33 (in the example of FIG. 5B, the hollow shaft portion 31 side). Thereby, the twist of the cable intermediate movable part 62 </ b> C accompanying the rotation of the first rotation base 30 is eliminated. 5A and 5B, the distance between the cable guides 63 in the axial direction of the cable support shaft 33 is exaggerated.

  In the present embodiment, the cable guide 63 is wound around the outside of the cable support shaft 33 by one or more turns so that the cable intermediate movable portion 62C does not twist even if the first rotation base 30 makes one rotation. Yes. In other words, the cable intermediate movable portion 62C is supported by the cable guide 63 and the cable fixing portion 64A in a state in which the first rotation base 30 is allowed to make one rotation.

  This completes the description of the configuration of the wire forming machine 10 according to the present embodiment. Next, the effect of the wire rod forming machine 10 will be described. In order to form the wire rod 90 with the wire rod forming machine 10, first, the support base 23 is retracted from the molding region R1 in front of the quill 14, and the wire rod 90 having a predetermined length is formed by the wire rod feeding device 12 into the molding region R1. To be sent to.

  Next, the tool drive mechanism 20 moves the support base 23 linearly in the X-axis direction and the Y-axis direction to place the second rotation base 40 in the molding region R1, and also feed the wire 90 and the first rotation axis J1. Match. Also, the second servo motor 60 rotates the second rotation base 40 around the second rotation axis J2 to select one molding tool T selected from a plurality of molding tools T (hereinafter referred to as “first molding tool T”). ) Toward the quill 14 side, and the first servo motor 50 rotates the first rotation base 30 around the first rotation axis J1 to adjust the rotation position of the first forming tool T with respect to the wire 90.

  Then, the wire rod 90 is fed by the wire rod feeding device 12, and the first forming tool T is brought into contact with the wire rod 90 protruding from the quill 14. As a result, the wire 90 is formed by the first forming tool T. At this time, the auxiliary tool driving mechanism 70 that can move forward and backward in the diagonally upper left direction and includes the mandrel tool as the auxiliary tool 74 shown in FIG. 2 is operated, and the mandrel tool and the first forming tool T are operated. You may shape | mold the wire 90.

  Subsequently, for example, when the wire 90 is formed with another forming tool T selected from a plurality of forming tools T (hereinafter referred to as “second forming tool T”), first, the tool driving mechanism 20 supports the wire 90. The base 23 is moved linearly to retract the second forming tool T from the forming region R1, and the wire 90 is fed to the forming region R1 by a predetermined length as necessary. Then, the second rotation base 40 is rotated around the second rotation axis J2, the second forming tool T is directed toward the quill 14 side, and the wire rod 90 is formed by the second forming tool T. At this time, if necessary, the first rotation base 30 is rotated about the first rotation axis J1. Further, the wire base 90 is formed by moving the support base 23 directly as necessary.

  When the forming of the wire 90 is completed as described above, the second rotary base 40 is retracted from the forming region R1, and then can be moved back and forth in the vertical direction shown in FIG. Then, the auxiliary tool driving mechanism 70 is operated to cause the cutting tool to enter the forming region R <b> 1, and the portion of the wire 90 that has been formed is cut off from the subsequent wire 90. Thereby, the molded product of the wire 90 is obtained.

  And according to the wire rod forming machine 10 according to the present embodiment, since the second servo motor 60 for rotating the second rotation base 40 is attached to the first rotation base 30, like the conventional wire rod forming machine. When the first rotation base 30 is rotated, the second rotation base 40 does not rotate. Accordingly, it is not necessary to control the rotational position of the forming tool T around the second rotation axis J2 in consideration of the accompanying rotation, and the position control of the forming tool T is facilitated. The first servo motor 50 and the first rotary shaft speed reducer 51 are arranged on the same axis as the first rotary shaft J1 and assembled to the rear facing support wall 24B, and the second servo motor 60, Since the two-rotating shaft speed reducer 61 and the second rotating base 40 are connected in series on the same axis of the second rotating shaft J2, the influence of gear backlash is reduced, and the molding tool T The accuracy of the position control is improved.

  Here, in the configuration in which the second servo motor 60 is attached to the first rotation base 30, the handling of the cable 62 of the second servo motor 60 becomes a problem. That is, the cable intermediate movable part 62C of the cables 62 of the second servo motor 60 is short or hooked on a peripheral member, for example, and rotates the first rotation base 30 once around the first rotation axis J1. If it becomes impossible, the wire 90 cannot be formed into an arbitrary shape. However, in the wire rod forming machine 10 of the present embodiment, the cable guide 63 and the cable fixing portion 64A support the cable intermediate movable portion 62C in a state that allows the first rotation base 30 to rotate one or more times. Therefore, the wire 90 can be formed into an arbitrary shape.

  Further, in the wire rod forming machine 10 of the present embodiment, the cable intermediate movable portion 62C is supported by the cable guide 63 so as to be wound around the cable support shaft 33, so the cables 62 of the second servomotor 60 are gathered in a compact manner. It becomes possible. Moreover, since the cable 62 on the front side of the cable intermediate movable portion 62C is inserted into the hollow shaft portion 31, the cables 62 can be gathered more compactly. Further, the folded portion 63H (see FIG. 5A) of the cable guide 63 moves in the axial direction of the cable support shaft 33 while rotating around the cable support shaft 33 according to the rotation position of the first rotation base 30. Therefore, the twist of the cable intermediate movable portion 62C accompanying the rotation of the first rotation base 30 is eliminated.

[Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. The wire rod forming machine 10V of the present embodiment is a modification of the tool drive mechanism 20 of the wire rod forming machine 10 of the first embodiment, and as shown in FIG. The arrangement of the machine 61 is greatly different from that of the first embodiment.

  Specifically, as shown in FIG. 7, in the tool driving mechanism 20V of the wire rod forming machine 10V, the second servo motor 60 and the second rotating shaft speed reducer 61 include the second rotating shaft J2 and the first rotating shaft J1. The first bevel gear 80 is fixed to the output shaft of the second rotary shaft reduction gear 61 so as to be integrally rotatable. In addition, the first rotation base 30V is provided with a motor fixing portion 35 that extends to the opposite side of the first rotation axis J1 at a position offset from the second rotation axis J2 in the mounting head portion 32V, and performs the second rotation. The shaft speed reducer 61 is assembled to the motor fixing portion 35 in a state where the input shaft is inserted into the input shaft insertion hole 35 </ b> A penetrating the motor fixing portion 35. In addition, a second bevel gear 81 is attached to the distal end portion of the rotary shaft 41 inserted through the shaft insertion hole 32 </ b> A so as to be integrally rotatable, and the first bevel gear 80 meshes with the second bevel gear 81. Thus, the driving force of the second servomotor 60 is transmitted to the rotating shaft 41 (second rotating base 40).

  As shown in FIG. 6, the cable 62 of the second servomotor 60 passes through the first rotating shaft J1 side (the front side in the depth direction of the paper in FIG. 6) of the mounting head portion 32V to the first rotating shaft J1. The plate 34 extends through the communication hole 34 </ b> A of the hollow shaft 31.

  About the other structure of the wire rod forming machine 10V, since it is the same as the said 1st Embodiment 10, description is abbreviate | omitted by attaching | subjecting the same code | symbol. According to the wire rod forming machine 10V of the present embodiment, the same effects as those of the first embodiment can be obtained.

[Third Embodiment]
Hereinafter, a third embodiment of the present invention will be described with reference to FIG. As shown in FIG. 8, the wire rod forming machine 10W of the present embodiment is a modification of the tool drive mechanism 20V of the second embodiment, and the third rotation axis J3 is parallel to the first rotation axis J1. The point is greatly different from the second embodiment.

  As shown in FIG. 8, in the tool drive mechanism 20W of the wire rod forming machine 10W, the mounting head portion 32W is elongated in the axial direction of the first rotation axis J1, and the shaft insertion hole 32A is disposed at the front end portion thereof. . Further, the motor fixing portion 35W is disposed on the rear side of the shaft insertion hole 32A. In the state shown in FIG. 8, the second space is provided between the motor fixing portion 35W and the front facing support wall 24A of the support base 23. A servo motor 60 and a second rotating shaft speed reducer 61 are accommodated.

  In the present embodiment, the flat plate portion 34W of the first rotation base 30W covers the opening of the hollow shaft portion 31 from the front, and introduces a cable 62 for introducing the cable 62 of the second servomotor 60 to the inside of the hollow shaft portion 31. A hole 37 is provided.

  About the other structure of the wire forming machine 10W, since it is the same as the said 2nd Embodiment 10V, description is abbreviate | omitted by attaching | subjecting the same code | symbol. According to the wire rod forming machine 10W of the present embodiment, the same effects as those of the first and second embodiments can be obtained. In the present embodiment, since the second servomotor 60 and the second rotary shaft speed reducer 61 are arranged on the third rotary shaft J3 parallel to the first rotary shaft J1, the second rotary shaft J2 The bulk of the second servomotor 60 in the axial direction is suppressed, and the tool drive mechanism can be made compact.

[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various modifications are possible within the scope of the invention other than the following. It can be changed and implemented.

  (1) The support base 23 may be configured to be linearly movable along three axes of the X axis, the Y axis, and the Z axis. Specifically, for example, an elevating base that can move directly in the Z-axis direction with respect to the bracket 21 is provided, and a slide base 22 is mounted on the elevating base so that the slide base 22 is in the Y-axis direction with respect to the elevating base. It is good also as a structure which moves linearly.

  (2) As shown in FIG. 9, the cable intermediate movable portion 62 </ b> C of the cable 62 may be hooked on a hook 82 that is suspended from the support base 23 so as to be movable up and down. According to this configuration, it is possible to prevent the cable intermediate movable portion 62C from hanging down. Further, since the hook 82 moves up and down, the cable 62 is prevented from being stretched when the first rotation base 30 is rotated.

  (3) As shown in FIG. 10, the cable intermediate movable portion 62 </ b> C of the cable 62 may be wound around an auto reel 83 fixed to the support base 23 and wound. Specifically, the cable intermediate movable portion 62 </ b> C is automatically wound around the rotating reel portion of the auto reel 83 according to the slack, wound, and stored in the auto reel 83. According to this configuration, it is possible to prevent the cable intermediate movable portion 62C from hanging down.

  (4) In the above embodiment, the rotation stroke of the first rotation base 30 is one rotation (360 degrees), but may be one rotation or more (for example, 370 degrees or 720 degrees). When the wire 90 is formed, if the forming tool T does not need to be rotated once with respect to the wire 90, the rotation stroke of the first rotation base 30 is less than one rotation (for example, 180 degrees or 240 degrees). ).

  (5) In the above embodiment, the feeding direction of the wire 90 is horizontal, but it may be vertical.

10, 10V, 10W Wire rod forming machine 20, 20V, 20W Tool drive mechanism 22K Second ball screw mechanism (second linear drive mechanism)
23 support base 23K first ball screw mechanism (first linear drive mechanism)
24 opposing support walls 30, 30V, 30W first rotation base 31 hollow shaft portion 33 cable support shaft 40 second rotation base 50 first servo motor 51 first rotation shaft speed reducer 60 second servo motor 61 second rotation shaft Reducer 62 Cable 62C Cable intermediate movable part 63 Cable guide 64 Arc-shaped plate (plate-shaped member)
64A cable fixing part (cable holding means)
90 Wire rod J1 First rotary shaft J2 Second rotary shaft J3 Third rotary shaft K1 First linear motion shaft K2 Second linear motion shaft T Molding tool

Claims (8)

A forming tool, which is an abutting partner of the wire rod fed along the wire rod feeding direction, has a second rotating shaft that is parallel to or coaxial with the wire rod feeding direction and orthogonal to the first rotating shaft. A first rotation base that is rotatably supported around a first rotation axis by a support base and is driven to rotate by a first servo motor; A second rotation base supported rotatably by the first rotation base around the second rotation axis and driven to rotate by a second servo motor, and the molding tool is fixed to the second rotation base. In the wire rod forming machine
A wire rod forming machine, wherein the first servo motor is fixed to the support base, and the second servo motor is fixed to the first rotation base. A cable support shaft having a columnar or cylindrical shape with the first rotation axis as a central axis, provided at a rear end portion of the first rotation base away from the wire source;
A pair of opposing support walls provided on the support base and facing each other with the cable support shaft interposed therebetween in the axial direction of the first rotation shaft,
The first and second positions of the cable of the second servo motor are fixed to the rear end portion of the first rotation base and the opposing support wall on the rear side, and the first and second positions are fixed. The wire rod forming machine according to claim 1, wherein the intermediate cable movable portion is wound around the cable support shaft in a state in which the rotation of the first rotation base with respect to the support base is allowed.   A hollow shaft portion provided on the first rotation base, extending coaxially forward of the cable support shaft and rotatably supported by the support base on the outer side; and the second servomotor on the inner side of the hollow shaft portion The wire rod forming machine according to claim 2, wherein the cable is inserted. A plurality of plate-like members are arranged along the circumferential direction of the cable support shaft, and the adjacent plate-like members are connected to each other so as to be rotatable in the plate thickness direction. A cable guide fixed to the rear end portion of the one-rotation base and the opposed support wall on the rear side;
Cable holding means for holding the cable intermediate movable portion in a state of being overlapped on each plate-like member,
The intermediate part of the cable guide is wound in one direction from one end of the cable support shaft to the middle while the plate-shaped members are connected to each other. The hairpin-shaped folded portion of the cable guide moves in the axial direction of the cable support shaft while rotating around the cable support shaft in accordance with the rotation position of the first rotation base. The wire rod forming machine according to claim 2 or 3, characterized in that:   The first servomotor and a first rotary shaft speed reducer that decelerates the rotation of the first servomotor and transmits it to the rear end of the cable support shaft are arranged coaxially with the first rotary shaft. The wire rod forming machine according to any one of claims 2 to 4, wherein the wire rod forming machine is assembled to the opposite support wall on the rear side.   The second servo motor and a second rotary shaft speed reducer that transmits the second servo motor at a reduced speed are connected in series on the same axis of the second rotary shaft. The wire rod forming machine according to any one of claims 1 to 5.   The second servomotor, the second rotating shaft reducer that transmits the rotation of the second servomotor at a reduced speed, and the first bevel gear are coaxial with the third rotating shaft that is orthogonal to the second rotating shaft. A second bevel gear that is connected in series in series and meshed with the first bevel wheel and the second rotation base are connected in series on the same axis of the second rotation shaft. The wire rod forming machine according to any one of claims 1 to 5.   The tool driving mechanism includes: a first linear drive mechanism that linearly moves the support base along a first linear movement axis parallel to the wire feed direction; and a first drive mechanism that orthogonally intersects the support base with the wire feed direction. The wire rod forming machine according to any one of claims 1 to 7, further comprising a second linear motion drive mechanism that linearly moves along two linear motion axes.

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