JP2011056541A - Bending apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform the most favorable bending to the gravity by turning both a material fitting part and a bending unit. <P>SOLUTION: A wire W stored in a wire coil stand V1 is passed through a straightening unit 100 via a delivery guide V2, and fed into a bending unit F1 by a wire feeding unit 200. In the straightening unit 100, a housing 101 is rotatably supported by a supporting stay fixed to a device body side, and a straightening roller 103 is stretched by the housing 101. The wire feeding unit 200 has a roller fitting part 210 in which the housing is rotatably supported by the supporting stay fixed to the device body side, and the feed roller is stretched by the housing, a power driving unit 220 of the feed roller, and a power turning unit 230 of the housing. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a bending apparatus for wire, pipe and the like.

  As an example of this kind, what was described in the patent literature was as follows. The fixing base grips the work and fixes the work in a predetermined position. Then, the two sets of sliding mechanisms respectively move the moving table along the rails, and move the bending head to the bending position in the axial direction of the workpiece. Further, the two sets of rotating mechanisms rotate the bending heads in a predetermined direction corresponding to the bending direction of the work, respectively, around a parallel axis separated from the work by a predetermined distance, and the two sets of moving mechanisms are operated by the bending head. Are moved linearly in a vertical direction and a front-rear direction perpendicular to the axial direction of the workpiece to a position corresponding to the workpiece according to the bending radius. Then, the bending head rotates the clamping die around the bending die to bend the workpiece in a predetermined bending direction with a predetermined bending radius.

Japanese Examined Patent Publication No. 6-35016

  However, if the material (workpiece) is clamped, the machining angle is determined without rotating, and machining advantageous to gravity cannot be performed. That is, for example, when bent to the side (horizontal) for a long time, the processing is not stable due to the shake due to the weight of the workpiece, and if the workpiece is processed in a shaken state, the bending angle deviates from the set value. Therefore, machining must be waited until the runout stops, and the production speed does not increase. Further, the holding of the rotating bending head is fragile from the viewpoint of structure, and stable machining accuracy cannot be obtained.

  An object of the present invention is to solve the above-mentioned problems and to provide a bending apparatus capable of performing the most advantageous processing against gravity by rotating both the material attachment portion and the processing portion.

  The first problem-solving means of the present invention is such that the wire stored in the wire coil stand passes through the correction section via the feeding guide and is fed into the processing section by the wire feeding section. The housing is rotatably supported on a support column fixed to the apparatus main body side, and a correction roller is mounted on the housing, and the wire feed portion is attached to the support column fixed to the apparatus main body side. A roller mounting portion that is rotatably supported and has a feed roller mounted on the housing, a power drive portion of the feed roller, and a power rotation portion of the housing.

  The processing section is inserted into a mandrel provided on a material feeding axis, a mandrel rotating section for rotating the mandrel about an axis, and the mandrel is penetrated around the mandrel so as to be rotatable about the mandrel. A disc-shaped bending sleeve, a bending convex portion protruding from the bending sleeve, a bending sleeve rotating portion for rotating the bending sleeve about an axis, and an extension of the material delivery horizontal axis. And a mandrel revolving part that can turn in a vertical plane.

  And the following aspect is included. In the mandrel revolving part, centering on the extension of the material delivery horizontal axis, a disk supported rotatably in a vertical plane, the rotating part of the disk, and an end surface of the disk, the material delivery horizontal axis A horizontal member extending in parallel on the extension and provided with the mandrel.

  The horizontal member is provided with a housing, or the horizontal member is hollow so as to serve as a housing, and the cylindrical portion of the bending sleeve is rotatably held inside, and the convex portion is bent on the outer surface of the disk portion located outside. In the bending sleeve rotating portion, a passive gear is fixed to an end portion of the bending sleeve cylindrical portion, a driving gear meshing with the passive gear is fixed to the driving shaft, and the driving shaft is rotatably held. However, a bending motor is connected to the outer end of the housing, and power advancement / retraction means connected to a pinching member that sandwiches the side surface of the passive gear is provided on the bottom surface of the housing at the bending sleeve advance / retreat portion.

  The horizontal member is provided with a housing, or the horizontal member is hollow and serves as a housing, and the mandrel shaft portion is rotatably held inside the cylindrical portion of the bending sleeve, and the disc portion is located outside. A bending guide portion projects from the outer surface of the mandrel, and in the mandrel rotating portion, a passive gear is fixed to the mandrel shaft, a drive gear meshing with the mandrel is fixed to the drive shaft, and the drive shaft is rotatable. Although being held, a bending motor is connected to the outer end portion of the housing, and at the mandrel advance / retreat portion, a power advance / retreat means connected to a pinching member that sandwiches the side surface of the passive gear is provided on the bottom surface of the housing.

A mandrel advancing / retreating part for advancing and retreating the mandrel in the axial direction. And a bending sleeve advancing / retreating part for advancing and retracting the bending sleeve in the axial direction.

  According to the present invention, since both the attachment portion and the processing portion of the material can be rotated, processing that is most advantageous against gravity can be performed.

It is a partial cross section front view of one Example of this invention. It is a principal part enlarged view of FIG. It is Yb-Yb sectional drawing of FIG. 1a. It is Y2-Y2 principal part sectional drawing of FIG. 1a. It is a principal part expanded sectional view of FIG. It is Y4-Y4 sectional drawing of FIG. It is a perspective view of a mandrel. It is sectional drawing of the other Example of the installation place of a bending process part. It is Y7-Y7 sectional drawing of FIG.

An embodiment of the present invention will be described below with reference to the drawings.
In the overall front view of FIG. 1, the wire W stored in the wire coil stand V <b> 1 passes through the guide tube 1 by the wire feed unit 200 through the feeding guide V <b> 2 and the correction unit 100 to the right bending unit F <b> 1. It is sent.

  The outline of the device of the present invention is as follows. The correction unit 100 is configured such that a housing 101 is rotatably supported by a support column fixed to the apparatus main body side via a rotation receiving member 102, and a correction roller 103 is mounted on the housing. The wire feed unit 200 includes a roller mounting portion 210 in which a housing 211 is rotatably supported by a support column fixed to the apparatus main body, and a feed roller 212 is mounted on the housing, and a power drive unit for the feed roller. 220 and the power rotation part 230 of the housing.

  Further, the bending portion F1 having a mandrel 20 having an axis perpendicular to the material protruding from the feeding portion 200, and the mandrel can be swiveled in a vertical plane around the extension of the material feeding horizontal axis. A mandrel revolving unit 80; and a mandrel horizontal moving unit 90 configured to move the mandrel parallel to the material delivery horizontal axis.

  1A, 1B, and 2, in the roller attachment portion 210 of the wire feed portion 200, the housing 211 has a rectangular box shape, and the feed roller 212 is rotatably attached to the side wall via the roller shaft 213. A short cylindrical rotation receiving member 214 is provided on the front wall so as to protrude forward, and this is rotatably supported by the support wall 215. A hollow shaft 216 extends rearward from the rear wall of the housing, and this rear portion is rotatably supported by the support wall 215.

  In the feed drive unit 220, the worm gear 221a and the gear 221c are fixed to the lower roller shaft 213, the gear 221c is fixed to the upper roller 213, and the worm 221b meshing with the worm gear is fixed to the intermediate shaft 222. The intermediate shaft penetrates into the housing. It is rotatably supported by the front and rear walls. A toothed pulley 223a is provided at the rear end of the intermediate shaft 222, a toothed pulley 223b is rotatably provided around the front outer periphery of the hollow shaft 216, and a toothed pulley 223c is provided on the shaft of the servo motor 224 on the upper wall of the body. A toothed belt 223d is stretched on the belt.

  In the housing rotating portion 230, a toothed pulley 231 is provided at the rear end of the hollow shaft 216, and a toothed pulley 232 is provided on the shaft of the motor 234 provided on the side wall of the main body. A toothed belt 233 is stretched between these pulleys. Established. And the rotation receiving member 102 of the said correction | amendment part is connected to the rear end of the hollow shaft 216 via the flange 104, and the correction | amendment part 100 is integrally rotated with the sending part 200. FIG.

  In the mandrel revolving part 80 in FIG. 1, a disk 81 supported by a body 84 so as to be rotatable in a vertical plane around the extension of the material feed horizontal axis, a rotating part 82 of the disk, and the disk A horizontal member 83 that extends in parallel on the extension of the material feed horizontal axis from the end face and is provided with a bending portion F1 including the mandrel. The disk rotating portion 82 includes a passive internal gear 82a concentrically fixed to the inner end of the disk, a drive gear 82b meshed with the passive rotating gear 82a and rotatably supported by the inner wall 84a, and a revolving motor 82c for rotating the same. .

  3 and 4, the bending portion F <b> 1 has a mandrel 20 and a bending sleeve 50. The horizontal member 83 is provided with the housing 2, and the cylindrical portion 52 of the bending sleeve is rotatably held inside the horizontal member 83, and a bending convex portion 53 protrudes from the outer surface of the disk portion 51 located outside. In the bending sleeve rotating portion 60, a passive gear 61 is fixed to an end portion of the bending sleeve cylindrical portion, and a driving gear 62 meshing with the passive gear 61 is fixed to a driving shaft 63, and the driving shaft is rotatably held. The bending motor 64 is connected to the outer end of the housing. In the bending sleeve advance / retreat portion 70, power advance / retreat means (piston cylinder) 72 connected to a pinching member 71 sandwiching the side surface of the passive gear is provided on the bottom surface of the housing 2.

  Inside the cylindrical portion of the bending sleeve 50, the mandrel shaft portion 22 is rotatably held, and a bending guide surface is provided on the outer surface of the disk guide portion 21 located outside. In the mandrel rotating part 30, the passive gear 31 is fixed to the shaft part 22 of the mandrel, and the drive gear 32 meshing with the passive gear 31 is fixed to the drive shaft 33, and the drive shaft is rotatably held. A bending motor 34 is connected to the outer end of the motor. In the mandrel advancing / retreating portion 40, a power advancing / retreating means 42 connected to a pinching member 41 that sandwiches the side surface of the passive gear 31 is provided on the bottom surface of the housing.

  In the mandrel horizontal moving part 90 in FIG. 1, a guide rail 91 that slidably supports the disk 81 and the main body 84, a nut member 92 attached to the main body, and a screw member fitted to the nut member, It comprises a horizontal feed screw rod 93 extending in parallel on the extension of the feed horizontal axis and a horizontal movement motor 94 connected thereto.

  As shown in FIG. 5, in the mandrel, the exposed end surface of the mandrel guide portion 21 has a guide groove 21a along the diameter and a clockwise (plus) direction along the circumferential direction at the other end, and Guide surfaces 21b and 21c are continuously formed in a range of about plus or minus about 90 degrees in the counterclockwise (minus) direction. And nose parts 21d and 21e which determine the minimum bending radius of material are formed in the boundary part of guide surfaces 21b and 21c to these guide grooves 21a. Thereby, the material W protrudes rightward through the guide groove 21a, and is bent with the nose portions 21d and 21e as a support by the rotation of the bending convex portion 43 described below.

  The surface of the bending sleeve large-diameter disk portion 51 is flush with the extension of the material feed horizontal axis, the end surface of the mandrel 20 protrudes from the surface of the bending sleeve large-diameter disk portion 51, and the material guide groove 21 a is formed from the material W. Located in the path. As a result, the mandrel 20 and the bending sleeve 50 can independently move forward and backward in the axial direction and can rotate.

  The case where the wire W as the material is bent will be described with reference to FIGS. The material W is sent out from the wire feed unit 200 through the guide tube 1. The mandrel horizontal moving part 90 is actuated to pass the material through the guide groove 21a of the mandrel 20 and to protrude from the peripheral edge of the mandrel 20 by L1, thereby stopping the feeding of the wire. Next, the bending sleeve 50 is rotated by an angle G1, and the material is pushed and bent by the bending projection 53. Next, the bending sleeve 50 is reversed to return to the origin. Next, the advancing and retracting portions 40 and 70 are operated to retract the mandrel 20 and the bending sleeve 50 and feed the material.

  When the bending surface (bending direction) of the material is in the horizontal plane, the horizontal member 83 of the mandrel revolving part 80 is at the lowest position, and the surface of the mandrel 20 is in the horizontal plane. When the bending surface is in the vertical plane, the disk rotating unit 82 is operated to feed the horizontal member 83 in the horizontal plane passing through the material feed horizontal axis. At this time, when the material bends upward, the material is rotated so that the housing rotating portion 230 is actuated in advance to bend downward. If the bending operation is performed thereafter, the material is bent downward, and the influence of gravity on the material can be advantageous.

  6 and 7 show another embodiment F2 of the place where the bending portion is installed. Instead of the embodiment shown in FIG. 1, the horizontal member 183 is made hollow so as to serve as a housing, and most of the inside is accommodated therein. It is. That is, the bending portion F2 has a mandrel 120 and a bending sleeve 150. A cylindrical portion 152 of the bending sleeve is rotatably held inside the horizontal member 183, and a bending convex portion 153 protrudes from the outer surface of the disk portion 151 located outside. In the bending sleeve rotating portion 160, a passive gear 161 is fixed to an end portion of the bending sleeve cylindrical portion, and a driving gear 162 meshing with the passive gear 161 is fixed to the driving shaft 163, and the driving shaft is rotatably held. The bending motor 164 is connected to the outer end of the upper wall of the horizontal member 183. In the bending sleeve advance / retreat portion 170, power advance / retreat means (piston cylinder) 172 connected to a pinching member 171 that sandwiches the side surface of the passive gear is provided on the upper surface of the lower wall of the horizontal member 183.

  Inside the cylindrical portion 152 of the bending sleeve 150, the mandrel shaft portion 122 is rotatably held, and a bending guide surface is provided on the outer surface of the disk guide portion 121 located outside. In the mandrel rotating part 130, the passive gear 131 is fixed to the shaft part 122 of the mandrel, and the driving gear 132 meshing with the shaft is fixed to the driving shaft 133, and the driving shaft is rotatably held. A bending motor 134 is connected to the outer end of the upper wall of 183. In the mandrel advance / retreat part 140, power advance / retreat means 142 connected to a sandwiching member 141 that sandwiches the side surface of the passive gear 131 is provided on the upper surface of the lower wall of the horizontal member 183.

  The present invention is not limited to the above-described embodiments and embodiments, but includes various modifications without departing from the spirit and scope of the claims.

W material, F1, F2 bending portion V1 wire coil stand V2 delivery guide 1 guide tube 20 mandrel 21 material guide portion 22 shaft portion 30 mandrel rotating portion 31 passive gear 32 drive gear 33 drive shaft 34 motor 40 mandrel advance / retreat portion 41 Clamping member 42 Piston cylinder 50 Bending sleeve 51 Disk part 52 Cylindrical part 53 Bending convex part 60 Bending sleeve rotating part 61 Passive gear 62 Drive gear 63 Drive shaft 64 Bending motor 70 Mandrel advance / retreat part 71 Clamping member 72 Piston cylinder 80 Mandrel revolving part 81 disc 82 disc rotating portion 82a passive internal gear 82b drive gear 82c revolving motor 83 horizontal material 84 main body 84a inner wall 85 arm 90 mandrel horizontal moving portion 91 guide rail 92 nut member 93 feed screw rod 94 horizontal moving mode Motor 100 straightening part 101 housing 102 rotation receiving member 103 straightening roller 104 flange 120 mandrel 121 material guide part 122 shaft part 130 mandrel turning part 131 passive gear 132 drive gear 133 drive shaft 134 motor 140 mandrel advance / retreat part 141 pinching member 142 piston Cylinder 150 Bending sleeve 151 Disc part 152 Cylindrical part 153 Bending convex part 160 Bending sleeve rotating part 161 Passive gear 162 Driving gear 163 Driving shaft 164 Bending motor 170 Mandrel advance / retreat part 171 Pinch member 172 Piston cylinder

183 Horizontal material 200 Wire feed portion 210 Roller mounting portion 211 Housing 212 Feed roller 213 Roller shaft 214 Rotation receiving member 215 Support wall 216 Hollow shaft 220 Power drive portion 221a Worm gear 221b Worm 221c Gear 222 Intermediate shaft 223a Toothed pulley 223b Toothed pulley 223c Toothed pulley 223d Toothed pulley 224 Motor 230 Power rotating part 231 Toothed pulley 232 Toothed pulley 233 Toothed belt 234 Motor

Claims (6)

In the wire stored in the wire coil stand, it passes through the correction part through the feeding guide and is sent to the processing part by the wire feeding part.
The correction unit is supported by a support column fixed to the apparatus main body side so that the housing is rotatable, and a correction roller is mounted on the housing.
The wire feeding portion includes a roller mounting portion in which a housing is rotatably supported by a support column fixed to the apparatus main body side, a feed roller mounted on the housing, a power drive portion of the feed roller, and the housing And a power rotation part of
The processing section includes a mandrel provided on a material delivery axis,
A mandrel rotating unit that rotates the mandrel about an axis; and
A disc-shaped bending sleeve that penetrates around the mandrel and is rotatably inserted around the mandrel;
A bending projection protruding from the bending sleeve;
A bending sleeve rotating section for rotating the bending sleeve about an axis;
A bending apparatus comprising: a mandrel revolving portion that enables the mandrel to turn in a vertical plane around the extension of the material delivery horizontal axis.
In the mandrel revolution part,
A disk supported rotatably in a vertical plane around the extension of the material delivery horizontal axis;
A rotating part of the disk;
The bending apparatus according to claim 1, further comprising: a horizontal member extending in parallel on an extension of the material delivery horizontal axis from the end surface of the disk and provided with the mandrel.
The horizontal member is provided with a housing, or the horizontal member is hollow so as to serve as a housing, and the cylindrical portion of the bending sleeve is rotatably held inside, and the convex portion is bent on the outer surface of the disk portion located outside. Is projected,
In the bending sleeve rotating portion, a passive gear is fixed to the end portion of the bending sleeve cylindrical portion, a driving gear meshing with the passive gear is fixed to the driving shaft, and the driving shaft is rotatably held. A bending motor is connected to the end,
3. The bending apparatus according to claim 2, wherein in the bending sleeve advance / retreat portion, a power advance / retreat means connected to a pinching member sandwiching a side surface of the passive gear is provided on the bottom surface of the housing.
The horizontal member is provided with a housing, or the horizontal member is hollow and serves as a housing, and the mandrel shaft portion is rotatably held inside the cylindrical portion of the bending sleeve, and the disc portion is located outside. Bending guides project from the outer surface of the
In the mandrel rotating portion, a passive gear is fixed to the shaft portion of the mandrel, a driving gear meshing with the passive gear is fixed to the driving shaft, and the driving shaft is rotatably held, but bent to the outer end portion of the housing. The motor is connected,
The bending apparatus according to claim 2, wherein in the mandrel advancement / retraction portion, power advancement / retraction means connected to a pinching member that sandwiches a side surface of the passive gear is provided on the bottom surface of the housing.
The bending apparatus according to any one of the preceding claims, further comprising a mandrel advancing / retreating part that advances and retracts the mandrel in an axial direction.
  The bending apparatus according to claim 1, further comprising: a bending sleeve that advances and retracts the bending sleeve in an axial direction.

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