JP2011056540A - Bending device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow the most advantageous working against gravity by turning both of a material mounting part and a working part. <P>SOLUTION: A bending device includes, on the top of a pillar: a material fixing part for turning a linear material around of the axial line in the state where the linear material is thrown down horizontally and fixed; a mandrel by a working part of which the material projected horizontally from the material fixing part is guided and which has the axial line orthogonal to the projected material and is provided on one side or both sides of the material fixing part; a mandrel turning part for turning the mandrel around its axial line; a disk-like bending sleeve on the center of which the mandrel is penetrated and fit turnably around it; a bending projecting part which is provided projectingly on the bending sleeve; a bending sleeve turning part for turning a bending sleeve around its axial line; a mandrel revolving part which is made so as to turn the mandrel on the vertical plane about the extension of the horizontal axial line of the material placing spatial part of the material fixing part; and a mandrel horizontally moving part which moves the mandrel in parallel to the horizontal axial line of the material placing spatial part of the material fixing part. <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 Patent Publication No. 06-35016

  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.

  A first problem-solving means of the present invention includes a material fixing portion provided at the upper end of the support column so as to rotate around the axis line while being fixed with the linear material lying down horizontally, and horizontally from the material fixing portion. A mandrel provided on one or both sides of the material fixing part, and a mandrel rotating part for rotating the mandrel around the axis, guiding the overhanging material at the processing part, having an axis perpendicular to the overhanging material; A disc-shaped bending sleeve that passes through the mandrel and is rotatably inserted around the mandrel, a bending convex portion that protrudes from the bending sleeve, and the bending sleeve that rotates about the axis. A bending sleeve rotating portion to be moved, a mandrel revolving portion capable of swiveling in a vertical plane around an extension of a horizontal axis of a material stationary space portion of the material fixing portion, and the mandrel And a mandrel horizontal moving portion so as to move parallel to the horizontal axis of the material stationary space of the material fixing section.

  The second problem-solving means of the present invention is a material fixing provided at the upper end of the support so that the linear material is rotated horizontally around the axis while being fixed and is movable in the axial direction. And a mandrel provided on one side of the material fixing part, and a mandrel provided around one side of the material fixing part. A rotating mandrel rotating part, a disc-shaped bending sleeve that is inserted through the mandrel and pivoted about the mandrel, and a bending convex part protruding from the bending sleeve; A bending sleeve rotating portion for rotating the bending sleeve about an axis, and a mandrel revolution that allows the mandrel to rotate in a vertical plane around the extension of the horizontal axis of the material stationary space of the material fixing portion. Part A mandrel horizontal moving part configured to move the mandrel parallel to the horizontal axis of the material fixing space part of the material fixing part, and a mandrel provided on one side of the material fixing part on the side opposite to the mandrel. -The wire stored in the stand passes through the correction part via the feed-out guide, and is supplied to the material fixing part via the material guiding part and the material cutting part by the feeding part, and then the material is cut after being fixed. A material supply unit.

The above includes the following aspects.
In the material fixing portion, a cylindrical body having an insertion groove that is deep in the radial direction from the outer periphery and long in the axial direction, and is supported so as to be rotatable about a horizontal axis, A short cylinder having a slit that fits and is inserted into the insertion groove, and a clamp that penetrates the cylindrical body and the short cylinder in the radial direction and presses the material inserted into the insertion groove, A material rotating unit that rotates the material fixed to the cylindrical body around a horizontal axis.

  In the mandrel revolving part, at a position sandwiching the mandrel with respect to the material fixing part, it is supported so as to be rotatable in a vertical plane around the extension of the horizontal axis of the material stationary space part of the material fixing part. A disk, a rotating member of the disk, and an end surface of the disk, extending in parallel on an extension of a horizontal axis of a material placement space portion of the material fixing portion, and a horizontal member provided with the mandrel.

  Further, in the mandrel revolving part, the mandrel is supported at a position sandwiching the mandrel with respect to the material fixing part so as to be rotatable in a vertical plane around the extension of the horizontal axis of the material stationary space part of the material fixing part. A disk, a rotating part of the disk, an end surface of the disk, a horizontal member extending in parallel with an extension of a horizontal axis of a material stationary space part of the material fixing part, and the mandrel installed thereon, and the hollow horizontal member And a long arm parallel to the axis of the mandrel.

  The horizontal member is provided with a housing or the horizontal member is hollow so that it also serves as a housing, and the cylindrical portion of the bending sleeve is rotatably held inside, and a bending convex portion is provided on the outer surface of the disk portion located outside. In the bending sleeve rotating portion, a passive gear is fixed to the end of the bending sleeve cylindrical portion, a driving gear meshing with the driving gear is fixed to the driving shaft, and the driving shaft is rotatably held. A bending motor is connected to the outer end of the housing, and at the bending sleeve 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.

  Also, the horizontal member is provided with a housing, or the horizontal member is hollow so that it also serves as a housing, and inside the cylindrical portion of the bending sleeve, the mandrel shaft is rotatably held, and the disk is located outside. A bending guide portion projects from the outer surface of the portion, and in the mandrel rotating portion, a passive gear is fixed to the shaft portion of the mandrel, a driving gear meshing with the shaft is fixed to the driving shaft, and the driving shaft is rotatable. However, a bending motor is connected to the outer end portion of the housing, and 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 at the mandrel advance / retreat portion.

  In the horizontal movement part of the mandrel, a guide rail that slidably supports the disk and the main body, a nut member attached to the main body, and screwed to the nut member, the material stationary space part of the material fixing part A horizontal feed screw rod extending in parallel on the extension of the horizontal axis.

  Further, in the mandrel horizontal moving part, a horizontal feed screw rod that is rotatably provided on the horizontal material of the mandrel revolving part and extends in parallel on the extension of the horizontal axis of the material stationary space part of the material fixing part, A saddle having a screw engaged with the feed screw rod and guided slidably on the horizontal member, and a rotating portion of the feed screw rod.

  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 Y2-Y2 principal part sectional drawing of FIG. 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 a mandrel horizontal movement part. It is Y7-Y7 sectional drawing of FIG. It is sectional drawing of the other Example of the installation place of a bending process part. It is Y9-Y9 sectional drawing of FIG. It is a partial cross section front view of the other Example of this invention. It is a principal part enlarged view of FIG. It is X12-X12 principal part sectional drawing of FIG.

An embodiment of the present invention will be described below with reference to the drawings.
In FIG. 1, the outline of the bending apparatus is as follows. The material fixing part 10 provided to fix the linear material W in a state of being horizontally tilted to the upper end of the support column 1 and the material projecting horizontally from the material fixing part are guided by the processing part, and the projecting Two sets of bending portions F1 having a mandrel 20 having an axis perpendicular to the material, and the mandrel can be swiveled in a vertical plane around the extension of the horizontal axis of the material fixing space portion of the material fixing portion. The two sets of mandrel revolving parts 80 and two sets of mandrel horizontal moving parts 90 adapted to move the mandrel parallel to the horizontal axis of the material stationary space part of the material fixing part. The two sets are arranged symmetrically with respect to the material fixing portion 10.

  1 and 2, in the material fixing portion 10, a cylindrical body 11 having an insertion groove 11a deep in the radial direction from the outer periphery and long in the axial direction so that the material can be inserted / removed, and the length of the cylindrical body A short cylindrical body 12 having a slit 12a that is fitted and inserted into the outer periphery at the center in the length direction, and a pressing piece 13a penetrates in the radial direction of the columnar body and the short cylindrical body, and the insertion groove And a clamp 13 adapted to press the material inserted into the. The pressing piece 13 a is operated by a piston cylinder 13 b attached to the upper surface of the short cylindrical body 12. Further, a slit 1 a following the insertion groove is also provided in the support column 1.

  In addition, a material rotating part 110 is provided in the material fixing part 10. That is, the cylindrical body 11 is supported so as to be rotatable around a horizontal axis. And the material rotation part is connected to the edge part of the said cylindrical body 11, and the fixed material is rotated around a horizontal axis line. In the material rotating portion, a passive gear 111 is fixed to one projecting portion of the cylindrical body 11, and a driving gear 112 that meshes with the passive gear 111 is supported by a second support column 113 protruding upward from the upper portion of the support column 1, and is rotated. It is rotated by the dynamic motor 114. Here, slits connected to the insertion groove 11 a are also provided in the passive gear 111 and the second support column 113 so that the material can be inserted and removed.

  In the mandrel revolving part 80 in FIG. 1, in a vertical plane centering on the extension of the horizontal axis of the material stationary space part of the material fixing part at a position sandwiching the mandrel 20 with respect to the material fixing part 10. A disk 81 that is rotatably supported by the main body 84, a rotating part 82 of the disk, and an end surface of the disk extend in parallel on the extension of the horizontal axis of the material stationary space part of the material fixing part, and the mandrel And a horizontal member 83 provided with a bending portion F1 including the same. 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 consists of a horizontal feed screw rod 93 extending in parallel on the extension of the horizontal axis of the material placement space portion of the fixed portion 10 and a horizontal movement motor 94 connected thereto.

  As shown in FIG. 5, in the right mandrel, the exposed end surface of the mandrel guide 21 has a guide groove 21a along the diameter and a clockwise direction (plus) along the circumferential direction at the other end. And the guide surfaces 21b and 21c are continuously formed in the range of plus / 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 fixed to the material fixing part protrudes rightward through the guide groove 21a, and is bent with the nose parts 21d and 21e as a support by the rotation of the bending convex part 53 described below. The left mandrel is symmetrical to the above.

  The surface of the bending sleeve large-diameter disk portion 51 is flush with the extension of the horizontal axis of the material stationary space portion of the material fixing portion, and the end surface of the mandrel 20 protrudes from the surface of the bending sleeve large-diameter disk portion 51; The material guide groove 21 a is located in the path of the material W. 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 wire rod W is fixed to the material fixing portion 10. 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 the clamp of the material fixing portion 10 is released to take out the processed 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 rotation unit 110 is operated in advance to rotate the material 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. In the mandrel revolving part 80, a long arm 85 is rotatably supported parallel to the axis of the mandrel 20 between the tip of the hollow horizontal member 83 and the end of the cylindrical body 11 of the material fixing part 10. ing. A mandrel horizontal moving unit 190 is provided inside the horizontal member 83.

  In the mandrel horizontal moving unit 190, a horizontal feed screw rod 191 is rotatably provided inside the horizontal member 83 of the mandrel revolving unit 80 and between the disk 81 and the arm 85, and the material fixing unit It extends in parallel on the extension of the horizontal axis of the material placement space. The saddle 192 has a screw that engages with the feed screw rod 191 and is slidably guided by the horizontal member. The rotating portion 193 of the feed screw rod is in the main body 84 on the back side of the disk 81, and is provided on the inner wall 84a at a position concentric with a pair of pulleys 193a, a timing belt 193b engaged therewith, and the center of rotation of the disk. And a horizontal movement motor 193c. When the horizontal movement motor 193c is driven, the feed screw rod 191 rotates and the mandrel 20 moves.

FIGS. 8 and 9 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 hollow and serves as a housing, and most of it is accommodated inside. is there. 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.

  10, FIG. 11 and FIG. 12 show still another embodiment in which a long material is cut and bent. That is, the material supply unit 200 is installed on the side opposite to the mandrel 20 provided on one side of the material fixing unit 10. The material supply unit passes the wire stored in the wire coil stand V1 through the feeding guide V2 through the correction unit V3, and the feed unit V4 passes through the material guide unit 202 and the material cutting unit 210 to fix the material. The material is supplied to the portion 10 and fixed, and then the material is cut.

  In the material cutting part 210, the fixed blade 212 is provided in the head main body 201, and the movable blade 213 is slidably provided in the groove of the fixed blade. Both the blades are provided with guide holes 212a and 213a. With the material passing therethrough, the movable blade 213 moves and the wire W is cut. Here, the material supply unit 200 is described in an open publication (Japanese Patent Laid-Open No. 2002-45941) previously filed by the applicant for development.

  In FIG. 10, a horizontal moving portion 290 is provided in the material fixing portion 10 so that the material placement space portion of the material fixing portion 10 can move on the extension of the horizontal axis. This includes a guide rail 291 that slidably supports the column 1, a nut member 292 attached to the column, and a horizontal axis of the material stationary space portion of the material fixing portion 10 that is screwed to the nut member. And a horizontal feed screw rod 293 extending in parallel with the extension of the motor and a horizontal movement motor 294 connected thereto.

  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 part 1 support 1a insertion groove 2 housing 10 material fixing part 11 cylinder 11a insertion groove 12 short cylindrical body 12a slit 13 clamp 13a pressing piece 13b piston cylinder 20 mandrel 21 material guide part 22 shaft part 30 Mandrel rotation part 31 Passive gear 32 Drive gear 33 Drive shaft 34 Motor 40 Mandrel advance / retreat part 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 advancement / retraction part 71 Clipping member 72 Piston cylinder 80 Mandrel revolution part 81 Disk 82 Disc rotation part 82a Passive internal gear 82b Drive gear 82c Revolution motor 83 Horizontal material 84 Main body 84a Inner wall 85 Arm 90 Mandrel horizontal moving part 91 Guide rail 92 Nut member 93 Feed screw rod 94 Horizontal moving motor 110 Material rotating part 111 Passive gear 111a Insertion groove 112 Drive gear 113 Second support pillar 114 Material rotating motor 120 Mandrel 121 Material guiding part 122 Shaft part 130 Mandrel rotation part 131 Passive gear 132 Drive gear 133 Drive shaft 134 Motor 140 Mandrel advancement / retraction part 141 Holding member 142 Piston cylinder 150 Bending sleeve 151 Disk part 152 Cylindrical part 153 Bending convex part 160 Bending sleeve rotating part 161 Passive gear 162 Drive gear 163 Drive shaft 164 Bending motor 170 Mandrel advance / retreat part 171 Nipping member 172 Piston cylinder 183 Horizontal material 190 Mandrel horizontal movement part 191 Guide rail 192 193 feed screw rod 193a pulley 193b timing belt 193c horizontal movement motor 194 horizontal movement motor

Claims (11)

A material fixing portion provided at the upper end of the support column so as to rotate around the axis line in a state where the linear material is tilted horizontally and fixed,
A material projecting horizontally from the material fixing part is guided by a processing part, has an axis perpendicular to the projecting material, and a mandrel provided on one or both sides of the material fixing part,
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 mandrel revolving part capable of swiveling in a vertical plane around the extension of the horizontal axis of the material stationary space part of the material fixing part;
A bending apparatus comprising: a mandrel horizontal movement unit configured to move the mandrel parallel to a horizontal axis of a material placement space part of the material fixing part.
A material fixing portion provided at the upper end of the support column so as to be rotated around the axis in a state where the linear material is horizontally tilted and fixed, and to be movable in the axial direction,
The material projecting horizontally from the material fixing part is guided by the processing part, has an axis perpendicular to the projecting material, and a mandrel provided on one side of the material fixing part,
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 mandrel revolving part capable of swiveling in a vertical plane around the extension of the horizontal axis of the material stationary space part of the material fixing part;
A mandrel horizontal moving part configured to move the mandrel parallel to the horizontal axis of the material stationary space part of the material fixing part,
Installed on the opposite side of the mandrel provided on one side of the material fixing part,
The wire stored in the wire coil stand is passed through the correction section via the feed-out guide, supplied to the material fixing section via the material guiding section and the material cutting section by the feeding section, and after fixing, the material is cut. A bending apparatus comprising the material supply unit.
In the material fixing part,
A cylindrical body that has a long insertion groove deep in the radial direction from the outer periphery and long in the axial direction, and is supported rotatably around a horizontal axis;
A short cylindrical body having a slit fitted in and inserted into the outer periphery at the center in the longitudinal direction of the cylindrical body, and having a slit matching the insertion groove;
A clamp that penetrates the cylindrical body and the short cylindrical body in the radial direction and presses the material inserted into the insertion groove;
The bending apparatus of Claim 1 or 2 provided with the material rotation part which rotates the material fixed to the said cylindrical body around a horizontal axis line.
In the mandrel revolution part,
A disk supported rotatably in a vertical plane around the extension of the horizontal axis of the material stationary space portion of the material fixing portion at a position sandwiching the mandrel with respect to the material fixing portion;
The rotating part of the disk,
4. The bending apparatus according to claim 1, further comprising: a horizontal member extending in parallel on an extension of a horizontal axis of a material placement space portion of the material fixing portion from the end face of the disk and provided with the mandrel.
In the mandrel revolution part,
A disk supported rotatably in a vertical plane around the extension of the horizontal axis of the material stationary space portion of the material fixing portion at a position sandwiching the mandrel with respect to the material fixing portion;
The rotating part of the disk,
From the end face of the disk, extending in parallel on the extension of the horizontal axis of the material stationary space portion of the material fixing portion, a horizontal member installed with the mandrel,
4. A bending apparatus according to claim 1, 2 or 3, wherein said arm is rotatably supported between a tip of said hollow horizontal member and an end of a cylindrical body of said material fixing portion, and is a long arm parallel to the axis of said mandrel. .
The horizontal member is provided with a housing or the horizontal member is hollow so that it also serves as a housing, and the cylindrical portion of the bending sleeve is rotatably held inside, and a bending convex portion is provided on the outer surface of the disk portion located outside. Protruding,
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,
The bending apparatus according to claim 4 or 5, wherein 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 in 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 on the inside thereof, and the disk portion located on the outside is provided. A bending guide is projected on the outer surface,
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 4, 5 or 6, wherein in the mandrel advance / retreat portion, a power advance / retreat means connected to a pinching member for sandwiching a side surface of the passive gear is provided on the bottom surface of the housing.
In the mandrel horizontal moving part,
A guide rail that slidably supports the disk and the body;
A nut member attached to the main body;
The bending apparatus according to claim 1, 2 or 3, further comprising: a horizontal feed screw rod that is screwed onto the nut member and extends in parallel with an extension of a horizontal axis of the material stationary space portion of the material fixing portion.
In the mandrel horizontal moving part,
A horizontal feed screw rod provided rotatably on the horizontal member of the mandrel revolving part and extending in parallel with the extension of the horizontal axis of the material stationary space part of the material fixing part;
A saddle having a screw engaged with the feed screw rod and guided slidably on the horizontal member;
The bending part according to claim 1, 2 or 3 and a rotating part of the feed screw rod.
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 any one of the preceding claims, further comprising a bending sleeve advance / retreat portion that advances and retracts the bending sleeve in the axial direction.

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