JP5451833B2 - Steel pipe processing equipment - Google Patents

Description

  The present invention relates to processing equipment for various steel pipes such as a square steel pipe and a round steel pipe.

Conventionally, a square steel pipe cold-formed by, for example, a cold forming machine has a square steel pipe clamping means and a pair of left and right processing means sandwiching the conveyance path in a part of a conveyance path for conveying the square steel pipe in the length direction. Are processed by a processing facility provided. That is, before receiving the square steel pipe, the clamping means is set to the non-clamping posture, and in this state, the square steel pipe is transported in the length direction on the transport path and stopped at a predetermined position. Then, in a state where the square steel pipe is fixed at a predetermined position by the clamp means, the processing means is operated to cut the square steel pipe.
A lower end portion of the clamp means is provided with a means for removing the tip-removed steel pipe from which the tip portion has been removed. The means for taking out the tip-removed steel pipe is composed of a movable body provided with a clamp device and a movable device that moves the movable body in the direction along the carry-out path and in the vertical direction. The clamp device is a cylinder device. And clamps the side located at the bottom of the square steel pipe.

JP 2010-105122 A

  Since the tip removal steel pipe is short, in the state where only the side located at the lower part is clamped, it is impossible to stably cut the tip removal steel pipe by operating the processing means. There is a problem that it cannot be taken out stably.

  The object of the present invention is to solve such a problem, and it is possible to stably cut the tip-removed steel pipe, and to provide a steel pipe treatment facility that can stably take out the cut tip-removed steel pipe. Is to provide.

According to the first aspect of the present invention, the steel pipe moving means is provided in the upper side portion of the conveyance path for conveying the steel pipe in the length direction, and the steel pipe processing means and the steel pipe clamping means are provided in the lower side portion. The means includes a cutting blade for cutting the steel pipe conveyed by the steel pipe moving means and clamped by the steel pipe clamping means into a circular shape, and a tip-removing steel pipe cut by the steel pipe processing means is provided on the lower side portion of the steel pipe clamping means. In the steel pipe processing equipment provided with the tip removal steel pipe take-out means to take out,
The tip-removing steel pipe take-out means includes an upper clamping device that clamps the upper side of the tip-removing steel pipe by the upper clamping body and the lower clamping body, and a lower side of the tip-removing steel pipe by the upper clamping body and the lower clamping body. And a lower clamping device.

  In the invention according to claim 2, the upper clamping device includes an upper clamping body in which a convex claw portion is formed at the lower end portion and a lower clamping body in which a convex claw portion is formed at the upper end portion. The upper sandwiching body and the lower sandwiching body sandwich the upper side part with the claw part of the upper sandwiching body and the claw part of the lower sandwiching body engaged with the cut end of the upper side part. .

In the first aspect of the present invention, the tip removal steel pipe take-out means clamps the upper side part and the lower side part of the tip removal steel pipe in two states, that is, the upper side part is clamped by the upper clamping device. At the same time, the tip removal steel pipe can be stably cut while the lower side portion is clamped by the lower clamping device , and the cut tip removal steel pipe can be stably taken out.

  In the second aspect of the invention, the convex claw portion formed at the front end portion of the lower sandwiching body and the convex claw portion formed at the top end portion of the upper sandwiching body are cut at the upper side portion. Since the cut is widened by being engaged with the cut, the burden on the cutting blade when cutting the steel pipe can be reduced.

1 is a plan view of a steel pipe processing facility according to a first embodiment of the present invention . FIG. It is a side view of the steel pipe moving means parts in the processing equipment of the same steel. It is a top view of the principal part of the supply means in the processing equipment of the steel pipe. It is a side view of the transfer apparatus part of the supply means in the processing equipment of the steel pipe. It is a side view of the pressing device part of the supply means in the processing equipment of the steel pipe. It is a top view of the steel pipe moving means part in the processing equipment of the steel pipe. It is a front view of the steel pipe moving means part in the processing equipment of the steel pipe. It is a partially notched front view of the principal part of the steel pipe moving means part in the processing equipment of the steel pipe. It is a cross-sectional top view of the steel pipe moving means part in the processing equipment of the steel pipe. It is a partially notched top view of the process means part in the processing equipment of the steel pipe. It is a front view of the process means part in the processing equipment of the steel pipe. It is a vertical side view of the processing means part in the processing equipment of the steel pipe. It is a partially notched top view of the overload buffer means part in the processing equipment of the steel pipe. It is a cross-sectional top view of the principal part of the process means part in the processing equipment of the steel pipe. It is a partially notched side view of the extraction means part of the tip removal steel pipe in the processing equipment of the steel pipe. It is a cross-sectional view of the taking-out means part of the tip removal steel pipe. It is a cross-sectional view of the movable device of the take-out means part of the same tip removal steel pipe. It is a top view of the taking-out means part of the tip removal steel pipe. It is a partially cutaway side view of the lower clamping device and the upper clamping device of the take-out means portion of the tip removal steel pipe. It is the partially notched side view of the taking-out means part of the tip removal steel pipe which the same lower clamping apparatus and upper clamping apparatus clamped the steel pipe. It is a cross-sectional view of the lower clamping device and the upper clamping device of the take-out means portion of the tip removal steel pipe. It is a partially notched top view of the lower clamping apparatus and upper clamping apparatus of the extraction means part of the tip removal steel pipe. The clamp means part of the processing equipment of the steel pipe is shown, (a) is a front view at the time of non-clamping, (b) is a front view at the time of clamping. It is a partially cutaway front view of the principal part at the time of the cutting start in the processing equipment of the steel pipe. It is a partially cutaway front view of the principal part at the time of completion | finish of a cutting | disconnection in the processing equipment of the steel pipe.

Below, Embodiment 1 of this invention is demonstrated based on a figure as a state employ | adopted as the process of a square steel pipe.
1-4, the conveyance path | route 1 which conveys the square steel pipe (an example of a steel pipe) 300 to a length direction is a long idle roller conveyor apparatus (an example of a conveyor apparatus) 2 and a short drive roller conveyor apparatus (an example). An example of a conveyor device 7). A steel pipe moving means 130 is provided on the upper side portion (starting end portion) of the conveyance path 1, and a pair of left and right steel pipe processing means 21A sandwiching the conveyance path 1 is provided on the lower side portion (terminal portion) of the conveyance path 1. , 21B and steel pipe clamping means 111A, 111B disposed in the direction of the transport path 1 with these steel pipe processing means 21A, 21B in between. Further, a carry-out path 15 that is continued to the end of the conveyance path 1 and carries out the treated steel pipe (product) 300A in the length direction is formed by a long drive roller conveyor device (an example of a conveyor device) 16 and In the lower portion of the steel pipe clamping means 111B, there is provided a taking-out means 230 for removing the tip-removed steel pipe (processed product) 300C. The square steel pipe 300 is formed in a regular square shape by four side portions 300a and four corner portions (R-shaped corner portions) 300b, and one side portion 300a has a butt weld portion (seam weld portion) 300c. Is formed.

  The idle roller conveyor device 2 has a pair of left and right conveyor frames 3, which are in the form of I-shaped rails (laterally H-shaped rails) and are integrated via a plurality of stand bodies 4. And installed on the floor. And the idler roller 5 which made the roller axis | shaft the left-right direction (lateral direction orthogonal to the direction of the conveyance path | route 1) on the both conveyor frames 3 in the several places of the direction of the conveyance path | route 1 via the support body 6 respectively. Arranged. An example of the idle roller conveyor device 2 is configured by the above 3-6 and the like.

  10 to 12, the driving roller conveyor device 7 is divided and provided corresponding to the portions of the steel pipe clamping means 111A and 111B. A roller shaft is provided on a base frame portion of a main body (described later). Drive rollers 8A, 8B having a width in the left-right direction are arranged via supports 9A, 9B. Drive rollers 11A and 11B are disposed via swing supports 10A and 10B at locations corresponding to the steel pipe processing means 21A and 21B, and the drive rollers 11A and 11B are connected to the drive rollers 8A and 8B. Cylinder devices 12A and 12B for swinging the swinging supports 10A and 10B are provided so as to have the same raised position and the lowered position just below the drive rollers 8A and 8B. The upper drive rollers 8A and 11A are linked and connected to a common motor 13 via a chain transmission mechanism and a gear transmission mechanism. The lower drive rollers 8B and 11B are configured to be driven in conjunction with the drive roller conveyor device 16 that forms the carry-out path 15. An example of the drive roller conveyor device 7 is configured by the above 8A, 8B to 13 and the like.

  1 to 5, positioning means 181 for positioning in the width direction of the square steel pipe 300 supplied on the idle roller conveyor device 2 from a supply means (described later) is provided on the other side portion of the conveyance path 1. Are provided at a plurality of locations (for example, 4 locations) in the direction of the transport path 1. That is, each positioning means 181 has the same configuration, and a mounting base 182 is provided on the conveyor frame 3 on the other side. On the mounting base 182, a left and right guide shaft 183 is provided via a pair of holding members 184, and a slide body 185 that is externally fitted to the guide shaft 183 and guided is provided. A support frame 186 is provided on the slide body 185, and a positioning roller 187 is provided on the support frame 186 so as to be freely rotatable via a vertical roller shaft. Further, a manual operation plate 188 is fixed on the support frame 186.

  A plurality of locking holes 189 are formed in the mounting base 182 in a staggered pattern at predetermined intervals in the left-right direction, and the slide body 185 is formed in any of the locking holes 189 when it is slid. A communication hole 190 that allows communication is formed. Then, a locking pin 191 that can be engaged from above is provided from the communicating hole 190 to the locking hole 189, and in order to confirm the engagement position, a cover pin provided on the front and rear surfaces of the slide body 185 is provided. A proximity sensor 193 group capable of detecting the detection body (dog) 192 is disposed on the sensor bracket 194 from the conveyor frame 3 side. A proximity sensor 195 that can detect the position of the square steel pipe 300 is provided on the front and rear surfaces of the support frame 186.

  Therefore, the locking pin 191 is pulled out, the slide body 185 is slid by manual operation with the manual operation plate 188 gripped, and the communication hole 190 is communicated with the intended locking hole 189, and then the communication hole 190 is opened. By engaging the locking pin 191 with the locking hole 189, the position of the positioning roller 187 can be adjusted according to the width of the square steel pipe 300 to be handled. Thereby, the side surface of the square steel pipe 300 supplied from the supply means onto the idle roller conveyor device 2 is brought into contact with the positioning roller 187 group, and the width center of the square steel pipe 300 is matched with the center of the conveyor width direction. Can be positioned. An example of the positioning means 181 is configured by the above-described 182 to 195 and the like.

  In FIG. 1 to FIG. 5, a supply means 200 for storing the square steel pipes 300 in parallel and supplying them one by one onto the idle roller conveyor device 2 is provided outside one side of the conveying path 1. Yes. That is, a pair of support rail bodies 201 that are orthogonal to the direction of the transport path 1 are provided at a predetermined interval in the direction of the transport path 1. A steel pipe feeder 202 is provided along each of the support rail bodies 201. Here, the both steel pipe feeding devices 202 are reciprocally moved in synchronization with the guide frame body 203 provided along the support rail body 201, the moving body 204 supported and guided by the guide frame body 203, and both the moving bodies 204. A steel pipe lifting body that can be moved up and down by lifting means is provided on the upper part of the moving body 204.

  Further, a transfer device 211 for moving the square steel pipe 300 supported between the support rail bodies 201 onto the transfer route 1 is provided between the guide frame bodies 203 on the transfer route 1 side. The idle roller 216 group can be moved up and down and can be moved back and forth with respect to the conveyance path 1. That is, an elevating body 214 is provided on the base frame 212 via a four-link mechanism 213, and the four-link mechanism 213 is operated between the link portion of the four-link mechanism 213 and the base frame 212. A cylinder device 215 is provided. On the elevating body 214, a horizontal moving body 217 provided with a group of idler rollers 216 is provided, and a cylinder device 218 for moving the horizontal moving body 217 out and back with respect to the transport path 1 is provided. .

  Further, a pressing device 221 for pressing the square steel pipe 300 on the transport path 1 against the positioning means 181 side is provided outside the both support rail bodies 201 on the transport path 1 side. That is, a plate body 222 is provided outside the support rail body 201, and a lateral movement frame body 223 is provided outside the plate body 222, and the lateral movement frame body 223 is moved in and out of the conveyance path 1. A cylinder device 224 to be moved is provided between the plate body 222. A pressing body 226 is swingably provided on the lateral movement frame body 223 via a lateral pin 225 along the conveyance path 1. At that time, the pressing body 226 automatically swings so that the rear side is in a lower position due to a change in the weight of the front and rear with respect to the lateral pin 225, and the front end side comes into contact with the stopper body 227, The upper surface 226a is inclined, and the push surface 226b at the front end is configured to be positioned above the upper surface of the idle roller 5 group. An example of the transfer device 211 is configured by the above 212 to 218, etc., an example of the pressing device 221 is configured by 222 to 227, and an example of the supply unit 200 is configured by 201 to 227 and the like.

1 and 10 to 14, a main body 20 for arranging the steel pipe processing means 21A, 21B and the steel pipe clamping means 111A, 111B includes a pair of base frame portions 20a in the front-rear direction (conveying direction), and these Between a pair of left and right vertical frame portions 20b disposed on the base frame portion 20a, a horizontal frame portion 20c provided between upper portions of the vertical frame portions 20b in the left-right direction, and an outer end portion of the base frame portion 20a. The lower front / rear frame portion 20d and the like are provided in a frame shape. A central portion of the main body 20 is formed with a through portion 20e through which the transport path 1 is inserted by a base frame portion 20a, both vertical frame portions 20b, and a horizontal frame portion 20c. On the base frame 20a,
The drive roller conveyor device 7 is provided.

  The steel pipe clamping means 111A and 111B are arranged in a pair in the direction of the conveyance path 1 with the steel pipe processing means 21A and 21B in the middle, and the left and right clamping devices 112 and the upper and lower clamping devices 120 provided on the main body 20 side, respectively. It consists of. That is, the left and right clamping device 112 includes a pair of left and right cylinder devices 113 attached to the vertical frame portion 20b with the piston rods facing each other, and a push / pull body 114 connected to the piston rods of these cylinder devices 113, A movable body 115 connected to the inner end portion of the push-pull body 114, a guide body 116 having an inner end portion connected to the movable body 115 and supported and guided toward the vertical frame portion 20b, and the movable body 115 The clamp body 117 is provided on the inner surface side so as to be slidable in the direction of the conveyance path 1, and the sliding cylinder device 118 is provided on the movable body 115 side to slide the clamp body 117. The vertical clamp device 120 includes a cylinder device 121 attached to the horizontal frame portion 20c with the piston rod facing downward, a pressing body 122 connected to the piston rod of the cylinder device 121, and the like.

  According to the steel pipe clamping means 111A and 111B configured as described above, the cylinder device 113 is extended and the clamp body 117 is brought into contact with both side surfaces of the square steel pipe 300, so that the left and right clamping devices 112 cause the square steel pipe 300 to move to both sides. The cylinder device 121 is extended and moved, and the pressing body 122 is brought into contact with the upper surface of the square steel tube 300, so that the square rollers are driven by the drive rollers 8 </ b> A and 8 </ b> B of the drive roller conveyor 7 and the vertical clamp device 120. 300 can be clamped from above and below. Further, by sliding the clamp body 117 with respect to the movable body 115 by the sliding cylinder device 118, the clamped square steel pipe 300 can be moved in the direction of the conveyance path 1. An example of the steel pipe clamping means 111A and 111B is configured by the above 112-122 and the like.

  The steel pipe processing means 21A and 21B are laterally movable bodies 22A and 22B provided on the main body 20 side so as to be laterally movable in the approaching and separating direction with respect to the transport path 1, and the main body 20 side and the laterally movable bodies 22A and 22B. Laterally moving devices 24A and 24B provided between them, longitudinally moving bodies 40A and 40B provided so as to be movable up and down relative to the laterally moving bodies 22A and 22B, and longitudinally moving with these laterally moving bodies 22A and 22B. Elevating devices 42A and 42B provided between the bodies 40A and 40B, and the longitudinally moving bodies 40A and 40B are provided so as to be rotatable around the longitudinal axes 59A and 59B along the transport path 1. The blade holders 60A, 60B and the cutting blades provided on the blade holders 60A, 60B side through the drive shafts 80A, 80B, 84A, 84B along the longitudinal axes 59A, 59B, respectively. Blade bodies 82A, 82B and groove machining blade bodies 86A, 86B, and rotations interlocked with drive shafts 80A, 80B, 84A, 84B of these cutting blade bodies 82A, 82B and groove machining blade bodies 86A, 86B. It is comprised from the drive parts 90A and 90B.

  That is, the steel pipe processing means 21A and 21B are supported and guided by the base frame portion 20a and the horizontal frame portion 20c that are long in the left-right direction through the LM guides 23A and 23B, respectively, so It is provided as movable. The lateral movement devices 24A and 24B provided between the main body 20 side and the lateral movement bodies 22A and 22B have base plate bodies 25A and 25B arranged on the base frame portion 20a of the main body 20, Screw bodies (ball screws or the like) 26A, 26B are arranged on the base plate bodies 25A, 25B with the length direction thereof being a direction along the approaching / separating direction, and both ends are supported by the bearing members 27A, 27B. Thus, the base plate bodies 25A and 25B (on the main body 20 side) are rotatably provided.

  On the outer end side of the base plate bodies 25A and 25B (on the main body 20 side) there are provided motors 28A and 28B (which are an example of a forward and reverse rotation drive unit and are composed of a DC motor or the like) 28A and 28B. The output shafts 28A and 28B and the screw bodies 26A and 26B are interlocked and connected via the winding transmission mechanisms 29A and 29B. And nut bodies 30A and 30B screwed to the screw bodies 26A and 26B are provided, and the nut bodies 30A and 30B are attached to the movable bodies 31A and 31B. Here, the movable bodies 31A and 31B are supported and guided through the LM guides 32A and 32B on the outer surfaces of the laterally moving members 22a and 22b that are continuously provided outward from the laterally moving bodies 22A and 22B, thereby approaching and separating. It is provided so as to be movable in the direction.

  Between the movable bodies 31A, 31B and the lateral movement bodies 22A, 22B in the lateral movement devices 24A, 24B, overload buffering means 33A, 33B for buffering an overload during the lateral movement of the lateral movement bodies 22A, 22B are provided. Is provided. In other words, the overload buffering means 33A, 33B are a pair of movable bodies 31A, 31B and the laterally movable bodies 22A, 22B provided in a state where the movable bodies 31A, 31B are arranged in the approaching / separating direction. The neutral maintaining hydraulic cylinder devices 34A, 34B, 35A, 35B and one (outside) neutral maintaining hydraulic cylinder devices 35A, 35B are parallel to each other between the movable bodies 31A, 31B and the laterally moving bodies 22A, 22B. The buffer hydraulic cylinder devices 36A and 36B are provided. When the neutral maintaining hydraulic cylinder devices 34A, 34B, 35A and 35B act to return from the overload state to the neutral state, the buffer hydraulic cylinder devices 36A and 36B are provided. Is configured to buffer. The above-described 34A, 34B to 36A, 36B, etc. constitute an example of the overload buffer means 33A, 33B, and 25A, 25B-36A, 36B etc. constitute an example of the lateral movement devices 24A, 24B.

  The vertical moving bodies 40A and 40B are provided so as to be movable up and down by being supported and guided by the LM guides 41A and 41B with respect to the horizontal moving bodies 22A and 22B. The elevating and lowering devices 42A and 42B provided between the laterally moving bodies 22A and 22B and the longitudinally moving bodies 40A and 40B are motors (forward / reverse) that can be driven forward / reversely and are provided above the laterally moving bodies 22A and 22B. An example of the rotation drive unit is composed of a DC motor or the like.) 43A, 43B, screw bodies 45A, 45B interlocked and coupled to the downward output shafts of the motors 43A, 43B via transmission mechanisms 44A, 44B, The nuts 46A and 46B are fixed to the longitudinally moving bodies 40A and 40B, and the screw bodies 45A and 45B are screwed together. The upper and lower ends of the screw bodies 45A, 45B are rotatably supported on the longitudinally moving bodies 40A, 40B via bearing members 47A, 47B. The above 43A, 43B to 47A, 47B and the like constitute an example of the lifting devices 42A, 42B.

  Elevating and lowering balance devices 50A and 50B are provided in parallel with the elevating and lowering devices 42A and 42B. In other words, chain rings 52A and 52B are provided on the upper portions of the laterally movable bodies 22A and 22B so as to be freely rotatable via the holding frame bodies 51A and 51B, and the chains 53A and 53B hung on the chain rings 52A and 52B are provided. The free ends are connected to the longitudinally moving bodies 40A and 40B via connecting members 54A and 54B. The base ends of the chains 53A and 53B are connected to the piston rods of the balancing cylinder devices 55A and 55B provided on the lateral moving bodies 22A and 22B. The above 51A, 51B to 55A, 55B, etc. constitute one example of the lifting balance devices 50A, 50B.

  Therefore, the horizontal moving bodies 22A and 22B are moved horizontally by the horizontal moving devices 24A and 24B, and the vertical moving bodies 40A and 40B are moved up and down by the lifting and lowering devices 42A and 42B, whereby the vertical moving bodies 40A and 40B are transported. It is configured to be able to move laterally and move up and down with respect to the path 1 in the approaching and separating direction. Then, by operating the balancing cylinder devices 55A and 55B in accordance with the lifting and lowering movements of the lifting and lowering devices 42A and 42B, the vertical moving bodies 40A and 40B can be lifted and lowered in a balanced manner.

  The blade holders 60A and 60B are provided on the conveying path 1 side of the longitudinally moving bodies 40A and 40B. That is, the blade holders 60A and 60B include horizontally-oriented cylindrical rotating parts 61A and 61B, holding parts 62A and 62B connected to one side surface of the rotating parts 61A and 61B, and connecting parts 63A and 63B connected to the other side surface. The rotating portions 61A and 61B are fitted into the rotation support members 48A and 48B on the longitudinal moving bodies 40A and 40B, and are supported rotatably around the longitudinal axial centers 59A and 59B. On the side of the longitudinally moving bodies 40A and 40B, rotational movement devices 65A and 65B for rotating the blade holders 60A and 60B and rotational positioning devices 70A and 70B for positioning the rotated blade holders 60A and 60B. And are provided.

  That is, the longitudinally moving bodies 40A and 40B are provided with drive portions 66A and 66B made of a motor, a speed reducer, etc., and the front and rear output shafts 67A and 67B and the connecting portions 63A and 63B are connected to the chain transmission mechanism 68A. , 68B. The longitudinally moving bodies 40A and 40B are provided with cylinder devices 71A and 71B with the piston rods facing upward, and the rotation support members 48A and 48B side via link mechanisms 72A and 72B to which the piston rods are connected. The contact members 73A and 73B provided on the outer periphery of the rotary portions 61A and 61B are configured to be press-contacted and separated. The above-described 66A, 66B to 68A, 68B, etc. constitute an example of the rotational movement devices 65A, 65B, and 71A, 71B-73A, 73B etc. constitute an example of the rotational positioning devices 70A, 70B.

  Therefore, in a state where the contact members 73A and 73B are separated from the outer peripheral surfaces of the rotating portions 61A and 61B by the contraction movement of the cylinder devices 71A and 71B, the connecting portions are connected by the driving portions 66A and 66B via the chain transmission mechanisms 68A and 68B. By rotating 63A and 63B, the blade holders 60A and 60B can be rotated forward and backward in the form of 180 degrees around the longitudinal axis 59A and 59B. Then, the rotational positions can be positioned by the rotational positioning devices 70A and 70B by bringing the contact members 73A and 73B into pressure contact with the outer peripheral surfaces of the rotating portions 61A and 61B by the extending movement of the cylinder devices 71A and 71B.

  The holding portions 62A and 62B of the blade holders 60A and 60B include cutting-side drive shafts (an example of drive shafts) 80A and 80B and groove-side drive shafts (an example of drive shafts) 84A and 84B. The cutting-side drive shafts 80A and 80B and the groove-side drive shafts 84A and 84B are provided with bearings 81A, 81B, 85A, and 85B. It is rotatably supported via. Cutting blades 82A and 82B are attached to one ends of the cutting-side drive shafts 80A and 80B, and learning rollers 83A and 83B are provided so as to freely rotate by being distributed to both sides of the cutting blades 82A and 82B. ing. Further, at one end of the groove-side drive shafts 84A and 84B, groove processing blade bodies 86A and 86B are attached, and the learning rollers 87A and 87B are idled by being distributed to both sides of the groove processing blade bodies 86A and 86B. It is provided to roll freely. Here, the outer peripheral edges of the groove processing blades 86A and 86B have shapes having inclined blade surfaces (polishing surfaces) 86a and 86b on both the front and rear sides.

  Between the longitudinally moving bodies 40A and 40B and the blade holders 60A and 60B, the cutting-side drive shafts 80A and 80B of the cutting blades 82A and 82B and the grooves of the groove processing blades 86A and 86B are provided. Rotation drive units 90A and 90B that are linked to the side drive shafts 84A and 84B are provided. That is, the transmission shafts 91A and 91B are provided on the longitudinal axial centers 59A and 59B, and the transmission shafts 91A and 91B are rotatable relative to the blade holders 60A and 60B via the bearing members 92A and 92B. It is penetrated by.

  The output shafts 94A and 94B of the drive motors 93A and 93B provided on the vertical moving bodies 40A and 40B side, and the intermediate shaft provided rotatably on the vertical moving bodies 40A and 40B via bearing members 95A and 95B. 96A and 96B are linked and linked by belt transmission mechanisms 97A and 97B, and the intermediate shafts 96A and 96B and the other ends of the transmission shafts 91A and 91B are linked and linked by chain transmission mechanisms 98A and 98B. The drive gears 99A and 99B provided at one end of the transmission shafts 91A and 91B are provided on the cut-side passive gears 100A and 100B and the groove-side drive shafts 83A and 83B provided on the cut-side drive shafts 80A and 80B. It is always meshed with and interlocked with the groove-side passive gears 101A and 101B. The above 91A, 91B-101A, 101B, etc. constitute an example of the rotational drive units 90A, 90B.

  Therefore, the blade holders 60A and 60B are rotated 180 degrees forward and backward around the longitudinal axis 59A and 59B by the rotational movement devices 65A and 65B, and the rotational position is positioned by the rotational positioning devices 70A and 70B. Thus, the cutting blade bodies 82A and 82B and the groove processing blade bodies 86A and 86B can be replaced (alternatively) toward the square steel pipe 300. Then, by driving the rotation drive units 90A and 90B, the cutting blade bodies 82A and 82B and the groove processing blade bodies 86A and 86B are driven via the cutting side drive shafts 80A and 80B and the groove side drive shafts 84A and 84B. Can rotate.

  The above 22A, 22B to 101A, 101B, etc. constitute an example of the steel pipe processing means 21A, 21B. A discharge device 105 for receiving and discharging chips and the like is provided below both the steel pipe processing means 21A and 21B, and the discharge device 105 is configured by a belt conveyor type or the like.

  1, 2, and 6 to 9, the steel pipe moving means 130 includes a clamping device 131 that can clamp the side portion 300 a at the starting end portion of the square steel pipe 300 in the thickness direction, and a conveyance path through the clamping device 131. A moving device 151 that reciprocates in the direction of 1, and a measuring device 160 that measures a distance L between the starting end side surface 300d of the square steel pipe 300 that is sandwiched and moved and the processing position K of the steel pipe processing means 21A, 21B. Thus, when the measuring device 160 measures the set distance LX, the movement by the moving device 151 is stopped.

  That is, the clamping device 131 has a plate-like movable body 132, and the lower portion of the movable body 132 is positioned in the gap between the upper portions of the two conveyor frames 3. At the lower part of the movable body 132, a support roller 133 guided to the conveyor frame 3 side, a lift prevention roller 134, and a lateral guide roller 135 are provided so as to be freely rotatable at a plurality of locations. The idler roller conveyor device 2 is supported and guided on the conveyor frame 3 side so as to be movable in the direction of the conveyance path 1. A pair of left and right (two) plate bodies 132a are disposed on the movable body 132 so as to protrude toward the steel pipe processing means 21A and 21B.

  The movable body 132 is provided with a lower clamping body 136, an upper clamping body 140, a hydraulic cylinder device (an example of an approaching / separating device) 144, and the like. That is, the plate-like (one) lower sandwiching body 136 has the first horizontal axis 137 orthogonal to the direction of the transport path 1 in a state where the latter half is fitted between the pair of left and right plate bodies 132a. And is attached to the plate body 132a side so as to be swingable up and down. At this time, a spherical bearing 138 is fitted on the first horizontal shaft 137, and a lower sandwiching body 136 is fitted on the spherical bearing 138 so as to be rotatable within a certain range in the left-right direction. Further, the lower swing limit of the lower sandwiching body 136 is restricted by the stopper bodies 139 provided on both side surfaces of the intermediate portion of the lower sandwiching body 136 coming into contact with the upward surface of the plate body 132a.

  A pair of left and right (two) plate-like upper holding members 140 are provided, and the upper holding members 140 are positioned on both sides of the upper portion of the lower holding member 136, and the first horizontal shaft 137. The upper holding member 140 is attached to the lower holding member 136 so as to be swingable up and down. At this time, the spacer body 142 is interposed between the upper clamp members 140 so that the upper clamp members 140 are positioned outside the plate body 132a.

  The lower sandwiching body 136 and both upper sandwiching bodies 140 are disposed so as to protrude (toward) the steel pipe processing means 21A and 21B. An upward clamping portion 136 a is fixed to the protruding free end of the lower clamping body 136, and the downward clamping portion 140 a swings back and forth via the lateral pin 143 between the protruding free ends of both upper clamping bodies 140. It is provided freely. The hydraulic cylinder device 144 has a cylinder body 145 connected between the middle parts of the upper clamping body 140 and a downward piston rod 146 connected between the middle parts of the lower clamping body 136.

  A compression spring 147 is interposed between the lower sides of the plate body 132a and the lower sandwiching bodies 136 for returning rotation and maintaining neutrality. In addition, a detected body (sensor dog) 148 is provided on one side of the lower sandwiching body 136, and a proximity sensor 150 is provided on the upper sandwiching body 140 on one side via a bracket 149. Here, the proximity sensor 150 is configured to detect the detected object 148 when both of the holding bodies 136 and 140 are moved. One example of the holding device 131 is configured by the above 132 to 150 and the like.

  The moving device 151 is provided at a lower upper portion of the rotating shaft 153, a servo motor 152 with a speed reducer provided on the upper side of the movable body 132, a rotating shaft 153 linked to the downward motor shaft, and the rotating shaft 153. The drive gear (pinion) 154 and the rack 155 provided on the conveyor frame 3 on one side so that the drive gear 154 always meshes with each other. The lower end of the rotating shaft 153 is rotatably supported by an upper portion of a horizontal plate 132b provided at the lower part of the movable body 132. The lower plate portion and the middle portion of the horizontal plate 132b are provided with a driven gear (pinion) 156 that always meshes with the rack 155 and a guide roller 157 that abuts against one side smooth surface of the rack 155 so as to be freely rotatable. Yes. In addition, a stopper body 158 with which the rotating shaft 153 can come into contact is provided between the upper portions of the both conveyor frames 3, and the home position HP of the steel pipe moving means 130 is determined by this contact. The servo motor 152 is provided with a hydraulic pressure supply device 159. Therefore, the clamping device 131 can be reciprocated in the direction of the conveyance path 1 by forward / reverse driving of the servo motor 152. The above-described 152 to 159 and the like constitute an example of the moving device 151 that reciprocates the movable body 132.

  The measuring device 160 includes the servo motor 152 serving as a driving source for the moving device 151, a setting unit 161 for setting the measurement start position S according to the clamping position by the clamping device 131, and the square steel pipe 300 on the steel pipe processing means 21A and 21B side. An end face detection unit 175 for detecting the end face side face 300e, a servo mechanism (not shown), and the like. Then, by setting the measurement start position S by the setting unit 161, the forward movement of the clamping device 131 by the servo motor 152 is temporarily stopped and clamped, and then the measuring device 160 again sets the set distance LX by the servo motor 152. It is comprised so that it may move forward until it measures. Further, the measuring device 160 measures the set distance LX, stops the movement by the moving device 151, clamps the square steel pipe 300 by the steel pipe clamping means 111A, 111B, then opens the holding device 131 once, and again performs the holding operation. It is configured to let you.

  At that time, the setting unit 161 can abut on the push-pull body 165 provided on the movable body 132 side so as to be relatively movable in the direction of the conveyance path 1 with respect to the movable body 132 and the start end side end surface 300 d of the square steel pipe 300. A contact body 166 provided at the tip of the push-pull body 165, a biasing body 169 for projecting a contact surface 166a of the contact body 166 from a clamping position by the clamping device 131, and the biasing body 169. The detection body 170 is configured to detect that the push-pull body 165 has been retracted against this.

  That is, the plate body 162 in the direction along the transport path 1 is fixed to one side of the movable body 132 via the coupling body 163. Guide members 164 are provided at a plurality of locations (two locations) on one side of the plate body 162, and the rod-like push-pull body 165 is relatively movable in the direction of the conveyance path 1 while being supported and guided by the guide members 164. Is provided. A disc-like contact body 166 is provided at the tip (lower end) of the push-pull body 165, and the push-pull is pulled between the receiving body 167 on the contact body 166 side and the receiving body 168 on the plate body 162 side. A spring-like biasing body 169 is provided so as to be fitted on the body 165. In this case, when the push / pull body 165 is caused to project by the urging force of the urging body 169, the abutment surface 166a of the abutment body 166 is projected to the lower side with respect to the clamping position by the clamping device 131. ing.

The detection body 170 is configured by providing a front fiber sensor 172 and a rear fiber sensor 173 via a support member 171 on the upper side (rear side) of the plate body 162. Both fiber sensors 172 and 173 are configured to detect a rear end portion (detected portion) 165a of the push-pull body 165. At this time, when the push-pull body 165 is caused to project by the biasing force of the biasing body 169, the rear end portion 165a of the push-pull body 165 is not in front of the front fiber sensor 172 as shown in FIG. The detection position. Then, when the push-pull body 165 is retracted against the urging force of the urging body 169, the rear end 165a is detected by the front fiber sensor 172 and then detected by the rear fiber sensor 173. become. At this time, when the rear end portion 165a is detected by the front fiber sensor 172, the moving speed of the clamping device 131 by the servo motor 152 is switched to a low speed, and the rear end portion 165a is detected by the rear fiber sensor 173. Thus, the forward movement of the clamping device 131 is temporarily stopped and the clamping device 131 is moved.

  The end face detection unit (photoelectric sensor) 175 is disposed on the main body 20 side with a certain separation distance M on the upper side with respect to the processing position K. Here, both the fiber sensors 172 and 173, the proximity sensor 150, the end face detection unit 175, and the like are connected to a servo mechanism (control unit), and the servo mechanism is connected to a servo motor 152 and the like. In addition, the contact position of the contact body 166 is the lower side portion 300a, and is configured to be compatible with the square steel pipes 300 of all sizes. An example of the setting unit 161 is configured by the above 162 to 173 and the like.

  15 to 21, a take-out means 230 for a tip-removed steel pipe (processed product) 300 </ b> C is provided at the lower part of the lower steel pipe clamp means 111 </ b> B. Here, the take-out means 230 includes a movable body 231, a movable device 232 that moves the movable body 231 in the direction along the carry-out path 15, and a lower clamping device 233 and an upper clamping device 234 provided on the movable body 231. Has been.

  That is, the movable body 231 has a base frame 235 having a T-shaped cross section, and support rollers 237 connected by connecting shafts 236 are provided at two positions on the front and rear sides of the rising wall portion 235a of the base frame 235. Yes. On one surface of the rising wall portion 235a and below the support roller 237, a lifting prevention roller 239 is provided via a connecting shaft 238. The support roller 237 moves on the rail 240 installed on the upper surface side of the upper wall 3 a of the conveyor frame 3, and the lifting prevention guide roller 239 comes into contact with the lower surface side of the upper wall 3 a of the conveyor frame 3 to lift the movable body 231. To prevent.

  The movable device 232 is provided at the rear end portion of the base frame 235 of the movable body 231 and includes a servo motor 241. The servo motor 241 is mounted on a bracket 242 attached to the upper surface of the rear end of the upper wall portion 235 b of the base frame 235, and the output shaft 243 protruding downward from the servo motor 241 is connected to the rotary shaft 245 via the coupling 244. It is connected. The rotating shaft 245 is rotatably supported via a bearing 247 on a housing 246 that is bolted to the lower end of the bracket 242. A pinion 248 is attached to the lower end of the rotary shaft 245, and this pinion 248 is attached to the lower surface of the upper wall 3 a of the conveyor frame 3 and can be screwed into a rack 249 facing the direction of the conveyance path 1.

  The front portion of the base frame 235 is configured by only the rising wall portion 235a with the upper wall portion 235b cut away, and the lower clamping device 233 is installed on the rising wall portion 235a.

  The lower clamping device 233 includes a lower clamping body 250 and an upper clamping body 251. The lower clamping body 250 is formed in a flat plate shape, and is orthogonal to the direction of the transport path 1 with the central lower portion fitted between a pair of left and right plate bodies 252 attached so as to sandwich the rising wall portion 235a. It is attached to the plate body 252 side through a first horizontal axis 253 having a shape. A spherical bearing 254 is fitted on the first horizontal shaft 253, and the lower clamping body 250 is fitted on the spherical bearing 254 and is rotatable within a certain range in the left-right direction.

  The upper clamping body 251 includes two plate bodies 251a, and the upper center of the lower clamping body 250 is sandwiched between the two plate bodies 251a via a second horizontal axis 255 parallel to the first horizontal axis 253. And are attached to the lower clamping body 250 so as to be swingable up and down.

  The lower sandwiching body 250 and the upper sandwiching body 251 are disposed so as to protrude (toward) the steel pipe processing means 21A, 21B side. An upward clamping portion 256 that abuts the outer peripheral surface of the steel pipe is rotatable at a protruding free end of the lower clamping body 250 via a pin 258 to a plate 257 that is attached so as to sandwich the lower clamping body 250. It is attached. The horizontal pin 260 is inserted between the protruding free ends of the upper clamping body 251 with the downward clamping part 259 that contacts the inner peripheral surface of the steel pipe being sandwiched between the two plate bodies 251a constituting the upper clamping body 251. It is attached so that rotation is possible.

  A hydraulic cylinder device 261 is installed between the rear end portion of the lower sandwiching body 250 and the rear end portion of the upper sandwiching body 251. The hydraulic cylinder device 261 has a cylinder body 261a whose rear end is the rear end portion of the lower sandwiching body 250. The cylinder rod 261b is connected to the rear end portion of the upper clamping body 251. Note that stoppers 283 and 284 are provided in order to limit the opening of the lower clamping body 250 and the upper clamping body 251.

  The upper clamping device 234 is attached to the plate body 252 via the bracket 262. The bracket 262 has a gate shape opened downward, and is attached so as to sandwich the two plate bodies 252. A cylindrical round bar 263 whose axis is oriented in the vertical direction is attached to the upper part of the bracket 262, and an elevating body 264 that can be raised and lowered while holding the round bar 263 is attached to the round bar 263. ing. The elevating body 264 has an opening that opens in a U-shape, and an air cylinder 265 is attached to the opening. The upper clamping body 266 and the lower clamping body 267 constituting the upper clamping device 234 are attached to the air cylinder 265 while being guided by a guide bar 268 attached to the elevating body 264. The upper clamping body 266 is attached to the cylinder rod of the air cylinder 265, and the lower clamping body 267 is attached to the cylinder body of the air cylinder 265.

  A plurality of holes 269 are formed in the round bar 263 in the vertical direction, and an operator can fix the elevating body 264 to a predetermined hole 269 corresponding to the size of the steel pipe by using a fixing pin 270. . Convex claw portions 271 are formed at the lower end tip of the upper clamping body 266 and the upper end tip of the lower clamping body 267, and the claw portion 271 has a cutting blade body 82A for cutting a steel pipe on the upper side. When the cutting of the side portion 300a is finished, the side portion 300a is engaged with the cut end of the upper side portion 300a from both the upper and lower sides. The operation of the claw portion 271 will be described in detail later.

  The movable body 231 is provided with a push-pull body 272 that can move relative to the movable body 231 in the direction of the conveyance path 1. The push-pull body 272 is urged toward the end surface 300d of the square steel pipe 300 by a compression coil spring 274 that is an urging body accommodated in the casing 273, and can be brought into contact with the end surface 300d of the square steel pipe 300 at the tip. An abutment body 275 is provided. Two proximity switches 276 and 277 for detecting the rear end of the push / pull body 272 are provided on the rear side of the push / pull body 272, and the proximity switch 276 located on the front side with respect to the push / pull body 272. When the rear end of the push-pull body 272 is detected, the servo motor 241 starts decelerating, and when the proximity switch 277 located behind the push-pull body 272 detects the rear end of the push-pull body 272, the servo motor 241 stops.

  Note that a plurality of hole portions 269 formed in the round bar 263 are respectively provided with proximity sensors 278 so that any one of the proximity sensors 278 detects the fixing pin 270 inserted into the hole portion 269. Thus, the installation position of the upper clamping device 234 can be known.

A rubber packing 280 is attached to the inner surfaces of the two opposite sides 279 of the gate-shaped bracket 262, and the front end surface of the rubber packing 280 comes into contact with the two plate bodies 251 a constituting the upper clamping body 251. Yes. Further, a cable rack 281 is attached to the bracket 242 on which the servo motor 241 is mounted. The cable rack 281 is supported by support arms 282 and 283 attached to the bracket 242 and the main body 20. The above-described 231 to 283 and the like constitute an example of a take-out means 230 for the tip-removed steel pipe (processed product) 300C.

  1 and 16, a drive roller conveyor device 16 forming the carry-out path 15 includes a pair of left and right conveyor frames 17, a group of drive rollers 18 provided between the conveyor frames 17, a chain transmission mechanism and a gear transmission mechanism. The motor 19 group etc. which are interlockingly connected to the driving roller 18 group via the. Lower drive rollers 8B and 11B in the drive roller conveyor device 7 are linked to the drive roller conveyor device 16 side via a chain transmission mechanism and a gear transmission mechanism.

  A storage means 260 for receiving and storing the long processed steel pipe (product) 300 </ b> A, the short processed steel pipe (product) 300 </ b> B, and the tip removal steel pipe 300 </ b> C in parallel is provided outside one side of the carry-out path 15. Yes. That is, a narrow conveyor device 285 group for the long processed steel pipe 300A is provided on the lower side, a narrow conveyor device 286 group for the short processed steel pipe 300B is provided on the intermediate side, and the upper side is provided with the narrow side conveyor device 286 group. A wide conveyor device 287 for the tip removing steel pipe 300C is provided. Here, the narrow conveyor device 285 group, the narrow conveyor device 286 group, and the wide conveyor device 287 are of the drive type, and are arranged so that the conveying direction is orthogonal to the direction of the carry-out path 15.

Further, an extruding device 288 for transferring the long processed steel pipe 300A, the short processed steel pipe 300B and the tip removing steel pipe 300C on the driving roller conveyor device 16 onto the storage means 260 is provided at the other side portion of the carry-out path 15. Yes. That is, the cylinder device 289 is provided in the conveyor frame 17 at two locations (single location or multiple locations) in the direction of the carry-out path 15, and an extruded body 290 is provided between the piston rods of the cylinder devices 289 . The pusher 290 is configured to cross the drive roller conveyor device 16 from the other side to the one side by the extension movement of the cylinder device 289 . In addition, when the extrusion surface of the extrusion body 290 is formed by a roller group, the long processed steel pipe 300A and the short processed steel pipe 300B that are carried out through the carry-out path 15 can be guided. The above-described 285 to 287 and the like constitute an example of the storage unit 260, and 289 to 290 and the like constitute an example of the extrusion device 288.

Hereinafter, the operation in the first embodiment, that is, the operation of cutting the tip removing steel pipe 300C and taking out the cut tip removing steel pipe 300C will be described.
The square steel pipe 300 from the previous process (various forming machines) side is placed on the both support rail bodies 201 of the supply means 200 by transfer means (crane, forklift, etc.), and then both steel pipe feeding devices 202 are guided frame bodies 203. By supporting and guiding them in synchronization, the square steel pipe 300 group can be stored in parallel while being fed forward. That is, the square steel pipe 300 is lifted while being supported by the moving body 204 by raising the steel pipe lifting body, and after moving the moving body 204 to the transport path 1 side by the driving unit 205, the steel pipe lifting body is lowered. The square steel pipe 300 can be placed between the two support rail bodies 201.

  The (steel) square steel pipe 300 close to the conveyance path 1 can be supplied to the idle roller conveyor device 2 by the transfer device 211 and can be pressed against the positioning means 181 by the pressing device 221. At this time, in the transfer device 211, the elevating body 214 is lowered by the extension movement of the cylinder device 215, and the lateral movement body 217 is moved with respect to the transport path 1 by the contraction movement of the cylinder device 218 as shown in FIG. 3. By moving backward, the support surface by the idle roller 216 group is positioned on the side of the support rail body 201 and below the support surface of the support rail body 201. In the pressing device 221, as shown by the solid line in FIG. 3 or the solid line in FIG. 5, the lateral movement frame body 223 is moved away from the conveyance path 1 by the contraction movement of the cylinder device 224.

  In this state, when the square steel pipe 300 is moved to the conveyance path 1 side by the steel pipe feeding device 202, the lower part of the square steel pipe 300 comes into contact with the upper surface 226a of the pressing body 226, and the pressing body 226 is moved back and forth. It can be swung horizontally against the weight change, and can pass over the pressing body 226. Then, the square steel pipe 300 can be placed between the support rail bodies 201 (can be lowered). At this time, the pressing body 226 returns and swings in an inclined state so that the front end pressing surface 226b faces the side surface of the square steel pipe 300. .

  Next, the elevating body 214 is raised by the contraction movement of the cylinder device 215, whereby the square steel pipe 300 placed between the support rail bodies 201 can be lifted via the idler roller 216 group, and the cylinder device 218 As shown by the phantom line in FIG. 4, the rectangular steel pipe 300 can be positioned above the idle roller 5 group by projecting the laterally movable body 217 toward the conveyance path 1 side as shown by the imaginary line in FIG. Can be carried in. When the square steel pipe 300 comes into contact with the positioning roller 187 at the time of such loading, the idle roller 216 group rotates in contact with the downward surface of the square steel pipe 300, so that the projecting movement of the laterally movable body 217 is always smooth. Yes. After carrying in the intended state, the lifting and lowering body 214 is lowered as shown by the solid line in FIG. 4 by the extension movement of the cylinder device 215, so that the rectangular steel pipe 300 supported by the idler rollers 216 group is idled. It can be transferred to a group of 5 rollers. Then, the transfer device 211 can be returned to the initial state as shown by the solid line in FIG. 3 by moving the laterally movable body 217 backward from the conveyance path 1 side by the contraction movement of the cylinder device 218.

  Next, the lateral movement frame body 223 is moved closer to the transport path 1 by the extension movement of the cylinder device 224. As a result, as shown by the phantom line in FIG. 5, the pressing surface 226b of the pressing body 226 comes into contact with the side surface of the square steel pipe 300, and the square steel pipe 300 is laterally pressed. In this state, the rectangular steel pipe 300 can be positioned in the width direction by being sandwiched between the positioning roller 187 and the pressing body 226. Then, the lateral movement frame 223 is moved backward from the conveyance path 1 side by the contraction movement of the cylinder device 224, whereby the pressing device 221 can be returned to the initial state as shown by the solid line in FIG.

  The steel pipe moving means 130 is applied to the square steel pipe 300 that has been positioned in the width direction in this way. That is, the steel pipe moving means 130 moves the clamping device 131 backward (reversely moves) in the direction of the transport path 1 by the reverse operation of the moving device 151 and positions it at the home position HP. The push-pull body 165 is caused to project by the urging force of the body 169 so that the rear end portion 165a of the push-pull body 165 is not in front of the front fiber sensor 172 as shown in the solid line in FIG. The detection position. The reversing clamping device 131 extends the hydraulic cylinder device 144 to swing the lower clamping member 136 downward around the first horizontal axis 137 until it is regulated by the stopper body 139. The upper clamping body 140 can be swung upward around the second horizontal axis 141. Thus, the upward holding portion 136a and the downward holding portion 140a can be moved away from each other, and the proximity sensor 150 puts the detected body 148 into a non-detection state.

  In such a state, the proximity sensor 195 of the positioning means 181 detects the square steel pipe 300 positioned in the width direction, and the detection signal is input to the servo mechanism (controller). As a result, the clamping device 131 is moved forward (forward movement) in the direction of the transport path 1. That is, by driving and rotating the drive gear 154 engaged with the rack 155 by the positive drive of the servo motor 152, a moving force can be applied to the movable body 132, and the movement of the movable body 132 at this time is performed by the support roller 133. The driven gear 156 group is meshed with the rack 155 while being guided to the conveyor frame 3 side through the group, the lifting prevention roller group 134 and the lateral guide roller 135 group, and the guide roller 157 group is on one side of the rack 155. It can always be performed stably while being rotated against the smooth surface.

  By such advancement, first, the contact surface 166a of the contact body 166 contacts the start end side end surface 300d, and thereafter, the urging force is applied in a state where the push-pull body 165 is integrated (fixed) to the square steel pipe 300. The movable body 132 is moved forward against the body 169. When the front end of the downward holding portion 140a reaches the vicinity of the start end side surface 300d, the rear end portion 165a of the push / pull body 165 is detected by the front fiber sensor 172 and input to the servo mechanism, so that the servo motor The moving speed of the clamping device 131 by 152 can be switched to a low speed. Then, the rear end portion 165a is detected by the rear fiber sensor 173 and input to the servo mechanism, so that the measurement start position S can be set by the setting unit 161 and the distance L from the measurement start position S to the processing position K can be set. Then, the forward drive of the servo motor 152 is stopped, and the forward movement of the clamping device 131 is temporarily stopped. At this time, the upward clamping part 136 a is opposed to the downward surface of the square steel pipe 300 from below, and the downward clamping part 140 a is positioned so as to protrude into the square steel pipe 300.

  When the rear end 165a of the push-pull body 165 described above is detected by the rear fiber sensor 173, the hydraulic cylinder device 144 is contracted by another instruction signal from the servo mechanism side, whereby the lower clamping body 136 is moved. Can be swung upward around the first horizontal axis 137 and the upper clamping body 140 can be swung downward around the second horizontal axis 141. As a result, the upward holding portion 136a and the downward holding portion 140a are moved closer to each other, and as shown by the phantom lines in FIG. 2, between the free ends of the holding members 136 and 140, that is, the upward holding portion 136a and the downward holding portion. By 140a, the side part 300a of the square steel pipe 300 can be clamped in the thickness direction. At this time, the proximity sensor 150 is in a detection state of the detected object 148, and by this detection, it can be confirmed that the square steel pipe 300 is clamped with respect to the side portion 300a.

  In addition, when clamping between the free ends of both the clamping bodies 136 and 140, the upper clamping body 140 moves around the second horizontal axis 141 with respect to the thickness change of the side portion 300a according to the type of the square steel pipe 300. And the downward holding portion 140a swings around the lateral pin 143, so that it is possible to cope with it automatically. Further, when the square steel pipe 300 is formed, the spherical portion 138 is inclined with respect to the first horizontal axis 137 by the spherical bearing 138 with respect to the inclination in the left-right direction (width direction) and the thickness change in the left-right direction. When the sandwiching body 136 rotates within a certain range in the left-right direction, that is, as shown by the phantom line in FIG. 8, both the sandwiching bodies 136, 140 are within the certain range in the left-right direction with respect to the first horizontal axis 137. By rotating, it can be dealt with automatically, and at that time, return rotation and neutral maintenance can be dealt with by the compression spring 147. By these things, the clamping in the thickness direction of the side part 300a by both the clamping bodies 136 and 140 can always be performed stably and firmly.

  As described above, after the clamping to the side portion 300a of the square steel pipe 300 by the clamping device 131 is confirmed by the proximity sensor 150, the square steel pipe 300 is moved to the steel pipe clamping means 111A and 111B side. That is, by re-driving the servo motor 152, the clamping device 131 is moved forward (forward movement) in the direction of the conveyance path 1, and the square steel pipe 300 is pushed and moved through the clamping device 131.

As shown in FIG. 23A, the cylinder device of the left and right clamping device 112 is used in the steel pipe clamping means 111A and 111B during the supply movement of the square steel pipe 300 by the steel pipe moving means 130, that is, before the processing operation of the square steel pipe 300. 113 is contracted and clamp body 1
17 is moved away, and the cylinder device 121 of the upper and lower clamp device 120 is contracted and the presser body 122 is moved upward, whereby both the steel pipe clamp means 111A and 111B are brought into an unclamped posture. In both steel pipe processing means 21A and 21B, as shown in FIG. 24 , the cutting blade bodies 82A and 82B are directed toward the conveying path 1 by the rotation of the blade holding bodies 60A and 60B, and in one steel pipe processing means 21A, While moving the vertical moving body 40A up and down, the other steel pipe processing means 21B raises the vertical moving body 40B and further moves the horizontal moving bodies 22A and 22B in the approaching direction with respect to the transport path 1. Further, the swinging supports 10A and 10B are swung by the cylinder devices 12A and 12B so that the driving rollers 11A and 11B are set at the raised positions similar to the driving rollers 8A and 8B.

  In this state, the square steel pipe 300 is moved in the length direction on the transport path 1 by the steel pipe moving means 130 as described above, and is thus transported to the steel pipe clamp means 111A, 111B side on the idle roller conveyor device 2. Then, in FIG. 1, first, the end face detection unit 175 detects the end side end face 300e of the square steel pipe 300, and the moving distance O and the separation distance M from the measurement start position S of the steel pipe moving means 130 at this time are subtracted from the distance L. Thus, that is, as [LMO = Lα], the uneven length Lα of the square steel pipe 300 can be measured by the measuring device 160. Further, after the square steel pipe 300 is moved and its end side end face 300e passes the processing position K, the measuring device 160 adds the long LA of the long processed steel pipe 300A and the short LB of the short processed steel pipe 300B. When the set distance LX is measured, that is, when [LX = LA + LB] is measured, the movement by the moving device 151 is stopped.

  Next, as shown in FIG. 23B, clamping is performed by the steel pipe clamping means 111A and 111B. That is, by extending the cylinder device 113 of the left and right clamp device 112, the clamp body 117 can be brought into contact with both side surfaces of the square steel pipe 300 to clamp the square steel tube 300 from both sides. By extending 121, the pressing body 122 can be lowered and brought into contact with the upper surface of the square steel pipe 300, and the square steel pipe 300 can be clamped from above and below between the drive rollers 8A and 8B of the drive roller conveyor 7. Then, as shown by the phantom lines in FIG. 12, the swinging supports 10A and 10B are swung by the contraction movements of the cylinder devices 12A and 12B, and the driving rollers 11A and 11B are lowered directly below the driving rollers 8A and 8B. As a position, the location corresponding to the steel pipe processing means 21A, 21B is opened.

  Thus, after clamping by the steel pipe clamp means 111A and 111B, the clamping apparatus 131 is moved open. That is, by extending the hydraulic cylinder device 144, the lower holding member 136 is swung downward, and the upper holding member 140 is swung upward to move the upward holding portion 136a and the downward holding portion 140a away from each other. .

  As described above, the steel pipe processing means 21A and 21B are operated and the tip is cut and removed in a state where the square steel pipe 300 is fixed at a predetermined position by the steel pipe clamping means 111A and 111B. That is, by driving the drive motors 93A and 93B of the rotation drive units 90A and 90B, the intermediate shafts 96A and 96B are rotated via the belt transmission mechanisms 97A and 97B, and the transmission shafts are transmitted via the chain transmission mechanisms 98A and 98B. 91A and 91B are driven to rotate. Further, the cutting-side drive shafts 80A and 80B are rotated via the driving gears 99A and 99B and the cutting-side passive gears 100A and 100B, so that the cutting blade bodies 82A and 82B are driven and rotated. The rotation of the transmission shafts 91A and 91B also rotates the groove-side drive shafts 84A and 84B via the drive gears 99A and 99B and the groove-side passive gears 101A and 101B. The cutting blades 86A and 86B are also driven and rotated simultaneously.

  In this state, the cutting blades 82A and 82B are moved laterally and moved up and down. That is, first, the motors 28A and 28B of the lateral movement devices 24A and 24B are driven to rotate the screw bodies 26A and 26B. At this time, the screw bodies 26A and 26B are attached to the nut bodies 30A and 30B on the side of the lateral movement bodies 22A and 22B. By being screwed together, the laterally movable bodies 22A and 22B can be laterally moved in the separating direction with respect to the transport path 1. Then, as shown by the phantom line in FIG. 25, the tip of one cutting blade 82A is opposed to the upper corner portion 300b from above and the tip of the other cutting blade 82B is the other lower corner. It is assumed that 300b faces from below.

  Next, the motors 43A and 43B of the elevating devices 42A and 42B are driven to rotate the screw bodies 45A and 45B. At this time, the screw bodies 45A and 45B are screwed into the nut bodies 46A and 46B on the longitudinally moving bodies 40A and 40B side. By being combined, the vertically movable bodies 40A and 40B can be moved up and down. That is, by lowering one vertical moving body 40A, the cutting blade body 82A can be moved downward together with the blade holding body 60A and the like. It can cut | disconnect sequentially from the upper corner part 300b to the side part 300a of one side part. Further, by raising the other vertical moving body 40B, the cutting blade body 82B can be moved up together with the blade holding body 60B and the like, so that the tip of the cutting blade body 82B that is rotationally driven is moved to one side. Cut sequentially from the lower corner 300b to the side 300a on one side. In such cutting by lifting and lowering by operating the lifting and lowering devices 42A and 42B, one cutting blade body 82A cuts one lower corner portion 300b, and the other cutting blade body 82B is the other upper portion. It is stopped by cutting the corner 300b. The state at this time is shown by a solid line in FIG.

  In this way, the lateral movement units 22A and 22B are driven by moving the lateral movement units 24A and 24B, and the vertical movement units 40A and 40B are driven and the vertical movement units 40A and 40B are moved up and down. The pair of cutting blades 82A and 82B that are rotationally driven are moved in the same direction (left rotation direction) around the square steel pipe 300 by the combined action with the action, and as shown in FIG. 300 tips can be cut. In addition, when cutting by moving both cutting blades 82A and 82B laterally and moving up and down, the learning rollers 83A and 83B move while abutting against the outer surfaces of the side portion 300a and the corner portion 300b, Thereby, the cutting positions (cutting postures) by the cutting blades 82A and 82B can be made suitable, and damage to the cutting blades 82A and 82B can be reduced.

  Then, the cut tip-removed steel pipe (processed product) 300 </ b> C is taken out to the carry-out path 15. At this time, when the lower steel pipe clamp means 111B is operated due to the irregular length Lα of the square steel pipe 300 and the removal length LC is long and the lower steel pipe clamp means 111B is operated as shown in FIG. After that, the tip-removing steel pipe 300 </ b> C is carried out by the drive roller conveyor devices 7 and 16, and is positioned on the carry-out path 15 so as to face the wide conveyor device 287.

  When the removal length LC is short and it is difficult to operate the lower steel pipe clamp means 111B, the upper steel pipe clamp means 111A is operated and the take-out means 230 is operated. That is, the movable device 232 positions the lower clamping device 233 and the upper clamping device 234 at the lower end of the tip removing steel pipe 300C. Then, the hydraulic cylinder device 261 installed between the rear end portions of the upper clamping body 251 and the lower clamping body 250 of the lower clamping device 233 is contracted to tilt the upper clamping body 251 upward and swing downward. The body 250 is tilted and swung downward. Further, the lifting body 264 holding the round bar 263 of the upper clamping device 234 is moved to a suitable position according to the shape of the square steel pipe 300 and fixed using the fixing pin 270, and the air cylinder 265 is extended. The upper holding body 266 and the lower holding body 267 are opened.

  Then, the servo motor 241 is driven to move the movable body 231 forward, the lower clamping device 233 covers the lower side portion 300a of the lower end of the tip removal steel pipe 300C, and the upper clamping device 234 lowers the tip removal steel pipe 300C. Covers the upper edge side 300a. Further, the hydraulic cylinder device 261 of the lower clamping device 233 is extended to clamp the lower side portion 300a via the downward clamping portion 259 of the upper clamping body 251 and the upward clamping portion 256 of the lower clamping body 250. Further, the air cylinder 265 of the upper clamping device 234 is contracted to clamp the upper side portion 300a with the claw portion 271 of the upper clamping body 266 and the claw portion 271 of the lower clamping body 267 (see FIG. 19).

  In this state, after the cutting blade body 82A cuts the upper side portion 300a and the cutting blade body 82B cuts the lower side portion 300a (the state indicated by the phantom line in FIG. 25), the hydraulic cylinder device 261 is moved. The air cylinder 265 is expanded and contracted, and the clamped state of the lower side 300a and the upper side 300a is released. Then, in a state where the servo motor 241 is driven and the movable body 231 is moved forward, the hydraulic cylinder device 261 of the lower clamping device 233 is extended to move the downward clamping portion 259 of the upper clamping body 251 and the lower clamping body 250. The lower side portion 300a is clamped via the upward clamping portion 256. Furthermore, the upper side portion 300a can be clamped via the upper clamping body 266 and the lower clamping body 267 by contracting the air cylinder 265 of the upper clamping device 234. At this time, as shown in FIG. 20, the lower surface of the upper sandwiching body 266 and the upper surface of the lower sandwiching body 267 are in contact with the upper side portion 300a, and the claw portion 271 formed at the lower end of the lower sandwiching body 266 is The claw portion 271 formed on the top end portion of the lower clamping body 267 is engaged with the cut edge of the upper side portion 300a where the cutting blade body 82A has been cut.

  Thus, the lower side 300a of the steel pipe is clamped by the lower clamping device 233, the upper side 300a of the steel pipe is clamped by the upper clamping device 234, and the claw 271 of the upper clamping body 266 and the lower clamping body In a state where the claw portion 271 of the 267 is engaged with the cut edge of the upper side portion 300a, the steel pipe processing means 21A and 21B continue to cut the tip removing steel pipe 300C. The tip removing steel pipe 300C cut by this is held on the take-out means 230 side.

  Then, by moving the movable body 231 backward by reverse driving of the servo motor 241, the tip removal steel pipe 300C having a short removal length LC can be stably carried out as shown by the phantom line in FIG. Above, it can be positioned opposite the wide conveyor device 287. Subsequently, the upper side clamping body 251 and the lower side clamping body 250 are released from the lower side portion 300a by the contraction movement of the hydraulic cylinder device 261, and the air cylinder 265 is extended by the extension movement of the upper side clamping body 266 and the lower side clamping body 267. The upper side 300a is held by the above. Thus, even if the removal length LC is a short tip removal steel pipe 300C, the removal means 230 can stably carry it out from the processing position K.

  As described above, the tip removal steel pipe 300C that has been cut by operating the lower steel pipe clamp means 111B with a long removal length LC, or the tip removal steel pipe 300C that has been taken out by the removal means 230 with a short removal length LC, It is positioned on the path 15 opposite to the wide conveyor device 287. The tip-removing steel pipe 300C is pushed onto the wide conveyor device 287 by an extruding body 290 that moves across the drive roller conveyor device 16 by the extension movement of the cylinder device 289, and is conveyed by the wide conveyor device 287 to be stored. Will be.

  In this way, groove processing is performed on the cut-side end surface 300f of the square steel pipe 300 from which the tip removing steel pipe 300C has been removed. That is, first, the clamp body 117 is moved by a small amount (retracted) by the operation of the sliding cylinder device 118 in the upper steel pipe clamping means 111A, so that the cutting end surface 300f is easily positioned. Note that the vertical clamp device 120 moves open before moving a small amount, and moves after moving a small amount.

  Next, after the blade holders 60A and 60B are moved slightly apart from the state shown by the solid line in FIG. 25, the rotational movement devices 65A and 65B are first operated with the rotational positioning devices 70A and 70B opened. The blade holders 60A and 60B are rotated 180 degrees around the longitudinal axis 59A and 59B, and the cutting blades 82A and 82B and the groove processing blades 86A and 86B are exchanged (change the orientation). Then, the groove processing blades 86A and 86B are directed to the cutting end face 300e (conveyance path 1) side. Then, the rotational positions of the blade holders 60A and 60B are positioned by the rotational positioning devices 70A and 70B. Next, after the blade holders 60A and 60B are moved slightly closer to the left and right, the up and down movement and the lateral movement of the groove processing blades 86A and 86B are opposite to those of the cutting blades 82A and 82B described above. Do in the direction. In this way, groove processing can be performed on the cut-side end surface 300f of the square steel pipe 300, and thus a groove 300g can be formed at the tip portion.

  In addition, the learning rollers 87A and 87B abut on the outer surfaces of the side portion 300a and the corner portion 300b when the groove processing is performed by laterally moving or elevating both the edge processing blades 86A and 86B. Accordingly, the machining position (machining posture) by the groove working blade bodies 86A and 86B can be made suitable, and damage to the groove working blade bodies 86A and 86B can be reduced.

  Thereafter, the laterally moving bodies 22A and 22B are returned to their original positions (home positions) in both the steel pipe processing means 21A and 21B. Further, by reverse operation of the sliding cylinder device 118 in the upper steel pipe clamp means 111A, the clamp body 117 is moved to a lower level by a small amount, and the cutting side end face 300f is returned to the original position.

  Then, after the steel pipe clamping means 111A, 111B are opened, etc., they are conveyed on the carry-out path 15 by the driving conveying force of the driving roller conveyor devices 7, 16 and the pushing moving force by the steel pipe moving means 130, and have been processed long. The steel pipe 300A is positioned to face the narrow conveyor device 285 group, and the short processed steel pipe 300B is positioned to face the narrow conveyor device 286 group. The long processed steel pipe 300A and the short processed steel pipe 300B are placed on the narrow conveyor device 285 group or the narrow conveyor by the extruded body 290 that moves across the drive roller conveyor device 16 by the extension movement of the cylinder device 289. It is pushed onto the device 286 group and is transported and stored by the narrow conveyor device 285 group or the narrow conveyor device 286 group.

In the first embodiment described above, the rectangular steel pipe 300 is processed, but cutting and groove processing on a round steel pipe (an example of a steel pipe) can be similarly performed.
In this way, the steel pipe moving means 130 is arranged on the upper side portion of the conveyance path 1 for conveying the steel pipe in the length direction.
Are provided, and the steel pipe processing means 21A, 21B and the steel pipe clamping means 1 are provided on the lower side portion.
11A and 111B are provided, and the steel pipe processing means 21A and 21B are provided with cutting blades 82A and 82B for cutting the steel pipes conveyed by the steel pipe moving means 130 and clamped by the steel pipe clamping means 111A and 111B in a ring shape. In the steel pipe processing equipment provided with the tip removal steel pipe take-out means for taking out the tip removal steel pipe 300C cut by the steel pipe treatment means 21A, 21B at the lower side portion of the steel pipe clamp means 111A, 111B, the tip removal steel pipe take-out means is:
An upper clamping device 234 that clamps the upper side 300a of the tip removing steel pipe 300C by the upper clamping body 266 and the lower clamping body 267, and a lower clamping that clamps the lower side 300a by the upper clamping body 251 and the lower clamping body 250. Since the apparatus 233 is provided, the tip removal steel pipe take-out means sandwiches the upper side 300a and the lower side 300a of the tip removal steel pipe 300C, that is, holds the upper side 300a in the upper part. The tip removal steel pipe 300C can be stably cut while being clamped by the device 234 and the lower side portion 300a is clamped by the lower clamping device 233 , and the cut tip removal steel pipe 300C is stably taken out. be able to.

  Further, the upper clamping device 234 includes an upper clamping body 266 in which a convex claw portion 271 is formed at the lower end portion and a lower clamping body 267 in which a convex claw portion 271 is formed at the upper end portion. The upper clamping body 266 and the lower clamping body 267 are configured such that the claw portion 271 of the upper clamping body 266 and the claw portion 271 of the lower clamping body 267 are engaged with the cut edge of the upper side portion 300a. Therefore, the burden on the cutting blades 82A and 82B for cutting the steel pipe can be reduced.

1 Conveyance path 7 Drive roller conveyor device (conveyor device)
15 Unloading path 16 Drive roller conveyor device (conveyor device)
21A, 21B Steel pipe processing means 82A, 82B Cutting blade bodies 111A, 111B Steel pipe clamping means 130 Steel pipe moving means 230 Extraction means 233 Lower clamping device 234 Upper clamping device 266 Upper clamping body 267 Lower clamping body 271 Claw portion 300 Square steel pipe (steel pipe) )
300a Side 300C Tip removal steel pipe (processed product)

Claims (2)

A steel pipe moving means is provided in the upper part of the conveying path for conveying the steel pipe in the length direction, and a steel pipe processing means and a steel pipe clamping means are provided in the lower part, and the steel pipe processing means is conveyed by the steel pipe moving means. A cutting blade body for cutting the steel pipe clamped by the steel pipe clamping means into a ring shape is provided, and a tip removing steel pipe taking out means for taking out the tip removing steel pipe cut by the steel pipe processing means is provided on the lower side portion of the steel pipe clamping means. Steel pipe processing equipment,
The tip-removing steel pipe take-out means includes an upper clamping device that clamps the upper side of the tip-removing steel pipe by the upper clamping body and the lower clamping body, and a lower side of the tip-removing steel pipe by the upper clamping body and the lower clamping body. A steel pipe processing facility comprising a lower clamping device.   The upper clamping device includes an upper clamping body in which a convex claw portion is formed at the lower end portion and a lower clamping body in which a convex claw portion is formed at the upper end portion. The sandwiching body is characterized in that the upper side part is sandwiched in a state where the claw part of the upper side clamping body and the claw part of the lower side clamping body are engaged with the cut end of the upper side part. The steel pipe processing facility described.

Images