CN115351146A - Pipeline bending machine - Google Patents

Abstract

The utility model relates to a pipeline field of bending the technique especially relates to a pipeline bender, and it includes frame, two shaping subassemblies that are used for shaping steel pipe U-shaped pipe portion of bending and the subassembly of bending that is used for bending the steel pipe both ends, the shaping subassembly sets up in the shaping seat of frame and is used for the drive to take shape a pivoted shaping driving piece including rotating, the shaping driving piece sets up in the frame, the outer wall that takes shape the seat and be on a parallel with the axis of rotation includes the shaping face and dodges the face, the arc surface form structure is personally submitted in the shaping and set up the race that encircles the extension of shaping face the central axis, the shaping face is located shaping face and rotates the inboard in route, the subassembly of bending rotates respectively and sets up in the frame. Convenience when this application can effectual optimization is unloaded optimizes the efficiency of production.

Description

Pipeline bending machine

Technical Field

The application relates to the field of pipeline bending technology, in particular to a pipeline bending machine.

Background

Pipes are widely used in various fields because of their excellent mechanical strength and cost performance. In particular applications, pipes are often used as channels for transporting materials as well as structural support members. In the field of furniture in particular, steel tubes are often used as one of the components of the support frame of furniture, in particular the structural frame of a sofa.

However, because of the structural requirements of furniture, it is often necessary to use U-shaped steel tubes as components of the structural frame. In the prior art, in order to manufacture a U-shaped steel pipe, bending is often adopted. The bending equipment for the U-shaped steel pipe in the prior art mainly comprises a first base arranged on a rack, a bending plate arranged on the rack in a rotating mode and a second base used for limiting the rotation of the steel pipe, the second base is arranged on the lateral portion of the first base, an arc surface used for forming the bending portion of the steel pipe is formed on one side, facing the bending plate, of the first base, the rotating center of the bending plate coincides with the central axis of the arc surface of the first base, and a groove structure with a cross section in the shape of an arc is formed in the second base, the first base and the surface, in contact with the steel pipe, of the bending plate, so that the bending direction and the angle of the steel pipe are limited, and the possibility that the steel pipe deflects and drops in the bending process is reduced.

When bending is carried out, the steel pipe is clamped among the first base, the bending plate and the second base, the steel pipe is clamped in the groove structures of the first base, the bending plate and the second base, and then the bending plate is rotated, so that the steel pipe can be bent to form an L-shaped steel pipe; and then moving the steel pipe again to enable the rest position of the steel pipe to be bent to be arranged corresponding to the first base, and then rotating the bending plate again to form the U-shaped steel pipe.

But at the in-process of actual production manufacturing, because the steel pipe needs bend twice, and the steel pipe card is located the groove structure in, the steel pipe is at the in-process of bending, the cross section profile that leads to the position of steel pipe being bent and kink to take place deformation, can make the steel pipe combine inseparabler with the inner wall of groove structure relatively, at the in-process of carrying out the dismouting steel pipe, can be because the restriction of groove structure, the mode that makes the installation of steel pipe can only slide through the axial is blocked and is located the groove structure inboard, thereby can restrict the production efficiency of U-shaped pipe fitting.

Disclosure of Invention

In order to facilitate unloading, optimize the production efficiency of U-shaped steel pipe, this application provides a pipe bending machine.

The application provides a pipeline bender adopts following technical scheme:

the utility model provides a pipeline bender, includes frame, two shaping subassemblies that are used for shaping steel pipe U-shaped pipe portion of bending and the subassembly of bending that is used for bending the steel pipe both ends, shaping subassembly sets up in the shaping seat of frame and is used for the drive to take shape a pivoted shaping driving piece including rotating, the shaping driving piece sets up in the frame, the outer wall that takes shape a parallel with the axis of rotation includes the shaping face and dodges the face, the shaping is personally submitted the arc surface form structure and is seted up the race that extends around the shaping face the central axis, the shaping face is located shaping face rotation path's inboard, the subassembly of bending rotates respectively and sets up in the frame.

Through adopting above-mentioned technical scheme, at the in-process of the steel pipe of bending, after bending the steel pipe through the subassembly of bending, when needing to lift the steel pipe off, only need the shaping driving piece control to take shape the seat and rotate, make the profile break away from the steel pipe through the pivoted mode, and make and dodge the face towards the steel pipe, thereby make the steel pipe can take shape the seat relatively and break away from, and do not need external force to make the steel pipe break away from, with the steel pipe card after reducing the bending locate the possibility in race, thereby can effectually optimize the convenience that the steel pipe takes off the material, optimize the efficiency of production.

Optionally, the shaping seat sets up in the shaping axle and the overcoat of frame and can dismantle the shaping lantern ring of connecting in the shaping axle including rotating, the shaping face, dodge face and race are seted up in the week side outer wall of shaping lantern ring, the drive end in shaping driving piece is connected to the shaping axle.

By adopting the technical scheme, when steel pipes with different bending radii need to be bent, the steel pipes with different bending radii can be bent by only disassembling the forming lantern ring and replacing the corresponding forming lantern ring, so that the steel pipes with different bending radii can be adapted to the purpose of conveniently disassembling the steel pipes.

Optionally, the assembly of bending is provided with two, the assembly of bending is including rotating the board of bending of connecting in the frame, being used for the butt and following the steel pipe both ends and bend the gliding and be used for the drive to bend a pivoted driving piece of bending, the rotation axis of the board of bending coincides with the rotation axis of the seat that takes shape, the board of bending has the race towards one side outer wall of the seat rotation axis of bending same shaping, the board of bending slides and connects in the seat of bending, the driving piece of bending sets up in the frame.

By adopting the technical scheme, when the steel pipe is bent, only two bending driving parts are needed to respectively drive the two bending seats to rotate, so that the two bending plates are driven to respectively move around the central axes of the two forming surfaces, the two ends of the steel pipe are bent towards the same side, and the bending of the U-shaped steel pipe can be realized; meanwhile, when the U-shaped steel pipe does not need to be bent, the L-shaped steel pipe or the V-shaped steel pipe can be bent only by starting one of the bending assemblies.

Optionally, the plate of bending is connected in the seat of bending through the regulating part that bends slides, the regulating part of bending including slide connect in the seat of bending the regulation seat, set up in the fixing base of bending of adjusting the seat and be used for controlling the regulator of bending that the fixing base slided of bending, the slip direction perpendicular to of the seat of adjusting the slip direction of the board of bending, the regulator of bending sets up in the seat of bending, the board of bending slides and connects in the fixing base of bending.

Through adopting above-mentioned technical scheme, when bending the steel pipe, only need to control through the regulator control adjusting seat of bending and slide to the seat of bending relatively to the control board of bending slides, and with the steel pipe centre gripping between the race on the board of bending and the race on the profile, and after the steel pipe is bent, only need bend the relative profile of board and keep away from and can unload, in order to further optimize the convenience when bending, thereby efficiency when further optimizing production.

Optionally, the adjusting seat is provided with a bending control element for controlling the bending fixing seat to slide relative to the adjusting seat, the bending control element comprises a bending control seat fixedly connected to the adjusting seat and a bending control rod penetrating through and slidably connected to the bending control seat, the bending control rod is fixedly connected to the bending control seat through two groups of bending control nuts for clamping the bending control seat, and the bending control rod is fixedly connected to the adjusting seat.

By adopting the technical scheme, because steel pipes with different specifications and dimensions can be bent in the furniture production process, the bending control nut is only required to be rotated to enable the bending control rod to slide relative to the bending control seat, so that the change of the relative forming surface interval of the bending plate is realized, and the possibility that the steel pipes with different specifications and dimensions cannot be adapted due to the insufficient telescopic path of the bending driving piece is reduced.

Optionally, the bending seat is provided with a return spring for controlling the bending plate to slide towards the bending direction of the steel pipe.

Through adopting above-mentioned technical scheme, reset spring is bending the board and follows the steel pipe sliding back, when the driving piece control of bending was bent the relative profiled surface of fixing base and is kept away from, reset spring can stimulate the board of bending and is slided along the length direction that the steel pipe was bent the tip to supplementary make the steel pipe break away from of bending relatively, reduce the steel pipe by locating the possibility of bending the board upper sheave groove, with the convenience of further optimizing and unloading.

Optionally, at least two wheel grooves on the bending plate and the forming seat are respectively formed, the bending seat is provided with a positioning piece for aligning and positioning the steel pipe, the positioning piece comprises a positioning plate and a positioning rod connected to the positioning plate in a penetrating and sliding manner, the positioning rod is fixedly connected to the bending fixing seat, and the positioning plate is located on a sliding path of the bending plate.

Through adopting above-mentioned technical scheme, can bend to two steel pipes simultaneously to further promote the efficiency of bending of steel pipe, simultaneously when the steel pipe of bending, still can be with the one end butt of steel pipe in the locating plate, and the locating plate cooperation locating lever is with the tip parallel and level of two steel pipes, thereby can be to the position of bending of steel pipe when fixing a position, can also reduce because bend two steel pipes simultaneously, lead to the possibility that two steel pipes bend the position difference, thereby when optimizing bending efficiency, optimize the precision of bending.

Optionally, the frame is provided with two limiting parts for limiting and positioning the bending angle of the steel pipe, the limiting part comprises a limiting seat arranged on the frame and a limiting plate hinged to the limiting seat, the rotating plane of the limiting plate is parallel to the rotating plane of the forming seat, and the two limiting plates are respectively located on opposite sides of the tail ends of the bending rotating paths at the two ends of the steel pipe.

By adopting the technical scheme, in the process of bending the steel pipe, the bending angle of the steel pipe can be limited through the limiting plate hinged to the limiting seat, so that the possibility of excessive bending of the steel pipe is reduced.

Optionally, the limiting seat is slidably disposed on the frame, and the limiting seat is fixedly connected to the frame through a limiting bolt.

Through adopting above-mentioned technical scheme, can be through the back that slides of restriction seat relative frame, rethread restriction bolt will restrict the seat and be fixed in the frame to adapt to the steel pipe of different angle of inflection.

Optionally, the frame is provided with a clamping assembly for clamping and flattening the steel pipe, the clamping assembly includes a clamping hydraulic cylinder fixedly connected to the frame, a clamping plate for clamping the steel pipe, and a fixing plate, the clamping plate is fixedly connected to the telescopic end of the clamping hydraulic cylinder, the fixing plate is fixedly connected to the frame and located between the two forming bases, the clamping hydraulic cylinder and the clamping plate are located on one side of the two forming bases away from the bending direction of the steel pipe, and the telescopic direction of the telescopic end of the clamping hydraulic cylinder is perpendicular to the distribution direction of the two forming bases.

By adopting the technical scheme, in the process of bending the steel pipe, the clamping plate can be controlled to slide towards the fixed plate through the telescopic end of the clamping hydraulic cylinder, so that the steel pipe is clamped between the fixed plate and the clamping plate, and the possibility that the steel pipe falls freely after the steel pipe is separated from the forming surface and the bending plate is reduced; when the steel pipe needs to be flattened, the clamped part of the steel pipe can be flattened by matching the fixing plate with the clamping plate.

In summary, the present application includes at least one of the following beneficial technical effects:

in the process of bending the steel pipe, after the steel pipe is bent through the bending assembly, when the steel pipe needs to be dismounted, only the forming driving piece is needed to control the forming seat to rotate, so that the forming surface is separated from the steel pipe in a rotating mode, the avoiding surface faces the steel pipe, the steel pipe can be separated from the forming seat relatively, external force is not needed to separate the steel pipe, and the possibility that the bent steel pipe is clamped in the wheel groove is reduced; in the process, the steel pipe is further assisted to be separated from the bending plate relatively through the sliding of the bending plate, so that the convenience of material removal of the steel pipe can be effectively optimized, and the production efficiency is optimized.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application.

FIG. 2 is a schematic view of a first configuration of a forming assembly and a bending assembly in an embodiment of the present application.

Fig. 3 is a schematic structural view of a forming seat in an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a bending seat in an embodiment of the present application.

FIG. 5 is a second schematic view of a forming assembly and a bending assembly in an embodiment of the present application.

Fig. 6 is an enlarged structural view of a portion a in fig. 1.

Fig. 7 is an enlarged schematic view of a portion B of fig. 1.

Description of the reference numerals: 1. a frame; 11. a limiting member; 111. a restricting seat; 112. a limiting plate; 113. a restraining bolt; 114. a connecting plate; 115. a strip-shaped hole; 12. a support member; 121. a support screw; 122. a support nut; 2. forming the assembly; 21. a forming seat; 211. molding surface; 212. an avoidance plane; 213. a wheel groove; 214. forming a shaft; 215. molding a lantern ring; 22. molding a driving member; 3. bending the assembly; 31. a bending seat; 311. bending the sleeve; 312. bending the connecting arm; 313. bending the adjusting groove; 314. a connecting port; 32. bending the plate; 33. bending the driving piece; 331. driving the hydraulic cylinder; 332. bending the rack; 333. bending the toothed ring; 34. bending the adjusting piece; 341. an adjusting seat; 342. bending the fixed seat; 343. a bending adjuster; 344. bending the sliding groove; 35. bending the control piece; 351. a bending control seat; 352. bending the control rod; 353. bending the control nut; 36. a return spring; 37. a positioning member; 371. positioning a plate; 372. positioning a rod; 373. positioning seats; 374. a fixing plate; 375. positioning the bolt; 5. a clamping assembly; 51. clamping a hydraulic cylinder; 52. a clamping plate; 521. a clamping seat; 522. clamping the top plate; 53. a fixing plate; 531. a fixed seat; 532. and fixing the splint.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a pipe bending machine. Referring to fig. 1, the pipe bending machine comprises a frame 1, two forming assemblies 2 and a bending assembly 3, wherein the two forming assemblies 2 are used for forming bent parts of U-shaped steel pipes. Two shaping subassemblies 2 are horizontal distribution and all set up in frame 1, and the subassembly 3 of bending is provided with two, and two subassemblies 3 of bending set up respectively in the one side that two shaping subassemblies 2 deviate from mutually, and the subassembly 3 of bending sets up in frame 1, and the subassembly 3 of bending is used for bending the both ends of steel pipe to form the steel pipe of U-shaped.

Referring to fig. 2 and 3, the forming assembly 2 includes a forming base 21 rotatably disposed on the frame 1 and a forming driving member 22 for driving the forming base 21 to rotate, the forming driving member 22 being disposed on the frame 1.

Specifically, the forming base 21 includes a forming shaft 214 rotatably connected to the frame 1 and a forming collar 215 in a ring shape, one end of the forming shaft 214 is connected to the power output end of the forming driving member 22 and rotatably connected to the frame 1, and the other end of the forming shaft 214 is in a stepped shaft-like structure and the small end faces a direction away from the frame 1. The inner wall of the forming lantern ring 215 is of a stepped shaft-shaped structure, the transition surface of the inner wall of the forming lantern ring 215 abuts against the stepped surface of the outer wall of the forming shaft 214, and the forming lantern ring 215 is fixedly connected to the forming shaft 214 through bolts so as to achieve dismounting of the forming lantern ring 215 and adapt to U-shaped steel pipes with different bending radius specifications.

Referring to fig. 2 and 3, the outer wall of the molding collar 215 includes a molding surface 211 and an avoiding surface 212, the molding surface 211 is an arc surface parallel to the central axis of the molding collar 215, and the avoiding surface 212 is connected to both end edges of the molding surface 211 along the circumferential direction of the molding collar 215. And the avoiding surface 212 is positioned at the inner side of the path of the circumferential rotation of the forming surface 211 so as to reduce the limitation on the formed U-shaped steel pipe during the rotation.

Preferably, the avoiding surface 212 is a plane, and the forming surface 211 is provided with two wheel grooves 213 which are distributed along the axial direction of the forming sleeve ring 215, so as to be used for simultaneously clamping two steel pipes and optimizing the bending efficiency of the steel pipes. The extension path of the wheel groove 213 is arc-shaped, the extension path of the wheel groove 213 and the molding collar 215 are arranged on the same central axis, and the cross section profile of the wheel groove 213 is arc-shaped for adapting to the profile of the outer wall of the steel pipe. Of course, in other embodiments, the avoiding surface 212 may also be an irregular curved surface, a wave-shaped curved surface, or a zigzag curved surface.

When the steel pipe is bent, the two steel pipes are clamped and abutted against the inner walls of the two wheel grooves 213 only through the bending parts of the two bending assemblies 3, and then the two ends of the two steel pipes are bent through the bending assemblies 3 to form the U-shaped steel pipe; when unloading, the bending part of the bending component 3 is reset, and then the forming shaft 214 is driven to rotate by the forming driving part 22, so that the steel pipe is separated from the forming surface 211, and then the steel pipe is taken out from between the forming sleeve ring 215 and the bending component 3. Simultaneously, make face 212 of dodging towards the steel pipe, can make the steel pipe break away from the shaping lantern ring 215 naturally this moment, effectual reduction is because of the steel pipe is at the in-process of bending, because of the micro-deformation that the part produced and the joint in race 213's possibility, compare and take out in direct race 213, need external force to order about the relative race 213 of steel pipe and break away from, can reduce the resilience that produces after bending the steel pipe because of external force leads to, thereby when reaching the convenient to detach steel pipe, can also assist the resilience that reduces the steel pipe.

Referring to fig. 2 and 3, two forming driving members 22 are provided corresponding to the two forming shafts 214 for respectively driving the two forming shafts 214 to rotate. The forming driving member 22 is a motor or a rotary hydraulic cylinder, in the embodiment of the present application, the forming driving member 22 is a rotary hydraulic cylinder, and the large end of the forming shaft 214 is rotatably connected to the frame 1 and coaxially and fixedly connected to the power output end of the forming driving member 22, so as to drive the forming shaft 214 to rotate.

Referring to fig. 2 and 3, in particular, the bending assembly 3 includes a bending base 31 rotatably connected to the frame 1, a bending plate 32, and a bending driving member 33 for driving the bending base 31 to rotate, wherein the bending plate 32 is slidably connected to the bending base 31 through a bending adjusting member 34. Wherein, the bending driving member 33 is disposed on the frame 1.

Referring to fig. 2 and 4, the bending base 31 includes a bending sleeve 311 and a bending connecting arm 312, the bending sleeve 311 is sleeved on and rotatably connected to the forming shaft 214, one end of the bending sleeve 311 is rotatably connected to the frame 1, and one end of the bending sleeve 311 connected to the frame 1 is connected to a power output end of the bending driving member 33 for driving the bending sleeve 311 to rotate. The other end of the bending sleeve 311 is fixedly connected to the bending connecting arm 312, and the length direction of the bending connecting arm 312 is perpendicular to the central axis of the bending sleeve 311.

The bending actuator 33 includes a driving hydraulic cylinder 331, a bending rack 332 fixedly connected to the telescopic end of the driving hydraulic cylinder 331, and a bending toothed ring 333 externally fitted and fixedly connected to the bending sleeve 311, and the cylinder body of the driving hydraulic cylinder 331 is fixedly connected to the frame 1. The bending rack 332 is slidably connected to the inside of the frame 1, and the bending rack 332 is engaged with the bending toothed ring 333. The bending racks 332 of the two bending driving members 33 are arranged in a staggered manner, so that when a steel pipe is bent, the hydraulic cylinder 331 is driven to drive the bending toothed ring 333 to rotate through the bending racks 332, and the bending sleeve 311 can be driven to rotate so as to drive the bending connecting arm 312 to rotate.

Of course, in other embodiments, a rotary hydraulic cylinder may be used as the bending driver 33, and the rotating end of the bending driver 33 is annular or tubular, and the rotating end of the bending driver 33 is coaxially and fixedly connected to the bending sleeve 311.

Referring to fig. 4 and 5, the bending adjusting member 34 includes an adjusting seat 341, a bending fixing seat 342, and a bending adjuster 343, the bending connecting arm 312 is provided with a bending adjusting groove 313 extending along the length direction, the bending adjusting groove 313 is a dovetail groove, and the adjusting seat 341 is adapted to and slidably connected to the inner wall of the bending adjusting groove 313. The bending connecting arm 312 has a connecting port 314 penetrating in the thickness direction of the adjusting seat 341, and the connecting port 314 communicates with the bending adjusting groove 313. The bending regulator 343 is a hydraulic cylinder, a cylinder body of the bending regulator 343 is hinged to the bending connecting arm 312, and a telescopic end of the bending regulator 343 passes through the connecting port 314 and is hinged to the adjusting seat 341 so as to drive the adjusting seat 341 to slide. Of course, in other embodiments, bending actuator 343 may be configured as an electric ram.

Adjust seat 341 and offer a plurality of screw holes that distribute along the direction of sliding, bend fixing base 342 through inserting establish and threaded connection adjust seat 341 on the screw hole bolt fixed connection adjust seat 341 to be used for adjusting the interval of bending fixing base 342 relative shaping lantern ring 215 center, adapt to different angle of bending and steel pipe diameter.

Referring to fig. 4 and 5, a bending sliding groove 344 is formed in the end surface of the bending fixing seat 342 facing the forming collar 215, the bending sliding groove 344 is a dovetail groove, and the extending direction of the bending sliding groove 344 is perpendicular to the central axis of the bending sleeve 311 and the length direction of the bending connecting arm 312, so that the bending plate 32 can slide relative to the bending fixing seat 342 along with the end portion of the steel pipe when the steel pipe is bent. The bending plate 32 is clamped and connected to the inner wall of the bending sliding groove 344 in a sliding manner, the wheel groove 213 is also formed in the plate surface of the bending plate 32 on the side away from the bending fixing seat 342, and the extending direction of the wheel groove 213 on the bending plate 32 is parallel to the sliding direction of the bending plate 32. Wherein, the fixing base 342 that bends fixedly connected with is used for making the reset spring 36 that bends board 32 and reset, and reset spring 36 is used for ordering about the tip of the board 32 that bends towards the back steel pipe of bending and slides.

When the steel pipe is bent, the bending plate 32 is displaced to the lower part of the molding collar 215, then the bending regulator 343 controls the adjusting seat 341 to slide, so that the bending fixing seat 342 slides towards the steel pipe, the steel pipe is clamped between the wheel groove 213 on the molding surface 211 and the wheel groove 213 on the bending plate 32, and then the bending driving part 33 drives the bending sleeve 311 to rotate, so as to drive the bending connecting arm 312 to rotate around the molding collar 215. And at this in-process, because the bending radius that the existence of profile 211 leads to when the steel pipe is bent, the tip that can make the steel pipe butt relatively can have certain shrink in the interval at the middle part of steel pipe, the board 32 of bending this moment can bend the slip of fixing base 342 relatively, adapt to the displacement of steel pipe in-process of bending, in order to reduce the in-process of bending, because of the wearing and tearing that the friction produced to the steel pipe, and simultaneously, can also reduce the possibility of locating race 213 with the steel pipe card because of the burr that wearing and tearing produced etc. is located, thereby reduce the degree of difficulty of dismantling the steel pipe, when reaching the dismouting of being convenient for, reduce the possibility that the in-process steel pipe that bends takes place wearing and tearing. In addition, after the completion of bending, the regulator 343 of bending is not hard up through the relative steel pipe of the fixing base 342 control board 32 of bending to at this in-process, the board 32 of bending resets under reset spring 36's effect, thereby makes the steel pipe after being bent break away from the board 32 of bending relatively, in order to reduce the influence of rebounding to the steel pipe, further optimizes the convenience that the steel pipe was dismantled.

Referring to fig. 5, in addition, during the process of bending the steel pipe, the bending plate 32 and the bending fixing seat 342 are required to bear relatively large load, and during the process, the bending fixing seat 342 generates torque. In order to reduce the possibility of looseness occurring in relation to the adjusting seat 341 due to the torque received by the bending fixing seat 342, the adjusting seat 341 is provided with a bending control member 35 for controlling the bending fixing seat 342 to slide in relation to the adjusting seat 341.

The bending control piece 35 comprises a bending control seat 351 and a bending control rod 352 penetrating through and connected to the bending control seat 351 in a sliding mode, two bending control nuts 353 are sleeved outside the bending control rod 352 and connected with the bending control rod in a threaded mode, and the two bending control nuts 353 clamp the bending control seat 351 so as to be used for fixedly connecting the bending control rod 352 to the bending control seat 351. The same set of bending control nuts 353 includes at least one bending control nut 353, and the same set of bending control nuts 353 may be provided in one, two or more, and in this embodiment, the same set includes one bending control nut 353.

When steel pipes with different specifications and sizes are replaced and the bending radius is changed, only the two bending control nuts 353 need to be rotated to control the distance between the bending fixing seat 342 and the bending control seat 351, so that the steel pipes with different specifications and sizes and the bending radius are adapted, meanwhile, the bending fixing seat 342 is assisted to be supported, and the influence of the torque on the stability of the bending fixing seat 342 in the process of bending the steel pipes is reduced; therefore, the steel pipe bending machine can adapt to steel pipes with different specifications and sizes and bend radiuses, and meanwhile reduces the influence on the stability of the steel pipes in the bending process.

Of course, in other embodiments, the bending control rod 352 of the bending control member 35 may be inserted into the bending fixing seat 342, and the bending control nut 353 may be fixedly connected to the bending control seat 351. At this time, after the position of the bending fixing seat 342 relative to the adjusting seat 341 is changed, the bending control rod 352 is rotated to make the bending control rod 352 slide relative to the bending control seat 351.

Referring to fig. 5, specifically, since two wheel slots 213 are formed in the bending plate 32, that is, two steel pipes need to be bent at the same time, in order to optimize the convenience of bending the steel pipes after bending and the bending precision, the bending base 31 is provided with a positioning element 37 for aligning and positioning the two steel pipes, and the positioning element 37 is connected to the bending connecting arm 312 through the bending adjusting element 34.

The positioning member 37 comprises a positioning plate 371 and a positioning rod 372, the positioning plate 371 comprises a positioning seat 373 and a fixing plate 374 fixedly connected to the positioning seat 373, the positioning rod 372 is arranged in the positioning seat 373 in a penetrating and sliding manner, the positioning rod 372 is fixedly connected to the positioning rod 372 through a positioning bolt 375 arranged in the positioning seat 373 in a penetrating manner, the surface of the fixing plate 374 is perpendicular to the positioning rod 372, the fixing plate 374 is located on a sliding path of the bending plate 32, the positioning rod 372 is parallel to the sliding direction of the bending plate 32, the positioning rod 372 is inserted into the bending fixing seat 342, the positioning rod 372 is fixedly connected to the bending fixing seat 342 through other positioning bolts 375 inserted into the bending fixing seat 342, so that the positioning member 37 can be conveniently disassembled and assembled, and the positioning member 37 can be repeatedly used when the bending plate 32 is replaced to adapt to steel pipes with different sizes.

When the steel pipes are placed on the bending plate 32, the two steel pipes can be aligned only by simultaneously abutting one ends of the two steel pipes against the fixing plate 374. Simultaneously, when bending to the steel pipe of different length, only need through not hard up positioning bolt 375 for positioning seat 373 slides relative positioning rod 372, can adapt to the length of different steel pipes, afterwards, rethread positioning bolt 375 with positioning seat 373 fixed connection in positioning rod 372 can.

Of course, in other embodiments, the positioning member 37 can also be an L-shaped plate fixedly connected to the bending plate 32, and the steel pipe is aligned and positioned by the protrusion of the positioning member 37. Or the positioning rod 372 is fixedly connected to the bending fixing seat 342 through integral molding or welding.

Similarly, in other embodiments, the bending assembly 3 may also include an arc-shaped slide rail fixedly connected to the frame 1, the slide rail and the forming collar 215 are arranged on the same central axis, the bending seat 31 is clamped and slidably connected to the slide rail, and the bending seat 31 is driven to slide by a hydraulic cylinder hinged to the frame 1 to bend the steel pipe.

Referring to fig. 5 and 6, in addition, in order to facilitate installation and fixation of the steel pipes, the frame 1 is provided with a clamping assembly 5 for clamping the steel pipes, the clamping assembly 5 including a clamping hydraulic cylinder 51, a clamping plate 52, and a fixing plate 53. The cylinder body fixed connection of centre gripping pneumatic cylinder 51 is in frame 1, and the flexible end fixed connection of centre gripping pneumatic cylinder 51 is in grip block 52, and centre gripping pneumatic cylinder 51 and grip block 52 are located the below of two shaping lantern rings 215, and the flexible direction perpendicular to two shaping lantern rings 215 of the flexible end of centre gripping pneumatic cylinder 51 distribute the direction and be vertical setting. The fixing plate 53 is fixedly connected to the frame 1, and the fixing plate 53 is located between the two profiled collars 215.

Referring to fig. 5 and 6, specifically, the clamping plate 52 includes a clamping seat 521 fixedly connected to the telescopic end of the clamping hydraulic cylinder 51 and a clamping top plate 522 detachably connected to the clamping seat 521 through a bolt, and the clamping top plate 522 is located on one side of the clamping seat 521 facing the forming collar 215, so as to cooperate with the fixing plate 53 to clamp and fix the steel pipe, and simultaneously, the steel pipe can be flattened according to the processing requirement. The wheel groove 213 is also formed on the side of the clamping top plate 522 facing the forming collar 215, so that the clamping top plate 522 can be adapted to steel pipes of different specifications by replacing the clamping top plate 522 when the steel pipes of different specifications are treated.

The fixed plate 53 includes fixed connection in the fixing base 531 of frame 1 and through the bolt can dismantle the fixed splint 532 who connects in fixing base 531 towards centre gripping roof 522, and fixing base 531 is located between two shaping lantern rings 215, and fixed splint 532 is used for cooperating the centre gripping steel pipe with centre gripping roof 522 to be used for cooperating the change of centre gripping roof 522 and shaping lantern ring 215, adapt to the steel pipe of different specifications.

Referring to fig. 7, in particular, since both ends of the steel pipe are bent, in order to reduce the possibility that both ends of the steel pipe are bent excessively, the frame 1 is provided with two restricting members 11 for restricting and positioning both ends of the steel pipe.

The limiting member 11 includes a limiting seat 111 and a limiting plate 112 disposed on the frame 1, the limiting seat 111 is in an L-shaped plate-like structure, horizontal portions of the two limiting seats 111 are disposed oppositely, and the limiting seat 111 is located on a side of the forming collar 215 facing away from the clamping plate 52. Wherein, the inner side of the bending part of the limiting seat 111 is provided with a reinforcing rib for increasing the load bearing capacity of the limiting seat 111.

Referring to fig. 7, the restriction plate 112 is hinged to a vertical portion of the L-shaped plate-like structure of the restriction seat 111 by a connection plate 114, and the connection plate 114 has a U-shaped plate-like structure. The vertical portion and the horizontal portion of restriction seat 111 have all been seted up rectangular shape hole 115, and rectangular shape hole 115 sets up along the vertical extension of the vertical portion of its place restriction seat 111 or along the horizontal portion horizontal extension of restriction seat 111.

The limiting base 111 is fixedly connected to the frame 1 through a limiting bolt 113 penetrating through a long hole 115 on a horizontal portion thereof, so as to adapt to different bending angles. The connecting plate 114 is fixedly connected to the limiting seat 111 through bolts penetrating through elongated holes 115 in the vertical portion of the limiting seat 111, the limiting plate 112 is partially clamped between two side plates of the connecting plate 114, and the limiting plate 112 is connected to the connecting plate 114 through rotation, so that the limiting plate 112 is hinged to the limiting seat 111 through the connecting plate 114, and the angle of the end portion of the steel pipe after being bent is adapted. The rotation plane of the limiting plate 112 is parallel to the rotation plane of the forming sleeve ring 215, and the outer wall of one side of the limiting plate 112 departing from the limiting seat 111 is also provided with two wheel grooves 213 for adapting and positioning the bent positions of the two ends of the steel pipe, and the steel pipe which is deflected after being bent can be found in time. The path of the rotation of the bending plate 32 around the central axis of the forming collar 215 is located on the side of the limiting plate 112 facing the forming collar 215.

When in use, the two ends of the steel pipe can be respectively abutted against the wheel grooves 213 on the two limiting plates 112 through the bending plate 32, so that the bending angle of the steel pipe can be limited, and the possibility of over-bending of the steel pipe is reduced; meanwhile, when the steel pipe is bent, the steel pipe can be extruded through the bending plate 32, so that the steel pipe is bent towards the space between the two limiting plates 112 in the bending process, and then the steel pipe is restored through resilience of the steel pipe, so that the bending precision of the steel pipe is further optimized.

Referring to fig. 7, in order to optimize the pressure of the limiting base 111 when the steel pipe abuts against the limiting plate 112, a supporting member 12 for assisting the support of the two limiting bases 111 is disposed on the edge of the limiting base 111 on the side away from the frame 1.

Support piece 12 includes support screw 121 and two sets of support nuts 122, and two limits seat 111 are worn to locate respectively at support screw 121's both ends, specifically has seted up two installing ports for limit seat 111, locates the installing port of limit seat 111 with support screw 121 card. The supporting nuts 122 are sleeved and screwed on the supporting screw 121, and the same group comprises at least two supporting nuts 122, and in the embodiment of the present invention, two supporting nuts 122 are arranged in the same group. And the edge of the restriction seat 111 is clamped between two support nuts 122 of the same set for supporting and restricting the restriction seat 111, while accommodating the change of the relative position between the two restriction seats 111.

The implementation principle of the embodiment is as follows: when bending a U-shaped steel pipe, the steel pipe is held between the holding top plate 522 and the holding plate 52, and then the holding top plate 522 is controlled by the holding hydraulic cylinder 51 to abut the steel pipe against the holding plate 52. Then, the two bending drivers 33 respectively drive the two bending plates 32 through the two bending bases 31 to bend the ends of the steel pipe, so that the two ends of the steel pipe are bent toward the limiting base 111 under the action of the two forming collars 215, and the ends of the steel pipe abut against the limiting plate 112.

After the steel pipe is bent, the bending regulator 343 controls the bending fixing seat 342 to slide towards the direction away from the forming lantern ring 215, so that the bending plate 32 is separated from the steel pipe, and in the process, the return spring 36 drives the bending plate 32 to slide towards one side of the limiting seat 111, so that the steel pipe is separated from the bending plate 32, and the resilience of the steel pipe caused by external force is reduced; synchronously, in the process, the molding driving member 22 drives the molding collar 215 to rotate through the molding shaft 214, so that the avoiding surface 212 faces the steel pipe, and the possibility that the steel pipe is clamped in the wheel groove 213 on the molding collar 215 is reduced; finally, the clamping hydraulic cylinder 51 controls the clamping plate 52 to separate from the fixing plate 53, the steel pipe can be separated under the action of gravity, and therefore the clamping assembly 5 is matched with the avoiding surface 212 and the bending plate 32 to reset, so that the steel pipe is relatively stable and convenient to unload, and the influence of the rebound of the steel pipe in the unloading process is reduced, and the possibility of damage to the steel pipe is reduced.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. A pipe bender which characterized in that: including frame (1), two shaping subassembly (2) that are used for shaping steel pipe U-shaped pipe portion of bending and be used for bending the subassembly (3) of bending at steel pipe both ends, shaping subassembly (2) set up in the seat (21) that takes shape of frame (1) and be used for driving and take shape seat (21) pivoted shaping driving piece (22) including rotating, shaping driving piece (22) set up in frame (1), the outer wall that takes shape seat (21) are on a parallel with axis of rotation includes shaping face (211) and dodges face (212), shaping face (211) are arc face form structure and offer round race (213) that extend around shaping face (211) the central axis, shaping face (211) are located shaping face (211) and rotate the inboard in route, the subassembly (3) of bending rotate respectively and set up in frame (1).

2. Pipe bending machine according to claim 1, characterized in that: the shaping seat (21) sets up including the rotation in shaping axle (214) and the overcoat of frame (1) and can dismantle the shaping lantern ring (215) of connecting in shaping axle (214), the week side outer wall of shaping lantern ring (215) is seted up in shaping face (211), dodge face (212) and race (213), the drive end in shaping driving piece (22) is connected in shaping axle (214).

3. Pipe bending machine according to claim 1, characterized in that: the bending assembly (3) is provided with two, the bending assembly (3) is connected in the seat (31) of bending of frame (1), is used for the butt and follows the steel pipe both ends and bend board (32) of sliding and be used for the drive seat (31) pivoted driving piece (33) of bending including rotating, the axis of rotation of the board (32) of bending coincides with the axis of rotation of the seat (21) that takes shape, the board (32) of bending has race (213) towards the same shaping of the seat (31) axis of rotation one side outer wall of bending, the board (32) of bending slides and connects in the seat (31) of bending, the driving piece (33) of bending sets up in frame (1).

4. A pipe bending machine according to claim 3, wherein: the bending device is characterized in that the bending plate (32) is connected to a bending seat (31) in a sliding mode through a bending adjusting piece (34), the bending adjusting piece (34) is connected to an adjusting seat (341) of the bending seat (31) in a sliding mode, a bending fixing seat (342) arranged on the adjusting seat (341) and a bending adjuster (343) used for controlling the bending fixing seat (342) to slide, the sliding direction of the adjusting seat (341) is perpendicular to the sliding direction of the bending plate (32), the bending adjuster (343) is arranged on the bending seat (31), and the bending plate (32) is connected to the bending fixing seat (342) in a sliding mode.

5. Pipe bending machine according to claim 4, characterized in that: adjust seat (341) and be provided with and be used for controlling the relative control of bending (35) that adjusts seat (341) and slide of fixing base (342) of bending, bend control (35) including fixed connection in the control of bending (351) of adjusting seat (341) and wear to establish and slide and connect in the control lever of bending (352) of control seat (351) of bending, control lever of bending (352) are through two sets of control nut of bending (353) fixed connection in the control of bending (351) of control seat (351) centre gripping of will bending, control lever of bending (352) fixed connection in adjusting seat (341).

6. Pipe bending machine according to claim 4, characterized in that: the bending seat (31) is provided with a return spring (36) used for controlling the bending plate (32) to slide towards the bending direction of the steel pipe.

7. Pipe bending machine according to claim 5, characterized in that: at least two have all been seted up in race (213) on board (32) of bending, the seat (21) that takes shape, just seat (31) of bending is provided with setting element (37) that are used for aligning the steel pipe location, setting element (37) include locating plate (371) and wear to establish and slide and connect in locating lever (372) of locating plate (371), locating lever (372) fixed connection is in fixing base (342) of bending, locating plate (371) are located the slip route of the board (32) of bending.

8. Pipe bending machine according to claim 1, characterized in that: the frame (1) is provided with two limiting parts (11) used for limiting and positioning the bending angle of the steel pipe, each limiting part (11) comprises a limiting seat (111) arranged on the frame (1) and a limiting plate (112) hinged to the limiting seat (111), the rotating plane of each limiting plate (112) is parallel to the rotating plane of the forming seat (21), and the two limiting plates (112) are respectively located on the opposite sides of the tail ends of the bending rotating paths at the two ends of the steel pipe.

9. Pipe bending machine according to claim 8, characterized in that: the limiting seat (111) is arranged on the rack (1) in a sliding mode, and the limiting seat (111) is fixedly connected to the rack (1) through a limiting bolt (113).

10. Pipe bending machine according to claim 1, characterized in that: the steel pipe forming machine is characterized in that the frame (1) is provided with a clamping assembly (5) used for clamping and flattening a steel pipe, the clamping assembly (5) comprises a clamping hydraulic cylinder (51) fixedly connected to the frame (1), a clamping plate (52) used for clamping the steel pipe and a fixing plate (53), the clamping plate (52) is fixedly connected to the telescopic end of the clamping hydraulic cylinder (51), the fixing plate (53) is fixedly connected to the frame (1) and located between two forming seats (21), the clamping hydraulic cylinder (51) and the clamping plate (52) are located on one side of the two forming seats (21) deviating from the bending direction of the steel pipe, and the telescopic direction of the telescopic end of the clamping hydraulic cylinder (51) is perpendicular to the distribution direction of the two forming seats (21).

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