CN115302746A

CN115302746A - Pipe bending device

Info

Publication number: CN115302746A
Application number: CN202210970794.9A
Authority: CN
Inventors: 浦全锦; 周忠平; 岑卜橡飘
Original assignee: Hangzhou Lin'an Saimei Furniture Co ltd
Current assignee: Hangzhou Lin'an Saimei Furniture Co ltd
Priority date: 2022-08-13
Filing date: 2022-08-13
Publication date: 2022-11-08

Abstract

The application discloses a pipe bending device, which relates to the technical field of pipe fitting processing and solves the problems of low efficiency and insufficient yield of pipe fitting bending in the prior art, and comprises a base, two clamping pieces, a preheating mechanism and a supporting die, wherein the two clamping pieces are connected to the base in a sliding manner and comprise clamping jaws, a connecting mechanism for rotating the clamping jaws and a rotating mechanism; the preheating mechanism is arranged between the two clamping pieces and comprises a heater and a lifting mechanism of the heater; the supporting die can move to the middle of the two clamping pieces and comprises a seat body, a supporting block and a pushing mechanism for pushing the supporting block; the base is also provided with a sliding mechanism for pushing the supporting die. This application is passed through the fixed processing pipe both ends of preprocessing of holder, makes the heating machine to the kink heating, and slewing mechanism drives processing pipe thermally equivalent to softening in advance simultaneously, and the supporting shoe is by supreme butt kink in order to buckle processing pipe in advance, and position and the angular adjustment that adaptability was done to holder and chuck according to processing pipe bending degree in advance.

Description

Pipe bending device

Technical Field

The application relates to the technical field of pipe fitting processing, in particular to a pipe bending device.

Background

The thermoplastic pipe is a pipe which has plasticity at a certain temperature and can be re-solidified after being cooled, and is generally made of acrylic, high-strength glass or plastic and other materials. In practical application, in order to adapt to different working conditions, the pipe fitting is bent to a certain degree.

In the prior art, the bending part is generally heated uniformly, and when the preheating point is in a soft state, pressure is applied to two ends simultaneously by hands to bend the pipe fitting.

Aiming at the related technologies, the inventor considers that the pipe bending efficiency is low in the prior art, and the problem of the pipe fitting caused by unstable force application in the pipe bending process is easy to occur, so that the yield is low.

Disclosure of Invention

In order to improve the machining efficiency and the yields of buckling of pipe fitting, this application provides a swan neck system.

The following technical scheme is adopted:

an elbow device, comprising:

a base;

the clamping parts are only used for simultaneously sliding towards the directions close to each other or far away from each other, and each clamping part comprises a clamping jaw, a connecting mechanism used for enabling the clamping jaw to rotate along the vertical direction and a rotating mechanism used for simultaneously rotating the two clamping jaws in the same direction so as to drive the preprocessed pipe to rotate by taking the axis of the preprocessed pipe as a central line;

the preheating mechanism is arranged between the two clamping pieces in the base and comprises a heater and a lifting mechanism for enabling the heater to be close to or far away from the preprocessed pipe fixed by the clamping pieces;

the support die is connected to the base in a sliding mode and can move to two clamping piece middle positions, the support die is used for conducting plasticity on bent portions of the preprocessed pipes, the support die comprises a base body, a support block and a pushing mechanism, the pushing mechanism is used for pushing the support block from bottom to top so as to apply bending force to the preprocessed pipes, the base body is connected to the base in a sliding mode, the pushing mechanism is arranged in the base body and penetrates through the base body, one end of the base body is connected with the support block, and the base is further provided with a sliding mechanism used for pushing the support die to be close to or far away from the preprocessed pipes.

Through adopting above-mentioned technical scheme, will add the fixed through the holder in advance the processing pipe both ends, and make the heating machine be close to and add the heat in advance processing pipe bending portion, the while slewing mechanism drives the processing pipe thermally equivalent in advance with heating, after the processing pipe softens, the heating machine drives through hoist mechanism and keeps away from the processing pipe to the position of giving out enough space for supporting the mould, the supporting shoe is by supreme butt kink in order to buckle the processing pipe in advance from bottom to top, with base sliding connection's holder and rotatable chuck, position and angle adjustment of adaptability are done according to the processing pipe bending degree in advance, after the processing pipe is buckled to required degree, the device is static to the processing pipe cooling before resumeing, can take out the processing pipe.

Optionally, a first pipeline is vertically arranged in the seat body, the propulsion mechanism includes a propulsion rod slidably connected to the first pipeline, one end of the propulsion rod, which is far away from the seat body, is detachably connected to the supporting block, one side of the seat body, which is close to the sliding mechanism, is further provided with a driving cylinder, the driving cylinder is communicated with the first pipeline, a driving rod is slidably connected to the driving cylinder, one end of the driving rod, which is far away from the driving cylinder, is connected to a telescopic cylinder for controlling the driving rod to slide, one end of the propulsion rod, which is close to the driving rod, is provided with a propulsion piston, one end of the driving rod, which is close to the propulsion rod, is provided with a driving piston, and the driving cylinder and the first pipeline are filled with a transmission medium between the propulsion piston and the driving piston.

Through adopting above-mentioned technical scheme, provide one kind and drive the scheme that the supporting shoe carries out processing to the pipe of preprocessing through telescopic cylinder, telescopic cylinder drives the active rod and promotes the active cylinder and the interior transmission medium of first pipeline promotes the propulsion piston and moves to make the propulsion rod of being connected with the propulsion piston to down and drive the supporting shoe and buckle to the pipe of preprocessing.

Optionally, still be provided with two first piston rods that deviate from each other or be close to the motion each other along same sharp level in the pedestal, just first piston rod can wear to establish the pedestal, two the one end that first piston rod is close to each other all is provided with first piston piece, seted up the confession in the pedestal the second pipeline that first piston piece slided, first pipeline perpendicular intercommunication with second pipeline length direction's center, and the second pipeline is in two be full of between the first piston piece transmission medium equally, in the base with the pedestal removes to advance to process two after the pipe corresponds to the position all be provided with the confession on the first piston rod corresponds the position promote its second piston rod that carries out the motion behind the first piston rod butt, two the equal rigid coupling in one side that the holder deviates from each other has the connecting piston rod that sets up along the direction of sliding, just set up in the base and supply promote to connect the piston rod after the motion and carry out a plurality of pipelines of sliding, just be full of transmission medium in the pipeline equally.

Through adopting above-mentioned technical scheme, a scheme of supporting shoe and two holder synchronous motion is provided, when the pedestal removed to under the preprocessing pipe, when the action bars drove the motion of impulse ram via transmission medium, first piston rod was promoted along with the action bars, and the butt second piston rod, the second piston rod is promoted and slides in the base, because be equipped with the pipeline in the base and be full of transmission medium in the pipeline, thereby make the connecting piston rod that is located the pipeline other end promoted, cause the holder to be promoted, thereby realize the linkage of supporting shoe and holder.

Optionally, the clamping jaw includes the base, the constant head tank that supplies the preprocessing pipe to get into is seted up at the base center, go back on the base circumference interval and set up a plurality of logical grooves that communicate with the constant head tank respectively, sliding connection has to support the piece in leading to the groove, support the piece and keep away from the one end of constant head tank is worn out the base outer wall and is extended the face and this end and be provided with the chamfer, threaded connection has the ability to follow on the base outer wall the control ring that base length direction removed, the control ring can follow base length direction remove to with support on the piece the chamfer butt promotes support the piece slides.

Through adopting above-mentioned technical scheme, after inserting the preprocessing pipe in the constant head tank, rotate the control ring and move to control ring and a plurality of piece butt simultaneously along base length direction, continue to rotate the control ring and slide until butt preprocessing pipe wall in logical groove in order to drive a plurality of pieces of support to fixed preprocessing pipe.

Optionally, the holder is still including the slider, branch and the connecting block that set gradually, the base surface is followed the spout has been seted up on the holder moving path, the holder passes through the slider with spout sliding connection in on the base, branch connect in the slider is kept away from one side of base, the connecting block articulated with on the branch, just be provided with in the connecting block and make its torsional spring that has the downward motion trend, the connecting block with the torsional spring is constituteed slewing mechanism.

Through adopting above-mentioned technical scheme, the position and the angle of holder need do corresponding adjustment when the pipe of preprocessing is buckled, and slider and spout cooperation make the holder carry out the displacement when buckling along with the pipe of preprocessing, make the holder can adapt to the angle of buckling of the pipe of preprocessing with branch articulated connecting block, and the torsional spring provides certain holding down force for the pipe both ends of preprocessing to guarantee the stability of the pipe of preprocessing when buckling.

Optionally, an extension tube is arranged between the connecting block and the clamping jaw, and a first spring is sleeved outside the extension tube.

Through adopting above-mentioned technical scheme, flexible pipe and the cooperation of first spring provide the cushioning volume of certain degree for preprocessing pipe when buckling, and when installing preprocessing pipe in to the holder, the accessible is stirred flexible pipe in order to let out certain space and make preprocessing pipe insert in the constant head tank simultaneously.

Optionally, the glide machanism include the rigid coupling in cylinder and sliding connection that slide on the base in the pole that slides in the cylinder that slides, still be provided with the seat that slides under the pedestal, telescopic cylinder also locates on the seat that slides, the pole that slides is kept away from the one end butt of the cylinder that slides in on the seat that slides.

Through adopting above-mentioned technical scheme, utilize the cylinder that slides to drive the seat that slides and remove to an automatic scheme of removing pedestal and telescopic cylinder is provided, for the use raise the efficiency of device.

Optionally, a return spring abutting against the sliding block to enable the clamping piece to have a moving trend towards the direction where the connecting piston rod is located is further arranged in the sliding groove.

Through adopting above-mentioned technical scheme, after the bending of preprocessing pipe finishes and takes out, reset spring when the active lever withdraws, drives the holder and gets back to initial position to the processing of convenience next time.

Optionally, an arc-shaped groove for the pre-processing pipe to enter is formed in one side, which is abutted to the pre-processing pipe, of the supporting block along the length direction of the supporting block.

Through adopting above-mentioned technical scheme, the arc wall is the shape of laminating preprocessing pipe outer wall radian to prevent at the return bend in-process, the stress point receives extrusion deformation.

In summary, the present application includes at least one of the following advantages:

1. the automatic pipe bending equipment is provided to improve the pipe bending efficiency of the thermoplastic pipe;

2. the sliding and rotating of the clamping piece are matched to enable the stress at two ends of the preprocessed pipe to be more uniform during pipe bending, so that the yield of pipe bending of the thermoplastic pipe is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a schematic sectional view showing the heating of the prefabricated pipe according to the present embodiment;

FIG. 3 is a schematic structural view of a part of the sliding mechanism of the present embodiment;

FIG. 4 is a schematic view of the clamp configuration;

FIG. 5 is a schematic view of a clamp in partial section;

fig. 6 is a schematic structural view of the prefabricated pipe in the present embodiment when being bent.

Description of the reference numerals: 1. a base; 11. a chute; 12. a position-entering groove; 13. slotting; 14. a slipping cylinder; 141. a slide bar; 15. a second piston rod; 151. a second piston block; 152. a first connecting groove; 153. a third pipeline; 16. a double-ended piston rod; 161. a third piston block; 162. a third piston rod; 163. a fourth piston block; 164. a fourth pipeline; 17. an upper turning pipeline; 18. a fifth piston block; 181. a fifth pipeline; 2. a clamping member; 21. a slider; 211. a piston rod is connected; 212. a return spring; 22. a strut; 221. a hinged column; 222. a torsion spring; 23. connecting blocks; 24. a telescopic pipe; 241. a first spring; 25. rotating the driving member; 251. shifting blocks; 26. a clamping jaw; 261. a base; 2611. positioning a groove; 2612. a through groove; 2613. an external thread; 262. a resisting block; 2621. a pipe abutting part; 2622. a rod supporting part; 2623. a bump; 2624. chamfering; 2625. a second spring; 2626. a limiting block; 2627. a limiting groove; 263. a control loop; 2631. a guide groove; 2632. an internal thread; 3. a support bar; 4. supporting the mold; 41. a supporting block; 411. an arc-shaped slot; 42. a push rod; 421. a pusher piston; 43. a base body; 431. a first pipeline; 432. a second pipeline; 433. a first piston block; 434. a first piston rod; 44. a sliding seat; 45. a telescopic cylinder; 451. a driving lever; 452. an active piston; 46. a master cylinder; 5. a preheating mechanism; 51. a heater; 52. a lifting cylinder; 53. a lifting lever; 6. and (4) preprocessing a pipe.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

Referring to fig. 1, the embodiment of the application discloses a pipe bending device, including base 1, two holders 2, bracing piece 3 and supporting die 4, base 1 has been seted up and has been supplied two holders 2 sliding connection on base 1 spout 11, two holders 2 clamping part sets up relatively, still set up on base 1 and have supplied supporting die 4 sliding connection to advance groove 12 on base 1, carry groove 12 communicates in the middle part of spout 11 perpendicularly, the extension line of carry groove 12 and the combination of the extension line of spout 11 become the T font, position between two holders 2 after supplying supporting die 4 to slide. The support rod 3 penetrates into the pre-processing pipe 6 along the length direction of the pre-processing pipe, the two ends of the pre-processing pipe 6 are fixed through the two clamping pieces 2, and then the support die 4 slides to the position below the pre-processing pipe 6 to bend the pre-processing pipe 6.

Referring to fig. 2, specifically, the pipe bending device further includes a preheating mechanism 5 for heating the pre-processing pipe 6, the preheating mechanism 5 in this embodiment is a heater 51, a lifting mechanism for pushing the heater 51 to move toward or away from the base 1 is disposed below the heater 51, the lifting mechanism includes a lifting cylinder 52 and a lifting rod 53 slidably connected in the lifting cylinder 52, the lifting cylinder 52 is fixedly connected to the bottom surface of the base 1, and one end of the lifting rod 53 away from the lifting cylinder 52 is connected to the heater 51. The base 1 is provided with a slot 13 for the air outlet pipe of the heater 51 to pass through on the moving path of the heater 51, the slot 13 is positioned at the central position of the sliding chute 11 in the length direction, and after the device is installed with the pre-processing pipe 6, the air outlet pipe of the heater 51 can penetrate through the base 1 through the slot 13 to be close to the pre-bending point of the pre-processing pipe 6, so as to heat the pre-bending point of the pre-processing pipe 6.

Referring to fig. 2 and 3, the holder 2 includes a slider 21, a support rod 22, a connecting block 23 and a clamping jaw 26 connected in sequence from bottom to top, the slider 21 is of a convex structure, the cross section of the sliding slot 11 is adapted to the shape of the slider 21, the holder 2 is connected to the base 1 through the slider 21 and the sliding slot 11 in a matching manner, the support rod 22 is fixedly connected to one side of the slider 21 away from the base 1, a hinge column 221 is fixedly connected to one end of the support rod 22 away from the slider 21, the support rod 22 is perpendicularly fixed to the center of the length direction of the hinge column 221, the connecting block 23 is a hollow rectangular block with two through sides, the connecting block 23 is sleeved on one end of the support rod 22 where the hinge column 221 is provided, two ends of the hinge column 221 respectively penetrate through two sides of the connecting block 23, the connecting block 23 is rotatably connected to the support rod 22, a torsion spring 222 is further sleeved on the hinge column 221, one end of the torsion spring 222 is connected to the other end of the support rod 22 and connected to the inner wall of the connecting block 23, so that one end of the connecting block 23 that the connecting block 23 is close to each other has a downward rotating trend, one end of the two connecting block 23 is further provided with a first spring 241, a rotating driving element 25, and a stepping motor 26 fixedly connected to the stepping motor. In addition, a plurality of shifting blocks 251 which are convenient for a person to shift the extension tube 24 are arranged on the outer wall of the connection end of the extension tube 24 and the rotary driving piece 25 along the circumferential direction at intervals. Stir extension tube 24 to being close to connecting block 23 direction, preprocessing pipe 6 lets out enough its space of installing, after two clamping jaws 26 are fixed to preprocessing pipe 6 both ends, control heater 51 wears to establish base 1 in heating preprocessing pipe 6 kink, rotate preprocessing pipe 6 through rotating driving piece 25 simultaneously and make the kink heat even, confirm after the heat time according to material nature, remove to keeping away from base 1 direction when closing heater 51, and begin to buckle preprocessing pipe 6.

Referring to fig. 3, the clamping jaw 26 includes a base 261, the base 261 is a cylindrical table, a positioning groove 2611 for the pre-processing pipe 6 to enter therein is disposed at a center portion of the base 261, the positioning groove 2611 is circular larger than the pipe diameter of the pre-processing pipe 6, three strip-shaped through grooves 2612 communicated with the positioning groove 2611 are disposed on the surface of the base 261, the through grooves 2612 are circumferentially disposed along a circle center of the surface of the base 261 and uniformly spaced, and all penetrate through an outer wall of the base 261, a resisting block 262 is slidably connected in the three through grooves 2612, an extending surface of the outer wall of the base 261 is penetrated through at one end of the resisting block 262 far away from the positioning groove 2611, one end of the resisting block 262 far away from the positioning groove 2611 is arc-shaped and has the same arc as the arc of the base 261, the resisting block 262 includes a resisting pipe portion 2621, a resisting rod portion 2622 and a convex block 2623 which are sequentially disposed, when the pre-processing pipe 6 is loaded into the clamping jaw 26, the resisting pipe portion 2621 abuts against the pipe 2621, the supporting rod 2621, the resisting pipe 2621 abuts against the supporting rod 2623 which penetrates through the supporting rod portion 2622. In addition, a second spring 2625 used for making the resisting block 262 have a tendency of moving in a direction away from the positioning groove 2611 is further arranged in the base 261, the second spring 2625 is abutted against the bump 2623, both sides of the bump 2623 are provided with limiting blocks 2626 for preventing the resisting block 262 from separating from the base 261, and the inner wall of the base 261 where the through groove 2612 is located is provided with a limiting groove 2627 for the limiting blocks to enter and slide along the length thereof. The limiting block tube supporting portion 2621 is further provided with a gasket (not shown) for increasing friction force during the supporting. Be provided with external screw thread 2613 on the base 261 outer wall, the base 261 overcoat is equipped with rather than endocentric control ring 263, be provided with on the control ring 263 inner wall with external screw thread 2613 complex internal thread 2632, annular guide slot 2631 has been seted up along its circumference to the control ring 263 upper surface, guide slot 2631 inclines to base 261 direction, support one side that piece 262 is close to control ring 263 and offer the chamfer 2624 that is used for with the inner wall butt of guide slot 2631 place and the inclination is the same. When the control ring 263 rotates to abut against the abutting block 262, the abutting block 262 is pushed towards the direction close to the positioning groove 2611, until the abutting block 262 abuts against the pre-processing pipe 6, so as to fix the pre-processing pipe 6, at this time, the second spring 2625 accumulates elastic potential energy, after the pre-processing pipe 6 is processed, the control ring 263 rotates towards the direction away from the abutting block 262, at this time, the elastic element potential energy is released, and the abutting block 262 is pushed to the initial position before abutting against the control ring 263, so as to facilitate the next use.

Referring to fig. 5, the supporting die 4 includes a supporting block 41, a pushing rod 42 and a base 43, the supporting block 41 is used for abutting a bending portion of the pre-processing pipe 6 after heating, the supporting block 41 is a triangle or an arch with a rounded corner, an arc slot 411 for fitting the shape of the pre-processing pipe 6 is formed in one side of the supporting block 41 for abutting the pre-processing pipe 6, the supporting block 41 is connected with the pushing rod 42 through threads, and the supporting block 41 can be replaced according to the angle required to be bent and the radian of the bending portion. A first pipeline 431 is vertically arranged in the seat body 43, one end of the propelling rod, which is far away from the supporting block 41, is vertically and slidably connected into the seat body 43 through the pipeline, the seat body 43 is of an inverted T shape and is slidably connected into the intake slot 12 in the base 1, one end of the base 1 is further provided with a sliding mechanism for driving the seat body 43 to slide, the sliding mechanism comprises a sliding cylinder 14, the sliding cylinder 14 is slidably connected with a sliding rod 141, one end of the sliding rod 141, which is far away from the sliding cylinder 14, is provided with a sliding seat 44, the seat body 43 is fixedly connected onto the sliding seat 44, one side of the seat body 43, which is close to the sliding cylinder 14, is further provided with a driving cylinder 46, an driving rod 451 penetrates through the driving cylinder 46, one end of the driving rod 451, which is far away from the seat body 43, is provided with a telescopic cylinder 45 for controlling the driving rod 451 to slide along the length direction of the intake slot 12, one end of the driving rod 451, which is far away from the telescopic cylinder 45, is provided with a driving piston 452, the driving cylinder 46 is communicated with the first pipeline 431, and the communicating part is filled with a transmission medium, which is hydraulic oil. When the telescopic cylinder 45 drives the driving rod 451 to move in a direction away from the telescopic cylinder 45, the driving rod 451 drives the driving piston 452 to push hydraulic oil to move, so that the pushing piston is pushed to slide, and the pushing rod drives the supporting block 41 to move upwards; when the telescopic cylinder 45 pulls the driving rod 451 back, the driving rod 451 drives the driving piston 452 to pull the hydraulic oil to reset, so that the pushing rod drives the supporting block 41 to move downwards.

Referring to fig. 2 and fig. 6, in addition, the base 43 is further provided with a second pipeline 432 in the horizontal direction, the first pipeline 431 is perpendicular to the center position of the length direction of the second pipeline 432, the second pipeline 432 is connected with two first piston blocks 433 which deviate from each other in a sliding manner, one sides of the two first piston blocks 433 which deviate from each other are fixedly connected with a first piston rod 434, the first piston rod 434 can penetrate through the base 43 along the length direction of the second pipeline 432, the second pipeline 432 is communicated with the first pipeline 431 and the master cylinder 46, and the communicating portion is filled with hydraulic oil. When the telescopic cylinder 45 drives the driving rod 451 to move in a direction away from the telescopic cylinder 45, the driving rod 451 drives the driving piston 452 to push hydraulic oil, and drives the two first piston blocks 433 to move in a direction which is horizontal and deviates from each other, so that the first piston rod 434 penetrates through the base body 43; when the driving rod 451 moves in the reverse direction, the first piston rod 434 is retracted into the housing 43.

The base 1 is provided with second piston rods 15 at positions corresponding to the positions of the two first piston rods 434, the following structures are symmetrically arranged and only expressed by a single side, a first connecting groove 152 for the second piston rod 15 to slide is arranged in the base 1, a second piston block 151 is fixedly connected to one end of the second piston rod 15 far away from the first piston rod 434, a third pipeline 153 for the second piston block 151 to move is arranged in the base 1, a double-headed piston rod 16 is further arranged in the base 1 on an extension line of the moving path of the second piston block 151, the double-headed piston rod 16 comprises a third piston block 161, a third piston rod 162 and a fourth piston block 163 which are sequentially arranged, a space of the third pipeline 153 between the third piston block 161 and the second piston block 151 is filled with hydraulic oil, a second connecting groove for the third piston rod 162 to slide, a fourth pipeline 164 and an up-turning pipeline 17 are also arranged in the base 1, the fourth piston block 163 slides in the fourth pipeline 164, the fourth pipeline 164 is communicated with the upper turning pipeline 17, the fourth pipeline 164 is filled with hydraulic oil on one side of the fourth piston block 163 away from the third piston rod 162 and is filled with the upper turning pipeline 17, the upper turning pipeline 17 is wide at the bottom and narrow at the top, a parallel fifth pipeline 181 is further arranged above the fourth pipeline 164 on the base 1, the fifth pipeline 181 is communicated with the narrow part at the upper end of the upper turning pipeline 17, a fifth piston block 18 is connected in the fifth pipeline 181 in a sliding manner, and the hydraulic pressure passes through the fifth pipeline 181 to the surface of the fifth piston block 18, one end of the fifth piston block 18 far away from the upward-turning pipeline 17 is fixedly connected with a connecting piston rod 211, one end of the connecting piston rod 211 far away from the fifth piston block 18 is connected to the sliding block 21, and one side of the sliding block 21 far away from the connecting piston rod 211 is abutted with a return spring 212 which enables the sliding block 21 to have the tendency of moving in the direction of the upward-turning pipeline 17. After the pre-processing pipe 6 is heated, the seat body 43 moves to the position where the first piston rod 434 is aligned with the second piston rod 15, the telescopic cylinder 45 pushes the driving rod 451 to move in the direction away from the telescopic cylinder 45, so as to drive the supporting block 41 to move upwards, meanwhile, the first piston rod 434 is pushed out of the seat body 43, and the second piston rod 15 abutted against the first piston rod 434 is pushed, because of the hydraulic oil in the third pipeline 153, the second piston rod 15 is linked with the double-head piston rod 16, the double-head piston rod 16 is driven to push the fourth pipeline 164 and compress the hydraulic oil in the upper turning pipeline 17, so that the connecting piston rod 211 drives the slider 21 to move together, and finally, when the supporting block 41 abuts against the pre-processing pipe 6 to be bent, the clamping piece 2 moves adaptively along with the bending of the pre-processing pipe 6, and simultaneously, the clamping piece 2 exerts slight downward pressure on the pre-processing pipe 6 at two ends of the pre-processing pipe 6 under the action of the torsion spring 222, so that the pre-processing pipe 6 is bent more uniformly.

It should be noted that the pipeline in the base 1 may be embedded in the base 1 by using a molded pipe, and the embodiment is described by using a groove formed in the base 1 for convenience of principle expression.

The implementation principle of the pipe bending device in the embodiment of the application is as follows:

the supporting rod 3 penetrates through the preprocessed pipe 6, the shifting block 251 on the clamping piece 2 is shifted to enable the preprocessed pipe 6 to be arranged at a proper position between the two clamping jaws 26 so that the two ends of the preprocessed pipe 6 can penetrate into the positioning groove 2611, the control ring 263 is rotated to the position of the preprocessed pipe 6, the supporting block 262 is driven to clamp the preprocessed pipe 6 and the supporting rod 3, and therefore the preprocessed pipe 6 is installed; starting the device, lifting the heater 51 to a position where the air outlet is close to the bent part of the pre-processing pipe 6, starting to heat the pre-processing pipe 6, simultaneously rotating the driving piece 25 to drive the pre-processing pipe 6 to rotate, uniformly heating the bent part of the pre-processing pipe 6, and bending the pre-processing pipe 6 after the bent part is properly softened; the heater 51 returns to the initial position, the sliding cylinder 14 pushes the sliding seat 44, the support die 4 fixedly connected to the sliding seat 44, and the telescopic cylinder 45 to move together to the position below the bending portion of the pre-processed pipe 6, the telescopic cylinder 45 pushes the driving rod 451 to move towards the inside of the seat body 43, so that the pushing rod 42 drives the support block 41 to abut against the pre-processed pipe 6 and continuously apply force to the bending portion, meanwhile, the driving rod 451 drives the first piston rod 434 to abut against and push the second piston rod 15 to move, and the clamping member 2 is finally pushed to move through the second piston rod 15, the double-headed piston rod 16, and the connecting piston rod 211 in sequence, so as to complete the process that when the pre-processed pipe 6 is bent by the support block 41, the clamping member 2 is adaptively moved along with the bending of the pre-processed pipe 6, and meanwhile, the clamping member 2 applies slight downward force to the pre-processed pipe 6 at two ends under the action of the torsion spring 222, so that the pre-processed pipe 6 is bent more uniformly.

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

Claims

1. A pipe bending device is characterized in that: the method comprises the following steps:

a base (1);

the pipe pre-processing device comprises two clamping pieces (2), wherein the two clamping pieces (2) are connected to a base (1) in a sliding mode at intervals along a straight line, clamping parts of the two clamping pieces (2) are arranged oppositely, the two clamping pieces (2) only slide towards directions close to or away from each other at the same time, and each clamping piece (2) comprises a clamping jaw (26), a connecting mechanism used for enabling the clamping jaw (26) to rotate along the vertical direction and a rotating driving piece (25) used for simultaneously rotating the two clamping jaws (26) in the same direction to drive a pre-processing pipe (6) to rotate by taking the axis of the pre-processing pipe (6) as a central line;

the preheating mechanism (5) is arranged between the two clamping pieces (2) in the base (1) and comprises a heater (51) and a lifting mechanism for enabling the heater (51) to be close to or far away from the preprocessed pipe (6) fixed by the clamping pieces (2);

support mould (4), sliding connection just can move to two on base (1) holder (2) intermediate position for carry out the plasticity to the kink of preprocessing pipe (6), including pedestal (43), supporting shoe (41) and be used for promoting from bottom to top supporting shoe (41) is in order to exert the advancing mechanism of bending force to preprocessing pipe (6), pedestal (43) sliding connection in base (1), advancing mechanism locates in pedestal (43) and wear to establish pedestal (43) locate pedestal (43) one end with supporting shoe (41) are connected, base (1) still is provided with and is used for promoting support mould (4) are close to the glide machanism who is close to or keeps away from to preprocessing pipe (6).

2. The pipe bending apparatus according to claim 1, wherein: the vertical first pipeline (431) of having seted up in pedestal (43), advancing mechanism includes sliding connection in push rod (42) in first pipeline (431), push rod (42) are kept away from the one end of pedestal (43) with supporting shoe (41) can dismantle the connection, pedestal (43) in being close to sliding mechanism's one side still is provided with master cylinder (46), master cylinder (46) with first pipeline (431) intercommunication, sliding connection has master rod (451) in master cylinder (46), the one end that master cylinder (46) were kept away from to master rod (451) is connected with control the telescopic cylinder (45) that master rod (451) slided, push rod (42) are close to the one end of master rod (451) is provided with the propulsion piston, the one end that master rod (451) is close to the push rod is provided with master piston (452), master cylinder (46) with be full of transmission medium in first pipeline (431) between propulsion piston and master piston (452).

3. The pipe bending apparatus according to claim 2, wherein: still be provided with in pedestal (43) and deviate from each other or be close to two first piston rods (434) of motion each other along same straight line level, just first piston rod (434) can wear to establish pedestal (43), two the one end that first piston rod (434) are close to each other all is provided with first piston piece (433), seted up the confession in pedestal (43) second pipeline (432) that first piston piece (433) slided, first pipeline (431) perpendicular intercommunication with second pipeline (432) length direction's center, and second pipeline (432) are two be full of equally between first piston piece (433) transmission medium, in base (1) with pedestal (43) remove to two after preprocessing pipe (6) correspond to the position all be provided with the confession on first piston rod (434) corresponding position promote its second piston rod (15) that move behind first piston rod (434) butt, two the equal rigid coupling in one side that holder (2) deviate from each other has the connecting piston rod (211) that sets up along the direction that slides, and supply piston rod (211) to slide in the second piston rod (211) connection pipeline (211) connection medium is connected the same.

4. The pipe bending apparatus according to claim 1, wherein: clamping jaw (26) include base (261), constant head tank (2611) that supplies preprocessing pipe (6) to get into is seted up at base (261) center, it sets up a plurality of logical groove (2612) that communicate with constant head tank (2611) respectively to go up the circumference interval in base (261), sliding connection has to support block (262) in logical groove (2612), support block (262) are kept away from the one end of constant head tank (2611) is worn to establish base (261) outer wall extending face and this end is provided with chamfer (2624), threaded connection has on base (261) outer wall can follow control ring (263) that base (261) length direction removed, control ring (263) can follow base (261) length direction move to with support block (262) on chamfer (2624) butt and promotion support block (262) slide.

5. A pipe bending apparatus according to claim 3, wherein: holder (2) are still including slider (21), branch (22) and connecting block (23) that set gradually, base (1) surface is followed spout (11) have been seted up on holder (2) moving path, holder (2) pass through slider (21) with spout (11) sliding connection in on base (1), branch (22) connect in slider (21) is kept away from one side of base (1), connecting block (23) articulated with on branch (22), just be provided with in connecting block (23) and make it have torsional spring (222) of downward motion trend, connecting block (23) with torsional spring (222) is constituteed slewing mechanism.

6. The pipe bending apparatus according to claim 5, wherein: an extension tube (24) is arranged between the connecting block (23) and the clamping jaw (26), and a first spring (241) is sleeved outside the extension tube (24).

7. The pipe bending apparatus according to claim 2, wherein: glide machanism include the rigid coupling in the cylinder (14) and the sliding connection of sliding on base (1) slide pole (141) in the cylinder (14) of sliding, still be provided with under pedestal (43) and slide seat (44), telescopic cylinder (45) also locate slide on the seat (44), slide pole (141) keep away from the one end butt of the cylinder (14) of sliding in slide on the seat (44).

8. The pipe bending apparatus according to claim 5, wherein: and a return spring (212) which is abutted against the sliding block (21) so that the clamping piece (2) has a moving trend towards the direction of the connecting piston rod (211) is further arranged in the sliding groove (11).

9. The pipe bending apparatus according to claim 1, wherein: one side of the supporting block (41) which is abutted to the preprocessed pipe (6) is provided with an arc-shaped groove (411) for the preprocessed pipe (6) to enter along the length direction.