CN114453462A - Left-right co-bending pipe bending machine with automatic head falling function and machining method thereof - Google Patents
Left-right co-bending pipe bending machine with automatic head falling function and machining method thereof Download PDFInfo
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- CN114453462A CN114453462A CN202210120765.3A CN202210120765A CN114453462A CN 114453462 A CN114453462 A CN 114453462A CN 202210120765 A CN202210120765 A CN 202210120765A CN 114453462 A CN114453462 A CN 114453462A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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Abstract
The invention relates to a left and right co-bending pipe bending machine with an automatic end-dropping function and a processing method thereof, wherein the scheme comprises a rack, and a feeding clamping mechanism, a feeding mechanism and a die guiding mechanism which are arranged on the rack; the mechanism can realize the switching of the turning function of the pipe fitting and the left bending and right bending functions of the pipe fitting and realize the left bending and right bending operations of the pipe fitting. This application has the curved function of turning around, bends to suitable position back from one end, and automatic turning around begins to bend from another, and the pipe fitting hangs out length and only has half of original traditional return bend, and the pipe fitting is interfered for a short time, and the shake is little among the return bend process, can avoid the pipe fitting to warp, and the quality is showing and is improving to guarantee the processingquality of pipe fitting, can show improvement machining efficiency, every layer of mould all can be left side curved or right side curved, return bend strong adaptability, and it is little to interfere.
Description
Technical Field
The invention relates to the technical field of pipe bending machines, in particular to a left and right co-bending pipe bending machine with an automatic end-dropping function and a machining method thereof.
Background
In the path of conveying and connecting, the pipeline is an indispensable connecting piece, for example, in the pipeline conveying of media such as liquid, gas, the return bend is an indispensable connecting piece to change the trend of pipeline, conveniently carry. The elbow has great demand in many places, and the requirement to the elbow is different, and some have special requirement to the installation space, for example the space size requirement is the better less, thereby requires the elbow installation compacter, and the demand is bigger.
However, the conventional pipe bender is not well suitable for processing slender pipes, and the conventional pipe bending process is generally divided into two types: 1. one is to bend the pipe towards one direction, without adopting the turning bend, because the slender pipe is bent to the rear section, the pipe is easy to bend and deform because the bent pipe at the front end is too long and the strength of the pipe is low, the pipe shakes seriously in the pipe bending process, the pipe bends deform seriously, and the quality of the product is influenced; in addition, the bent pipe is long in overhang, the interference range is large during bending, and interference is easy. 2. The other is that manual operation is needed in the reversing pipe bending process, and in the process, the bent half of the slender pipe is manually turned around and repositioned, so that the problem of poor positioning precision exists, the shape consistency of the bent pipe is easily caused to be poor, the processing quality is difficult to control, and the problem of further reduction of the processing efficiency is caused. Meanwhile, the existing pipe bender cannot bend left and right, and can only bend a pipe at one end.
Therefore, a left and right co-bending pipe bending machine with an automatic turning function and a machining method thereof are needed, wherein the left and right co-bending pipe bending machine has the turning function, can automatically turn around and begin to bend from one end to the other end after being bent from one end to a proper position, and can avoid pipe deformation.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a left and right co-bending pipe bending machine with an automatic end-dropping function.
In order to realize the purpose of the invention, the invention adopts the following technical scheme: the left and right co-bending pipe bending machine with the automatic end falling function comprises a rack, and a feeding clamping mechanism, a feeding mechanism, a die guiding mechanism, a machine head mechanism, a rotary driving mechanism, an upper die changing driving mechanism, a lower die changing driving mechanism and a left and right die changing driving mechanism which are arranged on the rack;
the feeding clamping mechanism is connected with the feeding mechanism and can clamp the pipe fitting and drive the pipe fitting to rotate so as to change the space angle of the pipe fitting;
the feeding mechanism is used for driving the feeding clamping mechanism to move back and forth along the length direction of the rack so as to realize the feeding operation of the pipe fitting;
the die guide mechanism is arranged between the feeding clamping mechanism and the machine head mechanism and can clamp and release the pipe fitting so as to limit the freedom degree of the pipe fitting in the width direction and the height direction of the rack, and when the die guide mechanism releases the pipe fitting, the height of the top of the die guide mechanism is lower than that of the bottom of the pipe fitting;
the machine head mechanism is arranged at one end of the rack and at least provided with two symmetrically arranged circular dies, the circular dies are driven to switch a loosening or clamping state by driving the plurality of first drivers, and when the circular dies are in the loosening state, the top height of the circular dies is lower than the bottom height of the pipe fitting;
the left and right die changing driving mechanism is connected with the machine head mechanism and is used for driving the machine head mechanism to move back and forth along the width direction of the machine frame;
the upper and lower die changing driving mechanism is connected with the machine head mechanism and is used for driving the machine head mechanism to lift along the height direction of the machine frame;
the rotary driving mechanism is in driving connection with the machine head mechanism and can drive the machine head mechanism to rotate and can be matched with the machine head mechanism, the left and right die changing driving mechanisms and the upper and lower die changing driving mechanisms to realize the switching of the turning function of the pipe fitting and the left bending and right bending functions of the pipe fitting and realize the left bending and right bending operations of the pipe fitting.
The working principle and the beneficial effects are as follows: 1. compared with the prior art, this application is when processing the pipe fitting, one of them side circle mould through every group circle mould with aircraft nose mechanism loosens, the opposite side keeps the clamping state, the circle mould that so keeps the clamping state just can regard as the circle mould of bending, and the moving trajectory when loosening the circle mould of one side and then can dodging the pipe fitting and bending, so just can realize left side bending and the operation of right side bending, can accomplish left side bending and the operation of right side bending simultaneously on same equipment, and do not need artifical unloading again, full automatic operation, adaptable complicated pipe fitting return bend, it is few to control the bending switching action, the machining efficiency is showing and being improved, and every layer of mould all can left side bending or right side bending, return bend strong adaptability, it is little to interfere.
2. Compared with the prior art, in the process that the pipe fitting is clamped and moved by the feeding and clamping mechanism, the mould guide mechanism can play a certain supporting effect on the pipe fitting when the film is changed up and down, and does not limit the degree of freedom of the pipe fitting moving back and forth along the length direction of the frame, so that the occurrence of the condition that the pipe fitting is easy to deform due to the longer pipe fitting can be obviously reduced, and as long as the positions of the die guide mechanism, the machine head mechanism and the feeding clamping mechanism are reasonably arranged according to the length of the pipe fitting to be processed, the pipe fitting can be completely prevented from bending and deforming due to gravity during processing, meanwhile, multiple groups of circular dies and guide dies can be selected according to the length of the pipe fitting to better support the pipe fitting, when the upper die changing driving mechanism and the lower die changing driving mechanism drive the machine head mechanism to be adjusted up and down, the pipe fitting clamping device can be matched with a feeding clamping mechanism to play a role in clamping and fixing the pipe fitting, so that the pipe fitting is prevented from sagging and deforming;
3. compared with the prior art, the pipe fitting can automatically turn around from the bent pipe to the middle, the hanging length of the pipe fitting is only half of that of the traditional bent pipe, the interference of the pipe fitting is small, the shaking is small in the pipe bending process, the quality is obviously improved, and therefore the situation that the pipe fitting is easy to deform due to the fact that the pipe fitting is long can be obviously reduced after the pipe fitting is reversed;
4. compared with the prior art, the head mechanism not only can rotate by itself so as to realize the turning operation of the elbow pipe and the pipe fitting, but also can perform height adjustment under the driving of the upper die changing driving mechanism and the lower die changing driving mechanism, and perform horizontal position adjustment in the width direction of the rack under the driving of the left die changing driving mechanism and the right die changing driving mechanism so as to better perform the elbow pipe operation.
Furthermore, the feeding clamping mechanism, the die guiding mechanism and the machine head mechanism are positioned on the same straight line. The arrangement ensures that the pipe fitting is always in a straight state during machining, and the parts of the feeding clamping mechanism, the die guiding mechanism and the machine head mechanism for clamping the pipe fitting are also positioned at the same height, so that the machining quality is ensured.
Further, the feeding clamping mechanism comprises a main spindle box, a main spindle arranged on the main spindle box, a second driver used for driving the main spindle to rotate, a clamping part arranged at the end part of the main spindle and a third driver used for driving the clamping part to loosen and clamp.
This setting, can drive the clamping part through the second driver and carry out rotation operation, so just can avoid the position of return bend after the pipe fitting turns around, centre gripping pipe fitting from other angles to centre gripping pipe fitting more conveniently, third driver accessible common link mechanism drives the clamping part and presss from both sides tightly and loosen the operation to the pipe fitting in addition, and the headstock can play the effect of parts such as protection and installation main shaft, still plays the effect of being connected with feed mechanism.
Further, the headstock is slidably coupled to the frame and drivingly coupled to the feed mechanism/the headstock is drivingly coupled to the feed mechanism, and the feed mechanism is drivingly coupled to the frame.
This setting can conveniently realize that feed mechanism drives the headstock and removes along frame length direction, can adopt the common rack and pinion transmission in this field or lead screw transmission or other transmission modes, and the guide rail can be connected through linear guide between headstock or the feed mechanism, guarantees linear motion precision and minimum frictional force.
Furthermore, the guide die mechanism comprises at least one group of symmetrically arranged guide dies and a fourth driver for driving the two oppositely arranged guide dies to be separated and close, and the two guide dies are separated and close along the width direction of the rack.
According to the arrangement, the fourth driver synchronously drives the guide dies to be separated and close so as to realize the supporting operation of the pipe fitting, and the freedom degrees of the pipe fitting in the width direction and the height direction of the rack are limited under the condition that the pipe fitting is not hindered from moving in the length direction of the rack, namely the guide dies can rotate and are provided with arc-shaped grooves matched with the outer contour of the pipe fitting.
Further, the fourth driver drives each group of guide dies to be separated and close through the first connecting rod structure; when the fourth driver drives each group of guide dies to be separated through the first connecting rod structure, the height of the guide dies is gradually reduced to be capable of avoiding the pipe fitting; when the fourth driver drives each group of guide dies to be close together through the first connecting rod structure, the height of the guide dies is gradually increased to be capable of clamping the pipe fitting.
This setting, as long as first link structure sets for good size, just can avoid producing the interference when turning around to the pipe fitting promptly in every group guide die separately, can also dodge pay-off fixture and feed mechanism to pay-off fixture's part gets into guide die mechanism and circle mould middle zone, return bend under this state, pay-off fixture presss from both sides tight pipe fitting, and the fungible guide die function. Therefore, the pipe bending machine can be suitable for pipe bending operation of shorter pipes, and pipe bending of most lengths can be met as long as a plurality of guide die mechanisms are arranged according to the length of the pipe.
Furthermore, the machine head mechanism comprises at least one group of symmetrically arranged circular dies, a rotating shaft in driving connection with the rotary driving mechanism and second connecting rod structures in one-to-one correspondence with the circular dies, one end of each second connecting rod structure is connected with one circular die, and the other end of each second connecting rod structure is connected with a first driver.
This setting through second connecting rod structure, can make the circle mould can open more thoroughly, thoroughly dodges the pipe fitting for both sides circle mould all has and opens alone and press from both sides tight function, can directly switch the right side curved mode or switch the left side curved mode from the right side curved during the return bend, need not too much action.
Furthermore, the machine head mechanism further comprises a die holder, guide grooves in one-to-one correspondence with the second connecting rod structures are formed in the die holder, and a guide block matched with the guide grooves is arranged on each second connecting rod structure, so that the force output direction of the first driver is corrected through the matching of the guide grooves and the guide blocks.
This setting can guarantee better that the pipe fitting can be cliied correctly to the circle mould to effectively reduce the fault rate.
Further, the up-down die changing driving mechanism comprises a fifth driver and a first transmission structure for connecting the fifth driver and the machine head mechanism, so that the machine head mechanism can be driven by the fifth driver to move up and down along the height direction of the machine frame; the left and right die changing driving mechanism comprises a sixth driver and a second transmission structure for connecting the sixth driver and the machine head mechanism, so that the machine head mechanism can be driven by the sixth driver to move back and forth along the width direction of the machine frame.
This setting, because not only there is the groove that is used for the return bend together on the circle mould, be equipped with the multiple groove of co-altitude not usually, the size in every kind of groove is inconsistent, so can be fit for the pipe fitting of different pipe diameters size, so realize altitude mixture control through upper and lower retooling actuating mechanism drive aircraft nose mechanism up-and-down motion, thereby switch different grooves and process different pipe fittings, and can also drive aircraft nose mechanism decline and dodge the pipe fitting completely after loosening the pipe fitting, it rises to the initial position again to rotate rapidly, show and improve the execution speed, compatibility has also been improved, make this bending machine not only can process the pipe fitting of different length, also can process the pipe fitting of different pipe diameters, application scope is wide.
The machining method of the left and right co-bending pipe bending machine with the automatic end falling function comprises the following machining steps:
s000, switching the height of a machine head mechanism according to the pipe diameter of the pipe to enable a groove on each circular die to correspond to the pipe to be processed, simultaneously clamping the pipe by the feeding clamping mechanism and the die guiding mechanism, enabling one circular die on one side of each group of circular dies on the machine head mechanism to be in a clamping state, enabling the other circular die on the other side of each group of circular dies on the machine head mechanism to be in an opening state, and drawing the pipe to a set position through a feeding mechanism;
s100, when the pipe fitting is located at a set position, the circular die on the other side is switched to a clamping state, and the pipe fitting is completely fixed at the moment;
s200, the machine head mechanism rotates towards a set direction, the feeding mechanism moves towards the machine head mechanism to feed, and the left and right die changing driving mechanisms drive the machine head mechanism to move towards the set direction, so that the first pipe bending is completed;
s300, if the pipe bending is finished, loosening the pipe fitting, and taking down the pipe fitting to finish machining; if the pipe bending is required to be continued, selecting one side of each group of circular dies corresponding to the pipe bending direction to open, enabling the other side of each group of circular dies to be in a clamping state, and enabling the feeding mechanism to move towards the machine head mechanism to feed materials;
s400, repeating the steps S100-S300 until all the pipe bending at one end of the pipe fitting is finished;
s500, the machine head mechanism rotates to an initial position and clamps the pipe fitting through clamping the round die on the other side, the pipe fitting is simultaneously loosened by the feeding clamping mechanism and the die guiding mechanism, and the feeding clamping mechanism returns to the initial position;
s600, rotating the machine head mechanism by 180 degrees to turn the pipe fitting, and synchronously adjusting the direction of the pipe fitting so as to enable the pipe fitting to be clamped by the feeding clamping mechanism;
s700, moving the feeding clamping mechanism to a set position to clamp the pipe fitting, and after the pipe fitting is clamped, releasing pressure of each group of round dies and moving the feeding clamping mechanism back;
s800, after the bent pipe of the pipe fitting passes through a die guide mechanism, clamping the pipe fitting by the die guide mechanism;
and S900, repeating the steps S100-S300 until all the pipe fittings are bent, loosening the pipe fittings, and taking down the pipe fittings to finish the processing.
By adopting the steps, the pipe bending at two ends of one pipe fitting can be completed quickly and efficiently, the pipe fitting is ensured not to droop and deform, the processing quality is improved, and the processing efficiency is also improved.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a schematic view of the feed clamping mechanism of the present invention;
FIG. 4 is a schematic view of the die guiding mechanism of the present invention;
FIG. 5 is a first structural view of a handpiece mechanism of the present invention;
FIG. 6 is a second structural view of the head mechanism of the present invention;
FIG. 7 is a schematic structural view of a left-right die change driving mechanism of the present invention;
FIG. 8 is a schematic structural view of the upper and lower die change driving mechanism of the present invention;
fig. 9-20 are schematic diagrams of the steps of the process of the present invention.
In the figure, 1, a frame; 2. a feeding clamping mechanism; 3. a feed mechanism; 4. a die guide mechanism; 5. a machine head mechanism; 6. a rotation driving mechanism; 7. a left and right die change driving mechanism; 8. an upper and lower die change driving mechanism; 9. a pipe fitting; 21. a main spindle box; 22. a main shaft; 23. a second driver; 24. a clamping portion; 25. a third driver; 26. a bevel gear; 27. a gear; 41. guiding a mold; 42. a fourth driver; 43. a first link structure; 51. a circular mold; 52. a first driver; 53. a rotating shaft; 54. a second link structure; 55. a die clamping seat; 551. a guide groove; 541. a guide block; 56. a machine head box body; 71. a sixth driver; 72. a second transmission structure; 81. a fifth driver; 82. a first transmission structure.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, the above terms should not be construed as limiting the present invention.
In the case of the example 1, the following examples are given,
as shown in fig. 1-2, the left and right pipe bending machine with automatic head dropping function comprises a frame 1, and a feeding clamping mechanism 2, a feeding mechanism 3, a die guiding mechanism 4, a machine head mechanism 5, a rotary driving mechanism 6, an upper and lower die changing driving mechanism 8 and a left and right die changing driving mechanism 7 which are arranged on the frame 1;
preferably, when the pipe fitting 9 is machined and each mechanism is located at an initial position, the feeding clamping mechanism 2, the die guiding mechanism 4 and the machine head mechanism 5 are located on the same straight line, and the parts of the feeding clamping mechanism 2, the die guiding mechanism 4 and the machine head mechanism 5, which clamp the pipe fitting 9, are also located at the same height, so that the machining quality is ensured.
As shown in fig. 3, the feeding and clamping mechanism 2 is connected to the feeding mechanism 3, and can clamp the pipe 9 and drive the pipe 9 to rotate, so as to change the spatial angle of the pipe 9. The feeding clamping mechanism 2 comprises a main spindle box 21, a main spindle 22 mounted on the main spindle box 21, a second driver 23 used for driving the main spindle 22 to rotate, a clamping part 24 arranged at the end part of the main spindle 22 and a third driver 25 used for driving the clamping part 24 to loosen and clamp, the main spindle box 21 is connected with the machine frame 1 in a sliding mode and is in driving connection with the feeding mechanism 3/the main spindle box 21 is connected with the feeding mechanism 3, and the feeding mechanism 3 is in driving connection with the machine frame 1. The second driver 23 can drive the clamping part 24 to rotate, so that the pipe 9 can be clamped from other angles after the pipe 9 turns around, the clamping part 24 can be driven by the third driver 25 through a common connecting rod mechanism to clamp and loosen the pipe 9, the spindle box 21 can play a role in protecting and mounting components such as the spindle 22 and the like, and the feeding mechanism 3 can also play a role in being connected with the feeding mechanism 3, the feeding mechanism 3 can conveniently drive the spindle box 21 to move along the length direction of the rack 1, a common gear 27 rack transmission or lead screw transmission or other transmission modes in the field can be adopted, the guide rail can be connected with the spindle box 21 or the feeding mechanism 3 through a linear guide rail, and the linear motion precision and the minimum friction force are ensured.
Preferably, the second driver 23 may adopt a common servo motor in combination with a speed reducer, and the speed reducer drives the bevel gear 26 to rotate the gear 27 mounted on the main shaft 22, so as to drive the main shaft 22 to rotate, and the third driver 25 may be a common air cylinder or oil cylinder or electric cylinder, and drives a common link mechanism to realize the operation of loosening and clamping the clamping portion 24.
Specifically, the feeding mechanism 3 is used for driving the feeding clamping mechanism 2 to move back and forth along the length direction of the rack 1 so as to realize the feeding operation of the pipe fitting 9, wherein the feeding mechanism 3 is already explained in the above section for the feeding clamping mechanism 2, and the feeding mechanism 3 actually also adopts a transmission structure such as a servo motor for driving a gear 27 rack and the like so as to drive the gear 27 box to move back and forth on a linear guide rail of the rack 1, so that extremely high-precision positioning can be realized.
As shown in fig. 4, in particular, the die guide mechanism 4 is disposed between the feeding and clamping mechanism 2 and the head mechanism 5, and can clamp and unclamp the pipe 9 to limit the freedom of the pipe 9 in the width direction and the height direction of the rack 1, and when the die guide mechanism 4 unclamps the pipe 9, the height of the top of the die guide mechanism 4 is lower than the height of the bottom of the pipe 9; the guide die mechanism 4 comprises at least one group of symmetrically arranged guide dies 41 and a fourth driver 42 for driving the two oppositely arranged guide dies 41 to be separated and closed, the two guide dies 41 are separated and closed along the width direction of the rack 1, and the fourth driver 42 drives each group of guide dies 41 to be separated and closed through a first connecting rod structure 43; when the fourth driver 42 drives each set of guide dies 41 to be separated through the first link structure 43, the height of the guide dies 41 is gradually reduced to be able to avoid the pipe 9; when the fourth driver 42 drives each set of guide dies 41 to close up through the first link structure 43, the height of the guide dies 41 gradually rises to be capable of clamping the pipe fitting 9, and meanwhile, the circular dies 51 and the guide dies 41 in the application can select multiple sets according to the length of the pipe fitting 9, so that the pipe fitting 9 is better supported.
Preferably, the fourth actuator 42 may be a conventional air cylinder or oil cylinder or electric cylinder, and the fourth actuator 42 drives the guide dies 41 to move apart and close together synchronously through the first link structure 43 to realize the supporting operation of the pipe 9, so as to limit the freedom of the pipe 9 in the width direction and the height direction of the rack 1 without hindering the movement of the pipe 9 in the length direction of the rack 1, i.e. the guide dies 41 are rotatable and have arc-shaped grooves matched with the outer contour of the pipe 9. As long as first link structure 43 sets for the size, can be when every group guide die 41 is separately, avoid producing the interference when turning round to pipe fitting 9 promptly, can also dodge pay-off fixture 2 and feed mechanism 3 to pay-off fixture 2's part gets into guide die mechanism 4 and circle mould 51 middle zone, and the return bend under this state, pay-off fixture 2 presss from both sides tight pipe fitting 9, the fungible guide die 41 function. Therefore, the pipe bending machine can be suitable for the pipe bending operation of the short pipe fittings 9, and the pipe bending of the pipe fittings 9 with most lengths can be met as long as a plurality of guide die mechanisms 4 are arranged according to the length of the pipe fittings 9.
As shown in fig. 5, specifically, the head mechanism 5 is disposed at one end of the frame 1, and is provided with at least two symmetrically disposed circular dies 51, each circular die 51 is driven by driving a plurality of first drivers 52 to switch between a releasing state and a clamping state, and when the circular dies 51 are in the releasing state, the top height of the circular dies 51 is lower than the bottom height of the pipe 9; the machine head mechanism 5 includes at least one set of symmetrical circular dies 51, a rotating shaft 53 in driving connection with the rotation driving mechanism 6, second connecting rod structures 54 corresponding to the circular dies 51 one by one, and a die holder 55, one end of each second connecting rod structure 54 is connected with one circular die 51, the other end is connected with a first driver 52, a guide groove 551 corresponding to the second connecting rod structure 54 one by one is arranged on the die holder 55, and a guide block 541 matched with the guide groove 551 is arranged on each second connecting rod structure 54, so that the correction of the output direction of the first driver 52 is realized through the matching of the guide groove 551 and the guide block 541. Through second connecting rod structure 54, can make circle mould 51 open more thoroughly, thoroughly dodge pipe fitting 9 for both sides circle mould 51 all has and opens alone and presss from both sides tight function, can directly switch from the left side curved mode or switch from the right side curved mode to the left side curved mode during the return bend, need not too much action.
As shown in fig. 5, in particular, the rotation driving mechanism 6 is drivingly connected to the head mechanism 5 and can drive the head mechanism 5 to rotate, and can cooperate with the head mechanism 5, the left-right die change driving mechanism 7, and the up-down die change driving mechanism 8 to realize the turning function of the pipe 9 and the function switching of the left bend and the right bend of the pipe 9, and to realize the left bend and the right bend operation of the pipe 9. In fact this application is when processing pipe fitting 9, through with the every group of circular mould 51 of aircraft nose mechanism 5 one of them side circular mould 51 loosen, the opposite side keeps the clamping state, so keep clamping state's circular mould 51 just can regard as the circular mould 51 of bending, and loosen the circular mould 51 of one side then can dodge the orbit when pipe fitting 9 bends, so just can realize left side bend and the operation of right side bend, can accomplish left side bend and the operation of right side bend simultaneously on same equipment, and do not need artifical unloading again, full automatic operation, adaptable complicated pipe fitting 9 return bend, it is few to control the curved switching action, and is showing and is improving machining efficiency.
In the left-hand bent state, the right circular die 51 is kept in a clamped state, that is, in an upward folded state in the drawing, the upper circular die 51 is kept in a clamped state, and the lower circular die 51 is opened to place the pipe 9 and clamp the pipe 9. And the reverse operation is performed when the bag is folded downwards.
Preferably, the first actuator 52 may be a common air cylinder or oil cylinder or electric cylinder, and the rotation driving mechanism 6 is also a common servo motor combined speed reducer, and is connected to the rotation shaft 53 through a coupling, so as to drive the head mechanism 5 to rotate, the head mechanism 5 is fixed at one end of the machine frame 1 through a head box 56, and the head mechanism 5 may be on the head box 56.
As shown in fig. 6, specifically, the left-right mold changing driving mechanism 7 is connected to the machine head mechanism 5 for driving the machine head mechanism 5 to move back and forth along the width direction of the machine frame 1, the left-right mold changing driving mechanism 7 includes a sixth driver 71 and a second transmission structure 72 for connecting the sixth driver 71 and the machine head mechanism 5, so that the machine head mechanism 5 can be driven by the sixth driver 71 to move back and forth along the width direction of the machine frame 1, and the left-right mold changing driving mechanism is actually a servo motor (the sixth driver 71) driving a slider of a linear guide to slide on the linear guide through a coupler and a ball screw (the second transmission structure 72), and the slider is connected to the machine head box 56 and is a common linear driving structure, and aims to drive the machine head mechanism 5 to move back and forth along the width direction of the machine frame 1, i.e. to move up and down in the drawing.
As shown in fig. 7, in particular, the up-down mold changing driving mechanism 8 is connected to the head box 56 of the head mechanism 5 for driving the head mechanism 5 to move up and down along the height direction of the rack 1, wherein the up-down mold changing driving mechanism 8 includes a fifth driver 81 and a first transmission structure 82 for connecting the fifth driver 81 and the head mechanism 5, so that the head mechanism 5 can be driven by the fifth driver 81 to move up and down along the height direction of the rack 1, wherein the fifth driver 81 is also a common servo motor, and the first transmission structure 82 is also a common ball screw or the like, and is substantially identical to the left-right mold changing driving mechanism 7 in structure, but different in movement direction, one responsible for the horizontal movement of the head mechanism 5, and the other responsible for the up-down movement of the head mechanism 5.
In the case of the example 2, the following examples are given,
the pipe bender of the embodiment 1 is adopted for processing, as shown in fig. 8 to 19, and the processing method of the left and right co-bending pipe bender comprises the following processing steps by adopting a top view:
s000, as shown in fig. 8, switching the height of the head mechanism 5 according to the pipe diameter of the pipe 9, so that the groove on the circular die 51 corresponds to the pipe 9 to be processed, the feeding and clamping mechanism 2 and the die guiding mechanism 4 simultaneously clamp the pipe 9, one circular die 51 of each group of circular dies 51 on the head mechanism 5 is in a clamping state, the other circular die 51 is in an opening state, and pulling the pipe 9 to a set position through the feeding mechanism 3;
in this step, because not only there is a groove that is used for the return bend on the circle mould 51, be equipped with the multiple groove of co-altitude not usually, the size of every kind of groove is inconsistent, so can be fit for the pipe fitting 9 of different pipe diameters size, so through upper and lower retooling actuating mechanism 8 drive aircraft nose mechanism 5 up-and-down motion realization altitude mixture control, thereby switch over different grooves and process different pipe fittings 9, and can also drive aircraft nose mechanism 5 after loosening pipe fitting 9 and descend and dodge pipe fitting 9 completely, rotate rapidly and return to initial position and rise again, show and improve the execution speed, compatibility has also been improved, make this bending machine not only can process pipe fitting 9 of different length, also can process pipe fitting 9 of different pipe diameters, application scope is wide.
S100, as shown in fig. 9, when the pipe 9 is located at the set position, the other side circular die 51 is switched to the clamping state, and at this time, the pipe 9 is completely fixed;
s200, as shown in figure 10, the machine head mechanism 5 rotates towards a set direction, the feeding mechanism 3 moves towards the machine head mechanism 5 for feeding, and the left and right die changing driving mechanisms 7 drive the machine head mechanism 5 to move towards the set direction, so that the first pipe bending is completed, wherein the right bending is shown in the figure; here, since the left-right mold changing drive mechanism 7 is intended to drive the head mechanism 5 to move horizontally to realize the interpolation motion, the left-right mold changing drive mechanism 7 drives the head mechanism 5 to move downward in the drawing as shown in fig. 10. If the pipe is bent to the left, the feeding mechanism 3 moves towards the machine head mechanism 5 to feed, and the left and right die changing driving mechanism 7 drives the machine head mechanism 5 to move upwards in the direction shown in the figure, so that the centers of the circular die bent pipes are kept consistent during the pipe bending.
S300, if the pipe bending is finished, loosening the pipe fitting 9, and taking down the pipe fitting 9 to finish machining; as shown in fig. 11, if the pipe bending is required to be continued, according to the pipe bending direction, left bending is required in the drawing, the circular die 51 on the corresponding side of each group of circular dies 51 is selected to be opened, the circular die 51 on the lower side in the drawing is opened, the other side is in a clamping state, the circular die 51 on the upper side in the drawing is in a clamping state, and the feeding mechanism 3 moves to feed materials in the direction of the head mechanism 5;
s400, as shown in FIGS. 12-14, repeating S100-S300 until all the pipe bending at one end of the pipe fitting 9 is completed;
s500, as shown in figure 15, the machine head mechanism 5 rotates to an initial position and clamps the pipe fitting 9 through the circular die 51 on the other clamping side, the feeding clamping mechanism 2 and the die guiding mechanism 4 simultaneously loosen the pipe fitting 9, and the feeding clamping mechanism 2 returns to the initial position;
s600, as shown in FIG. 16, the machine head mechanism 5 rotates 180 degrees to turn the pipe fitting 9, and synchronously adjusts the direction of the pipe fitting 9, so that the pipe fitting can be clamped by the feeding and clamping mechanism 2;
s700, as shown in fig. 17, the feeding clamping mechanism 2 moves to a set position to clamp the pipe 9, and after the pipe 9 is clamped, each group of circular molds 51 is decompressed and the feeding clamping mechanism 2 moves back;
s800, after the bent pipe of the pipe fitting 9 passes through the die guide mechanism 4, clamping the pipe fitting by the die guide mechanism 4;
and S900, as shown in FIG. 18, repeating S100-S300 until all the pipe fittings 9 are bent, loosening the pipe fittings 9, and taking down the pipe fittings 9 to finish the processing.
The above-mentioned setting positions are set according to the actual size of the pipe 9.
The present invention is not described in detail in the prior art, and therefore, the present invention is not described in detail.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
Although the terms of the frame 1, the feeding and clamping mechanism 2, the feeding mechanism 3, the die guide mechanism 4, the head mechanism 5, the rotary driving mechanism 6, the left-right die change driving mechanism 7, the up-down die change driving mechanism 8, the pipe 9, the headstock 21, the main spindle 22, the second driver 23, the clamping portion 24, the third driver 25, the bevel gear 26, the gear 27, the guide die 41, the fourth driver 42, the first link structure 43, the circular die 51, the first driver 52, the rotary shaft 53, the second link structure 54, the die holder 55, the guide groove 551, the guide block, the head 541 box 56, the sixth driver 71, the second transmission structure 72, the fifth driver 81, the first transmission structure 82, and the like are used more frequently herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to the spirit of the present invention.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present application, fall within the protection scope of the present invention.
Claims (10)
1. The left and right co-bending pipe bending machine with the automatic end falling function is characterized by comprising a rack, a feeding clamping mechanism, a feeding mechanism, a die guiding mechanism, a machine head mechanism, a rotary driving mechanism, an upper die changing driving mechanism, a lower die changing driving mechanism and a left and right die changing driving mechanism, wherein the feeding clamping mechanism, the feeding mechanism, the die guiding mechanism, the machine head mechanism, the rotary driving mechanism, the upper die changing driving mechanism, the lower die changing driving mechanism and the left and right die changing driving mechanism are arranged on the rack;
the feeding clamping mechanism is connected with the feeding mechanism and can clamp a pipe fitting and drive the pipe fitting to rotate so as to change the space angle of the pipe fitting;
the feeding mechanism is used for driving the feeding clamping mechanism to move back and forth along the length direction of the rack so as to realize the feeding operation of the pipe fitting;
the die guide mechanism is arranged between the feeding clamping mechanism and the machine head mechanism, can clamp and release the pipe fitting so as to limit the freedom degree of the pipe fitting in the width direction and the height direction of the rack, and when the die guide mechanism releases the pipe fitting, the height of the top of the die guide mechanism is lower than that of the bottom of the pipe fitting;
the machine head mechanism is arranged at one end of the rack and at least provided with two symmetrically arranged circular dies, the circular dies are driven to switch a loosening or clamping state by driving the plurality of first drivers, and when the circular dies are in the loosening state, the top height of the circular dies is lower than the bottom height of the pipe fitting;
the left and right die changing driving mechanism is connected with the machine head mechanism and is used for driving the machine head mechanism to move back and forth along the width direction of the rack;
the upper and lower die changing driving mechanism is connected with the machine head mechanism and is used for driving the machine head mechanism to lift along the height direction of the rack;
the rotary driving mechanism is in driving connection with the machine head mechanism and can drive the machine head mechanism to rotate, and can be matched with the machine head mechanism, the left die changing driving mechanism, the right die changing driving mechanism and the upper die changing driving mechanism and the lower die changing driving mechanism to realize the turning function of the pipe fitting and the function switching of the left bend and the right bend of the pipe fitting and realize the right bend and the right bend operation of the pipe fitting.
2. The machine for bending left and right pipes according to claim 1, wherein the feeding and clamping mechanism, the die guiding mechanism and the machine head mechanism are located on the same straight line.
3. The machine for bending left and right pipes according to claim 1 or 2, wherein the feeding clamping mechanism comprises a main spindle box, a main spindle mounted on the main spindle box, a second driver for driving the main spindle to rotate, a clamping portion provided at an end of the main spindle, and a third driver for driving the clamping portion to loosen and clamp.
4. A left-right pipe bender with automatic drop head function according to claim 3, wherein said headstock is slidably connected to said frame and drivingly connected to said feed mechanism/said headstock is connected to said feed mechanism, and said feed mechanism is drivingly connected to said frame.
5. The left and right co-bending pipe bending machine with the automatic head dropping function according to claim 1 or 2, wherein the guide die mechanism comprises at least one group of symmetrically arranged guide dies and a fourth driver for driving the two oppositely arranged guide dies to be separated and close, and the two guide dies are separated and close along the width direction of the rack.
6. The left and right co-bending pipe bending machine with the automatic end-dropping function according to claim 5, wherein the fourth driver drives each group of guide dies to be separated and close through the first connecting rod structure; when the fourth driver drives each group of guide dies to be separated through the first connecting rod structure, the height of each guide die is gradually reduced to avoid the pipe fitting; when the fourth driver drives each group of guide dies to close up through the first connecting rod structure, the height of the guide dies is gradually increased to be capable of clamping the pipe fitting.
7. The machine for bending left and right pipes according to claim 1 or 2, wherein the machine head mechanism comprises at least one set of symmetrically arranged circular dies, a rotating shaft in driving connection with the rotary driving mechanism, and second connecting rod structures corresponding to the circular dies one by one, one end of each second connecting rod structure is connected with one circular die, and the other end of each second connecting rod structure is connected with one first driver.
8. The machine tool of claim 7, wherein the machine head mechanism further comprises a die holder having a guiding groove corresponding to the second link structures, and each of the second link structures has a guiding block matching with the guiding groove, so that the alignment of the output direction of the first driver is realized by the matching of the guiding groove and the guiding block.
9. The left-right co-bending pipe bending machine with the automatic head dropping function according to claim 1 or 2, wherein the up-down die change driving mechanism comprises a fifth driver and a first transmission structure for connecting the fifth driver and the head mechanism, so that the head mechanism can be driven by the fifth driver to move up and down in the height direction of the frame; the left and right die changing driving mechanism comprises a sixth driver and a second transmission structure for connecting the sixth driver and the machine head mechanism, so that the machine head mechanism can be driven to move back and forth along the width direction of the machine frame through the sixth driver.
10. The method for processing the left and right co-bending pipe bending machine is characterized in that the left and right co-bending pipe bending machine with the automatic end falling function, which is disclosed by any one of claims 1 to 9, is used, and comprises the following processing steps:
s000, switching the height of a machine head mechanism according to the pipe diameter of the pipe to enable a groove on each circular die to correspond to the pipe to be processed, simultaneously clamping the pipe by the feeding clamping mechanism and the die guiding mechanism, enabling one circular die on one side of each group of circular dies on the machine head mechanism to be in a clamping state, enabling the other circular die on the other side of each group of circular dies on the machine head mechanism to be in an opening state, and drawing the pipe to a set position through a feeding mechanism;
s100, when the pipe fitting is located at a set position, the circular die on the other side is switched to a clamping state, and the pipe fitting is completely fixed at the moment;
s200, the machine head mechanism rotates towards a set direction, the feeding mechanism moves towards the machine head mechanism to feed, and the left and right die changing driving mechanisms drive the machine head mechanism to move towards the set direction, so that the first pipe bending is completed;
s300, if the pipe bending is finished, loosening the pipe fitting, and taking down the pipe fitting to finish machining; if the pipe bending is required to be continued, selecting one side of each group of circular dies corresponding to the pipe bending direction to open, enabling the other side of each group of circular dies to be in a clamping state, and enabling the feeding mechanism to move towards the machine head mechanism to feed materials;
s400, repeating the steps S100-S300 until all the pipe bending at one end of the pipe fitting is finished;
s500, the machine head mechanism rotates to an initial position and clamps the pipe fitting through clamping the round die on the other side, the pipe fitting is simultaneously loosened by the feeding clamping mechanism and the die guiding mechanism, and the feeding clamping mechanism returns to the initial position;
s600, rotating the machine head mechanism by 180 degrees to turn the pipe fitting, and synchronously adjusting the direction of the pipe fitting so as to enable the pipe fitting to be clamped by the feeding clamping mechanism;
s700, moving the feeding clamping mechanism to a set position to clamp the pipe fitting, and after the pipe fitting is clamped, releasing pressure of each group of round dies and moving the feeding clamping mechanism back;
s800, after the bent pipe of the pipe fitting passes through a die guide mechanism, clamping the pipe fitting by the die guide mechanism;
and S900, repeating the steps S100-S300 until all the pipe fittings are bent, loosening the pipe fittings, and taking down the pipe fittings to finish the processing.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115283502A (en) * | 2022-10-09 | 2022-11-04 | 苏迈特智能科技(江苏)有限公司 | Positioning device for elbow pipe machining |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107282720A (en) * | 2017-07-31 | 2017-10-24 | 浙江和良智能装备有限公司 | A kind of common curved CNC tube bending machine in left and right |
| CN206898120U (en) * | 2017-04-18 | 2018-01-19 | 安吉县聚源家具有限公司 | A kind of high-precision angle pipe equipment of chair tool |
| CN107876613A (en) * | 2017-11-06 | 2018-04-06 | 浙江长兴和良智能装备有限公司 | A kind of workpiece process for producing line and method for combining pipe end processing and bend pipe processing |
| CN209407149U (en) * | 2018-12-25 | 2019-09-20 | 张家港合泰机械科技有限公司 | A kind of left and right is altogether to omnipotent all-electric CNC tube bending machine |
| CN209531926U (en) * | 2018-12-25 | 2019-10-25 | 张家港合泰机械科技有限公司 | A kind of bending of fuel of internal combustion engine injection pipe and dial nut auxiliary device |
| CN209753726U (en) * | 2018-09-04 | 2019-12-10 | 浙江和良智能装备有限公司 | move material system, divide material system and make production line that D was taken over |
| CN211707805U (en) * | 2019-12-17 | 2020-10-20 | 广州捷晟自动化控制设备有限公司 | Left-right pipe bending device of pipe bending machine |
| CN215467287U (en) * | 2021-02-23 | 2022-01-11 | 上海瀚霜机电设备有限公司 | Pipe bending machine capable of realizing midway turning of bent pipe and working left and right |
-
2022
- 2022-02-09 CN CN202210120765.3A patent/CN114453462B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206898120U (en) * | 2017-04-18 | 2018-01-19 | 安吉县聚源家具有限公司 | A kind of high-precision angle pipe equipment of chair tool |
| CN107282720A (en) * | 2017-07-31 | 2017-10-24 | 浙江和良智能装备有限公司 | A kind of common curved CNC tube bending machine in left and right |
| CN107876613A (en) * | 2017-11-06 | 2018-04-06 | 浙江长兴和良智能装备有限公司 | A kind of workpiece process for producing line and method for combining pipe end processing and bend pipe processing |
| CN209753726U (en) * | 2018-09-04 | 2019-12-10 | 浙江和良智能装备有限公司 | move material system, divide material system and make production line that D was taken over |
| CN209407149U (en) * | 2018-12-25 | 2019-09-20 | 张家港合泰机械科技有限公司 | A kind of left and right is altogether to omnipotent all-electric CNC tube bending machine |
| CN209531926U (en) * | 2018-12-25 | 2019-10-25 | 张家港合泰机械科技有限公司 | A kind of bending of fuel of internal combustion engine injection pipe and dial nut auxiliary device |
| CN211707805U (en) * | 2019-12-17 | 2020-10-20 | 广州捷晟自动化控制设备有限公司 | Left-right pipe bending device of pipe bending machine |
| CN215467287U (en) * | 2021-02-23 | 2022-01-11 | 上海瀚霜机电设备有限公司 | Pipe bending machine capable of realizing midway turning of bent pipe and working left and right |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115283502A (en) * | 2022-10-09 | 2022-11-04 | 苏迈特智能科技(江苏)有限公司 | Positioning device for elbow pipe machining |
| CN115283502B (en) * | 2022-10-09 | 2022-12-30 | 苏迈特智能科技(江苏)有限公司 | Positioning device for elbow processing |
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| CN114453462B (en) | 2023-04-28 |
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