阅读说明：本技术 波纹管焊接装置以及焊接方法 (Corrugated pipe welding device and welding method ) 是由 丁艳钊 于 2019-09-26 设计创作，主要内容包括：本发明公开了一种波纹管焊接装置以及焊接方法,该装置包括机头、治具以及焊接机构,所述机头包括用于固定被焊接的法兰的卡盘,所述治具包括用于穿置被焊接的波纹管的筒体,以及能够固定于所述筒体的一端开口处的第一卡板和第二卡板,所述第一卡板和所述第二卡板能够拼接成一环状能将穿设于所述筒体内的波纹管固定的卡环,从而在所述治具被固定至使波纹管的端部与被所述卡盘固定的法兰相抵接时,所述波纹管能随所述法兰同步转动；本发明提供的波纹管焊接装置及焊接方法能将波纹管位于治具至机头之间的部分保持高度的同轴状态,在焊接时,即便波纹管背离治具的余下部分发生甩动也不会影响将波动传导至焊接端,从而保证波纹管与法兰的焊接质量。(The invention discloses a corrugated pipe welding device and a welding method, the device comprises a machine head, a jig and a welding mechanism, wherein the machine head comprises a chuck for fixing a welded flange, the jig comprises a barrel for penetrating the welded corrugated pipe, and a first clamping plate and a second clamping plate which can be fixed at an opening at one end of the barrel, the first clamping plate and the second clamping plate can be spliced into an annular clamping ring capable of fixing the corrugated pipe penetrating the barrel, so that when the jig is fixed to enable the end part of the corrugated pipe to be abutted against the flange fixed by the chuck, the corrugated pipe can synchronously rotate along with the flange; the corrugated pipe welding device and the corrugated pipe welding method can keep the part of the corrugated pipe between the jig and the machine head in a high coaxial state, and during welding, even if the corrugated pipe deviates from the rest part of the jig and swings, the transmission of the fluctuation to the welding end cannot be influenced, so that the welding quality of the corrugated pipe and the flange is ensured.)

1. The utility model provides a bellows welding set which characterized in that, includes aircraft nose, tool and welding mechanism, wherein:

the machine head comprises a chuck for fixing a welded flange and a driving unit in transmission connection with the chuck to drive the chuck to rotate around the axis of the chuck;

the jig comprises a cylinder body used for penetrating and placing welded corrugated pipes, the cylinder body and the chuck are coaxial and can rotate around the axis of the cylinder body, the jig also comprises a first clamping plate and a second clamping plate which can be fixed at an opening at one end of the cylinder body, the first clamping plate and the second clamping plate are respectively provided with a butt joint part suitable for being connected with each other so that the first clamping plate and the second clamping plate can be spliced into an annular clamping ring, the inner ring of the clamping ring is circular, the diameter of the inner ring of the clamping ring is larger than or equal to the outer diameter of a wave trough of the outer wall of the welded corrugated pipe and smaller than the outer diameter of a wave crest of the outer wall of the welded corrugated pipe, so that the corrugated pipe penetrating and arranged in the cylinder body can be fixed when the first clamping plate and the second clamping plate are spliced and fixed at the opening at one end of the cylinder body, and therefore when the jig is fixed to enable the end part of the corrugated pipe to be, the corrugated pipe can synchronously rotate along with the flange;

the welding mechanism is arranged between the machine head and the jig so as to weld the joint of the corrugated pipe and the flange.

2. The bellows welding device of claim 1, comprising a locking mechanism for securing the jig.

3. The bellows welding device according to claim 1, further comprising a table, wherein the head is fixed to one end of the table, and the jig is slidably connected to the table so as to be movable in an axial direction of the cylinder.

4. Bellows welding device according to claim 1, wherein the cylinder comprises a hollow shaft and a replacement sleeve inserted at openings at both ends of the hollow shaft, the replacement sleeve being detachably connected to the hollow shaft.

5. Bellows welding apparatus according to claim 4, wherein the first and second clips are secured to an outer end wall of either of the refill sleeves.

6. The bellows welding device according to claim 1, further comprising one or more brackets disposed on a side of the jig facing away from the head for erecting the welded bellows so that the welded bellows are kept coaxial as a whole.

7. Bellows welding device according to claim 6, wherein said support comprises a plurality of rollers, all of said rollers being distributed around a central point located on the axis of said cylinder.

8. Bellows welding apparatus according to claim 1, wherein the welding mechanism comprises a laser welder.

9. A method of welding a corrugated pipe to a flange, using a corrugated pipe welding apparatus as claimed in any one of claims 1 to 8, comprising the steps of:

fixing the flange on a chuck, and enabling the end face to be welded of the flange to be opposite to the chuck;

penetrating the corrugated pipe into a cylinder of the jig, and enabling one end of the corrugated pipe, which is opposite to the chuck, to penetrate out of the cylinder;

butting and splicing the first clamping plate and the second clamping plate into an annular clamping ring, inserting an inner ring of the clamping ring into a wave trough on the outer wall of the corrugated pipe, and fixing the first clamping plate and the second clamping plate with the cylinder;

adjusting the position of the corrugated pipe to enable one end to be welded of the corrugated pipe to be abutted against the end face to be welded of the flange, and fixing the jig;

starting a driving unit to drive the chuck to drive the flange to rotate, and simultaneously, under the action of friction force, the corrugated pipe synchronously rotates along with the flange;

and starting a welding mechanism to weld the flange and the corrugated pipe into a whole.

10. The method for welding the corrugated pipe as claimed in claim 9, wherein the step of "adjusting the position of the corrugated pipe so that the end to be welded abuts against the end surface to be welded of the flange", and fixing the jig "and the step of" starting the driving unit so that the chuck drives the flange to rotate, and simultaneously, under the action of friction force, the end of the corrugated pipe to be welded, which is far away from the machine head, is erected on a support so that the corrugated pipe is coaxial as a whole.

Technical Field

The invention relates to the technical field of welding, in particular to a corrugated pipe welding device and a welding method.

Background

The corrugated pipe is a pipe with a regular wave shape, and the common corrugated pipe is made of carbon steel, stainless steel, steel lining plastic or aluminum and the like. The corrugated pipe is mainly used for occasions such as irregular turning, expansion and contraction which are not convenient for pipeline installation by using a fixed elbow, and is suitable for connecting pipelines or pipelines and equipment.

The corrugated pipe is required to be welded with flanges at two ends before use, and the wall of the corrugated pipe is thin, so that the conventional welding mode of the corrugated pipe and the flanges is laser welding. However, due to the structural characteristics of the corrugated pipe, the corrugated pipe is easy to twist when rotating, and particularly, one end of the corrugated pipe, which is far away from the welding position, can swing to a larger extent, so that an operator can hardly keep the whole corrugated pipe in a whole coaxial state, and the welding quality of the corrugated pipe and the flange is affected.

In order to solve the problems, one solution is to erect a tip support at one end of the corrugated pipe far away from the welding position so as to enable the corrugated pipe to be coaxial as much as possible, but the tip support cannot fix the corrugated pipe in the circumferential direction and is only suitable for welding the corrugated pipe with a short length, when the welding of the corrugated pipe with a long length is processed, the problem that the tail end of the corrugated pipe is thrown during welding cannot be avoided, and the tip support occupies a workshop space and is inconvenient to retract and release.

Disclosure of Invention

In order to overcome the defects in the prior art, the embodiment of the invention provides a corrugated pipe welding device and a welding method, which can solve the problem that the welding quality of a corrugated pipe and a flange is affected because the corrugated pipe is easy to swing when being welded with the flange.

The embodiment of the application discloses: the utility model provides a bellows welding set, its includes aircraft nose, tool and welding mechanism, wherein:

the machine head comprises a chuck for fixing a welded flange and a driving unit in transmission connection with the chuck to drive the chuck to rotate around the axis of the chuck;

the jig comprises a cylinder body used for penetrating and placing welded corrugated pipes, the cylinder body and the chuck are coaxial and can rotate around the axis of the cylinder body, the jig also comprises a first clamping plate and a second clamping plate which can be fixed at an opening at one end of the cylinder body, the first clamping plate and the second clamping plate are respectively provided with a butt joint part suitable for being connected with each other so that the first clamping plate and the second clamping plate can be spliced into an annular clamping ring, the inner ring of the clamping ring is circular, the diameter of the inner ring of the clamping ring is larger than or equal to the outer diameter of a wave trough of the outer wall of the welded corrugated pipe and smaller than the outer diameter of a wave crest of the outer wall of the welded corrugated pipe, so that the corrugated pipe penetrating and arranged in the cylinder body can be fixed when the first clamping plate and the second clamping plate are spliced and fixed at the opening at one end of the cylinder body, and therefore when the jig is fixed to enable the end part of the corrugated pipe to be, the corrugated pipe can synchronously rotate along with the flange;

the welding mechanism is arranged between the machine head and the jig so as to weld the joint of the corrugated pipe and the flange.

Preferably, the bellows welding device includes a locking mechanism for fixing the jig.

Preferably, the bellows welding set still includes the board, the aircraft nose is fixed in the one end of board, tool sliding connection in on the board with can follow the axis direction removal of barrel.

Preferably, the cylinder comprises a hollow shaft and a replacement sleeve inserted into openings at two ends of the hollow shaft, and the replacement sleeve is detachably connected with the hollow shaft.

Preferably, the first catch plate and the second catch plate are fixed to an outer end wall of any one of the refill sleeves.

Preferably, the bellows welding device further comprises one or more brackets which are arranged on one side of the jig, which is away from the machine head, and used for erecting the welded bellows, so that the welded bellows integrally keeps coaxial.

Preferably, the support comprises a plurality of rollers, all of which are distributed about a central point located on the axis of the cylinder.

Preferably, the welding mechanism comprises a laser welder.

The embodiment of the application also discloses: a corrugated pipe welding method is used for welding and connecting a corrugated pipe and a flange, and is characterized in that the corrugated pipe welding device is adopted and comprises the following steps:

fixing the flange on a chuck, and enabling the end face to be welded of the flange to be opposite to the chuck;

penetrating the corrugated pipe into a cylinder of the jig, and enabling one end of the corrugated pipe, which is opposite to the chuck, to penetrate out of the cylinder;

butting and splicing the first clamping plate and the second clamping plate into an annular clamping ring, inserting an inner ring of the clamping ring into a wave trough on the outer wall of the corrugated pipe, and fixing the first clamping plate and the second clamping plate with the cylinder;

adjusting the position of the corrugated pipe to enable one end to be welded of the corrugated pipe to be abutted against the end face to be welded of the flange, and fixing the jig;

starting a driving unit to drive the chuck to drive the flange to rotate, and simultaneously, under the action of friction force, the corrugated pipe synchronously rotates along with the flange;

and starting a welding mechanism to weld the flange and the corrugated pipe into a whole.

Preferably, the step of adjusting the position of the corrugated pipe to enable the end to be welded of the corrugated pipe to be abutted against the end face to be welded of the flange, and the step of fixing the jig and the step of starting the driving unit to enable the driving unit to drive the chuck to drive the flange to rotate, and simultaneously under the action of friction force, the step of synchronously rotating the corrugated pipe along with the flange further comprises the step of erecting one end, far away from the machine head, of the corrugated pipe to be welded on a support so as to enable the corrugated pipe to be coaxial integrally.

The invention has the following beneficial effects:

the corrugated pipe welding device and the corrugated pipe welding method can keep the part of the corrugated pipe between the jig and the machine head in a high coaxial state, and during welding, even if the corrugated pipe deviates from the rest part of the jig and swings, the transmission of the fluctuation to the welding end cannot be influenced, so that the welding quality of the corrugated pipe and the flange is ensured.

In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a bellows welding apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of a jig according to an embodiment of the present invention;

FIG. 3 is an exploded view of a jig according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a snap ring in an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a first card and a second card according to an embodiment of the invention.

Reference numerals of the above figures:

100. a flange; 200. a bellows;

1. a machine head; 11. a chuck;

2. a jig; 21. a barrel; 211. a crankshaft; 212. a nut; 213. replacing the sleeve; 22. a first clamping plate; 23. a second clamping plate; 231. a flange; 24. a base; 241. a slide plate; 25. a bearing; 26. a cover plate;

3. provided is a machine platform.

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, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

This implementation provides a bellows welding set for solve the bellows and easily take place the whipping when welding with the flange, influence the welding quality's of bellows and flange problem. Referring to fig. 1, the bellows welding apparatus includes a head 1, a jig 2, and a welding mechanism (not shown). Wherein the head 1 comprises a chuck 11 for fixing the welded flange 100 and a driving unit (not shown in the figures) drivingly connected to the chuck 11 for driving the chuck 11 to rotate about its axis. Referring to fig. 2, the jig 2 includes a cylinder 21 for passing the welded corrugated tube 200 therethrough, the cylinder 21 and the chuck 11 are coaxial and can rotate around their axes, the jig 2 further includes a first clamping plate 22 and a second clamping plate 23 which can be fixed at an opening at one end of the cylinder 21, the first clamping plate 22 and the second clamping plate 23 respectively have abutting portions suitable for being connected with each other, so that the first clamping plate 22 and the second clamping plate 23 can be spliced into an annular clamping ring, an inner ring of the clamping ring is circular, the diameter of the inner ring is greater than or equal to the outer diameter of a wave trough of an outer wall of the welded corrugated tube 200 and smaller than the outer diameter of a wave crest of the outer wall of the welded corrugated tube 200, so that the corrugated tube 200 passing through the cylinder 21 can be fixed when the first clamping plate 22 and the second clamping plate 23 are spliced and fixed at the opening at one end of the cylinder 21, so that when the jig 2 is fixed to enable an end of the corrugated tube 200 to abut against the flange 100 fixed, the bellows 200 can rotate synchronously with the flange 100. The welding mechanism is disposed between the head 1 and the jig 2 so as to weld the joint between the bellows 200 and the flange 100.

By means of the structure, the corrugated pipe welding device can keep the part, located between the jig 2 and the machine head 1, of the corrugated pipe 200 in a high coaxial state, so that even if the corrugated pipe 200 deviates from the rest part of the jig 2 during welding, swinging does not affect transmission of fluctuation to a welding end, and welding quality of the corrugated pipe 200 and the flange 100 is guaranteed. Specifically, a snap ring formed by splicing the first snap plate 22 and the second snap plate 23 of the jig 2 is fixed at a wave trough of the corrugated pipe 200, so that the corrugated pipe 200 cannot axially move; meanwhile, due to the limitation of the structural relationship between the diameter of the inner ring of the snap ring and the sizes of the wave crest and the wave trough of the corrugated pipe 200, the corrugated pipe 200 fixed by the snap ring cannot swing. It should be noted that, as shown in fig. 4 and 5, the portion of the snap ring fixed to the wave trough of the corrugated pipe 200 may be only the flanges 231 extending inward from the first and second seizing plates 22 and 23, and the two flanges 231 are split to form an inner ring capable of being embedded in the wave trough of the corrugated pipe 200. In addition, since the welding end of the bellows 200 abuts against the flange 100 during welding, it can be understood that the flange 100 and the snap ring cooperate to clamp and contract the portion of the bellows 200 located between the jig 2 and the handpiece 1, so that the portion of the bellows 200 can be regarded as a rigid tube body to a certain extent, and the portion of the bellows 200 is prevented from shaking.

The bellows welding device may be configured as a stand-alone work apparatus or may be combined with conventional machining equipment. Taking the bellows welding apparatus as an example of being disposed on a machine tool, the machine head 1 can directly take the machine head 1 with the chuck 11 attached thereto, and the drive motor of the machine head 1 can be used as a drive unit for driving the chuck 11. The jig 2 can be disposed on a slide rail of a machine table 3 of a machine tool, so that the jig 2 can be slidably connected to the machine table 3 to move along the axial direction of the cylinder 21, thereby adjusting the distance between the jig 2 and a machine head 1 fixed to one end of the machine table 3, and maintaining the cylinder 21 and the chuck 11 to be coaxial. In addition, the corrugated pipe welding device can further comprise a locking mechanism for fixing the jig 2, so that after the position of the jig 2 is adjusted, the jig 2 can be prevented from moving axially in machining, and the corrugated pipe 200 which rotates synchronously under the action of friction force with the flange 100 can be prevented from slipping off the flange 100.

Referring to fig. 2 in conjunction with fig. 3, in an alternative embodiment, the jig 2 may be formed by a plurality of members that are fixedly connected to facilitate assembly and maintenance. For example, the fixture 2 may include a base 24, the base 24 is provided with a through hole, and two end faces of the base 24 are respectively provided with a stepped hole for installing the bearing 25, and the stepped hole is coaxial with the through hole. The two bearings 25 are fixed in the stepped holes by cover plates 26 fixedly attached to both end faces of the base 24, respectively, after being fitted into the stepped holes. Two hollow and screw-fitting shafts 211 and nuts 212 are inserted into the cover plate 26 and the through-holes in sequence from the two end faces of the base 24, respectively, and are screwed together to form a hollow shaft, which is rotatably and fixedly connected to the base 24 through bearings 25 respectively disposed in the two stepped holes. In addition, a replacement sleeve 213 may be inserted into each of the openings at both ends of the hollow shaft, that is, the replacement sleeve 213 and the hollow shaft, both of which are partially inserted into the hollow shaft, may be regarded as the above-mentioned cylinder 21 so as to be integrally rotatable on the base 24, and it is understood that the hollow shaft is coaxial with the chuck 11. The replacement sleeve 213 is partially inserted into the hollow shaft so that the bellows 200 is in contact with the replacement sleeve 213 without being in direct contact with the hollow shaft, and the replacement sleeve 213 detachably attached to the hollow shaft serves as a wearing part to prevent the hollow shaft, which serves as a centering structure for ensuring the coaxial alignment of the cylinder 21 and the chuck 11 after a long period of use, from being worn, while the replacement sleeves 213 provided at both sections of the hollow shaft may be provided in a structure that is relatively small and compact and is easy to replace. The convenience can change conveniently after taking place wearing and tearing. First catch 22 and second catch 23 are secured to the outer end walls of either replacement sleeve 213. The bottom of the base 24 may be provided with a slide plate 241 adapted to the slide rail of the machine tool and the machine table 3, so that the jig 2 is slidably connected to the machine table 3.

In an alternative embodiment, for some corrugated pipes 200 with too long dimensions, although the whipping of the end of the corrugated pipe 200 does not affect the welding of the front section of the fixed corrugated pipe 2, the whipping of the corrugated pipe 200 is prevented from damaging the corrugated pipe 200 or surrounding equipment. One or more brackets for mounting the welded corrugated pipe 200 may be provided on the side of the jig 2 facing away from the head 1, so that the welded corrugated pipe 200 is kept coaxial as a whole. A particular bracket may include a plurality of rollers, all of which are distributed about a central point located on the axis of the barrel 21.

The embodiment also discloses a welding method for welding the corrugated pipe 200 and the flange 100 by adopting the corrugated pipe welding device, which specifically comprises the following steps:

first, the flange 100 is fixed to the chuck 11 with its end surface to be welded facing away from the chuck 11. It will be appreciated that the flange 100 fixed to the chuck 11 is coaxial with the chuck 11.

Then, the bellows 200 is inserted into the cylinder 21 of the jig 2, and its end opposite to the chuck 11 is passed out of the cylinder 21. If the replacement shaft is provided at both ends of the cylinder 21, the bellows 200 should penetrate the replacement shaft.

Subsequently, the first clamping plate 22 and the second clamping plate 23 are butted and spliced to form an annular clamping ring, an inner ring of the clamping ring is inserted into a wave trough on the outer wall of the corrugated pipe 200, and the first clamping plate 22 and the second clamping plate 23 are fixed with the cylinder 21. At this time, the bellows 200 is fixed to the jig 2 and cannot move in the axial direction.

Next, the position of the bellows 200 is adjusted so that the end to be welded abuts the end face of the flange 100 to be welded, and the jig 2 is fixed. It will be appreciated that the abutment is such that the flange 100 and the bellows 200 do not slip off after the jig 2 is fixed in position. For example, for some bellows 200 that can be contracted, the abutment shall mean that the flange 100 and the snap ring work together to pinch and contract the portion of the bellows 200 between the jig 2 and the handpiece 1, so that the portion of the bellows 200 can be regarded as a rigid tube body to some extent.

And starting the driving unit to drive the chuck 11 to drive the flange 100 to rotate, and simultaneously, under the action of friction force, the corrugated pipe 200 synchronously rotates along with the flange 100.

Finally, the welding mechanism is activated, either simultaneously with or after the activation of the drive unit, to weld the flange 100 and the bellows 200 together. The welding mechanism may include a laser welder or the like.

In a preferred embodiment, the step of "adjusting the position of the corrugated tube 200 to make the end to be welded abut against the end surface to be welded of the flange 100," and fixing the jig 2 "and the step of" starting the driving unit to drive the chuck 11 to drive the flange 100 to rotate, and simultaneously, under the action of friction force, synchronously rotating the corrugated tube 200 along with the flange 100 "further includes erecting the end of the corrugated tube 200 to be welded away from the machine head 1 on a bracket so as to keep the corrugated tube 200 coaxial as a whole.

The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.