CN216882368U

CN216882368U - Adjusting and limiting structure of bent pipe spot welding jig

Info

Publication number: CN216882368U
Application number: CN202122955711.2U
Authority: CN
Inventors: 方旅大; 唐战; 曾祖铭; 贺勇
Original assignee: Shenzhen Catic Tai Kee Co ltd
Current assignee: Shenzhen Catic Tai Kee Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-07-05
Anticipated expiration: 2031-11-29

Abstract

The utility model provides an adjusting and limiting structure of a bent pipe spot welding jig, which comprises: a base; a girth welding jig assembly comprising: a cartridge, comprising: a support table, a third movable vertical plate and a backup plate; the positioning support plate is arranged on at least one positioning inserted rod of the positioning support plate; the vertical adjusting structure is used for adjusting the mounting height of the positioning supporting plate on the third movable vertical plate; a backup plate; a first clamping device at one side of the cartridge, comprising: the first clamping support and the first chuck are conical steps with gradually reduced outer diameters, and the outer diameters of the polar steps are respectively matched with the segmented bent pipes with different inner diameters; and a driving device for driving the first clamping bracket. According to the utility model, through the matching of the vertical adjusting structure, the horizontal linear adjusting structure and the tapered stepped chuck, the clamping, adjusting and limiting of the spot welding jig suitable for processing the annular welding seams of the sectional bent pipes of the circular air ports with different calibers are realized, so that the universality and the welding efficiency of the bent pipe spot welding jig are greatly improved, and the production cost is further reduced.

Description

Adjusting and limiting structure of bent pipe spot welding jig

Technical Field

The utility model belongs to the technical field of welding, and particularly relates to an adjusting and limiting structure of a bent pipe spot welding jig which is particularly suitable for welding a bent pipe at an air port.

Background

At present, for the air port bent pipe, a plurality of segmented arc-shaped pipe bodies are generally welded and processed to form a continuous bent pipe whole, each segmented bent pipe is firstly subjected to automatic or manual spot welding splicing and shaping (namely straight seam welding) through jig clamping, then the whole bent pipe is hoisted to a spot welding jig or a fixture of an automatic welding machine for fixing, and circular-arc welding seams between the segmented arc-shaped pipe bodies are continuously and automatically welded (namely girth welding) through a worker holding a welding gun on the spot welding jig or utilizing the welding gun of the automatic welding machine.

Because the cost problem needs to be considered when the automatic welding machine is used on a large scale, the spot welding jig with a relatively simple structure and low cost is the first choice for small and medium-sized enterprises. The fixture for the air port bent pipe provided in the market at present lacks the clamping limiting performance on the segmented bent pipe, so that the rapid adjustment of the spot welding fixture for the air port bent pipe with the included angle of the respective axial leads of the segmented bent pipes at two ends of 90 degrees aiming at any one aperture gradient (such as series air port bent pipe products with aperture gradient ranges of 100mm, 125mm, 150mm, 200mm and 300 mm) in the aperture range of 300 millimeters cannot be realized, and the universality and the welding efficiency of the bent pipe spot welding fixture are reduced, and the production cost is improved.

Therefore, the existing spot welding jig for processing the arc-shaped welding line of the circular air port bent pipe lacks the clamping and adjusting limiting performance on the segmented bent pipes with different calibers, so that the universality and the welding efficiency of the bent pipe spot welding jig are reduced, and the production cost is improved, which is a technical problem to be solved in the field.

SUMMERY OF THE UTILITY MODEL

The utility model provides an adjusting and limiting structure of a bent pipe spot welding jig, which is particularly suitable for welding a bent pipe at an air port, and aims to solve the technical problems that the universality and the welding efficiency of the bent pipe spot welding jig are reduced and the production cost is improved because the conventional spot welding jig for processing arc-shaped welding seams of bent pipes at circular air ports lacks the clamping, adjusting and limiting performance of the segmented bent pipes with different calibers.

In order to solve the problems, the utility model adopts the technical scheme that: the utility model provides an elbow spot welding tool's regulation limit structure, includes:

a base;

the circular seam welding fixture assembly is used for welding circular seams among the segmented bent pipes, and each segmented bent pipe comprises a first bent pipe and a second bent pipe which are matched in inner diameter; the girth welding jig assembly includes:

locate cassette on the base, include: the supporting platform, a third movable vertical plate arranged on the supporting platform and a backup plate arranged on the third movable vertical plate;

the lower part of the third movable vertical plate is provided with a positioning supporting plate and at least one positioning inserted rod arranged at the top end of the positioning supporting plate; the vertical adjusting structure is used for adjusting the mounting height of the positioning supporting plate on the third movable vertical plate; the upper part of the third movable vertical plate is provided with a backup plate;

locate the first clamping device on the base in one side of cassette, first clamping device includes: the first clamping support is a first chuck arranged on the first clamping support, the first chuck is in a conical step shape with gradually reduced outer diameter, and the outer diameter of each step of the first chuck is correspondingly matched with the inner diameter of the segmented bent pipe with different inner diameters; the first driving device drives the first clamping support to be close to or far away from the clamping seat along the axial direction of the first chuck;

the second pressing devices are arranged on the first clamping support and uniformly surround the first chuck; the third driving device is used for driving the third movable vertical plate to linearly move along the direction close to or far away from the first clamping device;

placing a second bent pipe on the positioning support plate, wherein one end of the second bent pipe is abutted against one side of the positioning inserted bar, and the outer side face of the second bent pipe is abutted against the backup plate; one end of the first bent pipe is sleeved on the first chuck, and one end of the first bent pipe is pressed on the outer side of the first chuck through the plurality of second pressing devices;

the first driving device drives the first clamping support to move close to the clamping seat in a linear mode along the axial direction of the first chuck, the position, relative to the base, of the second bent pipe in the vertical direction and the horizontal direction is adjusted through the vertical adjusting structure and the third driving device respectively at the same time until the other end of the first bent pipe is in matched butt joint with the other end of the second bent pipe, a first circular seam formed between the first bent pipe and the second bent pipe is welded through a welding machine, and the first bent pipe and the second bent pipe are connected into a first connecting piece through the first circular seam.

Further, the vertical adjustment structure includes:

positioning holes are formed in the third movable vertical plate at intervals in the vertical direction, and one end of each positioning supporting plate is provided with a positioning bulge matched with any one positioning hole;

the top of the positioning supporting plate is provided with at least one cushion block.

Further, the third driving device includes:

the supporting platform is arranged on the top of the supporting plate;

a pair of third guide rails installed on the top of the support platform at intervals; a pair of third sliding blocks which are correspondingly matched with the pair of third guide rails are respectively arranged on two sides of the third movable vertical plate;

a third mounting side plate provided on the support table between the pair of third guide rails, a third driving member mounted on the third mounting side plate, and a third linear driving mechanism connected to the third driving member and parallel to the third guide rails;

the third movable vertical plate is arranged on the third moving part;

the third installation curb plate side is equipped with the scale that extends along the direction that is on a parallel with the third guide rail, and the third activity riser is equipped with the scale mark towards the side with the scale, and the position of relative base in the horizontal direction of location layer board and cushion is adjusted to cooperation third drive arrangement through scale mark and scale to the segmentation return bend of different internal diameters.

Furthermore, the bent pipe also comprises a third bent pipe and a fourth bent pipe, and the inner diameters of the first bent pipe, the second bent pipe, the third bent pipe and the fourth bent pipe are matched;

the girth welding jig assembly further includes:

install in the opposite side of cassette and locate the second clamping device on the base, second clamping device includes:

the second clamping support is a second chuck arranged on the second clamping support, the second chuck is in a conical step shape with the gradually reduced outer diameter, and the outer diameter of each step of the second chuck is correspondingly matched with the inner diameters of the segmented bent pipes with different inner diameters;

the second driving device drives the second clamping support to be close to or far away from the clamping seat along the axial direction of the second chuck, and the axial direction of the second chuck is vertical to the axial direction of the first chuck;

the backup plate includes:

the first backup plate extends from the third movable vertical plate to one side of the positioning insertion rod close to the first clamping device, the second backup plate extends from the third movable vertical plate to the other side of the positioning insertion rod close to the second clamping device, and the first backup plate and the second backup plate are both arranged along the direction vertical to the base; when the first circular seam is welded, the outer side surface of the second bent pipe is abutted against the first backup plate;

after the first girth welding is finished, the first driving device drives the first clamping support to move linearly away from the clamping seat, the plurality of pressing devices loosen the first bent pipe from the outer side of the first chuck, the first connecting piece is placed on the cushion block after being detached from the girth welding clamp assembly, one end of the second bent pipe abuts against the other side of the positioning insertion rod, and the outer side face of the second bent pipe abuts against the second backup plate; the second driving device drives the second clamping support to move linearly close to the clamping seat, and the third driving device drives the clamping seat to move linearly until one end of the first bent pipe is sleeved on the second chuck;

placing a fourth bent pipe on the cushion block, wherein one end of the fourth bent pipe is abutted against one side of the positioning inserted bar, and the outer side face of the fourth bent pipe is abutted against the first backup plate; one end of a third bent pipe is tightly pressed on a first chuck, a first driving device drives a first clamping support to move linearly close to a clamping seat, a third driving device drives the clamping seat to move linearly until the other end of the third bent pipe is matched and butted with the other end of a fourth bent pipe, a welding machine is used for welding a second annular seam formed between the third bent pipe and the fourth bent pipe, and the third bent pipe and the fourth bent pipe are connected into a second connecting piece through the second annular seam;

the first driving device and the second driving device respectively drive the first clamping support and the second clamping support to correspondingly move away from the clamping seat in a linear mode, the positioning inserted rod is detached from the cushion block, the first driving device and the second driving device respectively drive the first clamping support and the second clamping support to correspondingly move close to the clamping seat in a linear mode until one end of the second bent pipe is in matched butt joint with one end of the fourth bent pipe, the third driving device drives the clamping seat to move away from the first clamping device and the second clamping device in a linear mode until a third circular seam formed between the second bent pipe and the fourth bent pipe is connected in a suspension mode and welded through a welding machine, and the first connecting piece and the second connecting piece are connected into a bent pipe whole through the third circular seam.

Preferably, the first clamping bracket comprises:

the clamping seat is arranged on the base, and the clamping seat is arranged on the clamping seat;

the second clamping bracket includes:

the interval sets up a pair of second activity riser on the base, and the second chuck is installed in the one end that a pair of second activity riser is close to the cassette.

Further, the first driving device includes:

the two groups of first guide rails are arranged on the base at intervals, and each group of first guide rails comprises a pair of first guide rails arranged on the base at intervals;

a pair of first sliding blocks which are correspondingly matched with a pair of first guide rails of one group of first guide rails are respectively arranged on two sides of each first movable vertical plate, and the pair of first movable vertical plates are respectively and correspondingly arranged on the two groups of first guide rails in a sliding manner through the first sliding blocks;

the first supporting vertical plates are arranged on the base at intervals between the two groups of first guide rails, the first supporting rods are connected between the pair of second supporting vertical plates, the first mounting side plate is connected between the pair of second supporting vertical plates, and the first movable side plate and the second supporting rods are connected between the pair of first movable vertical plates; the first chuck is arranged on the pair of second supporting vertical plates through the second abdicating openings;

the first driving part is arranged on the first mounting side plate and used for driving the first moving part to reciprocate along a first linear driving mechanism which is connected with the first driving part and is parallel to the first guide rail;

the first movable side plate is arranged on the first moving part;

the second driving device includes:

the two groups of second guide rails are arranged on the base at intervals, and each group of second guide rails comprises a pair of second guide rails arranged on the base at intervals;

a pair of second sliding blocks which are correspondingly matched with a pair of second guide rails of one group of second guide rails are respectively arranged on two sides of each second movable vertical plate, and the pair of second movable vertical plates are respectively and correspondingly arranged on the two groups of second guide rails in a sliding manner through the second sliding blocks;

a second mounting side plate arranged on the base between the two groups of second guide rails and a second movable side plate connected between the pair of second movable vertical plates;

the second driving piece is arranged on the second mounting side plate and used for driving the second moving piece to reciprocate along a second linear driving mechanism which is connected with the second driving piece and is parallel to the second guide rail;

the second movable side plate is arranged on the second moving part;

preferably, the first driving part, the second driving part and the third driving part all adopt manual adjusting turntables, and the first linear driving mechanism, the second linear driving mechanism and the third linear driving mechanism all adopt lead screw nut driving mechanisms.

Preferably, the first guide rail is parallel to the second guide rail, the third guide rail is positioned between the first guide rail and the second guide rail, and the included angles between the third guide rail and the first guide rail and between the third guide rail and the second guide rail are equal in size;

the distance between two sides of the support platform of the positioning inserted rod is larger than one half of the maximum length of the segmented elbow in the axial direction.

Preferably, the installation cylinder, the first chuck and the second chuck are respectively provided with a plurality of yielding grooves extending along the radial direction at the outer side surfaces of the installation cylinder, the first chuck and the second chuck at intervals, the four quadrant points of the outer circumferences of the installation cylinder, the first chuck and the second chuck are respectively provided with a yielding groove, and the depth of the yielding groove is larger than 3 mm.

Further, still include:

a straight seam welding jig comprising:

the fixed bracket is arranged on the base; the fixed bolster includes:

the device comprises a pair of first supporting vertical plates arranged on a base at intervals, a transverse plate and a third supporting rod connected between the pair of first supporting vertical plates, wherein a plurality of mounting holes which are correspondingly matched with segmented bent pipes with different calibers are arranged on the transverse plate at intervals;

the first mounting disc is arranged at one end of each of the first supporting vertical plates and is perpendicular to the base, and a first yielding position opening is formed in the middle of the first mounting disc;

the shape and the outer diameter of the mounting cylinder are correspondingly matched with the shape and the inner diameter of the segmented bent pipe respectively;

the mounting cylinder is mounted on the corresponding mounting hole of the first supporting vertical plate or the transverse plate through the first abdicating hole;

install a plurality of first closing device on the fixed bolster, a plurality of first closing device evenly encircle the setting of installation section of thick bamboo for the segmentation return bend that the cover was located on the installation section of thick bamboo compresses tightly in the outside of installation section of thick bamboo, and weld the transversal joint of return bend through the welding machine.

Compared with the prior art, the elbow spot welding jig provided by the utility model has the following beneficial effects:

according to the elbow spot welding jig, the vertical adjusting structure, the horizontal linear adjusting structure and the conical stepped chuck are matched, so that the spot welding jig suitable for processing the arc-shaped welding line of the circular air port elbow can be used for clamping, adjusting and limiting the sectional elbows with different calibers, the universality and the welding efficiency of the elbow spot welding jig are greatly improved, and the production cost is further reduced.

Drawings

Fig. 1 is a first schematic view of an overall assembly structure of an undamped tuyere bent pipe state of an embodiment of a bent pipe spot welding jig provided by the utility model;

fig. 2 is a schematic structural diagram of a first clamping device clamping a tuyere bent pipe (with a caliber of 300 mm) according to an embodiment of the bent pipe spot welding jig provided by the utility model;

fig. 3 is a schematic structural diagram of a second clamping device clamping a tuyere bent pipe (with a caliber of 300 mm) according to an embodiment of the bent pipe spot welding jig provided by the utility model;

fig. 4 is a schematic structural diagram of a state in which the first clamping device and the second clamping device of the elbow spot welding jig provided by the utility model both clamp the tuyere elbow (the caliber is 300 mm);

fig. 5 is a schematic structural diagram of a straight welding jig clamping tuyere bent pipe (with a caliber of 300 mm) according to an embodiment of the bent pipe spot welding jig provided by the utility model;

fig. 6 is a schematic structural diagram of a straight welding fixture in a state where a tuyere bent pipe is not clamped according to an embodiment of the bent pipe spot welding fixture provided by the utility model;

fig. 7 is a schematic view of an overall assembly structure of the spot welding jig for a bent pipe in a state of not clamping a tuyere bent pipe according to an embodiment of the present invention.

Fig. 8 is a partially enlarged structural view of the scale of the third mounting side plate and the third movable scale mark in fig. 7.

Fig. 9 is a third schematic view of an overall assembly structure of the spot welding jig for a bent pipe in an unclamped tuyere state according to an embodiment of the present invention;

fig. 10 is a fourth schematic view of an overall assembly structure of the spot welding jig for a bent pipe in an unclamped tuyere bent pipe state according to an embodiment of the present invention;

wherein, in the drawings, the reference numerals are mainly as follows:

1-a base; 2-straight seam welding fixture; 21-fixing a bracket; 211-a first supporting riser; 212-a first mounting plate; 213-first escape port; 214-a transverse plate; 215-mounting holes; 216-a third brace bar; 22-mounting the barrel; 23-a first hold-down device; 3-bending the pipe in sections; 31-a first bend; 32-a second bend; 33-a third bend; 34-a fourth bend; 35-a first circular seam; 36-a second circular seam; 37-third circular seam; 38-a first connector; 39-a second connector; 4-a card seat; 41-a support table; 411-a third guide rail; 412-a third slider; 413-a support plate; 42-a backup plate; 421-a first backup plate; 422-a second backup plate; 423-backup plate mounting bracket; 43-positioning inserted link; 44-a third movable riser; 441-positioning supporting plates; 442-positioning the mouth; 443-positioning projection; 444-cushion block; 45-a third drive; 451-third mounting side plate; 452 — a third driver; 453-third lead screw; 454-a graduated scale; 455-scale mark; 456-manual rocker; 5-a first holding device; 51-a first clamping bracket; 511-a first movable riser; 512-a second mounting plate; 513-second escape port; 52-a first chuck; 521-step; 53-second hold-down device; 54-a first drive; 541-a first guide rail; 542-a first slider; 543-a second supporting riser; 544-a first mounting side plate; 545-a first movable side plate; 546-a first driver; 547-first lead screw; 548-a first brace bar; 549-second strut; 6-a second clamping device; 61-a second holding bracket; 611-a second movable vertical plate; 62-a second chuck; 63-a second drive; 631 — a second guide rail; 632-a second slider; 633-a second mounting side plate; 634-a second movable side plate; 635-a second driver; 636-a second lead screw; 7-a yielding groove; 8-a mounting seat; 9-manual valve.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects of the present invention more clearly understood, the present invention is further described in detail below with reference to fig. 1 to 10 and embodiments.

Referring to fig. 1-10, the adjusting and limiting structure of the spot welding jig for bending tube according to the present invention includes: the base 1 is preferably a plate-like structure, and may be mounted on a base, or may be a base or a base structure. The air inlet bent pipe is preferably an air inlet bent pipe, the air inlet bent pipe is a continuous air inlet bent pipe whole formed by welding and processing a plurality of continuous sectional bent pipes with certain inner diameters and in a bent state, manual straight seam spot welding is firstly carried out on the sectional bent pipes through clamping of the straight seam welding clamp 2 on the bent pipe spot welding jig, straight seams on the sectional bent pipes are spliced and shaped, the sectional bent pipes are hoisted to be fixed to the circular seam welding and circular seam welding clamp assembly of the bent pipe spot welding jig, and circular arc welding seams between the sectional bent pipes are continuously and manually welded through a manual handheld welding gun. The inside diameter of the tuyere stock is preferably 100, 125, 150, 200, 250 and 300 mm. The tuyere bent pipe preferably comprises four segmented bent pipes, and adjacent segmented bent pipes are fixed by spot welding, so that the four segmented bent pipes form a continuous tuyere bent pipe whole body. The intersection angle of the four-section subsection elbow of the tuyere elbow positioned at the two ends is preferably 90 degrees or 45 degrees after the central axes at the port parts extend oppositely, and the included angle of the openings of the pair of clamping bottom plates 3 is matched with the angle of the tuyere elbow.

Referring to fig. 1-5, in the present embodiment, the spot welding jig for bending pipe includes: the girth welding fixture assembly is used for welding circular welding seams among the segmented bent pipes 3, and each segmented bent pipe 3 comprises a first bent pipe 31 and a second bent pipe 32 with matched inner diameters; the girth welding jig assembly includes: locate cassette 4 on base 1, include: the device comprises a support table 41 and a backup plate 42, wherein at least one positioning inserted rod 43, preferably three positioning inserted rods, are detachably arranged on the support table 41; a first clamping device 5 provided on the base 1 at one side of the cassette 4, the first clamping device 5 comprising: a first clamping bracket 51, a first chuck 52 mounted on the first clamping bracket 51, the shape and outer diameter of the first chuck 52 are correspondingly matched with the shape and inner diameter of the first elbow 31 respectively; in the present embodiment, the first chuck 52 has a tapered step 521 with an outer diameter gradually decreasing, and the outer diameter of each step 521 is correspondingly matched with the inner diameter of the segmented bent pipe 3 with different inner diameters; a first driving device 54 for driving the first clamping holder 51 toward or away from the cassette 4 in the axial direction of the first chuck 52; a plurality of second pressing devices 53 installed on the first clamping bracket 51, the plurality of second pressing devices 53 being uniformly arranged around the first chuck 52; in the present embodiment, the second pressing device 53 is a pneumatic cylinder pressing device, and a cylinder body of the pneumatic cylinder is mounted on the first clamping bracket 51, and a piston rod thereof extends out of the cylinder body and can extend in the direction of the first chuck 52. As a preferred embodiment, the first clamp bracket 51 includes: the clamping device comprises a pair of first movable vertical plates 511 arranged on a base 1 at intervals, a second mounting disc 512 arranged at one end, close to a clamping seat 4, of the pair of first movable vertical plates 511, the second mounting disc 512 is arranged perpendicular to the base 1, a first chuck 52 is arranged on one end face, close to the clamping seat 4, of the second mounting disc 512, and a plurality of second pressing devices 53 are arranged on the second mounting disc 512 through a mounting seat 8. In this embodiment, the middle of the second mounting plate 512 is provided with a second relief hole 513.

In the present embodiment, the first driving device 54 includes: two groups of first guide rails 541 arranged on the base 1 at intervals, wherein each group of first guide rails 541 comprises a pair of first guide rails 541 arranged on the base 1 at intervals; a pair of first sliding blocks 542 correspondingly matched with the pair of first guide rails 541 of one group of the first guide rails 541 are respectively arranged on two sides of each first movable vertical plate 511, and the pair of first movable vertical plates 511 are respectively and correspondingly arranged on the two groups of the first guide rails 541 in a sliding manner through the first sliding blocks 542; a pair of second supporting vertical plates 543 arranged on the base 1 at intervals between the two sets of first guide rails 541, a first stay connected between the pair of second supporting vertical plates 543, a first mounting side plate 544 connected between the pair of second supporting vertical plates 543, a first movable side plate 545 and a second stay connected between the pair of first movable vertical plates 511; the first chucks 52 are mounted on the pair of second supporting risers 543 through the second relief ports 513; a first driving member 546 mounted to the first mounting side plate 544 on a pair of second support risers for driving the first movement member to reciprocate along a first linear drive mechanism connected to the first driving member 546 parallel to the first guide rail 541; the first linear drive mechanism is preferably a third lead screw 453 connected to the first drive member 546; the first movable riser 511 is mounted on a first moving member mounted on the nut of the first lead screw 547.

The utility model provides a using mode of a bent pipe spot welding jig, which comprises the following steps:

when only carrying out the spot welding operation between two segmentation return bends, need not second clamping device 6, only need first clamping device 5 and the cooperation of cassette 4 can: firstly, the second bending pipe 32 is placed on the support table 41, one end of the second bending pipe 32 abuts against one side of the positioning insertion rod 43, and the outer side surface of the second bending pipe 32 abuts against the backup plate 42; then, one end of the first bent pipe 31 is sleeved on the first chuck 52, and one end of the first bent pipe 31 is pressed on the outer side of the first chuck 52 by the plurality of second pressing devices 53; at this time, the first driving device 54 drives the first clamping support 51 to linearly move along the axial direction of the first chuck 52 close to the clamping seat 4 until the other end of the first bent pipe 31 is matched and butted with the other end of the second bent pipe 32, and at this time, the axial direction of the first bent pipe 31 and the axial direction of the second bent pipe 32 form a first included angle, and when the overall angle of the tuyere bent pipe is 90 degrees, the first included angle is greater than 90 degrees and less than 180 degrees; finally, the worker welds the first circular seam 35 formed between the first bent pipe 31 and the second bent pipe 32 by the hand-held welding machine, and the first bent pipe 31 and the second bent pipe 32 are connected to form the first connecting member 38 by the welding of the first circular seam 35.

In this embodiment, the elbow further includes a third elbow 33 and a fourth elbow 34, and the inner diameters of the first elbow 31, the second elbow 32, the third elbow 33 and the fourth elbow 34 are matched; the girth welding jig assembly further includes: install in the opposite side of cassette 4 and locate second clamping device 6 on base 1, second clamping device 6 includes: a second clamping bracket 61, a second chuck 62 mounted on the second clamping bracket 61, the shape and outer diameter of the second chuck 62 are correspondingly matched with the shape and inner diameter of the first elbow pipe 31 respectively; in the present embodiment, the second chuck 62 is a tapered step 521 with an outer diameter gradually decreasing, and the outer diameter of each step 521 is correspondingly matched with the inner diameter of the segmented bent pipe 3 with different inner diameters; and a second driving means 63 for driving the second clamping holder 61 to approach or separate from the clamping base 4 along the axial direction of the second chuck 62, wherein the axial direction of the second chuck 62 is perpendicular to the axial direction of the first chuck 52, i.e. the moving direction of the first clamping holder 51 and the second clamping holder 61 in the horizontal plane is perpendicular. As a preferred embodiment, the second clamp bracket 61 includes: a pair of second movable vertical plates 611 arranged on the base 1 at intervals, and a second chuck 62 is mounted at one end of the pair of second movable vertical plates 611 close to the clamping seat 4.

Referring to fig. 1, 3-4, in the present embodiment, the second driving device 63 includes: two groups of second guide rails 631 arranged on the base 1 at intervals, wherein each group of second guide rails 631 comprises a pair of second guide rails 631 arranged on the base 1 at intervals; a pair of second sliding blocks 632 correspondingly matched with the pair of second guide rails 631 of one group of second guide rails 631 are respectively arranged on two sides of each second movable vertical plate 611, and the pair of second movable vertical plates 611 are respectively slidably and correspondingly mounted on the two groups of second guide rails 631 through the second sliding blocks 632; a second mounting side plate 633 provided on the base 1 between the two sets of second rails 631, and a second movable side plate 634 connected between the pair of second movable risers 611; a second driving member 635 mounted on the second mounting side plate 633 for driving the second moving member to reciprocate along a second linear driving mechanism connected to the second driving member 635 and parallel to the second guide rail 631; the second linear drive mechanism is preferably a second lead screw 636 connected to a second drive 635; the second movable riser 611 is mounted on a second mover, which is mounted on the nut of the second lead screw 636.

Referring to fig. 1-3, in the present embodiment, the card socket 4 further includes: a third movable vertical plate 44 mounted on the support table 41, and the backup plate 42 is mounted on the third movable vertical plate 44; and a third driving device 45 for driving the third movable riser 44 to move linearly in a direction approaching to or separating from the first clamping device 5 and the second clamping device 6 simultaneously. In this embodiment, the backup plate 42 includes: a first backup plate 421 extending from the third movable vertical plate 44 to one side direction of the positioning insertion rod 43 close to the first clamping device 5, and a second backup plate 422 extending from the third movable vertical plate 44 to the other side direction of the positioning insertion rod 43 close to the second clamping device 6, wherein the first backup plate 421 and the second backup plate 422 are both arranged along a direction perpendicular to the base 1, and a second included angle is formed at the joint of the first backup plate 421 and the second backup plate 422; when the first circular seam 35 is welded, the outer side surface of the second bent pipe 32 abuts against the first backup plate 421.

Referring to fig. 1-4 and 7-10, in the present embodiment, the card socket 4 further includes: and the vertical adjusting structure is used for adjusting the installation height of the positioning supporting plate 441 on the third movable vertical plate. As a preferred embodiment, the vertical adjustment structure includes: the positioning holes 442 are formed in the third movable vertical plate 44 at intervals in the vertical direction, one end of the positioning supporting plate 441 is provided with a positioning protrusion 443 matched with any one of the positioning holes 442, and the positioning protrusion 443 is matched with the positioning holes 442 located at different heights of different third movable vertical plates, so that the sectional bent pipe 3 with different calibers can be adapted. In one embodiment, the top of the positioning plate 441 is provided with at least one spacer 444, and the spacer 444 directly contacts and supports the segmented bent pipe 3. As another example, the vertical adjustment structure may also raise the height of the spacer block 444 by merely padding one or more spacer blocks 444 on top of the positioning plate 441.

In the present embodiment, the third driving device 45 includes: at least one supporting plate 413 installed on the base 1, the supporting table 41 being installed on top of the supporting plate 413; a pair of third guide rails 411 installed at the top of the support stand 41 at intervals; a pair of third sliding blocks 412 correspondingly matched with the pair of third guide rails 411 are respectively arranged on two sides of the third movable vertical plate 44; the lower part of the third movable vertical plate 44 is provided with a positioning supporting plate 441 extending along the axial direction of the third guide rail 411 and a cushion block 444 arranged on the positioning supporting plate 441, and the positioning inserted rod 43 is arranged at the top end of the cushion block 444; a backup plate mounting rack 423 extending to one side of the positioning insertion rod 43 is mounted on the upper part of the third movable vertical plate 44, and the first backup plate 421 and the second backup plate 422 respectively extend to two sides of the positioning insertion rod 43 from the backup plate mounting rack 423; a third mounting side plate 451 provided on the support base 41 between the two sets of third guide rails 411, a third driving member 452 mounted on the third mounting side plate 451, for driving the third moving member to reciprocate along a third linear driving mechanism connected to the third driving member 452 in parallel to the third guide rails 411; the third linear drive mechanism is preferably a third lead screw 453 connected to the third driver 452; the third movable riser 44 is mounted on a third moving member mounted on the nut of the third lead screw 453; as a preferred embodiment, a manual rocker 456 is disposed at the end of the third lead screw 453, and the third lead screw 453 is driven by rotating the manual rocker 456, so as to drive the nut thereof to move linearly along the third lead screw 453; as another example, a motor may be used as a driving member of the third lead screw 453 instead of the manual rocker 456.

In this embodiment, a scale 454 extending in a direction parallel to the third guide rail 411 is disposed at a side end of the third mounting side plate 451, a scale mark 455 is disposed on a side surface of the third movable vertical plate 44 facing the scale 454, and positions of the positioning supporting plate 441 and the cushion block 444 in the horizontal direction are adjusted by the third driving device matching the scale mark 455 and the scale 454, so as to match the segmented bent pipes 3 with different inner diameters.

In a preferred embodiment, the first guide rail 541 is parallel to the second guide rail 631, the third guide rail 411 is located between the first guide rail 541 and the second guide rail 631, an included angle between the third guide rail 411 and the first guide rail 541 and the second guide rail 631 is equal, and the first guide rail 541, the second guide rail 631, the third guide rail 411, the first slider 542, the second slider 632, and the third slider are all C-shaped guide rails and sliders which are correspondingly matched with each other. In a preferred embodiment, the distance between the positioning rods and the two sides of the support table is greater than half of the maximum length of the segmented elbow in the axial direction.

The utility model provides a preferable use mode of the elbow spot welding jig, which comprises the following steps:

after the welding of the first circular seam 35 is completed, the first driving device 54 drives the first clamping support 51 to move linearly away from the clamping seat 4, the plurality of pressing devices loosen the first bent pipe 31 from the outer side of the first chuck 52, the first connecting piece 38 is detached from the circular seam welding fixture assembly, the first connecting piece 38 is placed on the cushion block 444 of the supporting table 41, one end of the second bent pipe 32 abuts against the other side of the positioning insertion rod 43, and the outer side surface of the second bent pipe 32 abuts against the second backup plate 422; the second driving device 63 drives the second clamping support 61 to move linearly close to the clamping seat 4, and the third driving device 45 drives the clamping seat 4 to move linearly until one end of the first bent pipe 31 is sleeved on the second chuck 62;

placing the fourth bent pipe 34 on the cushion 444 of the support platform 41, wherein one end of the fourth bent pipe 34 abuts against one side of the positioning insertion rod 43, and the outer side surface of the fourth bent pipe 34 abuts against the first backup plate 421; one end of the third elbow 33 is pressed on the first chuck 52, the first driving device 54 drives the first clamping support 51 to move linearly close to the clamping seat 4, the third driving device 45 drives the clamping seat 4 to move linearly until the other end of the third elbow 33 is matched and butted with the other end of the fourth elbow 34, the axial direction of the third elbow 33 and the axial direction of the fourth elbow 34 form a third included angle, the second annular seam 36 formed between the third elbow 33 and the fourth elbow 34 is welded through a welding machine, and the third elbow 33 and the fourth elbow 34 are connected into the second connecting piece 39 through the second annular seam 36.

Finally, the first driving device 54 and the second driving device 63 respectively drive the first clamping support 51 and the second clamping support 61 to move linearly and correspondingly away from the clamping seat 4, the positioning insertion rod 43 is detached from the cushion block 444 of the supporting table 41, the first driving device and the second driving device 63 respectively drive the first clamping support 51 and the second clamping support 61 to move linearly and correspondingly close to the clamping seat 4 until one end of the second elbow 32 is in matched butt joint with one end of the fourth elbow 34, and at the moment, the axial direction of the second elbow pipe 32 and the axial direction of the fourth elbow pipe 34 form a fourth included angle, the third driving device 45 drives the clamping seat 4 to move linearly away from the first clamping device 5 and the second clamping device 6 until a third annular seam 37 formed between the second elbow pipe 32 and the fourth elbow pipe 34 is suspended, and the third annular seam 37 is welded through a welding machine, and the first connecting piece 38 and the second connecting piece 39 are connected into a bent pipe whole through the third annular seam 37.

In a preferred embodiment, the first included angle is equal to the second included angle, the second included angle is greater than 90 degrees and less than 180 degrees, the third included angle is equal to the fourth included angle, and after the first connecting member 38 and the second connecting member 39 are connected into the elbow pipe as a whole, the first connecting member 38 and the second connecting member 39 are in mirror symmetry with each other with the third circular seam 37 as a center.

In a preferred embodiment, the first, second and

third drivers

546, 635, 452 are manual adjustment dials, and the first, second and third linear drivers are lead screw and nut drivers. As another example, the first driving unit 546, the second driving unit 635, and the third driving unit 452 may be motors, pneumatic cylinders, oil cylinders, electric cylinders, or other driving devices, and the first linear driving mechanism, the second linear driving mechanism, and the third linear driving mechanism may be linear driving mechanisms such as rack and pinion, a timing pulley, and a pneumatic cylinder rod.

The elbow spot welding jig provided by the utility model further comprises: a straight welding jig 2, the straight welding jig 2 comprising: a fixed bracket 21 arranged on the base 1; the mounting cylinder 22 is mounted on the fixed support 21, and the shape and the outer diameter of the mounting cylinder 22 are correspondingly matched with the shape and the inner diameter of the segmented elbow 3 respectively; install a plurality of first closing device 23 on fixed bolster 21, a plurality of first closing device 23 evenly encircle the setting of installation section 22 for the segmentation return bend 3 that the cover was located on installation section 22 compresses tightly in the outside of installation section 22, and welds the transversal joint of return bend through the welding machine. As a preferred embodiment, the fixing bracket 21 includes: the pressing device comprises a pair of first supporting vertical plates 211 arranged on a base 1 at intervals, and a first mounting disc 212 arranged at one end of each of the first supporting vertical plates 211, wherein the first mounting disc 212 is arranged perpendicular to the base 1, a first yielding position opening 213 is formed in the middle of the first mounting disc 212, and a plurality of first pressing devices 23 are arranged on the first mounting disc 212 through mounting seats 8; a transverse plate 214 and a third support rod 216 connected between the pair of first support risers 211, wherein the transverse plate 214 is provided with a plurality of mounting holes 215 which are correspondingly matched with the segmented bent pipes 3 with different calibers at intervals; the mounting cylinder 22 is mounted on the corresponding mounting hole 215 of the first supporting vertical plate or transverse plate 214 through the second relief hole 513. As a preferred embodiment, the first pressing device 23 and the second pressing device 53 both adopt cylinder pressing devices, and the base 1 is provided with a manual valve 9 for controlling the corresponding cylinder pressing devices of the first pressing device 23 and the second pressing device 53.

In a preferred embodiment, the outer side surfaces of the mounting cylinder 22, the first chuck 52 and the second chuck 62 are uniformly provided with a plurality of yielding grooves 7 extending along the radial direction at intervals, four tolerance points on the outer circumferences of the mounting cylinder 22, the first chuck 52 and the second chuck 62 are provided with the yielding grooves 7, and the depth of the yielding grooves 7 is greater than 3 mm, so that the segmented bent pipe 3 is pressed on the outer side surface of the mounting cylinder 22, the first chuck 52 or the second chuck 62 by the pressing device and is not welded to the outer side surface of the mounting cylinder 22, the first chuck 52 or the second chuck 62 in the subsequent welding due to the yielding effect of the yielding grooves 7. Before the circular seam welding clamp assembly of the bent pipe spot welding jig provided by the utility model is used for circular seam welding of the tuyere bent pipe, the straight seam welding clamp 2 on the same bent pipe spot welding jig provided by the utility model can be used for respectively carrying out straight seam welding on the sectional bent pipe of each section of tuyere bent pipe.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an elbow spot welding tool's regulation limit structure which characterized in that includes:

a base;

locate cassette on the base includes: the supporting platform, a third movable vertical plate arranged on the supporting platform and a backup plate arranged on the third movable vertical plate;

the lower part of the third movable vertical plate is provided with a positioning supporting plate and at least one positioning inserted rod arranged at the top end of the positioning supporting plate; the vertical adjusting structure is used for adjusting the installation height of the positioning supporting plate on the third movable vertical plate; a backup plate is arranged at the upper part of the third movable vertical plate;

a first clamping device disposed on the base on one side of the cartridge, the first clamping device comprising: the first clamping support is provided with a first chuck, the first chuck is arranged on the first clamping support and is in a tapered ladder shape with gradually reduced outer diameter, and the outer diameter of each ladder pole is correspondingly matched with the inner diameters of the segmented bent pipes with different inner diameters; the first driving device drives the first clamping support to approach or depart from the clamping seat along the axial direction of the first chuck;

the second pressing devices are arranged on the first clamping support and are uniformly arranged around the first chuck; the third driving device is used for driving the third movable vertical plate to linearly move along the direction close to or far away from the first clamping device;

placing the second bent pipe on the positioning support plate, wherein one end of the second bent pipe is abutted against one side of the positioning insertion rod, and the outer side face of the second bent pipe is abutted against the backup plate; one end of the first bent pipe is sleeved on the first chuck, and one end of the first bent pipe is pressed on the outer side of the first chuck by the plurality of second pressing devices;

the first driving device drives the first clamping support to be close to the clamping seat in the axial direction of the first chuck in a linear motion mode, the vertical adjusting structure and the third driving device are used for adjusting the position of the second bent pipe relative to the base in the vertical direction and the horizontal direction respectively at the same time until the other end of the first bent pipe is matched and butted with the other end of the second bent pipe, a welding machine is used for welding a first annular seam formed between the first bent pipe and the second bent pipe, and the first bent pipe and the second bent pipe are connected into a first connecting piece through the first annular seam.

2. The adjusting and limiting structure of the elbow spot welding jig according to claim 1,

the vertical adjustment structure includes:

and at least one cushion block is arranged at the top of the positioning supporting plate.

3. The adjusting and limiting structure of the elbow spot welding jig according to claim 2,

the third driving device includes:

the supporting platform is arranged on the top of the supporting plate;

a pair of third guide rails mounted on the top of the support platform at intervals; a pair of third sliding blocks which are correspondingly matched with the pair of third guide rails are respectively arranged on two sides of the third movable vertical plate;

the third movable vertical plate is mounted on the third moving part;

the third mounting side plate side end is provided with a graduated scale extending in a direction parallel to the third guide rail, the third movable vertical plate is provided with a scale mark facing the side face of the graduated scale, and the third driving device is matched with the scale mark to adjust the positions of the positioning support plate and the cushion block relative to the base in the horizontal direction so as to match segmented bent pipes with different inner diameters.

4. An adjusting and limiting structure of a spot welding jig for an elbow according to claim 3, wherein the elbow further comprises a third elbow and a fourth elbow, and the inner diameters of the first elbow, the second elbow, the third elbow and the fourth elbow are matched;

the girth welding jig assembly further comprises:

install in the opposite side of cassette is located second clamping device on the base, second clamping device includes:

the backup plate includes:

a first backup plate extending from the third movable vertical plate to one side direction of the positioning insertion rod close to the first clamping device, and a second backup plate extending from the third movable vertical plate to the other side direction of the positioning insertion rod close to the second clamping device, wherein the first backup plate and the second backup plate are both arranged along a direction perpendicular to the base; when the first circular seam is welded, the outer side face of the second bent pipe abuts against the first backup plate;

after the first girth welding is completed, the first driving device drives the first clamping support to move linearly away from the clamping seat, the plurality of pressing devices loosen the first bent pipe from the outer side of the first chuck, the first connecting piece is arranged on the cushion block after being detached from the girth welding clamp assembly, one end of the second bent pipe abuts against the other side of the positioning insertion rod, and the outer side face of the second bent pipe abuts against the second backup plate; the second driving device drives the second clamping support to move linearly close to the clamping seat, and the third driving device drives the clamping seat to move linearly until one end of the first bent pipe is sleeved on the second chuck;

placing the fourth bent pipe on the cushion block, wherein one end of the fourth bent pipe is abutted against one side of the positioning inserted bar, and the outer side face of the fourth bent pipe is abutted against the first backup plate; one end of the third bent pipe is pressed on the first chuck, the first driving device drives the first clamping support to move linearly close to the clamping seat, the third driving device drives the clamping seat to move linearly until the other end of the third bent pipe is matched and butted with the other end of the fourth bent pipe, a welding machine is used for welding a second annular seam formed between the third bent pipe and the fourth bent pipe, and the third bent pipe and the fourth bent pipe are connected into a second connecting piece through the second annular seam;

the first driving device and the second driving device respectively drive the first clamping support and the second clamping support to correspondingly move away from the clamping seat in a linear mode, the positioning insertion rod is detached from the cushion block, the first driving device and the second driving device respectively drive the first clamping support and the second clamping support to correspondingly approach the clamping seat for linear movement until one end of the second bent pipe is matched and butted with one end of the fourth bent pipe, the third driving device drives the clamping seat to move linearly away from the first clamping device and the second clamping device until a third circular seam formed between the second bent pipe and the fourth bent pipe is suspended, and welding the third annular seam by a welding machine, and connecting the first connecting piece and the second connecting piece into a bent pipe whole through the third annular seam.

5. The adjusting and limiting structure of the elbow spot welding jig according to claim 4, wherein the first clamping bracket comprises:

the clamping seat is arranged on the base, the clamping seat is arranged on the clamping seat, and the clamping seat is arranged on the clamping seat;

the second clamping bracket includes:

the second chuck is arranged at one end, close to the clamping seat, of the second movable vertical plates.

6. The adjusting and limiting structure of the elbow spot welding jig according to claim 5,

the first driving device includes:

the first guide rails are arranged on the base at intervals, and each first guide rail comprises a pair of first guide rails arranged on the base at intervals;

the first supporting vertical plates are arranged on the base at intervals between the two groups of first guide rails, the first supporting rods are connected between the pair of second supporting vertical plates, the first mounting side plate is connected between the pair of second supporting vertical plates, and the first movable side plate and the second supporting rods are connected between the pair of first movable vertical plates; the first chuck passes through the second abdicating hole and is arranged on the pair of second supporting vertical plates;

the first driving part is mounted on the first mounting side plate and used for driving the first moving part to reciprocate along a first linear driving mechanism which is connected to the first driving part and is parallel to the first guide rail;

the first movable side plate is mounted on the first moving part;

the second driving device includes:

a second mounting side plate arranged on the base between the two groups of second guide rails, and a second movable side plate connected between the pair of second movable vertical plates;

the second movable side plate is mounted on the second moving part.

7. The adjusting and limiting structure of the elbow spot welding jig according to claim 6, wherein the first driving member, the second driving member and the third driving member are all manual adjusting turntables, and the first linear driving mechanism, the second linear driving mechanism and the third linear driving mechanism are all lead screw nut driving mechanisms.

8. An adjusting and limiting structure of the elbow spot welding jig according to claim 6, wherein the first guide rail is parallel to the second guide rail, the third guide rail is located between the first guide rail and the second guide rail, and the included angles between the third guide rail and the first guide rail and the second guide rail are equal in size;

the distance between the two sides of the support platform of the positioning inserted rod is larger than one half of the maximum length of the segmented elbow in the axial direction.

9. The adjusting and limiting structure of the elbow spot welding jig according to claim 4, wherein the first chuck and the second chuck are provided with a plurality of yielding grooves extending along the radial direction thereof at regular intervals on the outer side surfaces thereof, and the four quadrant points of the outer circumference of the first chuck and the second chuck are provided with the yielding grooves, and the depth of the yielding grooves is greater than 3 mm.

10. An adjusting and limiting structure of the elbow spot welding jig according to any one of claims 1 to 9, further comprising:

a straight seam welding jig comprising:

the fixed bracket is arranged on the base; the fixing bracket includes:

the device comprises a pair of first supporting vertical plates arranged on the base at intervals, a transverse plate and a third supporting rod connected between the pair of first supporting vertical plates, wherein a plurality of mounting holes which are correspondingly matched with segmented bent pipes with different calibers are arranged on the transverse plate at intervals;

the first mounting disc is arranged at one end of each of the first supporting vertical plates and is perpendicular to the base, and a first yielding port is formed in the middle of the first mounting disc;

the mounting cylinder passes through the first abdicating hole and is mounted on the corresponding mounting hole of the first supporting vertical plate or the transverse plate;

install a plurality of first closing devices on the fixed bolster, a plurality of first closing devices evenly encircle the setting of installation section of thick bamboo for locate the cover the segmentation return bend on the installation section of thick bamboo compress tightly in the outside of installation section of thick bamboo, and it is right through the welding machine the transversal joint of return bend welds.