CN205927607U - High precision welding and compound anchor clamps structure that bonds - Google Patents

Abstract

The utility model relates to a high precision welding and compound anchor clamps structure that bonds, including the support, shelve the platform, clamping mechanism, its characterized in that: shelving the platform and shelving the piece including the fixed piece of shelving with sliding, the fixed piece of shelving is fixed on the support, slide shelve the piece then the restraint the support shelve on the guide rail and by the drive of power cylinder, the left and right sides of support is equipped with limit structure respectively, clamping mechanism includes compact heap and side compact heap, goes up the compact heap and is compressed tightly the cylinder drive and can be reciprocated perpendicularly by main, goes up and still is equipped with location structure on the compact heap, and the side compact heap shelves that the piece is relative to be set up with sliding, and the side compact heap is driven by the tight cylinder of side pressure. It is a high precision welding and compound anchor clamps structure that bonds who welds simultaneously to the collection petticoat pipe specially and bond the process, and these anchor clamps enable album petticoat pipe and reduce welding deformation in welding process, guarantee the straightness accuracy and the plane degree of each hem.

Description

A kind of precision welding and bonding composite fixture structure

Technical field

The utility model is related to one kind for welding and bonding process auxiliary equipment, and more particularly, to a kind of exhaust fume collecting hood that is used for welds Connect and face glass is bonded to precision welding and the bonding composite fixture structure on exhaust fume collecting hood.

Background technology

Exhaust fume collecting hood is the main parts size of range hood, typically has sheet metal punching press bending to be welded again, exhaust fume collecting hood Front along, left margin and the right along be respectively provided with the front flanging dug upwards, left folding while and during right folding, front flanging, left folding side and The position that right folding side contacts with each other is fixed together using laser welding.As Patent No. ZL201320636234.6 (bulletin Number be CN203628752U) Chinese utility model patent《A kind of seamless welding range hood》Disclose such a exhaust fume collecting hood. The quality of welding directly affects the quality of exhaust fume collecting hood, because exhaust fume collecting hood is made up of sheet metal, and front flanging, left folding while and during right folding relatively For long and narrow, such as position in welding bad, be also easy to produce welding deformation, can cause front flanging, left folding while and straight line during right folding Degree, flatness are undesirable, thus affecting the quality of exhaust fume collecting hood.It is all that part is completed using single outside positioning and clamp system Positioning and clamping, it is also unstable to be so difficult to adjustment, because the action of two clamping cylinders in left and right exists successively all the time, The too tight or too loose of folder all can make positioning be forbidden, and tension easily causes part deformation, and pine excessively can not meet welding to clamping gap Requirement.Traditional outside compact heap is simple compact heap, compresses product in welding process.When welding generation is larger During heat, and workpiece will produce oxidation stain when plumb joint coaxial shielding gas removal welding seam heat does not also disperse.

The front end face of exhaust fume collecting hood is the face towards user, is provided with control button, the lampblack absorber of existing higher-end thereon Use touch-button, because of the design feature of touch-button, for making exhaust fume collecting hood attractive in appearance, can be adhesively fixed on front end face Face glass.

Two methods are mainly had to bond to face glass on the front end face of exhaust fume collecting hood at present：A kind of be traditional bonding adopt With manually bonding on blower hood by face glass, this mode bonding is extremely inefficient, on the premise of cost of labor increases, Lead to processing cost to be significantly increased, and because there is no pressure holding step, lead to bonding not firm, face glass easily departs from exhaust fume collecting hood Front end face, and because of artificial bonding, bonding location can be made not accurate, high to workman's technical requirements.Another kind is using easy Adhesive tool carries out bonding to face glass, there is following defect using easy frock at present, the size of first bonding is not Easily ensure that precision is low, face glass is all placed and positioned using artificial by tradition.So face glass positioning all It is made on the workbench of bottom, workman places positioning and placement during part and jointly carries out will there are a lot of destabilizing factors, by it When face glass appearance and size is less than exhaust fume collecting hood upper edge, the positioning of face glass is difficult to be arranged on lower table, member Work operates and just more bothers.

And the fixture currently used for exhaust fume collecting hood welding and bonding is independent two kind fixture so that welding and bonding are divided into Twice independent process completes, and causes production efficiency low.

Utility model content

Technical problem to be solved in the utility model is to provide one kind to be specifically designed for for above-mentioned state of the art Exhaust fume collecting hood is welded and the precision welding of bonding process and bonding composite fixture structure simultaneously, and this fixture can make exhaust fume collecting hood exist Reduce welding deformation it is ensured that the linearity of each flanging and flatness in welding process.

The utility model solves the technical scheme that adopted of above-mentioned technical problem：A kind of precision welding is compound with bonding Clamp structure, including support, support is provided with the platform of shelving that the convex upper edge inner surface for exhaust fume collecting hood in side shelves positioning, position It is provided with clamp system in the left and right sides shelving platform；It is characterized in that：Described platform of shelving includes fixing rest block and is located at The sliding rest block of the fixing rest block left and right sides, fixing rest block is fixed on support, and sliding rest block then constrains in support Rest block guide rail on and driven by actuating cylinder and can compress or side edge away from exhaust fume collecting hood inner surface, the left and right of support It is respectively provided on two sides with to sliding rest block outset from carrying out spacing position limiting structure；Described clamp system includes flat positioned at shelving Upper compact heap above platform and be located at the side compression block shelving the platform left and right sides, upper compact heap constrains on support and by main pressure Tight air cylinder driven and can vertically move, upper compact heap is additionally provided with order to be positioned at face glass assembly under upper compact heap The location structure of end face, upper compact heap move down the outer surface that face glass assembly can be pressed on exhaust fume collecting hood upper edge, described Side compression block is oppositely arranged with sliding rest block, and side compression block can be compressed or the side away from exhaust fume collecting hood by side compression air cylinder driven The outer surface at edge.

Preferably, above-mentioned position limiting structure includes position limiting structure and including the limited block that is fixed on support and is threaded in Adjusting screw on limited block, sliding rest block has the connecting portion extending back, the piston rod of this connecting portion and actuating cylinder It is connected, the head of described adjusting screw is in order to join with connecting portion gear.This position limiting structure has sliding rest block outset from adjustable Advantage, only need to rotate adjusting screw during regulation, expose outside distance on limited block by adjusting the head of adjusting screw, realize The regulation of spacing distance, after the head contact of connecting portion and adjusting screw, sliding rest block just can not outwards sliding again, realize Precise control to sliding rest block final position, whole mechanism can be adjusted to the positioning of part by adjusting screw, Flexibly accurate adjustment both can ensure that the requirement of exhaust fume collecting hood and face glass assembly assembly precision, can contain exhaust fume collecting hood again and exist The a range of size fluctuation occurring in front operation manufacturing process.

Improve further, above-mentioned limited block is equipped with sleeve, in sleeve, be provided with the buffering that energy relative sleeve moves up and down Bar and act on buffer bar and make buffer bar remain the spring of overhanging trend, sleeve is stretched out in order to right in the front end of buffer bar Described connecting portion forms resilient support, and in the state of buffer bar is completely overhanging, the front end of buffer bar exceeds the head of adjusting screw Portion.Buffer bar has cushioning effect to the movement of sliding rest block, during moving, can connect with buffer bar first outside sliding rest block Touch, buffer bar under the action of the spring, slows down the power of sliding rest block and the head direct collision of adjusting screw, prevents from breaking adjustment Screw or sliding rest block.

Improve further, the bottom left and right sides of above-mentioned support front end face is fixed with order in the side edge with exhaust fume collecting hood Surface against backstop, the left and right sides of support front end face is respectively fixed with auxiliary compression cylinder, the work of auxiliary compression cylinder Stopper rod is fixed with auxiliary compact heap, and under piston rod inside contracts state, auxiliary compact heap compresses the top surface of exhaust fume collecting hood.By auxiliary The compression of compact heap can be positioned at safer for exhaust fume collecting hood on support it is ensured that welding and bonding quality.

Improve further, in above-mentioned side compression block, be provided with the first air flue, the first of the neighbouring exhaust fume collecting hood of outlet of the first air flue Welding position, is provided with lateral inlet suction port at the air inlet of the first air flue；The left and right sides of described upper compact heap is fixed with air blowing Compact heap, is provided with the second air flue, the first welding position of the neighbouring exhaust fume collecting hood of outlet of the second air flue, the second gas in upper air blowing compact heap It is provided with to inlet suction port at the air inlet in road.Side compression block and upper air blowing compact heap are in addition to substrate hold-down function also in the position of weld seam Devise orientation air blowing protection structure, make workpiece can obtain good gas shield all the time in welding, so that workpiece is not aoxidized Variable color, improves product exquisiteness degree.This structure has and is compressed position while welding and carried out gas shield dual-use function.By inertia Gas (as argon gas) passes through fixed inlet suction port blowout to be shrouded in face of weld, makes face of weld and the air insulated of heating. Above protection of blowing is mainly protects in exhaust fume collecting hood upper edge and side along the welding position of junction.

It is that some complicated weld seams and the weld seam being not easy to be tracked protecting are carried out with the fixed protection of blowing of profiling, make whole Individual weld seam is constantly in by guard mode in welding process, can achieve the effective protection to complicated weld seam.Further improve, The left and right sides on above-mentioned support is respectively provided with an after-blow gas compact heap, and after-blow gas compact heap is by the rear compression gas being fixed on support Cylinder drive and before and after energy sliding to compress the rear end face of exhaust fume collecting hood, in after-blow gas compact heap, be provided with the 3rd air flue, the 3rd air flue Second welding position of the neighbouring exhaust fume collecting hood of outlet, is provided with backward inlet suction port at the air inlet of the 3rd air flue.The weldering of this air blowing protection Connect the junction that position is ornamental strip and exhaust fume collecting hood side edge in face glass assembly, welding position is in tilted layout, Wo Menke The notch that setting is mated with the welding position tilting at after-blow gas compact heap carries out profiling process, to realize weld seam at this is had Effect protection.

Preferably, the location structure on above-mentioned upper compact heap includes multiple suckers being arranged within compact heap, inhale Disk manifests the lower surface of compact heap.Sucker suction has the advantages that not damage face glass surface, and adsorbs and release suction Attached easy to operate, it is evacuated in sucker during absorption, during releasing, as long as sucker is communicated with the external world.

As improvement, two auxiliary clamp cylinders, the piston rod of auxiliary clamp cylinder are installed inside above-mentioned upper compact heap Stretch out the front end face of compact heap, and the piston rod in auxiliary clamp cylinder is fixed with auxiliary clamp block, after auxiliary clamp block Shifting can press to the front edge of face glass assembly, and the top of support is fixed with two locating piece cylinders, the piston of locating piece cylinder Locating piece is fixed with bar, the reach of locating piece can position to the locating slot on ornamental strip in face glass assembly.Auxiliary Gripping block not only plays the effect of auxiliary positioning face glass assembly, before auxiliary clamp block also acts as and completes glass board component simultaneously The effect of positioning.

For preventing from scratching face glass assembly, the lower surface of above-mentioned upper compact heap is fixed with non-metallic elastic material and makes Liner, liner has the perforation revealing for sucker.

Above-mentioned upper compact heap constrains in energy sliding up and down on support by compact heap guide rail, so can ensure that compact heap Sliding is more accurate up and down, will not offset, the cylinder body of described main compression cylinder is hinged on the bottom of support, the piston of main compression cylinder Bar is then hinged on the back side of compact heap.Main compression cylinder is arranged on the bottom of support, reduces length and the volume of whole device, More compact structure.

Compared with prior art, the utility model has the advantage of：

1st, each flanging pass through at welding position sliding rest block and side compression block to the compacting at exhaust fume collecting hood edge so that Even if the welding deformation that also will not arch upward because of welding at the edge of neighbouring welding position, flanging smooth is effectively ensured Degree and linearity, thus lift the quality of exhaust fume collecting hood；During bonding, composition surface coats glue, is driven by main compression cylinder Moving down of upper compact heap, the face glass assembly being fixed on upper compact heap compression can be bonded on the upper edge of exhaust fume collecting hood, And persistently keep the pressure of certain time it is ensured that glue becomes dry, make face glass bonding with exhaust fume collecting hood firm, because upper compact heap is complete Portion compresses on glass panels, solves the problems, such as that the bonding gap between exhaust fume collecting hood and face glass is uneven.

2nd, the design employs positioned internal, outside clamp system, first passes through internal motivation cylinder traction end sliding and shelves Move outside block and stable for exhaust fume collecting hood is fixed, then compressed by outer side clamping cylinder, accordingly even when there is the priority of cylinder Action does not interfere with positioning and the deformation of product yet, and can by position limiting structure to sliding rest block outset from limiting Position is it is ensured that location dimension is accurate；Stable Telescopic positioning device is formed by sliding rest block, rest block guide rail and actuating cylinder, Fastening during part positioning can be made stable, easy and convenient during pickup.And the expanding force of detent mechanism actuating cylinder must be more than The pressure of outside compression cylinder, reliable and stable during such guarantee parts assembly.

3rd, there is no detent mechanism on upper compact heap in traditional design, be all using manually being placed face glass assembly With positioning, the positioning of such face glass assembly is all made on the workbench of bottom, and workman places positioning during face glass assembly Jointly carry out there are a lot of destabilizing factors with placing, face glass assembly appearance and size is worked as by it and is less than exhaust fume collecting hood top Along when, the positioning of face glass is difficult to be arranged on lower table, and employee operates and just more bothers.The design adopts upper pressure On tight block, detent mechanism is set, can be first by positioning stable for face glass assembly be fixed on upper compact heap, then by compressing Cylinder and guide rail drive upper compact heap to push the compression work completing face glass assembly and exhaust fume collecting hood upper edge.

Brief description

Fig. 1 is the front perspective view (removing exhaust fume collecting hood) of the utility model embodiment；

Fig. 2 is the back side perspective view (removing exhaust fume collecting hood) of the utility model embodiment；

Fig. 3 is the front view (removing exhaust fume collecting hood) of the utility model embodiment；

Fig. 4 is the top view (removing exhaust fume collecting hood) of the utility model embodiment；

Fig. 5 is that the front perspective view of the utility model embodiment (removes exhaust fume collecting hood and the protecgulum of upper compact heap Plate)；

Fig. 6 is the front perspective view (installing exhaust fume collecting hood) of the utility model embodiment；

Fig. 7 is the back side perspective view (installing exhaust fume collecting hood) of the utility model embodiment；

Fig. 8 is the three-dimensional signal of sliding rest block drive part and associated limit structure division in the utility model embodiment Figure；

Fig. 9 is the stereo decomposing of sliding rest block drive part and associated limit structure division in the utility model embodiment Figure；

Figure 10 is the perspective view of side compression block in the utility model embodiment；

Figure 11 is the perspective view of after-blow gas compact heap in the utility model embodiment；

Figure 12 is the perspective view of upper air blowing compact heap in the utility model embodiment；

Figure 13 by the utility model embodiment processing exhaust fume collecting hood perspective view；

Figure 14 by the utility model embodiment processing face glass assembly perspective view.

Specific embodiment

Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.

As shown in Fig. 1～14, it is a preferred embodiment of the present utility model.

A kind of precision welding and bonding composite fixture structure, the present embodiment is with the welding of exhaust fume collecting hood 3 and by face glass Assembly 10 bond to precision welding on exhaust fume collecting hood 3 with as a example bonding composite fixture structure.As shown in figure 13, exhaust fume collecting hood 3 has The top surface 33 of central aperture, the front side of top surface 33 and the left and right sides is had to be respectively provided with the front bending inwards along 31 and side edge, Front forms the first welding position 4a along the position that the side of 31, arranged on left and right sides contacts with each other along 32, and it adopts laser welding to fix Together, wherein front is position towards user along 31, is provided with control button thereon.Decorate in face glass assembly 10 Bar 101 forms the second welding position 4b with the side of exhaust fume collecting hood 3 along 32 junction.

Including support 1, support 1 is provided with convex upper edge 31 inner surface for exhaust fume collecting hood 3 in side, and to shelve shelving of positioning flat Platform, is provided with clamp system positioned at the left and right sides shelving platform.

Shelve the sliding rest block 5 that platform includes fixing rest block 2 and is located at fixing rest block 2 left and right sides, fixation is put Put block 2 to be fixed on support 1, sliding rest block 5 then constrains on the rest block guide rail 51 of support 1 and driven by actuating cylinder 6a And can compress or the inner surface along 32 for the side away from exhaust fume collecting hood 3, being respectively arranged on the left side and the right side to sliding rest block 5 of support 1 Outset is from carrying out spacing position limiting structure.Position limiting structure includes limited block 9 and the spiral shell that position limiting structure includes being fixed on support 1 Line is connected to the adjusting screw 91 on limited block 9, and adjusting screw 91 is locked on limited block 9 also by locking nut 92, sliding Rest block 5 has the connecting portion 52 extending back, and this connecting portion 52 is connected with the piston rod of actuating cylinder 6a, adjusting screw 91 Head 911 is in order to join with connecting portion 52 gear.Sleeve 11 is equipped with limited block, is provided with sleeve 11 and can move down on relative sleeve 11 Dynamic buffer bar 12 and act on buffer bar 12 and make buffer bar 12 remain the spring 13 of overhanging trend, buffer bar 12 Sleeve 11 is stretched out in order to form resilient support to described connecting portion 52 in front end, in the state of buffer bar 12 is completely overhanging, buffering The front end of bar 12 exceeds the head 911 of adjusting screw.

Clamp system includes being located at the upper compact heap 7 shelved above platform and is located at the side compression shelving the platform left and right sides Block 8, upper compact heap 7 constrains on support 1 and is driven and can vertically be moved by main compression cylinder 6b, and upper compact heap 7 passes through Compact heap guide rail 72 constrains in energy sliding up and down on support 1, and the cylinder body of main compression cylinder 6b is hinged on the bottom of support 1, main The piston rod of compression cylinder 6b is then hinged on the back side of compact heap 7.It is additionally provided with upper compact heap 7 in order to by face glass assembly The location structure of 10 lower surfaces being positioned at compact heap 7, face glass assembly 10 can be pressed on collection by moving down of upper compact heap 7 The outer surface of the upper edge 31 of petticoat pipe, side compression block 8 is oppositely arranged with sliding rest block 5, and side compression block 8 is by side compression cylinder 6c Drive and can compress or the outer surface along 32 for the side away from exhaust fume collecting hood 3.

As shown in figure 5, upper compact heap 7 is made up of the front shroud that the matrix being provided with inner chamber and lid are located on matrix, upper compression Location structure on block 7 includes multiple suckers 18 being arranged within compact heap 7, and sucker 18 manifests under compact heap 7 End face is to adsorb to face glass assembly 10.It is fixed with what non-metallic elastic material was made on the lower surface of upper compact heap 7 Liner 71, liner 71 has the perforation revealing for sucker 18.The inside of upper compact heap 7 is provided with two auxiliary clamp gas The piston rod of cylinder 6f, auxiliary clamp cylinder 6f stretches out the front end face of compact heap 7, and solid in the piston rod of auxiliary clamp cylinder 6f Surely there is auxiliary clamp block 19, the rear shifting of auxiliary clamp block 19 can press to the front edge of face glass assembly 10, the top of support 1 It is fixed with two locating piece cylinder 6g, the piston rod of locating piece cylinder 6g is fixed with locating piece 20, the reach energy of locating piece 20 Locating slot 102 on ornamental strip 101 in face glass assembly 10 is positioned.

The bottom left and right sides of support 1 front end face be fixed with order to inner surface along 32 of the side of exhaust fume collecting hood 3 against Backstop 14, the left and right sides of support 1 front end face is respectively fixed with auxiliary compression cylinder 6d, the piston rod of auxiliary compression cylinder 6d It is fixed with auxiliary compact heap 15, inside contract under state in the piston rod of auxiliary compression cylinder 6d, auxiliary compact heap 15 compression exhaust fume collecting hood 3 Top surface 33.

It is provided with the first air flue 81 in side compression block 8, the first welding position 4a of the neighbouring exhaust fume collecting hood 3 of outlet of the first air flue 81, It is provided with lateral inlet suction port 82 at the air inlet of the first air flue 81；The left and right sides of described upper compact heap 7 is fixed with air blowing pressure Tight block 16, is provided with the second air flue 161, the first welding of the neighbouring exhaust fume collecting hood of outlet of the second air flue 161 in upper air blowing compact heap 16 Position 4a, is provided with to inlet suction port 162 at the air inlet of the second air flue 161.

The left and right sides on support 1 is respectively provided with an after-blow gas compact heap 17, and after-blow gas compact heap 17 is by being fixed on support 1 Rear compression cylinder 6e drive and before and after energy sliding to be pressed on the rear end face of exhaust fume collecting hood 3, in after-blow gas compact heap 17, be provided with the Three air flues 171, the second welding position 4b of the neighbouring exhaust fume collecting hood 3 of outlet of the 3rd air flue 171, set at the air inlet of the 3rd air flue 171 There is backward inlet suction port 172.

The operation principle of this clamp structure and the course of work are as follows：

Each cylinder resets, and upper edge 31 inner surface of exhaust fume collecting hood is shelved on and shelves on platform, actuating cylinder 6a action band Dynamic sliding rest block 5 is outer to move the inner surface that compression exhaust fume collecting hood side is along 32, and then side compression cylinder 6c action drives side compression block 8 The interior outer surface along 32 for the compression exhaust fume collecting hood side that moves is it is ensured that the expanding force of actuating cylinder 6a must be more than outer side compression cylinder The pressure of 6b.

Face glass assembly 10 is placed the lower surface of upper compact heap 7 it is ensured that locating piece 20 inserts face glass assembly 10 In locating slot 102 on middle ornamental strip 101, auxiliary clamp cylinder 6f drives in auxiliary clamp block 19 and moves, and presses to face glass group The front edge of part 10, completes auxiliary positioning face glass assembly 10 and ensures the effect of its exact position, and sucker 18 action will be inhaled Disk is fixed on the lower surface of compact heap 7, coats glue in the bottom surface of the upper edge 31 of exhaust fume collecting hood 3 or face glass assembly 10, Locating piece 20 and auxiliary clamp block 19 reset, and in main compression cylinder 6b drive, compact heap 7 moves down, and presses to the upper edge of exhaust fume collecting hood 31, and pressurize.

Then, rear compression cylinder 6e action drives after-blow gas compact heap 17 reach to be pressed on the rear end face of exhaust fume collecting hood 3, finally Welded, the air flue on each compact heap leads to inert gas (as argon gas) simultaneously, and blowout is shrouded in face of weld, makes the weldering of heating Connect surface and air insulated.

After pressurize for a period of time, each cylinder resets, and takes out the exhaust fume collecting hood 3 being bonded with face glass assembly 10.

Claims (10)

1. a kind of precision welding and bonding composite fixture structure, including support (1), support (1) be provided with side convex for collect cigarette What upper edge (31) inner surface of cover (3) shelved positioning shelves platform, is provided with clamp system positioned at the left and right sides shelving platform； It is characterized in that：Described platform of shelving includes fixing rest block (2) and shelves positioned at the sliding fixing rest block (2) left and right sides Block (5), fixing rest block (2) is fixed on support (1), and sliding rest block (5) then constrains in the rest block guide rail of support (1) (51) upper and driven by actuating cylinder (6a) and can compress or side edge (32) away from exhaust fume collecting hood (3) inner surface, support (1) Be respectively arranged on the left side and the right side to sliding rest block (5) outset from carrying out spacing position limiting structure；Described clamp system includes It is located at the upper compact heap (7) shelved above platform and be located at the side compression block (8) shelving the platform left and right sides, upper compact heap (7) Constrain in support (1) upper and driven and can vertically be moved by main compression cylinder (6b), upper compact heap (7) is additionally provided with order to Face glass assembly (10) is positioned at the location structure of upper compact heap (7) lower surface, moving down of upper compact heap (7) can be by glass Panel assembly (10) is pressed on the outer surface of the upper edge (31) of exhaust fume collecting hood, described side compression block (8) and sliding rest block (5) phase To setting, side compression block (8) is driven and can be compressed or outer along (32) away from the side of exhaust fume collecting hood (3) by side compression cylinder (6c) Surface.

2. precision welding according to claim 1 with bonding composite fixture structure it is characterised in that：Described position limiting structure Include, including position limiting structure, the limited block (9) that is fixed on support (1) and be threaded in the adjusting screw on limited block (9) (91), sliding rest block (5) has the connecting portion (52) extending back, the piston rod of this connecting portion (52) and actuating cylinder (6a) It is connected, the head (911) of described adjusting screw (91) is in order to join with connecting portion (52) gear.

3. precision welding according to claim 2 with bonding composite fixture structure it is characterised in that：On described limited block It is equipped with sleeve (11), being provided with sleeve (11) can relative sleeve (11) buffer bar (12) that moves up and down and act on buffering Bar (12) simultaneously makes buffer bar (12) remain the spring (13) of overhanging trend, and the front end of buffer bar (12) is stretched out sleeve (11) and used So that resilient support, in the state of buffer bar (12) is completely overhanging, the front end of buffer bar (12) are formed to described connecting portion (52) Head (911) beyond adjusting screw.

4. precision welding according to claim 1 with bonding composite fixture structure it is characterised in that：Described support (1) The bottom left and right sides of front end face be fixed with order to the side of exhaust fume collecting hood (3) along (32) inner surface against backstop (14), the left and right sides of support (1) front end face is respectively fixed with auxiliary compression cylinder (6d), the piston of auxiliary compression cylinder (6d) Bar is fixed with auxiliary compact heap (15), inside contracts under state in the piston rod of auxiliary compression cylinder (6d), auxiliary compact heap (15) pressure Compact the top surface (33) of petticoat pipe (3).

5. precision welding according to claim 1 with bonding composite fixture structure it is characterised in that：Described side compression block (8) it is provided with the first air flue (81) in, the outlet of the first air flue (81) is adjacent to first welding position (4a) of exhaust fume collecting hood (3), the first gas It is provided with lateral inlet suction port (82) at the air inlet in road (81)；The left and right sides of described upper compact heap (7) is fixed with air blowing pressure Tight block (16), is provided with the second air flue (161), the outlet of the second air flue (161) is adjacent to exhaust fume collecting hood () in upper air blowing compact heap (16) The first welding position (4a), be provided with the air inlet of the second air flue (161) to inlet suction port (162).

6. precision welding according to claim 1 with bonding composite fixture structure it is characterised in that：Described support (1) On the left and right sides be respectively provided with after-blow gas compact heap (17), after-blow gas compact heap (17) is by the rear pressure being fixed on support (1) Tight cylinder (6e) drive and before and after energy sliding to be pressed on the rear end face of exhaust fume collecting hood (3), in after-blow gas compact heap (17), be provided with the Three air flues (171), the outlet of the 3rd air flue (171) adjacent to second welding position (4b) of exhaust fume collecting hood (3), the 3rd air flue (171) It is provided with backward inlet suction port (172) at air inlet.

7. precision welding according to claim 1 with bonding composite fixture structure it is characterised in that：Described upper compact heap (7) location structure on includes multiple suckers (18) being arranged on compact heap (7) inside, and sucker (18) manifests compact heap (7) lower surface.

8. precision welding according to claim 7 with bonding composite fixture structure it is characterised in that：Described upper compact heap (7) inside is provided with two auxiliary clamp cylinders (6f), before the piston rod of auxiliary clamp cylinder (6f) stretches out compact heap (7) End face, and the piston rod in auxiliary clamp cylinder (6f) is fixed with auxiliary clamp block (19), the rear shifting energy of auxiliary clamp block (19) Press to the front edge of face glass assembly (10), the top of support (1) is fixed with two locating piece cylinders (6g), locating piece cylinder (6g) locating piece (20) is fixed with piston rod, the reach of locating piece (20) can be to ornamental strip in face glass assembly (10) (101) locating slot (102) on is positioned.

9. precision welding according to claim 7 with bonding composite fixture structure it is characterised in that：Described upper compact heap (7) liner (71) that non-metallic elastic material is made is fixed with lower surface, liner (71) has and appears for sucker (18) Perforation out.

10. precision welding according to claim 1 with bonding composite fixture structure it is characterised in that：Described upper compression Block (7) constrains in support (1) above energy sliding up and down, the cylinder body hinge of described main compression cylinder (6b) by compact heap guide rail (72) It is connected on the bottom of support (1), the piston rod of main compression cylinder (6b) is then hinged on the back side of compact heap (7).