A kind of box housing automatic welding platform
Technical field
The utility model relates to a kind of space song seam automatic welding platform, the especially automatic welding platform of round rectangle housing.
Background technology
Vacuum circuit breaker have volume little, lightweight, be applicable to frequent operation, advantage that arc extinguishing need not overhaul, apply comparatively universal in power distribution network.The cuboid box of the housing of vacuum circuit breaker to be cross section be round rectangle, rectangular slab bending and be stamped into housing side plate and upper and lower covers is respectively adopted when welding, then by after soldered for spot welds connecing, butt welded seam welds again, and at present, most medium-sized and small enterprises generally adopt the welding of vacuum circuit breaker housing and manually carry out hand weldering, operation is many, efficiency is low, and quality conformance is poor, and examination and test of products cost is high.Treat that weld seam lays respectively at the round rectangle weld seam of two planes and the straight bead being connected two weld seams due to vacuum circuit breaker housing, on market, existing dislocation welding machine can not meet the demands.Although the welding robot of intelligence can realize automatic welding, expensive, the unable equipment of general medium-sized and small enterprises.The patent No. be 201120469034.7 Chinese patent disclose a kind of Novel shell welding device, it is mainly used in the welding of circumferential weld, and this welding equipment is simple, and control mode is simple, automatically can complete welding; But to the linear pattern of tank surface, it can not treat that weld seam welds, and electric machine main shaft runs through casing, as the support of casing, the impact of the axiality welding quality of main shaft is comparatively large, easily causes incomplete welding;
The patent No. be 201320524551.9 Chinese patent disclose a kind of compressor housing bonding machine; its feature is compressor housing cylindrical directly as welding track basis; the compressor housing of Multiple Type can be adapted to; without the need to arranging profiling oval plate or cam set in addition; the motion of welding gun adopts spring and moving guiding mechanism to complete; the distance of welding gun and compressor housing weld seam is ensured by gag lever post and limited roller, and can complete many welding while welding gun.Weak point is that its welding track is confined to ellipse or circle, treats that weld seam or straight line treat that weld seam just cannot weld for vacuum circuit breaker housing by circular arc and rectilinear(-al).
The patent No. be 201110461685.6 Chinese patent disclose a kind of oil separator case welding machine special for circular seam of hydro, the clamping device of this bonding machine is made up of cylinder and clamping plate, and by cylinder push-tight, be characterized in saving a spot welding, but the workpiece that two choristas are combined into a part can only be clamped at most, and such clamp precision is lower, in the process that workpiece rotates, axiality is difficult to ensure, the welding quality that also can affect and uniformity thereof; When welding with this device, it can only weld the annular weld bead vertically placed, and treats that weld seam cannot weld for the straight line of surface of shell or oblique line and other non-annularities.
Disclosed in above-mentioned documents, welder is all only applicable to annular weld bead, inapplicable and this rectangle or round rectangle weld seam, and for box workpiece, side plate is made in this first bending, and stamp out upper and lower covers respectively, and then the cooked mode being welded into casing has certain generality, so need a kind of simple, lower-cost automatic soldering device of structure that can weld the box housing comprising vacuum circuit breaker housing at present.
Utility model content
For the deficiencies in the prior art, the technical problem that the utility model quasi-solution is determined is, provides a kind of box housing automatic welding platform that can weld vacuum circuit breaker housing.This platform can not only realize by circular arc and Straight Combination, vacuum circuit breaker housing treats that weld seam welds, also can realize treating that weld seam welds to the straight line on vacuum circuit breaker housing, can also treat that weld seam welds to other housing outer surface any regular spaces;
Belonging to the utility model solves, the technical scheme of problem is to provide a kind of box housing automatic welding platform, comprise workpiece rotation platform, work piece holder group, described work piece holder group is for being coaxially fixed on workpiece rotation platform by workpiece, it is characterized in that described automatic welding platform also comprises gun rack motion platform, described gun rack motion platform comprise rotating mechanism, welding gun holding frame, as the front and back feed mechanism of linear module and bottom and top feed mechanism;
Described rotating mechanism has rotating driving device and the output revolving shaft assembly stretched out straight up, described front and back feed mechanism comprises front and back feed drive unit, front and back feeding gripper shoe, front and back feeding guide rail, front and back feeding slide, described front and back feed mechanism is arranged on output revolving shaft assembly top by front and back feeding gripper shoe level
Bottom and top feed mechanism comprises bottom and top feed drive unit, bottom and top feed gripper shoe, bottom and top feed guide rail, bottom and top feed slide, described bottom and top feed mechanism is vertically arranged on front and back feeding slide by bottom and top feed gripper shoe, and bottom and top feed slide is provided with the welding gun holding frame stretching to workpiece; Described welding gun holding frame is for installing welding gun and weld joint tracking mechanism, and welding gun and the weld joint tracking mechanism installation site on welding gun holding frame can be finely tuned;
The described front and back feeding guide rail in the past laggard close workpiece side edge of gripper shoe of giving extends to away from workpiece side edge, the front and back feeding scope of activities of described front and back feeding slide is for inwardly at least can all move to above front and back feeding gripper shoe to welding gun near workpiece side edge, and the length of the installation site of described bottom and top feed mechanism on front and back feeding slide and weld holder and installation site can make that welding gun head is in the past laggard to be stretched out to gripper shoe and regain above workpiece side edge.
The length of described front and back feeding slide in the direction of feed of front and back is about the 1.2-1.8 of described bottom and top feed gripper shoe width doubly, and preferred 1.4-1.6 doubly; The length of described front and back feeding guide rail is about the 1.8-2.4 of described front and back feeding slide length in the direction of feed of front and back doubly, and preferred 1.9-2.2 doubly.
Preferred front and back feeding guide rail is two, lays respectively at the output shaft end both sides of output shaft assembly, and the installation site of described bottom and top feed mechanism on front and back feeding slide is also between two front and back feeding guide rail.
Preferably described welding gun holding frame has two, and be arranged on bottom and top feed slide and front and back feeding slide respectively, the installation site of described two welding gun holding frames can guarantee that the rifle point of its two welding guns installed is positioned on same plumb line.
The rotating range of described rotating mechanism 21 is each 90 ° of the plane both sides to being formed with output revolving shaft arrangement axis and workpiece rotation platform axis.
Described box housing automatic welding platform, it is characterized in that also comprising sliding bottom mechanism, rotating mechanism 21 is arranged in the sliding bottom mechanism as linear module, described sliding bottom mechanism comprises base track, sliding bottom and base drive unit, and base track bearing of trend is towards trade union college platform.
Preferred base track is two parallel orbits, and sliding bottom is positioned at the top in the middle of two tracks.
Described box housing automatic welding platform, also comprises welding gun 3 and seam tracking system, and described welding gun and seam tracking system are arranged on welding gun holding frame by three-dimensional vernier device.Described seam tracking system comprises laser pen and sensor.
The box housing automatic welding platform that the utility model provides can realize treating weld seam to the round rectangle closed loop on vacuum circuit breaker housing and vertically treating that weld seam welds.Compared with existing case weld technology, this jig can not only realize treating that weld seam welds to the simple rule of housing outer surface, also can realize by numerical control device control gun rack drive driving arrangement on platform to the complexity on housing can write out space curve equation treat that weld seam welds.Due to the box housing being representative with vacuum circuit breaker housing, its upper and lower covers treats that weld seam mostly is rectangle or round rectangle, the Distance geometry angle of position to be welded and welding gun all can change at any time when rotated, welding gun can be driven to swing within the specific limits by the rotating mechanism of gun rack motion platform in the utility model, welding gun can be driven close to or away from workpiece by front and back feed mechanism, thus can treat that weld seam welds to the round rectangle closed loop rotated under the control of numerical control device, in this case, the maximum radius of turn of welding work pieces and the difference of minimum radius of turn be substantially equivalent to welding gun march forward to time in the past after the feeding platform ultimate range of stretching out near workpiece side, go for cross section close to foursquare box housing.And when have employed sliding bottom mechanism in gun rack motion platform, the displacement scope of welding gun opposite piece rotation platform axis is larger, can the appearance and size scope of welding work pieces larger, especially can weld the box workpiece that cross-sectional aspect ratio is larger, the scope of application is wider.The box housing automatic welding platform that the utility model provides, by comparatively simple and mechanical structural design, achieve the welding comprising the box case lid closed hoop weld seam of vacuum circuit breaker housing only adopting welding robot just can complete at present, reduce equipment cost, improve production efficiency and quality, be conducive to the raising of the said goods quality.
Accompanying drawing explanation
Fig. 1 is the perspective view of embodiment of the present utility model;
In the drawings, 1. workpiece rotation platform, 2. gun rack motion platform, 21. rotating mechanisms, feed mechanism before and after 22., 23. bottom and top feed mechanisms, 24. welding gun holding frames, 210. rotating driving device, 211. output revolving shaft assemblies, feed drive unit before and after 220., feeding gripper shoe before and after 221., feeding guide rail before and after 222., feeding slide before and after 223., 230. bottom and top feed drive units, 231. bottom and top feed gripper shoes, 232. bottom and top feed guide rails, 233. bottom and top feed slides, 3. welding gun, 4. housing, 43. upper covers, 42. intermediate layers, 41. lower covers, weld seam is treated on 44., treat weld seam 45. times, 46 vertically treat weld seam, treat weld seam and the intersection point vertically treating weld seam for 47. times, weld seam and the intersection point vertically treating weld seam is treated on 48..
Detailed description of the invention
The utility model is described in detail below in conjunction with embodiment and accompanying drawing.
The box housing automatic welding platform that the utility model provides, comprise workpiece rotation platform 1, work piece holder group, gun rack motion platform 2, described gun rack motion platform 2 comprise rotating mechanism 21, welding gun holding frame 24, as the front and back feed mechanism 22 of linear module and bottom and top feed mechanism 23;
Described rotating mechanism 21 has rotating driving device 210 and the output revolving shaft assembly 211 stretched out straight up, described front and back feed mechanism 22 comprises front and back feed drive unit 220, front and back feeding gripper shoe 221, front and back feeding guide rail 222, front and back feeding slide 223, described front and back feed mechanism is arranged on output revolving shaft assembly top by front and back feeding gripper shoe 221 level
Bottom and top feed mechanism 23 comprises bottom and top feed drive unit 230, bottom and top feed gripper shoe 231, bottom and top feed guide rail 232, bottom and top feed slide 233, described bottom and top feed mechanism is vertically arranged on front and back feeding slide by bottom and top feed gripper shoe, and bottom and top feed slide is provided with the welding gun holding frame stretching to workpiece; Described welding gun holding frame is for installing welding gun and weld joint tracking mechanism, and welding gun and the weld joint tracking mechanism installation site on welding gun holding frame can be finely tuned.
Preferably described welding gun holding frame 24 has two, and be arranged on bottom and top feed slide and front and back feeding slide respectively, the installation site of described two welding gun holding frames can guarantee that the rifle point of its two welding guns installed is positioned on same plumb line.
The described front and back feeding guide rail in the past laggard close workpiece side edge of gripper shoe of giving extends to away from workpiece side edge, the front and back feeding scope of activities of described front and back feeding slide is for inwardly can all move to above front and back feeding gripper shoe to welding gun near workpiece side edge, and the length of the installation site of described bottom and top feed mechanism on front and back feeding slide and weld holder and installation site can make that welding gun head is in the past laggard to be stretched out to gripper shoe and regain above workpiece side edge.By changing the welding gun holding frame of different size, different maximum outreach can be obtained.
The length of described front and back feeding slide in the direction of feed of front and back is 1.5 times of described bottom and top feed gripper shoe width; Described front and back feeding guide rail length is about described front and back feeding slide 2 times of length in the direction of feed of front and back.
The rotating range of described rotating mechanism 21 is each 90 ° of the plane both sides to being formed with output revolving shaft arrangement axis and workpiece rotation platform axis.
Preferred front and back feeding guide rail is two, lays respectively at the output shaft end both sides of output shaft assembly, and the installation site of described bottom and top feed mechanism on front and back feeding slide is also between two front and back feeding guide rail.
In the present embodiment, described automatic welding jig also comprises welding gun 3 and seam tracking system, and described welding gun and seam tracking system are arranged on welding gun holding frame by three-dimensional vernier device.Described seam tracking system comprises laser pen and sensor.
In the present embodiment, be arranged on by rotating mechanism 21 as in the sliding bottom mechanism of linear module, described sliding bottom mechanism comprises base track, sliding bottom and base drive unit, and base track bearing of trend is towards trade union college platform.
Preferred base track is two parallel orbits, and sliding bottom is positioned at the top in the middle of two tracks.
In the present embodiment, housing 4 to be welded is the vacuum circuit breaker housing of ZW20-12 series (annular treats the long 451.5mm of weld seam, wide 434mm, knuckle radius 27.5mm; Vertically treat weld seam 421mm), housing 4 combines spot welding by upper cover 43, intermediate layer 42, lower cover 41; Upper cover 43 engages with intermediate layer 42 to be formed and treats that weld seam 44, intermediate layer 42 engage to form down with lower cover 41 and treat weld seam 45, intermediate layer 42 is closed formed one connect and upper and lowerly treat weld seam and perpendicular vertically treat weld seam 46; Wherein, upper and lowerly treat that weld shape, length are identical, be round rectangle closed loop weld seam.
The utility model is as follows for operation principle when welding the vacuum circuit breaker housing of ZW20-12 series:
1) the vacuum circuit breaker housing putting the handstand welded is transported on described workpiece rotation platform 1, makes housing lower cover 43 upward, and be located clamping by work piece holder group; The housing of clamping is coaxial with workpiece rotation platform;
2) for only have 1 be arranged on bottom and top feed slide stretch to the welding gun holding frame of workpiece time, welding operation step finely tunes the position of welding gun 3 as follows, make the luminous point of the laser pen of seam tracking system with under treat weld seam and vertically treat that the intersection point 47 of weld seam overlaps, with case weld arcing point place, the initial attitude of welding gun rifle point is for treat that weld seam keeps vertical welding attitude;
Welding route for first under treat weld seam and vertically treat weld seam intersection point be soldered down and treat weld seam, now welding gun rifle point get back to original under treat weld seam with vertically treat weld seam intersection point, upwards to vertically treat weld seam weld until arrive vertically treat weld seam with on treat weld seam intersection point 48, be next soldered and treat weld seam 45; In welding process, that comes that implementation space song stitches by the rotary motion of workpiece, the front and back feed motion of welding gun 3 and the synthesis that bottom and top feed moves welds, and the curve movement equation of the rifle point of described welding gun can be calculated by existing method and be controlled each driver part of gun rack motion platform 2 by numerical control device;
3) when welding gun holding frame has two and lay respectively at be arranged on bottom and top feed slide and front and back feeding slide time, described in be arranged on front and back feeding slide welding gun holding frame be specifically designed to down the welding treating weld seam.
When rotating mechanism 21 is arranged in the sliding bottom mechanism as linear module, welding gun can be driven close to or away from workpiece rotation platform by driving sliding bottom to move, thus the larger box housing of length-width ratio can be welded.