A kind of automatic welding machine of rocking chair brandreth
Technical field
The invention belongs to field of mechanical technique, relate to a kind of automatic welding machine, particularly a kind of automatic welding machine of rocking chair brandreth.
Background technology
Rocking chair is the one of leisure chaise longue, is one of furniture commonly used in the life of existing furniture, and collection design and function, technique and material, value and practical high unity, current furniture market is full of the furniture item of attraction and competitiveness.
In the making and process of rocking chair, usually can need to use brandreth, rocking chair be played to the effect of support.In existing rocking chair manufacturing process, a kind of rocking chair brandreth is had to be made up of two steel bars be parallel to each other and two mount pads be parallel to each other, the corresponding one end of two steel bars is all fixed therein on a mount pad, other one end of two steel bars is all fixed on another one mount pad, and general employing is welded and fixed, form a rectangle, not only structure is simple, and fixed form is stablized.
But in the prior art, people normally adopt the mode of manual welding to weld steel bar and mount pad, and not only welding position is inaccurate, and quality is unreliable, and efficiency is low, and labour intensity is large.So, for those skilled in the art, need to develop a kind of bonding machine that can carry out automatic welding to steel bar and mount pad, to improve welding precision, reduce the labour intensity of workman, improve the welding efficiency of product simultaneously.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose a kind of automatic welding machine of rocking chair brandreth, this automatic welding machine has the advantages that to carry out automatic welding to rocking chair brandreth.
Object of the present invention realizes by following technical proposal: a kind of automatic welding machine of rocking chair brandreth, described rocking chair brandreth comprises the steel bar one and steel bar two and the mount pad one be parallel to each other and mount pad two that are parallel to each other, described steel bar one, steel bar two, mount pad one and mount pad two surround a rectangle, this automatic welding machine comprises frame, described frame has the workbench of horizontal positioned, it is characterized in that, described workbench is vertically fixed with column, described column is provided with can along the elevator of column oscilaltion, the driving mechanism one that described elevator and can order about its oscilaltion is connected, the two ends of described elevator are fixed with installing plate one and installing plate two respectively, described installing plate one is provided with the slide block one and slide block two that can move forward and backward along installing plate one, described slide block one is fixed with the mounting rod one vertically arranged, the end of described mounting rod one is hinged with the welding gun one that can weld one end of steel bar one or steel bar two, described slide block two is fixed with the mounting rod two paralleled with mounting rod one, the end of described mounting rod two is hinged with the welding gun two that can weld one end of steel bar one or steel bar two, described installing plate two is provided with the slide block three and slide block four that can move forward and backward along installing plate two, described slide block three is fixed with the mounting rod three paralleled with mounting rod one, the end of described mounting rod three is hinged with the welding gun three that can weld the other end of steel bar one or steel bar two, described slide block four is fixed with the mounting rod four paralleled with mounting rod one, the end of described mounting rod four is hinged with the welding gun four that can weld the other end of steel bar one or steel bar two, described slide block one, slide block two, slide block three and slide block four and can order about its driving mechanism two seesawed and be connected, described frame is also fixed with respectively with welding gun one, welding gun two, the electric welding machine one that welding gun three is connected with welding gun four, electric welding machine two, electric welding machine three and electric welding machine four, described workbench is also provided with can by described steel bar one, steel bar two, mount pad one and the securing positioner of mount pad two, described positioner comprises the locating piece one and locating piece two that can steel bar one and steel bar two circumference be located respectively, described locating piece one and locating piece two be arranged in parallel, and described locating piece one offers the location groove one can installing steel bar one, described locating piece two offers the location groove two can installing steel bar two, described positioner also comprises the positioning strip one that steel bar one and steel bar two axial location can be lived and positioning strip two, described positioning strip one and positioning strip two are separately fixed at the both sides of locating piece one and locating piece two, described positioning strip one be arranged in parallel with positioning strip two, described positioning strip one and one end of positioning strip two are all fixed with bolt, described mount pad one is between one end of steel bar one and steel bar two and positioning strip one, and one end of mount pad one is resisted against on the bolt of positioning strip one one end, described mount pad two is between the other end of steel bar one and steel bar two and positioning strip two, and one end of mount pad two is resisted against on the bolt of positioning strip two one end.
The automatic welding machine of this rocking chair brandreth, first, is fixed on workbench by positioner by steel bar one, steel bar two, mount pad one and mount pad two; Then, by driving mechanism two, slide block one, slide block two, slide block three and slide block four are moved horizontally, thus drive mounting rod one, mounting rod two, mounting rod three and the mounting rod four corresponded to move horizontally respectively, make welding gun one, welding gun two, welding gun three and the welding gun four be separately fixed on mounting rod one, mounting rod two, mounting rod three and mounting rod four aim at the two ends of steel bar one; Secondly, elevator is made to drive mounting rod one, mounting rod two, mounting rod three and mounting rod four oscilaltion respectively by driving mechanism one again, make to be positioned at one end that the welding gun one of mounting rod one and mounting rod two end and welding gun two can aim at steel bar one, be positioned at the other end that the welding gun three of mounting rod three and mounting rod four end and welding gun four can aim at steel bar one; Then, open electric welding machine one, electric welding machine two, electric welding machine three and electric welding machine four, steel bar one is welded, realize steel bar one and the automatic welding between mount pad one and mount pad two; Finally, the position of welding gun one, welding gun two, welding gun three and welding gun four is regulated by driving mechanism one and driving mechanism two, welding gun one and welding gun two is made to aim at one end of steel bar two, the other end of steel bar two aimed at by welding gun three and welding gun four, realize steel bar two and the automatic welding between mount pad one and mount pad two, complete the automatic welding of rocking chair brandreth.
In the automatic welding machine of above-mentioned rocking chair brandreth, described driving mechanism one comprises cylinder one, and the cylinder body of described cylinder one is fixed in frame, and straight up, and the end winding support of piston rod is on above-mentioned elevator for the piston rod of described cylinder one.By cylinder once piston rod oscilaltion can drive elevator oscilaltion.
In the automatic welding machine of above-mentioned rocking chair brandreth, described driving mechanism two comprises cylinder two, the cylinder body of described cylinder two is fixed in frame, the piston rod of described cylinder two is horizontally disposed with, and the end winding support of piston rod has connecting plate, another plate face of described connecting plate is all connected with slide block three with above-mentioned slide block one by guide pillar, being connected with between described slide block one and slide block two can the adjusting bolt one of spacing between adjusting slider one and slide block two, being connected with between described slide block three and slide block four can the adjusting bolt two of spacing between adjusting slider three and slide block four.Moved forward and backward by the movable connecting plate that drives of the piston rod of cylinder two, thus utilize guide pillar band movable slider two and slide block four to move forward and backward, be with movable slider one and slide block three to move forward and backward simultaneously.Can spacing between adjusting slider one and slide block two by adjusting bolt one, can spacing between adjusting slider three and slide block four by adjusting bolt two.
In the automatic welding machine of above-mentioned rocking chair brandreth, described installing plate one and installing plate two all offer the dovetail groove paralleled with the piston rod of cylinder two, described slide block one has the connecting portion one corresponding with dovetail groove, described slide block two has the connecting portion two corresponding with dovetail groove, described connecting portion one and connecting portion two are all arranged in the dovetail groove on installing plate one, described slide block three has the connecting portion three corresponding with dovetail groove, described slide block four has the connecting portion four corresponding with dovetail groove, described connecting portion three and connecting portion four are all arranged in the dovetail groove on installing plate two.The connecting portion one of slide block one and the connecting portion two of slide block two are matched with the dovetail groove on installing plate one, just can make slide block one and slide block two Stable sliding on installing plate one; The connecting portion three of slide block three and the connecting portion four of slide block four are matched with the dovetail groove on installing plate two, just can make slide block three and slide block four Stable sliding on installing plate two.
In the automatic welding machine of above-mentioned rocking chair brandreth, the end of described mounting rod one, mounting rod two, mounting rod three and mounting rod four is all fixed with hinged block, the connecting portion that described hinged block comprises body, be connected mutually with body and the installation portion be hinged with body, described installation portion offers the installing hole for installing welding gun one, welding gun two, welding gun three or welding gun four.Connecting portion can be used for the end that hinged block is separately fixed at mounting rod one, mounting rod two, mounting rod three or mounting rod four, installing hole can be used for installing welding gun one, welding gun two, welding gun three or welding gun four, because installation portion is hinged on body, the flame angle of welding gun one, welding gun two, welding gun three or welding gun four therefore can be regulated.
In the automatic welding machine of above-mentioned rocking chair brandreth, on described column along its length on offer T-slot, above-mentioned elevator has the guide part matched with described T-slot, described guide part is arranged in described T-slot.Guide part can slide up and down in the T-slot of column, prevents elevator from departing from column.
In the automatic welding machine of above-mentioned rocking chair brandreth, between described positioning strip one and workbench, be fixed with backing plate one, be fixed with backing plate two between described positioning strip two and workbench, and the height of backing plate one and backing plate two be equal.Backing plate one can by padded for positioning strip one, and backing plate two by padded for positioning strip two, thus can have enough height at steel bar one with between steel bar two and workbench, stationary positioned block one and locating piece two.
In the automatic welding machine of above-mentioned rocking chair brandreth, described steel bar one and the cross section of steel bar two all rectangular, described location groove one with location groove two cross section all in the rectangle corresponding with the cross section of steel bar one or steel bar two.Location groove one is corresponding with steel bar one and steel bar two respectively with location groove two, because both are all rectangular shapes, thus steel bar one and steel bar two circumference can be positioned on locating piece one and locating piece two.
In the automatic welding machine of above-mentioned rocking chair brandreth, described frame is also fixed with the fixed bar paralleled with column, the cylinder body of cylinder two is slidably arranged on fixed bar.Concrete, the cylinder body of cylinder two is fixed with slip cap, and slip cap offers sliding eye, can be slidably located on fixed bar by cylinder two by this sliding eye, cylinder two just can along with fixed bar oscilaltion.
In the automatic welding machine of above-mentioned rocking chair brandreth, described frame is also fixed with a PLC, above-mentioned cylinder one is connected with PLC with circuit two respectively by circuit one with cylinder two.The motion of control cylinder one and cylinder two can be distinguished by this PLC.
Compared with prior art, the automatic welding machine of this rocking chair brandreth has the following advantages:
1, the present invention can the locus of rapid adjustment welding gun one, welding gun two, welding gun three and welding gun four by driving mechanism one and driving mechanism two, make welding gun one, welding gun two, welding gun three and welding gun four can aim at the weld of rocking chair brandreth respectively, just can the two ends of steel bar one or steel bar two be welded on mount pad one and mount pad two respectively, steel bar one can be realized or steel bar 2 two end faces weld simultaneously, not only welding position is accurate, and welding quality is high.
2, the present invention by arranging locating piece one and locating piece two on workbench, the circumference location of steel bar one and steel bar two can be realized, by arranging positioning strip one and positioning strip two on base, the axial location that steel bar one and steel bar two coordinate mount pad one and mount pad two can be realized, not only structure is simple, and good positioning effect.
3, the present invention can realize mechanical automation welding, and simple to operate, efficiency is high, greatly can reduce the labour intensity of workman.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 of the present inventionly faces structural representation;
Fig. 3 is side-looking structural representation of the present invention;
Fig. 4 is plan structure schematic diagram of the present invention;
Fig. 5 is the structural representation of positioner in the present invention;
Fig. 6 is the structural representation of rocking chair brandreth in the present invention.
In figure, 1, frame; 2, workbench; 3, column; 4, cylinder one; 5, elevator; 6, cylinder two; 7, connecting plate; 8, guide pillar; 9, fixed bar; 10, installing plate one; 11, installing plate two; 12, slide block one; 13, mounting rod one; 14, slide block two; 15, mounting rod two; 16, slide block three; 17, mounting rod three; 18, slide block four; 19, mounting rod four; 20, hinged block; 21, electric welding machine one; 22, electric welding machine two; 23, electric welding machine three; 24, electric welding machine four; 25, positioner; 251, locating piece one; 252, locating piece two; 253, positioning strip one; 254, positioning strip two; 255, bolt; 256, backing plate one; 257, backing plate two; 26, rocking chair brandreth; 261, steel bar one; 262, steel bar two; 263, mount pad one; 264, mount pad two.
Detailed description of the invention
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As Fig. 1, 2, shown in 3 and 4, a kind of automatic welding machine of rocking chair brandreth, comprise frame 1, frame 1 has the workbench 2 of horizontal positioned, workbench 2 is vertically fixed with column 3, column 3 is provided with can along the elevator 5 of column 3 oscilaltion, the two ends of elevator 5 are fixed with installing plate 1 and installing plate 2 11 respectively, installing plate 1 is provided with the slide block 1 and slide block 2 14 that can move forward and backward along installing plate 1, slide block 1 is fixed with the mounting rod 1 vertically arranged, the end of mounting rod 1 is hinged with the welding gun one that can weld one end of steel bar 1 or steel bar 2 262, slide block 2 14 is fixed with the mounting rod 2 15 paralleled with mounting rod 1, the end of mounting rod 2 15 is hinged with the welding gun two that can weld one end of steel bar 1 or steel bar 2 262, installing plate 2 11 is provided with the slide block 3 16 and slide block 4 18 that can move forward and backward along installing plate 2 11, slide block 3 16 is fixed with the mounting rod 3 17 paralleled with mounting rod 1, the end of mounting rod 3 17 is hinged with the welding gun three that can weld the other end of steel bar 1 or steel bar 2 262, slide block 4 18 is fixed with the mounting rod 4 19 paralleled with mounting rod 1, the end of mounting rod 4 19 is hinged with the welding gun four that can weld the other end of steel bar 1 or steel bar 2 262, frame 1 is also fixed with respectively with welding gun one, welding gun two, the electric welding machine 1 that welding gun three is connected with welding gun four, electric welding machine 2 22, electric welding machine 3 23 and electric welding machine 4 24.
As shown in Figure 2, the driving mechanism one that elevator 5 and can order about its oscilaltion is connected, this driving mechanism one comprises cylinder 1, the cylinder body of cylinder 1 is fixed in frame 1, the piston rod of cylinder 1 straight up, and the end winding support of piston rod is on elevator 5, elevator 5 oscilaltion just can be driven by the piston rod oscilaltion of cylinder 1.
As shown in Figure 3, slide block 1, slide block 2 14, slide block 3 16 and slide block 4 18 and can order about its driving mechanism two seesawed and be connected, this driving mechanism two comprises cylinder 26, the cylinder body of cylinder 26 is fixed in frame 1, the piston rod of cylinder 26 is horizontally disposed with, and the end winding support of piston rod has connecting plate 7, another plate face of connecting plate 7 is connected mutually by guide pillar 8 and slide block 2 14 and slide block 4 18, being connected with between slide block 1 and slide block 2 14 can the adjusting bolt one of spacing between adjusting slider 1 and slide block 2 14, being connected with between slide block 3 16 and slide block 4 18 can the adjusting bolt two of spacing between adjusting slider 3 16 and slide block 4 18.Moved forward and backward by the movable connecting plate 7 that drives of the piston rod of cylinder 26, thus utilize guide pillar 8 to be with movable slider 2 14 and slide block 4 18 to move forward and backward, be with movable slider 1 and slide block 3 16 to move forward and backward simultaneously.Can spacing between adjusting slider 1 and slide block 2 14 by adjusting bolt one, can spacing between adjusting slider 3 16 and slide block 4 18 by adjusting bolt two.Frame 1 is also fixed with the fixed bar 9 paralleled with column 3, the cylinder body of cylinder 26 is slidably arranged on fixed bar 9, concrete, the cylinder body of cylinder 26 is fixed with slip cap, and slip cap offers sliding eye, can be slidably located on fixed bar 9 by cylinder 26 by this sliding eye, cylinder 26 just can along with fixed bar 9 oscilaltion.
Specifically, installing plate 1 and installing plate 2 11 all offer the dovetail groove paralleled with the piston rod of cylinder 26, slide block 1 has the connecting portion one corresponding with dovetail groove, slide block 2 14 has the connecting portion two corresponding with dovetail groove, and connecting portion one and connecting portion two are all arranged in the dovetail groove on installing plate 1; Slide block 3 16 has the connecting portion three corresponding with dovetail groove, and slide block 4 18 has the connecting portion four corresponding with dovetail groove, and connecting portion three and connecting portion four are all arranged in the dovetail groove on installing plate 2 11.The connecting portion one of slide block 1 and the connecting portion two of slide block 2 14 are matched with the dovetail groove on installing plate 1, just can make slide block 1 and slide block 2 14 Stable sliding on installing plate 1; The connecting portion three of slide block 3 16 and the connecting portion four of slide block 4 18 are matched with the dovetail groove on installing plate 2 11, just can make slide block 3 16 and slide block 4 18 Stable sliding on installing plate 2 11.On column 3 along its length on offer T-slot, elevator 5 has the guide part matched with T-slot, guide part is arranged in T-slot, and guide part can slide up and down in the T-slot of column 3, prevents elevator 5 from departing from column 3.
The end of mounting rod 1, mounting rod 2 15, mounting rod 3 17 and mounting rod 4 19 is all fixed with hinged block 20, and this hinged block 20 can install welding gun one, welding gun two, welding gun three or welding gun four respectively.The connecting portion that concrete, hinged block 20 comprises body, be connected mutually with body and the installation portion be hinged with body, installation portion offers the installing hole for installation welding gun one, welding gun two, welding gun three or welding gun four.Connecting portion can be used for the end that hinged block 20 is separately fixed at mounting rod 1, mounting rod 2 15, mounting rod 3 17 or mounting rod 4 19, installing hole can be used for installing welding gun one, welding gun two, welding gun three or welding gun four, because installation portion is hinged on body, the flame angle of welding gun one, welding gun two, welding gun three or welding gun four therefore can be regulated.
Frame 1 is also fixed with a PLC, cylinder 1 is connected with this PLC by circuit one, cylinder 26 is connected with this PLC by circuit two, setting program in PLC, just can distinguish the motion of control cylinder 1 and cylinder 26, realize the position of adjustment welding gun one, welding gun two, welding gun three and welding gun four automatically.
As shown in Figure 6, this rocking chair brandreth, comprise the steel bar 1 and steel bar 2 262 and the mount pad 1 be parallel to each other and mount pad 2 264 that are parallel to each other, and steel bar 1, steel bar 2 262, mount pad 1 and mount pad 2 264 surrounds a rectangle.Concrete, the cross section of mount pad 1 and mount pad 2 264 is all L-shaped, and the cross section of steel bar 1 and steel bar 2 262 is all rectangular.
As shown in Figure 5, the automatic welding machine of this rocking chair brandreth also comprises that be arranged on can by securing for rocking chair brandreth 26 positioner 25 on workbench 2, this positioner 25 comprises the locating piece 1 and locating piece 2 252 that can steel bar 1 and steel bar 2 262 circumference be located respectively, locating piece 1 and locating piece 2 252 be arranged in parallel, and locating piece 1 offers the location groove one that can match with steel bar 1, locating piece 2 252 offers the location groove two that can match with steel bar 2 262, locate groove one and locate the cross section of groove two all in the rectangle corresponding with the cross section of steel bar 1 or steel bar 2 262, this positioner 25 also comprises the positioning strip 1 that steel bar 1 and steel bar 2 262 axial location can be lived and positioning strip 2 254, positioning strip 1 and positioning strip 2 254 are separately fixed at the both sides of locating piece 1 and locating piece 2 252, positioning strip 1 and positioning strip 2 254 be arranged in parallel, and one end of positioning strip 1 and positioning strip 2 254 is all fixed with bolt 255, mount pad 1 is between one end of steel bar 1 and steel bar 2 262 and positioning strip 1, and one end of mount pad 1 is resisted against on the bolt 255 of positioning strip 1 one end, mount pad 2 264 is between the other end of steel bar 1 and steel bar 2 262 and positioning strip 2 254, and one end of mount pad 2 264 is resisted against on the bolt 255 of positioning strip 2 254 one end.Location groove one is corresponding with steel bar 1 and steel bar 2 262 respectively with location groove two, because both are all rectangular shapes, thus steel bar 1 and steel bar 2 262 circumference can be positioned on locating piece 1 and locating piece 2 252.Backing plate 1 is fixed with between positioning strip 1 and workbench 2, backing plate 2 257 is fixed with between positioning strip 2 254 and workbench 2, and the height of backing plate 1 and backing plate 2 257 is equal, highly be 30mm, backing plate 1 can by padded for positioning strip 1, backing plate 2 257 by padded for positioning strip 2 254, thus can have enough height at steel bar 1 with between steel bar 2 262 and workbench 2, stationary positioned block 1 and locating piece 2 252.
Specifically, positioning strip 1 and positioning strip 2 254 all offer two adjustment holes one in bar shaped, and is fixed on backing plate 1 and backing plate 2 257 respectively by the mode that bolt and nut coordinates.By the relative position of adjustment positioning strip 1 on backing plate 1, the relative position of positioning strip 2 254 on backing plate 2 257, just can finely tune the spacing between positioning strip 1 and positioning strip 2 254, to make the spacing between mount pad 1 and mount pad 2 264 equal with the length of steel bar 1 or steel bar 2 262.Same, backing plate 1 and backing plate 2 257 all offer two adjustment holes two in bar shaped, and is fixed on workbench 2 respectively by the mode that bolt and nut coordinates.By the relative position of adjustment backing plate 1 on workbench 2, the relative position of backing plate 2 257 on workbench 2, just significantly can adjust the spacing between positioning strip 1 and positioning strip 2 254, to adapt to steel bar 1 and the steel bar 2 262 of different length.In this enforcement, positioning strip 1, positioning strip 2 254, locating piece 1 and locating piece 2 252 are all fixed by screws on workbench 2, and not only fixed form is simple, and easily dismantles.Based on the consideration of cost, positioning strip 1, positioning strip 2 254, locating piece 1 and locating piece 2 252 all adopt steel material to make.
This positioner 25 can adopt following steps to fix rocking chair brandreth 26, first steel bar 1 is installed in the location groove one on locating piece 1, steel bar 2 262 is installed in the location groove two on locating piece 2 252, and make, between the side of one end of steel bar 1 and steel bar 2 262 and positioning strip 1, there is gap, between the other end of steel bar 1 and steel bar 2 262 and the side of positioning strip 2 254, there is gap; Then, mount pad 1 is inserted in the gap formed by steel bar 1 and one end of steel bar 2 262 and the side of positioning strip 1, and make one end of mount pad 1 be resisted against on the bolt 255 of positioning strip 1 one end, mount pad 2 264 is inserted in the gap formed by steel bar 1 and the other end of steel bar 2 262 and the side of positioning strip 2 254, and one end of mount pad 2 264 is resisted against on the bolt 255 of positioning strip 2 254 one end, so just achieve fixing whole rocking chair brandreth 26.
The automatic welding machine of this rocking chair brandreth, first, is fixed on workbench 2 by positioner 25 by steel bar 1, steel bar 2 262, mount pad 1 and mount pad 2 264; Then, by cylinder 26, slide block 1, slide block 2 14, slide block 3 16 and slide block 4 18 are moved horizontally, thus drive mounting rod 1, mounting rod 2 15, mounting rod 3 17 and the mounting rod 4 19 corresponded to move horizontally respectively, make welding gun one, welding gun two, welding gun three and the welding gun four be separately fixed on mounting rod 1, mounting rod 2 15, mounting rod 3 17 and mounting rod 4 19 aim at the two ends of steel bar 1; Secondly, elevator 5 is made to drive mounting rod 1, mounting rod 2 15, mounting rod 3 17 and mounting rod 4 19 oscilaltion respectively by cylinder 1 again, make to be positioned at one end that the welding gun one of mounting rod 1 and mounting rod 2 15 end and welding gun two can aim at steel bar 1, be positioned at the other end that the welding gun three of mounting rod 3 17 and mounting rod 4 19 end and welding gun four can aim at steel bar 1; Then, open electric welding machine 1, electric welding machine 2 22, electric welding machine 3 23 and electric welding machine 4 24, steel bar 1 is welded, realize steel bar 1 and the automatic welding between mount pad 1 and mount pad 2 264; Finally, the position of welding gun one, welding gun two, welding gun three and welding gun four is again regulated by cylinder 1 and cylinder 26, welding gun one and welding gun two is made to aim at one end of steel bar 2 262, the other end of steel bar 2 262 aimed at by welding gun three and welding gun four, realize steel bar 2 262 and the automatic welding between mount pad 1 and mount pad 2 264, complete the automatic welding of rocking chair brandreth 26.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ 1 herein, frame; 2, workbench; 3, column; 4, cylinder one; 5, elevator; 6, cylinder two; 7, connecting plate; 8, guide pillar; 9, fixed bar; 10, installing plate one; 11, installing plate two; 12, slide block one; 13, mounting rod one; 14, slide block two; 15, mounting rod two; 16, slide block three; 17, mounting rod three; 18, slide block four; 19, mounting rod four; 20, hinged block; 21, electric welding machine one; 22, electric welding machine two; 23, electric welding machine three; 24, electric welding machine four; 25, positioner; 251, locating piece one; 252, locating piece two; 253, positioning strip one; 254, positioning strip two; 255, bolt; 256, backing plate one; 257, backing plate two; 26, rocking chair brandreth; 261, steel bar one; 262, steel bar two; 263, mount pad one; 264, the second-class term of mount pad, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.