A kind of process equipment of lift circuit plate
Technical field
The invention belongs to electric mechanical technical field, be related to a kind of process equipment, particularly a kind of lift circuit plate plus
Construction equipment.
Background technology
Circuit board is important electronic component in lift facility, and the substrate of itself is by insulated heat, by not flexible
Material made by, and on the surface of substrate it can be seen that narrow and small line material be that Copper Foil is referred to as wire, on substrate weld
Various electronic components realize connection by the circuit.
Generally require that electronic component first is carried out into plug-in unit on the process line of circuit board, weld, cut some operations such as pin.
At present, element is plugged on substrate, and is welded and excessive in needs to being generally required in the leg treatment after welding
Personnel are operated, and so as to cause whole the flow work inefficiency, can expend excessive human and material resources etc. no again
Foot.Meanwhile, delivery track is all often to be fixed dead in practical work process, it is impossible to free regulation is enough carried out, so as to have
Beneficial to circuit board series of processes.
Due to there is above mentioned problem, so, for those skilled in the art, needing to be developed one kind can be more
It is convenient, accurate that plug-in unit, spot welding are carried out to the element on circuit board and pin is cut, and positioning can also be adjusted to delivery track
Process equipment.
The content of the invention
The purpose of the present invention is directed to existing technology and there is above mentioned problem, it is proposed that a kind of processing of lift circuit plate sets
Standby, the process equipment of this lift circuit plate more convenient, accurately can carry out automation plug-in unit, point to the element on circuit board
The characteristics of welding and cut pin, and delivery track can also be supported and positioning is adjusted.
The purpose of the present invention can be realized by following technical proposal:A kind of process equipment of lift circuit plate, including work
Make platform, two delivery tracks are provided with described workbench, a level is offered respectively on two described delivery tracks
The groove of setting, and two grooves are oppositely arranged, it is characterised in that it is provided with energy between described workbench and two delivery tracks
Two regulating positioning devices of delivery track height are enough adjusted, described regulating positioning device includes connector, screw rod three, nut
Three are separately fixed at the two ends of connector with regulation spring, two described delivery tracks, and the lower end of described screw rod three is fixed
On the table, the upper end of screw rod three is free end, and described regulation spring is set on screw rod three, the described screw thread of nut three
It is connected on screw rod three, and regulation spring is between workbench and nut three, and a perforating is offered on described connector,
Described screw rod three passes through perforating, and connector to be between regulation spring and nut three;Described connector includes connection
Transverse slat, connection riser one and connection riser two, above-mentioned perforating are opened on connection transverse slat, and described connection riser one is fixed
In one end of connection transverse slat, described connection riser two is fixed on connection transverse slat, and connection riser two is in perforating and company
Connect between riser one, the other end of described connection transverse slat is fixed with a mounting rod, and some matching somebody with somebody is arranged with described mounting rod
Pouring weight;Be sequentially provided with described workbench can by circuit element be automatically inserted into plug-in mechanism to circuit board, can be by
Spot-welding mechanism on pin automatic welding to the circuit board of circuit element and the pin for stretching out circuit board lower face can be carried out
The pinrshape structure of surface trimming.
The process equipment of this lift circuit plate, its operation principle is:1st, the two ends of circuit board can respectively from two conveyor tracks
Pass through in the groove in road, so as to the position of stabilizing circuit plate;2nd, by plug-in mechanism, can efficiently, it is accurate by element
Pin is plugged in the pin bores of circuit board;3rd, by spot-welding mechanism, efficiently, accurately component pin and circuit board can be entered
Row automatic welding;4th, by pinrshape structure, can efficiently, easily realize to carrying out automation pruning at circuit board leg;5、
Delivery track regulation be arranged on connector, connector be in regulation spring and nut three between, by screw rod three so as to
Realization plays a part of support to delivery track, meanwhile, when the nut three on screw rod three is tightened, connector is entered regulation spring
Row extruding, so that track reduction, when the nut three on Unscrew three, regulation spring can return to original state, so that
Track is raised, and realization plays a part of positioning to delivery track.
In the process equipment of above-mentioned lift circuit plate, described plug-in mechanism includes grafting cylinder and longitudinal cylinder, institute
Slided on the workbench stated and be provided with an erecting bed, erecting bed is in two the same sides of delivery track, longitudinal cylinder
Cylinder body is fixed on erecting bed, and the piston rod of longitudinal cylinder is horizontally disposed with, and the cylinder body of the grafting cylinder is fixed on longitudinal cylinder
Piston rod end, straight down, and the tailpiece of the piston rod of grafting cylinder is fixed with a material taking hand to the piston rod of grafting cylinder, described
Erecting bed and workbench between be provided with the adjustment structure one that can adjust spacing between erecting bed and delivery track.It is fixed on peace
Longitudinal cylinder on dress platform can drive material taking hand to vertically move, so as to realize carrying out plug-in unit longitudinal register, adjustment structure one
Can realize carrying out plug-in unit located lateral, and can realize that material taking hand carries out plug-in unit to circuit board by grafting cylinder.
In the process equipment of above-mentioned lift circuit plate, described adjustment structure one includes screw rod one, nut one and compression
Spring one, one end of described screw rod one is fixed therein an outside for delivery track, and described compression spring one is set in
On screw rod one, described nut one is threaded on screw rod one, and compression spring one is between delivery track and nut one,
A perforating is offered on described erecting bed, screw rod one passes through the perforating, and erecting bed is in compression spring one and nut
Between one.One end of screw rod one is fixed on the outside of a delivery track, and the other end passes the perforating on erecting bed and is arranged with
Nut one, is extruded the compression spring one between erecting bed and delivery track, by rotating nut so as to adjust peace
Spacing between dress platform and delivery track, realization carries out located lateral to plug-in unit.
In the process equipment of above-mentioned lift circuit plate, described spot-welding mechanism includes spot-welding gun, point welding cylinder and conveying
Cylinder, slides on described workbench and is provided with a welding bench, and welding bench is in two the same sides of delivery track, the conveying
The cylinder body of cylinder is fixed on welding bench, and the piston rod for conveying cylinder is horizontally disposed with, and the cylinder body of described welding cylinder is fixed on defeated
Supply gas the piston rod end of cylinder, put the piston rod of welding cylinder straight up, described spot-welding gun is hinged on the piston of a welding cylinder
Boom end, being provided between described welding bench and workbench can adjust the adjustment structure of spacing between welding bench and delivery track
Two.The conveying cylinder being fixed on welding bench can drive a welding cylinder to be vertically moved in the lower surface of circuit board, so as to realize
Longitudinal register is carried out to spot-welding gun, adjustment structure two can be realized carrying out spot-welding gun located lateral, and by a welding cylinder energy
Enough realize that spot welding is robbed to weld component pin with circuit board.
In the process equipment of above-mentioned lift circuit plate, described adjustment structure two includes screw rod two, nut two and compression
Spring two, one end of described screw rod two is fixed therein an outside for delivery track, and described compression spring two is set in
On screw rod two, described nut two is threaded on screw rod two, and compression spring two is between delivery track and nut two,
A perforating is offered on described welding bench, screw rod two passes through the perforating, and welding bench is in compression spring two and nut
Between two.One end of screw rod two is fixed on the outside of a delivery track, and the other end passes the perforating on welding bench and is arranged with
Nut two, by rotating nut, two pairs extrude in the compression spring two between welding bench and delivery track, so as to adjust
Spacing between welding bench and delivery track, realization carries out located lateral to spot-welding gun.
In the process equipment of above-mentioned lift circuit plate, the piston rod end of described point welding cylinder is fixed with hinged block,
Above-mentioned spot-welding gun is fixed on hinged block.Hinged block is prior art, and spot-welding gun is fixed on into a welding cylinder by hinged block
On, so as to the rotation of certain angle can also be realized.
In the process equipment of above-mentioned lift circuit plate, described pinrshape structure includes cutting disc and rotary electric machine, described
Rotary electric machine fix on the table, straight up, described cutting disc is arranged on output shaft to the output shaft of rotary electric machine
Upper end, cutting disc and rotary electric machine are arranged between two delivery tracks, and the height of cutting disc is less than two groove institute shapes
Into plane.Workbench between two delivery tracks is fixed with rotary electric machine, so as to drive the disk swivel below circuit board
It is dynamic, so as to efficiently realize to carrying out pruning smooth at the leg on circuit board.
In the process equipment of above-mentioned lift circuit plate, energy is additionally provided between the output shaft and cutting disc of the rotary electric machine
The lifting structure of cutting disc height is enough adjusted, described lifting structure is lift cylinder, and the cylinder body of lift cylinder is fixed on output
The end of axle, straight up, described cutting disc is fixed on the piston rod end of lift cylinder to the piston rod of lift cylinder, and
The heart axle of cutting disc overlaps with the axial line of the piston rod of lift cylinder.By the lifting air being fixed on rotary electric machine output shaft
Cylinder can drive the cutting disc to carry out the regulation of upper-lower position such that it is able to the remaining length of leg is fitted according to actual conditions
Work as pruning.
In the process equipment of above-mentioned lift circuit plate, being additionally provided with described workbench some can promote circuit board to transport
Dynamic push structure, described push structure is push cylinder, and the cylinder body of push cylinder is fixed on the table, push cylinder
Piston rod is parallel with delivery track, and the piston rod end of described push cylinder is fixed with push pedal.By being fixed on workbench
On push cylinder and its piston rod end be fixed with push pedal such that it is able to realization circuit board is entered along the groove of delivery track
Row movement.
In the process equipment of above-mentioned lift circuit plate, described push cylinder is fixed on the table by support, institute
The push pedal stated is by screw in the piston rod end for being fixed on push cylinder.Push cylinder passes through on support, so as to ensure to push
Cylinder is highly close with delivery track, and push pedal is fixed by screw consequently facilitating loading and unloading.
Compared with prior art, the process equipment of this lift circuit plate has advantages below:
1st, the longitudinal cylinder in the present invention can drive material taking hand to vertically move, so as to carry out longitudinal register to plug-in unit;And
Extruded in the compression spring one between erecting bed and delivery track by a pair of rotating nut adjust erecting bed with it is defeated
The spacing between track is sent, so as to carry out located lateral to plug-in unit, realizes carrying out plug-in unit to circuit board by material taking hand.
2nd, the conveying cylinder in the present invention can drive a welding cylinder to vertically move, so as to realize carrying out longitudinal direction to spot-welding gun
Positioning;And extruded in the compression springs two between welding bench and delivery track by rotating nut two pairs and to adjust welding
Spacing between platform and delivery track, so as to carrying out located lateral to spot-welding gun, is robbed by spot welding and realizes that spot welding is robbed element is drawn
Pin is welded with circuit board.
3rd, the present invention can drive the cutting disc below circuit board by the rotary electric machine on the workbench between delivery track
Rotate, and lift cylinder can drive the cutting disc to carry out the regulation of upper-lower position, so as to efficiently realize to the weldering on circuit board
Carry out pruning smooth at pin.
4th, when the nut three on screw rod three is tightened during the present invention passes through, connector is made to extrude regulation spring, track
Reduce;When the nut three on Unscrew three, regulation spring can return to original state, track is raised, so as to realize to conveying
Track plays a part of positioning.
5th, can be with the position of stabilizing circuit plate, and push cylinder and fixed piston in the groove that the present invention passes through delivery track
Push pedal on bar, can promote circuit board to be moved along groove.
Brief description of the drawings
Fig. 1 is dimensional structure diagram of the invention;
Fig. 2 is overlooking the structure diagram of the invention;
Fig. 3 is positive structure diagram of the invention;
Fig. 4 is right side structural representation of the invention.
In figure, 1, workbench;2nd, delivery track;3rd, groove;4th, push cylinder;5th, push pedal;6th, support;7th, erecting bed;8、
Longitudinal cylinder;9th, grafting cylinder;10th, material taking hand;11st, screw rod one;12nd, nut one;13rd, compression spring one;14th, cylinder is conveyed;
15th, welding cylinder is put;16th, spot-welding gun;17th, screw rod two;18th, nut two;19th, compression spring two;20th, rotary electric machine;21st, disk
Knife;22nd, lift cylinder;23rd, connector;23a, connection transverse slat;23b, connection riser one;23c, connection riser two;24th, screw rod
Three;25th, nut three;26th, spring is adjusted;27th, welding bench;28th, balancing weight.
Specific embodiment
The following is specific embodiment of the invention and with reference to accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
As shown in figure 1, a kind of process equipment of lift circuit plate, including workbench 1, be fixed with workbench 1 two it is defeated
Track 2 is sent, a horizontally disposed groove 3 is offered on two delivery tracks 2 respectively, and two grooves 3 are oppositely arranged.
As shown in Fig. 2 workbench 1 is provided with, and circuit element can be automatically inserted into the plug-in mechanism to circuit board.Tool
For body, plug-in mechanism includes grafting cylinder 9 and longitudinal cylinder 8, is slided on workbench 1 and is provided with an erecting bed 7, erecting bed 7
In two the same sides of delivery track 2, the cylinder body of longitudinal cylinder 8 is fixed on erecting bed 7, the piston rod water of longitudinal cylinder 8
Flat to set, the cylinder body of grafting cylinder 9 is fixed on the piston rod end of longitudinal cylinder 8, the piston rod of grafting cylinder 9 straight down,
And the tailpiece of the piston rod of grafting cylinder 9 is fixed with a material taking hand 10, being provided between erecting bed 7 and workbench 1 can adjust erecting bed 7
The adjustment structure one of spacing between delivery track 2.The longitudinal cylinder 8 being fixed on erecting bed 7 can drive material taking hand 10 to indulge
To movement, so as to realize carrying out plug-in unit longitudinal register, adjustment structure one can be realized carrying out located lateral to plug-in unit, and pass through
Grafting cylinder 9 can realize that material taking hand 10 carries out plug-in unit to circuit board.
Wherein, adjustment structure one includes screw rod 1, nut 1 and compression spring 1, and one end of screw rod 1 is fixed
An outside for delivery track 2 wherein, compression spring 1 is set on screw rod 1, and described nut 1 is threadedly coupled
On screw rod 1, and compression spring 1 is in and offers one between delivery track 2 and nut 1, on erecting bed 7 and wear
Hole, screw rod 1 passes through the perforating, and erecting bed 7 to be between compression spring 1 and nut 1.And erecting bed 7 includes
Riser and transverse slat, perforating are opened on riser, and the cylinder body of longitudinal cylinder 8 is fixed on transverse slat.One end of screw rod 1 is fixed
In the outside of a delivery track 2, the other end passes the perforating on erecting bed 7 and is arranged with nut 1, by rotating nut
Compression spring 1 between erecting bed 7 and delivery track 2 is extruded, so as to adjust erecting bed 7 and delivery track 2
Between spacing, realization located lateral is carried out to plug-in unit.
As shown in figure 3, workbench 1 be provided with can be by the mash welder on pin automatic welding to the circuit board of circuit element
Structure.Described spot-welding mechanism includes spot-welding gun 16, point welding cylinder 15 and conveying cylinder 14, is slided on described workbench 1 and set
There is a welding bench 27, welding bench 27 is in two the same sides of delivery track 2, and the cylinder body of the conveying cylinder 14 is fixed on welding
On platform 27, the piston rod for conveying cylinder 14 is horizontally disposed with, and the cylinder body of described welding cylinder 15 is fixed on the piston of conveying cylinder 14
Boom end, puts the piston rod of welding cylinder 15 straight up, and described spot-welding gun 16 is hinged on the piston rod end of a welding cylinder 15,
The adjustment structure that can adjust spacing between welding bench 27 and delivery track 2 is provided between described welding bench 27 and workbench 1
Two.The conveying cylinder 14 being fixed on welding bench 27 can drive a welding cylinder 15 to be vertically moved in the lower surface of circuit board, from
And realization carries out longitudinal register to spot-welding gun 16, adjustment structure two can be realized carrying out spot-welding gun 16 located lateral, and pass through
Point welding cylinder 15 can realize that spot welding is robbed and component pin is welded with circuit board.
Wherein, adjustment structure two includes screw rod 2 17, nut 2 18 and compression spring 2 19, and one end of screw rod 2 17 is fixed
An outside for delivery track 2 wherein, compression spring 2 19 is set on screw rod 2 17, and nut 2 18 is threaded in screw rod
On 2 17, and compression spring 2 19 is between delivery track 2 and nut 2 18, and a perforating, spiral shell are offered on welding bench 27
Bar 2 17 passes through the perforating, and welding bench 27 to be between compression spring 2 19 and nut 2 18.And welding bench 27 includes erecting
Plate and transverse slat, perforating are opened on riser, and the cylinder body for conveying cylinder 14 is fixed on transverse slat.One end of screw rod 2 17 is fixed on
The outside of one delivery track 2, the other end passes the perforating on welding bench 27 and is arranged with nut 2 18, by rotating nut two
18 pairs extrude in the compression spring 2 19 between welding bench 27 and delivery track 2, so as to adjust welding bench 27 with conveying
Spacing between track 2, realization carries out located lateral to spot-welding gun 16.The piston rod end of point welding cylinder 15 is fixed with and is hinged
Block, spot-welding gun 16 is fixed on hinged block.Hinged block is prior art, and spot-welding gun 16 is fixed on into a welding cylinder by hinged block
On 15, so as to the rotation of certain angle can also be realized.
As shown in figure 4, the pin that workbench 1 is provided with can be to stretching out circuit board lower face carry out surface trimming cut pin
Mechanism.Specifically, pinrshape structure includes cutting disc 21 and rotary electric machine 20, and rotary electric machine 20 is fixed on workbench 1, rotates
Straight up, cutting disc 21 is arranged on the upper end of output shaft to the output shaft of motor 20, and cutting disc 21 and rotary electric machine 20 are respectively provided with
Between two delivery tracks 2, and the height of cutting disc 21 is less than the plane that two grooves 3 are formed.Two delivery tracks 2 it
Between workbench 1 be fixed with rotary electric machine 20, so as to drive the cutting disc 21 below circuit board to rotate, thus efficiently realize it is right
Carry out pruning smooth at leg on circuit board.
Wherein, being additionally provided between the output shaft of rotary electric machine 20 and cutting disc 21 can adjust the lifting of the height of cutting disc 21
Structure, lifting structure is lift cylinder 22, and the cylinder body of lift cylinder 22 is fixed on the end of output shaft, the work of lift cylinder 22
Straight up, described cutting disc 21 is fixed on the piston rod end of lift cylinder 22 to stopper rod, and the heart axle of cutting disc 21 with rise
The axial line of the piston rod of sending down abnormally ascending cylinder 22 overlaps.Can be driven by the lift cylinder 22 being fixed on the output shaft of rotary electric machine 20
Cutting disc 21 carries out the regulation of upper-lower position such that it is able to the remaining length of leg is suitably pruned according to actual conditions.
More particularly, some push structures that can promote circuit board motion are additionally provided with workbench 1, push structure is
Push cylinder 4, the cylinder body of push cylinder 4 is fixed on workbench 1, and the piston rod of push cylinder 4 is parallel with delivery track 2,
The piston rod end of push cylinder 4 is fixed with push pedal 5.By the push cylinder 4 being fixed on workbench 1 and its piston rod end
It is fixed with push pedal 5 such that it is able to which realization moves circuit board along the groove 3 of delivery track 2.Push cylinder 4 is by branch
Frame 6 is fixed on workbench 1, and push pedal 5 is being fixed on the piston rod end of push cylinder 4 by screw.Push cylinder 4 is by branch
On frame 6, so that ensure that push cylinder 4 is highly close with delivery track 2, and push pedal 5 is fixed by screw consequently facilitating filling
Unload.
Additionally, being provided with two groups of tune that can adjust two height of delivery track 2 between workbench 1 and two delivery tracks 2
Section positioner.Regulating positioning device includes connector 23, screw rod 3 24, nut 3 25 and regulation spring 26.Two conveyor tracks
Road 2 is separately fixed at the two ends of connector 23, and the lower end of screw rod 3 24 is fixed on workbench 1, and the upper end of screw rod 3 24 is certainly
By holding, regulation spring 26 is set on screw rod 3 24, and nut 3 25 is threaded on screw rod 3 24, and regulation spring 26 is in
Between workbench 1 and nut 3 25, a perforating is offered on connector 23, screw rod 3 24 passes through perforating, and connector 23
Between regulation spring 26 and nut 3 25.The regulation of delivery track 2 is arranged on connector 23, and connector 23 is in regulation bullet
Between spring 26 and nut 3 25, by screw rod 3 24 so as to realize playing a part of support to delivery track 2, meanwhile, when
The nut 3 25 on screw rod 3 24 is tightened, the regulation springs 26 of connector 23 pairs are extruded, so that track reduction, when unscrewing
Nut 3 25 on screw rod 3 24, regulation spring 26 can return to original state, so that track is raised, realize to delivery track
2 play a part of positioning.
Connector 23 includes connection transverse slat 23a, the connection 23b of riser one and the connection 23c of riser two, and perforating is opened in connection
On transverse slat 23a, the connection 23b of riser one is fixed on one end of connection transverse slat 23a, and the connection 23c of riser two is fixed on connection transverse slat 23a
On, and connection riser two 23c is between perforating and connection riser one 23b, the other end of connection transverse slat 23a is fixed with a peace
Dress bar, is arranged with some balancing weights 28 on mounting rod.Two delivery tracks 2 are respectively by connecting the 23b of riser one and connection riser
Two 23c are fixed on connection transverse slat 23a, and the connection 23b of riser one and connection riser two 23c are located at connection transverse slat 23a perforatings
Side, be arranged with balancing weight 28 on the mounting rod that the opposite side of perforating is fixed such that it is able to ensureing the stability of structure
While delivery track 2 is respectively positioned on the side of connection transverse slat 23a.
Summary, the process equipment of this lift circuit plate, its operation principle is as follows:
1st, can be with the position of stabilizing circuit plate, and push cylinder 4 and fixed piston rod in the groove 3 of delivery track 2
Push pedal 5, can promote circuit board to be moved along groove 3.
2nd, the regulation of delivery track 2 is arranged on connector 23, and connector 23 is between regulation spring 26 and nut 3 25,
By screw rod 3 24 so as to realize playing a part of support to delivery track 2, meanwhile, when tightening the nut on screw rod 3 24
3 25,23 pairs of regulation springs 26 of connector are extruded, so that track reduction, when the nut three on Unscrew 3 24
25, regulation spring 26 can return to original state, so that track is raised, realization plays a part of positioning to delivery track 2.
3rd, the longitudinal cylinder 8 on erecting bed 7 can drive material taking hand 10 to vertically move, so as to realize carrying out longitudinal direction to plug-in unit
Positioning;And extruded by one 12 pairs of compression springs 1 being between erecting bed 7 and delivery track 2 of rotating nut, from
And the spacing between erecting bed 7 and delivery track 2 is adjusted, realization carries out located lateral to plug-in unit.Meanwhile, by grafting cylinder 9
Drive the oscilaltion of material taking hand 10 such that it is able to which automation is realized carrying out plug-in unit to circuit board.
4th, the conveying cylinder 14 being fixed on welding bench 27 can drive a welding cylinder 15 to vertically move, so as to realize to point
Welding gun 16 carries out longitudinal register;And by 2 18 pairs of compression springs being between welding bench 27 and delivery track 2 of rotating nut
2 19 are extruded, so as to adjust the spacing between welding bench 27 and delivery track 2, realization carries out laterally fixed to spot-welding gun 16
Position.Meanwhile, by a welding cylinder 15 drive spot welding rob oscilaltion such that it is able to automation realize spot welding rob to component pin with
Circuit board is welded.
5th, the rotary electric machine 20 on the workbench 1 between delivery track 2, can drive 21 turns of cutting disc below circuit board
It is dynamic, and lift cylinder 22 can drive the cutting disc 21 to carry out the regulation of upper-lower position, so as to efficiently realize on circuit board
Carry out pruning smooth at leg.
Specific embodiment described herein is only to the spiritual explanation for example of the present invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from spirit of the invention or surmount scope defined in appended claims.
Although more having used 1, workbench herein;2nd, delivery track;3rd, groove;4th, push cylinder;5th, push pedal;6th, prop up
Frame;7th, erecting bed;8th, longitudinal cylinder;9th, grafting cylinder;10th, material taking hand;11st, screw rod one;12nd, nut one;13rd, compression spring
One;14th, cylinder is conveyed;15th, welding cylinder is put;16th, spot-welding gun;17th, screw rod two;18th, nut two;19th, compression spring two;20th, turn
Dynamic motor;21st, cutting disc;22nd, lift cylinder;23rd, connector;23a, connection transverse slat;23b, connection riser one;23c, connection are perpendicular
Plate two;24th, screw rod three;25th, nut three;26th, spring is adjusted;27th, welding bench;28th, the term such as balancing weight, but be not precluded from using
The possibility of other terms.It is used for the purpose of more easily describing and explaining essence of the invention using these terms;Them
Any additional limitation is construed to all to be disagreed with spirit of the present invention.