A kind of multiple degrees of freedom formula novel intelligent insulating paper paper-inserting machine
Technical field
The present invention relates to motor production of intelligent machinery technical field, a kind of multiple degrees of freedom formula novel intelligent insulating paper is inserted
Paper machine.
Background technology
Motor is a kind of equipment converting electrical current into into mechanical energy, and it is to use the power on coil (namely stator winding) to produce rotation
Turning magnetic field and act on rotor, forming electro-magnetic motor force rotation torque, motor can be divided into direct current generator according to the difference using power supply
And alternating current generator, the motor major part in power system is alternating current generator, can be synchronous motor and asynchronous machine, and motor is main
Be made up of stator and rotor, electrified wire in magnetic field the direction of movement under force with the sense of current relevant with magnetic induction line direction, motor
Operation principle is exactly the magnetic field effect to electric current stress so that electric machine rotation;In motor production process, to rotor and stator
Being required to insert insulating paper, insulating paper is the general name of electric insulation paper using, is mainly used as the exhausted of every electric equipment such as cable and coil
Edge material, has good insulating properties and mechanical strength.
At present manual operation mostly is for motor stator insulated paper update, is usually the most artificial shape that insulating paper is rolled into requirement
Shape, currently mainly has V-type, c-type and semiellipse shape, is the most manually sequentially inserted into inside the dead slot of motor stator, and advances
Put in place, simultaneously intermittent rotary motor stator, whole stator insulated groove will be stuck with, so consume substantial amounts of labour force, make
Having become motor production cost high, and production efficiency is low, simultaneously as be manual operation, motor stator insulated groove is inserted into
Insulating paper advances depth disparity very big, the most also have impact on the quality of motor.In consideration of it, it is many to the invention provides one
Degree of freedom formula novel intelligent insulating paper paper-inserting machine.
Summary of the invention
In order to make up the deficiencies in the prior art, the invention provides a kind of multiple degrees of freedom formula novel intelligent insulating paper paper-inserting machine.
The present invention to solve its technical problem and realize by the following technical solutions.
A kind of multiple degrees of freedom formula novel intelligent insulating paper paper-inserting machine, including base, support means, delta parallel institution, inserts paper
Device and fixing device;The T-shaped platy structure of described base, support means is positioned at base rear side end, and support means and the end
Being connected between Zuo, delta parallel institution is arranged on support means front end, inserts paper device and is positioned at immediately below delta parallel institution,
Fixing device quantity is four, and fixing device is respectively symmetrically and is arranged on base upper surface, and is connected between fixing device and base.
Further, described support means includes elevator, horizontally moving device and vertical lift device;Described moves horizontally
Device is fixed on elevator dead ahead, and vertical lift device is fixed on immediately below elevator;Described horizontally moving device includes water
Flat electric sliding rail, cross sliding clock and fixing seat, and the quantity of horizontal electric slide rail and cross sliding clock is two, horizontal electric slide rail
Parallel Symmetric is arranged, horizontal electric slide rail front end is provided with baffle plate, and the vertical cross section of horizontal electric slide rail is I-shaped structure, water
Smooth block is arranged on horizontal electric slide rail, fixing seat structure in the form of annular discs, and fixing seat two ends are connected with cross sliding clock respectively;
By cross sliding clock moving back and forth on horizontal electric slide rail, can realize inserting the regulation of paper device horizontal level.
Further, described vertical lift device includes lifting screw, sleeve, lifting motor, motor cabinet, rotating shaft, driving tooth
Wheel, locking end cap, fixed mount and driven gear;The quantity of described lifting screw, sleeve and driven gear is two, lifting
Screw rod upper end is connected with elevator, and lifting screw lower end is arranged in sleeve, and sleeve inner offers the outer spiral shell with lifting screw
The female thread that stricture of vagina matches, sleeve bottom end is arranged on base upper surface by bearing, and it is electric that lifting motor uses adjustable speed to slow down
Machine, lifting motor is fixed on base upper surface by motor cabinet, is connected between rotating shaft one end with lifting motor main shaft, rotating shaft
Use key to be attached between the other end and driving gear, and driving gear upper end is locked by locking end cap, rotating shaft
Middle part is fixed by fixed mount, and fixed mount, in the U-shape structure stood upside down, is provided with at fixed mount medium position and matches with rotating shaft
Closing the bearing installed, driven gear is fixed at sleeve medium position, and driven gear is meshed with driving gear;By lifting
The rotation rotarily driving driving gear of motor, driving gear is meshed with driven gear, two driven gear synchronous axial system in the same direction,
And driven gear and sleeve are fixing is connected, thus the synchronous rotary in the same direction of band moving sleeve, pass through screw thread between lifting screw and sleeve
Carry out transmission, and then achieve the function of the raising and lowering motion of lifting screw, it is simple to the whole height of adjusting supporting device,
Can carry out the motor of different model size inserting paper operation, improve the scope of application of the present invention, design more rationalizes.
Further, described delta parallel institution include fixed platform, moving platform, motor cabinet, parallel-connected induction motors, the first rotating shaft,
First connecting rod, rotational pin, second connecting rod, the second rotating shaft, rotating basis and limit spring;Described fixed platform and moving platform are equal
Rounded shape structure, moving platform is positioned at immediately below fixed platform, and the quantity of motor cabinet and rotating basis is three, and motor cabinet is to allocate
Be fixed on fixed platform bottom face in equilateral triangle shape centered by the center of circle of platform, rotating basis centered by the center of circle of moving platform in just
Triangle is arranged on moving platform top end face, and motor cabinet installation site and rotating basis installation site one_to_one corresponding respectively, and
Connection motor is fixed installation by motor cabinet, and parallel-connected induction motors uses adjustable speed twin shaft output motor, first rotating shaft one end and also
Connection electric machine main shaft is connected, and the first rotating shaft other end is connected with first connecting rod upper end, first connecting rod lower end and second connecting rod upper end
Between use rotational pin be attached, second connecting rod lower end is connected with second rotating shaft one end, and the second rotating shaft other end is arranged on rotation
Turning on pedestal, rotating basis lower end is provided with swivel bearing, and swivel bearing fixes with moving platform upper surface, on rotating basis
End is provided with the double end sleeve matched with the second rotating shaft, first connecting rod middle inside and second connecting rod middle inside and arranges respectively
Having the first mounting seat and the second mounting seat, limit spring is between the first mounting seat and the second mounting seat, and limit spring upper end
Being connected with the first mounting seat, limit spring lower end is connected with the second mounting seat;During specific works, in parallel motor turn
Move the rotation driving the first rotating shaft, and first connecting rod and the first rotating shaft are coaxially connected, thus driven by the rotation of first connecting rod
The rotation of second connecting rod, and then drive the motion of moving platform, and tremble when reducing the motion of delta parallel institution by limit spring
Dynamic property, adds the stationarity of delta parallel institution motion, and delta parallel institution is big with serial mechanism phase specific stiffness, motion
Flexibly, Stability Analysis of Structures, bearing capacity is strong and fine motion precision is high, and delta parallel institution can carry out three translation three rotations in space
The motion in six-freedom degree direction altogether, and space is little, movement velocity is fast, kinematic dexterity is good, in the present invention, passes through
Delta parallel institution can drive whole slotting paper device to carry out three translations three in space and rotate the motion in six-freedom degree direction altogether,
Insulation tank on motor stator medial wall can be carried out para-position one by one and insert paper.
Further, described slotting paper device includes base plate, travel mechanism, suction mechanism of paper and paper advance mechanism, and travel mechanism and suction
The quantity of mechanism of paper is two;Described travel mechanism is respectively symmetrically layout along the central transverse axis of base plate, and travel mechanism with
Base plate is connected, and inhales mechanism of paper and is positioned at immediately below travel mechanism, and paper advance mechanism is positioned at base plate medium position, and paper advance mechanism and the end
Plate is connected;Described travel mechanism includes motorized rails, mobile support saddle, rule and mobile spring;Described motorized rails is left
Right two ends are respectively arranged with spacing clamp, and mobile support saddle is arranged on motorized rails, and rule quantity is two, and rule is the most right
Claiming to be arranged in before and after motorized rails on lateral wall, mobile spring is fixed at mobile support saddle medium position;Described suction mechanism of paper
Including micro air pump, suction nozzle, c-type sleeve pipe and insulating paper;Described micro air pump lower end is provided with suction nozzle, and suction nozzle material is
Elastomeric material, suction nozzle is shaped hollow round table structure, and c-type sleeve pipe is positioned at immediately below suction nozzle, and uses between c-type sleeve pipe and suction nozzle
The technology of expanding with heat and contract with cold is attached, and insulating paper is positioned at c-type inside pipe casing;Described paper advance mechanism includes paper feeding electric pushrod, send
Cardboard and telescopic press head;Described paper feeding electric pushrod bottom is fixed on base plate, in the middle part of paper feeding electric pushrod top and paper pushing board
Be connected, paper pushing board in " in " font structure, telescopic press head quantity is two, and telescopic press head one end is provided with telescopic block, and stretches
Contracting block is connected with paper pushing board, telescopic press head other end semicircular in shape shape structure, and in the part of telescopic press head semicircular in shape structure
Uniformly offer steam vent.First according to the size model of the motor stator of paper to be inserted, by mobile support saddle on motorized rails
Mobile, and according to the measurement of rule, determine corresponding size-spacing;Then by micro air pump produce in suction nozzle by under
Suction on and, under suction, the insulating paper folded carries over c-type sleeve pipe and is tightly held, and when inserting paper, passes through delta
Parallel institution, by the insulation tank on insulating paper lower end aligned motor stator medial wall, then starts paper feeding electric pushrod, passes through paper feeding
The stretching of electric pushrod drives paper pushing board the most down to move, and paper pushing board is fixed with telescopic press head and is connected, and works as telescopic press head
Pressure more than micro air pump produce suction time, insulating paper carries over c-type sleeve pipe medial wall and the most down moves, and is inserted perpendicularly into
In insulation tank on motor stator medial wall, it is achieved that the function of motor stator insulated slotting paper, when insulating paper is completely inserted into electricity
Behind machine stator insulation tank inside, driven the vertical ascending motion of paper pushing board by the contractile motion of slotting paper electric pushrod, insert paper device
Two-way suction paper and the function of two-way paper feeding can be realized, compared with unidirectional slotting paper, the slotting paper efficiency being totally doubled, and operation
Quickly and easily, insert paper efficiency height, improve efficiency and quality that motor produces.
Further, described fixing device includes line slideway, mobile slide block, fixation clamp and clamping screw;Described straight line is led
Linearly being evenly arranged with spacing hole on rail upper surface, mobile slide block is arranged on line slideway, and offers logical on mobile slide block
Hole, fixation clamp front end is arc shape structure, and fixation clamp rear end is connected with mobile slip front, mobile slide block and line slideway it
Between use clamping screw be fixed;During use, motor stator is disposed vertically in the middle of four fixing devices, by mobile sliding
Block motion on line slideway, when fixation clamp front end contacts with motor stator lateral wall, by clamping screw, movement is sliding
Block is fixed on line slideway, has reached the effect fixing to motor stator, has prevented motor stator position during slotting paper from moving
The problem of dislocation.
Compared with prior art, the invention have the advantages that
(1) present invention can carry out insulating paper and inserts paper operation motor stator, and whole slotting paper process is all machine automatization equalization,
Slotting paper is quick and convenient and safety is high, inserts paper depth consistency high, decreases the input of labour force, reduces the one-tenth that motor produces
This, and improve the quality that motor produces to a certain extent.
(2) support means of the present invention can realize the effect of synchronous same-speed raising and lowering on the vertical plane, can enter in the horizontal plane
Row is movable, it is simple to the present invention carries out insulating paper to the motor stator of different model size and inserts paper, applied widely.
(3) the delta parallel institution of the present invention can carry out the motion in three translations three rotation six-freedom degree directions altogether in space,
And space is little, movement velocity is fast, kinematic dexterity is good, in the present invention, can drive whole by delta parallel institution
Insert paper device in space, to carry out three translations three rotate the motion in altogether six-freedom degree directions, can exhausted on motor stator medial wall
Edge groove carries out para-position one by one and inserts paper.
(4) insulating paper folded can be held by the slotting paper device of the present invention by suction principle, then will be inhaled by pressure principle
The insulating paper bi-directional synchronization lived is inserted in the insulation tank of motor stator, compared with unidirectional slotting paper, and the slotting paper being totally doubled
Efficiency, and operation is quickly and easily, inserts paper efficiency height, improves efficiency and quality that motor produces.
(5) motor stator of different model can be fixed by the fixing device of the present invention, prevents motor during slotting paper
The problem that position of stator moves dislocation.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the perspective view of the present invention;
Fig. 2 is the perspective view of support means of the present invention;
Fig. 3 is the perspective view of vertical lift device of the present invention;
Fig. 4 is the top view of vertical lift device of the present invention;
Fig. 5 is perspective view when delta parallel institution of the present invention and the cooperation of slotting paper device;
Fig. 6 is the perspective view of delta parallel institution of the present invention;
Fig. 7 is the perspective view that the present invention inserts paper device;
Fig. 8 is the perspective view of fixing device of the present invention.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, below in conjunction with tool
Body illustrates, and the present invention is expanded on further.
As shown in Figures 1 to 8, a kind of multiple degrees of freedom formula novel intelligent insulating paper paper-inserting machine, including base 1, support means 2,
Delta parallel institution 3, slotting paper device 4 and fixing device 5;The described T-shaped platy structure of base 1, support means 2
In base 1 rear side end, and it is connected between support means 2 and base 1, before delta parallel institution 3 is arranged on support means 2
End, inserts paper device 4 and is positioned at immediately below delta parallel institution 3, and fixing device 5 quantity is four, and fixing device 5 is respectively symmetrically
It is arranged on base 1 upper surface, and is connected between fixing device 5 and base 1.
As shown in Figures 2 to 4, described support means 2 includes elevator 21, horizontally moving device 22 and vertical lift dress
Put 23;Described horizontally moving device 22 is fixed on elevator 21 dead ahead, and vertical lift device 23 is fixed on elevator 21
Underface;Described horizontally moving device 22 includes horizontal electric slide rail 221, cross sliding clock 222 and fixing seat 223, and water
The quantity of flat electric sliding rail 221 and cross sliding clock 222 is two, and horizontal electric slide rail 221 Parallel Symmetric is arranged, horizontal electric
Slide rail 221 front end is provided with baffle plate, and the vertical cross section of horizontal electric slide rail 221 is I-shaped structure, and cross sliding clock 222 is installed
On horizontal electric slide rail 221, fixing seat 223 structure in the form of annular discs, fixing seat 223 two ends respectively with cross sliding clock 222 phase
Connect;By cross sliding clock 222 moving back and forth on horizontal electric slide rail 221, can realize inserting paper device 4 horizontal position
The regulation put.
As shown in Figures 2 to 4, described vertical lift device 23 include lifting screw 231, sleeve 232, lifting motor 233,
Motor cabinet 234, rotating shaft 235, driving gear 236, locking end cap 237, fixed mount 238 and driven gear 239;Described
The quantity of lifting screw 231, sleeve 232 and driven gear 239 is two, and lifting screw 231 upper end is connected with elevator 21
Connecing, lifting screw 231 lower end is arranged in sleeve 232, and sleeve 232 is internal offers the external screw thread phase with lifting screw 231
The female thread coordinated, sleeve 232 bottom is arranged on base 1 upper surface by bearing, and lifting motor 233 uses adjustable speed
Reducing motor, lifting motor 233 is fixed on base 1 upper surface by motor cabinet 234, rotating shaft 235 one end and lifting motor
It is connected between 233 main shafts, between rotating shaft 235 other end and driving gear 236, uses key to be attached, and driving gear 236
Upper end is locked by locking end cap 237, is fixed by fixed mount 238, fixed mount 238 in the middle part of rotating shaft 235
In the U-shape structure stood upside down, at fixed mount 238 medium position, it is provided with the bearing installed that matches with rotating shaft 235, driven gear
239 are fixed at sleeve 232 medium position, and driven gear 239 is meshed with driving gear 236;By lifting motor 233
The rotation rotarily driving driving gear 236, driving gear 236 is meshed with driven gear 239, two driven gears 239
Synchronous axial system in the same direction, and driven gear 239 and sleeve 232 is fixing is connected, thus the synchronous rotary in the same direction of band moving sleeve 232,
Carry out transmission by screw thread between lifting screw 231 and sleeve 232, and then achieve the raising and lowering fortune of lifting screw 231
Dynamic function, it is simple to the whole height of adjusting supporting device 2, can carry out the motor stator 6 of different model size inserting paper
Operation, improves the scope of application of the present invention, and design more rationalizes.
As shown in Figure 5 and Figure 6, described delta parallel institution 3 includes fixed platform 31, moving platform the 32, first side chain 33
With the second side chain 34;Described fixed platform 31 and moving platform 32 are disc-shaped structure, and moving platform 32 is positioned at fixed platform 31
Surface;The first described side chain 33 and the quantity of the second side chain 34 are two, the first side chain 33 and the second equal position of side chain 34
Between fixed platform 31 and moving platform 32, the two ends of the first side chain 33 and the second side chain 34 respectively with fixed platform 31 and dynamic flat
Platform 32 is connected, and the horizontal installation angle of the first side chain 33 and the second side chain 34 is 90 degree;The first described side chain 33 wraps
Include the first ear mount 331, Hooke's hinge the 332, first electric pushrod the 333, first spherical hinge 334, first connects post 335 and first
Damping spring 336;The first described ear mount 331 is fixed on fixed platform 31 upper surface, and the first ear mount 331 is electronic with first to be pushed away
Using Hooke's hinge 332 to be attached between bar 333 lower end, the first electric pushrod 333 upper end is connected with the first spherical hinge 334,
First spherical hinge 334 is fixed on the lower surface of moving platform 32 by the first connection post 335, and the first damping spring 336 is around being enclosed within
On first electric pushrod 333, the rotation of both direction can be carried out by Hooke's hinge 332, can be carried out by the first spherical hinge 334
The rotation in three directions, can be moved up and down by the first electric pushrod 333, and the first side chain 33 uses 2-UPS parallel institution
Form, and add stationarity when the first side chain 33 moves by the first damping spring 336, improve the motion of the present invention
Performance;The second described side chain 34 includes the second ear mount 341, rotational pin the 342, second electric pushrod the 343, second spherical hinge
345, second connects post 346 and the second damping spring 347;The second described ear mount 341 is fixed on fixed platform 31 upper surface,
Rotational pin 342 is used to be attached, on the second electric pushrod 343 between second ear mount 341 and the second electric pushrod 343 lower end
End is connected with the second spherical hinge 345, and the second spherical hinge 345 is fixed on the lower surface of moving platform 32 by the second connection post 346
On, the second damping spring 347, around being enclosed within the second electric pushrod 343, can carry out the rotation in a direction by rotational pin 342,
The rotation in three directions can be carried out by the second spherical hinge 345, can be moved up and down by the second electric pushrod 343, second
Side chain 34 uses the form of 2-RPS parallel institution, and is added when the second side chain 34 moves by the second damping spring 347
Stationarity, improves the exercise performance of the present invention;Delta parallel institution 3 is by fixed platform 31, moving platform the 32, first side chain
33 and second side chain 34 constitute four-degree-of-freedom symmetric parallel mechanism, and it uses the parallel institution form of 2-UPS-2-RPS,
It can realize moving along X-axis and Z axis and around X-axis and moving around rotation totally four degree of freedom directions of Y-axis, and four from
All independent by spending, by four degree of freedom can also co-ordination, moving platform 32 track made along the curvilinear motion of predetermined space,
Stable movement, motion flexibly, drives whole slotting paper device 4 can carry out four freedom in space by delta parallel institution 3
The motion in degree direction, can carry out para-position one by one to the insulation tank on motor stator 6 medial wall and insert paper.
As shown in figure 5 and figure 7, described slotting paper device 4 includes base plate 41, travel mechanism 42, inhales mechanism of paper 43 and paper feeding
Mechanism 44, and travel mechanism 42 and inhale the quantity of mechanism of paper 43 and be two;Horizontal along base plate 41 of described travel mechanism 42
Central axis is respectively symmetrically layout, and travel mechanism 42 is connected with base plate 41, inhale mechanism of paper 43 be positioned at travel mechanism 42 just under
Side, paper advance mechanism 44 is positioned at base plate 41 medium position, and paper advance mechanism 44 is connected with base plate 41;Described travel mechanism
42 include motorized rails 421, mobile support saddle 422, rule 423 and mobile spring 424;Described motorized rails about 421
Two ends are respectively arranged with spacing clamp, and mobile support saddle 422 is arranged on motorized rails 421, and rule 423 quantity is two, carve
Degree chi 423 is respectively symmetrically and is arranged in before and after motorized rails 421 on lateral wall, and mobile spring 424 is fixed on mobile support saddle 422
At medium position;Described suction mechanism of paper 43 includes micro air pump 431, suction nozzle 432, c-type sleeve pipe 433 and insulating paper 434;
Described described micro air pump 431 lower end is provided with suction nozzle 432, and suction nozzle 432 material is elastomeric material, suction nozzle 432 in
Shaped hollow round table structure, c-type sleeve pipe 433 is positioned at immediately below suction nozzle 432, and uses between c-type sleeve pipe 433 and suction nozzle 432
The technology of expanding with heat and contract with cold is attached, and it is internal that insulating paper 434 is positioned at c-type sleeve pipe 433;Described paper advance mechanism 44 includes paper feeding electricity
Dynamic push rod 441, paper pushing board 442 and telescopic press head 443;Described paper feeding electric pushrod 441 bottom is fixed on base plate 41,
Paper feeding electric pushrod 441 top is connected in the middle part of paper pushing board 442, paper pushing board 442 in " in " font structure, telescopic press head
443 quantity are two, and telescopic press head 443 one end is provided with telescopic block, and telescopic block is connected with paper pushing board 442, telescopic press head
Other end semicircular in shape shape structure, and uniformly offer steam vent in the part of telescopic press head semicircular in shape structure.First according to treating
Insert the size model of the motor stator 6 of paper, by the mobile support saddle 422 movement on motorized rails 421, and according to rule
The measurement of 423, determines corresponding size-spacing;Then produced from bottom to top in suction nozzle 432 by micro air pump 431
Suction, under suction, the insulating paper 434 folded carries over c-type sleeve pipe 433 and is tightly held, and when inserting paper, passes through delta
Parallel institution 3, by the insulation tank on insulating paper 434 lower end aligned motor stator 6 medial wall, then starts paper feeding electric pushrod 441,
Paper pushing board 442 is driven vertically down to move by the stretching of paper feeding electric pushrod 441, and paper pushing board 442 and telescopic press head
443 fixing connections, when the suction that the pressure of telescopic press head 443 produces more than micro air pump 431, insulating paper 434 carries over C
The most down moving in molded cannula 433 medial wall, and is perpendicularly inserted in the insulation tank on motor stator 6 medial wall, it is achieved that electricity
The function of paper is inserted in machine stator 6 insulation, after insulating paper 434 is completely inserted into motor stator 6 insulation tank inside, by slotting paper electricity
The contractile motion of dynamic push rod 441 drives the vertical ascending motion of paper pushing board 442, inserts paper device 4 and can realize two-way suction paper and two-way
The function of paper feeding, compared with unidirectional slotting paper, the slotting paper efficiency being totally doubled, and operation is quickly and easily, inserts paper efficiency height,
Improve efficiency and quality that motor produces.
As shown in Figure 8, described fixing device 5 includes line slideway 51, mobile slide block 52, fixation clamp 53 and clamping screw
54;Linearly being evenly arranged with spacing hole on described line slideway 51 upper surface, mobile slide block 52 is arranged on line slideway 51
On, and offering through hole on mobile slide block 52, fixation clamp 53 front end is arc shape structure, fixation clamp 53 rear end and mobile slide block
52 front ends are connected, and use clamping screw 54 to be fixed between mobile slide block 52 and line slideway 51;During use, by electricity
Machine stator 6 is disposed vertically in the middle of four fixing devices 5, by the mobile slide block 52 motion on line slideway 51, when solid
When clamp 53 front end contacts with motor stator 6 lateral wall, by clamping screw 54, movement slide block 52 is fixed on line slideway
On 51, reach, to the fixing effect of motor stator 6, to prevent the problem that dislocation is moved in motor stator 6 position during slotting paper.
The ultimate principle of the present invention, principal character and advantage have more than been shown and described.Skilled person will appreciate that of the industry,
The present invention is not restricted to the described embodiments, the principle that the present invention is simply described of the description in above-described embodiment and description,
Without departing from the spirit and scope, the present invention also has various changes and modifications, and these changes and improvements both fall within
In scope of the claimed invention.Claimed scope is defined by appending claims and equivalent thereof.