Background technique
Ultrasonic machining is to make the tool of small amplitude motion using supersonic frequency, and be free in liquid between workpiece by it
Abrasive material the knocking of surface to be machined is acted on, the special process for being crushed workpiece material surface gradually.Ordinary ultrasonic is processed
By liquid medium converted products, belong to the special process, application range is small, is not used in the wider machining of range, grinding
In processing, and structure is complicated for ultrasonic machine tool, at high price.Therefore, rotation Ultrasonic machining and tool rotation combination got up
Turn Ultrasonic machining mode gradually to have been more and more widely used.
CN106181595A discloses a kind of concretion abrasive ultrasonic machining device and method, belongs to hard brittle material processing neck
Domain, can carry out the face grinding of special-shaped hole machined peace, the concretion abrasive ultrasonic machining device include XY axis feed arrangement,
Work nest, main shaft column, concretion abrasive tool, Z axis servo feeding apparatus and ultrasonic wave generating system, the supersonic generator
Using ultrasonic constant-current supply, the ultrasound constant-current supply includes the acquisition for acquiring the electric current and voltage at ultrasonic transducer both ends
The processing unit of unit and the equivalent impedance for calculating Ultrasonic machining system, the processing unit by the equivalent impedance of calculating with
Impedance settings adjust the feed speed of concretion abrasive tool and/or the output electric current of supersonic generator after being compared
Section.Although above-mentioned concretion abrasive ultrasonic machining device machining accuracy is higher, inefficient, guarantee machining accuracy cannot achieve
In the case where rapid processing.
TWM372763U discloses a kind of ultrasonic activation formula cutter mould group, and first coil is fixed on fixed ontology.Sound wave
Generator is electrically connected to first coil.Rotating body is rotatably mounted to fixed ontology.Second coil is fixed on rotating body.
Two first contacts are fixed on rotating body and are electrically connected to the second coil.Hilt ontology is detachably mounted on rotating body
On.Two second contacts are fixed on hilt ontology, and are respectively electrically connected to two first contacts.Voltage regulator circuit plate is set to hilt ontology
On, and there are two input terminals to be electrically connected to two second contacts, the input voltage that generates is simultaneously when rotation to stablize the second coil
Output voltage is exported in two output ends.First piezoelectric patches and the second piezoelectric patches are respectively electrically connected to two output ends to produce jointly
Raw vibration.Expanding bar is fixed on hilt ontology, to give expanding, above-mentioned ultrasonic activation formula cutter mould group processing essence to vibration
Spend to be improved, the material and processing efficiency being capable of processing are limited.
KR20150101628A discloses the device of a free profile cutting high hardness material, for cutting hard material
Material, utilizes ultrasonic wave, comprising: cutting tool cuts hard material and diamond lap with supersonic generator, using super
Sound wave is made from supersonic generator and mainly from stainless steel;One abrasive jet applies abrasive material, the grain including fine diamond
Sub- hard material cuts hard material;And cutting tool pilot instrument, it is cut for applied force cutting tool in vertical direction
Hard material.The device cuts a kind of hard material, can be applied using ultrasonic wave, for handle hard material such as sapphire with
And reinforcing glass is applied to smart phone etc., however the device processing efficiency of above-mentioned free profile cutting high hardness material is not high,
It cannot achieve rapid processing in the case where guaranteeing machining accuracy.
Currently, tradition is integrated with the ultrasonic wave knife handle of vibrational system, and balance is bad in existing knife assembly, become
Width bar is easy to happen inclination by collision, to increase the circle bounce of amplitude transformer, influences the dynamic balancing of amplitude transformer, leads to ultrasonic wave
Cutter head assembly machining accuracy is poor, and service life is shorter.
It, can be due to friction in attrition process and to the grind section of sound wave knife handle bottom due to the cyclic structure using entirety
Power and generate amount of heat, grind section is impacted, also, in process of lapping grind section can not to workpiece generate grindstone dust
It is effectively discharged, to make the workpiece surface out-of-flatness after grinding or exist to scratch, grind section service life can also be made
At influence, in order to avoid there is this phenomenon, generally require to take a significant amount of time to grindstone dust removal, so that the production time is big
Amount waste, also, therefore to the regular replacement of abrasive disk but also the production cost increases.
In conclusion the balance of cutter head assembly is bad in existing knife assembly, lead to ultrasonic wave cutter head assembly processing essence
It is higher to spend poor and production cost.
Utility model content
One of the utility model is designed to provide a kind of ultrasonic wave cutter head assembly, to solve in existing knife assembly,
The balance of cutter head assembly is bad, causes ultrasonic wave cutter head assembly machining accuracy poor and the higher technical problem of production cost.
In order to solve the above technical problems, the utility model uses following technical scheme;The utility model first aspect mentions
The ultrasonic wave cutter head assembly of confession, wherein include:
Ultrasonic wave cutter hub, first end with machine tool chief axis for connecting;
Radio transceiver device is mounted on ultrasonic wave cutter hub, is correspondingly arranged with wireless transmission emitter;
Ultrasonic transducer, the piezoelectric vibrator including amplitude transformer He the first end that the amplitude transformer is arranged in, the piezoelectricity
Oscillator is connect with the radio transceiver device;The second end of the amplitude transformer is used to connect with cutterhead, the amplitude transformer
First end is provided with connector, and the amplitude transformer is connect by the connector with the second end of the ultrasonic wave cutter hub;
Balancing loop, the balancing loop are arranged on ultrasonic wave cutter hub or the amplitude transformer;
Cutterhead, the cutterhead include cutterhead body, and one end of the cutterhead body is provided with cricoid grinding part, the mill
It cuts and offers chip space in portion, the cutterhead body has interconnecting piece far from one end of the grinding part, sets on the interconnecting piece
It is equipped with cutterhead handle, the cutterhead handle is connect by cutterhead connector with the amplitude transformer.
In any of the above-described technical solution, further, cutting edge, the cutting edge are formed at the notch of the chip space
It is cut for the high point to workpiece surface, to buffer the collision of the cutting between the grinding part and workpiece.
In any of the above-described technical solution, further, the second end of the amplitude transformer is internally provided with accommodation groove;
The cutterhead connector includes connection cover and collet, and the collet is arranged in the accommodation groove, institute
It states collet and is connect with the second end of the amplitude transformer to clamp the cutterhead handle, the connection cover to clamp the spring
Collet.
In any of the above-described technical solution, further, the shape of the interconnecting piece is tapered, and the interconnecting piece is described in
The orient diameter of amplitude transformer to cutterhead body is incremented by.
In any of the above-described technical solution, further, the balancing loop includes ring body, and the ring body has opposite
Medial surface and lateral surface, the medial surface are used to surround the mounting hole at the middle part of the ring body;
The lateral surface is provided with multiple with repeated hole and multiple described uniformly distributed along the circumferential direction of the lateral surface with repeated hole.
In any of the above-described technical solution, further, the balancing loop further includes regulating device, the regulating device
It is installed on described in repeated hole.
In any of the above-described technical solution, further, the accommodation groove of the inside setting of the second end of the amplitude transformer is in
Cone cell;Successively decrease in the direction of the accommodation groove diameter from second end to the first end of amplitude transformer.In any of the above-described technical solution, into
One step, the ultrasonic transducer further includes cover board and clamping screw;
It is offered on the first end end face of the amplitude transformer and the matched threaded hole of the clamping screw, the piezoelectric vibrator
On offer mounting hole, the cover board is arranged in side of the piezoelectric vibrator far from the amplitude transformer, opens up on the cover board
There is fixation hole;
The clamping screw is used to cooperate across the fixation hole, mounting hole and the threaded hole, so that the piezoelectricity shakes
Son, cover board are locked in the amplitude transformer.
It further include emitting signal to the radio transceiver device further in any of the above-described technical solution
It is wirelessly transferred emitter, the wireless transmission emitter is mounted on the machine tool chief axis, is connected with ultrasonic-frequency power supply generator
It connects.
By adopting the above technical scheme, the utility model has the following beneficial effects:
In ultrasonic wave cutter head assembly provided by the utility model, the balancing loop is arranged in the ultrasonic wave cutter hub or institute
It states in amplitude transformer, the interconnecting piece is connect with the amplitude transformer, offers chip space on the grinding part.By in amplitude transformer or
It is provided with balancing loop on ultrasonic wave cutter hub, cutterhead is provided in amplitude transformer, chip space is offered on cutterhead, in conjunction with dynamic flat
The ring that weighs balances and uses chip space chip removal, has the advantages that cutter head assembly balance is good and production cost is low etc..
Further, cutting edge is formed at the notch of the chip space, the cutting edge is used for the high point to workpiece surface
It is cut, to buffer the collision of the cutting between the grinding part and workpiece.
The additional aspect and advantage of the utility model will become obviously in following description section, or practical new by this
The practice of type is recognized.
Detailed description of the invention
It below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of ultrasonic wave cutter head assembly described in an embodiment of the present invention;
Fig. 2 is the cross-sectional view of the ultrasonic wave cutter head assembly in Fig. 1;
Fig. 3 is the structural schematic diagram that cavity is installed in ultrasonic wave cutter hub described in an embodiment of the present invention;
Fig. 4 is the structural schematic diagram of balancing loop in ultrasonic wave cutter head assembly described in an embodiment of the present invention;
Fig. 5 is that the structure of radio transceiver device in ultrasonic wave cutter head assembly described in an embodiment of the present invention is shown
It is intended to;
Fig. 6 is the structural schematic diagram of amplitude transformer in ultrasonic wave cutter head assembly described in an embodiment of the present invention;
Fig. 7 is the detonation configuration signal of piezoelectric vibrator in ultrasonic wave cutter head assembly described in an embodiment of the present invention
Figure;
Fig. 8 is the schematic perspective view of cutterhead in ultrasonic wave cutter head assembly described in an embodiment of the present invention.
Appended drawing reference:
100, ultrasonic wave cutter hub;110, cavity is installed;120, positioning convex platform;130, cable-through hole;300, radio transceiver
Device;310, ring support is received;311, third mounting groove;312, the second connection jaws;320, magnetic core is received;321, the 4th installation
Slot;322, third connection jaws;330, receiving coil;400, ultrasonic transducer;410, amplitude transformer;411, connector;413, recessed
Slot;415, threaded hole;416, raised;420, piezoelectric vibrator;422, the first piezoelectric ceramic piece;423, first electrode sheet;424,
Two piezoelectric ceramic pieces;430, cover board;440, clamping screw;501, balancing loop;502, medial surface;503, lateral surface;504, match
Repeated hole;600, cutterhead;610, cutterhead body;620, grinding part;621, chip space;622, cutting edge;630, interconnecting piece;640, knife
Disk handle;700, cutterhead connector;710, connection cover;720, collet;800- locking lid.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.It should be noted that in the absence of conflict, the feature in embodiments herein and embodiment can
To be combined with each other.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection;It can be mechanical connection, be also possible to be electrically connected;Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Referring to figs. 1 to Fig. 8, explanation is further explained to the utility model below with reference to specific embodiment.
The ultrasonic wave cutter head assembly that the embodiment of the utility model first aspect provides, wherein include:
Ultrasonic wave cutter hub 100, first end with machine tool chief axis for connecting;
Radio transceiver device 300 is mounted on ultrasonic wave cutter hub 100, is correspondingly arranged with wireless transmission emitter;
Ultrasonic transducer 400, the piezoelectric vibrator including amplitude transformer 410 He the first end that the amplitude transformer 410 is arranged in
420, the piezoelectric vibrator 420 is connect with the radio transceiver device 300;The second end of the amplitude transformer 410 be used for
Cutterhead 600 connects, and the first end of the amplitude transformer 410 is provided with connector 411, and the amplitude transformer 410 passes through the connector
411 connect with the second end of the ultrasonic wave cutter hub 100;
Balancing loop 501, the balancing loop 501 are arranged on ultrasonic wave cutter hub 100 or the amplitude transformer 410;
Cutterhead 600, the cutterhead 600 include cutterhead body 610, and one end of the cutterhead body 610 is provided with cricoid
Grinding part 620, the cutterhead body 610 have interconnecting piece 630 far from one end of the grinding part 620, set on the interconnecting piece
It is equipped with cutterhead handle, the cutterhead handle is connect by cutterhead connector with the amplitude transformer, offers chip removal on the grinding part 620
Slot 621.
Above-mentioned ultrasonic wave cutter head assembly, ultrasonic wave cutter hub 100 is for playing connecting machine tool main shaft, installation ultrasonic transducer
The effect of 400 equal components, wireless transmission emitter are used to the high-frequency electrical energy signal that ultrasonic-frequency power supply generator generates passing through nothing
The mode of line transmission is transmitted on radio transceiver device 300, and radio transceiver device 300 is for receiving wireless transmission hair
The signals revivification sensed is simultaneously passed to ultrasonic transducer 400 at high-frequency electrical energy signal by the signal of injection device sending, ultrasound
Wave transducer 400 is used to that electrical signal of the frequency to be converted to high-frequency mechanical vibration using the piezoelectricity back wash effect of piezoelectric vibrator 420, and leads to
It crosses amplitude transformer 410 mechanical oscillation is amplified and be transferred to workpieces processing, and then traditional machine tool can be cooperated to realize ultrasound
Processing.
The ultrasonic wave cutter head assembly, can be applied to traditional machine tool, in the feelings for not changing machine tool structure
Ultrasonic machining is carried out under condition, ultrasonic transducer 400 is connect by the connector 411 of amplitude transformer 410 with ultrasonic wave cutter hub 100,
It is connected by groove 413 and connector 411, connector can be used between connector 411 and ultrasonic wave cutter hub 100 according to demand
411 (screws) or gluing are fixed.Connector 411 or gluing, which is arranged, can further strengthen the structural strength of product.
621 one side of chip space plays the role of heat dissipation, on the other hand plays discharge grindstone dust, ensures grinding matter
The service life of grinding part 620 is extended while amount.
In any of the above-described technical solution, further, cutting edge 622 is formed at the notch of the chip space 621, it is described
Cutting edge 622 is touched for cutting the high point of workpiece surface with buffering the cutting between the grinding part 620 and workpiece
It hits.
The cutting edge 622 formed at the notch of chip space 621 can cut workpiece surface high point, to play slow
The cutting collision between cutterhead body 610 and workpiece is rushed, ensures the processing quality of workpiece.
In any of the above-described technical solution, further, the second end of the amplitude transformer is internally provided with accommodation groove
417;
The cutterhead connector 700 includes connection cover 710 and collet 720, and the collet 720 is arranged described
In accommodation groove 417, the collet 720 is to clamp the cutterhead handle 640, the connection cover 710 and the amplitude transformer
Second end is connected to clamp the collet 720.
In any of the above-described technical solution, further, the accommodation groove 417 of the inside setting of the second end of the amplitude transformer
It is tapered;Successively decrease in the direction of second end to first end of 417 diameter of accommodation groove from amplitude transformer.Accommodation groove 417 is set as boring
The purpose of shape is easy for being adapted with the shape of collet 720, thus using connection cover 710 for the pine of collet 720
Tightness is adjusted.
In any of the above-described technical solution, further, the second end of the connection cover 710 and the amplitude transformer passes through spiral shell
Line connection, has the characteristics that installation and adjustment are convenient by the way of threaded connection.
It further include locking lid 800 further in any of the above-described technical solution, the locking lid 800 is to connect
The first end for stating amplitude transformer is connected with the second end of the ultrasonic wave cutter hub.The effect of locking lid 800 is to increase amplitude transformer and surpass
The fastness of sound wave cutter hub connection.
In any of the above-described technical solution, further, the shape of the interconnecting piece 630 is tapered, the interconnecting piece 630
It is incremented by from the amplitude transformer 410 to the orient diameter of cutterhead body 610.
The tapered design of the shape of interconnecting piece 630, can be improved and connect between knife amplitude transformer 410 and cutterhead body 610
Fastness, thus ensure amplitude transformer 410 be able to drive cutterhead body 610 rotation stationarity, reduce grinding part 620 generate
End face run-out and circularity bounce.
The ultrasonic wave cutter head assembly can cooperate balancing loop, and stability and structural strength are preferable, luffing after product collision
Bar 410 is not easy to tilt, and is not easy to influence the circle bounce of amplitude transformer 410 and dynamic balancing, machining accuracy is higher, and service life is longer.
In any of the above-described technical solution, further, the balancing loop 501 includes ring body, and the ring body has phase
Pair medial surface 502 and lateral surface 503, the medial surface 502 be used for surround the ring body middle part mounting hole;
The lateral surface 503 be provided with it is multiple with repeated hole 504, and it is multiple it is described with repeated hole 504 along the lateral surface 503
It is circumferential uniformly distributed.
In any of the above-described technical solution, further, the balancing loop 501 further includes regulating device, the adjusting
Device is installed on described in repeated hole 504.
By matching device for installing and adjusting in repeated hole 504 in balancing loop 501, to adjust 501 shape of knife handle and balancing loop
At whole center of gravity spatial position, maintain it on the rotation axis of knife handle, to be conducive to maintain rotation process
In equilibrium state, improve machining accuracy, reduce the generation of mechanical breakdown.
Regulating device is column structure;Column structure has external screw thread, for matching with the internal screw thread with repeated hole 504.
The end of column structure offers driver slot, and driver slot can be flat recess or cross recess.
In any of the above-described technical solution, further, it is arranged fluted 413 in 100 second end of ultrasonic wave cutter hub,
The connector 411 that the first end of groove 413 and amplitude transformer 410 is arranged is cooperatively connected.
In any of the above-described technical solution, further, the ultrasonic transducer 400 further includes cover board 430 and locking
Bolt 440;
It is offered on the first end end face of the amplitude transformer 410 and the matched threaded hole 415 of the clamping screw 440, institute
It states and offers mounting hole on piezoelectric vibrator 420, the cover board 430 is arranged in the piezoelectric vibrator 420 far from the amplitude transformer 410
Side, offer fixation hole on the cover board 430;
The clamping screw 440 is used to cooperate across the fixation hole, mounting hole and the threaded hole 415, so that described
Piezoelectric vibrator 420, cover board 430 are locked in the amplitude transformer 410.
The piezoelectric vibrator 420 includes successively folding the first piezoelectric ceramic piece 422, first electrode sheet 423, the second piezoelectricity set
Potsherd 424, second electrode sheet, third piezoelectric ceramic piece, third electrode slice etc..The cathode of first piezoelectric ceramic piece 422
Connect with the first end end face of the amplitude transformer 410, anode and second piezoelectric ceramics of first piezoelectric ceramic piece 422
The anode of piece 424 is oppositely arranged, and the cathode of second piezoelectric ceramic piece 424 is opposite with the cathode of the third piezoelectric ceramic piece
It is arranged, anode connects with anode between adjacent piezoelectric ceramic piece, and cathode connects with cathode, by logical to corresponding electrode slice
Electricity can be realized the piezoelectric property of piezoelectric vibrator 420.
In any of the above-described technical solution, further, it is provided with pyrocondensation insulation tube outside the clamping screw 440, it is described
Pyrocondensation insulation tube is arranged between the clamping screw 440 and the piezoelectric vibrator 420, cover board 430.
In any of the above-described technical solution, further, the second end of the ultrasonic wave cutter hub 100 is equipped with installation cavity
110, the piezoelectric vibrator 420 is located in the installation cavity 110.
In any of the above-described technical solution, further, the radio transceiver device 300 includes receiving ring support
310, magnetic core and receiving coil are received;
The reception ring support 310 is set in the outside of the ultrasonic wave cutter hub 100, sets on the reception ring support 310
There is third mounting groove 311, the reception magnetic core is mounted in the third mounting groove 311, and the reception magnetic core is equipped with the 4th
Mounting groove 321, the receiving coil 330 are mounted in the 4th mounting groove.
The third mounting groove 311 offers the second connection jaws on the internal groove side wall for receiving 310 center of ring support
312, the 4th mounting groove 321 offers third connection jaws 322 on the internal groove side wall for receiving 310 center of ring support,
And the position of the third connection jaws 322 is corresponding with the position of second connection jaws 312.To the wiring of receiving coil 330
It can be introduced in the hollow structure for receiving ring support 310, be convenient for and ultrasound by third connection jaws 322, the second connection jaws 312
420 wiring of piezoelectric vibrator in wave cutter hub 100, easy-to-connect, and wiring are carried out from inside, being capable of effective protection wiring.Wirelessly
The wiring of transmission reception device 200 is worn from the cable-through hole 130 on ultrasonic wave cutter hub 100.
Receiving magnetic core 320 can incude with the transmitting magnetic core of wireless transmission emitter, thus play the role of wireless receiving,
The magnetic field sensed is reduced into high-frequency electrical energy signal and is transferred to piezoelectric vibrator 420.Optionally, the reception magnetic core 320 is to connect
Receive ferrite.
In any of the above-described technical solution, further, the outer wall of the ultrasonic wave cutter hub 100 is equipped with positioning convex platform
120, the positioning convex platform 120 is for positioning the radio transceiver device 300.It is fixed that positioning convex platform 120 can play installation
The effect of position, radio transceiver device 300 can be directly mounted at positioning convex platform 120, without adjusting installation position repeatedly
It sets, easy for installation, easy to operate, installation effectiveness is high.
Knife assembly further includes machine tool chief axis, and the ultrasonic wave cutter hub 100 is arranged on the machine tool chief axis.
It further include emitting signal to the radio transceiver device 300 further in any of the above-described technical solution
Wireless transmission emitter, the wireless transmission emitter is mounted on the machine tool chief axis, with ultrasonic-frequency power supply generator
Connection.
In use, 621 one side of chip space plays the role of heat dissipation, another aspect rises ultrasonic wave provided by the utility model
To the effect of discharge grindstone dust, the service life of grinding part 620 is extended while ensureing grinding quality;The slot of chip space 621
Mouthful place formed cutting edge 622 workpiece surface high point can be cut, thus play buffering cutterhead body 610 and workpiece it
Between cutting collision, ensure the processing quality of workpiece.
In conclusion the balancing loop is arranged in the ultrasound in ultrasonic wave cutter head assembly provided by the utility model
On wave cutter hub or the amplitude transformer, the interconnecting piece is connect with the amplitude transformer, offers chip space on the grinding part.Pass through
It is provided with balancing loop in amplitude transformer or ultrasonic wave cutter hub, cutterhead is provided in amplitude transformer, chip removal is offered on cutterhead
Slot balances and is used in conjunction with balancing loop chip space chip removal, has the advantages that cutter head assembly balance is good and production cost is low etc..
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System;Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced;And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.In addition, it will be appreciated by those of skill in the art that although some implementations described herein
Example includes certain features included in other embodiments rather than other feature, but the group of the feature of different embodiments is desirable
Taste within the scope of the utility model and form different embodiments.For example, in claims above, institute
Claimed embodiment it is one of any can in any combination mode come using.It is disclosed in the background technology part
Information is merely intended to deepen the understanding to the general background technology of the utility model, and is not construed as recognizing or with any shape
Formula implies that the information constitutes the prior art known to those skilled in the art.