A kind of equipment and its process for expansion fiber beam
Technical field
The present invention relates to industrial fiber processing equipment field more particularly to a kind of equipment and its work for expansion fiber beam
Process.
Background technique
With the manufacturing development of the high-tech such as aerospace, wind-powered electricity generation, new automobile and mature, relevant material application skill
Art such as carbon fibre material technology also achieves significant progress therewith and is widely applied.In practical applications, due to big silk
Beam carbon fiber, such as 48K, 60K so that 360K, 480K price than small tow it is cheap very much, big tow price only has
The 50%-60% of small tow, so be easier to be received by the producer, but since large-tow carbon fiber exists with fibre bundle
Radical increases and there is a phenomenon where the complications of fiber, kink, and resin matrix is not easy inside infiltration to big bunch fiber beam, single
It is easy to produce hole between silk, and be easy to cause the defects of enrichment of fiber phase and resin phase is with separating, while can be with strand diameters
A possibility that increasing, occurring fiber buckling and laying angular misalignment in composite material shaping process is also increasing, to make multiple
Condensation material intensity, rigidity are impacted, and mechanical property reduces, dispersibility is big, are not able to satisfy the requirement of structure design, can not play carbon
Fibre reinforced materials high-performance benefits, therefore break through inexpensive large-tow carbon fiber performance high-performance benefits key technology and be exactly out
Send out large-tow carbon fiber expansion technique.
In addition either carbon fiber prepreg or carbon fibre fabric, fabric is thinner, and mass area ratio is smaller, object
Reason aberrations in property is smaller, and mechanical property is more excellent.Because the product that more frivolous carbon fiber produces just can be more frivolous, and performance
More preferably, so even if not being higher to mechanical property requirements using producer, to before sales carbon fiber bundle and weaving before
Carbon fiber bundle generally will be by opening up fine process.
It is mainly at present hot milling process to the exhibition fibre of carbon fiber, that is, passes through the cord roller or pressure roller of heating.Pass through heat effect
Melt sizing agent, while it is thinning so that carbon fiber bundle is flattened by the squeezing action of cord roller or pressure roller.Such method exhibition fibre
Carbon fiber mechanical properties decrease is larger, and is easy to cause to wear to fibre bundle, has seriously affected the use of carbon fiber, simultaneously
Such method speed is slower, and efficiency is lower.
Ultrasonic wave can produce acoustic cavitation effect, can generate the percussive pressure of moment, cause the high-speed motion of molecule, commonly use
To handle the surface property with modified fiber materials.This patent, which uses, imports carbon fiber bundle equipped with supersonic generator and chemistry
In the container of solution, pass through the draft speed to ultrasonic frequency range, solution type and concentration, carbon fiber bundle in the solution
Control, makes carbon fiber bundle become more frivolous, it is more preferable to open up fine effect, while designing by mechanical equipment, overcomes existing similar to setting
Standby the shortcomings that can only extending mass of fibers simultaneously, improve production efficiency.
Summary of the invention
The object of the present invention is to provide a kind of equipment and its process for expansion fiber beam.
The technical solution of the present invention is as follows: a kind of equipment for expansion fiber beam, it is characterised in that: including decoiling equipment,
Extend tank systems, traction and drying unit and wrap-up;
The decoiling equipment includes silk ingot support frame and draws a support frame, and the silk ingot support frame top is equipped with two pieces of spools
Fixed plate is fixedly connected with silk ingot support frame, and any roller fixed plate is equipped with several spools, living with spool fixed plate
Dynamic connection, described any roller one end are equipped with damping controller, connect with spool activity, if a support frame side of drawing is equipped with
Dry locating shaft is fixedly connected with a support frame is drawn, it is described draw several horizontal brackets are equipped in the middle part of a thread support frame, and draw a support frame
It is fixedly connected, any horizontal bracket top is equipped with several anti-canting axis, is flexibly connected with horizontal bracket, the anti-canting axis
Quantity is identical as the spool quantity, and any horizontal bracket top is additionally provided with several tension monitoring devices, the tension prison
Survey device quantity is identical as the spool quantity, and the tension monitoring device includes fixed plate, and the fixed plate top is equipped with three
A support shaft, is flexibly connected with fixed plate, and monitoring roller is equipped with outside any support shaft, is connected with support shaft by set screw
It connects, pressure sensor is equipped in the middle part of the support shaft, is flexibly connected with support shaft, set between the pressure sensor and monitoring roller
There is supporting pad, the supporting pad is fitted closely with pressure sensor and monitoring roller, and the fixed plate lower part is equipped with data collector,
It is flexibly connected with fixed plate, the fixed plate is fixedly connected with horizontal bracket;
The extension tank systems include liquid bath, hang a liter frame, it is described hang liter frame top and be equipped with hang lifting motor, and hang a liter frame activity
Connection, it is described hang lifting motor two sides and be respectively provided with one hang a liter pulley, is flexibly connected with a liter frame is hung, equipped with roller inside the liquid bath
Frame is flexibly connected with liquid bath, and the roller frame side is equipped with several roller struts, is flexibly connected with roller frame, the roller frame
Inside is equipped with several rollers, is flexibly connected with roller strut, and the lifting motor that hangs is connected with several lifting ropes, any lifting rope it is another
One end is flexibly connected with roller frame, and the liquid bath bottom is equipped with several ultrasonic launching heads, the roller branch of the roller frame two sides
Bar is to correspond arrangement, and two rollers are equipped between any one group of corresponding roller strut, are equipped with inside the liquid bath several
Temperature sensor, the liquid bath inside are equipped with several liquid level sensors;
The traction and drying unit include traction device and drying unit, the traction device include rack, front apron,
Rear baffle, driving mechanism, godet, driven gear, tow metrological service, the godet are hollow structure, the godet
One end is fixedly connected with driven gear, and the front apron, rear baffle be individually fixed in front of the rack, below, and described
Rack constitutes seal wire space, and the driving mechanism includes motor and retarder, and the motor passes through shaft coupling and the retarder
Connection, the retarder output end are connect with the driving gear, and the direction of motor rotation is consistent with tow direction of advance, institute
It states godet to be made of the first godet, the second godet, third godet, the 4th godet, the 5th godet, accordingly quilt
Moving gear is respectively first gear, second gear, third gear, the 4th gear, the 5th gear, first godet, second
Godet, third godet both ends are parallel to each other the top being set up in the seal wire space by front apron, rear baffle, described
4th godet, the 5th godet both ends are parallel to each other the lower part being set up in the seal wire space by front apron, rear baffle,
The driving mechanism is set in the rack on the outside of the front apron, and is fixedly connected with a driving gear, the driving gear and institute
It states the 4th gear or the engagement of the 5th gear, the 4th gear is engaged with first gear, second gear respectively, the 5th gear
It is engaged respectively with second gear, third gear, the first gear, second gear, third gear are mutually indepedent, the 4th tooth
Wheel, the 5th gear are mutually indepedent, and the tow metrological service is set in the rack on the outside of the rear baffle, are rotated by godet
Conversion calculates tow advance size, and the driven gear periphery is erected with shutter, the shutter and the fixed company of the rack
It connects, the drying unit includes heater box, transfer roller, heating in medium frequency roller, positioning screw, frequency heating device, driving motor, cold
But device, heating coil, shaft joint, sleeve, controller, magnetic core stick and inlet and outlet pipes form, and the heating in medium frequency roller is set to
In heater box, the heater box side is provided with positioning screw, and heating in medium frequency roller two sides are provided with transfer roller, the intermediate frequency
Heating roller includes sleeve and frequency heating device, and the frequency heating device is set in sleeve, in the frequency heating device
It is provided with heating coil, the heating coil is fixedly installed in magnetic core stick, and the lower end of the heating coil and heating in medium frequency fill
Controller in setting is connected with each other, and the controller lower end is provided with shaft joint, and the shaft joint lower end is provided with driving motor,
Controller is connected with each other by shaft joint and driving motor, and the heating coil side is provided with cooling device, the cooling dress
It sets side and is provided with inlet and outlet pipes, the cooling device is mutually permanently connected with inlet and outlet pipes;
The wrap-up includes rolling frame, the rolling frame include winding frame, support base, deviation correcting device, cant beam,
Connect electric wire, envelope curve bar, warning lamp, motor, display screen, suspension arm, connecting shaft, controller, touch screen, control button, the
One support column, support plate, the second support column and wrap-up form, and the winding frame lower end is provided with support base, described
Support base is mutually permanently connected with winding frame, and cant beam is provided in the winding frame, and the cant beam side is provided with electricity
Motivation, motor lower end are provided with the first support column, and the first support column is mutually permanently connected with winding frame, on the motor
It is provided with display screen, motor side is provided with warning lamp, and the warning lamp is connected with each other by connection electric wire and motor, institute
It states and is provided with envelope curve bar outside connection electric wire, motor upper end is provided with suspension arm, and the suspension arm lower end is provided with controller, control
It is provided with touch screen on device processed, is provided with control button below touch screen, connection is provided between the suspension arm and controller
Axis, suspension arm and controller are connected with each other by connecting shaft, are provided with deviation correcting device on the cant beam, the deviation correcting device with it is oblique
Beam is mutually permanently connected, and deviation correcting device side is provided with the second support column, the second support column lower end and is set in winding frame
Support plate is mutually permanently connected, and the deviation correcting device includes driving around belt wheel, Scroll, locating wheel, the first drive motor, second
Drive motor, transfer roller, automatic deviation rectifying mechanism, driving winding tape apparatus and winding frame form, and are provided in the winding frame
Automatic deviation rectifying mechanism, the automatic deviation rectifying mechanism are made of fixed plate, laser sensor, tension sensor, guide wheel and mounting plate,
Fixation hole is provided on described mounting plate one end, the mounting plate other end is provided with fixed plate, is provided in the fixed plate
Tension sensor, tension sensor are mutually permanently connected with fixed plate, and laser sensor is provided in the fixed plate, described to swash
Optical sensor is mutually permanently connected with fixed plate, and there are two guide wheel, the guide wheel and mounting plate phases for the setting of laser sensor side
It is mutually fixedly connected, the automatic deviation rectifying mechanism side is provided with driving winding tape apparatus, and the driving winding tape apparatus lower end is provided with
Around belt wheel, the driving is provided with Scroll around belt wheel lower end for driving, and the Scroll upper end is provided with locating wheel, under Scroll
End is provided with the first drive motor and the second drive motor, and the locating wheel upper end is provided with transfer roller.
Further, described to extend the ultrasonic frequency that ultrasonic launching head occurs in tank systems for 45MHz-315MHz, in slot
Solution temperature is 45 DEG C -55 DEG C, and the solution composition in liquid bath includes technical grade pure water, sizing liquor, setting agent.
Further, the damping controller is magnetic powder motor, and the spool quantity is no less than two, and is put down between each spool
Row arrangement.
Further, the roller strut of the roller frame two sides is to correspond arrangement, any one group of corresponding roller strut
Between be equipped with two rollers.
Further, the touch screen on controller can be monitored whole equipment, including check any tension monitoring dress
The tension situation at place is set, the tractive force size that traction device generates is adjusted, the reaction force adjusted at any damping controller is big
Machine is promptly stopped in small and control.
Further, the drying unit power is 45W, and the heating in medium frequency roller heating temperature is 140 DEG C -150 DEG C.
Further, a kind of process for expansion fiber beam, step 1, more ingot silks by surface no-pollution without fracture
Beam disk is sequentially arranged on the spool of decoiling equipment;
Tow is drawn from tow disk respectively, bypasses corresponding anti-canting axis and tension monitoring device respectively by step 2;
Step 3 determines stroke of the tow in the liquid bath of extension tank systems according to the width that tow need to extend, and right
It is wound on the roller answered;
Roller frame is put into liquid bath by step 4, and tow is bypassed heating in medium frequency roller and traction device;
Tow is passed through deviation correcting device, and accesses wrap-up by step 5;
Step 6, booting, trial operation;
Step 7, the tension of each synnema beam is monitored by touch screen, and adjusts traction device and every synnema beam is corresponding
Wrap-up and damping controller are held at the tension of every synnema beam in critical field the active force of tow;
Step 8, equipment operate normally.
The beneficial effects of the present invention are: more ingot fibre bundle disks are installed on spool when use, tow is passed through and is expanded
Tow is simultaneously wound in roller according to the difference of tow extension width by exhibition tank systems, and tow is bypassed drying unit later, and with 8
Word winding method bypasses traction device, and finally by rolling frame is accessed after deviation correcting device, tow is in extension tank systems after equipment starting
In liquid bath inside by ultrasound expansion after, by drying after wound, in equipment running process, operator can benefit
Whole equipment is monitored with the touch screen on controller, including checking the tension situation at any tension monitoring device, is adjusted
The tractive force size that whole traction device generates, adjusts the reaction force size at any damping controller and control is promptly stopped
Machine.Carbon fiber bundle can be made to become more frivolous by the processing of this equipment, it is more preferable open up fine effect, while setting by mechanical equipment
Meter, overcomes the shortcomings that existing similar devices can only extend mass of fibers simultaneously, improves production efficiency.
Detailed description of the invention
Fig. 1 is main view of the invention.
Fig. 2 is the main view of uncoiling part of the present invention.
Fig. 3 is the main view of tension monitoring device of the present invention.
Fig. 4 is the top view of tension monitoring device of the present invention.
Fig. 5 is the cross-sectional view of present invention monitoring roller segment
Fig. 6 is the main view of present invention extension slot part.
Fig. 7 is that expansion slot segment cylinder frame of the present invention hangs the schematic diagram after rising.
Fig. 8 is the top view of present invention extension slot part liquid bath.
Fig. 9 is the main view of drying unit of the present invention.
Figure 10 is the top view of drying unit of the present invention.
Figure 11 is the main view of traction device of the present invention.
Figure 12 is the A direction view of Figure 11 traction device of the present invention.
Figure 13 is the main view of rolling frame part of the present invention.
Figure 14 is the top view of deviation correcting device of the present invention.
Figure 15 is deviation correcting device structural schematic diagram of the present invention.
Specific embodiment
Brief description is made to a specific embodiment of the invention with reference to the accompanying drawing.
A kind of equipment for expansion fiber beam as shown in the figure, it is characterised in that: including decoiling equipment 1000, expansion slot system
System 2000, traction and drying unit 3000 and wrap-up 4000;
The decoiling equipment 1000 is including silk ingot support frame 1001 and draws a support frame 1008, the silk ingot support frame 1001
Top is equipped with two pieces of spool fixed plates 1002, is fixedly connected with silk ingot support frame 1001, in any roller fixed plate 1002
It equipped with several spools 1003, is flexibly connected with spool fixed plate 1002, described 1003 one end of any roller is equipped with damping control
Device is flexibly connected with spool 1003, and a support frame and is drawn equipped with several locating shafts 1004 in 1008 side of a support frame of drawing
1008 are fixedly connected, described to draw equipped with several horizontal brackets 1005 in the middle part of a support frame 1008, fixed with a support frame 1008 is drawn
Connection, any 1005 top of horizontal bracket is equipped with several anti-canting axis 1006, is flexibly connected with horizontal bracket 1005, described
1006 quantity of anti-canting axis is identical as 1003 quantity of spool, and any 1005 top of horizontal bracket is additionally provided with several tension
Monitoring device 1100, the tension monitoring device quantity is identical as 1003 quantity of spool, and the tension monitoring device includes
Fixed plate 2102,2102 top of fixed plate sets there are three support shaft 2107, is flexibly connected with fixed plate 2102, described any
It is equipped with monitoring roller 2101 outside support shaft 2107, is connect with support shaft 2107 by set screw 21 04, the support shaft 2107
Middle part is equipped with pressure sensor 2106, is flexibly connected with support shaft 2107, the pressure sensor 2106 with monitor roller 2101 it
Between be equipped with supporting pad 2105, the supporting pad 2105 and pressure sensor 2106 and monitor roller 2101 and fit closely, the fixation
2102 lower part of plate is equipped with data collector 2103, is flexibly connected with fixed plate 2102, the fixed plate 2102 and horizontal bracket
1005 are fixedly connected;
The extension tank systems 2000 include liquid bath 2001, hang liter frame 2002, it is described hang 2002 top of liter frame and be equipped with hang liter
Motor 2005 is flexibly connected with liter frame 2002 is hung, it is described hang 2005 two sides of lifting motor and be respectively provided with one hang liter pulley 2004, and hang
It rises frame 2002 to be flexibly connected, roller frame 2006 is equipped with inside the liquid bath 2001, is flexibly connected with liquid bath 2001, the roller frame
2006 sides are equipped with several roller struts 2007, are flexibly connected with roller frame 2006, are equipped with inside the roller frame 2006 several
Roller 2008 is flexibly connected with roller strut 2007, and the lifting motor 2005 that hangs is connected with several lifting ropes 2003, any lifting rope
2003 other end is flexibly connected with roller frame 2006, and 2001 bottom of liquid bath is equipped with several ultrasonic launching heads 2009, institute
The roller strut 2007 of 2006 two sides of roller frame is stated to correspond arrangement, is set between any one group of corresponding roller strut 2007
There are two rollers 2008, if being equipped with dry temperature sensor 2010 inside the liquid bath 2001, if being equipped with inside the liquid bath 2001
Dry liquid level sensor 2011;
The traction and drying unit 3000 include traction device 3100 and drying unit 3200, the traction device 3100
Including rack 3101, front apron 3102, rear baffle 3103, driving mechanism 3104, godet 3105, driven gear 3106, tow
Metrological service 3107, the godet 3105 are hollow structure, described 3105 one end of godet and the fixed company of driven gear 3106
It connects, the front apron 3102, rear baffle 3103 are individually fixed in front of the rack 3101, below, with the rack 3101
Seal wire space 3108 is constituted, the driving mechanism 3104 includes motor 3120 and retarder 3121, and the motor 3120 passes through connection
Axis device is connect with the retarder 3121, and 3121 output end of retarder is connect with the driving gear 3119, the motor
3120 rotation directions are consistent with tow direction of advance, the godet 3105 by the first godet 3109, the second godet 3110,
Third godet 3111, the 4th godet 3112, the 5th godet 3113 are constituted, and corresponding driven gear 3106 is respectively first
Gear 3114, second gear 3115, third gear 3116, the 4th gear 3117, the 5th gear 3118, first godet
3109, the second godet 3110,3111 both ends of third godet are parallel to each other and are set up in by front apron 3102, rear baffle 3103
Top in the seal wire space 3108, the 4th godet 3112,3113 both ends of the 5th godet by front apron 3102,
Rear baffle 3103 is parallel to each other the lower part being set up in the seal wire space 3108, and the driving mechanism 3104 is set to the front
In the rack 3101 in 3102 outside of plate, and it is fixedly connected with a driving gear 3119, the driving gear 3119 and the 4th tooth
Wheel 3117 or the 5th gear 3118 engage, and the 4th gear 3117 is engaged with first gear 3114, second gear 3115 respectively,
5th gear 3118 is engaged with second gear 3115, third gear 3116 respectively, the first gear 3114, second gear
3115, third gear 3116 is mutually indepedent, and the 4th gear 3117, the 5th gear 3118 are mutually indepedent, the tow metering
Mechanism 3107 is set in the rack 3101 in 3103 outside of rear baffle, is rotated conversion calculating tow by godet 3105 and is advanced
Size, 3106 periphery of driven gear are erected with shutter 3122, the shutter 3122 and the fixed company of the rack 3101
It connects, the drying unit 3200 includes heater box 3201, transfer roller 3202, heating in medium frequency roller 3203, positioning screw 3204, intermediate frequency
Heating device 3205, driving motor 3206, cooling device 3207, heating coil 3208, shaft joint 3209, sleeve 3210, control
Device 3211, magnetic core stick 3212 and inlet and outlet pipes 3213 form, and the heating in medium frequency roller 3203 is set in heater box 3201, described
3201 side of heater box is provided with positioning screw 3204, and 3203 two sides of heating in medium frequency roller are provided with transfer roller 3202, described
Heating in medium frequency roller 3203 includes sleeve 3210 and frequency heating device 3205, and the frequency heating device 3205 is set to sleeve
In 3210, heating coil 3208 is provided in the frequency heating device 3205, the heating coil 3208 is fixedly installed on magnetic
On plug 3212, the lower end of the heating coil 3208 and the controller 3211 in frequency heating device 3205 are connected with each other, institute
It states 3211 lower end of controller and is provided with shaft joint 3209,3209 lower end of shaft joint is provided with driving motor 3206, controller
3211 are connected with each other by shaft joint 3209 and driving motor 3206, and 3208 side of heating coil is provided with cooling device
3207,3207 side of cooling device is provided with inlet and outlet pipes 3213, the cooling device 3207 and 3213 phase of inlet and outlet pipes
Mutually it is fixedly connected;
The wrap-up 4000 includes rolling frame 4200, and the rolling frame 4200 includes winding frame 4201, support bottom
Seat 4202, cant beam 4204, connection electric wire 4205, envelope curve bar 4206, warning lamp 4207, motor 4208, is shown deviation correcting device 4100
Display screen 4209, suspension arm 4210, connecting shaft 4211, controller 4212, touch screen 4213, control button 4214, the first support column
4215, support plate 4216, the second support column 4217, back support rod 4203 and wrap-up 4218 form, the winding frame
4201 lower ends are provided with support base 4202, and the support base 4202 is mutually permanently connected with winding frame 4201, the receipts
It is provided with cant beam 4204 in volume rack 4201,4204 side of cant beam is provided with motor 4208, and 4208 lower end of motor is set
It is equipped with the first support column 4215, the first support column 4215 is mutually permanently connected with winding frame 4201, on the motor 4208
Be provided with display screen 4209, motor side is provided with warning lamp 4207, the warning lamp 4207 by connection electric wire 4205 with
Motor 4208 is connected with each other, and is provided with envelope curve bar 4206 outside the connection electric wire 4205,4208 upper end of motor is provided with outstanding
Boom 4210,4210 lower end of suspension arm are provided with controller 4212, touch screen 4213, touch-control are provided on controller 4212
4213 lower section of screen is provided with control button 4214, is provided with connecting shaft 4211 between the suspension arm 4210 and controller 4212,
Suspension arm 4210 is connected with each other with controller 4212 by connecting shaft 4211, is provided with deviation correcting device on the cant beam 4204
4100, the deviation correcting device 4100 is mutually permanently connected with cant beam 4204, and 4100 side of deviation correcting device is provided with the second support column
4217,4217 lower end of the second support column is mutually permanently connected with 4201 upper backup pad 4216 of winding frame is set to, the correction
Device 4100 includes driving around belt wheel 4101, Scroll 4102, locating wheel 4103, the first drive motor 4104, second driving horse
It is formed up to 4105, transfer roller 4106, automatic deviation rectifying mechanism 4107, driving winding tape apparatus 4108 and winding frame 4109, the receipts
It is provided with automatic deviation rectifying mechanism 4107 in volume rack 4109, the automatic deviation rectifying mechanism 4107 is by fixed plate 4110, laser sensing
Device 4111, tension sensor 4112, guide wheel 4113 and mounting plate 4114 form, and are provided with fixation on described 4114 one end of mounting plate
Hole 4115,4114 other end of mounting plate are provided with fixed plate 4110, are provided with tension sensor in the fixed plate 4110
4112, tension sensor 4112 is mutually permanently connected with fixed plate 4110, is provided with laser sensor in the fixed plate 4110
4111, the laser sensor 4111 is mutually permanently connected with fixed plate 4110, and there are two the settings of 4111 side of laser sensor
Guide wheel 4113, the guide wheel 4113 are mutually permanently connected with mounting plate 4114, and 4107 side of automatic deviation rectifying mechanism is provided with
Winding tape apparatus 4108 is driven, 4108 lower end of driving winding tape apparatus is provided with driving around belt wheel 4101, and the driving is around belt wheel
4101 lower ends are provided with Scroll 4102, and 4102 upper end of Scroll is provided with locating wheel 4103, and 4102 lower end of Scroll is set
It is equipped with the first drive motor 4104 and the second drive motor 4105,4103 upper end of locating wheel is provided with transfer roller 4106.
Working method: more ingot fibre bundle disks are installed on spool 1003 when use, tow is extended through tank systems
2000 and tow is wound in by roller 2008 according to the difference of tow extension width, tow is bypassed into drying unit 3200 later,
And traction device 3100 is bypassed with 8 word winding methods, finally by access rolling frame 4100 after deviation correcting device 4200, after equipment starting
Tow after ultrasound expansion, is wound, in equipment inside the liquid bath 2001 in extension tank systems 2000 after drying
In operational process, operator can use the touch screen 4213 on controller 4212 and be monitored to whole equipment, including look into
See that the tension situation at any tension monitoring device 1100, the tractive force size that adjustment traction device 3100 generates adjust any
Reaction force size and control at damping controller 1007 promptly stop machine.
One embodiment of the present invention has been described in detail above, but the content is only preferable implementation of the invention
Example, should not be considered as limiting the scope of the invention.It is all according to all the changes and improvements made by the present patent application range
Deng should still be within the scope of the patent of the present invention.