CN203728872U - Core spun yarn forming equipment provided with accurate powder blanking amount control device - Google Patents

Core spun yarn forming equipment provided with accurate powder blanking amount control device Download PDF

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Publication number
CN203728872U
CN203728872U CN201420101287.2U CN201420101287U CN203728872U CN 203728872 U CN203728872 U CN 203728872U CN 201420101287 U CN201420101287 U CN 201420101287U CN 203728872 U CN203728872 U CN 203728872U
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CN
China
Prior art keywords
powder
cored
control device
wire
precise control
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CN201420101287.2U
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Chinese (zh)
Inventor
孙永义
李希骏
冯涛
孙振蛟
张燕龙
韩林林
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BEIJING SHOUGANG FERROALLOY Co Ltd
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BEIJING SHOUGANG FERROALLOY Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency

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  • Treatment Of Steel In Its Molten State (AREA)

Abstract

The utility model relates to core spun yarn forming equipment provided with an accurate powder blanking amount control device. The core spun yarn forming equipment comprises a mainframe, a rewinding machine, an operation platform and a belt release tray, wherein the accurate powder blanking amount control device is mounted at the blanking part of the mainframe and comprises a stock bin, a powder blanking channel, a material level detection device and a powder flow control device; a material level sensor is arranged on the stock bin and connected with a computer through a converter; and a solid flow sensor is arranged on the powder blanking channel and connected with the computer through a transmitter. The core spun yarn forming equipment can control the powder blanking amount accurately, so that the weight of powder in the core spun yarn per meter keeps a fixed value, the weight of powder in the whole produced core spun yarn is uniform and consistent, the prepared core spun yarn is round and smooth, the folded edge is flat and smooth, and the qualified rate can be greatly increased when the alloy core spun yarn is adopted by a steel mill for alloy steel refinement.

Description

With the cored-wire molding device of powder dropping amount precise control device
Technical field
The utility model relates to design and the manufacture field of metallurgical molding device, relates in particular to design and manufacture with the cored-wire molding device of powder dropping amount precise control device.
Background technology
Ladle feeding line processing is the one in the many technology of external refining, and its fine setting to molten steel, alloying, deoxidation, removal of inclusions etc. have unique effect.Wire-feeding technique is first will to want to add various additives in molten steel and iron liquid (as reductor, sweetening agent, alterant, alloy etc.) be broken into certain granularity, then with cold-rolled low carbon steel band, its parcel is become to a matrix material with random length, it is usually said cored-wire, then by means of feeding wire machine, make the cored-wire of specified length pass slag blanket with certain speed, and arrival is equipped with near the ladle of molten steel or iron liquid or the bottom of iron liquid bag, along with cored-wire is in the continuous fusing at this place, the additive being wrapped in by it also will constantly be melted and enter in molten steel or iron liquid.By additive and its interaction of molten steel or iron liquid around, reach processed liquation is carried out to deoxidation, desulfurization, microalloying, trimming and rotten processing, improve the use properties of metal to be treated, improve the objects such as its cleanliness factor.
Cored-wire is by means of shaping equipment, i.e. core cabling wire machine, with cold-rolled low carbon steel band parcel alloy powder or other alloy additions, form one columnedly there is random length, composition is even, has the matrix material of certain degree of packing, i.e. cored-wire.
At present, the bag powder rate of producing the cored-wire unit of cored-wire is difficult to reach standard, the pulvis that a variety of causes causes cored-wire to wrap is inhomogeneous, on same cored-wire, some positions bag pulvis amount is higher, makes outer field steel band discount limit not firm or not tight, and some positions bag pulvis amount is on the low side, make not circle, discount limit projection of cored-wire, the position even having is seriously to lose powder ceases to be busy.Steel mill is in the time being used this alloy claded wire refined alloy steel, and disqualification rate can improve greatly.
Summary of the invention
For solving the technical problem of above-mentioned existence, the utility model provides a kind of cored-wire molding device with powder dropping amount precise control device, comprises main frame, rewinding machine, operator's console and puts band pallet.The blanking position of described main frame is provided with powder dropping amount precise control device.
Cored-wire molding device of the present utility model can accurately be controlled powder dropping amount, make the weight of pulvis in every meter of cored-wire keep certain value, and then make the weight uniformity of pulvis in whole produced cored-wire, prepared cored-wire rounding, discount limit are smooth, steel mill is in the time being used this alloy claded wire refined alloy steel, and qualification rate can improve greatly.
Preferably, described powder dropping amount precise control device comprises feed bin, lower powder passage, material-level detecting device and powder stream amount control device.Material-level detecting device is for detection of the amount of pulvis in feed bin, and powder stream amount control device is for controlling the flow of pulvis in lower powder passage, to ensure that in cored-wire, the weight of pulvis is even.In feed bin pulvis number directly affect the flow of powder, if when in feed bin, the amount of pulvis is moderate, the flow of powder is also moderate, if the amount of pulvis is excessive in feed bin, easily stop up lower powder passage powder inlet and meal outlet, powder circulation is had some setbacks, hindered, if the amount of pulvis is too small in feed bin, the flow of powder can be unstable.
In above-mentioned arbitrary scheme, preferably, described material-level detecting device comprises level sensing transducer, digital to analog converter and computer.
In above-mentioned arbitrary scheme, preferably, described level sensing transducer is proximity transducer.Proximity transducer can detect the target compound near sensor in the situation that not contacting with target compound is actual, and it can replace the contact measurement modes such as limit switch.In proximity transducer, have an oscillatory circuit, the coil in oscillatory circuit can produce high frequency magnetic field, and in the time that pulvis approaches magnetic field, electromagnetic induction produces induced current, i.e. an eddy current in pulvis.Along with pulvis is near proximity transducer, induced current strengthens, and causes that the load in oscillatory circuit strengthens, and then oscillations is until stop, proximity transducer utilizes amplitude detecting circuit the variation of oscillatory regime to be detected, and exports the material level detection signal of pulvis in feed bin.Contact pickup has many good qualities: detect with cordless, avoided the damage to sensor self and target compound; Be not affected by the ambient temperature, the in the situation that of any temperature range, can detect; Under the environment that has water or oily splash, also can carry out stable detection; Speed of response is fast.
In above-mentioned arbitrary scheme, preferably, described level sensing transducer is arranged on feed bin, and level sensing transducer is connected with computer by digital to analog converter.Level sensing transducer is installed on feed bin, and in order to the residing position of pulvis in online detection feed bin, general charge level position is moderate in 1/4~3/4 location comparison of the feed bin degree of depth, and material level is higher or on the low side, all can cause the unstable of pulvis flow.Level sensing transducer by the material level signal representation detecting out, and being transferred to digital to analog converter, material level signal is worked out as the discernible digital code information of computer by digital to analog converter, then by digital-to-analog conversion, convert material level analog image to, and by Computer display out.By the material level analog image showing on computers, can detect online the amount of the interior residing position of pulvis of feed bin or pulvis, to ensure that the material level of pulvis in feed bin keeps moderate state.
In above-mentioned arbitrary scheme, preferably, described material-level detecting device also comprises rly. and warning light.
In above-mentioned arbitrary scheme, preferably, described level sensing transducer is connected with rly., and rly. is connected with warning light.In the time that the material level of pulvis in feed bin exceeds the scope of requirement, warning light is bright, and sends guard signal, adds in time or reduce the pulvis in feed bin with the operator that point out factory.When warning light sends guard signal, operator must push the danger button of platform, make whole cored-wire unit out of service, otherwise when the material level of pulvis is not in claimed range in feed bin, and main frame is also in operation, will cause the pulvis amount of steel band parcel inhomogeneous.
In above-mentioned arbitrary scheme, preferably, described powder stream amount control device comprises solid flow sensor, transmitter and computer.
In above-mentioned arbitrary scheme, preferably, described solid flow installation of sensors is on lower powder passage, and solid flow sensor is connected with computer by transmitter.On lower powder passage, solid flow sensor is installed, for the online flow that detects pulvis.At present, conventional is silicocalcium cored-wire, and requiring the quality of pulvis in every meter of cored-wire is 220g.Pulvis in the downward powder passage of solid flow sensor is launched low-yield microwave signal, and signal is received by solid flow sensor again after being reflected by pulvis.Solid flow sensor by the signal representation receiving out, and is transferred to transmitter, and transmitter is connected with computer, and the measurement signals of measuring output is shown on computers.On computers, in lower powder passage, the flow of pulvis is expressed with the form of curve, and powder stream discharge curve should remain on same sea line as best.Through VB Programming with Pascal Language, pulvis flow can be exchanged into the quality of pulvis in every meter of cored-wire, and directly shows with the form of curve on computers, and the operator of being convenient to like this factory can monitor the quality change situation of pulvis in cored-wire in time.At present, conventional silicocalcium cored-wire, taking 220g/m as optimum value, adopts after powder dropping amount precise control device of the present utility model, and error can be controlled at 0.1-0.9g/m.
For making the content of pulvis in cored-wire meet the demand of 220g/m, should in advance the shape of the volume of the length of lower powder passage, feed bin, lower powder passage powder inlet and meal outlet and the gap of size, lower powder passage meal outlet and steel band, the travelling speed of steel band be carried out to appropriate design.Blanking position at main frame can arrange lifting device, for regulating the height of powder dropping amount precise control device, is convenient to accurately and reasonably control the powder dropping amount of cored-wire.
In above-mentioned arbitrary scheme, preferably, described feed bin is connected with lower powder passage by flange.
In above-mentioned arbitrary scheme, preferably, one end that described lower powder passage is connected with feed bin is lower powder passage powder inlet, and the other end of lower powder passage is lower powder passage meal outlet.
In above-mentioned arbitrary scheme preferably, the plane at described lower powder passage powder inlet place and the plane parallel at lower powder passage meal outlet place.
In above-mentioned arbitrary scheme, preferably, described lower powder passage powder inlet and lower powder passage meal outlet are on same axis.
In above-mentioned arbitrary scheme, preferably, described axis is vertical with the plane at lower powder passage meal outlet place with lower powder passage powder inlet.
The plane parallel at powder inlet and meal outlet place, two powder mouths are on same axis, axis is vertical with the plane at two powder mouth places, and to guarantee that powder inlet and meal outlet are just right, from powder inlet flows into, the pulvis of powder passage can flow to meal outlet swimmingly.
In above-mentioned arbitrary scheme preferably, described lower powder passage powder inlet and lower powder passage meal outlet be shaped as circle, rectangle or square.No matter two powder mouths be shaped as circle, rectangle or square, the pulvis flowing out from meal outlet all can be filled into steel band, steel band during through the blanking position of main frame, has been deformed into the shape of groove, U-shaped.When meal outlet is circular, circular diameter is not more than the width of slot opening; When meal outlet is rectangle, rectangular long limit should be along the length direction of steel band, and rectangular width is not more than the width of slot opening; When meal outlet is square, the foursquare length of side is not more than the width of slot opening.Shape and size to two powder mouths of lower powder passage reasonably design, and the pulvis of being convenient to flow out from meal outlet can be filled into the groove of steel band formation completely.
In above-mentioned arbitrary scheme preferably, described in put the inlet wire position that is arranged on main frame with pallet.Steel strip winding to be deformed is being put on band pallet, and steel band enters from the inlet wire position of main frame, becomes groove shapes through overcorrection, shaping; When through blanking position, in groove, fill a certain amount of pulvis; Along with the operation of main frame, groove closes up sealing, forms matrix material; Matrix material continues distortion, and progressively compacting, forms cored-wire.
In above-mentioned arbitrary scheme, preferably, described rewinding machine is arranged on the line position that of main frame.After cored-wire is shaped and finishes, from main frame go out line position out, and be wrapped on rewinding machine, when rewinding machine operation, cored-wire is applied to certain tension force, and main frame also applies certain reverse tension to cored-wire, what make that cored-wire can be smooth is wrapped on rewinding machine.
In above-mentioned arbitrary scheme, preferably, described operator's console is connected with main frame and rewinding machine by cable.Operator's console can be implemented and start, moves, controls, shows, stops and comprehensive control of warning etc. the electronic department of unit.
Brief description of the drawings
Fig. 1 is the preferred embodiment schematic diagram of the utility model with the cored-wire molding device of powder dropping amount precise control device;
Fig. 2 is a preferred embodiment schematic diagram of powder dropping amount precise control device of the present utility model;
Fig. 3 is the utility model another preferred embodiment schematic diagram with the cored-wire molding device of powder dropping amount precise control device;
Fig. 4 is a preferred embodiment schematic diagram of the clean and scrap collection system of cored-wire of the present utility model;
Fig. 5 is a preferred embodiment schematic diagram of cored-wire quality detection device of the present utility model.
Figure labeling description: main frame 1, rewinding machine 2, put band pallet 3, operator's console 4, powder dropping amount precise control device 5, feed bin 6, flange 7, lower powder passage 8, proximity transducer 9, digital to analog converter 10, solid flow sensor 11, transmitter 12, computer 13, lower powder passage powder inlet 14, lower powder passage meal outlet 15, cored-wire cleans and scrap collection system 16, cored-wire 17, iron filings collection box 18, web member 19, clean frame 20, felt 21, U-lag 22, cored-wire quality detection device 23, lower contactor segment 24, upper contactor segment 25, digital display dial gauge 26, probe 27, computer 28, eddy current flaw detec 29.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is described in detail.
Embodiment mono-:
As shown in Figure 1, comprise main frame 1, rewinding machine 2, operator's console 4 and put band pallet 3 with the cored-wire molding device of powder dropping amount precise control device, at the blanking position of main frame 1, powder dropping amount precise control device 5 is installed.
As shown in Figure 2, powder dropping amount precise control device comprises feed bin 6, lower powder passage 8, material-level detecting device and powder stream amount control device.
Material-level detecting device comprises proximity transducer 9, digital to analog converter 10 and computer 13.Proximity transducer 9 is arranged on feed bin 6, and is connected with computer 13 by digital to analog converter 10.1/4~3/4 the position of material level in feed bin 6 degree of depth.In proximity transducer 9, there is an oscillatory circuit, coil in oscillatory circuit produces high frequency magnetic field, in the time that pulvis approaches magnetic field, electromagnetic induction produces eddy current in pulvis, and along with pulvis is near proximity transducer 9, eddy current strengthens, cause that the load in oscillatory circuit strengthens, then oscillations is until stop, and proximity transducer 9 utilizes amplitude detecting circuit the variation of oscillatory regime to be detected, and exports the material level detection signal of feed bin 6 interior pulvis.Proximity transducer 9 by the material level signal representation detecting out, and being transferred to digital to analog converter 10, material level signal is the discernible digital code information of computer 13 by digital to analog converter 10 establishments, then by digital-to-analog conversion, convert material level analog image to, and show by computer 13.
Material-level detecting device also comprises rly. and warning light.Proximity transducer 9 is connected with rly., and rly. is connected with warning light.When the material level of feed bin 6 interior pulvis lower than feed bin 6 volumes 1/4 or higher than feed bin 6 volumes 3/4 time, warning light is bright, and sends guard signal.When warning light sends guard signal, the danger button of operator's push platform 4, makes whole cored-wire unit out of service.
Powder stream amount control device comprises solid flow sensor 11, transmitter 12 and computer 13.Solid flow sensor 11 is arranged on lower powder passage 8, and is connected with computer 13 by transmitter 12.Pulvis in the downward powder passage 8 of solid flow sensor 11 is launched low-yield microwave signal, and signal is received by solid flow sensor 11 again after being reflected by pulvis.Solid flow sensor 11 by the signal representation receiving out, and is transferred to transmitter 12, and transmitter 12 is connected with computer 13, and the measurement signals of measuring output is presented on computer 13.
Feed bin 6 is connected with lower powder passage 8 by flange 7, and one end that lower powder passage 8 is connected with feed bin 6 is lower powder passage powder inlet 14, and the other end is lower powder passage meal outlet 15.The plane parallel at the plane at lower powder passage powder inlet 14 places and lower powder passage meal outlet 15 places, two powder mouths are on same axis, and axis is vertical with the plane at two powder mouth places.Lower powder passage powder inlet 14 and lower powder passage meal outlet 15 be shaped as rectangle, the pulvis flowing out from meal outlet is filled in steel band, steel band during through the blanking position of main frame 1, has been deformed into the shape of groove.Rectangular long limit should be along steel band length direction, and rectangular width is not more than the width of slot opening, and the pulvis flowing out from meal outlet can be filled into the groove of steel band formation completely.
As shown in Figure 1, put the inlet wire position that is arranged on main frame 1 with pallet 3.Steel strip winding is being put on band pallet 3, and steel band enters from the inlet wire position of main frame 1, becomes groove shapes through overcorrection, moulding; When through blanking position, in groove, fill a certain amount of pulvis; Along with the operation of main frame 1, groove closes up sealing, forms matrix material; Matrix material continues distortion, and progressively compacting, forms cored-wire.
Rewinding machine 2 is arranged on the line position that of main frame 1.After cored-wire moulding finishes, from main frame 1 go out line position out, and be wrapped on rewinding machine 2, when rewinding machine 2 moves, cored-wire is applied to certain tension force, and main frame 1 also applies certain reverse tension to cored-wire, what make that cored-wire can be smooth is wrapped on rewinding machine 2.
Operator's console 4 is connected with main frame 1 and rewinding machine 2 by cable.Operator's console 4 can be implemented and start, moves, controls, shows, stops and comprehensive control of warning etc. the electronic department of unit.
Embodiment bis-:
Composition, the connection of each parts, the accurate control process of powder dropping amount and main frame, the rewinding machine of the powder dropping amount precise control device 5 on cored-wire molding device, put identical with described in embodiment mono-of setting position with pallet and operator's console and connection etc.
As shown in Figure 3, comprise main frame 1, rewinding machine 2, operator's console 4 and put band pallet 3 with the cored-wire molding device of powder dropping amount precise control device, powder dropping amount precise control device 5 is installed at blanking position at main frame 1, wire outlet part installation kit heart yearn at main frame 1 cleans and scrap collection system 16, cored-wire 17 from clean and scrap collection system out, enter cored-wire quality detection device 23.
As shown in Figure 4, the clean and scrap collection system of cored-wire comprises iron filings collection box 18, web member 19, clean frame 20 and felt 21.Iron filings collection box 18 is positioned over the below of two horizontal clean frames 20, and links together by the web members such as screw 19, and the foreign material such as chip, pulvis that cored-wire 17 falls down when clean are just collected in iron filings collection box 18.
Centre in two clean frames 20 side parallel with iron filings collection box 18 arranges respectively U-lag 22, at two interior felts 21 of installing respectively of U-lag 22.One of them U-lag 22 opening down, for the upper surface of clean cored-wire 17, another U-lag 22 opening up, for the lower surface of clean cored-wire 17.
Circular cored-wire 17 continues to pass through two U-lags 22 on clean frame 20, and U-lag 22 center is on same axis, and axis and cored-wire 17 are on same straight line.Straight operation at the uniform velocity under the reverse tension effect that cored-wire 17 applies at main frame 1 and rewinding machine 2, cored-wire 17 is parallel to the ground, and cleans online through two U-lags 22.Cored-wire 17 enters cored-wire quality detection device 23 and detects online after clean and scrap collection system.
As shown in Figure 5, cored-wire quality detection device 23 comprises dimension measuring device and defect detecting device.Dimension measuring device is for the size of on-line measurement cored-wire 17, and defect detecting device is for the online defect situation that detects the outer steel band of cored-wire.
Dimension measuring device comprises digital display dial gauge 26, computer 28, upper contactor segment 25 and lower contactor segment 24.The lower side contacts of lower contactor segment 24 and cored-wire 17, the upper side contacts of upper contactor segment 25 and cored-wire 17.The probe 27 of digital display dial gauge 26 is connected with upper contactor segment 25, and the size of on-line measurement is shown by digital display dial gauge 26.Digital display dial gauge 26 is connected with computer 28, and the cored-wire size of on-line measurement is shown on computer 28 with the form of curve, can see clearly the whether uniformity of size of whole cored-wire by graphic representation.
Defect detecting device comprises eddy current flaw detec 29 and computer 28, eddy current flaw detec 29 is connected with computer 28, cored-wire 17 is detected online, and the flaw indication detecting intensity and distribution situation with eddy current on computer 28 shown, and then know whether cored-wire inside or surface exist defect, and the size of defect.Open-work shape in the middle of the shape of cored-wire 17 and eddy current flaw detec 29 is circle, and the size of open-work is to be just as the criterion through cored-wire.
Cored-wire molding device of the present utility model can accurately be controlled powder dropping amount, makes the weight of pulvis in every meter of cored-wire keep certain value, and then makes the weight uniformity of pulvis in whole produced cored-wire.
Install after the clean and scrap collection system of cored-wire, can clean online chip or dust and other impurities that the lubricating oil, pulvis, the strip deformation that on the outer steel band of cored-wire, adhere to stay, simultaneously by the refuse collecting cleaning in iron filings collection box, be convenient to focus on foreign material.
The size that can accurately measure cored-wire after cored-wire quality detection device has been installed, can detect cored-wire simultaneously after the rolling machining deformation in early stage, whether its outer steel band has serious crackle, thereby realizes the online detection of cored-wire quality, has improved qualification rate.
Smooth by the prepared cored-wire rounding of cored-wire molding device of the present utility model, discount limit, steel mill is in the time being used this alloy claded wire refined alloy steel, and production efficiency and conforming product rate all can improve greatly.
The above, it is preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, when can utilizing the technology contents of above-mentioned announcement to make a little variation or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solutions of the utility model, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all still belong to the scope of technical solutions of the utility model.

Claims (10)

1. with a cored-wire molding device for powder dropping amount precise control device, comprise main frame, rewinding machine, operator's console and put band pallet, it is characterized in that: the blanking position of described main frame is provided with powder dropping amount precise control device.
2. the cored-wire molding device with powder dropping amount precise control device as claimed in claim 1, is characterized in that: described powder dropping amount precise control device comprises feed bin, lower powder passage, material-level detecting device and powder stream amount control device.
3. the cored-wire molding device with powder dropping amount precise control device as claimed in claim 2, is characterized in that: described material-level detecting device comprises level sensing transducer, digital to analog converter and computer.
4. the cored-wire molding device with powder dropping amount precise control device as claimed in claim 3, is characterized in that: described level sensing transducer is arranged on feed bin, and level sensing transducer is connected with computer by digital to analog converter.
5. the cored-wire molding device with powder dropping amount precise control device as claimed in claim 3, is characterized in that: described material-level detecting device also comprises rly. and warning light.
6. the cored-wire molding device with powder dropping amount precise control device as claimed in claim 5, is characterized in that: described level sensing transducer is connected with rly., and described rly. is connected with warning light.
7. the cored-wire molding device with powder dropping amount precise control device as claimed in claim 2, is characterized in that: described powder stream amount control device comprises solid flow sensor, transmitter and computer.
8. the cored-wire molding device with powder dropping amount precise control device as claimed in claim 7, is characterized in that: described solid flow installation of sensors is on lower powder passage, and solid flow sensor is connected with computer by transmitter.
9. the cored-wire molding device with powder dropping amount precise control device as claimed in claim 2, it is characterized in that: described feed bin is connected with described lower powder passage by flange, one end that described lower powder passage is connected with described feed bin is lower powder passage powder inlet, and the other end of described lower powder passage is lower powder passage meal outlet.
10. the cored-wire molding device with powder dropping amount precise control device as claimed in claim 9, is characterized in that: described lower powder passage powder inlet and described lower powder passage meal outlet be shaped as circle, rectangle or square.
CN201420101287.2U 2014-03-07 2014-03-07 Core spun yarn forming equipment provided with accurate powder blanking amount control device Expired - Lifetime CN203728872U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420101287.2U CN203728872U (en) 2014-03-07 2014-03-07 Core spun yarn forming equipment provided with accurate powder blanking amount control device

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Application Number Priority Date Filing Date Title
CN201420101287.2U CN203728872U (en) 2014-03-07 2014-03-07 Core spun yarn forming equipment provided with accurate powder blanking amount control device

Publications (1)

Publication Number Publication Date
CN203728872U true CN203728872U (en) 2014-07-23

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Granted publication date: 20140723