CN111910305A - Rapid feeding system for cotton spinning drawing rough yarn - Google Patents
Rapid feeding system for cotton spinning drawing rough yarn Download PDFInfo
- Publication number
- CN111910305A CN111910305A CN201910385505.7A CN201910385505A CN111910305A CN 111910305 A CN111910305 A CN 111910305A CN 201910385505 A CN201910385505 A CN 201910385505A CN 111910305 A CN111910305 A CN 111910305A
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- Prior art keywords
- roving
- frame
- full
- empty
- station
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Classifications
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
- D01H9/005—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing empty packages or cans and replacing by completed (full) packages or cans at paying-out stations; also combined with piecing of the roving
- D01H9/008—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing empty packages or cans and replacing by completed (full) packages or cans at paying-out stations; also combined with piecing of the roving for cans
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
- D01H9/18—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for supplying bobbins, cores, receptacles, or completed packages to, or transporting from, paying-out or take-up stations ; Arrangements to prevent unwinding of roving from roving bobbins
- D01H9/185—Transporting cans
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
The invention discloses a quick feeding system for cotton spinning drawing roving, which comprises a drawing frame area, a roving frame area and a sliver can conveying line, wherein the drawing frame area comprises a drawing frame empty can inlet, a drawing frame and a drawing frame full can outlet, the roving frame area comprises a roving frame full can inlet, a roving frame and a roving frame empty can outlet, and the sliver can conveying line is respectively connected with the roving frame empty can outlet, the drawing frame empty can inlet, the drawing frame full can outlet and the roving frame full can inlet. The quick feeding system for the cotton spinning drawn roving replaces manual carrying, lightens the labor intensity, reduces the number of workers and the labor cost, and improves the production efficiency. The quick feeding system for the cotton spinning drawn roving realizes the information tracing of the sliver cans by arranging the information acquisition unit on the tray, and is beneficial to realizing the automation of cotton spinning production.
Description
Technical Field
The invention relates to the technical field of cotton spinning, in particular to a quick feeding system for cotton spinning drawn roving.
Background
The textile process flow comprises two parts of a spinning process and a weaving process. The spinning process mainly comprises the following steps: blowing, carding, combing, drawing, roving, spinning and the like. The drawing process is to combine several slivers, mix and draft to straighten fiber and spin into drawn sliver. The roving process is to spin a thicker yarn after drafting the drawn sliver for multiple times, slightly twisting the drawn sliver and winding the thicker yarn on a bobbin. Drawing and roving technology all relate to a large amount of empty bobbin and full bobbin conversion, and traditional technology adopts the manual work to go on, and the unordered is placed to empty full bobbin, and is inefficient and intensity of labour is big, and information also is difficult to track.
Disclosure of Invention
The invention aims to provide a quick feeding system for cotton spinning drawing rough yarns, which adopts a sliver can conveying line to complete connection, conversion and temporary storage of empty cans and full cans in a drawing area and a rough yarn area.
In order to achieve the purpose, the quick feeding system for cotton spinning drawing roving comprises a drawing frame area, a roving frame area and a sliver can conveying line, wherein the drawing frame area comprises a drawing frame empty can inlet, a drawing frame and a drawing frame full can outlet, the roving frame area comprises a roving frame full can inlet, a roving frame and a roving frame empty can outlet, and the sliver can conveying line is respectively connected with the roving frame empty can outlet, the drawing frame empty can inlet, the drawing frame full can outlet and the roving frame full can inlet.
In an embodiment of the above fast feeding system for cotton spinning drawn roving, the fast feeding system further includes a buffer area, the buffer area includes a can storage location and a buffer area shuttle car, and the buffer area shuttle car shuttles between the can conveying line and the can storage location.
In an embodiment of the above-mentioned fast feeding system for cotton-spinning drawn roving, the sliver can conveying line includes a can warehousing station and a can ex-warehousing station, and the buffer area is connected to the can warehousing station and the can ex-warehousing station.
In an embodiment of the above-mentioned fast feeding system for cotton-spinning drawn roving, the tube storage station includes an empty tube storage station and a full tube storage station, and the tube delivery station includes an empty tube delivery station and a full tube delivery station.
In an embodiment of the above-mentioned fast feeding system for cotton-spinning drawn roving, the empty bobbin storage station and the empty bobbin delivery station are disposed at one end of the buffer area, and the full bobbin storage station and the full bobbin delivery station are disposed at the other end of the buffer area.
In an embodiment of the above-mentioned quick feed system for cotton spinning drawing roving, still include the quick feed district of prepareeing material of roving, the quick feed district of prepareeing material of roving connect in full bobbin delivery platform reaches between the full bobbin entry of roving frame.
In an embodiment of the above-mentioned fast feeding system for cotton drawn roving, the buffer area is disposed between the drawing frame area and the roving frame area.
In an embodiment of the above-mentioned fast feeding system for cotton spinning drawn rovings, the drawing frame area further includes a drawing feeding area, the drawing frame area further includes a secondary drawing conveying line and a drawing frame area shuttle, the secondary drawing conveying line is connected to the sliver can conveying line, and the drawing frame area shuttle is connected to the secondary drawing conveying line and the drawing feeding area.
In an embodiment of the above-mentioned fast feeding system for cotton-spinning drawn rovings, the drawing frame area further includes a carrying manipulator, and the carrying manipulator works between the drawing frame full drum outlet and the can conveying line and between the can conveying line and the drawing frame empty drum inlet.
In an embodiment of the above fast feeding system for cotton-spinning drawn roving, the system further comprises a tray, and the tray comprises a can information collecting unit.
The quick feeding system for the cotton spinning drawn roving has the beneficial effects that the quick feeding system for the cotton spinning drawn roving replaces manual carrying, the labor intensity is reduced, the number of workers and the labor cost are reduced, and the production efficiency is improved. The quick feeding system for the cotton spinning drawn roving realizes the information tracing of the sliver cans by arranging the information acquisition unit on the tray, and is beneficial to realizing the automation of cotton spinning production.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
Fig. 1 is a schematic diagram of an embodiment of a rapid feed system for cotton drawn rovings of the present invention.
Fig. 2 is a schematic structural diagram of an embodiment of the tray of the present invention.
Wherein the reference numerals
100: drawing frame area
110: drawing frame hollow cylinder inlet
120: full bobbin outlet of drawing frame
130: drawing frame
140: secondary drawing conveying line
150: drawing frame district shuttle
160: drawing and feeding area
170: carrying manipulator
180: disc disassembling and stacking machine
200: roving frame area
210: full bobbin inlet of roving frame
220: empty bobbin outlet of roving frame
230: roving frame
260: roving feed zone
300: sliver can conveying line
310: cylinder warehousing station
311: empty cylinder warehousing station
312: full-package warehousing platform
320: platform for delivering cylinder
321: empty cylinder delivery platform
322: full-container delivery platform
330: empty cylinder fast return line body
400: buffer area
410: cartridge storage station
420: buffer area shuttle
500: rapid roving feeding and preparing area
600: tray
610: sliver can holder
Detailed Description
The following detailed description of the embodiments of the present invention with reference to the drawings and specific examples is provided for further understanding the objects, aspects and effects of the present invention, but not for limiting the scope of the appended claims.
References in the specification to "an embodiment," "another embodiment," "the present embodiment," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not intended to refer to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
Where certain terms are used in the specification and following claims to refer to particular components or features, those skilled in the art will understand that various terms or numbers may be used by a skilled user or manufacturer to refer to the same component or feature. This specification and the claims that follow do not intend to distinguish between components or features that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. In addition, the term "coupled" is intended to include any direct or indirect coupling.
It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. appears on the basis of the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplicity of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. For the sake of clarity, the terms "first," "second," "third," "fourth," and the like, as used herein, are used to distinguish one element, region, or section from another, the same or similar element, region, or section, and are not intended to limit the particular element, region, or section.
In the process of drawing to roving, a sliver produced by the drawing frame is placed into an empty can, and after the empty can is filled into a full can, two modes are provided, wherein one mode is that the full can is transported to a roving feeding area of a roving frame area, and then the roving process is completed; and secondly, the drawing material is transported to a drawing material supply area according to the requirement to carry out secondary drawing process. Generally, the number of the slivers used by the roving frame at one time is far larger than that of the drawing frame, so that the empty slivers and full slivers can be placed, and batch information of the slivers contained in the slivers also has various types. The invention discloses a quick feeding system for realizing empty and full cylinder conversion scheduling from drawing to roving in a cotton spinning production process by adopting a conveying line method in the cotton spinning production industry.
As shown in fig. 1, the fast supply system for cotton drawn roving of the present invention includes a drawing frame area 100, a roving frame area 200 and a can transfer line 300, wherein the drawing frame area 100 includes a drawing frame empty can inlet 110, a drawing frame full can outlet 120 and a drawing frame 130, and the roving frame area 200 includes a roving frame full can inlet 210, a roving frame empty can outlet 220 and a roving frame 230. In this embodiment, the drawing frame area 100 includes a plurality of drawing frames 130 and corresponding drawing frame empty bobbin inlets 110 and drawing frame full bobbin outlets 120, and similarly, the coarse sander area 200 includes a plurality of roving frames 230 and corresponding roving frame full bobbin inlets 210 and roving frame empty bobbin outlets 220, which may be correspondingly arranged according to the production capacities of the drawing frames 130 and the roving frames 230.
The can transport line 300 is connected to the drawing frame empty can inlet 110, the drawing frame full can outlet 120 of the drawing frame area 100, and the roving frame full can inlet 210 and the roving frame empty can outlet 220 of the roving frame area 200, respectively. Wherein, the empty can conveyed on the can conveying line 300 enters from the drawing frame empty can inlet 110, and after the drawing frame 130 finishes the drawing process, the full can is discharged from the drawing frame full can outlet 120 to the can conveying line 300. The full sliver cans which are conveyed on the sliver can conveying line 300 and finished with drawing enter from the full can inlet 210 of the roving frame, and after the roving process of the roving frame 230 is finished, the empty sliver cans are discharged from the empty can outlet 220 of the roving frame onto the sliver can conveying line 300 and are ready to enter the empty can inlet 110 of the drawing frame in the drawing frame area 100 again, so that the empty and full can replacement of the sliver cans is finished.
According to the invention, the feeding part and the discharging part of the drawing frame and the roving frame are connected through the sliver can conveying line 300, so that the connection and the conversion of empty and full cans of the drawing frame and the roving frame are realized, the labor force is released, and the working efficiency can be greatly improved.
The fast feeding system for cotton-spinning drawn rovings of the present invention further includes a buffer area 400, the buffer area 400 including a can storage location 410 and a buffer area shuttle 420, the buffer area shuttle 420 shuttles between the can transport line 300 and the can storage location 410. The can storage location 410 is used for temporarily storing cans, which may be empty cans or full cans. In an embodiment of the present invention, the buffer area 400 is disposed between the drawing frame area 100 and the roving frame area 200, so as to temporarily store the cans transferred between the drawing frame area 100 and the roving frame area 200.
Further, the can conveying line 300 includes a can entering station 310 and a can exiting station 320, and the buffer area 400 is connected to the can entering station 310 and the can exiting station 320 of the can conveying line 300, in other words, the buffer area 400 is located between the can entering station 310 and the can exiting station 320 of the can conveying line 300, the can on the can conveying line 300 enters the buffer area 400 through the can entering station 310 for temporary storage, or the can on the buffer area 400 returns to the can conveying line 300 through the can exiting station 310.
With reference to fig. 2, the can transport line 300 has a tray 600 thereon, the tray 600 has a can mounting portion 610, the can is mounted on the can mounting portion 610 of the tray 600, and the can transport line 300 transports the can by moving the tray 600. The buffer shuttle 420 of the buffer 400 takes out the sliver cans together with the tray 600 from the can loading station 310 and moves to the can storage location 410 for temporary storage, or takes out the sliver cans together with the tray 600 from the can storage location 410 and moves to the can unloading station 320.
The can-in station 310 of the can transport line 300 includes an empty can-in station 311 and a full can-in station 312, and correspondingly, the can-out station 320 includes an empty can-out station 321 and a full can-out station 322. The empty cans transported on the can transport line 300 enter the buffer area 400 through the empty can entrance station 311 of the can entrance station 310, and enter the can transport line 300 through the empty can exit station 321 of the can exit station 320. The full can enters the buffer area 400 through the full-can-entry station 312 of the can-entry station 310, and enters the can conveying line 300 through the full-can-exit station 322 of the can-exit station 320.
As shown in fig. 1, the empty-can loading platform 311 and the empty-can unloading platform 321 are disposed at one end of the buffer area 400, the full-can loading platform 312 and the full-can unloading platform 322 are disposed at the other end of the buffer area 400, and the buffer area shuttle vehicles 420 shuttle between the empty-can loading platform 311 and the can storage location 410, between the can storage location 410 and the empty-can unloading platform 321, between the full-can loading platform 312 and the can storage location 410, and between the can storage location 410 and the full-can unloading platform 322. Of course, the buffer shuttle 420 may be provided as one or more as needed.
In an embodiment of the present invention, the fast supply system for cotton-spun drawn roving further includes a roving fast supply and preparation area 500, and the roving fast supply and preparation area 500 is connected between the full-package delivery station 322 of the sliver delivery line 300 and the full-package inlet 210 of the roving frame in the roving frame area 200. The full sliver cans stored in the buffer area 400 are rapidly fed into the roving fast-feeding preparation area 500 through the full-can delivery station 322. The arrangement of the roving fast feeding and material preparing area 500 can supplement the full sliver can needed by the roving machine 230 in a short time, and guarantee is provided for the high-speed work of the roving machine 230. Where multiple batches of full cans are buffered in the buffer area 400, the same batch of full cans enters the fast roving supply and preparation area 500 through the stock exit station 322, i.e., the full cans in the fast roving supply and preparation area 500 are single batches of full cans.
In addition, the sliver can conveying line 300 of the present invention further includes an empty can quick return line body 330, and the empty can quick return line body 330 is arranged in parallel with the empty can warehousing station 311 and the empty can ex-warehousing station 321, that is, the empty sliver can output from the empty can outlet 220 of the roving frame does not enter the buffer area 400, and directly enters circulation through the empty can quick return line body 330.
In an embodiment of the present invention, the drawing frame area 100 further includes a secondary drawing line 140 and a drawing frame area shuttle 150, the secondary drawing line 140 connects the can line 300, and the drawing frame area shuttle 150 connects the secondary drawing line 140 and the drawing frame supply area 160 of the drawing frame area 100. The full can requiring the secondary drawing is fed from the can transfer line 300 to the secondary drawing transfer line 140, and then fed to the drawing feed area 160 by the drawing area shuttle 150, and the secondary drawing is completed. The full can completed by the secondary drawing process is discharged to the can transfer line 300 through the full can outlet 120 of the drawing frame.
The drawing frame area 100 further comprises a carrying manipulator 170 and an unstacking and stacking machine 180, the unstacking and stacking machine 180 is connected with the can conveying line 300, the carrying manipulator 170 works between the unstacking and stacking machine 180 and the full-can outlet 120 of the drawing frame, and the unstacking and stacking machine 180 is used for stacking unused empty trays or removing stacked trays for use. The handling robot 170 handles the full cans that have completed the drawing process from the full can outlet 120 of the drawing frame to the empty trays removed by the unstacking and stacking machine 180, or handles the empty cans from the unstacking and stacking machine 180 to the empty can inlet 110 of the drawing frame for buffer storage.
The operation of the rapid feed system for cotton drawn rovings of the present invention is described below in one embodiment.
In drawing frame area 100, drawing frame 130 once is done the drawing, and the full sliver can comes out from drawing frame full can export 120 back, carries to the empty tray that the dish machine 180 of folding apart out through carrying manipulator 170 on to accomplish the information binding of full sliver can and this tray, the information includes the empty full state of sliver can, information such as silver batch number, makes sliver can information traceable. The full cans are transferred to a can transfer line 300. The full cans are transported to the full-can warehousing station 312 along the can transport line 300 and enter the buffer area 400 for warehousing and caching through the buffer area shuttle 420, and the buffer area 400 is internally provided with full cans and empty cans with different batches of numbers. According to production needs, the cache area 400 obtains the delivery information of the roving fast feeding and material preparing area 500, and delivers the full sliver can of the same batch number to the full sliver delivery platform 322 through the cache area shuttle 420, and then enters the roving fast feeding and material preparing area 500 for use. When the roving frame 230 runs out of the cotton sliver in the full sliver can in the roving feeding area 260, the empty sliver can is conveyed to the sliver can conveying line 300 through the empty can outlet 220 of the roving machine, the full sliver can in the roving fast feeding and material preparing area 500 is rapidly supplemented into the roving feeding area 260, and the roving process is carried out.
The empty cans output from the roving feeding area 260 can directly reach the folding disc machine 180 in the drawing frame area 100 through the can conveying line 300, or are firstly conveyed to the empty can warehousing platform 311 along the can conveying line 300 according to production requirements, then enter the buffer area 400 through the buffer area shuttle 420 for warehousing and caching, and then are delivered out of the warehouse to enter the folding disc machine 180 as required. When the empty can enters the disc folding machine 180, the carrying manipulator 170 picks up the empty can and places the empty can on the empty can inlet 110 of the drawing frame, the empty can is cached at the empty can inlet 110 of the drawing frame and waits for the drawing frame 130 to use, and the tray for bearing the empty can is folded for standby. An information check point is arranged before a bifurcation port conveyed by each tray on the sliver can conveying line 300 so as to check information such as the empty and full state of the sliver can, the sliver batch number and the like.
When the secondary drawing process is needed, the full sliver can finished by the primary drawing is conveyed to the empty tray detached by the tray detaching and folding machine 180 through the conveying mechanical arm 170 after coming out from the full sliver can outlet 120 of the drawing frame, and the information binding of the full sliver can and the tray is finished. The full sliver cans enter the secondary drawing conveying line 140 through the sliver can conveying line 300 and are further conveyed to the drawing feeding area 160 through the drawing area shuttle 150, and secondary drawing is achieved. The empty can that has been used up is transported back to the can transport line 300 by the draw frame area shuttle 150 and the secondary draw transport line 140. The empty cans are transported along the can transport line 300 to the unstacking and stacking machine 180 where they are picked up by the handling robot 170 and placed at the draw frame empty can entrance 110 where they are buffered for use by the draw frame, at which time the pallet carrying the empty cans is stacked for use.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A rapid feed system for cotton drawn rovings comprising:
the drawing frame area comprises a drawing frame empty cylinder inlet, a drawing frame and a drawing frame full cylinder outlet;
the roving machine area comprises a full bobbin inlet of the roving machine, the roving machine and an empty bobbin outlet of the roving machine; and
and the sliver can conveying line is respectively connected with the roving frame empty can outlet, the drawing frame empty can inlet, the drawing frame full can outlet and the roving frame full can inlet.
2. The rapid feed system for cotton spun drawn rovings of claim 1, further comprising a buffer comprising a can storage location and a buffer shuttle that shuttles between the can transport line and the can storage location.
3. The system of claim 2, wherein the sliver can delivery line comprises a can entry station and a can exit station, and the buffer area connects the can entry station and the can exit station.
4. The rapid feed system for cotton spun drawn rovings of claim 3, wherein the bobbin entry station comprises an empty bobbin entry station and a full bobbin entry station, and the bobbin exit station comprises an empty bobbin exit station and a full bobbin exit station.
5. The system of claim 4, wherein the empty bobbin entry and exit stations are disposed at one end of the buffer, and the full bobbin entry and exit stations are disposed at the other end of the buffer.
6. The rapid feed system for cotton drawn rovings of claim 5, further comprising a roving rapid feed preparation area connected between the full package delivery station and the full package entry of the roving frame.
7. The rapid feed system for cotton drawn rovings according to claim 2, wherein the buffer zone is disposed between the draw frame zone and the roving frame zone.
8. The rapid feed system for cotton drawn rovings according to claim 1, wherein the draw frame zone further comprises a draw frame feed zone, the draw frame zone further comprising a secondary draw line and a draw frame zone shuttle, the secondary draw line connecting the can line, the draw frame zone shuttle connecting the secondary draw line and the draw frame feed zone.
9. The rapid feed system for cotton drawn rovings of claim 1, further comprising a handling robot operating between the draw frame full can outlet and the can transport line and between the can transport line and the draw frame empty can inlet.
10. The rapid feed system for cotton drawn rovings of claim 1, further comprising a tray comprising a can information acquisition unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910385505.7A CN111910305A (en) | 2019-05-09 | 2019-05-09 | Rapid feeding system for cotton spinning drawing rough yarn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910385505.7A CN111910305A (en) | 2019-05-09 | 2019-05-09 | Rapid feeding system for cotton spinning drawing rough yarn |
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| Publication Number | Publication Date |
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| CN111910305A true CN111910305A (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910385505.7A Pending CN111910305A (en) | 2019-05-09 | 2019-05-09 | Rapid feeding system for cotton spinning drawing rough yarn |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112486181A (en) * | 2020-12-08 | 2021-03-12 | 安徽凌坤智能科技有限公司 | Automatic transportation and collective exchange system and method for sliver can between drawing and roving processes |
| CN113355774A (en) * | 2021-06-10 | 2021-09-07 | 北自所（北京）科技发展有限公司 | Drawing roving system and sliver can conveying method applied to drawing roving system |
| CN115369529A (en) * | 2022-09-30 | 2022-11-22 | 安徽凌坤智能科技有限公司 | Method for quickly exchanging empty and full sliver cans of roving frame |
-
2019
- 2019-05-09 CN CN201910385505.7A patent/CN111910305A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112486181A (en) * | 2020-12-08 | 2021-03-12 | 安徽凌坤智能科技有限公司 | Automatic transportation and collective exchange system and method for sliver can between drawing and roving processes |
| CN113355774A (en) * | 2021-06-10 | 2021-09-07 | 北自所（北京）科技发展有限公司 | Drawing roving system and sliver can conveying method applied to drawing roving system |
| CN115369529A (en) * | 2022-09-30 | 2022-11-22 | 安徽凌坤智能科技有限公司 | Method for quickly exchanging empty and full sliver cans of roving frame |
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