CN212426287U - Carding machine rotary cover plate device capable of rolling on curved rail - Google Patents
Carding machine rotary cover plate device capable of rolling on curved rail Download PDFInfo
- Publication number
- CN212426287U CN212426287U CN202021731134.8U CN202021731134U CN212426287U CN 212426287 U CN212426287 U CN 212426287U CN 202021731134 U CN202021731134 U CN 202021731134U CN 212426287 U CN212426287 U CN 212426287U
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- cover plate
- chain link
- transmission
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- hole
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- 238000009960 carding Methods 0.000 title claims abstract description 37
- 238000005096 rolling process Methods 0.000 title claims description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 72
- 230000007246 mechanism Effects 0.000 claims abstract description 39
- 230000000149 penetrating effect Effects 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 abstract description 9
- 210000001520 comb Anatomy 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000002513 implantation Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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Abstract
A can be on the revolving cover plate apparatus of the carding machine that rolls on the bend, the utility model discloses equip with the chain link at both ends of the revolving cover plate separately, the both sides of the chain link are equipped with the pin shaft and wear the dress hole, the middle section of one side of the chain link is equipped with the holding tank, another side portion of the chain link in its adjacent revolving cover plate unit stretches into the holding tank, form the endless connected and circulating transmission unit cooperating with drive mechanism through the mutual connection of the chain link; the pin shaft penetrates through a pin shaft penetrating hole with an accommodating groove and a pin shaft penetrating hole of a chain link of an adjacent rotary cover plate unit, the transmission block is sleeved on the pin shaft, and two end parts of the pin shaft are limited by check rings; the transmission mechanism drives the transmission block to drive the slewing mechanism to rotate circularly. The utility model discloses realize that the transmission piece rolls on the bend, do not have the slip between gyration apron and bend, in carding machine life cycle, bend and bearing need not to maintain or change hardly, and the gyration apron also need not to maintain or change, and combs the quality and remain stable all the time.
Description
Technical Field
The utility model belongs to carding machine part device field especially relates to a can be on the bend rolling carding machine revolving cover plate device.
Background
The revolving flat of the carding machine is the key carding component, which together with the cylinder completes the finest and nearly the last carding, determining the quality of the product. In view of the special status of the revolving flat as a special part in the textile industry, in order to improve the carding quality, it becomes a hot spot and a focus for research and modification of professional manufacturers and use factories of various countries in the world. For example, the national professional manufacturers such as Japan adopt a pre-carding fixed cover plate to reduce the working pressure of a rotary cover plate so as to achieve the aim of improving the carding quality, but the phenomena of needle teeth which cannot keep sharp, filling and breaking seeds, inconvenient operation, blocking and squeezing cars and the like always trouble people, so the pre-carding fixed cover plate cannot be widely used. At present, the main attack direction of domestic and foreign experts is mainly in the aspects of needle implantation materials, needle implantation shapes, needle implantation arrangement, sharpening maintenance and the like, and although certain effect is achieved, no qualitative breakthrough is achieved. If the small plane with the diameter of 2.5-3 mm is ground at the butt end of the flat card clothing, the carding gauge can be reduced, the carding quality is improved, but at present, the experience of controlling the large plane and the small plane to be successfully ground at one time does not exist at home and abroad, if the grinding synthesis is adopted twice, the labor intensity and the labor intensity are increased, the quality cannot be ensured, once the needle is connected, the grinding is difficult, the precision of the two needle surfaces is difficult to ensure, the service life of the card clothing is greatly shortened, and therefore, the grinding of the small flat card clothing cannot be popularized. In conclusion, the improvement measures leave from the modification of the important link of the structural size of the cover plate, and the geometric shape of the cover plate is hardly changed in hundreds of years. At present, as shown in fig. 1-3, the conventional chain revolving cover plate device of most carding machines in China is provided with a threaded hole on the outer end surface of each of two sides of the revolving cover plate, end blocks on two sides of the revolving cover plate, and heel and toe surfaces in the end blocks. The half-thread bolt penetrates through the sleeve of the chain and is screwed on the threaded holes on the two sides of the rotary cover plate, the non-threaded area of the half-thread bolt is in clearance fit with the sleeve of the chain, and the rotary cover plate can still rotate around the half-thread bolt. The plurality of rotary cover plates and the two chains positioned at the two sides are connected by using half-thread bolts to form a circulating rotary cover plate unit. The grooves on the two sides of the rotary cover plate are meshed with the chain wheel, when the rotary cover plate works, the chain wheel is driven by external force to rotate to drive the rotary cover plate to do circular rotary motion, and the end block of the rotary cover plate does sliding friction motion on the curved rail.
As shown in fig. 4-6, the tooth belt revolving cover plate device has holes in the end blocks at both sides of the revolving cover plate, and heel and toe surfaces are arranged in the end blocks; the tooth-shaped belt is provided with a conical projection, the projection is inserted into a hole in the end block and connected with a rotary cover plate, a plurality of rotary cover plates are connected with the tooth-shaped belt to form a circulating rotary cover plate unit, and the back of the tooth-shaped belt is provided with straight teeth which are meshed with the belt wheel. When the rotary cover plate works, the belt wheel is driven by external force to rotate so as to drive the rotary cover plate to do circular rotary motion, and the end block of the rotary cover plate does sliding friction motion on the curved rail.
The two structures of the rotary cover plate have the following defects:
(1) no matter traditional chain gyration apron or toothed belt gyration apron, the end piece of its gyration apron both sides all need directly to slide on the bend, even if use graphite to do the lubrication, end piece and bend are after working through a period of time, all can appear serious wearing and tearing phenomenon, make the poor emergence of heel toe of removable cover change, influence the carding quality.
(2) After the abrasion, measures such as grinding the heel and toe surfaces of the rotary cover plate and the like are needed to maintain the normal operation of the equipment, and a large amount of manpower, material resources and financial resources are consumed.
SUMMERY OF THE UTILITY MODEL
The end piece to current gyration apron both sides all need directly slide on the bend, through a period work after, serious wearing and tearing all can appear, influence the problem of combing the quality, the utility model aims at providing a need not to maintain or change, the gyration apron also need not to maintain or change, and comb the quality all the time remain stable can be on the bend rolling carding machine gyration apron device.
Therefore, the utility model adopts the following technical scheme: a revolving flat device of carding machine capable of rolling on a curved track comprises a plurality of revolving flat units and a transmission mechanism, two groups of revolving mechanisms are formed by arranging revolving cover plate units, each revolving cover plate unit comprises a revolving cover plate, it is characterized in that the rotary cover plate unit also comprises chain links, pin shafts and transmission blocks, the two ends of the rotary cover plate are respectively provided with the chain links, both sides of the chain link are provided with pin shaft penetrating holes matched with the pin shafts, the middle section of one side of the chain link is provided with a holding groove penetrating through the pin shaft mounting holes, the width of the accommodating groove is equivalent to the thickness of the other side part of the chain link, the other side part of the chain link of the adjacent rotary cover plate unit extends into the accommodating groove, the chain links are connected with each other to form a circulating transmission unit which is connected in a tail-ending way and is matched with the transmission mechanism; the pin shaft penetrates through a pin shaft penetrating hole with an accommodating groove and a pin shaft penetrating hole of a chain link of an adjacent rotary cover plate unit, the transmission block is sleeved on the pin shaft, and two end parts of the pin shaft are limited by check rings; the transmission mechanism drives the transmission block to drive the slewing mechanism to rotate circularly.
As the supplement and improvement to the technical proposal, the utility model also comprises the following technical characteristics.
The rotary cover plate comprises a rotary cover plate framework, and elastic card clothing is coated on the periphery of the rotary cover plate framework; chain link installation parts are formed at two end parts of the rotary cover plate framework respectively, and vertical through holes are formed in the chain link installation parts.
The top of chain link be provided with the round hole of vertical through-hole, the middle section of chain link be provided with round pin axle mounting hole parallel rectangular hole, the rectangular hole is used for placing hexagon nut, hexagon nut just right round hole and vertical through-hole, the screw pass vertical through-hole and round hole with hexagon nut fixed connection.
The two groups of slewing mechanisms are oppositely spaced by a certain distance and are driven to rotate through the transmission mechanism, the transmission mechanism comprises chain wheels, an input shaft, transmission shafts and transmission wheels, two sides of the circulating transmission unit are respectively supported and installed through the chain wheels and the transmission wheels, tooth parts of the chain wheels extend into the space between two adjacent transmission blocks, the two transmission wheels of the two groups of slewing mechanisms are supported and penetrated through the transmission shafts, and the two chain wheels of the two groups of slewing mechanisms are supported and penetrated through the input shafts; the input shaft and the transmission shaft are supported and installed on the support frame.
Each group of the slewing mechanisms also comprises a supporting wheel, an arc supporting block and a straight supporting block, wherein the supporting wheel, the arc supporting block and the straight supporting block are arranged on the circulating transmission unit through the supporting frame in parallel, so that the circulating transmission unit is crescent.
The support frame include left branch strut and right branch strut, left branch strut and right branch strut support fixed connection through many cross support poles, the bottom of left branch strut and right branch strut sets up the mounting hole that is used for with the fastening of carding machine cylinder wallboard.
The transmission block is a bearing, and after the rotary cover plate device of the carding machine is arranged on the cylinder wall plate of the carding machine, the rotary cover plate device of the carding machine is tightly pressed on the curved rail above the cylinder wall plate of the carding machine through the bearing.
The top of chain link be provided with chain link installation department complex mounting groove, vertical through-hole set up in the mounting groove.
The center positions of the pin shaft mounting holes on the two sides of the chain link have height difference, so that heel-toe difference can be generated after the rotary cover plate is mounted.
The bearing is sleeved at the front end of the pin shaft and arranged on the front side of the chain link, the front side of the bearing is limited through the clamp spring, and the rear end of the pin shaft is limited through the clamp spring.
When the chain wheel driving device works, an input rotation is driven by external force to drive the chain wheel to rotate, the rotary cover plate fastened on the chain link makes a circular rotary motion, bearings on two sides of the rotary cover plate make a rolling friction motion on the curved rail, and the bearings backwards respectively pass through the driving wheel, the straight supporting block, the supporting wheel and the arc supporting block in a circular rotary period and then return to the chain wheel on the input shaft.
The utility model discloses following beneficial effect can be reached: 1. the utility model discloses a setting up the chain link that is used for connecting the transmission piece in gyration apron both sides, installing the transmission piece on the chain link, forming the circulation drive unit through chain link interconnect to realize that the transmission piece rolls on the bent rail, do not have the slip between gyration apron and bent rail, in carding machine life cycle, bent rail and bearing almost do not have wearing and tearing, need not to maintain or change, and the gyration apron also need not to maintain or change, and the carding quality remains stable throughout. 2. The utility model discloses a set up the transmission piece into the bearing, the bearing is rolling friction on the bend, and consequently circulation gyration apron running resistance is little, and corresponding driving motor energy consumption is little.
Drawings
Fig. 1 is a schematic view of a revolving deck of a conventional chain revolving deck device.
Fig. 2 is a schematic view illustrating a connection between a revolving cover plate and a chain of a conventional chain revolving cover plate device.
Fig. 3 is a schematic diagram of the operation of a conventional chain revolving cover plate device.
Fig. 4 is a schematic view of a revolving cover plate of a conventional toothed belt revolving cover plate device.
Fig. 5 is a schematic view of the connection of the revolving cover plate and the toothed belt.
Fig. 6 is a schematic working diagram of the toothed belt revolving cover plate device.
Fig. 7 is a schematic view of the revolving cover plate of the present invention.
Fig. 8 is a schematic view of the chain link structure of the present invention.
Fig. 9 is a schematic sectional view of the chain link according to the present invention.
Fig. 10 is an exploded view of the revolving cover plate unit of the present invention.
Fig. 11 is a schematic structural diagram of the chain link and the pin shaft of the present invention.
Fig. 12 is a schematic front view of the swing mechanism of the present invention.
Fig. 13 is a schematic perspective view of the swing mechanism of the present invention.
Fig. 14 is a schematic perspective view of the transmission mechanism and the circulation transmission unit of the present invention.
Fig. 15 is a partially enlarged view of a portion a in fig. 14.
Fig. 16 is a schematic view of the circulation transmission unit of the present invention showing a crescent structure.
Figure 17 is the utility model discloses install in structure schematic diagram on carding machine cylinder wallboard.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 7-17, the utility model discloses a plurality of gyration apron units and drive mechanism, arrange through gyration apron unit and constitute two sets of rotation mechanism, each gyration apron unit includes gyration apron 1, gyration apron unit still includes the chain link 3, round pin axle 5 and drive block 4, chain link 3 is installed respectively to the both ends of gyration apron 1, the round pin axle that matches with round pin axle 5 wears the dress hole 32 is all seted up to the both sides of chain link 3, the middle section of one side of chain link 3 is seted up and is run through the holding tank 33 of round pin axle mounting hole, the width of this holding tank 33 is equivalent to the thickness of the other lateral part of chain link, the other lateral part of the chain link that is in its adjacent gyration apron unit stretches into the holding tank, form the circulation drive unit that connects through chain link interconnect, and with drive mechanism complex; the pin shaft 5 penetrates through a pin shaft penetrating hole with an accommodating groove and a pin shaft penetrating hole of a chain link of an adjacent rotary cover plate unit, the transmission block 4 is sleeved on the pin shaft 5, and two end parts of the pin shaft 5 are limited through check rings; the transmission mechanism drives the transmission block 4 to drive the slewing mechanism to rotate circularly.
Preferably, the rotary cover plate 1 comprises a rotary cover plate framework, and the periphery of the rotary cover plate framework is coated with elastic card clothing; chain link installation parts 2 are formed at two end parts of the rotary cover plate framework respectively, and vertical through holes are formed in the chain link installation parts 2.
Preferably, the top of chain link 3 is provided with round hole 31 with vertical through-hole, and the middle section of chain link 3 is provided with the rectangular hole 34 parallel with round pin axle mounting hole, and rectangular hole 34 is used for placing hexagon nut 36, and hexagon nut 36 is just to round hole and vertical through-hole, and screw 21 passes vertical through-hole and round hole and hexagon nut 36 fixed connection.
Preferably, the two groups of slewing mechanisms are oppositely spaced by a certain distance and driven to rotate through the transmission mechanism, the transmission mechanism comprises a chain wheel 7, an input shaft 6, a transmission shaft 8 and a transmission wheel 9, two sides of the circulating transmission unit are respectively supported and installed through the chain wheel 7 and the transmission wheel 9, the tooth part of the chain wheel 7 extends into the space between two adjacent transmission blocks 4, the two transmission wheels of the two groups of slewing mechanisms are supported and penetrated through the transmission shaft 8, and the two chain wheels 7 of the two groups of slewing mechanisms are supported and penetrated through the input shaft 6; the input shaft 6 and the transmission shaft 8 are supported and mounted on a support frame 13.
Preferably, each set of slewing mechanism further comprises a supporting wheel 10, a circular arc supporting block 11 and a straight supporting block 12, wherein the supporting wheel 10, the circular arc supporting block 11 and the straight supporting block 12 are arranged on the circulating transmission unit through a supporting frame 13 and arranged in parallel, so that the circulating transmission unit is in a crescent shape.
Preferably, the support frame 13 comprises a left support frame and a right support frame, the left support frame and the right support frame are fixedly connected through a plurality of transverse support rods 14 in a supporting mode, and mounting holes used for being fastened with a carding machine cylinder wallboard are formed in the bottoms of the left support frame and the right support frame.
Preferably, the transmission block 4 is a bearing, the front end of the transmission block 5 is arranged on the front side of the chain link 3, the front side of the bearing is limited by a clamp spring, the rear end of the pin shaft 5 is limited by the clamp spring, and after the rotary cover plate device of the carding machine is installed on a cylinder wall plate of the carding machine, the rotary cover plate device of the carding machine is pressed on a curved rail above the cylinder wall plate of the carding machine through the bearing.
Preferably, the top of the link 3 is provided with a mounting groove 35 fitted with the link mounting part, in which the vertical through hole is provided.
Preferably, the central positions of the pin shaft mounting holes on the two sides of the chain link have a height difference.
When the chain wheel driving device works, an input rotation is driven by external force to drive the chain wheel to rotate, the rotary cover plate fastened on the chain link makes a circular rotary motion, bearings on two sides of the rotary cover plate make a rolling friction motion on the curved rail, and the bearings backwards respectively pass through the driving wheel, the straight supporting block, the supporting wheel and the arc supporting block in a circular rotary period and then return to the chain wheel on the input shaft. The utility model discloses a setting up the chain link that is used for connecting the transmission piece in gyration apron both sides, installing the transmission piece on the chain link, forming the circulation drive unit through chain link interconnect to realize that the transmission piece rolls on the bent rail, do not have the slip between gyration apron and bent rail, in carding machine life cycle, bent rail and bearing almost do not have wearing and tearing, need not to maintain or change, and the gyration apron also need not to maintain or change, and the carding quality remains stable throughout. 2. The utility model discloses a set up the transmission piece into the bearing, the bearing is rolling friction on the bend, and consequently circulation gyration apron running resistance is little, and corresponding driving motor energy consumption is little.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a can be on rolling carding machine revolving cover plate device of bend, carding machine revolving cover plate device include a plurality of revolving cover plate units and drive mechanism, arrange through revolving cover plate unit and constitute two sets of rotation mechanism, each revolving cover plate unit include revolving cover plate (1), its characterized in that: the rotary cover plate unit further comprises chain links (3), pin shafts (5) and transmission blocks (4), the chain links (3) are respectively installed at two ends of the rotary cover plate (1), pin shaft penetrating holes (32) matched with the pin shafts (5) are formed in two sides of each chain link (3), an accommodating groove (33) penetrating through the pin shaft installing holes is formed in the middle section of one side of each chain link (3), the width of each accommodating groove (33) is equivalent to the thickness of the other side part of each chain link, the other side part of each chain link of the adjacent rotary cover plate unit extends into the accommodating groove, and the chain links are connected with one another to form a circulating transmission unit which is in tail connection and matched with the transmission mechanism; the hinge pin (5) penetrates through a hinge pin penetrating hole with an accommodating groove and a hinge pin penetrating hole of a chain link of an adjacent rotary cover plate unit, the transmission block (4) is sleeved on the hinge pin (5), and two end parts of the hinge pin (5) are limited through check rings; the transmission mechanism drives the transmission block (4) to drive the slewing mechanism to rotate circularly.
2. A card flat rotor apparatus according to claim 1, wherein: the rotary cover plate (1) comprises a rotary cover plate framework, and elastic card clothing is coated on the periphery of the rotary cover plate framework; chain link installation parts (2) are formed at two end parts of the rotary cover plate framework respectively, and vertical through holes are formed in the chain link installation parts (2).
3. A card flat rotor apparatus according to claim 2, wherein: the top of chain link (3) be provided with round hole (31) of vertical through-hole, the middle section of chain link (3) be provided with round pin axle mounting hole parallel rectangular hole (34), rectangular hole (34) are used for placing hexagon nut (36), hexagon nut (36) just right round hole and vertical through-hole, screw (21) pass vertical through-hole and round hole with hexagon nut (36) fixed connection.
4. A card flat rotor apparatus according to claim 3, wherein: the two groups of slewing mechanisms are oppositely spaced at a certain distance and driven to rotate through the transmission mechanism, the transmission mechanism comprises chain wheels (7), an input shaft (6), a transmission shaft (8) and transmission wheels (9), two sides of the circulating transmission unit are respectively supported and installed through the chain wheels (7) and the transmission wheels (9), tooth parts of the chain wheels (7) extend into the space between two adjacent transmission blocks (4), the two transmission wheels of the two groups of slewing mechanisms are supported and penetrated through the transmission shaft (8), and the two chain wheels (7) of the two groups of slewing mechanisms are supported and penetrated through the input shaft (6); the input shaft (6) and the transmission shaft (8) are supported and installed on the support frame (13).
5. A card flat rotor apparatus according to claim 4, wherein: each group of the slewing mechanism also comprises a supporting wheel (10), an arc supporting block (11) and a straight supporting block (12), wherein the supporting wheel (10), the arc supporting block (11) and the straight supporting block (12) are arranged on the circulating transmission unit through the supporting frame (13) in parallel, so that the circulating transmission unit is crescent.
6. A card flat rotor apparatus according to claim 5, wherein: the supporting frame (13) comprises a left supporting frame and a right supporting frame, the left supporting frame and the right supporting frame are fixedly connected through a plurality of transverse supporting rods (14), and mounting holes used for being fastened with a carding machine cylinder wallboard are formed in the bottoms of the left supporting frame and the right supporting frame.
7. A card flat rotor apparatus according to claim 6, wherein: the transmission block (4) is a bearing.
8. A card flat rotor apparatus according to claim 2, wherein: the top of chain link (3) be provided with chain link installation department complex mounting groove (35), vertical through-hole set up in the mounting groove.
9. A card flat rotor apparatus according to claim 8, wherein: the center positions of the pin shaft mounting holes on the two sides of the chain links have height difference.
10. A card flat rotor apparatus according to claim 7, wherein: the bearing is sleeved at the front end of the pin shaft (5) and arranged on the front side of the chain link (3), the front side of the bearing is limited through a clamp spring, and the rear end of the pin shaft (5) is limited through a clamp spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021731134.8U CN212426287U (en) | 2020-08-18 | 2020-08-18 | Carding machine rotary cover plate device capable of rolling on curved rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021731134.8U CN212426287U (en) | 2020-08-18 | 2020-08-18 | Carding machine rotary cover plate device capable of rolling on curved rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212426287U true CN212426287U (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021731134.8U Withdrawn - After Issue CN212426287U (en) | 2020-08-18 | 2020-08-18 | Carding machine rotary cover plate device capable of rolling on curved rail |
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| Country | Link |
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| CN (1) | CN212426287U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111910296A (en) * | 2020-08-18 | 2020-11-10 | 安徽日发纺织机械有限公司 | Carding machine rotary cover plate device capable of rolling on curved rail |
-
2020
- 2020-08-18 CN CN202021731134.8U patent/CN212426287U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111910296A (en) * | 2020-08-18 | 2020-11-10 | 安徽日发纺织机械有限公司 | Carding machine rotary cover plate device capable of rolling on curved rail |
| CN111910296B (en) * | 2020-08-18 | 2024-07-19 | 安徽日发纺织机械有限公司 | Carding machine rotary cover plate device capable of rolling on curved rail |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20210129 Effective date of abandoning: 20240719 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20210129 Effective date of abandoning: 20240719 |