阅读说明：本技术 一种高稳定针织小圆机 (High-stability small circular knitting machine ) 是由 许志德 于 2021-07-29 设计创作，主要内容包括：本发明提出一种高稳定针织小圆机,包括纱架和输线机构；所述纱架包括架主体、与架主体活动连接的输送架、以及驱动输送架沿架主体升降滑动的第一驱动装置；所述架主体具有朝向输送架的第一面,设置于第一面上的装卸单元,以及驱动装卸单元装卸纱筒的第二驱动装置；所述装卸单元由根部至端部逐渐向下倾斜；所述装卸单元包括与第一面固定连接的固定轴、套设于固定轴外且与固定轴滑动连接的套筒、以及设置于套筒内且与套筒滑动连接的滑筒；所述套筒包括容置滑筒的环形腔和两个以上设置于环形腔内的预应力伸缩卡头,两个以上所述预应力伸缩卡头沿环形腔的圆周均布设置。通过输送架的升降将处于低处的新纱筒输送至高处进行更换,提高更换纱筒的效率。(The invention provides a high-stability circular knitting machine, which comprises a creel and a yarn conveying mechanism; the creel comprises a creel body, a conveying rack movably connected with the creel body and a first driving device for driving the conveying rack to slide up and down along the creel body; the frame main body is provided with a first surface facing the conveying frame, a loading and unloading unit arranged on the first surface, and a second driving device for driving the loading and unloading unit to load and unload the yarn barrel; the loading and unloading unit is gradually inclined downwards from the root to the end; the assembling and disassembling unit comprises a fixed shaft fixedly connected with the first surface, a sleeve sleeved outside the fixed shaft and in sliding connection with the fixed shaft, and a sliding barrel arranged in the sleeve and in sliding connection with the sleeve; the sleeve comprises an annular cavity for accommodating the sliding barrel and more than two prestressed telescopic chucks arranged in the annular cavity, wherein the prestressed telescopic chucks are uniformly distributed along the circumference of the annular cavity. The new yarn barrel at the lower part is conveyed to the high part for replacement through the lifting of the conveying frame, and the efficiency of replacing the yarn barrel is improved.)

1. The utility model provides a high stable knitting small circle machine which characterized in that: comprises a creel and a yarn conveying mechanism; the creel comprises a creel body, a conveying rack movably connected with the creel body and a first driving device for driving the conveying rack to slide up and down along the creel body; the frame main body is provided with a first surface facing the conveying frame, a loading and unloading unit arranged on the first surface, and a second driving device for driving the loading and unloading unit to load and unload the yarn barrel; the loading and unloading unit is gradually inclined downwards from the root to the end; the assembling and disassembling unit comprises a fixed shaft fixedly connected with the first surface, a sleeve sleeved outside the fixed shaft and in sliding connection with the fixed shaft, and a sliding barrel arranged in the sleeve and in sliding connection with the sleeve; the sleeve comprises an annular cavity for accommodating the sliding barrel and more than two prestressed telescopic chucks arranged in the annular cavity, and the more than two prestressed telescopic chucks are uniformly distributed along the circumference of the annular cavity; the sleeve further comprises an outer sidewall outside the annular cavity; the prestress telescopic chuck comprises a clamping part movably abutted against the outer side wall and an extending part extending out of the sleeve; the sliding cylinder comprises an inserting part movably extending into the space between the outer side wall and the clamping part; the sleeve further comprises an inner side wall in the annular cavity and a connecting end wall connecting the inner side wall and the outer side wall; the sliding barrel is located between the connecting end wall and the prestress telescopic chuck.

2. The high-stability circular knitting machine according to claim 1, characterized in that: the clamping part comprises a first inclined surface which gradually inclines towards the connecting end wall from outside to inside; the insert part comprises a second inclined surface matched with the first inclined surface.

3. The high-stability circular knitting machine according to claim 1, characterized in that: the frame main body comprises more than two rows of loading and unloading units vertically distributed on the frame body and second driving devices arranged corresponding to the loading and unloading units in each row; each row of loading and unloading units comprises more than two loading and unloading units.

4. A high-stability circular knitting machine according to claim 3, characterized in that: the second driving device comprises two rotating discs which are respectively arranged at two ends and are rotationally connected with the frame body, a connecting rod connected between the two rotating discs, a transmission connecting rod connected between the first rod body and the sliding cylinder, and a driving motor for driving the rotating discs to rotate; the turntable is provided with a connecting area connected with the connecting rod, and the connecting area is arranged by deviating from the rotating shaft of the turntable; the transmission connecting rod comprises a first end part and a second connecting end part, wherein the first end part is rotatably connected with the connecting rod, and the second connecting end part is rotatably connected with the sliding cylinder.

5. A high-stability circular knitting machine according to claim 4, characterized in that: the second driving device comprises a plurality of groups of transmission connecting rods which are arranged in one-to-one correspondence with the loading and unloading units; each group of transmission connecting rods comprises two transmission connecting rods which are respectively positioned at two sides of the loading and unloading unit.

6. A high-stability circular knitting machine according to claim 5, characterized in that: the rack body also comprises a second surface which faces opposite to the first surface; the second face has a support wing plate for supporting the second driving device; the rotary disc is connected with the supporting wing plate in a rotating mode.

7. The high-stability circular knitting machine according to claim 6, characterized in that: the conveying frame comprises a first containing area positioned above, a second containing area positioned below and a partition plate positioned between the first containing area and the second containing area.

8. The high-stability circular knitting machine according to claim 7, characterized in that: the conveying frame comprises a first end part connected with the first driving device and a second end part at the other end; the partition plate is gradually inclined upwards from the first end to the second end; the second end portion comprises a sealing plate movably sealing the first accommodating area and the second accommodating area.

9. The high-stability circular knitting machine according to claim 8, characterized in that: the conveying frame further comprises a supporting plate positioned below the second accommodating area; the support plate is provided with an extension part extending towards the frame body; the extension part is gradually inclined upwards from the root part to the end part.

10. The high-stability circular knitting machine according to claim 1, characterized in that: the rack main body further includes a guide bar that guides the carriage.

Technical Field

The invention relates to the technical field of textile machinery, in particular to a high-stability circular knitting machine.

Background

Along with the development of the industry, the knitting industry is gradually evolved, knitting machines are continuously updated, and the circular knitting machines in the modern textile industry are more and more widely applied. The creel is an important component of a small circular knitting machine, but the creel is generally higher for saving the delivery room land at present; meanwhile, more yarn drums are loaded on the creel. When the yarn on the yarn bobbin is about to be used up, the yarn bobbin needs to be manually taken down one by one and then put on one by one. Not only is the bobbin at a high position not easily replaced, but also a lot of time is required for each replacement operation.

Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.

Disclosure of Invention

The invention aims to provide a high-stability small circular knitting machine; to solve the problems of the background art.

In order to achieve the purpose, the invention adopts the following technical scheme:

a high-stability circular knitting machine comprises a creel and a yarn conveying mechanism; the creel comprises a creel body, a conveying rack movably connected with the creel body and a first driving device for driving the conveying rack to slide up and down along the creel body; the frame main body is provided with a first surface facing the conveying frame, a loading and unloading unit arranged on the first surface, and a second driving device for driving the loading and unloading unit to load and unload the yarn barrel; the loading and unloading unit is gradually inclined downwards from the root to the end; the assembling and disassembling unit comprises a fixed shaft fixedly connected with the first surface, a sleeve sleeved outside the fixed shaft and in sliding connection with the fixed shaft, and a sliding barrel arranged in the sleeve and in sliding connection with the sleeve; the sleeve comprises an annular cavity for accommodating the sliding barrel and more than two prestressed telescopic chucks arranged in the annular cavity, and the more than two prestressed telescopic chucks are uniformly distributed along the circumference of the annular cavity; the sleeve further comprises an outer sidewall outside the annular cavity; the prestress telescopic chuck comprises a clamping part movably abutted against the outer side wall and an extending part extending out of the sleeve; the sliding cylinder comprises an inserting part movably extending into the space between the outer side wall and the clamping part; the sleeve further comprises an inner side wall in the annular cavity and a connecting end wall connecting the inner side wall and the outer side wall; the sliding barrel is located between the connecting end wall and the prestress telescopic chuck.

The clamping part comprises a first inclined surface which gradually inclines towards the connecting end wall from outside to inside; the insert part comprises a second inclined surface matched with the first inclined surface.

The frame main body comprises more than two rows of loading and unloading units vertically distributed on the frame body and second driving devices arranged corresponding to the loading and unloading units in each row; each row of loading and unloading units comprises more than two loading and unloading units.

The second driving device comprises two rotating discs which are respectively arranged at two ends and are rotationally connected with the frame body, a connecting rod connected between the two rotating discs, a transmission connecting rod connected between the first rod body and the sliding cylinder, and a driving motor for driving the rotating discs to rotate; the turntable is provided with a connecting area connected with the connecting rod, and the connecting area is arranged by deviating from the rotating shaft of the turntable; the transmission connecting rod comprises a first end part and a second connecting end part, wherein the first end part is rotatably connected with the connecting rod, and the second connecting end part is rotatably connected with the sliding cylinder.

The second driving device comprises a plurality of groups of transmission connecting rods which are arranged in one-to-one correspondence with the loading and unloading units; each group of transmission connecting rods comprises two transmission connecting rods which are respectively positioned at two sides of the loading and unloading unit.

The rack body also comprises a second surface which faces opposite to the first surface; the second face has a support wing plate for supporting the second driving device; the rotary disc is connected with the supporting wing plate in a rotating mode.

The conveying frame comprises a first containing area positioned above, a second containing area positioned below and a partition plate positioned between the first containing area and the second containing area.

The conveying frame comprises a first end part connected with the first driving device and a second end part at the other end; the partition plate is gradually inclined upwards from the first end to the second end; the second end portion comprises a sealing plate movably sealing the first accommodating area and the second accommodating area.

The conveying frame further comprises a supporting plate positioned below the second accommodating area; the support plate is provided with an extension part extending towards the frame body; the extension part is gradually inclined upwards from the root part to the end part.

The rack main body further includes a guide bar that guides the carriage. After the technical scheme is adopted, the high-stability circular knitting machine at least has the following beneficial effects:

in the actual implementation process, the controller controls the first driving device to drive the conveying frame for loading the new bobbin to ascend to the installation area, and controls the second driving device to enable the loading and unloading unit to stretch into or move out of an inner hole of the bobbin so as to load and unload the bobbin; specifically, in the unloading process, the second driving device drives the sliding barrel to move towards the direction of the prestress telescopic clamping head, at the moment, the sliding barrel moves relative to the sleeve due to friction force between the sleeve and the fixed shaft, the inserting part of the sliding barrel extends into the position between the outer side wall and the clamping part, the extending part of the prestress telescopic clamping head contracts inwards, and the extending part does not clamp an inner hole of the yarn barrel at the moment; the loading and unloading unit is inclined downwards, the yarn barrel falls off from the loading and unloading unit through self weight and falls into the conveying frame, and then the sliding barrel abuts against the prestress telescopic chuck to drive the sleeve to extend out; when the sleeve extends to the maximum stroke, the sleeve extends into an inner hole of a new yarn drum, the first driving device drives the sliding drum to return at the moment, the inserting part is firstly separated out between the outer side wall and the clamping part due to the friction force between the sleeve and the fixed shaft, and the extending part extends again to clamp the new yarn drum; then, the sliding cylinder props against the connecting end wall to drive the sleeve to recover; after the automatic loading and unloading are completed, the controller controls the first driving device to drive the conveying frame to descend, the old bobbin is taken out, and a new bobbin is replaced again; a yarn section of thick bamboo is changed through the auto-control handling unit, can effectual improvement change the efficiency of a yarn section of thick bamboo, and the new yarn section of thick bamboo that will be in the low department through the lift of carriage simultaneously carries to the eminence to change, and the manual work of being convenient for is operated in the low department, improves the efficiency of changing a yarn section of thick bamboo.

Drawings

FIG. 1 is a schematic view of a first perspective structure of a creel according to the present invention;

FIG. 2 is a schematic view of a second perspective of the creel of the present invention;

FIG. 3 is a schematic view of the structure of the loading and unloading unit of the present invention;

FIG. 4 is a cross-sectional view of the loading and unloading unit of the present invention;

FIG. 5 is an enlarged view of area A of the present invention;

FIG. 6 is a schematic view of a first perspective structure of the carriage according to the present invention;

FIG. 7 is a structural diagram of a second perspective view of the carriage according to the present invention;

FIG. 8 is a schematic view of the tensioner of the present invention;

FIG. 9 is a schematic sketch of the principle of the present invention;

FIG. 10 is a cross-sectional view of a tensioner of the present invention;

FIG. 11 is a cross-sectional view of an adjustment device of the present invention;

FIG. 12 is an enlarged view of the area B of the present invention;

in the figure:

a creel 1; a holder main body 11; a conveyance rack 12; a first drive device 13; a first face 111; a loading and unloading unit 2; a second driving device 3; a fixed shaft 21; a sleeve 22; a slide cylinder 23; a ring cavity 221; a prestressed retractable chuck 222; an outer side wall 223; a clip portion g 21; the protruding portion g 22; the insertion portion 231; an inner sidewall 224; a connecting end wall 225; a first sheath g 1; the first rod g 2; a first slope g 211; a second slope 2311; a turntable 31; a connecting rod 32; a transmission link 33; a second face 112; a support wing 1121; a first accommodation area 121; a second receiving area 122; a partition plate 123; a first end portion 124; a second end 125; a closing plate 1251; a support plate 126; an extension 1261; a guide rod 113; a tension wheel 4; a support plate 41; a rotating shaft 42; a tension sleeve 43; a housing 431; a prestressed telescopic rod 432; a helical groove 433; an adjusting device 5; a support 51; a drive assembly 52; a rubber ring 511; a guide wheel 512; a support rod 521; a guide sleeve 522; a sliding chamber 5221; an actuation bladder 5222; a wind-up wheel 5223; fixed segment a 1; connecting segment a 2; air cavity section a 3.

Detailed Description

In order to further explain the technical solution of the present invention, the following detailed description is given by way of specific examples.

As shown in fig. 1-12, a high-stability circular knitting machine comprises a creel 1 and a thread feeding mechanism; the creel 1 comprises a creel body 11, a conveying frame 12 movably connected with the creel body 11, and a first driving device 13 for driving the conveying frame 12 to slide up and down along the creel body 11; the frame body 11 has a first surface 111 facing the carrier 12, a loading and unloading unit 2 provided on the first surface 111, and a second driving device 3 for driving the loading and unloading unit 2 to load and unload the package; the loading and unloading unit 2 is gradually inclined downwards from the root to the end; the assembling and disassembling unit 2 comprises a fixed shaft 21 fixedly connected with the first surface 111, a sleeve 22 sleeved outside the fixed shaft 21 and slidably connected with the fixed shaft 21, and a sliding barrel 23 arranged in the sleeve 22 and slidably connected with the sleeve 22; the sleeve 22 comprises an annular cavity 221 for accommodating the sliding barrel 23 and more than two prestressed telescopic chucks 222 arranged in the annular cavity 221, wherein the more than two prestressed telescopic chucks 222 are uniformly distributed along the circumference of the annular cavity 221; the sleeve 22 also comprises an outer side wall 223 outside the annular cavity 221; the prestressed telescopic chuck 222 comprises a clamping part g21 movably abutting against the outer side wall 223 and an extension part g22 extending out of the sleeve 22; the slide cylinder 23 includes an insertion portion 231 movably inserted between the outer side wall 223 and the catching portion g 21; the sleeve 22 further comprises an inner side wall 224 in the annular cavity 221 and a connecting end wall 225 connecting the inner side wall 224 and the outer side wall 223; the spool 23 is located between the connecting end wall 225 and the pre-stressed collet 222.

In the practical implementation process, the controller controls the first driving device 13 to drive the conveying frame 12 loaded with a new bobbin to ascend to the installation area, and controls the second driving device 3 to enable the loading and unloading unit 2 to extend into or move out of an inner hole of the bobbin so as to realize loading and unloading of the bobbin; specifically, during the unloading process, the second driving device 3 drives the sliding barrel 23 to move towards the direction of the prestressed telescopic clamp 222, at this time, due to the friction force between the sleeve 22 and the fixed shaft 21, the sliding barrel 23 moves relative to the sleeve 22, the insertion part 231 of the sliding barrel 23 extends between the outer side wall 223 and the clamping part g21, the extension part g22 of the prestressed telescopic clamp 222 contracts inwards, and the extension part g22 no longer clamps the inner hole of the yarn barrel at this time; because the loading and unloading unit 2 is inclined downwards, the yarn barrel falls off from the loading and unloading unit 2 by self weight and falls into the conveying frame 12, and then the sliding barrel 23 abuts against the prestress telescopic chuck 222 to drive the sleeve 22 to extend out; when the sleeve 22 extends into the inner hole of a new bobbin when extending to the maximum stroke, the first driving device 13 drives the sliding drum 23 to recover, the inserting part 231 is firstly separated from the space between the outer side wall 223 and the clamping part g21 due to the friction force between the sleeve 22 and the fixed shaft 21, and the extending part g22 extends again to clamp the new bobbin; then, the sliding cylinder 23 abuts against the connecting end wall 225 to drive the sleeve 22 to recover; after the automatic loading and unloading are finished, the controller controls the first driving device 13 to drive the conveying frame 12 to descend, the old bobbin is taken out, and a new bobbin is replaced; the yarn barrel is replaced through the automatic loading and unloading unit 2, the efficiency of the yarn barrel can be effectively improved, meanwhile, a new yarn barrel at a low position is conveyed to a high position to be replaced through the lifting of the conveying frame 12, the manual operation at the low position is facilitated, and the efficiency of replacing the yarn barrel is improved.

Preferably, the prestressed retractable chuck 222 has a first sleeve g1 located in the annular cavity 221, a first rod g2 slidably connected to the first sleeve g1, and a first compression spring located in the first sleeve g1 and abutting against the first rod g 2. In practical implementation, the clamping part g21 and the extension part g22 are both arranged on the first rod body g2, and prestress is provided through the first compression spring, so that the first rod body g2 has an extension trend, and the prestress telescopic chuck 222 can extend out to clamp a yarn barrel.

Preferably, the catching portion g21 includes a first slope g211 gradually inclined toward the connecting end wall 225 from the outside to the inside; the socket 231 includes a second slope 2311 that mates with the first slope g 211. In practical implementation, when the sliding barrel 23 moves towards the direction of the prestressed telescopic clamp 222, the first inclined surface g211 of the clamping part g21 moves along the second inclined surface 2311 of the inserting part 231, so that the clamping part g21 contracts, and at this time, the prestressed telescopic clamp 222 contracts and no longer clamps the inner hole of the yarn barrel; the insertion portion 231 can smoothly and efficiently extend between the outer side wall 223 and the clamping portion g21 by the cooperation of the first inclined surface g211 and the second inclined surface 2311.

Preferably, the rack main body 11 comprises more than two rows of loading and unloading units 2 vertically distributed on the rack body and second driving devices 3 corresponding to the loading and unloading units 2 in each row; each row of loading and unloading units 2 comprises more than two loading and unloading units 2. In the practical implementation process, the controller can control the second driving devices 3 corresponding to each row of loading and unloading units 2, and simultaneously drive the whole row of loading and unloading units 2 to load and unload simultaneously, so that the loading and unloading efficiency can be effectively improved.

Preferably, the second driving device 3 includes two rotating discs 31 respectively disposed at two ends and rotatably connected to the frame, a connecting rod 32 connected between the two rotating discs 31, a transmission link 33 connected between the first rod g2 and the sliding cylinder 23, and a driving motor for driving the rotating discs 31 to rotate; the rotary plate 31 has a connection area connected with the connecting rod 32, and the connection area is arranged by deviating from the rotating shaft of the rotary plate 31; the transmission link 33 includes a first end 124 rotatably connected to the connecting rod 32 and a second connecting end rotatably connected to the spool 23. In the practical implementation process, the driving motor drives the turntable 31 to rotate, so that the connecting rod 32 is eccentrically arranged to rotate along the axis of the turntable 31, and further the transmission connecting rod 33 drives the sliding cylinder 23 to reciprocate; the device is matched with the loading and unloading unit 2, so that the prestressed telescopic chuck 222 contracts when the loading and unloading unit 2 extends, and a bobbin falls off; when the loading and unloading unit 2 contracts, the prestress telescopic clamping head 222 extends out to clamp the yarn cylinder, so that the yarn cylinder is loaded and unloaded efficiently.

Preferably, the second driving device 3 comprises a plurality of sets of transmission connecting rods 33 which are arranged in one-to-one correspondence with the loading and unloading units 2; each set of transmission links 33 comprises two transmission links 33 at both sides of the loading and unloading unit 2. In the practical implementation process, the transmission connecting rods 33 which are respectively arranged on the two sides of the assembling and disassembling unit 2 enable the two sides of the sliding cylinder 23 to be stressed evenly in the sliding process, and further enable the moving process of the sliding cylinder 23 to be stable and smooth.

Preferably, the frame body further comprises a second face 112 facing opposite to the first face 111; the second face 112 has a support fin 1121 that supports the second driving device 3; the rotary disc 31 is rotatably connected to the support wing 1121. In practical implementation, the second driving device 3 can be supported and protected by the support wing 1121, and at the same time, the manufacturing and installation are facilitated.

Preferably, the conveying rack 12 includes a first receiving area 121 at an upper side, a second receiving area 122 at a lower side, and a partition plate 123 between the first receiving area 121 and the second receiving area 122. In the actual implementation process, the first accommodating area 121 located above accommodates a new bobbin, the second accommodating area 122 located below accommodates an old bobbin, in the loading and unloading process, the unloaded old bobbin falls into the second accommodating area 122, and the new bobbin is placed in the first area, so that the placement and transportation of the bobbin are facilitated.

Preferably, the carriage 12 comprises a first end 124 connected to the first driving device 13 and a second end 125 at the other end; the partition plate 123 is gradually inclined upward from the first end 124 to the second end 125; second end 125 includes a closure plate 1251 that movably encloses first receiving area 121 and second receiving area 122. In practical implementation, the first driving device 13 includes a sprocket and a chain belt, the first end 124 is connected to the chain belt, the chain belt is driven by the sprocket to lift and drive the conveying frame 12 to lift, the first accommodating area 121 and the second accommodating area 122 can be opened or closed by the movably closed sealing plate 1251, and only one row of yarn bobbins can be replaced during one-time conveying of the conveying frame 12; the closing plate 1251 is opened firstly, a new bobbin is placed on the partition plate 123, the new bobbin rolls into the first accommodating area 121 in a smooth manner, and a plurality of new bobbins are loaded at the moment; at the same time, the old yarn package in the second receiving area 122 can be removed to empty the second receiving area 122; the efficiency of loading and unloading a yarn section of thick bamboo in the carriage 12 can be effectively improved, the time of loading and unloading a yarn section of thick bamboo is saved.

Preferably, the carriage 12 further comprises a support plate 126 below the second housing area 122; the support plate 126 has an extension 1261 extending toward the rack body; the extension 1261 is gradually inclined upward from the root to the end. In actual practice, the old bobbin is supported by the support plate 126; when the old bobbin on the loading and unloading unit 2 falls off from the extending part 1261 and rolls into the second accommodating area 122 along the extending part 1261, the old bobbin can be effectively prevented from falling off, the time for collecting the old bobbin is reduced, and the efficiency of the bobbin in the longer conveying frame 12 is improved.

Preferably, the rack body 11 further includes a guide bar 113 that guides the carriage 12. In practical implementation, the guide rod 113 limits the conveying frame 12, so that the conveying frame 12 moves up and down along the guide rod 113, and meanwhile, the guide rod 113 limits the gap between the conveying frame 12 and the first surface 111 to be smaller than the outer diameter of the old bobbin, so that the old bobbin can accurately fall into the second accommodating area 122.

The circular knitting machine also comprises a yarn supply mechanism, wherein the yarn supply mechanism comprises a tension pulley 4 positioned between the creel and the yarn feeder; the tension pulley 4 comprises two oppositely arranged supporting plates 41, a rotating shaft 42 connected between the two supporting plates 41, and a tension sleeve 43 sleeved outside the rotating shaft 42; the tension sleeve 43 includes two or more housings 431 slidably connected to the support plate 41. The tensioner 4 further comprises a prestressed telescopic rod 432 connected between the rotating shaft 42 and the housing 431. In the actual implementation process, the yarn is wound on the tension wheel 4 for more than two circles, the yarn is wound on the shell 431, the prestress telescopic rod 432 is in a force storage state at the moment, and the yarn drives the tension wheel 4 to rotate to convey the yarn; when the vibration occurs, the tightness degree of the yarn is changed; specifically, when the yarn is tight, the pre-stressed telescopic rod 432 contracts to store force; when the yarn is loosened, the shell 431 of the tension wheel 4 extends outwards under the action of the prestress telescopic rod 432, the circumference of the tension wheel 4 is enlarged, the shell 431 is attached to the yarn in a self-adaptive mode to support the yarn, so that the yarn is tightened, and the tension wheel 4 rotates to convey the yarn, so that the continuity of the yarn is guaranteed; avoid yarn and take place sliding friction with take-up pulley 4 to avoid the yarn to produce static, dust in can effectual reduction yarn adsorption air, and then improve the quality of product.

Preferably, the prestressed telescopic rod 432 includes a first sleeve body fixedly disposed on the rotating shaft 42, a first rod body slidably connected to the first sleeve body, and a first pressure spring disposed in the first sleeve body and abutting against the first rod body; the first rod includes a first end extending into the first sleeve and a second end fixedly connected to the housing 431. When the yarn is tightened, the first pressure spring is in a force storage state; when the yarn is loosened, the first pressure spring abuts against the first rod body to extend out, the circumference of the tension wheel 4 is enlarged, and the shell 431 supports the yarn; the structure is simple and convenient to manufacture.

Preferably, the tensioner 4 further comprises a helical groove 433 provided on the housing 431. In actual implementation, twine the yarn on take-up pulley 4 and twine along spiral groove 433, the yarn laminating is spacing to the yarn in the bottom of spiral groove 433 through the lateral wall of spiral groove 433, avoids the coil to twine each other, and then guarantees the continuity of yarn.

Preferably, the spiral groove 433 has an opening for the yarn to enter; the opening tapers from the bottom to the end of the spiral groove 433. In actual implementation, in the instant that the yarn becomes lax, the increase is relaxed suddenly to the coil of winding on take-up pulley 4, and the first opening of accessible is spacing to the coil this moment, avoids the yarn to break away from spiral groove 433, and then avoids intertwining between the coil to guarantee the continuity of yarn.

Preferably, the cross-sectional shape of the spiral groove 433 includes an arc shape. In practical implementation, the structure is convenient to process.

Preferably, the yarn feeding mechanism further comprises an adjusting device 5 between the tension wheel 4 and the yarn feeder; the adjustment device 5 comprises a support 51 supporting the yarn and a drive assembly 52 driving the support 51 to telescope. In the actual implementation process, the prestress of the tension wheel 4 is adjusted through the adjusting device 5; when the driving component 52 drives the supporting component 51 to extend to abut against the yarn, the tension wheel 4 is contracted by pulling the yarn, and the prestress telescopic rod 432 stores the force; the degree of tightness of the yarn is convenient to adjust through the adjustment of the adjusting device 5, and meanwhile, the tensioning wheel 4 has a larger self-adaptive adjusting range.

Preferably, the support 51 comprises a rubber ring 511 and two guide wheels 512 respectively arranged at two sides of the rubber ring 511 for guiding the yarn; the rubber ring 511 has an inner hole through which a yarn passes; the aperture of the inner hole is smaller than the diameter of the yarn. In the practical implementation process, the yarn passes through the inner hole of the rubber ring 511 and is conveyed into the yarn conveyer, when the yarn is broken, in order to ensure the tightness of the yarn, friction force can be generated through the friction between the rubber ring 511 and the yarn, and the rubber ring 511 and the yarn conveyer are tightened through the action of the friction force, so that the probability of missed knitting is greatly reduced, and the quality of a product is improved; when the supporting member 51 extends to abut against the yarn, the yarn has a reaction force acting on the rubber ring 511, and does not move due to the rotation of the tensioning wheel 4, and when the driving assembly 52 drives the supporting member 51 to extend for a longer distance, the reaction force is also larger, the yarn is still in a conveying state, and the yarn cuts the rubber ring 511; in order to slow down the cutting of the rubber ring 511 by the yarn and prolong the service life of the rubber ring 511, the yarn is guided by the guide wheels 512 arranged at the two sides of the rubber ring 511, so that the friction line segment of the yarn and the rubber ring 511 is parallel to the axis of the inner hole of the rubber ring 511, the cutting action of the yarn on the rubber ring 511 is slowed down, and the service life of the rubber ring 511 is prolonged.

Preferably, the driving assembly 52 includes a supporting rod 521 connected to the supporting member 51, a guiding sleeve 522 sleeved outside the supporting rod 521, and a power assembly for driving the supporting rod 521 to slide along the guiding sleeve 522; the guide sleeve 522 is slidably connected to the support rod 521. In the actual implementation process, the controller controls the power assembly to drive the supporting rod 521 to slide, so that the supporting part moves up and down; the structure is convenient to manufacture and has high adjusting efficiency.

Preferably, the guide sleeve 522 includes a sliding cavity 5221 into which the support rod 521 extends; the power assembly comprises a driving air bag 5222 in the sliding cavity 5221, a driving air bag 5222 for rolling the driving air bag 5222 and a gas supply and exhaust mechanism; the driving airbag 5222 comprises a fixed section a1 fixedly connected with the inner side wall of the sliding cavity 5221, a rolling section rolled on the driving airbag 5222, and a connecting section a2 connected between the fixed section a1 and the rolling section; the driving air bag 5222 is hermetically connected with the sliding cavity 5221 to form an air containing cavity section a 3; the air supply and exhaust mechanism comprises an air inlet pipe and an exhaust pipe which are communicated with the cavity section of the container; the driver bladder 5222 is provided with a coil spring. In the practical implementation process, after the controller controls the air supply and exhaust mechanism to inject air into the air containing cavity section a3 through the air inlet pipe, the air pressure in the air containing cavity section a3 is increased, the air extrudes the connecting section a2 at the upper end of the air containing cavity, the connecting section a2 jacks upwards under the action of the pressure, the part of the connecting section a2 is attached to the inner side wall of the sliding cavity 5221, meanwhile, the other part of the connecting section a2 pulls the winding section to move upwards, the air bag 5222 is driven to rotate to release the winding section, the winding section is converted into the connecting section a2, and the coil spring stores the force; the connecting section a2 rolls towards the inner side wall of the sliding cavity 5221 continuously, the part of the connecting section a2, which is attached to the inner side wall of the sliding cavity 5221, is increased gradually, the air containing cavity section a3 is expanded, the air bag 5222 is driven to jack upwards gradually, and the pushing guide is pushed to lift upwards; when the controller controls the air supply and exhaust mechanism to exhaust air in the air cavity section a3, the coil spring is recovered to drive the air bag 5222 to rotate the winding connecting section a2, the connecting section a2 is converted into a winding section, the air cavity section a3 contracts, and the supporting rod 521 contracts under the pressure of the yarn extrusion supporting part; through the drive of the air bag 5222, the air is buffered, so that the lifting process of the support rod 521 is smoother, the tightness variation process of yarns is stable, and the probability of yarn breakage is greatly reduced.

The product form of the present invention is not limited to the embodiments and examples shown in the present application, and any suitable changes or modifications of the similar ideas should be made without departing from the patent scope of the present invention.