CN210561058U - Yarn nozzle mechanism for flat knitting machine, yarn nozzle driving device and flat knitting machine - Google Patents

Abstract

The utility model discloses a yarn mouth mechanism, yarn mouth drive arrangement and flat knitting machine for flat knitting machine belongs to flat knitting machine technical field, and yarn mouth mechanism includes yarn mouth seat and yarn mouth, and the vertical opposite side of yarn mouth seat is equipped with gyro wheel and elastic component, and the gyro wheel cooperates with the guide rail of fixed horizontal, and the gyro wheel includes the last gyro wheel and the lower gyro wheel that correspond from top to bottom and set up, and the elastic component is equipped with the elasticity portion, and the elasticity portion contacts in at least partial gyro wheel messenger gyro wheel and guide rail keep stable cooperation. The gyro wheel can with the cooperation that the guide rail remains stable under the elastic force effect of elastic component, be favorable to eliminating the clearance between gyro wheel and the guide rail, stability when improving yarn mouth mechanism and erectting on the day pole through the cooperation of gyro wheel with the guide rail to be favorable to improving the stability when yarn mouth mechanism moves along horizontal round trip for the day pole.

Description

Yarn nozzle mechanism for flat knitting machine, yarn nozzle driving device and flat knitting machine

Technical Field

The utility model relates to a flat knitting machine technical field especially relates to a yarn mouth mechanism for flat knitting machine, the utility model discloses still relate to an adopt the yarn mouth drive arrangement of aforementioned yarn mouth mechanism, in addition, the utility model discloses still relate to a flat knitting machine who adopts aforementioned yarn mouth drive arrangement.

Background

A flat knitting machine is one of knitting machines, generally refers to a machine which uses a transverse knitting needle bed to perform knitting, and is an automatic knitting machine with high technical content in the knitting machines. Among them, the yarn feeder is an important member of a flat knitting machine, and is a structure for guiding a yarn into a knitting.

A yarn nozzle component of an existing flat knitting machine is generally erected on a top rod through the matching of a roller and a guide rail, and the yarn nozzle component is driven by a transmission mechanism to move transversely and back and forth relative to the top rod. Due to the influence of factors such as assembly clearance and abrasion, the stability of the matching between the roller and the guide rail cannot be ensured, and then the stability of the yarn nozzle assembly in the process of moving back and forth cannot be ensured, so that the adverse effect on the knitting quality of the flat knitting machine can be caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects existing in the prior art, the utility model provides a yarn nozzle mechanism for a flat knitting machine, which can ensure the stable matching of the roller of the yarn nozzle mechanism and the guide rail on the top rod.

In order to realize the technical purpose, the utility model provides a pair of a yarn mouth mechanism for flat knitting machine, including yarn mouth seat and yarn mouth, the yarn mouth is connected in the vertical one side of yarn mouth seat and lie in the yarn mouth seat, the vertical opposite side of yarn mouth seat is equipped with gyro wheel and elastic component, gyro wheel and the cooperation of the fixed horizontal guide rail, and the gyro wheel includes the last gyro wheel and the lower gyro wheel that correspond the setting from top to bottom, and the elastic component is equipped with the elasticity portion, and the elasticity portion contacts and makes gyro wheel and guide rail keep stable cooperation in at least partial gyro wheel.

Preferably, the roller contacted with the elastic part is arranged on the yarn mouth seat through the support, the support is arranged on the other vertical side of the yarn mouth seat and can tilt and rotate up and down, the roller contacted with the elastic part is rotatably arranged at one end of the support, and the elastic part is contacted with the other end of the support.

Preferably, the roller contacted with the elastic part is arranged on the support through a pin shaft, the pin shaft is fixed at one end of the support, the roller is rotatably sleeved on the pin shaft, a limiting long hole extending vertically is formed in the yarn nozzle seat, and one end of the pin shaft is inserted into the limiting long hole.

Preferably, the elastic member is a flat spring, and both end portions of the flat spring are elastic portions; or, the elastic part is a torsion spring provided with two support legs, and the two support legs are elastic parts.

Preferably, the upper roller and the lower roller are arranged at intervals along the transverse direction, and two elastic parts of the elastic part are respectively contacted with the two lower rollers or the two upper rollers.

Preferably, the yarn mouth seat is provided with a supporting part for supporting the elastic part; and/or a limiting part matched with the elastic part is arranged on the support.

Preferably, the yarn feeder is connected to the yarn feeder seat through a yarn feeder handle, a positioning long groove extending vertically is formed in one vertical side of the yarn feeder seat, the yarn feeder handle is connected to the yarn feeder seat through a fastening piece, the upper portion of the yarn feeder handle is located in the positioning long groove, and the yarn feeder is connected to the lower portion of the yarn feeder handle through the fastening piece.

Preferably, one side of the yarn nozzle seat, which is provided with the roller, is also provided with a belt pressing plate, and the belt pressing plate is connected to the yarn nozzle seat through a fastening piece.

The utility model also provides a yarn mouth drive arrangement, including aforementioned a yarn mouth mechanism for flat knitting machine.

The utility model also provides a flat knitting machine, including frame and needle bed base, the needle bed base is transversely arranged in the frame, flat knitting machine still includes aforementioned yarn mouth drive arrangement, and yarn mouth drive arrangement's yarn mouth mechanism can be for the needle bed base along horizontal round trip movement.

After the technical scheme is adopted, the utility model has the advantages of as follows:

1. the utility model provides a yarn mouth mechanism for flat knitting machine adds and has established the elastic component, the elastic component's elasticity portion contacts in at least partial gyro wheel, the gyro wheel can with guide rail remain stable's cooperation under the elastic action of elastic component, be favorable to eliminating the clearance between gyro wheel and the guide rail, stability when the cooperation that improves yarn mouth mechanism through gyro wheel and guide rail is erect on the day pole to be favorable to improving yarn mouth mechanism for the stability of day pole when along horizontal round trip movement.

2. The roller matched with the elastic part is arranged on the yarn nozzle seat through the support, the elastic force of the elastic part acts on one end of the support, and the support warps and rotates under the action of the elastic force to drive the roller at the other end to move up and down, so that the roller can be stably matched with the guide rail. The elastic part enables the roller and the guide rail to be stably matched through the lever action of the support, and the matching structure is reasonable in arrangement and can well meet the use requirement.

3. The gyro wheel is rotatable through the round pin axle to be located on the support, and the one end of round pin axle is inserted and is located the spacing slot hole on the yarn mouth seat, and the cooperation through round pin axle and spacing slot hole makes the gyro wheel receive effectual spacing in the removal under the elastic component spring action, is favorable to improving the stability when the gyro wheel reciprocates to also be favorable to improving the stability when yarn mouth mechanism moves along horizontal round trip movement.

4. The elastic part can adopt a flat spring or a torsion spring. When a flat spring is used, the two ends of the flat spring are elastic parts. When a torsion spring is used, the two support legs of the torsion spring are elastic parts. The two elastic parts of the elastic part are respectively contacted with the two lower rollers, or the two end parts of the elastic part are respectively contacted with the two upper rollers. The concrete matching structure between the elastic part and the roller is reasonably arranged, and the use requirement of keeping the roller and the guide rail stably matched is met.

5. The yarn mouth seat is provided with the supporting part, the elastic piece is arranged on the yarn mouth seat through the matching with the supporting part, and the matching structure between the elastic piece and the yarn mouth seat is reasonably arranged to enable the elastic piece and the yarn mouth seat to meet the use requirement. Set up spacing portion on the support, the elastic component's elastic component is favorable to guaranteeing the stability of contact between elastic component and the support through the cooperation contact with spacing portion in the support to be favorable to improving the elastic component and drive the gyro wheel through the support and reciprocate and keep complex stability with the guide rail.

6. The yarn nozzle is connected to the yarn nozzle seat through the yarn nozzle handle, the upper portion of the yarn nozzle handle is located in the positioning long groove in the yarn nozzle seat, and therefore the stability of the yarn nozzle handle connected to the yarn nozzle seat is improved, and the stability of the yarn nozzle after installation is improved. When the height of the yarn nozzle handle needs to be adjusted, the positioning long groove has a guiding function, and the adjusting difficulty is convenient to reduce.

7. The transmission belt of the transmission mechanism for driving the yarn nozzle mechanism to move back and forth along the transverse direction is positioned between the yarn nozzle seat and the belt pressing plate, and the belt pressing plate is connected with the yarn nozzle seat through the fastener to realize the connection between the yarn nozzle seat and the transmission belt so that the transmission belt can smoothly drive the yarn nozzle mechanism to move back and forth along the transverse direction.

Drawings

FIG. 1 is a schematic view of a day pole according to an embodiment of the present invention;

FIG. 2 is a side view of a day pole according to an embodiment of the present invention;

fig. 3 is a schematic view of a baffle according to a first embodiment of the present invention;

fig. 4 is a schematic view of a second yarn feeder mechanism according to an embodiment of the present invention;

fig. 5 is an exploded view of a part of the structure of a second yarn feeder mechanism according to an embodiment of the present invention;

fig. 6 is an exploded view of a yarn feeder seat, a yarn feeder handle, and a yarn feeder in a second yarn feeder mechanism according to an embodiment of the present invention;

fig. 7 is a schematic view of a support in a second yarn feeder mechanism according to an embodiment of the present invention;

FIG. 8 is a schematic view of a pressing plate in a second yarn feeder mechanism according to an embodiment of the present invention;

fig. 9 is a schematic view of a three-yarn-nozzle driving device according to an embodiment of the present invention;

fig. 10 is a schematic view of a power mechanism and a transmission mechanism in a three-yarn-nozzle driving device according to an embodiment of the present invention;

fig. 11 is a schematic view of a power mechanism and a fixing base in the three-nozzle driving device according to the embodiment of the present invention;

fig. 12 is an enlarged view at a in fig. 11.

In the figure, 100-day rod, 101-belt groove, 102-upper roller groove, 103-lower roller groove, 104-convex strip, 105-upper support arm, 106-lower support arm, 107-upper fixing groove, 108-lower fixing groove, 109-upper limiting groove, 1010-lower limiting groove, 110-upper guide rail, 120-lower guide rail, 130-baffle, 131-upper lug, 132-lower lug, 200-yarn mouth mechanism, 210-yarn mouth seat, 211-limiting long hole, 212-supporting boss, 213-bulge, 214-positioning long groove, 220-yarn mouth, 221-second connecting hole, 222-limiting baffle strip, 223-limiting long groove, 230-upper roller, 240-lower roller, 250-flat spring, 261-first pin shaft, 262-second pin shaft, 263-axis screw, 270-support, 271-limit step, 280-yarn nozzle handle, 281-first connecting hole, 290-belt pressing plate, 291-tooth-shaped part, 300-power mechanism, 310-motor, 320-output wheel, 330-output belt, 340-driving wheel, 350-driving shaft, 400-driving mechanism, 410-driving belt, 420-primary pulley, 430-secondary pulley, 440-driven shaft, 441-mounting part, 442-limit convex ring, 500-needle bed base, 600-fixing seat, 610-convex seat, 611-mounting long hole, 612-positioning hole, 620-positioning screw, 710-support seat, 720-side cover plate and 730-upper cover plate.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments. It is to be understood that the following terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like are used in an orientation or positional relationship relative to one another only as illustrated in the accompanying drawings and are used merely for convenience in describing and simplifying the invention, and do not indicate or imply that the device/component so referred to must have a particular orientation or be constructed and operated in a particular orientation and therefore should not be considered as limiting the invention.

Example one

As shown in fig. 1 to 3, the embodiment of the utility model provides a pair of a day pole 100 for flat knitting machine who provides, day pole 100 transverse arrangement, be equipped with many trough of belt 101 about vertical symmetrical arrangement on the vertical both sides outer wall of day pole 100, trough of belt 101 is along horizontal extension, interval setting about the trough of belt 101 with the outer wall of one side, the top of the vertical both sides outer wall of day pole 100 all is equipped with the last roller groove 102 that is located trough of belt 101 top, the bottom all is equipped with the lower roller groove 103 that is located trough of belt 101 below, the interior roof of going up roller groove 102 is equipped with guide rail 110, the interior bottom wall of lower roller groove 103 is equipped with lower guide rail 120, the tip of the vertical both sides outer wall of day pole 100 all is.

All be equipped with many sand grips 104 on the vertical both sides outer wall of day pole 100 at intervals, sand grip 104 is outwards protruding along the direction of the vertical outer wall of perpendicular to day pole 100, and sand grip 104 is along horizontal extension, and trough of belt 101 is located between two adjacent sand grips 104. In this embodiment, five convex strips 104 are respectively arranged on the outer walls of the two vertical sides of the top bar 100, correspondingly, four belt grooves 101 are respectively arranged on the outer walls of the two vertical sides of the top bar 100, four yarn nozzle mechanisms 200 can be installed on each top bar 100, and the belt grooves 101 on the outer walls of the two sides are symmetrically arranged with respect to the vertical direction. The height of the convex strip 104 protruding outwards relative to the vertical outer wall of the top post 100 is h, the thickness of the convex strip 104 is t, h is more than or equal to 3mm and less than or equal to 10mm, and t is more than or equal to 1.5mm and less than or equal to 8 mm. Specifically, the height h of the rib 104 is preferably set to 6mm, and the thickness t of the rib 104 is preferably set to 3 mm.

The top end of the outer walls of the two vertical sides of the top pole 100 is provided with an upper support arm 105, the bottom end of the outer walls of the two vertical sides of the top pole 100 is provided with a lower support arm 106, the upper support arm 105 and the lower support arm 106 both protrude outwards along the direction perpendicular to the outer walls of the top pole 100, and the upper support arm and the lower support arm both extend along the transverse direction. The upper roller groove 102 is provided between the upper arm 105 and the uppermost protrusion, and the lower roller groove 103 is provided between the lower arm 106 and the lowermost protrusion. In this embodiment, the bottom wall of the upper arm 105 is provided with an upper fixing groove 107 extending in the transverse direction, a part of the upper rail 110 is embedded in the upper fixing groove 107, and the upper rail 110 is mounted on the top rail 100 by being engaged with the upper fixing groove 107. The top wall of the lower arm 106 is provided with a lower fixing groove 108 extending in the transverse direction, a part of the lower rail 120 is embedded in the lower fixing groove 108, and the lower rail 120 is mounted on the roof rail 100 by being engaged with the lower fixing groove 108. Preferably, the upper and lower fixing grooves 107 and 108 are dovetail grooves, and the vertical cross-sectional shapes of the upper and lower guide rails 110 and 120 are triangular.

In order to improve the stability of the connection of the baffle 130 to the top post 100, the upper end of the upper arm 105 is provided with an upper limit groove 109 for the partial insertion of the baffle 130, and the lower end of the lower arm 106 is provided with a lower limit groove 1010 for the partial insertion of the baffle 130. The baffle 130 is fixedly connected to the roof rod 100 by bolts, the upper end of the baffle 130 is embedded into the upper limit groove 109, and the lower end is embedded into the lower limit groove 1010.

In order to improve the lateral stability of the upper and lower guide rails 110, 120, the upper portion of the blocking plate 130 is provided with an upper convex block 131 which protrudes toward the upper rod 100 and is caught in the upper roller groove 102, and the lower portion of the blocking plate 130 is provided with a lower convex block 132 which protrudes toward the upper rod 100 and is caught in the lower roller groove 103. The ends of the two ends of the upper rail 110 respectively abut against the upper protrusions 131 of the two side guards 130, and the ends of the two ends of the lower rail 120 respectively abut against the lower protrusions 132 of the two side guards 130.

A the part that is arranged in driving yarn mouth mechanism along the drive belt of horizontal round trip movement is arranged in the trough of belt, makes each drive belt receive effectual spacing through the trough of belt, avoids the mutual interference between the drive belt to lead to the drive belt to drive yarn mouth mechanism along the circumstances of horizontal round trip movement smoothly. The yarn nozzle mechanism is movably erected on the top rod through the matching of the idler wheels and the upper and lower guide rails, so that the processing difficulty and the assembling difficulty of the top rod and the yarn nozzle mechanism are conveniently reduced. The baffle can be used for effectively limiting the moving stroke of the yarn feeder mechanism, so that the yarn feeder mechanism is prevented from being separated from the top rod, and the stability of the yarn feeder mechanism is improved. The baffle still has limiting displacement to the drive belt, is favorable to improving the stability of drive belt.

It is understood that the height h of the ribs 104 may be set to other reasonable height values such as 3mm, 4mm, 5mm, 5.5mm, 6.2mm, 7mm, 8mm, 9mm, 10mm, etc.

It is understood that the thickness t of the rib 104 may also be set to other reasonable thickness values such as 1.5mm, 2mm, 2.9mm, 3.1mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 7.5mm, 8mm, etc.

It is understood that the cross-sectional shape of the upper and lower guide rails 110, 120 along the vertical direction may also be isosceles trapezoid or other reasonable shapes.

It should be understood that the specific number of the belt grooves 101 on the outer walls of the two vertical sides of the top bar 100 is not limited to four as described above or shown in the drawings, and may be two, three, five or other reasonable numbers. Accordingly, the specific number of the convex strips 104 is not limited to the five shown in the above description or the drawings, and may be set to other reasonable numbers such as three, four, six, and the like.

Example two

As shown in fig. 4 to 8, a second embodiment of the present invention provides a yarn feeder mechanism 200 for a flat knitting machine, including a yarn feeder base 210 and a yarn feeder 220, where the yarn feeder 220 is connected to the yarn feeder base 210 and located on a vertical side of the yarn feeder base 210. The yarn mouth seat 210 is provided with a roller and an elastic part at the other vertical side, the roller is matched with a fixed transverse guide rail, the roller comprises an upper roller 230 and a lower roller 240 which are correspondingly arranged up and down, and the elastic part is provided with an elastic part which is contacted with at least part of the roller to ensure that the roller is stably matched with the guide rail.

In this embodiment, two upper rollers 230 and two lower rollers 240 are provided at intervals in the transverse direction, the two upper rollers 230 are engaged with the upper guide rail 110 fixed to the top rail 100 in the first embodiment, and the two lower rollers 240 are engaged with the lower guide rail 120 fixed to the top rail 100 in the first embodiment.

The elastic member is a flat spring 250, two ends of the flat spring 250 are elastic portions, and the two elastic portions of the flat spring 250 are respectively in contact with the two lower rollers 240. In this embodiment, the two upper rollers 230 are both disposed on the yarn feeder base 210 through the first pin 261, the first pin 261 is fixed on the yarn feeder base 210 through the shaft hole, and the upper rollers 230 are rotatably sleeved on the first pin 261. The two lower rollers 240 are both arranged on the yarn mouth seat 210 through the support 270, the support 270 is arranged on the yarn mouth seat 210 through the axial position screw 263, the axial position screw 263 passes through the approximate middle part of the support 270 through the axial hole in a matched mode and is fixed on the yarn mouth seat 210, the axial position screw is in clearance fit with the hole in the support, and the support 270 can tilt up and down. The lower roller 240 is rotatably disposed on the support 270 through a second pin shaft 262, the second pin shaft 262 is fixed on one end of the support 270 away from the vertical center of the yarn feeder base 210 through the shaft hole, and the lower roller 240 is rotatably sleeved on the second pin shaft 262.

In order to improve the stability of the support 270 when tilting up and down to drive the lower roller 240 to move up and down, the yarn feeder seat 210 is provided with a limit long hole 211 extending vertically, and one end of the second pin shaft 262 facing the yarn feeder seat 210 protrudes out of the support 270 and is inserted into the limit long hole 211. In order to improve the stability of the support 270 in cooperation with the elastic member, the support 270 is provided with a limiting portion in cooperation with the end portion of the flat spring 250, in this embodiment, the limiting portion is specifically an L-shaped limiting step 271, and the limiting step 271 is disposed on the bottom wall of the support 270 facing the vertical center side of the yarn feeder seat 210.

In order to effectively support the elastic member, two elastic portions of the elastic member can keep the lower roller 240 in effective fit with the lower guide rail 120 through the support 270, and a support portion for supporting the elastic member is provided on the yarn feeder base 210. In this embodiment, the middle portion of the lower portion of the yarn feeder seat 210 on the side provided with the rollers is provided with a support boss 212 formed to protrude outward, and two supports 270 for installing the two lower rollers 240 are symmetrically distributed on two lateral sides of the support boss 212. The middle part of the top of the supporting boss 212 is provided with a protrusion 213 protruding upwards, the middle part of the flat spring 250 is abutted against the protrusion 213, the flat spring is approximately in an inverted V shape, and the end parts of the two ends of the flat spring 250 are respectively abutted against the limiting steps 271 of the two supports 270.

The yarn feeder 220 is connected to the yarn feeder base 210 by a yarn feeder handle 280, and the yarn feeder handle 280 is connected to the yarn feeder base 210 by a screw. In order to improve the stability of the yarn feeder handle 280 connected to the yarn feeder seat 210, a positioning long groove 214 extending vertically is formed in the middle of one side of the yarn feeder seat 210, which is opposite to the top bar 100, and the upper part of the yarn feeder handle 280 is located in the positioning long groove 214. The nozzle handle 280 is provided with a first connection hole 281 for passing a screw therethrough, and in this embodiment, the first connection hole 281 is preferably configured as a long hole vertically arranged in a length direction. When the height position of the nozzle handle 280 needs to be adjusted, the positioning long groove 214 has a guiding function.

The yarn feeder 220 is connected to the lower part of the yarn feeder handle 280 by a screw, and the top end of the yarn feeder 220 is provided with a second connecting hole 221 through which the screw passes. In this embodiment, the second connection hole 221 is preferably provided as a long hole. Two sides of the top end of the yarn nozzle 220 are bent to form long limiting barrier strips 222, a limiting long groove 223 matched with the lower part of the yarn nozzle handle 280 is formed between the two limiting barrier strips 222, and the lower part of the yarn nozzle handle 280 is inserted into the limiting long groove 223.

In order to stably connect the yarn feeder mechanism 200 to the transmission belt of the transmission mechanism, a belt pressing plate 290 is further disposed on one side of the yarn feeder base 210 where the roller is disposed, the transmission belt is located between the yarn feeder base 210 and the belt pressing plate 290, and the belt pressing plate 290 is connected to the yarn feeder base 210 through a screw to realize the fixed connection between the yarn feeder base 210 and the transmission belt, so that the transmission belt can smoothly drive the yarn feeder mechanism 200 to move back and forth along the transverse direction. In this embodiment, the belt pressing plates 290 are preferably arranged in pairs, with the pairs of belt pressing plates 290 being arranged side by side in the transverse direction. In order to improve the stability of the engagement between the yarn nozzle holder 210 and the transmission belt, the side of the belt pressing plate 290 facing the yarn nozzle holder 210 is preferably provided with a tooth-shaped portion 291 engaged with the transmission belt, and the tooth-shaped portion 291 is engaged with a partial transmission tooth on the transmission belt 410.

When a gap exists between the upper roller 230 or the lower roller 240 and the corresponding guide rail, the support 270 tilts under the elastic force of the flat spring 250 and drives the lower roller 240 to move downwards, the vertical distance between the upper roller 230 and the lower roller 240 is increased, and the gap between the roller and the guide rail is eliminated by utilizing the downward movement stroke of the lower roller 240, so that the roller and the guide rail are kept in stable fit.

It can be understood that the elastic member may also be a torsion spring, which is provided with two legs, and two right angles of the torsion spring are elastic portions. At this time, the supporting portion for supporting the elastic member on the yarn feeder seat 210 is preferably provided as a supporting cylinder, and the limiting portion on the support 270, which is engaged with the elastic portion, is preferably provided as a limiting groove. The torsional spring is sleeved on the supporting cylinder, and the two support legs of the torsional spring are respectively clamped in the limiting grooves in the bottom walls of the two supports 270.

It can be understood that, the two upper rollers 230 may also be disposed on the yarn mouth seat 210 through the support 270, at this time, the supporting boss 212 is disposed at the middle portion of the upper portion of one side of the yarn mouth seat 210 facing the top beam 100, the top walls of the two supports 270 facing the vertical center side of the yarn mouth seat 210 are both provided with a limiting step 271, the flat spring 250 is disposed on the yarn mouth seat 210 in a substantially V-shape, and the two elastic portions of the flat spring 250 respectively abut against the limiting steps 271 of the two supports 270.

It is understood that the two upper rollers 230 and the two lower rollers 240 may be both provided on the nozzle holder 210 to be movable up and down through the support 270, in this case, the two elastic members are provided, wherein the two elastic portions of one elastic member are respectively in contact with the two supports on which the upper rollers 230 are mounted, and the two elastic portions of the other elastic member are respectively in contact with the two supports on which the lower rollers 240 are mounted.

EXAMPLE III

As shown in fig. 9 to 12, the third embodiment of the present invention provides a yarn feeder driving device, which includes a top bar 100, a power mechanism 300, a transmission mechanism 400 and yarn feeder mechanisms 200, wherein the top bar 100 is transversely erected above a needle bed base 500 and is provided with a plurality of yarn feeders at parallel intervals along the front-back direction, and the same top bar 100 is provided with a plurality of yarn feeder mechanisms 200 and transmission mechanisms 400 corresponding to the yarn feeder mechanisms one to one. The power mechanisms 300 and the transmission mechanisms 400 are arranged in a one-to-one correspondence manner, each transmission mechanism 400 comprises a transmission belt 410 which is arranged around the corresponding top beam 100 and is in transmission connection with the corresponding power mechanism 300, the yarn nozzle mechanisms 200 are arranged on the vertical outer walls of the top beams 100 and are connected to the transmission belts 410, the power mechanisms 300 can drive the yarn nozzle mechanisms 200 to move back and forth along the transverse direction through the transmission mechanisms 400, and the power mechanisms 300 corresponding to the same top beam 100 are respectively arranged on the outer sides of the two ends of the top beam 100.

In this embodiment, the top bar 100 is the top bar 100 of the first embodiment, the yarn feeder mechanism 200 is the yarn feeder mechanism 200 of the second embodiment, and a part of the belt 410 is located in the belt groove 101 of the top bar 100. Each top rod 100 is provided with four yarn nozzle mechanisms 200, the four yarn nozzle mechanisms 200 are evenly distributed on two vertical sides of the top rod 100, and the power mechanism 300 and the transmission mechanism 400 corresponding to each top rod 100 are also respectively provided with four.

The transmission mechanism 400 further includes a primary pulley 420 and a secondary pulley 430 respectively disposed at the outer sides of the two ends of the crown bar 100, and the transmission belt 410 is sleeved on the primary pulley and the secondary pulley 430. In this embodiment, the transmission belts 410 of the four transmission mechanisms 400 corresponding to the same top rod 100 are disposed around the top rod 100 and are spaced apart from each other in parallel up and down, and the driving and driven pulleys 420 and 430 of the four transmission mechanisms 400 are uniformly distributed at the outer sides of the two ends of the top rod 100.

The power mechanism 300 includes a motor 310, an output wheel 320, an output belt 330, a transmission wheel 340 and a vertically disposed transmission shaft 350, the motor 310 is vertically disposed, a motor shaft extends upward, the output wheel 320 is fixedly sleeved on the axially vertical motor shaft, the transmission shaft 350 is axially vertical and is located between the end of the top lever 100 and the motor 310, the transmission wheel 340 and the primary pulley 420 are fixedly sleeved on the transmission shaft 350 in an up-and-down parallel manner, and the output belt 330 is sleeved on the output wheel 320 and the transmission wheel 340. When the motor 310 works, the output wheel 320, the output belt 330, the transmission wheel 340 and the transmission shaft 350 drive the main belt wheel 420 to rotate, and the main belt wheel 420 drives the transmission belt 410 to rotate, so that the purpose that the power mechanism 300 drives the yarn nozzle mechanism 200 to move back and forth along the transverse direction relative to the top bar 100 through the transmission mechanism 400 is achieved.

In this embodiment, the primary pulley 420 and the corresponding power mechanism 300 engaged with the first and third top-down belts 410 are disposed on the left side of the top bar 100, the secondary pulley 430 is disposed on the right side of the top bar 100, the primary pulley 420 and the corresponding power mechanism 300 engaged with the second and fourth top-down belts 410 are disposed on the right side of the top bar 100, and the secondary pulley 430 is disposed on the left side of the top bar 100. The power mechanisms 300 corresponding to the same top bar and located at the same side of the top bar are arranged in a stepped manner in which the top bar and the bottom bar are vertically distributed, so that the overall structure is more compact.

In order to install the primary pulley 420, the secondary pulley 430 and the power mechanism 300, the fixing seats 600 are respectively disposed at the outer sides of the two ends of the top pole 100, and the power mechanism 300, the primary pulley 420 and the secondary pulley 430 are respectively disposed on the fixing seats 600 at the corresponding sides. The motor 310 is vertically fixed on the fixing base 600, the transmission shaft 350 is rotatably disposed on the fixing base 600 through a bearing, and the driven shaft 440 is rotatably disposed on the fixing base 600 through the driven shaft 430. In order to reasonably reduce the vertical overall dimension of the power mechanism, the fixing seat 600 is provided with a receiving groove for receiving the output belt 330, and the output belt is located in the receiving groove.

In this embodiment, a convex seat 610 protruding toward the pole 100 and used for installing the driven shaft 440 is disposed on one side of the fixing seat 600 facing the pole 100, an installation long hole 611 and a positioning hole 612 extending in the transverse direction are disposed on the convex seat 610, the positioning hole 612 is located on one side of the installation long hole 611 facing the pole 100 and is communicated with the installation long hole 611, an installation portion 441 engaged with the installation long hole 611 is disposed on the lower portion of the driven shaft 440, and a limit convex ring 442 is disposed on the upper end of the installation portion 441. The driven shaft 440 is axially vertically mounted on the boss 610, the driven shaft 440 is rotatably sleeved on the upper portion of the driven shaft 440 through a bearing from the belt wheel 430, the mounting portion 441 is located in the mounting long hole 611, the limiting convex ring 442 abuts against the top surface of the boss 610, and the driven shaft is axially limited by screwing a nut arranged additionally at a position where the driven shaft 440 extends out of the mounting long hole 611 downwards. The positioning hole 612 is internally provided with a positioning screw 620, the positioning screw 620 is screwed into the positioning hole 612 from one side of the top rod 100 to one side of the fixed seat 600, and the end part of the positioning screw 620 extending into the mounting long hole 611 props against the driven shaft 440 along the direction which is transversely far away from the top rod, so that the driven shaft is subjected to certain pretightening force, and the situation that the driven shaft is inclined under the action of the transmission belt is avoided. The transverse specific position of the driven shaft 440 in the installation long hole 611 can be adjusted through the positioning screw 620, so that the purpose of tensioning the transmission belt can be achieved by adjusting the specific transverse position of the driven shaft.

Because the needle bed base is generally provided with a machine head (not shown in the figure) which spans the yarn nozzle driving device in the front-back direction, the machine head comprises an overbridge, in order to avoid the power mechanisms positioned at the outer sides of the two ends of the overbridge from blocking the action of the machine head separated from the yarn nozzle driving device, the top surfaces of all the transmission mechanisms are not higher than the top surface of the overbridge, and the total width of all the transmission mechanisms positioned at the same side in the front-back direction is smaller than the inner width of the overbridge. Make drive mechanism all carry out reasonable dodging to the aircraft nose on vertical and front and back direction, the aircraft nose can break away from yarn mouth drive arrangement along transversely smoothly, need not to demolish power unit or dismantle the aircraft nose, greatly reduced the maintenance work load of aircraft nose. In this embodiment, since the transmission mechanism is disposed on the fixing base 600, the top surface of the fixing base 600 is not higher than the top surface of the power mechanism, and the width of the fixing base in the front-back direction is not greater than the total width of all the transmission mechanisms on the same side in the front-back direction. Wherein, the total width of all transmission mechanisms on the same side in the front-back direction refers to the distance from the front side wall of the front-most motor to the back side wall of the back-most motor. In order to erect the machine head, a machine head guide rail which is arranged along the transverse direction is arranged on the lower side of the top surface of the needle bed base 500, a guide rail groove matched with the machine head guide rail is arranged at the bottom of the overpass, the machine head can be erected on the needle bed base in a reciprocating mode along the transverse direction through the matching of the guide rail groove and the machine head guide rail, and the machine head stretches across the yarn nozzle driving device in the front-back direction.

In order to mount the top bar 100 and the fixing base 600, the two ends of the top of the needle bed base 500 are respectively provided with a supporting seat 710, and the top bar and the fixing base are fixed on the supporting seats through fasteners. The front side and the rear side of the supporting seat 710 are respectively provided with a side cover plate 720 for covering the electric wires, and the side cover plates 720 at the two sides are fixed on the supporting seat 710 through screws. The top of the fixing base 600 is provided with an upper cover plate 730 for covering the power mechanism 300, and the upper cover plate 730 is fixed on the fixing base 600 by screws. Preferably, the top surface of the upper cover plate 730 is not higher than the top surface of the roof rail 100.

When the flat knitting machine works, if a certain yarn nozzle is needed to guide yarn to a knitting needle, the motor 310 of the power mechanism 300 corresponding to the yarn nozzle mechanism 200 works, the motor 310 drives the main belt wheel 420 to rotate through the output wheel 320, the output belt 330, the transmission wheel 340 and the transmission shaft 350, the main belt wheel 420 drives the transmission belt 410 to rotate, when the transmission belt 410 drives the yarn nozzle mechanism 200 to move to a yarn feeding position, the motor stops working, and the yarn nozzle feeds the yarn to the knitting needle. When the machine head needs to be disassembled, the machine head can be directly separated from the yarn nozzle driving device along the moving direction, and the maintenance workload is greatly reduced.

It is understood that the number of the upper rods 100 of the yarn feeder driving device may be two, four, six, etc. in a reasonable number.

It is understood that the number of the yarn nozzle mechanisms 200 on the same day lever 100 is not limited to four as described above or shown in the drawings, and may be set to two, six, or the like as appropriate.

It will be appreciated that the output belt 330 and the transmission belt 410 are preferably toothed belts, and accordingly, the output wheel 320, the transmission wheel 340, the primary pulley 420 and the secondary pulley 430 are preferably toothed pulleys.

It is understood that the head can be a head in the structure of the existing flat knitting machine, and the details are not repeated.

It will be understood that the cooperation between the head and the bed base can be made with reference to known structures.

Example four

The embodiment of the utility model provides a flat knitting machine, including frame, needle bed base 500 and aircraft nose, needle bed base 500 is horizontal in the frame. The flat knitting machine further includes the yarn carrier driving device described in the third embodiment, the yarn carrier driving device is provided above the needle bed base 500, and the head is erected on the needle bed base and provided across the yarn carrier driving device in the front-rear direction. The top bar is the top bar 100 of the first embodiment, and the yarn feeder mechanism is the yarn feeder mechanism 200 of the second embodiment.

The top surface of the needle bed base 500 is provided with two needle beds which are symmetrically arranged in a splayed shape, the needle beds are provided with a plurality of inserting sheets which are arranged side by side at intervals, a tooth mouth piece is arranged below the front end of each inserting sheet, a knitting needle is arranged between every two adjacent inserting sheets, and a sinker is arranged below the tooth mouth piece. The power mechanism 300 of the yarn feeder driving device drives the yarn feeder mechanism 200 to move back and forth in the transverse direction relative to the top bar 100 through the transmission mechanism 400, and the yarn feeder 220 guides the yarn to the knitting needle below.

In addition to the above preferred embodiments, the present invention has other embodiments, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope defined by the appended claims.

Claims (10)

1. The utility model provides a yarn mouth mechanism for flat knitting machine, includes yarn mouth seat and yarn mouth, and the yarn mouth is connected in the vertical one side of yarn mouth seat and lie in the yarn mouth seat, its characterized in that, the vertical opposite side of yarn mouth seat is equipped with gyro wheel and elastic component, and the gyro wheel cooperates with fixed horizontal guide rail, and the gyro wheel includes the last gyro wheel and the lower gyro wheel that correspond the setting from top to bottom, and the elastic component is equipped with the elasticity portion, and the contact of elasticity portion makes gyro wheel and guide rail keep stable cooperation in at least partial gyro wheel.

2. The yarn feeder mechanism according to claim 1, wherein the roller in contact with the elastic portion is disposed on the yarn feeder base through a support, the support is disposed on the other vertical side of the yarn feeder base and can tilt up and down, the roller in contact with the elastic portion is rotatably disposed at one end of the support, and the elastic portion is in contact with the other end of the support.

3. The yarn feeder mechanism according to claim 2, wherein the roller contacting the elastic portion is provided on the support through a pin fixed to one end of the support, the roller is rotatably fitted on the pin, a limit slot extending in a vertical direction is provided on the yarn feeder base, and one end of the pin is inserted into the limit slot.

4. The yarn feeder mechanism according to claim 1, wherein the elastic member is a flat spring, both end portions of the flat spring being elastic portions; or, the elastic part is a torsion spring provided with two support legs, and the two support legs are elastic parts.

5. The yarn feeder mechanism according to claim 4, wherein the number of the upper and lower rollers is two, and the two elastic portions of the elastic member contact the two lower rollers or the two upper rollers, respectively.

6. The yarn feeder mechanism according to claim 2, wherein the yarn feeder base is provided with a support portion for supporting the elastic member; and/or a limiting part matched with the elastic part is arranged on the support.

7. The yarn feeder mechanism according to claim 1, wherein the yarn feeder is connected to the yarn feeder base through a yarn feeder handle, a positioning elongated slot extending vertically is formed in one vertical side of the yarn feeder base, the yarn feeder handle is connected to the yarn feeder base through a fastening member, the upper portion of the yarn feeder handle is located in the positioning elongated slot, and the yarn feeder is connected to the lower portion of the yarn feeder handle through the fastening member.

8. The yarn nozzle mechanism according to any one of claims 1-7, wherein the side of the yarn nozzle base provided with the roller is further provided with a belt pressing plate, and the belt pressing plate is connected to the yarn nozzle base through a fastening piece.

9. A nozzle driving device characterized by comprising the nozzle mechanism for a flat knitting machine according to any one of claims 1 to 8.

10. A flat knitting machine comprising a frame and a needle bed base disposed transversely on the frame, characterized in that the flat knitting machine further comprises the yarn feeder driving device of claim 9, wherein a yarn feeder mechanism of the yarn feeder driving device is movable back and forth transversely with respect to the needle bed base.

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