CN111945287A

CN111945287A - Needle bed device of flat knitting machine and flat knitting machine

Info

Publication number: CN111945287A
Application number: CN202010851688.XA
Authority: CN
Inventors: 付洪平
Original assignee: Zhejiang Fengfan Nc Machinery Co ltd
Current assignee: Zhejiang Fengfan Nc Machinery Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2020-11-17
Anticipated expiration: 2040-08-21
Also published as: CN111945287B

Abstract

The invention discloses a needle bed device of a flat knitting machine and the flat knitting machine, and belongs to the technical field of flat knitting machines. The number of needle beds is not required to be increased, and the assembly requirement of the needle bed device is favorably reduced. The switching of the operation of the upper knitting needle and the lower knitting needle can be realized through the matching of the switching stitch, the transition stitch and the push sheet, and the structure of the needle bed device is favorably simplified.

Description

Needle bed device of flat knitting machine and flat knitting machine

Technical Field

The invention relates to the technical field of flat knitting machines, in particular to a needle bed device of a flat knitting machine.

Background

The existing flat knitting machine generally adopts a double-needle-position structure, a front needle bed and a rear needle bed are symmetrically arranged in a splayed shape, and knitting needles on the two needle beds are also arranged in a splayed shape. When knitting a sweater, a flat knitting machine with a double-needle-position structure generally adopts a knitting mode of garment piece forming, and the knitted garment pieces are sewn to form a whole sweater. The sewing quality of the sweater depends on the skill level of a sewing worker, so that the production efficiency and the quality of the sweater are not improved. When a flat knitting machine with a double-needle structure performs full-forming knitting, the requirement of full-forming knitting can be met only by adopting a needle-separating knitting mode, for example, when the flat knitting machine with the double-needle structure with the machine number of E12 performs full-forming knitting, the needle pitch of the machine number of E6 needs to be used, the fabric is difficult to achieve a fine knitting effect, and the flat knitting machine needs a larger knitting width to meet the size requirement of the knitted fabric. Therefore, the flat knitting machine with the double-needle-position structure has the defects of small knitting range, low knitting efficiency and the like when carrying out full-forming knitting.

The flat knitting machine with the four-needle position structure can realize full-forming knitting, namely, the body, the sleeves and the collar of the sweater can be completely knitted and formed, and sewing is not needed subsequently, so that the production efficiency and the quality of the sweater are improved. The flat knitting machine with the four-needle position structure is characterized in that an upper layer knitting needle and a lower layer knitting needle are respectively arranged on a front needle bed and a rear needle bed, the upper layer knitting needle and the lower layer knitting needle can perform operations such as knitting, transferring and the like, the upper layer knitting needle and the lower layer knitting needle which are opposite to each other can realize mutual transfer of a coil, and the lower layer knitting needles on two sides can also finish mutual transfer of the coil. The flat knitting machine with the four-needle position structure generally adopts a full-needle knitting mode when carrying out full-forming knitting, the fabric can achieve a fine knitting effect, and because the knitting width required by the full-needle knitting of the flat knitting machine with the four-needle position structure is smaller than the knitting width required by the alternate-needle knitting of the flat knitting machine with the double-needle position structure, the stroke of the machine head during the back and forth movement is greatly shortened, and the knitting efficiency is greatly improved.

In order to install upper and lower layers of knitting needles, some existing flat knitting machines with four-needle position structures generally adopt a four-needle bed structure, namely two vertically distributed needle beds are respectively arranged on the front side and the rear side, an upper layer of knitting needles is arranged on an upper needle bed, and a lower layer of knitting needles is arranged on a lower needle bed. In the structure, the assembly requirement of the needle beds is high, the two needle beds on the same side are difficult to meet the requirement of form and position tolerance when the machine head operates, in addition, the two needle beds on the same side are required to be provided with the needle selection feet, the width of the flat knitting machine is increased, the difficulty of the needle selection mechanism matched with the needle selection feet on the machine head is also increased, and the manufacturing cost of the machine head is high.

Disclosure of Invention

In order to solve the defects in the prior art, the invention provides a needle bed device of a flat knitting machine, which is beneficial to simplifying the structure of the needle bed.

In order to achieve the technical purpose, the needle bed device of the flat knitting machine comprises a needle bed and inserting pieces arranged on the needle bed, wherein the inserting pieces are arranged in parallel along the length direction of the needle bed at intervals, a needle groove is formed between every two adjacent inserting pieces, a lower knitting needle and a lower needle jack are arranged in the needle groove in a front-back mode, a conversion stitch capable of tilting is arranged between the lower knitting needle and the lower needle jack, a partition plate located at the top of the lower knitting needle is further arranged in the needle groove, an upper knitting needle which is obliquely arranged relative to the lower knitting needle is arranged at the top of the partition plate, an upper needle jack capable of swinging up and down is connected to the rear end of the upper knitting needle, a push piece capable of moving up and down is arranged at the bottom of the upper needle jack, a transition stitch capable of moving back and forth is arranged at the bottom of the push piece, the front end of the conversion stitch can be matched with the lower knitting needle or the transition stitch, the transition stitch and the push sheet drive the upper stile stitch to swing upwards.

Preferably, the top of transition stitch is equipped with slope setting and high face of pushing away in the front low back, goes up the straight stitch and is equipped with and lies in knitting needle rear side and convex upward going up straight heel, and transition stitch drives the ejector pad rebound through the cooperation of face of pushing away and ejector pad bottom when moving forward, drives straight stitch upwards to swing when the ejector pad rebound and makes upward straight heel stretch out the needle groove.

Preferably, the push sheet is arranged behind the partition board, the top surface of the push sheet is parallel to the top surface of the partition board, and the top surface of the push sheet and the top surface of the partition board are located on the same plane when the push sheet moves upwards in place.

Preferably, the rear part of the upper knitting needle is provided with a connecting groove and an open groove positioned at the rear side of the connecting groove, the front end of the open groove is communicated with the connecting groove, the rear end of the open groove is open, the front end of the upper straight pin is provided with a connecting bulge matched with the connecting groove, the front part of the upper straight pin extends into the open groove, the connecting bulge is inserted into the connecting groove, and the connecting bulge and the connecting groove adopt an arc-shaped matching structure.

Preferably, the conversion stitch can be warped and connected to a lower needle support, a detachable and matched serial connection structure is arranged between the front end of the conversion stitch and a lower knitting needle, a transition protrusion located on the front side of the lower needle support is arranged on the transition stitch, the conversion stitch can drive the lower knitting needle to move synchronously through the serial connection structure, and the conversion stitch can drive the transition stitch to move forwards through the collision with the transition protrusion.

Preferably, the transition pins are arranged on the bottom side of the rear part of the partition board, and avoidance grooves for avoiding the front ends of the transition pins are arranged on the bottom side of the partition board; and/or the transition stitch is provided with a limiting block protruding downwards, the needle bed device comprises a limiting steel wire penetrating through the insertion sheet, and the limiting steel wire is positioned behind the limiting block.

Preferably, the bottom of each conversion pin is provided with a tilting protrusion, the front end of each lower straight pin is provided with a tilting groove matched with the tilting protrusion, and the conversion pins can be connected to the lower straight pins in a tilting manner through the matching of the tilting protrusions and the tilting grooves; and/or the rear end of the conversion stitch is provided with a conversion butt protruding upwards, the bottom of the conversion stitch or the top of the lower straight stitch is provided with an elastic arm, and the elastic arm is stressed and deformed when the conversion stitch tilts due to the compression of the conversion butt.

Preferably, the insert is provided with a pressing groove positioned at the top of the upper knitting needle, the needle bed device further comprises a strip-shaped pressing plate, and the pressing plate is matched with the pressing groove to penetrate through each insert and is positioned at the top of the upper knitting needle; and/or, the inserted sheet is equipped with the draw-in groove that is located stile stitch rear side, and the needle bed device still includes the card strip of rectangular shape, and the card strip is equipped with a plurality ofly along length direction interval setting and with inserted sheet complex tooth's socket, the card strip through with the draw-in groove cooperation wear through the inserted sheet setting and the part of inserted sheet inlay in the tooth's socket.

Preferably, the needle bed device further comprises magnetic steel, and the magnetic steel is arranged on the needle bed and located at the bottom of the lower knitting needle.

The invention also provides a flat knitting machine, which comprises a needle bed base and the needle bed device of the flat knitting machine, wherein the two needle bed devices are symmetrically distributed on the needle bed base.

After the technical scheme is adopted, the invention has the following advantages:

1. the needle bed device provided by the invention improves the structure of the needle bed device, the partition plate positioned at the top of the lower knitting needle is additionally arranged in the needle groove, the upper knitting needle is arranged at the top of the partition plate, the arrangement of the upper knitting needle and the lower knitting needle is realized by utilizing the partition plate, the number of the needle beds is not required to be increased, and the assembly requirement of the needle bed device is favorably reduced. The lower needle jack can drive the lower knitting needle to move back and forth through the switching stitch, and the lower needle jack can also drive the upper needle jack to swing upwards through the switching stitch, the transition stitch and the push sheet. The operation switching of the upper knitting needle and the lower knitting needle can be realized through the matching of the conversion stitch, the transition stitch and the push sheet, the needle bed device only needs to be provided with the needle selection stitch corresponding to the lower knitting needle, the needle selection stitch corresponding to the upper knitting needle does not need to be additionally arranged, the structure of the needle bed device and the machine head is favorably simplified, and the production cost is favorably reduced.

2. When the transition stitch moves forwards, the push sheet is driven to move upwards through the matching of the push surface and the bottom end of the push sheet, the linkage matching structure between the transition stitch and the push sheet is simple, the assembly is convenient, and the structure between the transition stitch and the push sheet is more compact. When the push sheet moves upwards, the upper lifter pins are driven to swing upwards to enable the upper lifter butts to extend out of the needle grooves, so that the machine head can drive the upper lifter pins to move back and forth through the upper lifter butts, and the purpose that the machine head drives the upper knitting needles to move back and forth through the upper lifter pins is achieved.

3. The top surface of the push piece and the top surface of the partition board are arranged in parallel, when the push piece moves upwards to the position that the top surface of the push piece and the top surface of the partition board are located on the same plane, the push piece moves upwards in place, and the upper supporting pins can stably move back and forth on the track plane formed by combining the top surface of the push piece and the top surface of the partition board, so that the moving stability of the upper supporting pins is improved.

4. The upper needle raising pins are connected to the upper knitting needles through the matching of the connecting protrusions and the connecting grooves, and the matching structure between the upper needle raising pins and the upper knitting needles is simple and convenient to assemble. The connecting bulge and the connecting groove adopt an arc-shaped matching structure, and the upper stile pin can swing up and down by taking the central point of the connecting bulge as a fulcrum. The front part of the upper tappet pin extends into the open slot, the amplitude of the upper tappet pin during up-and-down swinging can be limited through the open slot, the condition that the upper tappet pin swings excessively is avoided, and the structural stability of the upper tappet pin is improved.

5. When the lower knitting needle is driven, the conversion stitch is connected with the lower knitting needle through the serial connection structure, and the lower needle jack can drive the lower knitting needle to synchronously move back and forth through the conversion stitch. When the upper knitting needle is driven, the conversion stitch tilts to enable the serial connection structure to be disengaged, the conversion stitch is separated from the lower knitting needle, the conversion stitch is matched with the transition bulge, and the lower needle jack can drive the transition stitch to move forwards through the matching of the conversion stitch and the transition bulge. The matching structure between the conversion stitch and the lower knitting needle and between the conversion stitch and the transition stitch is simple, and the matching structure of the conversion stitch can be conveniently changed according to knitting requirements.

6. The front end of the transition stitch can move back and forth in the avoiding groove at the bottom side of the partition board, so that the moving stability of the transition stitch is improved, the stroke of the transition stitch in the forward movement process can be limited by the avoiding groove, and the structural stability of the transition stitch is improved. When the transition stitch moves backwards to the limiting block and is close to the limiting steel wire, the transition stitch moves backwards in place, the stroke of the transition stitch during moving backwards is limited by the matching of the limiting block and the limiting steel wire, and the improvement of the structural stability of the transition stitch is facilitated.

7. But the conversion stitch realizes warping through the cooperation of warping the protruding and warping the recess of commentaries on classics and warping the commentaries on classics and is connected in lower straight stitch, and the cooperation simple structure between conversion stitch and the lower straight stitch is convenient for assemble, and the conversion stitch can be used to warp to make a round trip to warp to change as the fulcrum with warping the bellied central point of commentaries on classics. When the conversion butt is pressed to enable the conversion stitch to warp, the elastic arm is stressed and deformed. After the switching needle butt is loosened, the elastic arm can drive the switching stitch to tilt and reset in time while recovering the deformation.

8. The pressing plate and the clamping strip which are arranged by penetrating through the inserting sheet are beneficial to improving the structural stability of the inserting sheet, the condition that the inserted sheet deflects to cause the clamping of a knitting needle or a stitch is avoided, and the integral operation stability of the needle bed device is beneficial to improving. The pressing plate is positioned at the top of the upper knitting needle, has a limiting effect on the upper knitting needle, and is beneficial to improving the structural stability of the upper knitting needle. The clamping strip is located on the rear side of the upper stile stitch, the clamping strip can limit the stroke of the upper stile stitch during backward moving and resetting, and the structural stability of the upper stile stitch is improved.

9. The magnetic steel is arranged on the needle bed, the magnetic steel enables the lower knitting needle to be subjected to magnetic acting force, the bottom surface of the lower knitting needle can be attached to the surface of the needle bed through the magnetic acting force, the stability of the lower knitting needle in the back-and-forth movement process is improved, and the lower knitting needle can be stably located at an initial position when not driven by the machine head.

10. The flat knitting machine provided by the invention adopts the needle bed device recorded above, does not need to increase the number of needle beds, and is beneficial to reducing the assembly requirement of the needle bed device. The operation switching of the upper knitting needle and the lower knitting needle can be realized through the matching of the conversion stitch, the transition stitch and the push sheet, the needle bed device only needs to be provided with the needle selection stitch corresponding to the lower knitting needle, the needle selection stitch corresponding to the upper knitting needle does not need to be additionally arranged, the structure of the needle bed device and the machine head is favorably simplified, and the production cost is favorably reduced.

Drawings

FIG. 1 is a schematic view of a needle bed apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the needle slot in a needle bed apparatus according to an embodiment of the present invention;

FIG. 3 is an exploded view of a portion of the components of FIG. 2;

FIG. 4 is an exploded view of a partition, push plate and transition pins of a needle bed apparatus according to an embodiment of the present invention;

FIG. 5 is a partial view of an insert in a needle bed apparatus according to an embodiment of the present invention;

FIG. 6 is an exploded view of an upper needle and an upper lifter pin of a needle bed apparatus according to an embodiment of the present invention;

FIG. 7 is an exploded view of a lower needle, lower lifter pin and transfer pin of a needle bed apparatus according to an embodiment of the present invention;

FIG. 8 is an exploded view of a station stitch and selector stitch in a needle bed apparatus according to an embodiment of the present invention;

FIG. 9 is a schematic view of a part of the structure of a needle bed apparatus according to an embodiment of the present invention when the stitches of the work stations are at the B work station;

FIG. 10 is a schematic view of a part of the structure of a needle bed apparatus according to an embodiment of the present invention when the stitches of the work station are at the H work station;

FIG. 11 is a schematic view of a portion of a needle bed apparatus according to an embodiment of the present invention in which a transfer stitch is engaged with a lower needle;

FIG. 12 is a schematic view of a partial structure of a needle bed apparatus according to an embodiment of the present invention, when a transfer pin is pressed and tilted to match with a transition pin;

FIG. 13 is a schematic diagram of a portion of a needle bed apparatus according to an embodiment of the present invention, in which the lifter pins swing upward to a desired position;

fig. 14 is a schematic view of a flat knitting machine according to an embodiment of the present invention.

In the figure, 100-needle bed, 210-inserting sheet, 211-pressing groove, 212-clamping groove, 213-long groove, 220-clapboard, 221-limiting step, 222-avoiding groove, 231-limiting batten, 232-pressing plate, 233-clamping strip, 234-front pressing strip, 235-rear pressing strip, 241-steel wire I, 242-steel wire II, 243-limiting steel wire, 244-station steel wire, 245-steel wire III, 246-steel wire IV, 247-steel wire V, 310-lower knitting needle, 311-groove, 320-lower pressing stitch, 321-tilting groove, 322-first elastic arm, 323-lower pressing heel, 330-station stitch, 331-station butt, 332-station groove, 333-second elastic arm, 340-needle selection stitch, 341-third elastic arm, 342-needle selecting butt, 350-magnetic steel, 410-converting stitch, 411-converting protrusion, 412-converting stitch, 413-tilting protrusion, 420-transition stitch, 421-push surface, 422-transition protrusion, 423-limiting block, 430-push piece, 431-limiting protrusion, 510-upper knitting needle, 511-connecting groove, 512-open groove, 520-upper straight stitch, 521-upper straight butt, 522-connecting protrusion, 610-tooth piece, 620-sinker, 700-needle bed base, 810-needle selecting pressing plate, 820-pressing plate and 830-converting plate.

Detailed Description

The invention is further described with reference to the following figures and specific examples. 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 merely to indicate an orientation or positional relationship relative to one another as illustrated in the drawings, merely to facilitate describing and simplifying the invention, and are not intended to 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 are not to be considered limiting of the invention.

Example one

As shown in fig. 1 to 8, a needle bed device of a flat knitting machine according to a first embodiment of the present invention includes a needle bed 100 and a plurality of insert pieces 210 disposed on the needle bed 100, the insert pieces 210 are disposed in parallel and at intervals along a length direction of the needle bed 100, a needle groove is formed between adjacent insert pieces 210, and a lower knitting needle 310 and a lower needle jack 320 disposed in front and back are disposed in the needle groove. A conversion stitch 410 capable of tilting is arranged between the lower knitting needle 310 and the lower needle jack 320, a partition plate 220 positioned at the top of the lower knitting needle 310 is further arranged in the needle groove, an upper knitting needle 510 obliquely arranged relative to the lower knitting needle 310 is arranged at the top of the partition plate 220, an upper needle jack 520 capable of swinging up and down is connected to the rear end of the upper knitting needle 510, a push piece 430 capable of moving up and down is arranged at the bottom of the upper needle jack 520, a transition stitch 420 capable of moving back and forth is arranged at the bottom of the push piece 430, the front end of the conversion stitch 410 can be matched with the lower knitting needle 310 or the transition stitch 420, the lower needle jack 320 can drive the lower knitting needle 310 to move back and forth through the conversion stitch 410, and the lower needle jack 320 can also drive the upper needle jack 520 to swing up through.

The needle bed device is provided obliquely to a needle bed base 700 of the flat knitting machine, and the needle bed 100 is described as being horizontal in the needle bed device for the sake of convenience of description. In this embodiment, the needle bed 100 is rectangular plate-shaped, the surface of the needle bed 100 is provided with a plurality of slots spaced along the length direction of the needle bed 100, the slots extend along the width direction of the needle bed 100, and the bottom sides of the inserts 210 are fixedly inserted into the slots. The width direction of the needle bed 100 is defined as the front-rear direction, and the direction perpendicular to the surface of the needle bed 100 is defined as the up-down direction.

The needle bed device also comprises a plurality of fixing steel wires which simultaneously penetrate through the inserting pieces 210 and the partition boards 220, and the partition boards 220 are fixed in the needle grooves through the fixing steel wires, so that the stability of the partition boards 220 is improved. The partition 220 has a substantially triangular shape, and a groove for engaging with the lower knitting needle 310 is formed between the bottom surface of the partition 220 and the surface of the needle bed 100, and the lower knitting needle 310 is provided in the groove so as to be movable back and forth. The top surface of the partition plate 220 is obliquely arranged relative to the surface of the needle bed 100, the bottom surface of the upper knitting needle 510 is abutted against the top surface of the partition plate 220, the upper knitting needle 510 can move back and forth along the top surface of the partition plate 220, and the included angle between the upper knitting needle 510 and the lower knitting needle 310 is equal to the included angle between the top surface of the partition plate 220 and the surface of the needle bed 100. In this embodiment, the angle α between the top surface of the partition 220 and the surface of the needle bed 100 is preferably set to 30 °, i.e., the angle between the upper knitting needle 510 and the lower knitting needle 310 is also preferably set to 30 °.

With reference to fig. 5, in order to improve the stability of the upper knitting needle 510, the insert pieces 210 are provided with pressing grooves 211 located at the top of the upper knitting needle 510, the needle bed device further includes strip-shaped pressing plates 232, the pressing plates 232 are arranged to pass through the insert pieces 210 and located at the top of the upper knitting needle 510 by matching with the pressing grooves 211, the length direction of the pressing plates 232 is perpendicular to the plane direction of the insert pieces 210, and the pressing plates 232 are combined with the top surface of the partition 220 to limit the upper knitting needle 510, so as to improve the stability of the upper knitting needle 510. To avoid the pressure plate 232 from escaping the pressure groove 211, the pressure groove 211 is preferably provided as a dovetail groove.

The pushing sheet 430 is disposed at the rear of the partition board 220 and can move up and down, and in order to improve the stability of the raising pins 520 moving back and forth, the top surface of the pushing sheet 430 is inclined, and the top surface of the pushing sheet 430 is parallel to the top surface of the partition board 220. When the push plate 430 moves upward to a proper position, the top surface of the push plate 430 and the top surface of the partition plate 220 are located on the same plane, and the raising pins 520 can smoothly move back and forth on the track plane formed by the combination of the top surface of the push plate and the top surface of the partition plate. The top end of the front side of the push piece 430 is provided with a limit protrusion 431 protruding forwards, the top end of the rear side of the partition plate 220 is provided with a limit step 221 matched with the limit protrusion 431, and the stroke of the push piece 430 when moving downwards and resetting is limited by the matching of the limit protrusion 431 and the limit step 221.

With reference to fig. 5, in order to improve the stability of the push-out piece 430, the needle bed device further includes a limiting lath 231 passing through each insertion piece 210, the limiting lath 231 is disposed at the rear side of the push-out piece 430, so that the push-out piece 430 is limited in the front-rear direction, a plurality of grooves for the insertion pieces 210 to be inserted are disposed in the length direction of the limiting lath 231 at intervals, each insertion piece 210 is inserted into the groove of the limiting lath 231, the limiting lath 231 and the insertion pieces 210 are inserted into each other, and the improvement of the stability of the limiting lath 231 and the insertion pieces. The needle bed device further comprises a first steel wire 241 and a second steel wire 242 penetrating through each inserting piece 210 and located on the rear side of the pushing piece 430, the first steel wire 241 is located above the limiting lath 231 and abuts against the upper portion of the rear side wall of the pushing piece 430, the second steel wire 242 is located below the limiting lath 231 and abuts against the lower portion of the rear side wall of the pushing piece 430, the pushing piece 430 is limited through the limiting lath 231, the first steel wire 241 and the second steel wire 242, and stability of the pushing piece 430 is improved.

In order to realize the purpose that the transition pin 420 drives the pushing piece 430 to move up and down, a pushing surface 421 with a lower front part and a higher rear part is arranged at the top of the transition pin 420. When the transition pin 420 moves forward, the pushing plate 430 is driven to move upward by the interference of the pushing surface 421 and the bottom end of the pushing plate 430. When the transition pin 420 moves backward, the interference of the pushing surface 421 on the pushing piece 430 is eliminated, and the pushing piece 430 can move downward to reset. In this embodiment, the top surface of the transition pin 420 is configured to be lower at the front and higher at the back, the front end of the pushing surface 421 is connected to the lower plane at the front of the transition pin, and the back end of the pushing surface 421 is connected to the higher plane at the back of the transition pin. The push tab 430 moves upward until the bottom surface of the push tab is flush with the higher plane at the rear of the transition pin, and the push tab moves upward to a position.

Referring to fig. 6, the lift stitch 520 is provided with a lift butt 521 protruding upward, and the lift butt 521 is located on the rear side of the upper knitting needle 510. When the push plate 430 moves upwards, the upper lifter stitch 520 is driven to swing upwards, and the upper lifter heel 521 can extend out of the needle groove when the upper lifter stitch 520 swings upwards, i.e. the upper lifter heel 521 can protrude out of the insert 210, so that the upper lifter heel 521 can enter a driving track of the machine head when the machine head moves back and forth. After the transition stitch 420 moves backwards and resets to the initial position, the upper lifter stitch 520 swings downwards and resets to the initial position, so that the upper lifter butt 521 sinks back into the needle groove, and the upper lifter stitch can drive the push sheet 430 to move downwards and reset while resetting.

In order to realize the connection between the upper raising stitch 520 and the upper knitting needle 510, the rear part of the upper knitting needle 510 is provided with a connecting groove 511 and an open groove 512 positioned at the rear side of the connecting groove 511, the front end of the open groove 512 is communicated with the connecting groove 511, the rear end is opened, the front end of the upper raising stitch 520 is provided with a connecting bulge 522 matched with the connecting groove 511, the front part of the upper raising stitch 520 extends into the open groove 512, the connecting bulge 522 is inserted into the connecting groove 511, and the connecting bulge 522 and the connecting groove 511 adopt an arc-shaped matching structure. The upper jack pin 520 can swing up and down with the central point of the connecting protrusion 522 as a fulcrum, and the upper jack pin 520 can drive the upper knitting needle 510 to synchronously move back and forth through the matching of the connecting protrusion 522 and the connecting groove 511. In this embodiment, the opening groove 512 is V-shaped, and the lifter pin 520 swings to a position when swinging to contact with the inner wall of the opening groove 512, so that the amplitude of the lifter pin 520 during swinging up and down is limited by the opening groove 512, and the situation that the lifter pin swings excessively is avoided.

In order to improve the stability of the upper support stitch 520, the insert pieces 210 are provided with clamping grooves 212 located at the rear side of the upper support stitch 520, the needle bed device further comprises strip-shaped clamping strips 233, a plurality of tooth grooves matched with the insert pieces 210 are formed in the length direction of the clamping strips 233 at intervals, the clamping strips 233 penetrate through the insert pieces 210 through matching with the clamping grooves 212, and parts of the insert pieces 210 are embedded in the corresponding tooth grooves. The stroke of the upper supporting pin 520 in backward moving and resetting is limited by the clamping strip 233, and the clamping strip 233 and the inserting sheet 210 are mutually inserted and combined, so that the stability of the inserting sheet 210 is improved.

Referring to fig. 7, the converting stitch 410 can be connected to the lower needle jack 320 in a tilting manner, and a detachable series connection structure is provided between the front end of the converting stitch 410 and the lower knitting needle 310. In this embodiment, the front end of the converting stitch 410 is provided with a converting protrusion 411 protruding downward, and the rear end of the converting stitch 410 is provided with a converting butt 412 protruding upward. The top of the lower knitting needle 310 is provided with a groove 311 matched with the conversion protrusion 411, and the conversion protrusion and the groove form a serial structure, namely, the conversion stitch 410 and the lower knitting needle 310 are detachably connected through the matching of the conversion protrusion 411 and the groove 311. The front end of the transition pin 420 is provided with a transition protrusion 422 protruding downwards, and the transition protrusion 422 is located at the front side of the converting protrusion 411. In a normal state, the switching butt 412 is not stressed, the switching protrusion 411 is embedded in the groove 311, the switching stitch 410 is connected with the lower knitting needle 310 in series, and the lower needle jack 320 can drive the lower knitting needle 310 to synchronously move back and forth through the switching stitch 410. When the switching butt 412 is pressed, the front end of the switching stitch 410 tilts upward to make the switching protrusion 411 separate from the groove 311 and abut against the rear side of the transition protrusion 422, and when the lower jack stitch 320 drives the switching stitch 410 to move forward, the switching stitch 410 drives the transition stitch 420 to move forward through the interference between the switching protrusion 411 and the transition protrusion 422.

The transition pin 420 is arranged at the bottom side of the rear part of the partition board 220, in order to improve the stability of the transition pin 420 when moving forward and backward, the bottom side of the partition board 220 is provided with an avoidance groove 222 which is opened at the rear end and is used for avoiding the front end of the transition pin 420, the height of the avoidance groove 222 is slightly larger than that of the front end of the transition pin 420, the front end of the transition pin 420 is positioned in the avoidance groove 222, and the travel of the transition pin 420 when moving forward is limited by the avoidance groove 222. The part behind the transition stitch 420 is provided with a limiting block 423 protruding downwards, the needle bed device further comprises a limiting steel wire 243 penetrating through each insertion sheet 210, the limiting steel wire 243 is located at the rear side of the limiting block 423, the transition stitch 420 moves backwards until the limiting block 423 is close to the limiting steel wire 243 and does not move backwards any more, and the stroke of the transition stitch 420 in moving backwards is limited through the matching of the limiting block 423 and the limiting steel wire 243.

In order to realize the tilting connection between the conversion stitch 410 and the lower needle jack 320, a tilting protrusion 413 is arranged at the bottom of the substantially middle part of the conversion stitch 410, a tilting groove 321 matched with the tilting protrusion 413 is arranged at the front end of the lower needle jack 320, and the tilting protrusion 413 is arranged in the tilting groove 321. An arc-shaped matching structure is adopted between the tilting protrusion 413 and the tilting groove 321, and the conversion pin 410 can tilt with the central point of the tilting protrusion 413 as a fulcrum.

In order to timely drive the switching stitch 410 to tilt and reset when the switching butt 412 is not stressed, the front end of the lower lifter stitch 320 is provided with a first elastic arm 322 abutting against the bottom of the switching stitch 410, the front end of the first elastic arm 322 is fixedly arranged, and the rear end is suspended. When the switching butt 412 is pressed to turn the switching stitch 410, the first elastic arm 322 is deformed under force. When the switching butt 412 is released, the first elastic arm 322 recovers its shape and at the same time drives the switching stitch 410 to perform a reset tilting operation.

A needle bed 100 has a needle bed tip 610 fixed to the front side thereof, and a part of the needle bed tip 610 is located in the front end of the needle groove. The front end in needle groove is equipped with the spacer that is used for spacing tooth mouth piece 610, makes tooth mouth piece 610 receive spacingly through the spacer, improves its stability of locating the needle inslot. A sinker 620 positioned at the top of the upper knitting needle 510 is also arranged in the needle groove and used for pressing the loop, and the sinker 620 can move back and forth and can swing up and down.

In order to improve the stability of the lower knitting needle 310, the needle bed device further includes a magnetic steel 350, and the magnetic steel 350 is disposed on the needle bed 100 and located at the bottom of the lower knitting needle 310. In this embodiment, a groove located at the bottom of the lower knitting needle 310 is formed on the needle bed 100, a long groove 213 corresponding to the groove is formed on the insert 210, the magnetic steel 350 is in a strip shape, and the magnetic steel 350 is arranged to penetrate through the groove on the needle bed 100 and the long groove 213 on the insert 210. The magnetic steel 350 can make the lower knitting needle 310 receive the magnetic acting force, the magnetic acting force can make the bottom surface of the lower knitting needle 310 always attached to the surface of the needle bed 100, which is beneficial to improving the stability of the lower knitting needle 310 when moving back and forth, and ensuring that the lower knitting needle can be stably positioned at the initial position when not driven by the machine head.

The lower needle jack 320 is approximately arched as a whole, the front end and the rear end of the lower needle jack 320 are abutted against the surface of the needle bed 100, the approximately middle part of the lower needle jack 320 is provided with an upward convex lower jack butt 323, the needle bed device further comprises a steel wire three 245 which passes through each inserting sheet 210 and is positioned at the top of the lower jack butt 310, the steel wire three 245 is positioned at the rear side of the lower jack butt 323, and the steel wire three can limit the lower jack butt. A station stitch 330 and a selector stitch 340 are also arranged in the needle groove, the station stitch 330 is arranged at the rear side of the lower lifter stitch 320, and the selector stitch 340 is arranged at the rear side of the station stitch 330.

Referring to fig. 8, the front end of the station stitch 330 abuts against the top of the rear end of the lower lifter stitch 320, the front end of the station stitch 330 is provided with a station butt 331 protruding upward, and the station butt 331 is located behind the lower lifter butt 323. The bottom wall at the rear end of the station stitch 330 is provided with three station grooves 332 arranged at intervals front and back, and the needle bed device further comprises a station steel wire 244 which passes through each inserting sheet 210 and is matched with the station grooves 332. With different station slots 332 engaged with the station wire 244, the station stitch 330 is at a different station. The bottom of the station stitch 330 is provided with a second elastic arm 333 formed by extending backwards, the second elastic arm 333 is positioned at the bottom of the rear end of the station stitch 330, and the needle bed device also comprises a steel wire four 246 which is arranged by penetrating through each inserting sheet 210 and is positioned at the top of the second elastic arm 333.

The front part of the selector jack 340 is positioned above the station stitch 330 and at the rear side of the station butt 331, the bottom of the selector jack 340 is provided with a third elastic arm 341, and the rear end of the third elastic arm 341 is abutted against the station stitch 330. The needle bed device also comprises a steel wire five 247 which is arranged by penetrating each plug-in sheet 210 and is positioned at the top of the station stitch 330, the steel wire five 247 is positioned at the rear side of the station butt 331, and the front end of the needle selection stitch 340 is abutted against the steel wire five 247. The needle bed device also comprises a front pressing strip 234 and a rear pressing strip 235 which are arranged by penetrating through each inserting sheet 210 and used for limiting the needle selection stitch 340, wherein the front pressing strip 234 is positioned at the top of the front end of the needle selection stitch 340, and the rear pressing strip 235 is positioned at the top of the rear end of the needle selection stitch 340. The selector jacks 340 are provided with selector butts 342 projecting upward, and in the present embodiment, every eight selector jacks 340 constitute one selector unit in the longitudinal direction of the needle bed 100, and the eight selector butts 342 of the eight selector jacks 340 in the same selector unit are arranged at intervals from front to back and the heights of the selector butts increase from front to back in sequence.

With reference to fig. 9, the needle selecting butt 342 on the needle selector 340 can be pressed into the needle groove under the pressing action of the needle selecting pressing plate 810 on the needle selector, after the needle selecting butt 342 is pressed into the needle groove, the corresponding needle selector 340 cannot advance to push the station stitch 340 to run, the foremost station groove 332 is matched with the station steel wire 244, and the station stitch 330 is at the B station, that is, the station stitch is at the initial position. In the knitting area of the machine head, the station needle butt 331 on the station stitch 330 is pressed into the needle groove by the pressing sheet 820 on the machine head, correspondingly, the station stitch 330 applies force to the lower lifter stitch 320 to enable the lower lifter butt 323 to sink into the needle groove, and the knitting needle corresponding to the lower lifter stitch does not participate in knitting.

Referring to fig. 10, when the needle selecting pressing plate 810 of the unselected needle device of the needle selecting butt 342 on the needle selecting butt 340 is pressed into the needle groove, the needle selecting butt 342 on the needle selecting butt protrudes out of the insert sheet, the needle selecting butt 340 can move forward under the driving of the machine head, when the needle selecting butt 340 moves forward, the station groove 332 moving forward to the middle by matching with the station butt 331 is matched with the station steel wire 244, or the last station groove 332 is matched with the station steel wire 244. The station stitch is at station H when the intermediate station slot 332 engages the station wire 244. When the rearmost station slot 332 is engaged with the station wire 244, the station stitch 330 is at station a. When the station stitch is positioned at the H station or the A station, the knitting needle corresponding to the station stitch can complete actions such as knitting, tucking, transferring or connecting.

Referring to fig. 11, in a normal state, the switching plate 830 on the machine head does not press the switching butt 412 of the switching stitch 410, the switching protrusion 411 at the front end of the switching stitch 410 is located in the groove 311 on the lower knitting needle 310, and the lower needle jack 320, the switching stitch 410 and the lower knitting needle 310 are connected in series. When the machine head moves back and forth, the lower needle holding stitch 320 can be driven by the lower holding butt 323 to move back and forth, the lower needle holding stitch 320 drives the lower knitting needle 310 to synchronously move back and forth by the switching stitch 410, and the lower knitting needle 310 participates in knitting.

Referring to fig. 12, when knitting is required to be performed by the upper needle 510, the switching pressing plate 830 on the machine head presses the switching butt 412 of the switching stitch 410, the front end of the switching stitch 410 tilts upward to make the switching protrusion 411 disengage from the groove 311 of the lower needle 310 and locate at the rear side of the transition protrusion 422 on the transition stitch 420, the switching stitch 410 disengages from the lower needle 310, and the switching stitch 410 is matched with the transition stitch 420.

Referring to fig. 13, when the head drives the lower needle jack 320 to move forward through the lower butt 323, the lower needle jack 320 drives the transition stitch 420 to move forward through the switching stitch 410, when the transition stitch 420 moves forward, the push plate 430 is driven to move upward through the interference fit between the push surface 421 and the bottom end of the push plate 430, and when the push plate 430 moves upward, the upper butt 520 is driven to swing upward to make the upper butt 521 extend out of the needle groove. The machine head can drive the upper lifter stitch 520 to move back and forth through the upper lifter heel 521, and the upper knitting needle 510 is driven to synchronously move when the upper lifter stitch 520 moves back and forth, so that the upper knitting needle 510 can participate in knitting. The machine head drives the transition pin 420 to move backwards for resetting and drives the upper lifter pin 520 to swing downwards for resetting, so that the push sheet 430 can move downwards for resetting.

With reference to fig. 14, a first embodiment of the present invention further provides a flat knitting machine, including a needle bed base 700 and the needle bed devices described above, two base planes symmetrically arranged in a shape of a Chinese character 'ba' are disposed on the needle bed base 700, two needle bed devices are disposed on the two base planes, respectively, that is, the two needle bed devices are also symmetrically arranged in a shape of a Chinese character 'ba' on the needle bed base 700.

It is understood that the specific angle value of the included angle α between the top surface of the partition 220 and the surface of the needle bed 100 is not limited to 30 ° as described above, and may be set to other reasonable angle values such as 27 °, 29 °, 31 °, 33 °, 35 °, 37 °, 40 °, and the like.

It is understood that the positions of the conversion protrusion 411 and the recess 311 may be interchanged.

It is understood that the first resilient arm 322 may also be disposed at the bottom of the switch pin 410, and the rear end of the first resilient arm 322 abuts against the top of the lower lift pin 320.

It should be understood that the specific number of the selector jacks 340 in each selector unit is not limited to eight as described above and shown in the drawings, and may be one or two or three or four or five or six or seven or other reasonable numbers.

It is to be understood that the specific structure of the partition 220 is not limited to the above description and the drawings, and the provision of the avoiding groove 222 may be eliminated when the partition 220 is provided in another suitable structure.

It is understood that other members such as steel wires may be used instead of the pressure plate to limit the upper needle 510.

It is understood that other components such as steel wires may be used instead of the clamping strips to limit the raising pins 520.

It will be appreciated that flat knitting machines also include other components such as a head.

It is to be understood that in the flat knitting machine, the sinker 620 may be provided only on one of the needle bed devices.

Other embodiments of the present invention than the preferred embodiments described above, 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, should fall within the scope of the present invention defined in the claims.

Claims

1. A needle bed device of a flat knitting machine comprises a needle bed and inserts arranged on the needle bed, wherein a plurality of inserts are arranged in parallel and at intervals along the length direction of the needle bed, a needle groove is formed between every two adjacent inserts, a lower knitting needle and a lower needle raising foot which are arranged front and back are arranged in the needle groove, the flat knitting machine is characterized in that a conversion stitch capable of tilting is arranged between the lower knitting needle and the lower needle raising foot, a partition plate located at the top of the lower knitting needle is further arranged in the needle groove, an upper knitting needle which is obliquely arranged relative to the lower knitting needle is arranged at the top of the partition plate, an upper needle raising foot capable of swinging up and down is connected to the rear end of the upper knitting needle, a push sheet capable of moving up and down is arranged at the bottom of the upper needle raising foot, a transition stitch capable of moving back and forth is arranged at the bottom of the push sheet, the front end of the conversion stitch can be, The transition stitch and the push sheet drive the upper stile stitch to swing upwards.

2. A needle bed apparatus according to claim 1, wherein the top of the transition stitch is provided with a push surface which is obliquely arranged and is low in front and high in back, the upper lifter stitch is provided with an upward raised butt which is positioned at the back side of the upper knitting needle, when the transition stitch moves forward, the push plate is driven to move upward by the cooperation of the push surface and the bottom end of the push plate, and when the push plate moves upward, the upper lifter stitch is driven to swing upward to enable the upper lifter butt to extend out of the needle groove.

3. A needle bed apparatus according to claim 1, wherein the push piece is provided at a rear of the partition plate, a top surface of the push piece is provided in parallel with a top surface of the partition plate, and the top surface of the push piece and the top surface of the partition plate are located on the same plane when the push piece is moved up to a position.

4. The needle bed apparatus as claimed in claim 1, wherein the rear portion of the upper knitting needle is provided with a coupling groove and an open groove located at the rear side of the coupling groove, the front end of the open groove is communicated with the coupling groove, the rear end is open, the front end of the upper raising stitch is provided with a coupling protrusion engaged with the coupling groove, the front portion of the upper raising stitch extends into the open groove and the coupling protrusion is inserted into the coupling groove, and the coupling protrusion and the coupling groove are in an arc-shaped engagement structure.

5. A needle bed apparatus as claimed in claim 1, characterized in that the change-over stitch is connected with the lower needle bar stitch in a tilting manner, a tandem connection structure which is detachably fitted is provided between the front end of the change-over stitch and the lower knitting needle, the transition stitch is provided with a transition projection which is located on the front side of the lower needle bar stitch, the change-over stitch can drive the lower knitting needle to move synchronously through the tandem connection structure, and the change-over stitch can drive the transition stitch to move forwards through interference with the transition projection.

6. A needle bed device according to claim 5, characterized in that the transition stitch is arranged at the bottom side of the rear part of the partition board, and the bottom side of the partition board is provided with an avoiding groove for avoiding the front end of the transition stitch; and/or the transition stitch is provided with a limiting block protruding downwards, the needle bed device comprises a limiting steel wire penetrating through the insertion sheet, and the limiting steel wire is positioned behind the limiting block.

7. A needle bed device as claimed in claim 5, characterized in that the bottom of the conversion stitch is provided with a tilting projection, the front end of the lower needle bar stitch is provided with a tilting groove matched with the tilting projection, and the conversion stitch can be connected to the lower needle bar stitch in a tilting manner through the matching of the tilting projection and the tilting groove; and/or the rear end of the conversion stitch is provided with a conversion butt protruding upwards, the bottom of the conversion stitch or the top of the lower straight stitch is provided with an elastic arm, and the elastic arm is stressed and deformed when the conversion stitch tilts due to the compression of the conversion butt.

8. A needle bed apparatus according to claim 1, wherein the tuck-in tuck is provided with a hold-down groove at the top of the upper knitting needle, the needle bed apparatus further comprising an elongated hold-down plate provided by passing each tuck-in tuck in cooperation with the hold-down groove and located at the top of the upper knitting needle; and/or, the inserted sheet is equipped with the draw-in groove that is located stile stitch rear side, and the needle bed device still includes the card strip of rectangular shape, and the card strip is equipped with a plurality ofly along length direction interval setting and with inserted sheet complex tooth's socket, the card strip through with the draw-in groove cooperation wear through the inserted sheet setting and the part of inserted sheet inlay in the tooth's socket.

9. Needle bed apparatus according to any one of claims 1 to 8, wherein the needle bed apparatus further comprises magnetic steel, the magnetic steel being provided on the needle bed and located at the bottom of the lower knitting needle.

10. A flat knitting machine comprising a needle bed base, characterized by further comprising two needle bed devices of the flat knitting machine according to any one of claims 1 to 9, the needle bed devices being symmetrically distributed on the needle bed base.