CN110846803A - Thread plate bottom raising device of flat knitting machine - Google Patents

Abstract

The invention discloses a threading plate bottom lifting device of a flat knitting machine, which comprises a threading plate component, a steel wire and a steel wire conveying component, wherein the threading plate component is formed by fixedly clamping a threading plate and a thread leading plate; the steel wire conveying assembly comprises a wire feeding motor and a gear box, a wire feeding wheel and a wire pressing wheel which are matched with the wire feeding motor to move are arranged in the gear box, and sleeves for steel wires to pass through are arranged on two sides of the gear box; the device also comprises a steel wire pipe, and two ends of the steel wire pipe are provided with an inductor; the steel wire slides along the steel wire grooves of the steel wire pipe, the gear box and the lead plate, can slide outwards relative to the steel wire grooves and passes through the threading hole of the bottom raising needle. The invention has simple structure, can completely pull down the knitted piece under the state of no raised fabric and no raised tissue, achieves the purpose that any knitted piece has no waste yarn and is directly raised, and greatly reduces the knitting cost and the labor cost.

Description

Thread plate bottom raising device of flat knitting machine

Technical Field

The invention belongs to the technical field of knitting machinery, and particularly relates to a threading plate bottom lifting device of a flat knitting machine.

Background

Because a certain distance exists between the needle bed opening and the traction device in the flat knitting machine, namely, a piece of fabric cannot be clamped by the traction device immediately when being knitted, if the piece of fabric is directly and normally knitted, the piece of fabric which is just knitted (namely, the piece of fabric which is not clamped by the high-position roller) is not flat due to lack of uniform traction force, so that the whole piece knitting effect of the piece of fabric is influenced, namely, the piece of fabric can be smoothly knitted only in a traction state. Therefore, before entering the formal weaving piece, the weaving piece needs to be woven with the starting fabric with the length of about 25-35mm, after the starting fabric is clamped by a high-position roller below the needle bed opening, the weaving piece can obtain certain traction force to enter the formal weaving, then the 25-35mm starting fabric needs to be woven for transition when each weaving piece is woven, and after the weaving piece is finished, a worker needs to detach the starting fabric (waste yarn) on the weaving piece.

Because some flat knitting machines can be equipped with automatic starting devices, starting rubber-band yarns are needed to be used as starting fabrics, waste yarns are generated, and the starting devices are complex in structure, high in failure rate and relatively high in use cost. Therefore, the conventional flat knitting machine needs to realize the integral knitting of the knitted fabric piece by using the waste yarn before starting the knitting, so that the integral working efficiency is reduced, and the yarn is wasted.

Patent 201820229165. X discloses a play end device, including play end comb, blockade silk, elevating system and thread feeding mechanism, play end comb is provided with many and follows the play end needles of same straight line interval arrangement, the blockade silk cooperates with the cross-under of play end needle, elevating system and play end comb hookup, are used for the drive play end comb makes elevating movement, thread feeding mechanism and blockade silk hookup are used for the drive blockade silk penetrates and takes out the play end needle. This patent is blocked through the mode of the lock silk of piecing together of the back stitch that seals with the loop that the flat knitting machine of computer weaves, blocks the silk and passes the back stitch easily and take out the back stitch, and then makes first line coil can be blocked by the lock silk betterly, makes the tractive force that the piece received more balanced, can reduce to weave the fabric of starting a mouthful, can accomplish the work of tractive fabric again.

In the device, the bottom lifting comb is also provided with a bottom lifting plate, the lower ends of the bottom lifting needles are fixedly connected with the bottom lifting plate, the bottom lifting plate is provided with guide holes, and the locking wires penetrate into needle holes of the bottom lifting needles along the guide holes. This both need set up multirow needle groove on making up the bottom plate, need set up crooked guiding hole in the side again, and the processing degree of difficulty is big, influences the machining precision easily for the guiding hole can't be in same water flat line with the pinhole of rising the end needle, causes the wastrel, resource-wasting, increases manufacturing cost.

Meanwhile, the device cannot calculate the conveying length of the sealing wire, cannot accurately judge whether the sealing wire penetrates through all the bottom lifting needles, and is easy to cause that the sealing wire does not completely penetrate through all the bottom lifting needles, so that a coil on the bottom lifting needle falls off, or the sealing wire is excessively conveyed so as to be separated from a wire feeding mechanism, and a fault occurs.

Disclosure of Invention

The invention aims to solve the problems and provides the threading plate bottom lifting device of the flat knitting machine, which has a simple structure and is convenient to mount, and can effectively achieve the purpose that any knitted piece has no waste yarn and is directly lifted.

Therefore, the technical scheme of the invention is as follows: a threading plate bottom lifting device of a flat knitting machine comprises a threading plate component, a steel wire and a steel wire conveying component, wherein the threading plate component is formed by fixedly clamping a threading plate and the threading plate; the edge of the lead plate is provided with a steel wire groove, and the upper notch of the steel wire groove and the threading hole at the head part of the starting needle are positioned at the same horizontal position;

the method is characterized in that: the steel wire conveying assembly is arranged at the lower notch of the steel wire groove and comprises a wire feeding motor and a gear box, and a wire feeding wheel and a wire pressing wheel which are matched with the wire feeding motor to move are arranged in the gear box; two sides of the gear box are provided with sleeves for steel wires to pass through, and the right sleeve is opposite to the lower notch of the steel wire groove; the gear box is characterized by further comprising a steel wire limiting assembly, wherein the steel wire limiting assembly comprises a steel wire pipe, two ends of the steel wire pipe are respectively provided with an inductor, and the head of the steel wire pipe is opposite to the left sleeve of the gear box; the steel wire slides along the steel wire grooves of the steel wire pipe, the gear box and the lead plate, can slide outwards relative to the steel wire grooves and passes through the threading hole of the bottom raising needle.

Furthermore, the steel wire limiting assembly also comprises a connecting rod, the steel wire pipe is fixed on the connecting rod, the head part of the steel wire pipe is provided with a first inductor, and the tail part of the steel wire pipe is provided with a second inductor; when the second sensor senses the tail end of the steel wire, the top end of the steel wire is positioned in the steel wire groove and is in a non-working state, and when the tail end of the steel wire leaves the second sensor, the steel wire is in a working state; when the first sensor senses the tail end of the steel wire, the steel wire penetrates through the threading holes of all the bottom lifting needles.

Furthermore, at least one group of wire feeding wheel and wire pressing wheel are arranged in the gear box, and the wire pressing wheel and the wire feeding wheel are matched with each other; a counting induction disc is fixed on a shaft of one of the wire feeding wheels, a plurality of first magnetic steels are uniformly arranged on the counting induction disc, and a third inductor matched with the first magnetic steels is arranged in the gear box.

Furthermore, the wire pressing wheel and the wire pressing gear are coaxially arranged, the wire feeding wheel and the wire feeding gear are coaxially arranged, the wire feeding gear is meshed with a gear on the wire feeding motor, and the wire pressing gear is meshed with the wire feeding gear; and a circle of wire feeding grooves are formed in the wire feeding wheel.

Furthermore, a rotating shaft of the wire pressing wheel is arranged on a gear sliding block, and the gear sliding block is arranged in the gear box through a guide frame and can slide along the guide frame; the gear sliding block is provided with a long hole, the top of the gear box is provided with an opening, the opening is opposite to the long hole of the gear sliding block, a pressure spring is arranged in the long hole, and an adjusting screw penetrates through the opening and abuts against the pressure spring.

Furthermore, rotating shafts are arranged on two sides of the gear box, the sleeve is located inside the rotating shafts, a bypassing gear is fixed on the rotating shaft on one side, the bypassing gear is meshed with a driving gear on the bottom lifting motor, and the bottom lifting motor drives the gear box to turn around the rotating shafts.

Furthermore, a rotating shaft on the gear box is movably arranged on a bearing, the bearing is arranged on a fixing plate through a bearing seat, and the gear box is arranged in a square groove of the fixing plate and overturned in the square groove; a second magnetic steel is arranged above the left side of the gear box, the upper end and the lower end of the fixed plate on the left side are respectively provided with a proximity switch, and the proximity switches and the second magnetic steel work in a matched mode; the right side of the gear box is provided with a limit screw, the upper end and the lower end of the fixing plate on the right side are respectively provided with a limit stop, and the limit stops and the limit screw work in a matched mode.

Furthermore, the threading plate and the lead plate are fixed on the groove needle plate connecting rod, a first groove and a second groove are respectively arranged above the opposite side edges of the threading plate and the lead plate, and two sides of the clamping block are respectively clamped into the first groove and the second groove; the threading plate is further provided with a boss, the lead plate is further provided with a third groove, and the boss is clamped into the third groove.

Furthermore, the threading plate and the lead plate are fixed on the groove needle plate connecting rod after being clamped with each other, and a step surface is arranged on the lower edge of the groove needle plate connecting rod; the threading board is formed by a plurality of threading branch boards in a combined mode, the threading branch boards are arranged on the step surface of the groove needle board connecting rod, and adjacent threading branch boards are clamped and fixed into a whole.

Furthermore, the wire drawing plate assembly further comprises a lifting assembly which drives the wire drawing plate assembly to move up and down, the wire drawing plate assembly is fixed on a linear bearing seat, and the linear bearing seat moves up and down along the sliding rod.

After a piece is knitted in a first row, the high-position roller is in an open state at the moment, the whole device rises under the drive of the lifting mechanism until the head of the bottom-lifting needle on the threading plate is inserted into all coils in the first row of the piece, after the rising is stopped, the wire feeding wheel and the wire pressing wheel in the steel wire conveying assembly start to work and rotate towards the lower notch of the steel wire groove, a steel wire is pushed and comes out of the upper notch of the steel wire groove of the threading plate and penetrates through the threading hole of the bottom-lifting needle until the steel wire penetrates into the last bottom-lifting needle, the threading action is finished, the steel wire conveying assembly stops working, the coils in the bottom-lifting needles are all sealed by the steel wire, then the whole device starts to descend, the threading plate draws the piece according to the drawing speed set by knitting, and the work of directly lifting the waste-free yarn.

When the wire feeding wheel pushes a steel wire, the counting induction disc and the wire feeding wheel synchronously rotate, first magnetic steel arranged on the counting induction disc cooperates with a third inductor in the gear box, the third inductor induces the number of times that the first magnetic steel passes through and the length of the steel wire pushed in unit times, and therefore the length of the steel wire pushed forwards by the wire feeding wheel is calculated. The wire pressing wheel is installed on the gear sliding block, the gear sliding block is fixed in the gear box through the guide frame, the long hole above the gear sliding block is opposite to the opening above the gear box and used for installing the pressure spring, and the elasticity of the pressure spring is adjusted through the adjusting screw and used for adjusting the force of the wire pressing wheel on the steel wire.

The steel wire limiting assembly limits the movement of the steel wire through two inductors arranged at the head and the tail of the steel wire pipe. When the steel wire breaks away from the second inductor that sets up at steel wire tube tail end, the second inductor can not respond to the steel wire promptly, then explains that the steel wire is in the operating condition who threads, resets as the steel wire, sets up when the second inductor of steel wire tube tail end senses the steel wire, explains that the steel wire is in the non-operating condition who withdraws from the threading board. When the first sensor at the head of the steel wire pipe senses the tail end of the steel wire, the steel wire finishes the wire penetrating action, and the steel wire conveying assembly stops working. The first inductor of steel wire tube head portion can also detect the unexpected state of steel wire threading, prevents that the steel wire from accomplishing still forward slip after the threading work, leads to the steel wire to break away from the pressure silk wheelset.

The steel wire enters the wire feeding groove of the wire feeding wheel through the sleeve on the left side of the gear box, is pressed by the wire pressing wheel to prevent slipping, then passes through the sleeve on the right side, and is conveyed through the rotation of the wire feeding wheel and the wire pressing wheel. When the steel wire is carried, the gear that detours meshes with the driving gear for the gear box can use the pivot to overturn as the center, makes the steel wire can also make a round trip to rotate when carrying, can let the steel wire atress even when pulling down the fabric, and extension steel wire life-span can assist the steel wire to pass the through wires hole on the threading board smoothly again.

Meanwhile, second magnetic steels are arranged in front of and behind the upper left side of the gear box, proximity switches are arranged above and below the left side of the square groove of the fixing plate, screws are arranged at the upper right end of the gear box, a limiting gear is arranged on the right side of the square groove of the fixing plate, when the gear box rotates by taking the rotating shaft as a center, the upper proximity switch senses the front magnetic steels, the lower proximity switch senses the rear magnetic steels, the screws at the upper right end of the gear box are mechanically limited through limiting stops, and the mechanical limitation is to prevent the inductor from malfunctioning and realize the double-insurance control. The steel wire conveying assembly is arranged on one side of the lead plate (namely the right side of the flat knitting machine), when a first row of a knitted sheet is not knitted by full needles, if no coil is arranged on a right-side knitting needle, the steel wire can slide in advance in the ascending process and passes through a part of threading holes of bottom needles, so that the time is saved, and the production efficiency is improved.

The threading board and the lead plate upper end are connected through the fixture block of coming into in the recess, play limiting displacement in the fore-and-aft direction between them, and the lower extreme passes through the joint mode of boss and recess, plays limiting displacement in the upper and lower direction between them, has guaranteed that the height of playing the end needle through wires hole is unanimous on the horizontal direction with the height of notch on the steel wire groove on the lead plate, guarantees that the steel wire can penetrate the through wires hole smoothly. The lead plate and the threading plate are mutually independent, so that later maintenance and replacement are facilitated, and the use cost of a user is reduced. Meanwhile, the threading plates can be of a one-piece structure and can also adopt a split structure and are formed by combining a plurality of threading sub-plates, the adjacent threading sub-plates are connected and fixed through clamping blocks, grooves and the like, the limiting effect is achieved in the front and rear directions, and all the threading sub-plates are supported on the step surfaces of the groove needle plate connecting rods, so that all the threading sub-plates are in the same horizontal position. The threading board of split type structure makes things convenient for the part in later stage to maintain and change.

The invention has simple structure, the bottom lifting needle can be inserted into a weaving piece of any tissue, the whole of a lifting coil needle of the weaving piece is pulled without leakage by matching with a steel wire, the weaving piece is completely pulled under the state without bottom lifting fabric and bottom lifting tissue, and the purpose that any weaving piece has no waste yarn to be directly lifted is achieved, thereby greatly reducing the weaving cost and the labor cost and being suitable for popularization in related fields.

Drawings

The following detailed description is made with reference to the accompanying drawings and embodiments of the present invention

FIG. 1 is a schematic structural diagram of a bottoming device;

FIG. 2 is a schematic structural view of the bottom lifting device (omitting the lifting mechanism);

FIG. 3 is an enlarged view of a portion of FIG. 2 at point L;

FIG. 4 is an enlarged view of a portion of FIG. 2 at point M;

FIG. 5 is an exploded view of the components of the bottoming device;

FIG. 6 is a partial enlarged view of point N of FIG. 5;

FIG. 7 is a schematic view of the construction of the wire transfer assembly;

FIG. 8 is an exploded view of a part of the wire transfer assembly;

FIG. 9 is an exploded view of the wire feed wheel assembly and the counter plate;

FIG. 10 is an exploded view of a component of the wire wheel assembly;

fig. 11 is a schematic structural view of an integral stringing board assembly;

FIG. 12 is an enlarged view of a portion of FIG. 11 at point H;

fig. 13 is an exploded view of a part of the integrated stringing board assembly;

fig. 14 is a schematic structural view of a split stringing board assembly (configuration one);

fig. 15 is an exploded view of a part of the split stringing board assembly (configuration one);

fig. 16 is an exploded view of a part of the split stringing board assembly (configuration two);

fig. 17 is an assembly schematic diagram of a split type threading plate assembly (structure two).

Labeled as:

the threading plate 1, the groove needle plate 11, the bottom lifting needle 12, the first groove 13, the boss 14, the first threading branch plate 15, the concave part 16, the fourth groove 17, the fifth groove 18, the second threading branch plate 19, the lug 110 and the sixth groove 111;

the lead plate 2, the steel wire groove 21, the second groove 22, and the third groove 23;

the needle bar connecting rod 3, the step surface 31, the first fixture block 41, the second fixture block 42 and the limiting block 43;

the wire feeding device comprises a steel wire conveying assembly 5, a wire feeding motor 51, a gear box 52, a wire feeding motor gear 53, a gear box cover plate 54, a third sensor 55, a sensor seat 56, a rotating shaft 57, a steel wire short pipe 58, a bypassing gear 59, a bottom lifting motor 510, a driving gear 511, front magnetic steel 512, rear magnetic steel 513, an upper proximity switch 514, a lower proximity switch 515, a limit screw 516 and a limit stop 517;

the wire pressing wheel assembly 6, the wire pressing wheel 61, the wire pressing bearing 62, the wire pressing gear 63, the gear sliding block 64, the guide frame 65, the pressure spring 66 and the adjusting screw 67;

the wire feeding wheel assembly 7, the wire feeding wheel 71, the wire feeding bearing 72, the wire feeding gear 73, the counting induction disc 74, the first magnetic steel 75 and the yarn feeding groove 76;

the device comprises a steel wire 8, a fixing plate 81, a linear bearing sleeve 82, a sliding rod 83, a steel wire pipe 84, a connecting rod 85, a first inductor 86, a second inductor 87, a U-shaped tail part 88, a left fixing plate 89, an adjusting plate 810, an adjusting bolt 811, a short rod 812, a bearing seat 813 and a connecting plate 814.

Detailed Description

See the drawings. The play end device described in this embodiment includes threading board subassembly, steel wire transfer module and the spacing subassembly of steel wire. The transfer and rotation of the wire is accomplished by a wire transfer assembly.

The threading board subassembly includes threading board 1, threading board 2 and groove needle board connecting rod 3, the threading board subassembly both ends are installed respectively on left side fixed plate 89 and right side fixed plate 81, elevating system includes linear bearing housing 82, slide bar 83 and elevator motor, linear bearing housing 82 is installed on slide bar 83, elevator motor drive linear bearing housing 82 slides from top to bottom along slide bar 83, left side fixed plate 89 and right side fixed plate 81 respectively install on the linear bearing housing 82 of both sides through a connecting plate 814, realize the lift of threading board end-lifting device. Be fixed with regulating plate 810 on the left side fixed plate 89, install adjusting bolt 811 on the regulating plate 810, during the assembly, adjusting bolt 811 supports in groove faller connecting rod 3 below, and adjusting bolt 811 makes the left and right sides level of groove faller connecting rod 3, then fixes groove faller connecting rod 3 on left side fixed plate 89, and the threading board is controlled highly to keep unanimous.

The threading plate 1 consists of a grooved needle plate 11 and a bottom lifting needle 12, a row of uniformly distributed needle grooves are formed in the grooved needle plate, the lower ends of the bottom lifting needles 12 are fixed on the needle grooves, threading holes for threading steel wires are formed above the bottom lifting needles 12 and are arranged along the same straight line, and the threading holes keep the same height; the bottom lifting needle 12 is exposed out of the groove needle plate 11 part and is used for inserting the opening yarn of the fabric, the head part of the bottom lifting needle is provided with a four-side chamfer, and when the bottom lifting needle penetrates through the opening yarn of the fabric, the contact area of the bottom lifting needle and the opening yarn can be reduced, and the damage to the fabric is reduced. The edge of the side edge of the lead plate 2 is provided with a steel wire groove 21 which is used for storing steel wires, and the upper notch of the steel wire groove is aligned with the threading hole of the base needle, so that the steel wires can pass through the threading hole smoothly.

The threading plate 1 and the lead plate 2 are both fixed on the groove needle plate connecting rod 3, a first groove 13 is arranged above the side edge of the threading plate 1, a boss 14 is arranged below the threading plate 1, a second groove 22 is arranged above the side edge of the lead plate 2, a third groove 23 is arranged below the lead plate 2, two sides of a first clamping block 41 are respectively clamped into the first groove 13 and the second groove 22, the threading plate 1 and the lead plate 2 are fixed above the threading plate, and meanwhile, the front and back directions are limited, so that the threading plate and the lead plate are prevented from being staggered front and back; the boss 14 of the threading plate is clamped into the third groove 23 of the threading plate, the threading plate and the lower part of the threading plate are fixed, and meanwhile, the threading plate and the threading plate are limited in the up-down direction, so that the threading plate and the threading plate are prevented from being staggered up and down.

The threading board of this embodiment can formula structure as an organic whole, and whole board integrated into one piece processing forms, also can be split type structure, divides the board combination to form by a plurality of solitary threading. The combination of threading minute board can have 2 forms:

as shown in fig. 14 and 15, the first structure: the split type threading plate assembly comprises a threading plate 1 and a threading plate 2 which are both fixed on a groove needle plate connecting rod 3, and the lower edge of the groove needle plate connecting rod 3 is provided with a step surface 31; the threading board 1 is formed by combining a plurality of first threading branch boards 15, the first threading branch boards 15 are arranged on the step surface 31 of the groove needle board connecting rod, and the lower bottom surface of each first threading branch board is provided with a concave part 16, so that the contact with the step surface on the lower side of the groove needle board connecting rod is reduced, and the positioning is facilitated. A fourth groove 17 is formed in the right side of the upper part of the first threading branch plate 15, fifth grooves 18 are formed in the two sides of the lower part of the first threading branch plate, the upper parts of the adjacent first threading branch plates are clamped through second clamping blocks 42, the side edges of the second clamping blocks 42 are slightly sunken and clamped into the fourth groove 17 and the side edge of the other first threading branch plate; a limiting block 43 is clamped in a fifth groove below the adjacent first threading branch plate, and the limiting block is fixed on the groove needle plate connecting rod. The lead plate 2 is also fixed to the adjacent first threading sub plate 15 by the second latch 42 and the stopper 43.

As shown in fig. 16 and 17, the second structure: the split type threading plate assembly comprises a threading plate 1 and a threading plate 2 which are both fixed on a groove needle plate connecting rod 3, and the lower edge of the groove needle plate connecting rod is provided with a step surface 31; the threading plate is formed by combining a plurality of second threading branch plates 19, the second threading branch plates are arranged on the step surfaces of the groove needle plate connecting rods, and the lower bottom surfaces of the second threading branch plates are provided with concave parts, so that the contact surface with the steps on the lower side of the groove needle plate connecting rods is reduced, and the positioning is convenient; the left side of the second threading branch plate is provided with a convex block 110, the right side of the second threading branch plate is provided with a sixth groove 111, and the adjacent second threading branch plates are fixed together through the matching of the convex block 110 and the sixth groove 111, so that the front position and the rear position are limited. The left side of the lead plate 2 is also provided with a convex block which is matched and fixed with the sixth groove on the second threading branch plate.

The steel wire conveying assembly 5 is arranged at the lower notch of the steel wire groove and comprises a wire feeding motor 51 and a gear box 52, the wire feeding motor is arranged on the back of the gear box, and a wire feeding motor gear 53 is arranged on a motor shaft; a gear box cover plate 54 is arranged in front of the gear box, 2 groups of wire pressing wheel assemblies 6 and 2 groups of wire feeding wheel assemblies 7 are arranged in the gear box, the wire pressing wheel assemblies are positioned above the wire feeding wheel assemblies, the upper 2 groups of wire pressing wheel assemblies 6 are arranged on a gear sliding block 64 through bearing pins and gaskets, and the gear sliding block 64 is arranged in the gear box 52 through a guide frame 65 and can slide along the guide frame 65; the gear sliding block 64 is provided with a long hole, the top of the gear box 52 is provided with an opening, the opening is opposite to the long hole of the gear sliding block, a pressure spring 66 is arranged in the long hole, an adjusting screw 67 penetrates through the opening and abuts against the pressure spring, and the wire pressing wheel assembly 6 is composed of a wire pressing wheel 61, a wire pressing bearing 62 and a wire pressing gear 63. The lower 2 groups of wire feeding wheel assemblies 7 are directly arranged in the gear box through bearing pins and gaskets; the wire feeding wheel assembly 7 consists of a wire feeding wheel 71, a wire feeding bearing 72 and a wire feeding gear 73; the circumferential surface of the wire feeding wheel 71 is provided with a wire feeding groove 76 with the depth smaller than the diameter of the steel wire, the steel wire 8 is embedded in the wire feeding groove, and the wire pressing wheel 61 presses the steel wire 8 to prevent the steel wire from slipping. The wire feeding motor gear 53 on the wire feeding motor 51 is engaged with the wire feeding gear 73 to drive the wire feeding gear to rotate, and the wire feeding gear 73 is engaged with the wire pressing gear 63 to rotate the wire feeding wheel 71 and the wire pressing wheel 61 to convey the steel wire 8.

A counting induction disc 74 is arranged on a group of wire feeding wheel assemblies at the lower left, a plurality of first magnetic steels 75 are uniformly distributed on the circumference of the counting induction disc, a third inductor 55 matched with the first magnetic steels 75 is arranged in the gear box 52, the third inductor 55 is positioned below the counting induction disc 74, the third inductor 55 is arranged in the gear box 52 through an inductor seat 56, counting is carried out through induction of the first magnetic steels 75, and the conveying length and the conveying direction of the steel wire 8 are controlled.

The left side and the right side of the gear box 52 are respectively provided with a rotating shaft 57, the center of the rotating shaft is provided with a sleeve, a steel wire short pipe 58 is arranged in the sleeve, and the steel wire short pipe in the sleeve at the right side is aligned with the lower notch position of the steel wire groove 21, so that a steel wire 8 can conveniently pass through the sleeve; a bypassing gear 59 is fixed on the left rotating shaft, a bottom lifting motor 510 is arranged on the left side of the gear box 52, the bypassing gear 59 is meshed with a driving gear 511 on the bottom lifting motor, and the bottom lifting motor 510 drives the gear box 52 to turn around the rotating shaft 57. The rotating shafts 57 on the two sides of the gear box are movably arranged on bearings, the bearings are arranged on the fixing plate 81 on the right side through a bearing seat 813, a square groove is formed in the middle of the fixing plate, and the gear box 52 is arranged in the square groove of the fixing plate 81 and overturned in the square groove; the upper part of the left side of the gear box is provided with front magnetic steel 512 and rear magnetic steel 513 which are distributed in the front-rear direction, the upper end and the lower end of a fixing plate on the left side are respectively provided with an upper proximity switch 514 and a lower proximity switch 515, when the gear box 52 rotates by taking the rotating shaft 57 as a center, the upper proximity switch 514 induces the front magnetic steel 512, and the lower proximity switch 515 induces the rear magnetic steel 513; the right side of the gear box 52 is provided with a limit screw 516, the upper end and the lower end of the fixing plate on the right side are respectively provided with a limit stop 517, the limit screw 516 is mechanically limited through the limit stop 517, and the mechanical limitation is to prevent the sensor from malfunctioning, so that the rotary stroke of the gear box is controlled by double insurance.

The steel wire limiting assembly comprises a steel wire pipe 84 and a connecting rod 85, the steel wire pipe 84 is fixed on the connecting rod 85, steel wire short pipes in a sleeve on the left side of the gear box at the head of the steel wire pipe are opposite in position and are positioned at the same horizontal position, and a first sensor 86 is arranged at the head of the steel wire pipe 84; the tail end of the steel wire pipe is bent inwards to form a U-shaped tail part 88 which is fixed on a short rod 812 and used for storing steel wires, and the tail part is also provided with a second sensor 87, and the second sensor 87 is fixed on the short rod 812; when the second sensor 87 senses the tail end of the steel wire 8, the top end of the steel wire 8 is positioned in the steel wire groove, the steel wire is in a non-working position, and when the tail end of the steel wire leaves the second sensor 87, the steel wire is in a wire threading working state; when the first sensor 86 senses the tail end of the steel wire, the steel wire 8 finishes threading and passes through all the threading holes of the bottom lifting needles.

After the first row of the knitted piece is knitted, the threading plate assembly starts to move upwards under the driving of the lifting mechanism, at the moment, the high-position roller is in an open state, the threading plate assembly continues to ascend until the bottom raising needles 12 at the top of the threading plate are inserted into all the coils in the first row of the knitted piece, and the ascending is stopped; at this time, the steel wire conveying assembly starts to work, the wire feeding motor 51 drives the wire feeding gear 73 to rotate, the wire feeding wheel 71 rotates forwards, the wire feeding gear 73 drives the wire pressing gear 63, and therefore the wire pressing wheel 61 is driven, and the wire feeding wheel 71 and the wire pressing wheel 61 are matched with the steel wire 8 to be pushed; and a counting induction disc 74 arranged on the wire feeding wheel assembly calculates the length of the steel wire pushed forwards. Under the normal condition, the steel wire comes out from the steel wire inslot of lead plate side, penetrates the through wires hole of end needle, penetrates the through wires hole of last end needle until the steel wire, finishes the action of threading, and copper wire conveying component stop work, and the coil in the end needle all is sealed by the steel wire simultaneously, then the threading board subassembly begins to descend, and the threading board subassembly is according to weaving the pulling speed that sets up and tractive weaving the piece uniformly.

When the steel wire is separated from the second sensor 87 arranged at the tail end of the steel wire pipe 84, the steel wire 8 is in a threading working state, when the second sensor 87 at the tail end of the steel wire pipe detects the steel wire, the steel wire exits from the threading plate and is in a non-working state, and when the first sensor 86 at the head of the steel wire pipe detects the tail end of the steel wire, the steel wire finishes threading work, and the steel wire conveying assembly stops working. The first sensor 86 at the head of the steel wire pipe can also detect the accidental state of the steel wire threading, and the steel wire is prevented from being threaded forwards after the threading is finished, so that the steel wire is separated from the wire feeding gear assembly.

Claims (10)

1. A threading plate bottom lifting device of a flat knitting machine comprises a threading plate component, a steel wire and a steel wire conveying component, wherein the threading plate component is formed by fixedly clamping a threading plate and the threading plate; the edge of the lead plate is provided with a steel wire groove, and the upper notch of the steel wire groove and the threading hole at the head part of the starting needle are positioned at the same horizontal position;

the method is characterized in that: the steel wire conveying assembly is arranged at the lower notch of the steel wire groove and comprises a wire feeding motor and a gear box, and a wire feeding wheel and a wire pressing wheel which are matched with the wire feeding motor to move are arranged in the gear box; two sides of the gear box are provided with sleeves for steel wires to pass through, and the right sleeve is opposite to the lower notch of the steel wire groove; the gear box is characterized by further comprising a steel wire limiting assembly, wherein the steel wire limiting assembly comprises a steel wire pipe, two ends of the steel wire pipe are respectively provided with an inductor, and the head of the steel wire pipe is opposite to the left sleeve of the gear box; the steel wire slides along the steel wire grooves of the steel wire pipe, the gear box and the lead plate, can slide outwards relative to the steel wire grooves and passes through the threading hole of the bottom raising needle.

2. The thread passing plate bottom raising device of a weft knitting machine according to claim 1, wherein: the steel wire limiting assembly further comprises a connecting rod, the steel wire pipe is fixed on the connecting rod, the head of the steel wire pipe is provided with a first inductor, and the tail of the steel wire pipe is provided with a second inductor; when the second sensor senses the tail end of the steel wire, the top end of the steel wire is positioned in the steel wire groove and is in a non-working state, and when the tail end of the steel wire leaves the second sensor, the steel wire is in a working state; when the first sensor senses the tail end of the steel wire, the steel wire penetrates through the threading holes of all the bottom lifting needles.

3. The thread passing plate bottom raising device of a weft knitting machine according to claim 1, wherein: at least one group of wire feeding wheels and wire pressing wheels are arranged in the gear box, and the wire pressing wheels and the wire feeding wheels are matched with each other; a counting induction disc is fixed on a shaft of one of the wire feeding wheels, a plurality of first magnetic steels are uniformly arranged on the counting induction disc, and a third inductor matched with the first magnetic steels is arranged in the gear box.

4. The thread passing plate bottom raising device of a weft knitting machine according to claim 3, wherein: the wire pressing wheel and the wire pressing gear are coaxially arranged, the wire feeding wheel and the wire feeding gear are coaxially arranged, the wire feeding gear is meshed with a gear on the wire feeding motor, and the wire pressing gear is meshed with the wire feeding gear; and a circle of wire feeding grooves are formed in the wire feeding wheel.

5. The thread passing plate bottom raising device of a weft knitting machine according to claim 3, wherein: the rotating shaft of the wire pressing wheel is arranged on a gear sliding block, and the gear sliding block is arranged in the gear box through a guide frame and can slide along the guide frame; the gear sliding block is provided with a long hole, the top of the gear box is provided with an opening, the opening is opposite to the long hole of the gear sliding block, a pressure spring is arranged in the long hole, and an adjusting screw penetrates through the opening and abuts against the pressure spring.

6. The thread passing plate bottom raising device of a weft knitting machine according to claim 1, wherein: the two sides of the gear box are provided with rotating shafts, the sleeve is positioned inside the rotating shafts, a bypassing gear is fixed on the rotating shaft on one side, the bypassing gear is meshed with a driving gear on the bottom lifting motor, and the bottom lifting motor drives the gear box to turn around the rotating shafts.

7. The thread passing plate bottom raising device of a weft knitting machine according to claim 6, wherein: the rotating shaft on the gear box is movably arranged on a bearing, the bearing is arranged on a fixed plate through a bearing seat, and the gear box is arranged in a square groove of the fixed plate and overturned in the square groove; a second magnetic steel is arranged above the left side of the gear box, the upper end and the lower end of the fixed plate on the left side are respectively provided with a proximity switch, and the proximity switches and the second magnetic steel work in a matched mode; the right side of the gear box is provided with a limit screw, the upper end and the lower end of the fixing plate on the right side are respectively provided with a limit stop, and the limit stops and the limit screw work in a matched mode.

8. The thread passing plate bottom raising device of a weft knitting machine according to claim 1, wherein: the threading plate and the lead plate are fixed on the groove needle plate connecting rod, a first groove and a second groove are respectively arranged above the opposite side edges of the threading plate and the lead plate, and two sides of the clamping block are respectively clamped into the first groove and the second groove; the threading plate is further provided with a boss, the lead plate is further provided with a third groove, and the boss is clamped into the third groove.

9. The thread plate bottom raising device of a weft knitting machine according to claim 8, wherein: the threading plate and the lead plate are fixed on the groove needle plate connecting rod after being clamped with each other, and a step surface is arranged on the lower edge of the groove needle plate connecting rod; the threading board is formed by a plurality of threading branch boards in a combined mode, the threading branch boards are arranged on the step surface of the groove needle board connecting rod, and adjacent threading branch boards are clamped and fixed into a whole.

10. The thread passing plate bottom raising device of a weft knitting machine according to claim 1, wherein: the threading plate assembly is fixed on a linear bearing seat, and the linear bearing seat moves up and down along the sliding rod.

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