阅读说明：本技术 一种横机的喂纱机构 (Yarn feeding mechanism of flat knitting machine ) 是由 孙平范 徐卫东 李立军 胡跃勇 海港 于 2020-08-06 设计创作，主要内容包括：本发明公开了一种横机的喂纱机构,包括天杆,天杆两侧设有独立驱动的第一纱嘴组件和第二纱嘴组件,第一、第二纱嘴组件可沿天杆滑动；第一纱嘴组件还包括第一纱嘴和纱嘴导向板,第一纱嘴置于纱嘴导向板中间的导向槽内；所述纱嘴导向板上设有朝第二纱嘴组件方向凸出的第一凸块,以及背离第二纱嘴组件方向凸出的第二凸块,第一凸块和第二凸块位于第一纱嘴两侧；所述第二纱嘴组件还包括第二纱嘴,第二纱嘴底端抵在第一凸块的凸面或第二凸块的凹面上。多针床结构在编织圆筒织物时,通过调整第二纱嘴在前后方向上的位置,例如靠近前针床或靠近后针床,通过位置变换来消除反色现象。(The invention discloses a yarn feeding mechanism of a flat knitting machine, which comprises a top rod, wherein a first yarn nozzle component and a second yarn nozzle component which are independently driven are arranged on two sides of the top rod, and the first yarn nozzle component and the second yarn nozzle component can slide along the top rod; the first yarn nozzle component also comprises a first yarn nozzle and a yarn nozzle guide plate, and the first yarn nozzle is arranged in a guide groove in the middle of the yarn nozzle guide plate; the yarn feeder guide plate is provided with a first convex block protruding towards the direction of the second yarn feeder component and a second convex block protruding away from the direction of the second yarn feeder component, and the first convex block and the second convex block are positioned on two sides of the first yarn feeder; the second yarn nozzle assembly further comprises a second yarn nozzle, and the bottom end of the second yarn nozzle abuts against the convex surface of the first bump or the concave surface of the second bump. The multi-needle bed structure eliminates the reverse phenomenon by changing the position of the second yarn feeder when knitting the tubular fabric by adjusting the position in the front-rear direction, for example, near the front needle bed or near the rear needle bed.)

1. A yarn feeding mechanism of a flat knitting machine comprises a top bar, wherein conveyor belts are arranged on two sides of the top bar and are independent of each other; a first yarn nozzle component and a second yarn nozzle component are respectively arranged on two sides of the top rod, the first yarn nozzle component and the second yarn nozzle component respectively comprise a yarn nozzle seat, the yarn nozzle seats are fixed on the conveying belt, and the first yarn nozzle component and the second yarn nozzle component can slide along the top rod; the method is characterized in that:

the first yarn nozzle assembly further comprises a first yarn nozzle and a yarn nozzle guide plate, the first yarn nozzle and the yarn nozzle guide plate are mounted on the first yarn nozzle seat, and the first yarn nozzle is arranged in a guide groove in the middle of the yarn nozzle guide plate; the yarn feeder guide plate is provided with a first convex block protruding towards the direction of the second yarn feeder component and a second convex block protruding away from the direction of the second yarn feeder component, and the first convex block and the second convex block are positioned on two sides of the first yarn feeder; the second yarn nozzle assembly further comprises a second yarn nozzle, and the bottom end of the second yarn nozzle abuts against the convex surface of the first bump or the concave surface of the second bump.

2. A yarn feeding mechanism for a weft knitting machine as claimed in claim 1, characterized in that: the first yarn nozzle seat is also provided with a square sliding groove, a movable sliding block is arranged in the square sliding groove, and a rack is arranged on one side, facing the top rod, of the sliding block; the transmission shaft is arranged on the top rod, and a toothed structure is arranged on one side of the transmission shaft, which faces the first yarn nozzle seat, and is meshed with the rack on the sliding block; the first yarn nozzle is fixed on the sliding block, and the transmission shaft drives the first yarn nozzle to move up and down along the guide groove of the yarn nozzle guide plate.

3. A yarn feeding mechanism for a weft knitting machine according to claim 2, characterized in that: and a spring is further arranged in the square sliding groove of the first yarn nozzle seat, one end of the spring is abutted against the top of the square sliding groove, and the other end of the spring is abutted against the sliding block.

4. A yarn feeding mechanism for a weft knitting machine as claimed in claim 1, characterized in that: porcelain eyes are arranged on the yarn nozzle guide plate and the second yarn nozzle.

5. A yarn feeding mechanism for a weft knitting machine as claimed in claim 1, characterized in that: the upper end and the lower end of the yarn nozzle seat are both provided with pulleys, the top and the bottom of the top rod are both provided with steel wires, and the pulleys are in rolling fit with the steel wires.

6. A yarn feeding mechanism for a weft knitting machine according to claim 5, characterized in that: two pulleys are arranged at the lower end of the yarn nozzle seat, the yarn nozzle seat is installed on the yarn nozzle seat through the slotted hole, and a flat spring control plate are arranged between the two pulleys at the lower end.

Technical Field

The invention belongs to the technical field of knitting machinery, and particularly relates to a yarn feeding mechanism of a flat knitting machine.

Background

When the flat knitting machine carries out plating knitting, the two independent yarn nozzles respectively drive the main yarn and the plating yarn, the main yarn and the plating yarn are arranged according to the sequence of the main yarn and the plating yarn, and then the yarn is supplied to the knitting needle, so that the main yarn is presented on the surface side of the fabric. The knitted fabric needs to always maintain the front-back relationship between the main yarn and the plating yarn, but the knitted fabric may have a reverse color, that is, the front-back relationship between the plating yarn and the main yarn is reversed. In order to eliminate the reverse color phenomenon of the knitted fabric, the positions of the two yarn nozzles are required to be finely adjusted, so that the interval and the angle between the two yarns are adjusted.

When the two needle beds feed yarn, the yarn nozzle is always positioned at the center position of the plate openings of the front and the back needle beds, and the main yarn and the plating yarn only have left and right position difference, namely, the yarn is arranged and fed to the knitting needle according to the sequence of the main yarn and the plating yarn in the moving direction, and the front and the back position difference does not exist. When a multi-needle bed structure is adopted, the angular positions of the front needle bed and the rear needle bed are changed, and the front position difference and the rear position difference of the main yarn position and the plating position need to be adjusted, so that the phenomenon of reverse color in the plating process is avoided.

Disclosure of Invention

The invention aims to provide a yarn feeding mechanism of a flat knitting machine, which is suitable for a multi-needle bed structure and can eliminate the phenomenon of reverse color by adjusting the front-back position difference of a yarn nozzle.

Therefore, the technical scheme of the invention is as follows: a yarn feeding mechanism of a flat knitting machine comprises a top bar, wherein conveyor belts are arranged on two sides of the top bar and are independent of each other; a first yarn nozzle component and a second yarn nozzle component are respectively arranged on two sides of the top rod, the first yarn nozzle component and the second yarn nozzle component respectively comprise a yarn nozzle seat, the yarn nozzle seats are fixed on the conveying belt, and the first yarn nozzle component and the second yarn nozzle component can slide along the top rod; the method is characterized in that:

the first yarn nozzle assembly further comprises a first yarn nozzle and a yarn nozzle guide plate, the first yarn nozzle and the yarn nozzle guide plate are mounted on the first yarn nozzle seat, and the first yarn nozzle is arranged in a guide groove in the middle of the yarn nozzle guide plate; the yarn feeder guide plate is provided with a first convex block protruding towards the direction of the second yarn feeder component and a second convex block protruding away from the direction of the second yarn feeder component, and the first convex block and the second convex block are positioned on two sides of the first yarn feeder; the second yarn nozzle assembly further comprises a second yarn nozzle, and the bottom end of the second yarn nozzle abuts against the convex surface of the first bump or the concave surface of the second bump.

Preferably, the first yarn nozzle seat is further provided with a square sliding groove, a movable sliding block is arranged in the square sliding groove, and a rack is arranged on one side, facing the top rod, of the sliding block; the transmission shaft is arranged on the top rod, and a toothed structure is arranged on one side of the transmission shaft, which faces the first yarn nozzle seat, and is meshed with the rack on the sliding block; the first yarn nozzle is fixed on the sliding block, and the transmission shaft drives the first yarn nozzle to move up and down along the guide groove of the yarn nozzle guide plate.

Preferably, a spring is further arranged in the square sliding groove of the first yarn nozzle seat, one end of the spring abuts against the top of the square sliding groove, and the other end of the spring abuts against the sliding block.

Preferably, porcelain eyes are arranged on the yarn nozzle guide plate and the second yarn nozzle.

Preferably, the upper end and the lower end of the yarn nozzle seat are both provided with pulleys, the top and the bottom of the top rod are both provided with steel wires, and the pulleys are in rolling fit with the steel wires.

Preferably, two pulleys are arranged at the lower end of the yarn nozzle seat, the yarn nozzle seat is mounted on the yarn nozzle seat through a slotted hole, and a flat spring control plate are arranged between the two pulleys at the lower end.

The first yarn nozzle is a lifting yarn nozzle and is used for supplying main yarn, the second yarn nozzle is a fixed yarn nozzle and is used for supplying plating yarn, and the lifting yarn nozzle can enable the yarn nozzle components to be staggered when meeting, so that the yarn nozzles on the opposite side or other top rods are prevented from colliding. For processing and simple to operate, first yarn mouth and second yarn mouth can use the yarn mouth seat of same structure, and first yarn mouth is installed on the slider of liftable, and second yarn mouth snap-on can on the yarn mouth seat.

Two groups of yarn nozzles are respectively arranged on two sides of the top rod and driven by the independently driven conveyor belts, so that the two groups of yarn nozzles can independently move along the top rod; the bottom parts of the first yarn nozzle and the second yarn nozzle are in opposite inclined states, and a first protruding block protruding towards the back needle bed and a second protruding block protruding towards the front needle bed are arranged on two sides of the first yarn nozzle. The second yarn nozzle is of an elastic sheet-like structure, and when the second yarn nozzle abuts against the convex surface of the first bump, the first bump can enable the second yarn nozzle to be close to the back needle bed; when the second yarn nozzle moves to the position of the second bump, the side, facing the second yarn nozzle, of the second bump is in a groove state, the second yarn nozzle abuts against the bottom of the groove, and therefore the second yarn nozzle is close to the front needle bed. The first lug and the second lug with opposite protruding directions enable the two yarn mouths to generate position difference in the front-back direction. The multi-needle bed structure eliminates the reverse phenomenon by changing the position of the second yarn feeder when knitting the tubular fabric by adjusting the position in the front-rear direction, for example, near the front needle bed or near the rear needle bed.

Drawings

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

FIG. 1 and FIG. 2 are schematic structural views of the present invention;

FIG. 3 is a side sectional view of the mounting of the yarn feeder assembly and the drop arm;

FIGS. 4 and 5 are exploded views of parts of the yarn nozzle base;

FIGS. 6 and 7 are schematic structural views of a first yarn nozzle assembly;

fig. 8 is a schematic structural view of a yarn feeder guide plate;

fig. 9 is a schematic structural view of a second yarn feeder.

Labeled as: the yarn feeder comprises a top rod 1, a conveyor belt 2, a yarn nozzle seat 3, a lining plate pressing plate 4, a lining plate main body 5, a pulley 6, a steel wire 7, a flat spring 8, a flat spring supporting block 9, a flat spring control plate 10, a transmission shaft 11, a tooth-shaped structure 12, a square sliding groove 13, a sliding block 14, a rack 15, a spring 16, a spring blocking seat 17, a first yarn nozzle component 18, a second yarn nozzle component 19, a first yarn nozzle 20, a yarn nozzle connecting rod 21, a yarn nozzle guide plate 22, a first convex block 23, a second convex block 24, a second yarn nozzle 25, a porcelain eye fixing plate 26 and a porcelain eye 27.

Detailed Description

See the drawings. The yarn feeding mechanism comprises 4 parallel arranged top rods 1, 2 conveying belts 2 are sleeved on two sides of each top rod, a yarn nozzle assembly is installed on each conveying belt, a driving motor is further arranged on each top rod and drives the conveying belts, all the conveying belts are independent of each other, and 16 groups of yarn nozzle assemblies can be driven. The single top rod 1 is provided with a first yarn nozzle component 18 on one side and a second yarn nozzle component 19 on the other side.

For simple to operate, all yarn mouth subassemblies can adopt general yarn mouth seat 3, are fixed with welt clamp plate 4 and welt main part 5 on the yarn mouth seat, and welt clamp plate 4 and welt main part 5 pass through the fix with screw, and conveyer belt 2 is pressed from both sides between welt clamp plate 4 and welt main part 5, and still is equipped with the lock tooth with conveyer belt locking on the welt main part.

Four corners of the yarn nozzle seat 3 are respectively provided with a pulley 6, the top and the bottom of the top rod are respectively provided with a steel wire 7, and the pulleys can roll along the steel wires, so that the two yarn nozzle components can slide along the top rod. Two pulleys at the lower end of the yarn nozzle seat 3 are installed on the yarn nozzle seat through long slotted holes, a flat spring 8, a flat spring supporting block 9 and a flat spring control plate 10 are arranged between the two pulleys at the lower end, the flat spring control plate 10 is installed on the yarn nozzle seat through a pin shaft, two ends of the flat spring control plate can rotate around a middle pin shaft, one opposite ends of the two flat spring control plates 10 are connected with the flat spring 8, the other opposite ends of the two flat spring control plates are fixed on the pulleys, and the flat spring supporting block 9 is located in the middle of the flat spring and can limit. In the initial state, the end of the flat spring control plate 10 connected with the pulley is upwarped, so that the two pulleys at the lower end are positioned above the long slotted hole, after the pulley is clamped into the steel wire, the two pulleys at the lower end move downwards, so that the end of the flat spring control plate 10 connected with the flat spring is upwarped, and under the elastic action of the flat spring, the pulley can be tightly matched with the steel wire.

Two sides of the top rod 1 are both provided with a transmission shaft 11, and one side of the transmission shaft, which faces the yarn nozzle seat, is provided with a tooth-shaped structure 12; the yarn nozzle seat 3 is provided with a square sliding groove 13, a movable sliding block 14 is arranged in the square sliding groove, and a rack 15 is arranged on one side, facing the top rod, of the sliding block 14; the toothed structure 12 on the transmission shaft is meshed with the rack 15 on the sliding block, so that the sliding block can be driven to move up and down along the square sliding groove; a spring 16 is further arranged in the square sliding groove 13, one end of the spring is fixed at the top of the square sliding groove through a spring blocking seat 17, and the other end of the spring abuts against the sliding block 14.

The yarn nozzle assembly can be divided into a first yarn nozzle assembly 18 and a second yarn nozzle assembly 19 which are arranged on two sides of the top rod, and the first yarn nozzle assembly and the second yarn nozzle assembly adopt yarn nozzle seats with a common structure. The first yarn nozzle assembly 18 comprises a first yarn nozzle 20, a yarn nozzle connecting rod 21 and a yarn nozzle guide plate 22 besides a first yarn nozzle seat, the first yarn nozzle 20 is fixed on the sliding block 14 through the yarn nozzle connecting rod 21, and the sliding block can drive the first yarn nozzle to move up and down along the square sliding groove; the yarn nozzle guide plate 22 is fixed at the bottom of the first yarn nozzle seat, a guide groove is formed in the middle of the yarn nozzle guide plate 22, and the first yarn nozzle moves up and down along the guide groove. And a first convex block 23 protruding towards the direction of the second yarn feeder component and a second convex block 24 protruding away from the direction of the second yarn feeder component are arranged on two sides of the guide groove of the yarn feeder guide plate, and the protruding directions of the first convex block and the second convex block are opposite.

The second nozzle assembly 19 comprises, in addition to a second nozzle holder, a second nozzle 25 directly fixed to the second nozzle holder. The slide block, the spring and other lifting related components on the second yarn mouth seat do not work, and the movable yarn mouth seat can be installed or not installed during installation and only is left alone. When the first and second yarn feeder assemblies are mounted on the top bar, the first and second yarn feeders 20 and 25 are relatively inclined, that is, the bottoms of the first and second yarn feeders are close to each other, and the second yarn feeder 25 is of a thin sheet structure with elasticity, and when the bottom end of the second yarn feeder abuts against the protruding position of the first projection 23 or the recessed position of the second projection 24, a position difference is generated between the first and second yarn feeders in the front-rear direction.

Porcelain eye fixing plates 26 are further arranged on the yarn feeder guide plate and the second yarn feeder, and porcelain eyes 27 are arranged on the porcelain eye fixing plates.

The top bar is positioned between the front needle bed and the back needle bed, the first yarn nozzle 20 is a main yarn nozzle, the second yarn nozzle 25 is a plating nozzle, the first yarn nozzle is positioned in the center of the plate opening, and the second yarn nozzle is close to the front needle bed or the back needle bed.

When the machine head moves left, and the front needle bed weaves, the position relationship of the first yarn nozzle and the second yarn nozzle is shown in figure 1, at this time, the bottom end of the second yarn nozzle 25 is positioned at the concave position of the second lug 24 of the yarn nozzle guide plate, and the second yarn nozzle 25 is slightly close to the front needle bed.

When the machine head moves to the right and the back needle bed is used for weaving, the position of the second yarn nozzle 25 is changed, the position relation of the first yarn nozzle and the second yarn nozzle is shown in figure 2, at the moment, the bottom end of the second yarn nozzle 25 is positioned at the protruding position of the first convex block 23 of the yarn nozzle guide plate, and the second yarn nozzle 25 is slightly close to the back needle bed.