CN113512810B - Yarn tension self-adjusting flat knitting machine yarn nozzle device - Google Patents

Abstract

The tension self-adjusting device is added on the basis of the original yarn nozzle assembly and comprises a sliding yarn cylinder and a sliding groove, and the sliding yarn penetrating cylinder can move up and down in the sliding groove. The yarn enters the sliding yarn-threading cylinder from one side of the computerized flat knitting machine, then enters the fixed yarn-threading cylinder, and finally enters the yarn nozzle to be knitted. The position of the sliding yarn penetrating tube in the sliding groove is regulated and controlled by the tension of the yarn, when the machine head rotates, the tension of the yarn is reduced, the sliding yarn penetrating tube automatically descends in the sliding groove, and therefore the yarn is tensioned, and weaving is facilitated. The yarn tension self-adjusting flat knitting machine yarn nozzle device is arranged above the fixed yarn cylinder, the occupied area is small, the manufacturing cost is low, when the machine head rotates, the automatic regulation and control can be carried out according to the yarn tension change, manual intervention is not needed, and the problem that the size and the structure of a fabric piece edge coil are uneven can be solved.

Description

A yarn feeder device for self-adjusting yarn tension

technical field

The invention belongs to the technical field of textile machinery, in particular to a yarn feeder device for a flat knitting machine with self-adjusting yarn tension.

Background technique

The yarn feeder on the computerized flat knitting machine is used to guide the yarn into weaving. The yarn first passes through the yarn bobbin on the yarn feeder, and then passes through the yarn feeder mouth for knitting. After the yarn feeder knits a row, it will leave the knitting area first, and then the machine head will control it to turn back to knit the next row. The existing flat knitting machine generally enters from one side of the machine. During the back knitting process, the remaining thread at the yarn feeder cannot be recovered in time, which increases the yarn tension and causes the stitches on the edge of the woven sheet to be different in size up and down. Different tension will make the loop size different, which will create 1-2 inches of uneven structure at the edge of the weave, that is, flower mesh. The existing computerized flat knitting machines are equipped with tensioning devices on the side of the machine to recover the excess thread, but these tensioning devices are far away from the yarn feeder, the rotation speed of the machine head is too fast, the response of the tensioning device is not timely enough, and it is difficult to adjust the yarn tension in time. .

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a yarn feeder device for a flat knitting machine with self-adjusting yarn tension, which solves the problem that it is difficult to adjust the yarn tension in time when the machine head rotates. Self-regulation, without manual intervention, can improve the problem of uneven size and structure of loops at the edge of the woven sheet.

In order to solve the above technical problems, a technical solution adopted in the present invention is: the yarn feeder device for self-adjusting yarn tension includes yarn bobbins, yarn plating racks, yarn storage devices, edge springs, and tension self-adjusting devices. , Fix the yarn threading bobbin and the yarn feeder, the yarn is unwound from the bobbin bobbin, and then wound to the yarn storage device after passing through the feeding frame, and is passed to the tension self-adjusting device on the yarn feeder through the edge spring, and then passes through the fixed threading device. The tube enters the yarn feeder;

The tension self-adjusting device is provided with a chute, in which a sliding yarn bobbin capable of sliding back and forth along the chute is arranged. The yarn passes through the sliding yarn bobbin and then enters the yarn feeder through the fixed yarn piercing cylinder.

Further, the tension self-adjusting device is installed above the fixed yarn threading drum.

Further, the tension self-adjusting device is fixed on the yarn feeder rod.

Further, the tension self-adjusting device is inclined upward by a certain angle.

Further, when the sliding yarn passing drum is located at the uppermost end of the chute, the angle α formed by the yarn passing between the sliding yarn passing drum and the fixed yarn passing drum and the tension self-adjusting device is not less than 90°.

Further, when the sliding yarn threading drum is located at the uppermost end of the chute, the angle α formed by the yarn passing between the sliding threading drum and the fixed threading drum and the tension self-adjusting device is 90°-93°.

The advantages of the present invention are as follows:

The yarn feeder device of the yarn tension self-adjusting flat knitting machine of the present invention is installed above the fixed yarn bobbin, occupies a small area and is low in cost. The problem of uneven size and structure of loops at the edge of the woven sheet.

Description of drawings

Fig. 1 is a schematic structural diagram of the yarn feeder device of the flat knitting machine with self-adjusting yarn tension according to the present invention.

FIG. 2 is a schematic structural diagram of the tension self-adjusting device.

FIG. 3 is a schematic diagram of the installation of the tension self-adjusting device.

Description of reference numerals: 1-yarn bobbin, 2-yarn plating rack, 3-yarn storage device, 4-side thread spring, 5-tension self-adjusting device, 6-fixed yarn bobbin, 7-yarn feeder, 8-machine Head, 9-yarn feeder rod, 10-sliding yarn bobbin, 11-chute.

Detailed ways

In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be further described below with reference to the specific drawings.

Many specific details are set forth in the following description to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can do so without departing from the connotation of the present invention. Similar promotions are made, so the present invention is not limited by the specific embodiments disclosed below.

The yarn feeder device for self-adjusting yarn tension of the present invention takes the yarn feeder structure of Longxing E14 double-needle bed computerized flat knitting machine as an example, and the specific parameters are: machine number E14; maximum speed 1.4m/s; width 52 inches. The yarn feeder device of the flat knitting machine is shown in Figure 1, including a yarn bobbin 1, a yarn plating frame 2, a yarn storage device 3, a side spring 4, a tension self-adjusting device 5, a fixed yarn bobbin 6 and a yarn feeder 7. The thread is unwound from the yarn bobbin 1, passes through the yarn plating frame 2 and then enters the yarn storage device 3, passes through the edge spring 4 to the tension self-adjusting device 5 on the yarn feeder, and then enters the yarn feeder 7 through the fixed yarn threading bobbin 6 , and finally enter the knitting area.

When the machine head 8 moves left and right to select the yarn feeder for knitting, a certain amount of excess thread will be generated, and the side thread spring 4 can absorb a part of the excess thread by rebounding, so that the yarn tension can be appropriately increased. However, because the edge spring is far away from the yarn feeder, the machine head drives the yarn feeder to rotate too fast, and there is still a small amount of excess thread that cannot be absorbed by the edge spring, which makes the edge coil structure uneven.

As shown in FIG. 2 , the tension self-adjusting device 5 is fixed on the yarn feeder rod 9 by screws, and the tension self-adjusting device 5 is provided with a chute 11 . The yarn bobbin 10, the yarn passes through the sliding yarn bobbin 10 and then enters the yarn feeder 7 through the fixed yarn bobbin 6. Under the action of the yarn tension, the sliding yarn bobbin 10 moves up and down in the chute 11 . Under normal weaving, the yarn tension is stable, and the sliding yarn bobbin 10 is located above the chute 11 under the action of the yarn. When the machine head 8 drives the yarn feeder 7 to rotate, the yarn tension becomes smaller, and the sliding yarn bobbin 10 slides down in the chute 11 to tension the yarn. The distance between the sliding yarn passing drum 10 and the fixed yarn passing drum 6 gradually increases during the sliding process, and the remaining thread is absorbed by the sliding yarn passing drum, which can ensure that the yarn tension of the woven sheet is in a stable state.

The size of the tension self-adjusting device 5 is set according to the available space of the yarn feeder. The tension self-adjusting device 5 is installed above the fixed yarn threading drum 6, and the distance is H. The length of the chute 11 is L, the width is M, and the height is N. The sliding yarn passing tube 10 moves in the chute 11. Under the normal knitting state, the sliding yarn passing tube 10 is located above the chute 11 under the action of the yarn tension. The purpose of adjusting the tension.

In order to achieve the above-mentioned purpose, the tension self-adjusting device should be inclined upward, and the inclination angle is β; in the process of sliding down the threading bobbins, the distance K between the two threading bobbins should gradually become longer, so as to ensure that the remaining thread is covered. Therefore, when the sliding yarn passing tube 10 is located at the uppermost end of the chute 11, the angle formed between the yarn passing through the sliding yarn passing tube 10 and the fixed yarn passing tube 6 and the tension self-adjusting device 5 α is not less than 90°, and is generally selected as 90° to 93°.

A yarn feeder device for self-adjusting yarn tension provided by the present application has been introduced in detail above. The principles and implementations of the present application are described with specific examples. The descriptions of the above examples are only for the purpose of Help to understand the method of the present application and its core idea; meanwhile, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation and application scope. In summary, the content of this specification It should not be construed as a limitation of this application.

Claims (6)

1. The utility model provides a yarn tension self-interacting's flat-bed machine yarn mouth device which characterized in that: the automatic yarn feeding device comprises a yarn barrel (1), a yarn adding frame (2), a yarn storage device (3), a side yarn spring (4), a tension self-adjusting device (5), a fixed yarn threading barrel (6) and a yarn nozzle (7), wherein yarn is unwound from the yarn barrel (1), is wound to the yarn storage device (3) after passing through the yarn adding frame (2), is transmitted to the tension self-adjusting device (5) on the yarn nozzle through the side yarn spring (4), and enters the yarn nozzle (7) through the fixed yarn threading barrel (6);

the tension self-adjusting device (5) is provided with a sliding groove (11), a sliding yarn threading barrel (10) capable of sliding back and forth along the sliding groove (11) is arranged in the sliding groove (11), and yarns penetrate through the sliding yarn threading barrel (10) and then enter a yarn nozzle (7) through a fixed yarn threading barrel (6).

2. The yarn tension self-adjusting weft knitting machine yarn feeder apparatus according to claim 1, characterized in that: the tension self-adjusting device (5) is arranged above the fixed yarn threading barrel (6).

3. The yarn tension self-adjusting weft knitting machine yarn feeder apparatus according to claim 1, characterized in that: the tension self-adjusting device (5) is fixed on the yarn nozzle rod (9).

4. The yarn tension self-adjusting weft knitting machine yarn feeder apparatus according to claim 1, characterized in that: the tension self-adjusting device (5) inclines upwards for a certain angle.

5. The yarn tension self-adjusting weft knitting machine yarn feeder apparatus according to claim 1, characterized in that: when the sliding yarn-threading drum (10) is positioned at the uppermost end of the sliding chute (11), the yarn passing through the sliding yarn-threading drum (10) and the fixed yarn-threading drum (6) forms an included angle alpha with the tension self-adjusting device (5) which is not less than 90 degrees.

6. The yarn tension self-adjusting weft knitting machine yarn feeder apparatus according to claim 5, characterized in that: when the sliding yarn-threading cylinder (10) is positioned at the uppermost end of the sliding chute (11), the yarn passing through the sliding yarn-threading cylinder (10) and the fixed yarn-threading cylinder (6) forms an included angle alpha of 90-93 degrees with the tension self-adjusting device (5).

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