KR100297407B1 - Automatic knitting-width controlling device of flat knitting machine - Google Patents

Abstract

PURPOSE: Provided is an automatic knitting-width controlling device of a flat knitting machine which is characterized by having excellent productivity, showing a natural pattern by control of knitting-width, having excellent marketability and having economic efficiency because the shoulder part of the knit is not cut and scrapped. CONSTITUTION: The automatic knitting-width controlling device is comprised of: as a feeder driving part(20), a device which is installed on a pair of carriages, reciprocating a feeder part(10); a detecting device sensing go-astern of the feeder part; a controlling device ordering total operation by information traveled from the detecting device; as a feeder part(10), a transferring device transferring knitting yarn with a rotation-operating; an advance-and-retreat operating device reciprocating a latch needle; an elevating device elevating one in the advance-and-retreat operating device; and an interrupter occluded with the feeder driving part(20) selectively.

Description

Automatic Width Control Device in Knitting Machine

The present invention relates to an automatic knitting width control device of the flat knitting machine, and in particular, a device that can gradually reduce the knitting width at a desired angle when knitting the shoulder portion of the knitted fabric.

There are two types of flat knitting machines: manual flat knitting machines and automatic flat knitting machines. In the case of manual flat knitting machines, skilled workers use manual tools to reduce the width of the knitted fabric shoulder width by the desired width on both sides. However, in the case of automatic knitting machines, knitting speed is superior to manual knitting machines, but the width of shoulder portion cannot be reduced.

Therefore, in the case of automatic flat knitting machine, the front plate and the back plate of the knitted fabric are knitted in a square and the shoulder portion is inclinedly cut and then the shoulder portion of the knitted fabric is sealed. Such a knitting and sewing process will not only cause a great loss of knitting but also reduce the merchandise of the knitting.

The knitting width control device of the automatic knitting machine developed to date does not reach the level that can reduce the shoulder portion of the knitted fabric to the width of the desired angle, but the loss amount of the knitted fabric thrown away by the foundation by knitting the shoulder portion of the knitted fabric in a step shape I'm staying at about half. Such a width control device has a benefit of halving the loss of the knitted fabric, but the deterioration of the merchandise by the foundation is inevitable.

Considering the productivity of flat knitting machine, the use of automatic flat knitting machine is inevitable, and the development of automatic flat width control device that can increase the merchandise without loss of knitted fabric is urgently needed.

In order to solve the above problems, the present invention aims to automate the width control method of a manual knitting machine by installing a separate automatic width control device on a carriage of an existing circular knitting machine.

1 is a perspective view of a flat knitting machine showing the position where the apparatus of the present invention is installed.

2 is a perspective view of the right side showing the overall configuration of the present invention.

3A is a left side configuration diagram in a state where the feeder portion of the present invention is retracted.

3B is a left side configuration diagram of the feeder unit of the present invention in an advanced state.

Figure 4a is a plan view of the feeder unit retracted state of the present invention.

4B is a plan view of the feeder portion of the present invention in the advanced state.

5 is an exemplary diagram for explaining a process of linking the feeder unit and the transfer needle set of the present invention in two steps.

6 is an explanatory diagram showing a process in which the transfer needle set, the push plate, and the ratchet teeth of the present invention are interlocked.

FIG. 7 is an explanatory diagram showing a process of transferring the knitting yarn to the inner ratchet needle again, in which the knitting yarn transferred to the transfer needle set is according to the present invention.

8 is an explanatory view showing a process in which the ratchets transferred to the transfer needle set are retracted in a resting state in the present invention.

* Explanation of symbols for main parts of the drawings

A: Part width control device

10: feeder drive unit 20: feeder unit (feeder)

11 substrate 12 stepping motor

13: first optical fiber 14: eccentric rotating arm

15: connector 16: guide rail

21: optical blocker 22: slider

23: guider 24: stepping motor

25 gear 26 timing belt

27: transfer needle set 28: second optical sensor

29: optical blocker 31: solenoid

32: first push plate 33: second push plate

34: third push plate 41: needle bed

42: latch needle 43: butt

44, 44 ': knitting yarn

The structure of the present invention will be described in detail with reference to the accompanying drawings.

Automatic width control device (A) of the present invention is mounted in a symmetrical structure on both sides of the front, rear of the carriage. In other words, four sets of automatic width control devices (A) of symmetrical structure are mounted on one carriage, and when knitting the shoulder portion, the same number of noses on both sides of the knitted fabric are reduced to match the angle inputted by the computer input command. Will go out.

The present invention is composed of a feeder drive unit 10 and the feeder unit 20 to move forward or backward by the operation of the feeder drive unit (10).

The feeder driver 10 has an substrate 11 fixed to one side of the carriage, and the eccentric rotation arm that rotates at a predetermined angle according to the rotation of the stepping motor 12 and the stepping motor 12 installed on the substrate 11. (14: an eccentric rotary arm), a first optical sensor 13 installed on the stepping motor 12, a guide rail 16 provided on one side of the substrate 11 and a signal of the optical sensor are received and input to the computer It is composed of a connector 15 for transmitting the command.

The feeder unit 20 moves forward along the slider 22 and the guide rail 16 on which the sliding roller of the eccentric rotating arm 14 which rotates in accordance with the rotational direction of the stepping motor 12 of the feeder driving unit 10 moves up and down. The retractor is coupled to the feeder driving unit 10 by the guider 23.

The rear of the feeder unit 20 is provided with a solenoid 31 for raising and lowering the second push plate 33 and the optical blocker plate 21 that is engaged with the first optical sensor 13 of the feeder driver 10. It protrudes toward the rear. Stepping motor 24 is mounted in the center of the feeder unit 20, and the transfer needle set 27 is coupled to the rotating shaft in the front.

Gears 25 of the same specification are coupled to the shaft of the stepping motor 24 of the feeder unit and the shaft of the transfer needle set 27, and they are linked by the timing belt 26.

In addition, the optical blocker plate 29 which pivots with the gear 25 is installed in the shaft of the stepping motor 24, and engages with the 2nd optical sensor 28 provided in the front.

On the other hand, the second bottom plate 33, which is operated up and down by the solenoid 31 is installed on the rear bottom surface of the feeder unit 20, immediately after the first push plate 32 at a slight distance side by side Is fixedly installed, and a third push plate 34 is fixedly installed at a distance in front of one side of the second push plate 33.

In other words, the first push plate 32 and the second push plate 33 have the same path, but the third push plate 34 is different from the path. 2 shows that the third push plate 34 protrudes to the right.

Each stepping motor 12, 24, and solenoid 31 of the present invention is connected to a terminal on the bottom of the connector 15, respectively, and operated at a time difference according to a command input to a computer.

When the stepping motor 12 of the feeder drive unit 10 rotates by the commanded angle, the feeder unit 20 moves forward or backward. This basic operation is shown in detail in FIGS. 3 and 4.

When the feeder unit 20 is completely retracted, the optical blocker plate 21 is engaged with the first optical sensor 13 to stop the operation of the stepping motor 12 and move forward to resume operation of the stepping motor 12. Resumed.

The stepping motor 24 of the feeder unit 10 controls the angle of rotation of the transfer needle set 27 and operates the optical blocker plate 29 for opening the second optical sensor 28. When the power is turned on or off by the second optical sensor 28, it is transmitted to the computer through the connector 15, and the operation of the stepping motor 24 and the solenoid 31 of the feeder unit 20 is controlled.

The solenoid 13 moves up and down in accordance with a command of a computer transmitted through the connector 15, and the second push plate 33 floats toward the bottom by the up and down operations.

In the transfer needle set 27 operated by the stepping motor 24, a plurality of needles are fixed to the body of the rotating shaft at the same interval as the arrangement interval of the latch needles 42 of the needle bed 41. The needle of the transfer needle set 27 is bent backwards and needle eyes are formed at each end of the needle.

The needle ear has a width and length such that the head portion of the latch needle 42 can be sunk sufficiently.

All of the devices of the present invention help the transfer needleset 27 to cooperate with the ratchet needle 42 to serve to adjust the deflection width.

First, the carriage to which the puncture adjustment device (A) of the present invention is mounted operates to gradually decrease the amplitude of left and right by a servo motor when the shoulder portion of the knitted fabric is knitted.

The feeder driving unit 10 serves to advance or retract the feeder unit 20 by the stepping motor 12, and the feeder unit 20 lifts and lowers the second push plate 33 by the solenoid 31. In addition, the stepping motor 24 serves to turn the transfer needle set 27 within a predetermined angle.

The operation of the present invention will now be described step by step.

Fig. 5A shows the preparation state for the apparatus of the present invention to perform the width control operation. That is, the carriage is stopped on the ratchet needle to the nose narrowing control device.

5 (B) shows the state in which the ratchet needle 42 is also retracted by the second push plate 33 which is retracted after the feeder unit 20 transfers the knitting yarn and is also lowered. At this time, it can be seen that the latch of the ratchet needle 42 is closed and the knitting yarn 44 is transferred to the transfer needle set 27.

FIG. 6 shows the transfer needle set 27, the latch needle 42 and the two push plates 32 and 33 working together during the process from FIG. 5 (A) to FIG. 5 (B). Describe the process in more detail.

Fig. 6A shows the basic state. FIG. 6 (B) shows a state in which the feeder part 20 is slightly advanced while the transfer needle set 27 pivots down to hook the hook portion of the ratchet needle 42 to the needle ear. At this time, the ratchet needle 42 is slightly pushed out of the needle bed 41 because the first push plate 32 pushes the butt 43 forward.

6 (C) shows that the feeder unit 20 moves one step forward and the ratchet needle 42 also moves forward by the first push plate 32.

At this time, since the knitting yarn 44 is in a predetermined position, it is out of the latch of the ratchet needle 42, and the solenoid 31 is operated to prepare the retraction of the ratchet needle 42 by descending the second push plate 33. .

FIG. 6 (D) shows a state in which the latch needle 42 is closed by the knitting yarn while the ratchet needle 42 retreats one step by the second push plate 33, and FIG. 6 (E) transfers the knitting yarn beyond the latch. 6 (F) shows a state in which the transfer needle set 27 receiving the knitting yarn is rotated counterclockwise to complete the transfer of the knitting yarn.

7 shows that the knitting yarn 44 transferred to the transfer needle set 27 is transferred back to the knitting needle 44 'inside the nose, so that the knitting yarns 44 and 44' of the two noses are one. It shows the three stages of movement to the ratchet needle.

8 shows that after the knitting operation is completed, the carriage moves the width control device by one nose and the empty ratchet teeth transferred to the knitting yarn are completely retracted backward by the third push plate 34 to be in a resting state. Show that there is.

Fig. 9 shows examples of various types of deflection reduction. Fig. 9 (A) shows the case where the transfer needle set 27 has a single knitting loop to transition to an inner loop and the knitting width is reduced by one loop of knitting yarn.

Fig. 9B shows the case where the transfer needle set 27 has transitioned to the inner loop through two knitting loops, and the width of the knitting is reduced by one loop of knitting yarn.

FIG. 9C shows a case where the transfer needle set 27 has transitioned to the inner loop through two knitting loops, and the width of the knitting needle is reduced by two loops of knitting yarn.

Fig. 9D shows the case where the transfer needle set 27 has set the knitting loop set to transition to the inner loop, so that the knitting width is reduced by 2 loops of knitting.

In this way, the number of loops to be transferred can be adjusted according to the use or design of the knitting, and this adjustment is made by adjusting the distance that the carriage travels.

The present invention can reduce the shoulder width of the knitted fabric by the structure and organic operation described above by the desired angle and by the desired number of noses. Since the width control is automatically performed according to the command input to the computer, the natural pattern can be produced according to the reduced number of noses or overlapping number of noses on the shoulder of the product which has high productivity and the width of the width decreases gradually. . In addition, since the shoulder portion of the knit is not cut and discarded, there is no economical loss of the knit.

Claims (6)

A feeder driver 20 mounted on both sides of a pair of carriages symmetrical to each other and configured as a means for forwarding and reversing the feeder unit, a sensing unit for detecting backward of the feeder unit, and a control unit for receiving information of the sensing unit and instructing the entire operation; Feeder unit 10 consisting of a transition means for transferring the knitting yarn in a rotational motion, a retraction operation means for moving the ratchet forward and backward, a means for raising and lowering one of the retraction operation means, and a detection blocking means selectively engaged with the feeder driver. Automatic flat width control device of the flat knitting machine, characterized in that consisting of. The method of claim 1, Automatic width control device of the flat knitting machine equipped with a carriage that is equipped with a feeder drive unit 10 and the feeder unit 20, the automatic width control device on the left and right, and the amplitude is gradually reduced in accordance with the input command. The method of claim 1, The means for advancing and reversing the feeder part is composed of an eccentric rotating arm 14 which is pivoted by the stepping motor 12, a sliding roller which is coupled to the end of the eccentric rotating arm and is held by the slider 22 to move up and down. Automatic width control device for knitting machines. The method of claim 1, Transfer needle set 27, which is a transition means of knitting yarns, is a needle nose of a size that can be rotated forward and backward at a predetermined angle by a stepping motor 24, and several needles are arranged horizontally, and the heads of the ratchet teeth can be fully exposed Automatic flat width control device of the flat knitting machine, characterized in that the structure is bent at an angle of 90 ° to 120 °. The method of claim 1, The latching means of the ratchet teeth is composed of two fixed push plates 32 and 34 and one push-out push plate 33 at regular intervals on the bottom of the feeder part, and the first and second push plates 32 and 33. ) Is on the same course, and the third push plate (34) is an automatic flat width control device of the flat knitting machine, characterized in that installed on the outside of the course. The method of claim 1, The sensing and sensing blocking means includes a first optical sensor 13 engaged with the optical sensor blocking plate 21 of the feeder unit when the feeder unit 20 retracts, and an optical sensor that is pivoted by the stepping motor 24 of the feeder unit. Automatic flat width control device of the flat knitting machine, characterized in that it consists of a second optical sensor (28) interlocked with the blocking plate (29).

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