KR101289984B1 - Needle bed structure for flat knitting machines - Google Patents

Abstract

Needle bed devices for flat knitting machines located on both sides of the needle bed gap, a plurality of parallel needle plate, a plurality of knitting needles and sinkers disposed between the needle plates, the sinker control which can move in parallel to the direction in which the sinker is disposed And at least one control cam driven by the switch portion during the switch movement to press the sinker to rotate towards the needle bed gap. The switch unit performs a switch movement in accordance with the direction of movement. The present invention includes one or more needle press boards that limit the vertical movement of knitted needles thereon. The switch portion includes a magnetic force portion capable of applying magnetic force with a corresponding needle press board. Spacers are provided between the needle plates to prevent horizontal movement of the sinker.

Description

Needle bed device for flat knitting machine {NEEDLE BED STRUCTURE FOR FLAT KNITTING MACHINES}

The present invention relates to flat knitting machines, and more particularly, to a needle bed device for flat knitting machines.

In a conventional flat knitting machine, a sinker between knitting needles is used to control a thread penetrating through the knitting needle in a loop release process, a loop connection process, a loop escape process, and a loop forming process. The sinker has a protruding edge on one side that corresponds to the knitted needle. As the sinker rotates, the protruding edge presses on the yarn picked up by the knitted needle, thereby forming a pattern on the surface of the knitted fabric.

In order to stabilize the rotation of the sinker, a sinker bed is provided in the needle bed. For example, EP 1,522,618 and EP 1,522,617 disclose sinker beds mounted to a needle bed via a connection seat. The sinker bed has valleys corresponding to each sinker to limit the movement of the sinker without tilting. The sinker bed also has a control as disclosed in US Pat. No. 5,475,990 for controlling the rotation of the sinker. In general, the sinker control unit includes a first cam and a second cam disposed adjacent to each other. The first cam and the second cam are locked on the base by a connecting movement device so that the sinker bed is formed to be movable in the horizontal direction. The linked movement device has one or more magnets for applying magnetic force to the sinker bed. When the sinker control moves horizontally with respect to the sinker bed, the horizontal movement determines whether the first cam and the second cam press the sinker on the first cam and the second cam, and then change the rotation angle. To form seal loops of different sizes.

Indeed, it is determined whether the sinker can accurately perform the rotational movement depending on whether the sinker control moves constantly and horizontally with respect to the sinker bed. If the surface of the sinker bed is rough, the sinker control moves unsmoothly and the rotational control of the sinker is incomplete. Thus, the sinker bed is generally formed of steel bars having substantially the same length as the needle bed. One side of the sinker bed corresponding to the sinker control unit is formed to have a very smooth surface. As a result, the price of the product becomes expensive for accurate weaving.

The main object of the present invention is to solve the problems of conventional flat knitting machines with sinker beds which are expensive to weave.

In order to achieve the above object, the present invention provides a needle bed device for flat knitting machine disposed on both sides of the needle bed gap. The needle bed device includes a plurality of parallel needle plates, a plurality of parallel knitted needles and sinkers disposed between the needle plates, and a sinker control member capable of moving in parallel with the direction in which the sinkers are disposed. The sinker control portion includes a switch portion for performing a switch movement in accordance with a movement direction and one or more control cams driven by the switch portion for pressing the sinker to rotate the sinker toward the needle bed gap during the switch movement. The needle plates also include one or more needle press boards that limit the vertical movement of the knitted needle thereon. The switch portion includes a magnetic force portion capable of applying magnetic force with a corresponding needle press board. Spacers are provided between the needle plates to prevent horizontal movement of the sinker.

In one embodiment, the needle plate has a dovetail groove for holding the needle press board.

In one embodiment, the spacer and the knitted needle are disposed vertically between the needle plate and the sinker.

In one embodiment, the seal guide plate is provided between the knitted needle and the sinker.

In one embodiment the sinker has an anchor portion pivotally connected to a rotating shaft parallel to the direction in which the sinker is disposed.

In one embodiment, the needle plate has two openings through which the first holding line and the second holding line respectively pass.

In one embodiment, the spacer includes a first hole through which the first holding line passes and a first positioning notch through and passing through the second holding line. The first hole is a slotted hole. The first positioning notch has a first retreated recess.

In one embodiment the seal guide plate comprises a second hole through which a first holding line passes and a second positioning notch through and passing through the second holding line. The second hole is a slot hole. The second positioning notch is a second retracted recess.

In one embodiment the seal guide plate includes a holding portion for holding the knitted needle.

The needle bed device of the present invention has the following advantages.

1. Spacers may be provided between the needle press board and the needle plates above the needle plates to stabilize the rotational motion of the conventional sinker and replace the conventional sinker bed switching the sinker control.

2. By omitting the sinker bed, the manufacturing cost of the flat knitting machine can be reduced.

In addition to the additional object, the above features and advantages of the present invention will become more apparent from the following detailed description with reference to the accompanying drawings.

1 is a cross-sectional view of a flat knitting machine according to the present invention.
2 is a partial cross-sectional view of the needle bed device for flat knitting machine according to an embodiment of the present invention.
3 is a partial perspective view of a needle bed device for flat knitting machine according to an embodiment of the present invention.
4 is a partial exploded view of a needle bed device according to an embodiment of the present invention.
5 is a partially enlarged view of a needle bed device of a flat knitting machine according to an embodiment of the present invention.
6 is a front view of the needle bed device of the flat knitting machine according to an embodiment of the present invention.
7 is a plan view of the needle bed device of the flat knitting machine according to an embodiment of the present invention.

It is an object of the present invention to provide a needle bed device for flat knitting machines. Referring to FIG. 1, the flat knitting machine 10 of the present invention is applied to include two needle beds 20 facing each other on both sides of a mountain-shaped needle bed gap 11. Each needle bed 20 has a carrier 30 that is movable horizontally relative to the needle bed 20. The carrier 30 has a sinker controller 31 located at a position corresponding to the needle bed 20.

 2, 3 and 4, the needle bed 20 on each side has a plurality of parallel ditches 21 each holding a needle plate 22. Needle valleys 23 are formed between two neighboring needle plates 22. The needle trough 23 holds a knitted needle 24, a sinker 25, a spacer 26 and a seal guide plate 27. The knitted needle 24 may move back and forth longitudinally in the needle valleys 23 and may move toward the needle bed gap 11 to pick up the yarn. The sinker 25 includes a downward press boss 251, a control boss 252 and an anchor 253. The sinker 25 is pivotally connected to the rotary shaft 41 via the anchor portion 253. The rotating shaft 41 is held in a groove 201 formed in the needle bed 20 in parallel with the direction in which the sinker 25 is located. The sinker control unit 31 includes a switch unit 311 located in the carrier 30 and one or more control cams 312 driven by the switch unit 311. The control boss 252 is held in the control cam 312. The control cam 312 may be driven by the switch portion 311 and may be moved toward the needle bed gap 11 so that the sinkers 25 rotate.

The present invention also results in that the needle plates 22 are provided with one or more needle press boards 28 to limit the vertical movement of the knitted needle 24 such that the needles are held in the needle valleys 23. The needle press board 28 may be composed of a plurality of segments connected together. The needle plate 22 has a dovetail groove 221 for stably retaining the needle press board 28. In the present invention, the switch portion 311 includes a magnetic force portion 313 for applying a magnetic force between the corresponding needle press board 28. Since the magnetic force part 313 and the needle press board 28 are attracted to each other in a normal state by magnetic force, when the sinker control part 31 is driven by the carrier 30 and moves horizontally with respect to the needle bed 20, The switch unit 311 determines whether to press the sinker 25 so that the control cam 312 rotates toward the needle bed gap 11 according to the moving direction of the sinker controller 31.

4, 6, and 7, the needle valleys 23 between the two needle plates 22 are knitted needles 24, sinkers 25, spacers 26, and seal guide plates 27. Holds. The seal guide plate 27 has a holding portion 222 for holding the knitted needle 24. The sinker 25 is located between the needle plate 22 and the knitted needle 24. The seal guide plate 27 is located between the sinker 25 and the knitted needle 24. The sinker 25 and seal guide plate 27 are positioned higher than the knitted needle 24. The spacer 26 is located between the seal guide plate 27 and the needle plate 22 to prevent horizontal movement of the sinker 25 when the sinker rotates toward the needle bed gap 11. The spacer 26 is formed to the same thickness as the knitted needle 24, and the spacer and the knitted needle are arranged side by side vertically. Accordingly, the upper portion of the sinker 25 can move only between the spacer 26 and the needle plate 22 and is formed to rotate stably therebetween.

As shown in FIGS. 4 and 5, the needle plate 22 has two openings 223 through which the first holding line 42 and the second holding line 43 pass, respectively. The needle plate 22 can be firmly held in a continuous row and can be fixedly placed in the needle bed 20. To maintain the spacer 26 and the seal guide plate 27 in the desired position of the needle valley 23, to stably maintain the movement of the knitting needle 24 and the sinker 25 during the knitting process of the flat knitting machine 10 To this end, the spacer 26 and the seal guide plate 27 each have holes 261 and 271 through which the first holding line 42 passes, and holding notches through which the second holding line 42 passes. 262, 272). The holding notches 262, 272 have retreated recesses 263, 273 for holding the second holding line 43, respectively. In addition, in order to prevent a tolerance from being formed in the holes 261 and 271 which cause the first holding line 42 to penetrate smoothly while assembling the spacer 26 or the seal guide plate 27. The holes 261 and 271 may be formed with slotted holes having a vertical or horizontal clearance with respect to the needle valleys 23.

As a result, the needle bed device of the present invention is provided with a spacer between the needle press board and the needle plates on the needle plate so that it can replace the sinker bed adopted for the stable rotation of the sinker and the switching of the sinker control in the prior art. A connection seat connecting the sinker bed and the needle plate may also be omitted. Therefore, the manufacturing cost of the flat knitting machine can be reduced. According to the present invention there are obvious improvements over the prior art.

Although described above with reference to the embodiments, those skilled in the art can be variously modified and changed within the scope of the present invention without departing from the spirit and scope of the invention described in the claims below. I can understand.

Claims (15)

A needle bed device for flat knitting machines disposed on both sides of a needle bed gap,
A plurality of needle plates each parallel to each other,
A plurality of parallel knitted needles and sinkers disposed between the needle plates,
A sinker control unit which can move in parallel with the direction in which the sinker is disposed, and which has a switch unit which performs a switch movement in accordance with the movement direction;
One or more control cams driven by a switch portion pressing the sinker such that the sinker rotates toward the needle bed gap during the switch movement;
The needle plates hold one or more needle press boards on them to limit the vertical movement of the knitted needle, the switch portion comprising a magnetic force capable of applying magnetic force with a corresponding needle press board, wherein the needle Needle bed device, characterized in that the spacer is inserted in the plates to limit the horizontal movement of the sinker. The method of claim 1,
And said needle plate comprises a dovetail groove for holding said needle press board. The method of claim 1,
And the needle press board comprises a plurality of segments connected together. The method of claim 1,
And the spacer and the knitted needle are disposed vertically between the needle plate and the sinker. The method of claim 1,
Needle bed device, characterized in that the seal guide plate is inserted into the knitting needle and the sinker. The method of claim 1,
And the sinker comprises an anchor portion pivotally connected to a rotating shaft parallel to the direction in which the sinker is disposed. The method of claim 1,
And the needle plate includes two openings through which the first holding line and the second holding line pass. The method of claim 7, wherein
And the spacer comprises a first hole through which the first holding line passes and a first positioning notch through and passing through the second holding line. The method of claim 8,
Needle bed device, characterized in that the first hole is a slot hole. The method of claim 8,
And said first positioning notch comprises a first retracted recess. The method of claim 7, wherein
Needle bed device, characterized in that the seal guide plate is inserted into the knitting needle and the sinker. The method of claim 11,
And the seal guide plate includes a second hole through which the first holding line passes and a second positioning notch through and passing through the second holding line. 13. The method of claim 12,
Needle bed device, characterized in that the second hole is a slot hole. 13. The method of claim 12,
And said second positioning notch comprises a second retracted recess. The method of claim 11,
And the seal guide plate comprises a holding portion for holding the knitted needle.

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