JPH01207448A - Electromagnetic needle selector in circular knitting machine - Google Patents

Abstract

PURPOSE:To move knitting needles to the respective positions of knit/tuck/welt by a simple mechanism, by respectively providing electromagnets contacting and separating from the lower ends of select lever at the first and second needle selecting positions. CONSTITUTION:A knitting needle 3, a spring jack 12 and a select lever 15 are inserted into each needle groove of a cylinder 1 and the lower end of the select lever 15 is brought into contact with and separated from electromagnets 25 and 26 to engage and disengage a pad (12d) of the spring jack 12 from a cam 13. When the cylinder 1 is rotated and the knitting needle 3, etc., are at the first needle selecting position 30, the knitting needle 3 is moved to the tuck position by the cam 13 in the electrical conduction state of the first electromagnet 25 and remains at the welt position in the electrical nonconductive state. When the knitting needle, etc., reach the second needle selecting position 31, the knitting needle 3 is moved to the knitting position in the electrical conductive state of the second electromagnet 26 and remains at the welt position in the electrical nonconductive state.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electromagnetic needle selection device for a circular knitting machine, and in particular, the present invention relates to an electromagnetic needle selection device for a circular knitting machine, and in particular, to set knitting needles in three positions according to the knitting pattern at a large number of knitting locations. It is equipped with a spring jack and a select lever with elasticity placed below the knitting needles to reach the knitting position of the knitting needle (welt, welt), and a control magnet that can be energized at three locations for one yarn feeder depending on the knitting pattern. The present invention relates to an electromagnetic needle selection device for a circular knitting machine in which the select lever is controlled and a spring jack raises the knitting needles or moves them away from each position (welt, tuck position) in accordance with the movement of the select lever.

[Prior Art] Electromagnetic needle selection devices for circular knitting machines have been devised in the past that enable selection of knit and welt positions.

For example, as a needle selection device for this type of circular knitting machine, there is a configuration described in Japanese Patent Publication No. 42-20439.

In this conventionally configured needle selection device, protrusions are arranged directly below each knitting needle. Its vertical movement is performed by a cam, but it moves up and down only when the upper butt of the plunger is engaged with the cam, and when the upper butt is separated from the cam and is not engaged, the plunger moves upward. The knitting needles do not move and therefore do not push up the knitting needles.

Whether or not the upper butt of the lunger engages and disengages from the cam is determined by whether the spring bar operated by the control magnet does not press the lower butt of the lunger or presses it.

The lower butt projects upward from the outer periphery of the cylinder and is engaged with a number of spring bars.

A sorting cam is disposed at the lower end of the cam that acts on the thruster, and a guide cam is provided in front of the sorting cam.

The control magnet is disposed below the cam that acts on the protruder, and the spring bar that corresponds to the sorting cam rides on the slope of the guide cam, approaches the control magnet, and is displaced outward, so that it touches the magnetic pole surface of the control magnet. approach. At this time, when the control magnet is in a non-energized state, the spring rod passes outside the guard cam, but when it is energized, the spring rod passes inside the selection cam through a branched guide path due to its own elasticity. Therefore, when the control magnet is in a non-energized state, the spring bar does not act on the lower butt of the darter, so the upper butt of the darter engages the cam and moves up and down to push up the knitting needle.

When the control magnet is energized, the spring bar passes inside the selection cam, so the lower butt of the protruder is pushed inward by the spring bar, and the protruder moves counterclockwise around the lower end of the leaf spring or wire. As it moves against the spring, the upper butt of the plunger comes off the cam and no longer engages with the cam, so the plunger does not move up and down, and therefore the knitting needles do not rise either.

[Problems to be solved by the invention] In this technique, five tuck and welt positions are selected, but when selecting three positions, knit, tuck, and welt, two yarn feeders are used. The distance between the yarn feeders must be knitted.

Due to the selection of tuck and welt, it becomes longer.

Incidentally, in order to increase productivity, it is necessary to increase the number of yarn feeders, and for this purpose, the distance between the yarn feeders must be shortened, but it is difficult to sufficiently meet this request with the above-mentioned conventional technology.

In addition, in the above conventional technology, since the repulsive force of the leaf spring of the lunge and the mass of the lunge are applied to the spring bar, it is necessary to increase the elastic force of the spring bar accordingly, and as a result, the elastic force of the strengthened spring bar Since 100% of the force must be held by magnetic force, a control magnet with a large magnetic force was required.

The present invention was made to solve these problems, and its purpose is to provide a circular knitting machine in which three positions, knit, tuck, and welt, can be selected for one yarn feeder using a relatively simple device. The purpose of the present invention is to provide an electromagnetic needle selection device.

[Means for Solving the Problems] The electromagnetic needle selection device of the present invention includes knitting needles that are arranged in a cylinder groove and are slidable in the axial direction, and each of the knitting needles has elasticity that is movable in the axial direction. A spring jack is provided, the lower end of the spring jack is removable from a corresponding cam, and the lower end of the spring jack is supported so as to be able to engage with the spring jack and pivot in a radial direction;
An electromagnetic needle selection device having a select lever whose lower end is selectively actuated to select a welt that causes the lower end of the spring jack to escape from the cam or to engage the lower end of the spring jack with the cam. and a second needle selection means that engages and disengages the lower end of the spring jack from a cam to select the latter tuck/knit. Said 1st. When the second needle selection means is energized, one arm of the select lever can be attached and detached from the control magnetic pole surface by or against the repulsive force of the elastic force of the spring jack.

Preferably, the first and second needle selection position means include magnets capable of attracting the arm of the select lever.

Preferably, this magnet is composed of a combination of a control electromagnet section and a holding permanent magnet section, and the control electromagnet section further has a control permanent magnet piece, and when the control electromagnet section is energized, the magnetic force of the control permanent magnet piece is excited. Or it is like being demagnetized.

According to one embodiment (first embodiment), one arm of the select lever is formed longer than the other arm to amplify the force of one arm of the select lever that engages with the spring jack. As a result, the positive element of the other arm is held by the relatively small magnetic force of the control magnet.

Preferably, the arm length ratio of the select lever is 1:1.5 to 1:4, more preferably 1:1.5 to 1:4.
:2 to l:3.

According to another embodiment (second embodiment), a U-shaped portion is provided at the upper end of the upper arm of the select lever to sandwich both side edges of the hanging extension of the spring jack, and the outside of this U-shaped portion is provided. The edge is provided with an armature which is held by a control magnet.

[Function] According to the present invention, a spring jack and a select bar are combined, and when electricity is applied, the repulsive force of the spring jack outwards (in the case of the first embodiment) or inward (in the case of the second embodiment). As a result, the select lever arm instantly separates from the magnetic pole surface.

Further, according to the first embodiment, by adjusting the length ratio of the upper and lower arms of the select lever, one arm of the select lever is held with a relatively small magnetic force.

As a result, compared to the conventional device that uses magnetic force to hold 6100% of the elastic force of the spring bar, the present invention can shorten the distance within the selection position, and can handle knits, tucks, and welts with one yarn feeder. It becomes possible to select three positions, and the number of yarn feeders can be increased.

Hereinafter, the actual implementation of the present invention will be explained based on the attached drawings! An example will be explained.

[Embodiment IIA] FIG. 1 is a longitudinal cross-sectional view showing the main parts of the knitting section according to the first embodiment of the present invention, and FIG. 2 is a cam arrangement diagram seen from the inside of the cylinder.

In FIG. 1, reference numeral (1) indicates a cylinder, and a large number of circular needle grooves (2) extending in the axial direction are formed on the outer periphery of the cylinder (1).

At the top of each needle groove (2) are vertically slidable knitting needles (3).
) are accommodated. Each knitting needle (3) is connected to the actuating butt (3).
It has a).

A cam holder (4) facing the cylinder (1) is fixed on the upper cam ring (5).

This cam holder (4) is provided with a stitch cam (6) that controls or operates the knitting needles (3).

The sinkers (7), which cooperate with the knitting needles (3) during knitting, are radially slidable on horizontally arranged sinker dials (8). The sinker (7) is controlled by a sinker cam (10) attached to a sinker cap (9). The sinker cap (9) is housed within the cap ring (11).

A spring jack (12) having inherent elasticity is placed directly below the knitting needle (3). This spring jack (12) has a shoulder part (12a), an upright front edge part (12b
), a stem (12c), a raised rose 1-(12d), a lowered butt (12e), and a hanging extension (12f).

The shoulder part (12a) comes into contact with the bottom of the knitting needle (3) and the knitting needle (3)
) to push up. The upright front edge (12b) constantly presses the back of the knitting needle (3) outward due to the elastic force of the spring jack (12).

The stem (12c) is a relatively thin elastic body that can automatically return to its original position when the lower end of the spring jack (12) is pushed into the inward position.

In addition, the selection cam (13) and spring jack (12) with which the raised butt (12d) engages and disengages.
A jack lowering cam (14) that lowers the jack is fixed on the cam holder (4).

A select lever (15) is housed in the bottom cylinder groove corresponding to the spring jack (12).
It is. The select lever (15) is equipped with an annular coil spring (1
Four parts (15a) are formed that can swing in the radial direction of the cylinder shaft within a limited range using 5) as a fulcrum.

A bulge (15f) is formed on the opposite side of the recess (15a).

At the tip of the upper arm (15b) of the select bar (15) is a hanging extension (12) of a spring jack (12).
A semicircular portion (15c) is formed to press the outer edge of f), and the lower arm (15d) has an armature (15e) held by a control magnet (18) to be described later.
It is equipped with The lever ratio of the upper arm (15b) and lower arm (15d) of this select bar (15) is approximately 1.
=1°5 to 1:4 is particularly preferred, and 1:4 is particularly preferred.
:2 to 1:3.

Below the selection cam (13), when the hanging extension (12f) of the spring jack (12), which is in pressure contact with the upper arm (15d) of the selection lever (15), is pushed into the inward position, the selection cam (13) ) to spring jack (
A canceling cam (17) for disengaging the raised butt (12d) of 12) is provided in the upper cam ring (5).

As shown in Fig. 3, the operating surface of the canceling cam (17) has an approximately 45-degree slope toward the inside of the cylinder (
17a) and a straight portion (17b) are formed.

As will be described in detail later, when the control electromagnet part of the control magnet is in a non-energized state, the select lever (15) that has moved from the A position is moved to the straight part (17b) at the B position by the inclined part (17a). Maintain that position. Also, when the control electromagnet section is energized, the select lever (15
) immediately after passing through the straight portion (17b), the spring jack (12) is returned from position B to position A by its own elasticity.

Returning to FIG. 1, there is a drive gear (19) integrally attached to the lower part of the cylinder (1), which when driven from a drive source normally located in the machine,
Rotates at the same speed as the cylinder.

Reference numeral (20) indicates a base, and a lower cam ring (21) is accommodated in this base (20). There are 4 to 6 lower sabots (22) arranged at equal intervals on the lower cam ring (21).
) on which the upper cam ring (6) is fixed.

On the upper cam ring (5) there are also equally spaced upper supports (23).

A control magnet (18) is arranged on this lower cam ring (21) and is held by a support (24).

As clearly shown in FIGS. 4 and 5, this control magnet (18) mainly consists of two sets of control electromagnet parts (25° 26b, 26
) and a set of permanent holding magnets (27), which are arranged around the rotating cylinder. The reprint magnets (25, 26) are arranged horizontally and offset from each other.

As shown in FIG. 5, this holding permanent magnet part (27) consists of a pair of magnetic bodies (27a, 27b) made of iron plates, etc.
One permanent magnet (27c) is sandwiched and fixed at the base end of the two magnetic bodies (27a, 27b), which face each other in the vertical direction to form a magnetic closed circuit.

At the tips of both the magnetic pairs (27a, 27b), there are two in the first control electromagnet part (25) and the second control electromagnet part (26).
control permanent magnet pieces (25a.

25b), (26a, 26b) are inserted into the notch (27
d, 27e, 27f, 27g) are formed. At the tips of both magnetic bodies (27a, 27b), magnetic pole faces (27h, 27j) whose planes are substantially arcuate are formed. and both magnetic materials (27a).

27b) notches (27d, 27e, 27f).

Two control permanent magnet pieces (25g) inserted into the
Control coils (25c, 26c) are wound around the vertical parts of a, 25b) and (26a, 26b), respectively. Their control coils (25c.

26c) is connected to a current source (not shown) which provides a pulse signal of energization or de-energization according to a pre-recorded knitting program as appropriate.

When energized, the magnetic field of the control coils (25c, 26c) is applied to the control permanent magnet pieces (25a, 25b), (26a, 26b).
) in the opposite direction to the magnetic field of reprint 13II permanent magnet piece (2
5a, 25b), (26a.

26b) is demagnetized.

When the power is off, the permanent magnet piece (25a) will be reprinted.

25b), (26a, 26b, 26b) are magnetically balanced so that a constant magnetic force acts on each magnetic pole surface.

1st. The second control electromagnet part (25, 26) and the holding permanent magnet part (27) are made of a housing (2
8) and covered with a cover (29) or the like.

As shown in FIG. 2, the control magnet (18) having the above-mentioned configuration has a first needle selection position (30) and a second needle selection position 11 (31).
When a pulse signal is input in , the operation is as follows.

In Figures 2 and 3, when the rotary cylinder (1) rotates in the opposite direction, the inclined portion (17a) of the canceling cam (7) moves all the select levers (1
The upper arm (15b) of the spring jack (1
2) is pushed into the cylinder against the elastic force.

As a result, the armature (15e) of the lower arm (15d) is held by the magnetic pole surface (27h) by the holding permanent magnet part (27) which is stronger than the elastic force of the spring jack (12).
, 27j). This condition can be seen in FIG.

Therefore, the spring jack (12) has a raised rose 1-(1
2d) moves to the first needle selection position (30) in a state in which it is disengaged from the selection cam (13).

The seventh lever (15) is the canceling cam (17)
Immediately after passing the straight line part (17b), the first needle selection position (30)
When the first control electromagnet section (25) is in the energized state, the armature (15e) is connected to the control permanent magnet piece (25a) as described above.

25b). As a result, as shown in Fig. 7, the raised butt (1) of the spring jack (12)
2d) enters the cam race (13A) (see Figure 2) and begins to rise along the upward slope (13a).

In addition, when the power is not turned on, the select lever (15
The armature (15e) of the control permanent magnet pieces (25a, 25
Since it moves laterally while remaining in the state held in b),
The raised butt (12d) of the spring jack (12) passes over the entire surface of the cam while remaining separated from the inside of the cam race (13A). Therefore, the knitting needles (3) do not rise, but remain in the welt position, and move to the next first needle selection position (30).

The spring jack (12) that has started to rise at the first needle selection position (30) has the armature (15e) of its select lever (15) on the magnetic pole surface (27h).

27j), the selection cam (13) reaches a horizontal position (131) along the upward slope (13a). (See Fig. 2) Then, as shown in Fig. 8, the upper arm (15d) of the select lever (15) is connected to the spring jack (12) by the inclined portion (17a) of another corresponding canceling cam (17). The needle is pushed into the cylinder against the elastic force of the needle and moves to the second needle selection position (31).

As shown in FIG. 9, the select lever (15) moves the second control electromagnet (26) at the second needle selection position (31) immediately after passing the straight part (17b) of the canceling cam (17).
) is in the energized state, the armature (15e) instantly separates from the control permanent magnet pieces (26a + 26b).

This will raise the spring jack (12))
(12d) enters the cam race (13B) again, rises along the upward slope (13C), and reaches the highest position.

The knitting needle (3) also rises and reaches the highest knitting position.

(See Figure 1O) After that, the spring jack (12) is lowered into the lower butt (1
2e) is the downwardly inclined part (14) of the jack lowering cam (14).
a) leads to the bottom position.

Meanwhile, the knitting needle (3) is also lowered by the stitch cam (6) and guided to the welt position, and then moved to the next first needle selection position (30).
Move to.

In addition, when the power is not energized, the select lever (15)
are the magnetic pole faces (27h, 27j) of the holding permanent magnet part (17).
), the spring jack (12) will be moved laterally while being held in place (12).
2d) does not engage the raising slope (13b) of the raising cam (13), leaves the cam race (13B) and passes through the front face of that cam, and then the lowering slope of the lowering cam (14) of the spring jack (12). It is guided to the bottom position by the section (14a). On the other hand, the knitting needle (3) does not rise any further (tuck position) and is guided to the welt position by the stitch cam (6), and moves to the next first needle selection position (30).

The second embodiment of the present application will be described with reference to FIGS. 11 to 19.

The equipment used for this is almost the same as that of the first embodiment. The second embodiment differs from the first embodiment in the direction of repulsion of the elastic force of the spring jack (opposite to the first embodiment), the shape of the select lever, and the configuration and arrangement of the canceling cam and control magnet. be.

In FIG. 11, a select lever (150) is accommodated in the bottom cylinder groove corresponding to the spring jack (120).

This selection bar (150) is an annular coil spring (15
) is a fulcrum and is provided with a recess (150a) that can swing in the radial direction of the cylinder shaft within a limited range.

The front part of this recess (150a) has a fan-shaped part (150g), and the opposite side of the recess (150a) has a bulge part (150g).
50f) is formed.

At the upper end of the upper arm (150b) of the select lever (150), there is a U-shaped part (150c) that holds both side edges of the hanging extension part (120f) of the spring jack (120).
), and a control magnet (180) (see FIGS. 13 and 14), which will be described later, is located at the outer edge of this U-shaped portion (150c).
It is equipped with an armature (150e) held by.

The lower arm (150d) is adapted to be forced into an inward position by the channel (170).

Canceling cam (170a) as shown in Figure 12
The working surface of the cylinder is an inclined part (170
b), a straight line part (170C) is formed, and an arcuate regulating part (170d) for regulating the vertical movement of the fulcrum of the select lever (150) is formed above the straight part (170C).

In addition, the control magnet (180) and the channel-shaped part (17
0) is attached to the lower sabot) (240). (See FIG. 15) Returning to FIG. 12 again, as will be described in detail later, when the control electromagnet part of the control magnet (180) is in the energized state, the lower part of the select lever (150) that has moved from the B position The arm (150d) is returned to the outwardly inserted position and remains in that position by the spring jack (120)'s own elastic force.

The lower arm (150d) of the select lever (150) is moved from the outer A position to the inner B position by the elastic force of the spring jack (120) by the inclined part (170b) of the canceling cam (170). It is done while resisting.

The control magnet (180) is mainly composed of 2M control electromagnet sections (250, 26
0) and a set of permanent holding magnets (270), which are arranged around a rotating cylinder. The control electromagnets (250° 260) are arranged horizontally in parallel and offset from each other.

As shown in FIG. 14, this holding permanent magnet part (270) has one permanent magnet (2
70C) is clamped and fixed. Inner magnetic material (270
The tips of 270b) are close to each other in the vertical direction to form a magnetic closed circuit.

At the tips of the inner magnetic bodies (270a, 270b), a first
Control electromagnet section (250) and second control electromagnet section (260)
Two sets of control permanent magnet pieces (250a, 250b
), (260a + 260b) are inserted into cutouts (270d, 270e, 27Of, 270g).

At the tips of the inner magnetic bodies (270a, 270b), magnetic pole surfaces (270h, 270j) whose planes are substantially arcuate are formed.

Then, the cutout portions (27
Two sets of control permanent magnet pieces (250a, 250b), (2
60a, 260b) have control coils (250c, 250
d), (260c.

26b, 26Od) are wound respectively.

Their control coils (250c, 260d), (260
c, 260d) is connected to a current source (not shown) which provides a pulse signal of energization or de-energization according to a pre-recorded knitting program.

When energized, the control coils (250c, 250d), (
260c, 260d) are applied to both control permanent magnet pieces (25
0a, 2! l>Ob), (260a.

260b) in the opposite direction to the magnetic field of the reissue bullet (250a).
, 250b), (260a, 260b) are demagnetized.

Both control permanent magnet pieces (250a, 250b) when not energized
, (260a, 260b) are magnetically balanced so that a constant magnetic force acts on each magnetic pole surface.

1st. The second control electromagnet section (250, 260) and the holding permanent magnet section (270) are housed in a housing (280) made of nonferrous metal or the like, and covered with a cover (290) or the like.

The control magnet ('180) having the above-mentioned configuration operates as follows when pulse signals are input at the first needle selection position (aOO) and the second needle selection position (310) as shown in FIG. Operate.

11 and 12, the rotating cylinder (1
) rotates in the opposite direction, the canceling cam (170
The lower arms (150d) of all the select levers (150) are pushed into the cylinder inner position by the inclined portion (170b) in a) while resisting the elastic force of the spring jack (120) itself. As a result, the upper arm (15
0b) armature (150e) is a spring jack (
12) The holding permanent magnet part (which is stronger than the elastic force of
270) is securely held on the magnetic pole faces (270h, 270j). This state can be seen in FIG.

The select lever (150) is connected to the canceling cam (17).
0a) when passing the end of the straight section (170C), the 1st! II
When the I'n electromagnet section (250) is in the energized state, the first
As shown in Figure 5, the armature (150e) is moved by the control pieces (250a, 2
50b).

As a result, the jack lifting butt (120d) of the spring jack (120) is moved to the cam race (13A) (first
(see Figure 1) and pass through the front of the cam while maintaining that state.

On the other hand, the knitting needle (3) also does not rise and is in the welt position, and moves to the next first needle selection position (300).

In addition, when in the de-energized state, the armature (150e) of the select lever (150) moves against the control pieces (250a, 250b) while resisting the elastic force of the spring jack (120) from the state shown in FIG. The jack lifting butt (120) of the spring jack (120) is
120d) is the raised slope part (1) in the cam race (13A).
It begins to rise along 3a).

The spring jack (120) that has started to rise along the upward slope (13a) has its select lever (150)
The armature (150e) continues to be connected to the magnetic pole face (270h, 27
0j), the selection cam (130) reaches a horizontal position (13b) along the upward slope (13a);
Immediately thereafter, the needle is moved to the second needle selection position (310). (1st
1) At the second needle selection position (310), the select lever (150) moves the armature (15) when the second control electromagnet (260) is energized, as shown in FIG.
0e) is instantly separated from the control pieces (260a, 260b) by the elastic force of the spring jack (120). As a result, the raised bat of Spring Jack (120) (
120d) leaves the cam race (13B) of the raising slope part (13a) of the jack raising cam (13) and passes through the front surface of the cam while maintaining that state.

After that, Spring Jack (120) lowered the bat (
120e) is the downwardly inclined part (120e) of the jack lowering cam (14).
14a) leads to the bottom position. On the other hand, knitting needles (3
) does not rise any further (tuck position) and the stitch cam (6
) is guided to the welt position, and then moves to the next first needle selection position (
a OO).

Further, when in the non-energized state, the armature (150e) is in the control piece (260a) as shown in FIG.

260b). As a result, the jack raising rose (120d) of the spring jack (120) is
It is still inside the cam race (13B) and has a raised slope (
13c) and reaches the highest position.

Thereafter, the spring jack (120) is guided to the lowest position by the downward slope (14a) of the jack lowering cam (14).

On the other hand, the knitting needles (3) also rise as shown in Fig. 18 and reach the highest knitting position, after which they are guided to the welt position by the stitch cam (6) and then to the next first needle selection position (300 knitting positions).
).

[Effect] According to the present invention, the distance between the needle selection positions can be shortened by instantly separating the select lever from the magnetic pole surface by the repulsive force of the spring jack's elasticity.

Further, in the first embodiment of the present application, by adjusting the ratio of the arm lengths of the select lever, it is possible to hold the select bar with a relatively small magnetic force.

Therefore, needle selection in three positions of knit, tuck, and welt is possible with one yarn feeder, and a large number of yarn feeders can be provided.

[Brief explanation of the drawing]

1 to 10 show the first embodiment of the present application,
Figure 1 is a longitudinal sectional view showing the main parts of the knitting section, Figure 2 is a developed view of the cam holder equipped with the knitting needle, select lever, and spring jack cam, seen from inside the cylinder, and Figure 3 is the canceling ring. Top view of the cam, Figures 4 and 5
The figure shows a control magnet, Figure 4 is a partially cutaway plan view, Figure 5 is a vertical sectional view, and Figures 6 to 10 show the main parts of the knitting section to explain the operation. FIG. Figures 11 to 19 show the second embodiment of the present application, in which Figure 11 is a developed view of a cam holder equipped with a knitting needle, a select lever, and a spring jack cam, seen from inside the cylinder, and Figure 12 is a The plan view of the canceling cam, FIGS. 13 and 14, are the control magnets, FIG. 13 is a partially cutaway plan view, FIG. 14 is also a partially cutaway vertical sectional view, and FIGS. FIG. 19 is a longitudinal sectional view showing the main parts of the knitting section for explaining the operation. 3151 knitting needle 12.120. ,,spring jack 120f,,spring jack hanging extension 13,,,cam 15.150. , select lever 15e, select lever armature 150b, select lever upper arm 150c,
, U-shaped portion 150e of the select lever, , armature 18.180 of the select lever. ,,control magnet 25.26:250,260. ,,control magnet section 27.2
70. ,, Holding permanent magnet parts 25a, 25b, 26a, 26b: 250a. 250b, 260a, 260b... Control permanent magnet piece Patent applicant Fukuhara Seiki Co., Ltd. Figure 1 Figure 2 Figure 30 31 3 (J Figure 3 Figure 4 Figure 5 Figure 7 Figure 6 Figure 9 Figure 8 Figure 10 Figure 11 Figure 12 Figure #g13 Figure 1414 Figure 15 Prisoner Figure 15

Claims (1)

[Claims] 1. An axially slidable knitting needle (3) arranged in a cylinder groove, each of which has an axially movable elastic spring jack (12, 120
), the lower end of this spring jack can be engaged with and detached from the corresponding cam (13), and the lower end of the spring jack is supported so that it can engage with the spring jack (12, 120) and pivot in the radial direction. and a select lever (15, 150) whose lower end is selectively activated, the lower end of the spring jack (12, 120) being released from the cam (13). a first needle selection means for selecting a welt or for selecting a transition to tuck/knit in advance by engaging the lower end of the spring jack (12, 120) with a cam (13); , 120) for engaging and disengaging the lower end of the cam (13) to select the latter tuck/knit, and when the first and second needle selection means are energized,
The select lever (15, 15) is activated by or against the repulsive force of the elastic force of the spring jack (12, 120).
An electromagnetic needle selection device for a circular knitting machine, characterized in that one arm of item 0) is detachable from a control magnetic pole surface. 2. The electromagnetic needle selection device according to claim 1, wherein the first and second needle selection means include control magnets (18, 180) capable of attracting the arm of the select lever. 3. The control magnet (18, 180) has a control electromagnet section (
The control electromagnet section further includes control permanent magnet pieces (25a, 26b, 26a, 26b:
250a, 250b, 260a, 260b), and the magnetic force of the control permanent magnet piece is excited or demagnetized when the control electromagnet section is energized. 4. One arm (15) of the select lever (15)
d) is formed longer than the other arm (15b), and the select lever (15b) engages with the spring jack (12).
15), the armature (15e) of the other arm is held by a relatively small magnetic force of the control magnet (18). The electromagnetic needle selection device according to any one of Item 3. 5. Both arms of the select lever (15b, 15d)
5. The electromagnetic needle selection device according to claim 4, wherein the length ratio of is from 1:1.5 to 1:4. 6. Upper arm (150b) of select lever (150)
) at the upper end of the spring jack (120), a U-shaped part (150
c) and an armature (150e) held by a control magnet (180) at the outer edge of this U-shaped part (150c). The electromagnetic needle selection device described in .