JPH09111621A - Electromagnetic selector and knitting tool controller having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electromagnetic selector exhibiting a strong attractive force with a reduced electric power. SOLUTION: This electromagnetic selector is composed of swinging pieces having first and second parts to be attracted (5a, 5c) provided at right and left end parts and magnet members selectively attracting the first and second parts to be attracted to the swinging pieces. The magnet members are composed of a permanent magnet (20) and first and second electromagnets (13a, 13b) connected on both sides of the permanent magnet in series. The electromagnetic selector can be used as a knitting tool controller of a circular knitting machine. The knitting tool is, e.g. a sinker, a knitting needle (a latch needle, a complex needle), an intermediate part material (a jack, etc.) and a hook part material, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic selecting device which uses a permanent magnet and an electromagnet in combination and exerts a strong attraction force with low electric power, and a knitting tool control device having the same.

[0002]

2. Description of the Related Art In order to perform jacquard knitting in a circular knitting machine, it is necessary to select a needle, and for that purpose, it is necessary to switch a specific knitting needle to an active or inactive state. For this purpose, an electromagnetic needle selection device combining a permanent magnet and an electromagnet is widely used. For example, JP-A-6-20735
No. 2, JP-A-4-289250, Japanese Patent Publication No. 2-6077
7, U.S. Patent No. 62-299554, U.S. Pat.
No. 518845 and U.S. Pat. No. 3,283,541 are known. Also, US Pat. No. 3,518,845
In the device of No. 3,283,541, a plurality of control electromagnets are arranged to switch the knitting tool to the working or non-working position.

[0003]

In the former conventional apparatus using both the permanent magnet and the electromagnet, the magnetic force of the permanent magnet is demagnetized by the electromagnet to control the knitting tool. Therefore, it is not possible to generate a magnetic force stronger than the magnetic force of the permanent magnet, and it is necessary to increase both the permanent magnet and the electromagnet in order to obtain a sufficient attractive force. It was difficult to mount many.

In the latter conventional apparatus using a plurality of control electromagnets, a control unit for controlling the knitting tool to the working position and a control unit for controlling the knitting tool to the non-working position require separate control devices,
Therefore, there is a problem that the control device becomes large and the manufacturing cost becomes high.

Therefore, an object of the present invention is to provide an electromagnetic selection device which exhibits a strong attractive force with a small amount of electric power by using an electromagnet having a relatively small size and a sufficient attractive force.

[0006]

SUMMARY OF THE INVENTION An electromagnetic selection device of the present invention is a swing piece having first and second attracted portions provided at left and right end portions, and first and second attracted portions of the swing piece. And a permanent magnet.
It is characterized by comprising first and second electromagnets connected in series on both sides thereof. Preferably, the first and second attracted portions provided at the left and right end portions of the swing piece have downwardly inclined portions that extend outward, and the outer end portions of the permanent magnets have a mushroom-shaped cross section.

The present invention is also a control device for a jacquard knitted fabric in a circular knitting machine, in which a knitting tool is movably mounted, and is mounted in the same groove as the knitting tool, and swings to control the knitting tool. One base material, at least one rocking piece oscillatably supported by the rocking piece base material, and a magnet portion having at least a pair of attraction members corresponding to both ends of the rocking piece, respectively. A knitting tool control device in a circular knitting machine comprising at least one rocking piece lasing cam for raising the rocking piece, a control cam for controlling the knitting tool, and an intermediate cam for controlling the rocking piece base material, It is characterized in that the magnet portion is composed of a permanent magnet having first and second magnetic fields and first and second electromagnets connected in series on both sides thereof. The knitting tool is, for example, a sinker, a knitting needle (latch needle, compound needle), an intermediate member (jack, etc.), a hook member, or the like.

[0008]

According to the electromagnetic selection device of the present invention, when the first electromagnet attracts the first attracted portion, the second magnetic flux generated by the permanent magnet is interrupted by the second magnetic flux generated by the second electromagnet, and is interrupted. The second magnetic flux generated by the permanent magnet is the first magnetic flux generated by the permanent magnet and the first magnetic flux generated by the first electromagnet.
In addition to the magnetic flux, a stronger magnetic field is generated.

On the other hand, when the second electromagnet attracts the second attracted portion, the first magnetic flux by the permanent magnet is interrupted by the first magnetic flux generated by the first electromagnet, and the interrupted first magnetic flux by the permanent magnet is reduced by the first magnetic flux. In addition to the second magnetic flux generated by the permanent magnet and the second magnetic flux generated by the second electromagnet, a stronger magnetic field is generated.

According to the knitting tool control device of the present invention, the rocking piece sucked by the suction member based on the pattern information signal is engaged with the rocking piece lasing cam to pivotally support the rocking piece. Extrude with one base material. The rocking piece base material extrudes the intermediate member inserted into the sinker groove inside the rocking piece base material, and raises (forwards) the intermediate member. The butt of the intermediate member that has risen (advanced) engages with the intermediate member lasing cam, and the intermediate member further rises (advances). The intermediate member raises (advances) the knitting tool inserted into the sinker groove inside the intermediate member. The raised (advanced) knitting tool forms a jacquard knitted fabric.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, a single groove (not shown)
Among them, a thin plate-shaped rocking piece 5 is swingably fitted to the lower part of the thin plate-shaped rocking piece base material 4. The lower part of the swinging piece base material 4 is a semicircular recess 4e. From the upper end of the center of the rocking piece 5, a circular protrusion 5 is formed so as to correspond to the recess 4e.
e protrudes, and the recess 4e and the protrusion 5e are pivotally connected as a fulcrum. The left and right ends of the rocking piece 5 are bilaterally symmetric, and wedge portions 5c and 5d are formed on the upper side and suction portions 5a and 5b are formed on the lower side. A step is provided between the left and right suction parts 5a and 5b and the central lower end part.

The electromagnetic selection device of the present invention is fixedly provided to face the rocking piece 5. This device has a permanent magnet 20 at the center and first and second electromagnets 13a, 13
b is provided, and each position is fixed by a support member 21 disposed below. Each electromagnet has first and second exciting coils 131a and 131b located on both sides of the permanent magnet 20.
And the first and second cores 132a and 132b located inside and on the left and right ends of the exciting coil.
As shown in FIGS. 2 to 4, the first and second electromagnets 13 a, 13
b are arranged in series. First and second cores 132a, 13
It is preferable that the tip of 2b is an inclined portion that extends outward, because it enables a large swing. Also, as described below,
The outer tip of the permanent magnet preferably has a mushroom-shaped cross section.

By applying a positive voltage or a negative voltage to both ends of the wirings of the first and second electromagnets arranged in series, the first and second core portions 132a, 1a of these first and second electromagnets are provided.
32b selectively adsorbs the adsorption portions 5a and 5b of the rocking piece 5.

For example, as shown in FIG. 3, when a positive voltage is applied from A to B, the first magnetic field 20a by the permanent magnet 20 is generated.
Is interrupted by the magnetic flux generated by the first electromagnet 13a, and the first magnetic field 20 interrupted by the magnetic flux generated by the second electromagnet 13b is replaced by the second magnetic flux 20b generated by the permanent magnet 20.
a is added, and a stronger magnetic field is generated. At this time, the second core 132b of the second electromagnet 13b selectively attracts the attracting portion 5b of the swing piece 5.

Further, as shown in FIG. 4, when a negative voltage is applied from A to B, the second magnetic flux 20b generated by the permanent magnet 20 is blocked by the magnetic flux generated by the second electromagnet 13b, and the first magnetic flux generated by the permanent magnet 20 is reduced. The first electromagnet 1 is attached to the magnetic flux 20a.
3a and the second magnetic field 20b cut off
Is added, and a stronger magnetic field is generated. At this time, the first
The first core 132a of the electromagnet 13a is the attraction portion 5 of the swing piece 5.
a is selectively adsorbed.

The electromagnetic selection device of the present invention can be used, for example, as a sinker control device for a circular knitting machine.

5 to 11 are main parts of a sinker control device according to the first embodiment of the present invention. FIG. 5 is an arrangement diagram of a cam, a sinker 2, an intermediate member (intermediate jack) 3, a swing piece base material 4, and a swing piece 5, and operation lines 1L of the knitting needle 1 and the sinker 2, 2
L.

As shown in FIG. 6, a sinker dial 16 is fixed to the upper part of a rotary cylinder 15 of a circular knitting machine, and a sinker groove is provided in the upper part of the sinker dial 16 in the radial direction. It is set.

A yarn carrier 6 (see FIGS. 5 and 6-10) for supplying two types of knitting yarns, that is, a ground yarn GY and a pile yarn PY in pile knitting, is provided on the upper portion of the sinker 2. The yarn carrier 6 has a ground thread G
A ground thread supply port 6a for supplying Y and a pile thread supply port 6b for supplying the pile thread PY are fixed.

The sinker 2 includes a sinker dial 16
The inner sinker cam 7 and the outer sinker cam 8, which are attached to the sinker cap 17 corresponding to the above, slide in the sinker groove in the radial direction. Sinker 2
The vertical edges 2e and 2d are sandwiched between the side ends 7a and 7b of the inner sinker cam 7, and the butt 2
a is controlled by the cam track T2 (see FIG. 5).

In the sinker groove in the outer peripheral direction of the sinker 2,
An intermediate member 3 is set. The intermediate member 3 has at least one butt 3a, and a cam track T3 formed by the outer sinker cam 8 attached to the opposing sinker cap 17 and the first intermediate cam 10.
(See FIG. 5) along the radial direction in the sinker groove.

Intermediate member lasing cam 9 (see FIGS. 5 and 10)
) Controls the bat of the intermediate member 3 to the operative / non-operating position. When the intermediate member lasing cam 9 is in the operation position, the pile or the non-pile can be selected, and only the non-pile is in the non-operation position.

As shown most clearly in FIGS. 5 and 12, the electromagnetic selector according to the present invention is set in the sinker groove in the outer peripheral direction of the intermediate member 3. Swing single base material 4
Is at least one controlled by a cam track T4 formed by the first intermediate cam 10 and the second intermediate cam 11.
It has one bat 4a.

The attracting members 13a and 13b (see FIGS. 5 and 7) of the magnet portion are attached to the sinker cap 17 so as to face the swinging piece 5. Based on the signal output from the controller according to the predetermined pattern information set in advance,
These suction members 13a and 13b selectively suck the suctioned portions 5a and 5b of the swing piece 5. Before the swinging piece 5 enters the suction members 13a, 13b, the swinging piece canceling cam 14 (see FIG. 5) is used to swing the swinging piece 5 in a swingable state.
It is desirable that the inclined surfaces are aligned horizontally and then the swing piece 5 passes through the suction members 13a and 13b. It is also desirable to use a non-magnetic material for the cancel cam to reduce the leakage magnetic force from the permanent magnet.

When advancing the sinker 2, the suction member 1
A signal is sent from the controller to 3b and the attracted portion 5b of the rocking piece 5 corresponding to the attracting member 13b is attracted (see FIG. 7 <
FIG. 5 is a sectional view taken along line BB>). By this time, the ground yarn GY has been supplied from the ground yarn supply port 6a to the knitting needle 1 across the sinker top 2f of the sinker 2.

After the adsorbed portion 5b has passed the adsorbing member 13b, the wedge portion 5d of the swing piece 5 swings the swing piece lasing cam 1.
The rocking piece 5 is pushed out toward the center of the knitting machine together with the rocking piece base material 4 by engaging with the rising inclined portion 12a of the trapezoidal cross section of No. 2 (see FIG. 7A <C-C cross-sectional view>).

The front end 4b of the rocking piece base material 4 pushed out.
Pushes out the rear end 3b of the intermediate member 3. The butt 3a of the intermediate member 3 is formed by a rising slope 9 of the intermediate member lasing cam 9.
The intermediate member 3 is pushed out toward the center of the knitting machine by engaging with a (see FIG. 9A <D-D sectional view of FIG. 5>).

The front end 3c of the pushed out intermediate member 3 pushes out the rear end 2c of the sinker 2. When the intermediate member 3 reaches the apex 9b of the intermediate member lasing cam 9, the pushed intermediate member 3 advances the sinker 2 to a position where a pile loop can be knitted on the sinker nose 2b (Fig. 10A <E in FIG. 5). -See E cross section>). At this time, the pile yarn PY is supplied from the pile yarn supply port 6b to the knitting needle 1 across the sinker nose 2b of the sinker 2. FIG. 11 (FF cross section in FIG. 5) shows a state in which the pile loop PL is knitted on the sinker nose 2b by the advanced sinker 2.

The apex 9 of the intermediate member lasing cam 9
In b, it is preferable that the extruded tip of the nose 2b of the sinker 2 is set so as to move 0.3 mm or more inward from the circumferential operation line of the knitting needle. By setting in this way, a pile loop can be reliably formed at a position 0.3 mm or more away from the tip of the sinker nose 2b.

After the intermediate member 3 is pushed out by the rocking piece base material 4 to a position where the intermediate member 3 engages with the intermediate member lasing cam 9, the butt 4a of the rocking piece base material 4 moves down the inclined portion 10b of the first intermediate cam 10. And the rocking piece base material 4 is returned to the non-pile position together with the rocking piece 5.

In the above structure, the intermediate member 3 and the intermediate member control cam can be omitted. In this case, the rocking piece lasing cam 12 pushes the rocking piece 5 together with the rocking piece preform 4, and the rocking piece preform 4 directly pushes the sinker 2.

When the sinker 2 is not advanced, a signal is sent from the controller to the suction member 13a so that the suction member 13a
The sucked portion 5a of the swinging piece 5 corresponding to is sucked (see FIG. 7). Note that, in FIG. 7, it is not clear which of the attracted portions 5a and 5b is attracted to which of the suction members 13a and 13b due to the limitation in drawing.

The rocking piece 5 sucked by the suction member 13a is
The swinging piece 5 passes below the rising sloped portion 12a of the swinging piece lasing cam without engaging with the rising sloped portion 12a of the swinging piece lasing cam 12, and the swinging piece 5 and the swinging piece base material 4 -The intermediate member 3 moves in the circumferential direction without moving in the front-rear direction (see FIGS. 8B, 9B, and 10B). The sinker 2 is controlled only by the sinker cams 7 and 8 without engaging with the intermediate member 3. At this time, even if the pile yarn PY is supplied, the pile yarn PY is knitted on the sinker top 2f, so that the pile loop PL is not formed. The ground yarn GY is supplied together with the pile yarn PY to the knitting needle 1 across the sinker top 2f of the sinker 2 (see FIG. 10B <EE cross-sectional view of FIG. 5>).

As described above, by using the sinker control device of the present invention, it is possible to knit an uneven jacquard pile knitted fabric by selecting pile or non-pile based on the pattern signal output from the controller. Of.

In the electromagnetic selection device of FIGS. 1-4, the north pole of the permanent magnet is arranged outward and the south pole is arranged inward, but this device is adopted as the sinker control device of the circular knitting machine. In this case, if the polarity is reversed every other feeder, the residual magnetism generated in the rocking piece can be prevented. At this time,
When the positive voltage or the negative voltage applied to the electromagnets is reversed every other feeder (for example, as shown in FIG. 18, both ends of the first and second electromagnets arranged in series every other feeder are crossed), the control device The active or inactive control signal from
Each feeder may have the same polarity direction.

[0037]

The average value of the measurement results of the magnetic flux density of the electromagnetic selection device according to the present invention is shown in Table 1.

[Table 1]

By applying an exciting voltage of -4 volts to the first electromagnet of this apparatus to demagnetize the first attracted portion, the first magnetic flux a due to the permanent magnet is generated by the third electromagnet generated by the first electromagnet.
The first magnetic flux a moves to the second magnetic field as compared with the state in which the first electromagnet is blocked by the magnetic flux c and no voltage is applied to the first electromagnet.
The magnetic flux becomes a '(see FIG. 14 and Table 1). Similarly, an exciting voltage of +4 volts is applied to the first electromagnet, and the second magnetic flux b generated by the permanent magnet is changed to the fourth magnetic flux d generated by the first electromagnet.
Is induced by the first electromagnet, and most of the second magnetic flux b moves to the first magnetic field as compared with the state where no voltage is applied to the first electromagnet.
The magnetic flux is b ′ (see FIG. 15 and Table 1).

Next, an exciting voltage of -4 V is applied to both sides of the first electromagnet of the present apparatus and the second electromagnet connected in series to the first electromagnet, and the first attracted portion is demagnetized. One magnetic flux a is the fifth generated by the first electromagnet.
Most of the first magnetic flux a is blocked by the magnetic flux e, moves to the second magnetic field, becomes the first magnetic flux a ′, and has the magnetic flux density to which the sixth magnetic flux f generated by the second electromagnet is added (FIG. 16). , Of Table 1).

Even when an exciting voltage of +4 V is applied to both ends of the first electromagnet and the second electromagnet connected in series to the first electromagnet, the measured values of (x) and (y) in Table 1 are exchanged,
Since the same result was obtained, it was omitted.

Further, as shown in FIG. 17, the cross-sectional shape of the outer end portion of the permanent magnet was made into a mushroom type, and the measurement was performed in the same manner as described above (-in Table 1).

As a result, when the cross-sectional shape of the tip of the permanent magnet is a mushroom type, the magnetic flux density is low at the intermediate point, and a higher magnetic flux density can be obtained at the first and second attracted portions which are the needle selection portions. It was

As described above, the electromagnetic selector of the present invention generates a strong magnetic field with low power consumption and is compact.

According to the knitting tool control device of the jacquard circular knitting machine of the present invention, since the compact electromagnetic selection device is used, the space of the device can be saved.
In addition, since the electromagnetic selection device has a strong magnetic field, needle selection errors are reduced.

Further, in the swing piece, the wedge-shaped wedge portion at the end of the attracted portion of the sucked swing piece surely engages with the swing piece lasing cam having a trapezoidal cross section. Therefore, the rocking piece engaged with the rocking piece lasing cam does not come off from the rocking piece lasing cam, so that control without erroneous selection is possible. Since the swinging piece does not have a protruding bat, there is almost no danger of the bat breaking even if a control error occurs.

Further, since the swinging piece, which is a single type of control member, is controlled, the suction member of the control device can be downsized, and since the jacquard pattern is controlled by the computer, knitting with a wide pattern range is possible. The ground can be manufactured.

[Brief description of the drawings]

FIG. 1 is a side view of an electromagnetic selection device of the present invention.

FIG. 2 is a schematic view showing a state of magnetic lines of force of the electromagnetic selection device of the present invention when no power is supplied.

FIG. 3 is a schematic diagram showing a state of magnetic lines of force of the electromagnetic selection device of the present invention when a positive voltage is applied from A to B.

FIG. 4 is a schematic diagram showing a state of magnetic lines of force of the electromagnetic selection device of the present invention when a negative voltage is applied from A to B.

FIG. 5 is an array diagram of a cam, a needle, a sinker, an intermediate member, a swing piece, and a swing piece base material showing an embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a sinker control process in the AA cross section of FIG. 5 showing an embodiment of the present invention.

FIG. 7 is a cross-sectional view showing a sinker control process in the BB cross section of FIG. 5 showing an embodiment of the present invention.

FIG. 8 is a cross-sectional view showing a sinker control process in the cross section C-C of FIG. 5 showing an embodiment of the present invention, FIG. 4a shows pile selection, and FIG. 4b shows non-pile selection.

9A and 9B are sectional views showing a sinker control process in a DD section of FIG. 5 showing an embodiment of the present invention, FIG. 9A showing pile selection and FIG. 9B showing non-pile selection.

10 is a cross-sectional view showing the sinker control process in the EE cross section of FIG. 5 showing the embodiment of the present invention.
a shows pile selection, and FIG. 10b shows non-pile selection.

FIG. 11 is a sectional view showing a sinker control process in a section FF of FIG. 5 showing an embodiment of the present invention.

FIG. 12 is a perspective view showing a relationship between a rocking piece cancel cam, a suction member, a rocking piece lasing cam, and a rocking piece and a rocking piece base material in a rocking piece control unit.

FIG. 13 is a conceptual diagram of the device of the present invention in a state where no excitation voltage is applied.

FIG. 14 is a conceptual diagram of the device of the present invention in a state where a −excitation voltage is applied to the first electrode.

FIG. 15 is a conceptual diagram of the device of the present invention in a state where a + excitation voltage is applied to the first electrode.

FIG. 16 is a conceptual diagram of the device of the present invention in a state where an excitation voltage is applied to both ends of the first electrode and the second electrode.

FIG. 17 is a front view of a permanent magnet having a mushroom-shaped cross-sectional shape of an outer end portion used for comparative measurement.

FIG. 18 is a wiring state according to another embodiment of the present invention,
(A) is an even feeder and (b) is an odd feeder.

[Explanation of symbols]

 1 knitting needle 2 sinker 2b sinker nose 3 intermediate member 4 swinging piece base material 4e recess 5 swinging pieces 5a, 5c attracted part d wedge part e protrusion 6 yarn carrier 7 inner sinker cam 8 outer sinker cam 9 intermediate member lazing cam 10 1st intermediate | middle cam 10b Downward inclination part 11 2nd intermediate | middle cam 12 Oscillating piece lasing cam 12a Ascending inclination part 13a, 13b Adsorption member 131a, 131b Exciting coil 132a, 132b Core 14 Oscillating piece canceling cam 20 Permanent magnet GY ground yarn PL pile loop PY pile yarn

Claims (4)

[Claims] 1. A swinging piece (5) having first and second sucked portions (5a, 5c) provided at left and right ends, and first and second sucked portions of the swinging piece are selectively formed. An electromagnetic selection device comprising a permanent magnet (20) and first and second electromagnets (13a, 13b) connected in series on both sides of the permanent magnet (20). 2. The apparatus according to claim 1, wherein the first and second attracted portions (5a, 5c) provided on the left and right end portions of the swinging piece have a downwardly inclined portion that extends outward. 3. A device according to claim 1, wherein the outer end of the permanent magnet (20) has a mushroom-shaped cross section. 4. A control device for a jacquard knitted fabric in a circular knitting machine, in which a knitting tool (2) is movably mounted, the swinging device being mounted in the same groove as the knitting tool and controlling the knitting tool. One piece base material (4), at least one swing piece (5) swingably supported by the swing piece base material (4), and corresponding to both ends of the swing piece (5), respectively. A magnet portion having at least a pair of attraction members (13a, 13b), at least one rocking piece lasing cam (12) for raising the rocking piece (5), and a control cam (for controlling the knitting tool). 7 and 8) and a jacquard knitted fabric control device for a circular knitting machine, which comprises an intermediate cam (10, 11) for controlling the swinging piece base material (4), wherein the magnet portion is a permanent magnet and both sides thereof. Consisting of first and second electromagnets connected in series to the Knitting tool control apparatus according to claim.