KR100447010B1 - Electromagnetic selection device and knitted tool control device provided therewith - Google Patents

Abstract

It is an object of the present invention to provide an electromagnetic selection device that exhibits a strong adsorption force at a small power, and includes a rocking piece 5 having first and second adsorption portions 5a and 5c provided at left and right ends, and a first swinging piece. And a magnet member for selectively adsorbing the second suction part. The magnet member is composed of the permanent magnet 20 and the first and second electromagnets 13a and 13b connected in series to both sides thereof. This electromagnetic selection device can be used as a knitting tool control device for circular knitting machines. The knitting tool is, for example, a sinker, a needle (latch needle, a compound needle), an intermediate member (such as a jack), a hook member, or the like.

Description

Electromagnetic selection device and knitting tool control device having the same

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic selection device that exhibits strong adsorption force with a small power by using a permanent magnet and an electromagnet, and a knitting-tool control device having the same.

(Prior art)

In circular knitting machines, needle selection is required to perform jacquard weave, so that a specific knitting needle can be operated or inoperative. You need to switch to For this purpose, electromagnetism needle devices combining permanent magnets and electromagnets are widely used. For example, Japanese Patent Laid-Open Nos. Hei 6-207352, Hei 4-289250, Hei 2-60777, Hei 62-299554, US Patent No. 3,518,845, US Patent No. 3,283,541 and the like are known. In addition, in the devices of US Pat. Nos. 3,518,845 and 3,283,541, several control electromagnets are arranged to switch the knitting tool to the acting or non acting position.

(Tasks to be solved by the invention)

The conventional apparatus using the former permanent magnet and the electromagnet has demagnetized the magnetic force of the permanent magnet with the electromagnet to control the knitting tool. Therefore, the magnetic force stronger than the magnetic force of the permanent magnet cannot be generated, and in order to obtain sufficient adsorption force, it is necessary to enlarge both the permanent magnet and the electromagnet, and it is difficult to attach a large number to the knitting machine tip of the knitting machine having a limited space.

In the conventional apparatus using the latter control electromagnets, the control unit for controlling the knitting tool at the operating position and the control unit for the non-operational position require the respective control unit, so that the control unit becomes large. There was a problem that the manufacturing cost is also expensive.

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

(Means to solve the task)

The electromagnetic selection device of the present invention includes a rocker bar having first and second absorbed portions provided at left and right ends, and a magnet member for selectively absorbing the first and second absorbed portions of the rocking piece. member), and the magnet member is composed of a permanent magnet and first and second electromagnets connected in series to both sides of the permanent magnet. The first and second absorbed portions provided at the left and right ends of the swinging piece were provided with downward inclined portions directed outwardly, and the outer leading portion of the permanent magnet had a mushroom-shaped cross section.

In addition, the present invention is a jacquard-fabric control device in a circular knitting machine mounted to move the knitting tool, it is mounted in the same groove as the knitting tool to control the knitting tool A magnet part having a rocker-bar-supporting base, at least one rocking piece supported by the rocking material, and at least one pair of adsorption members respectively corresponding to both ends of the rocking piece; At least one rocker-bar-raising cam for raising the swinging piece, a control cam for controlling the knitting tool, and an intermediate cam for controlling the rocking piece base material. In the knitting tool control apparatus of a circular knitting machine, the magnet part consists of a permanent magnet provided with the 1st, 2nd magnetic field, and the 1st, 2nd magnet connected in series with the both sides. Examples of knitted tools include sinkers, knitting needles (latch needles, composite needles), intermediate members (jacks, etc.), hook members, and the like.

(Action)

According to the electromagnetic selection device of the present invention, when the first electromagnet adsorbs the first absorbed portion, the second magnetic flux caused by the permanent magnet is blocked by the second magnetic flux generated by the second electromagnet, thereby blocking the permanent magnet. The second magnetic flux by generates a stronger magnetic field in addition to the first magnetic flux generated by the permanent magnet and the first magnetic flux generated by the first electromagnet.

On the other hand, when the second electromagnet adsorbs the second adsorbed portion, the first magnetic flux by the permanent magnet is blocked by the first magnetic flux generated by the first electromagnet, and the first magnetic flux by the blocked permanent magnet is caused by the permanent magnet. In addition to the second magnetic flux generated by the second magnetic flux and the second electromagnet, a stronger magnetic field is generated.

According to the knitting tool control apparatus of the present invention, the oscillating piece adsorbed by the adsorption member according to the pattern-information signal is engaged with the oscillating piece rising cam and pushed together with the oscillating piece base material for pivotally supporting the oscillating piece. . The oscillating piece base material pushes the intermediate member inserted into the sinker groove inside the oscillating piece base material to raise (advance) the intermediate member. The butt of the raised intermediate member is engaged with the intermediate member rising cam, so that the intermediate member is further raised (advanced). The intermediate member raises (advances) the knitting tool inserted into the sinker groove inside the intermediate member. The raised (advanced) knitting tool forms the jacquard fabric.

(Example)

Hereinafter, an embodiment of the present invention according to the accompanying drawings,

As shown in FIG. 1, in a set of groove | channel (not shown), the thin plate-shaped oscillation piece 5 is fitted so that it may rock to the lower part of the plate-shaped oscillation piece base material 4. The lower part of the oscillation piece base material 4 becomes the semicircular socket 4e. In order to correspond to this socket 4e, the circular protrusion part 5e protrudes in the center upper end part of the swinging piece 5, and the socket 4e and the protrusion part 5e are pivotally connected mutually. The left and right ends of the swing piece 5 are symmetrical, and beveled wedge-shaped ends 5c and 5d are formed above, and adsorption parts 5a and 5b are formed below. A step is provided between the left and right suction portions 5a and 5b and the lower end portion of the center.

Opposing the swinging piece 5, the electromagnetic selection device of the present invention is fixedly installed. This apparatus has a permanent magnet 20 in the center, and the first and second electromagnets 13a and 13b are provided on both sides thereof, and each position is fixed by the support member 21 disposed below. Each electromagnet is composed of first and second excitation coils 131a and 131b positioned at both sides of the permanent magnet 20 and first and second cores 132a and 132b positioned at both ends of the excitation coil. Consists of. 2 to 4, the first and second electromagnets 13a and 13b are arranged in series. The tip ends of the first and second cores 132a and 132b are preferably inclined to face outwards, which is preferable because they cause large swings. In addition, as described later, the outer leading end of the permanent magnet is preferably a mushroom-shaped cross section.

The positive and negative voltages are applied to both ends of the wirings of the first and second electromagnets arranged in series so that the first and second core portions 132a and 132b of these first and second electromagnets are swinging pieces 5. The adsorption part 5a, 5b of is selectively adsorb | sucked.

For example, as shown in the third diagram, when a positive voltage is applied from A to B, the first magnetic field 20a by the permanent magnet 20 is blocked by the magnetic flux generated by the first electromagnet 13a, and the second electromagnet The magnetic flux generated by 13b and the blocked first magnetic field 20a are added to the second magnetic flux 20b by the permanent magnet 20 to generate a stronger magnetic field. At this time, the second core 132b of the second electromagnet 13b selectively adsorbs the adsorption part 5b of the swinging piece 5.

4, when a negative voltage is applied from A to B, the second magnetic flux 20b by the permanent magnet 20 is blocked by the magnetic flux generated by the second electromagnet 13b, and the first electromagnet The magnetic flux generated by 13a and the blocked second magnetic field 20b are added to the first magnetic flux 20a by the permanent magnet 20 to generate a stronger magnetic field. At this time, the first core 132a of the first electromagnet 13a selectively adsorbs the adsorption portion 5a of the swinging piece 5.

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

5-11 is a principal part of the sinker control apparatus which concerns on 1st Embodiment of this invention. Fig. 5 shows an arrangement diagram of the cam, the sinker 2, the intermediate member (intermediate jack) 3, the oscillation piece base material 4, the oscillation piece 5, and the knitting needle 1 and the sinker 2. Action lines 1L and 2L are shown.

As shown in Fig. 6, the sinker dial 16 is firmly fixed to the upper part of the rotary cylinder 15 of the circular knitting machine, and the sinker groove is radially formed on the upper part of the sinker dial 16. The sinker 2 is set in the sinker groove.

Yarn carrier for supplying two kinds of knitting yarns (GY: ground yarn) in pile knitting and pile yarn (PY: pile yarn) on the top of the sinker 2 ( 6) (refer FIG. 5-FIG. 10) is provided. The yarn carrier 6 includes a ground-yarn feeder 6a for supplying the ground yarn GY, a pile yarn feeder 6b for supplying the pile yarn PY, and the like. It is firmly fixed.

The sinker 2 acts on an inner sinker cam 7 and an outer sinker cam 8 attached to a sinker cap 17 corresponding to the sinker dial 16. By sliding the sinker groove in the radial direction. The sinker 2 is supported by its vertical edges 2e and 2d sandwiched by the side edges 7a and 7b of the inner sinker cam 7 and the butt 2a by a cam track T2. (See Fig. 5).

The intermediate member 3 is set in the sinker groove in the outer circumferential direction of the sinker 2. The intermediate member 3 has at least one butt 3a and a cam track T3 formed by the outer sinker cam 8 and the first intermediate cam 10 attached to the opposing sinker cap 17 (FIG. Slide inside the sinker groove in the radial direction.

The intermediate member lift cam 9 (see FIGS. 5 and 10) controls the butt of the intermediate member 3 to the acting, non-acting position. When the intermediate member lift cam 9 is in the acting position, a file or non-pile can be selected, and only the non-pile can be selected in the non-acting position.

5 and 12, the electromagnetic selection device according to the present invention is set in the sinker groove in the outer circumferential direction of the intermediate member 3. The oscillation piece base material 4 has at least one butt 4a controlled by the cam track T4 formed by the first intermediate cam 10 and the second intermediate cam 11.

Opposite to the swinging piece 5, the adsorption members 13a and 13b (see FIGS. 5 and 7) of the magnet portion are attached to the sinker cap 17. As shown in FIG. On the basis of the signal output from the controller by the predetermined predetermined pattern information, these adsorption members 13a and 13b selectively adsorb the adsorption portions 5a and 5b of the swinging piece 5. Moreover, the rocking-bar-cancelling cam 14 (see FIG. 5) is made to swing the rocking piece 5 which is free from swinging before entering the suction members 13a and 13b of the rocking piece 5 (see FIG. 5). ), It is preferable that the inclined surface is horizontal, and then the swinging piece 5 passes through the adsorption members 13a and 13b. In addition, it is preferable to use a nonmagnetic material for the cancel cam to reduce the leakage magnetic force from the permanent magnet.

When advancing the sinker 2, a signal is sent from the controller to the adsorption member 13b, and the adsorption portion 5b of the swinging piece 5 corresponding to the adsorption member 13b is adsorbed (Figs. 7 and 5). See section BB). Until this time, the ground yarn GY is supplied from the ground yarn feeder 6a to the needle 1 over the sinker top 2f of the sinker 2.

After the adsorbed portion 5b passes through the adsorption member 13b, the wedge portion 5d of the swinging piece 5 is engaged with the upward inclined portion 12a of the trapezoidal cross section of the swinging piece raising cam 12, The oscillation piece 5 is pushed out with the oscillation piece base material 4 toward the center of the knitting machine (see CC sectional drawing of FIG. 7, FIG. 5). The front end 4b of the swinging piece base material 4 pushed out pushes the rear end 3b of the intermediate member 3. The butt 3a of the intermediate member 3 is engaged with the upward inclined portion 9a of the intermediate member lift cam 9, and the intermediate member 3 is pushed out toward the center of the knitting machine (FIG. 9A, FIG. 9). See DD section of 5).

The rear end 2c of the sinker 2 is pushed out by the front end 3c of the pushed-out intermediate member 3. When the intermediate member 3 reaches the apex 9b of the intermediate member lift cam 9, the sinker 2 is piled up on the sinker nose 2b by the intermediate member 3 which is pushed out. loop) to the position where it can be knitted (see FIG. 10 (A) and FIG. 5 EE sectional view). At this time, the pile yarn PY is supplied from the pile yarn feeder 6b to the needle 1 over the sinker nose 2b of the sinker 2. FIG. 11 (F-F cross section in FIG. 5) shows a state in which the pile loop PL is formed on the sinker nose 2b by the advanced sinker 2.

Further, at the apex 9b of the intermediate member lift cam 9, it is preferable to set the tip of the nose 2b of the sinker 2 which is pushed out so as to move inward 0.3 mm or more from the circumferential action line of the needle. desirable. This is because the pile loop can be reliably formed at a position 0.3 mm or more away from the tip of the sinker nose 2b.

The intermediate member 3 is pushed out by the oscillating piece base material 4 at the position where the intermediate member 3 is engaged with the intermediate member rising cam 9, and then the butt 4a of the oscillating piece base material 4 is removed from the first intermediate cam 10. Engaged in the downward inclined portion 10b, the swing piece base material 4 is returned to the non-pile position together with the swing piece 5.

In the above configuration, it is also possible to omit the intermediate member 3 and the intermediate member control cam. In that case, the swinging piece raising cam 12 pushes the swinging piece 5 together with the swinging piece base material 4 The base material 4 pushes the sinker 2 directly.

When the sinker 2 is not advanced, a signal is sent from the controller to the adsorption member 13a to adsorb the adsorption portion 5a of the swing piece 5 corresponding to the adsorption member 13a (see FIG. 7). In addition, in Fig. 7, it is not clear which of the adsorption members 13a and 13b is adsorbed by which of the to-be-adsorbed parts 5a and 5b by the limitation on drawing.

The swinging piece 5 adsorbed by the suction member 13a does not mesh with the upward inclined portion 12a of the swinging piece upward cam 12, and the swinging piece 5 is the upwardly inclined part 12a of the swinging piece upward cam 12a. Passing below, the oscillation piece 5, the oscillation piece base material 4, and the intermediate member 3 progress in the circumferential direction without moving in the front-rear direction (Fig. 8 (B), Fig. 9 (B), Fig. 2). 10 (B)). The sinker 2 is not engaged with the intermediate member 3 and is controlled by the sinker cams 7 and 8 only. At this time, even if the pile yarn PY is supplied, the pile loop PL is not formed because the pile yarn is knitted on the sinker top 2f. The ground yarn GY is supplied to the needle 1 along with the pile yarn PY over the sinker top 2f of the sinker 2 (see Fig. 10B and Fig. 5E cross-sectional view).

In this manner, by using the sinker control device of the present invention, a pile and a non-pile can be selected in accordance with the pattern signal output from the controller to form a jacquard pile fabric of irregularities.

In addition, in the electromagnetic selection device of FIGS. 1 to 4, the N pole of the permanent magnet is directed outward and the S pole is located inward. However, when the device is employed in the sinker control device of the circular knitting machine, one feeder If the polarity is reversed in each case, residual magnetism generated in the swinging piece can be prevented. At this time, if the positive or negative voltage applied to the electromagnet is reversed for each feeder (for example, as shown in FIG. 18, the both ends of the first and second electromagnets arranged in series for each feeder are crossed), The control signal of the active or non-acting should be in the same polarity direction as each feeder.

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

Fig. 2 is a schematic diagram showing the state of the magnetic lines of force of the electromagnetic selection device of the present invention when no electricity is applied.

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

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

5 is an arrangement diagram of a cam, a needle, a sinker, an intermediate member, a rocking piece, a rocking piece base material, showing an embodiment of the present invention.

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

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

8 is a cross-sectional view showing a sinker control process in the C-C cross-section of Figure 5 showing an embodiment of the present invention, Figure 8 (A) shows a file selection, Figure 8 (B) shows a non-file selection.

9 is a cross-sectional view showing a sinker control process in the D-D cross section of FIG. 5 showing an embodiment of the present invention, FIG. 9 (A) shows file selection, and FIG. 9 (B) shows non-file selection.

10 is a cross-sectional view showing a sinker control process in the section E-E of FIG. 5 showing an embodiment of the present invention, FIG. 10 (A) shows file selection, and FIG. 10 (B) shows non-file selection.

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

12 is a perspective view illustrating a relationship between a swing piece cancel cam, a suction member, a swing piece lift cam, and a swing piece and a swing piece base material in the swing piece control unit;

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

14 is a conceptual diagram of the apparatus of the present invention in a state in which a negative excitation voltage is applied to the first electrode.

15 is a conceptual diagram of the apparatus of the present invention in a state in which a positive excitation voltage is applied to the first electrode.

Fig. 16 is a conceptual diagram of the apparatus 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 in which the cross-sectional shape of the outer leading end portion used in the comparative measurement is mushroom-shaped;

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

* Explanation of symbols for the main parts of the drawings

1: single hand 2: sinker

2b: sinker nose 3: intermediate member

4: base material 4e: wobbling

5: oscillation piece 5a, 5c: adsorption part

d: wedge part e: protrusion part

6: yarn carrier 7: inner sinker cam

8: outer sinker cam 9: middle member rising cam

10: first intermediate cam 10b: downward slope

11: 2nd intermediate cam 12: swinging upward cam

12a: upward inclined portion 13a, 13b: adsorption member

131a, 131b: female coil 132a, 132b: core

14: oscillation cancel cam 20: permanent magnet

GY: Ground Yarn PL: File Loop

PY: File Yarn

Table 1 shows the average value of the measurement results of the flux density of the electromagnetic selection device according to the present invention.

TABLE 1

The first magnetic flux a by the permanent magnet is interrupted by the third magnetic flux c generated by the first electromagnet by demagnetizing the first absorbed portion by applying an excitation voltage of -4 volts to the first electromagnet of the apparatus. Compared to the state where no voltage is applied to the first electromagnet, the first magnetic flux a moves to the second magnetic field and becomes the first magnetic flux a '(see Fig. 14, ② in Table 1). Similarly, by applying an excitation voltage of +4 volts to the first electromagnet, the second magnetic flux b caused by the permanent magnet is induced by the fourth magnetic flux d generated by the first electromagnet, and thus the first magnetic Most of the two magnetic fluxes b move to the first magnetic field to become the second magnetic flux b '(see Fig. 15, 3 in Table 1).

Next, by applying an excitation voltage of -4 volts to both sides of the first electromagnet of the device and the second electromagnet connected in series with the first electromagnet, the first magnetic flux a by the permanent magnet Blocked by the fifth magnetic flux e generated by the first electromagnet, most of the first magnetic flux a moves to the second magnetic field to become the first magnetic flux a ', and the magnetic flux to which the sixth magnetic flux f generated by the second electromagnet is applied. It becomes density ((④ of FIG. 16, Table 1)).

Except when the measured values of (x) and (y) of Table 1 are replaced even when an excitation voltage of +4 volts is applied to both ends of the first electromagnet and the second electromagnet connected in series with the first electromagnet, The same result is omitted.

In addition, as shown in FIG. 17, when the cross-sectional shape of the outer end part of a permanent magnet was made into mushroom shape, it measured similarly to the above (refer to ⑤-8 of Table 1).

As a result, when the cross-sectional shape of the distal end of the permanent magnet was mushroom-shaped, the magnetic flux density was lowered at the midpoint, and a higher magnetic flux density was obtained than at the first and second to-be-adsorbed portions, which are the tip needles.

As such, the electromagnetic selection device of the present invention generates a strong magnetic field with small power consumption, and is also compact.

According to the knitting tool control apparatus of the Jackaard circular knitting machine of this invention, since the compact electromagnetic selection apparatus is used, the installation space of an apparatus can be saved. In addition, since the electromagnetic selection device has a strong magnetic field, the needle-selection error is also reduced.

Moreover, the wedge part at the end of the to-be-adsorbed part of the adsorption | suction oscillation piece engages with the oscillation piece raising cam of trapezoid cross section. Therefore, the oscillating piece engaged with the oscillating piece rising cam does not escape from the oscillating piece rising cam, so that it can be controlled without a selection error. Since the swinging piece is not provided with a protruding butt, there is little risk of the butt bending even if a control error occurs.

Further, since the swing piece, which is a single type of control member, is controlled, the adsorption member of the control device can be miniaturized, and since the jacquard pattern is controlled by a computer, a wide pattern range can be produced.

Claims (4)

It consists of a rocking piece 5 having the first and second to-be-adsorbed portions 5a and 5c provided at the left and right ends, and a magnet member for selectively adsorbing the first and second to-be-sorbed portions of the rocking piece, The magnet member comprises a permanent magnet (20) and first and second electromagnets (13a, 13b) connected in series to both sides thereof. The method of claim 1, Each of the first and second absorbed portions (5a, 5c) provided at the left and right ends of the swinging piece includes a downwardly inclined portion facing outward. The method according to claim 1 or 2, Electromagnetic selection device, characterized in that the outer end of the permanent magnet 20 is a mushroom-shaped cross section. In the jacquard fabric control device in a circular knitting machine, in which a knitting tool (2) is mounted so as to move, A rocking piece base material 4 mounted in the same groove as the knitting tool to control the knitting tool; At least one oscillation piece 5 supported by the oscillation piece base material 4 so that oscillation is free; A magnet portion having at least one pair of adsorption members 13a and 13b respectively corresponding to both ends of the swinging piece 5; At least one swinging piece raising cam 12 for raising the swinging piece 5, Control cams 7 and 8 for controlling the knitting tool; It includes an intermediate cam (10, 11) for controlling the oscillation piece base material (4), The magnet unit includes a permanent magnet and first and second electromagnets connected in series to both sides of the permanent magnet, characterized in that the knitting tool control apparatus.