JP2909563B2 - Patterning device for warp knitting machine and control method thereof - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a patterning device in a warp knitting machine, and more particularly, to a patterning device in which guide points provided on a holding member can be individually position-controlled by a linear pulse motor and control thereof. About the method.

[Background Art] Conventionally, patterning in a warp knitting machine is performed by wrapping a pattern reed on which a guide point is mounted in a needle row direction of the pattern reed based on a pattern reed wrapping means such as a chain drum or an electronic patterning device. However, since all guide points mounted on a single row of reeds can obtain only the same amount of wrapping, the degree of pattern effect caused by the number of reeds is proportional to the number of reeds. Was.

In view of the above conventional problems, the present applicant has previously proposed a new patterning device in Japanese Patent Application No. 6-200750 (PCT / JP95 / 00032). In this patterning device, guide points are individually provided as a part of a moving body in a fixed guide path corresponding to a pattern reed, and are individually movably provided in the guide path.

However, in the patterning device, even if patterning is performed by using a linear pulse motor and controlling the movement of a movable element provided with a guide point,
There was room for improvement in:

When the number of holding members increases, it is necessary to cope with this by making the linear pulse motor thinner.

Due to the principle of the linear pulse motor, it is necessary to solve the problem of shortening the life of the bearing due to the large suction force generated between the stator and the moving element.

In the positioning control, it is necessary to take measures to prevent malfunction such as step-out, and to take measures against power failure and external noise.

As a problem in mounting on a warp knitting machine due to an increase in the number of holding members and the number of moving elements, it is necessary to improve a method of wiring a connection cable to the moving element and realize a free moving range of the moving element.

Due to the increase in the number of holding members and the number of moving elements, it is necessary to take measures to simplify the assembling and adjusting methods as a mounting problem.

Pitch machining accuracy of the stator poles assembled to the holding member,
It is necessary to take measures to correct the pitch error caused by the difference in the expansion coefficient of the holding member due to the pitch processing accuracy of the knitting needle and the environmental temperature change.

In terms of operation, since the pattern reeds of the holding member are arranged in multiple layers, it is necessary to take measures to easily replace the guide points of the respective moving elements at the back and align them with the knitting needles.

By increasing the number of sliders to be mounted, it is possible to perform high-speed positioning in synchronization with the high-speed rotation of the warp knitting machine while securing a free movement range of each slider, and a control method that can realize the above-mentioned ~ at low cost is necessary.

An object of the present invention is to provide a patterning device and a control method in a warp knitting machine in which the above-mentioned problems have been solved.

[Disclosure of the Invention]

The present invention incorporates a stator of a linear pulse motor on a holding member as a guide path, provides a plurality of movers at an arbitrary interval on the same path, and configures a part of the movers as a guide point, or In the patterning device of a warp knitting machine in which a guide bar is attached to the moving element, the pole of the moving element is arranged to be opposed to the poles on both sides of the stator.

As a result, the attraction forces generated between the stator and the mover cancel each other, and as a result the load on the bearing portion is reduced, so that the thickness of the pole of the mover can be reduced without reducing the thrust of the mover. Can be halved. Therefore, even when the number of holding members increases, it can be dealt with by making the linear pulse motor thinner.

Further, the present invention provides the patterning device, wherein the windings of the poles of the mover, that is, the magnetic paths of the two field magnets in the mover opposed to the poles on both sides of the stator are in the same direction. In this configuration, the moving element driving coil is combined with the NS direction of the field magnet and the tooth shape of the stator.

As a result, the leakage magnetic flux is reduced, and the magnetic flux generated by both the field magnet and the coil excitation passes through the poles of each other, so that the thrust is made uniform and the stable positioning of the guide point is achieved. Done.

Further, the present invention incorporates a stator of a linear pulse motor on a holding member as a guide path, provides a plurality of movers at an arbitrary interval on the same path, and configures a part of the movers as guide points, Alternatively, in a patterning device of a warp knitting machine in which a guide bar is attached to the mover, the above problem is solved by adopting the following control method.

According to a first control method of the patterning device of the present invention, in the patterning device of the warp knitting machine, a position sensor is provided in relation to a pole of the stator and a pole of the mover, and one pulse is received in response to the positioning command. The position sensor confirms that the poles of the moving element have moved in units, and generates the next positioning pulse, thereby controlling the acceleration / deceleration of the linear motor.

As a result, the positioning information of the moving element is logically incorporated as the moving condition of the positioning control command, the tracking of the moving element is guaranteed according to the command value, and the positioning control can be accurately performed.
At this time, particularly when the number of pulses per gauge is set to a plurality of pulses and controlled, position correction and the like can be easily performed, and more accurate position control is guaranteed.

A second control method of the patterning device according to the present invention, in the patterning device of a warp knitting machine similar to the above, includes an absolute position detecting unit whose span is adjusted in accordance with the pole pitch of the stator arranged on the holding member. The relationship between the position detected by the position detecting means and the excitation of the moving element driving coil is controlled.

As a result, the position of the moving element can always be detected, so that the moving element can be followed according to the position control command value,
Even when the power is turned on again after a power failure, it is not necessary to return to the reference position by performing the home return operation.
There is no loss of synchronism with external force noise due to differences in the tension of the pattern yarn or the yarn feeding method.

The third control method of the patterning device of the present invention is the same as the patterning device of the above-described warp knitting machine, in which the current control of the coil for driving the moving element and the excitation switching timing are obtained from the position detection value, so that the optimal positioning is performed. The positioning control of the moving element is performed by performing acceleration / deceleration. This ensures reliable positioning in a short time, stops at an accurate position, and prevents loss of synchronism.

The fourth control method of the patterning device of the present invention is the same as the patterning device of the warp knitting machine described above, except that the magnetic coupling between the power receiving coil of the mover and the induction coil mounted on the holding member is used. A method that uses a contact method or a contact method that provides a signal or power by contacting a slip ring with a current-carrying part on a part of the holding member and that freely controls the positioning of the mover by wireless control It is.
As a result, the size and weight of the device can be reduced, the thrust can be increased, and the speed can be increased.

The fifth control method of the patterning device of the present invention is the same as the patterning device of the above-described warp knitting machine, wherein a microcomputer or a logic circuit is mounted on the moving element, so that a guide wire coil for position correction or the like is provided. In this case, the control signal amount is reduced to perform the positioning control of the moving element.

In this case, even if the amount of information transmitted by the guide wire increases and the processing capacity of the moving element positioning control computer increases, the positioning control of each moving element can be individually performed by the microcomputer or the logic circuit mounted on the moving element as described above. Do it,
There is no restriction on the information amount of the control signal, the load on the moving element positioning control computer can be greatly reduced, high-speed rotation can be performed, high-speed accurate positioning control can be performed, and the apparatus is more practical.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a warp knitting machine to which an embodiment of a patterning device of the present invention and a control method thereof are applied.

FIG. 2 is a cross-sectional view of a holding member including a guide point, illustrating an example in which two sets of stator poles are arranged on the front and back of the holding member in the patterning apparatus of FIG.

FIG. 3 shows an embodiment in which a linear pulse motor in which the poles of the moving element are opposed to the poles of the stator from both sides and a magnetostrictive sensor used for position detection of the moving element are attached to the patterning apparatus of FIG. It is a partially notched perspective view which shows an example.

FIG. 4 is a related configuration diagram of a pole of a moving element and a pole of a stator of the linear pulse motor in the patterning apparatus of FIG.

FIG. 5 is a block diagram showing an example of a control configuration of the patterning device by linear pulse motor control in the patterning device of FIG.

FIG. 6 is a waveform diagram of an output signal of a magnetostrictive absolute sensor for detecting a pole position of a moving element and a signal indicating a pole position of a stator in the patterning apparatus of FIG.

FIG. 7 is a diagram showing the position control parameters of the linear pulse motor in the patterning device of FIG.

FIG. 8 is a partially cutaway perspective view of an embodiment of the patterning device in which the connection cable is eliminated from the embodiment of FIG.

FIG. 9 is a block diagram showing an example of the control configuration of the embodiment device in which the patterning device of FIG. 8 performs non-contact power supply and transmission of control signals.

FIG. 10 is a block diagram showing an example of a control configuration of an induction wire coil, a power receiving coil, and a mover in the patterning device of FIG.

FIG. 11 is a signal waveform diagram showing a signal example of a power supply oscillating unit of the mover in the patterning device of FIG.

FIG. 12 is a partially cutaway perspective view of an embodiment in which the poles of the mover are arranged so as to face only one side of the poles of the stator.

FIG. 13 is a block diagram showing an example of a positioning control configuration by a microcomputer mounted on the moving element.

FIG. 14 is a signal waveform diagram showing an example of a signal of the power supply oscillation unit of the movable element in the patterning device of the embodiment of the previous figure.

FIG. 15 is an explanatory diagram of a data array example of a control signal transmitted by the control signal induction wire coil.

FIG. 16 is a block diagram showing one row of a control configuration of the embodiment in which two systems of a power supply induction coil and a control signal induction coil are used.

FIG. 17 is a partially cutaway perspective view of a holding member showing an embodiment in which a guide bar is attached to a moving element for each holding member.

[Best mode for carrying out the invention]

 Hereinafter, the present invention will be described with reference to the drawings.

FIG. 1 is a schematic perspective view of a warp knitting machine to which an embodiment of a patterning device of the present invention and a control method thereof are applied. Reference numeral 1 denotes a traverse that is a part of the machine frame, and 2 denotes hangers that are suspended from and fixed to the traverse 1. A plurality of hangers are provided at a predetermined distance. Reference numeral 3 denotes a holding member in which the stator of the linear pulse motor is incorporated. The holding member 3 has a bar shape extending in the width direction of the knitting machine. Reference numeral 4 denotes a moving element which reciprocates linearly on the holding member 3, and each of the moving elements 4 has a guide point 5 (5a).
-1,5a-2,5a-3) are attached. This mover 4
The holding member 3 at least partly constituting the stator of the linear pulse motor usually has several to
More than a dozen are movably mounted according to the patterning program.

Reference numeral 6 denotes a control unit, which includes well-known control devices, that is, a position control circuit, a linear pulse motor drive circuit, a position detection circuit, and a storage device-equipped computer. Description is omitted because it is publicly known. Since the position control method of the linear pulse motor is an important part of the present invention, FIG. 4, FIG. 5, FIG.
This will be described in detail later.

One end of each holding member 3 holds a signal cable 7 as one of signal transmission means to each moving element 4.
Reference numeral 8 denotes a knitting needle, 9 denotes a trick plate, and 10 and 11 denote levers and arms for driving the trick plate 9, which are mounted on a support shaft 12. The trick plate 9 is swung in the direction of arrow A together with the knitting needle 8. As the knitting needle 8, besides the conventionally used knitting needle such as a compound needle, a spatula needle and a mustache needle,
Any type of knitting needle having a similar function may be used.

Next, the structures of the stator of the linear pulse motor incorporated in the holding member 3 and the driving portion including the moving element will be described.

FIG. 2 is a longitudinal sectional view of an embodiment in which the moving element 4 is mounted on both sides of the holding member 3 provided integrally with the holder 13, and FIG. 3 is a partially cutaway perspective view of one side thereof. Numeral 18 denotes a stator having teeth-shaped poles formed on both sides at the top and bottom, which is provided on the holding member 3 over the entire knitting width area.
The entire knitting width can be moved. Usually, several to several tens of moving elements 4 (4-1, 4-2,...
... 4-n) are attached. Reference numeral 14 denotes a moving element bearing, which holds the moving element 4 and the guide point 5 attached to the moving element 4.

The structure of the moving element 4 of the linear pulse motor is as follows. 15 (15a, 15b) in the figure is the field magnet (magnet), 1
6 (16a-1, 16a-2, 16b-1, 16b-2) are the poles of the mover.
7 (17a-1, 17a-2, 17b-1, 17b-2) are mover drive coils (windings). Mover poles 16a-1, 16a-2 and mover drive coils 17a-1, 17a-2, and mover poles 16b-1, 16b
-2 and the mover driving coils 17b-1, 17b-2 are opposed to the poles of the stator 18 in order to cancel the large attractive force generated between the poles 16 of the mover and the poles of the stator 18. Are arranged as follows. As a result, the load on the moving element bearing 14 can be reduced and the gap between the two poles can be reduced at the same time. By reducing the exciting current to the moving element driving coil 17, it is possible to secure thrust and suppress heat generation. In addition, downsizing and long life of the bearing are realized. Also, the moving element driving coil 17 and the moving element electrode 16
This contributes to a reduction in the thickness of the movable element 4 as a whole.

Reference numeral 19 denotes a magnetostrictive absolute sensor probe which is provided over the entire knitting width of the holding member 3. Reference numeral 20 denotes a position detecting sensor magnet for each movable element 4 (4-1, 4-2,..., 4).
-N) (see FIG. 5). The magnetostrictive absolute sensor probe 19 detects the position of the sensor magnet 20 of the movable element 4 on the holding member 3 to detect the position of each movable element and obtains data for position control. Reference numeral 7a denotes a signal cable for connecting the linear pulse motor drive circuit provided in the control device and the mover drive coil 17 of the mover 4, which is a flexible cable for freeing the movable range of the mover 4. An embodiment in which this signal cable is excluded will be described later.

FIG. 4 is a related configuration diagram of a pole of a moving element and a pole of a stator of a linear pulse motor employed in the patterning device of the present invention,
Since the basic structure is publicly known, a detailed description of the basic operation is omitted, and the operation principle of only the portion related to the present invention will be described.

The two sets of poles 16 of the mover and the mover drive coil 17 are arranged and combined on both sides relative to the poles of the stator 18, and the teeth of the poles of the stator 18 are set upside down, and the field magnet
Some problems have been solved by making the NS directions 15a and 15b upside down.

Explaining the operation in detail, it is described in FIGS. 2 and 3 that the load on the moving element bearing 14 is greatly reduced by canceling the suction force generated between the upper and lower poles. As described above, this is a solution to the greatest problem of the linear pulse motor used in the device of the present invention. Further, by solving the problem of the suction force, the gap between the poles can be made as small as possible, so that the thrust can be increased. As described above, due to the conventional structure, a difference in magnetic flux density occurs due to a difference in magnetic path resistance and a leakage magnetic flux between the inner pole and the outer pole near the field magnets 15a and 15b, and the inner magnetic flux is generated. There was a variation in thrust between the outer pole and the outer pole. In the present invention, the upper and lower two sets of linear pulse motors are constituted by a combination of an inner pole and an outer pole, and the poles of the stator 18 are set to be upside down (alternating), and the field magnets 15a,
This problem was solved by turning NS upside down for 15b.

Also, the upper and lower mover drive coils 17a-1, 17b-
1 are connected in the same phase, and the upper and lower mover drive coils 17a-2, 17b-2 for the B phase are also connected in the same phase, so that the pole numbers 1p, 2p, 3p, 4p of the mover shown in FIG. When the upper side is the outer side, the lower side is the inner side, and when the upper side is the inner side, the lower side is a combination of the outer side, so that the variation in thrust can be minimized and the position control performance can be improved.

Field magnets 15a, 15b and mover drive coil 17a-
The path φ of the magnetic flux generated by the excitation of 1,17b-1 is shown in FIG.
As shown by a broken line in FIG. 7, the magnetic flux always passes through both the upper field magnet 15a and the lower field magnet 15b, so that a highly efficient thrust can be obtained. Also, the moving element driving coil 17a-2,1
When exciting 7b-2, a high-efficiency thrust can be obtained for the same reason.

In this embodiment, the pole pitch Pd of the stator 18 is set to be four times the gauge pitch of the guide points (1/18 inch = 1.411 mm). In the structure shown in FIG. 4, as is well known, the amount of movement is 1.411 mm per pulse in the case of one-phase excitation or two-phase excitation. In the case of the 1-2-phase excitation method, 0 is set for one pulse.
This translates to a movement of 705mm. In this embodiment, in order to perform position control at a pitch of 1.411 mm, a combined method of one-phase excitation and 1-2-phase excitation is employed. The position control method will be described later with reference to FIGS. 5, 6, and 7.

Next, an example of a control method in the patterning device of the embodiment of the present invention will be described with reference to FIG.

Reference numeral 30 denotes a computer for controlling the pattern. A pattern data disk 31 based on the pattern configuration of the lace is created in advance, read into the internal storage device of the pattern control computer 30, stored and stored in the pattern control computer 30. ing. This pattern data is decomposed for each holding member by the mover position control computer 23 of each holding member, transmitted by the pattern data signal S8a, and stored in the storage device in the mover position control computer 23. When the knitting machine is driven, a proximity sensor 25 provided on the main shaft 24 of the knitting machine for an underlap start signal and a disk for the proximity sensor 25 are provided.
The periodic signals S5 and S6 are sent from the proximity sensor 27 for the overlap start signal and the disk 28 for the proximity sensor 27 to the mover position control computer 23.

.., 4-n are pattern guide point movers disposed on the holding member 3 and have a built-in linear pulse motor, and are controlled in position by excitation of a mover drive coil. 20
-1, 20-2,..., 20-n is a magnet for the position detecting sensor of the moving element, 19 is a magnetostrictive absolute sensor probe for detecting the position of the moving element, 19a is a sensor amplifier, and 19b is an output signal S1 of the sensor amplifier 19a. , 21-2,..., 21-n are pulse motor drive circuits, and mover drive coil excitation signals S4-1, S4-2 of the linear pulse motor. , ... S4-n is replaced with each of the movers 4-1, 4-2, ...
4-n, positioning is performed.

The mover positioning control computer 23 stores the position information and the mover position detection signal S2 of the stored pattern data of the movers 4-1, 4-2,..., 4-n and the cycle of the main shaft of the knitting machine. signal
Generates positioning commands S31, S3-2,... S3-n for the movers 4-1, 4-2,..., 4-n synchronized with S5, S6, and generates pulse motor drive circuits 21-1, 21-2. ,..., Based on the signal transmitted from 21-n, each guide point 5a-1, 5a-2,. The position is controlled according to the data.

Known methods of controlling the position of the pulse motor include:
There is a method of preventing loss of synchronism at the time of rising and guaranteeing positioning to a target position by generating pulses of slow-up and slow-down. However, this slow-up / slow-down method cannot guarantee 100% against load fluctuations and external noise even if the safety factor is increased.

Therefore, in the present embodiment, positioning is reliably performed in a short time, and a control method thereof will be described in detail with reference to FIGS.

FIG. 6 shows the relationship between the output signal of the magnetostrictive absolute sensor and the poles of the stator 18. In the present embodiment, the pitch of the poles of the stator 18 corresponds to 4 gauges, and the positioning positions thereof are four types of GA1, GA2, GA3, and GA4.

In the present embodiment, the position detection circuit is designed to perform position detection in units of 1/8 of one gauge movement (1.411 mm) from GA1 to GA2. As a result of performing span adjustment of the knitting width of the holding member 3 so that the output signal of the magnetostrictive absolute sensor matches the pole pitch of the stator 18 and performing positioning, the relationship shown in FIG. 6 was obtained.

Position detection value is ^{binary, S2-0 (2 0), S2-1} (2 1),
S2-2 (2 ² ), S2-3 (2 ³ )..., And although S2-4 and above are omitted, they are detected as 16-bit values. Therefore, as the guide address, the unit of S2-3 (2 ³ ) is the guide address detection value of the guide point (moving element). The following three bits S2-0, S2-1, and S2-2 are movement information necessary for positioning control of the linear pulse motor.

FIG. 7 shows the relationship between the position control parameters of the linear pulse motor. Pc is the position detection value of the mover 4, S2 is the excitation signal of the mover drive coil 17 of the linear pulse motor,
i0, i1, i2, i3, i4, i5, i6, i7 are the exciting current parameters of the moving element driving coil 17, and ΔP0, ΔP1 are 1 of the linear pulse motor.
Shows the amount of pulse movement. ΔP0 is the movement amount of 1-2 phase excitation, Δ
P1 is the movement amount of one-phase excitation, Sn on the horizontal axis is the number of times of position detection sampling, and in this embodiment, the sampling period is 1.6 msec. ts indicates time (msec). Δf represents the speed of the moving element 4 and represents the amount of change in the detected value in one sampling cycle. d0, d1, d2 indicate control parameters indicating the distance to the positioning target value. Δd indicates the parameters of the position detection position and the tolerance of the moving coil drive coil excitation position of the linear pulse motor. Δd is important as a step-out prevention parameter, and the detection value is Δd ≦ 12. Because Δd> 16
In this case, a step-out state occurs as is well known, so that the safety coefficient is set to Δd ≦ 12 in the embodiment.

An embodiment of each parameter and position control method will be described below.

The positioning time of the mover synchronized with the rotation speed of the knitting machine from 400 rpm to 450 rpm is within 50 msec for underlap positioning and within 18 msec for overlap positioning, and there is a slight variation in the allowable amount depending on the number of holding members. However, reliable positioning must be guaranteed in a short time.

The wrapping illustrated in FIG. 7 indicates the movement amount of 12 gauge, the positioning starts by the underlap start signal, and the rising of the start dash firstly sets the current of i7, i6 to the full performance of the driving circuit, thereby increasing the rising time. Be the shortest. In the acceleration method, when the position detection value approaches the difference Δd = 4 from the excitation position, ΔP1 = 8 is added to move the excitation position. At that time, Δd = 12. However, the excitation position is moved after the detection position of the moving element approaches Δd = 4, and the operation is repeated until the detection position sequentially reaches the target position. This method shows the shortest rise that matches the time constant of the inertia of the mover. This control is performed at a position detection sampling period of 1.6 msec.

Next, control parameters and a control method for stopping at the target value will be described. As described above, the stop control starts from the time when the position of the moving element drive coil excitation signal S2 of the linear pulse motor reaches the target position. At the time when S2 reaches the target, the moving element satisfies Δd ≦ 12. 1.5 from target position
The moving speed Δf at that time is located at a position separated by the gauge, and is obtained. And d0, d1, which are preset by the value of Δf
The excitation control of the moving drive coil shown in FIG. 7 is performed as follows according to the excitation currents of d2 and i1, i2, i3.

First, when approaching the position of d2 with respect to the target value, the excitation position is returned by ΔP1 to excite one gauge before the target value. The exciting current at this time is set to 13. That is, it is a braking brake operation for stopping at the target position. Next, when approaching the position of d1, the excitation position is brought closer to the target position by ΔP0. The exciting current at this time is i2. Further, when the excitation is advanced by ΔP0 when approaching the position of d0, the excitation target is set as the positioning target, and the excitation current at this time is i1.

In the above control method, Δf and d0, d1, d2, i1, i2, i3
By optimally setting the above parameters, it is possible to stop at the target position in the shortest time. i0 is the excitation current after the stop, and selects a current value corresponding to the stop holding torque.

In the method of this embodiment, the position detection position of the mover and the excitation position of the mover drive coil, which is the command value, are always controlled at a sampling cycle of 1.6 msec for position detection, which is the biggest problem of the linear pulse motor. This is a method of always controlling to prevent key adjustment and enabling positioning in the shortest time.

The control parameters can be adapted to all the moving elements by setting the optimum value once if the moving elements have the same structure.

If the variation of the thrust is minimized by the structure of the linear pulse motor shown in FIG. 4 described above and the mover is made thinner, lighter, and has a higher thrust, further improvement in performance can be expected.

Next, as a control method for each of the drive coils of the pattern guide point movers 4-1, 4-2,..., 4-n arranged on the holding member 3, power is supplied in a non-contact manner without using a cable. An embodiment for transmitting a control signal will be described. This eliminates the connection cable for the mover and solves the problems such as the limitation of the movement range, the life of the cable, and the problem of mounting, and realizes free patterning.

FIG. 8 shows an example of a patterning device in which the connection cable is eliminated. The same reference numerals are used for structural parts common to those in FIG. 3, and the description thereof is omitted. Will be described.

A ferrite plate 40 fixed to the holding member 3 and an induction coil 34 fixed to the ferrite plate 40 in parallel in the longitudinal direction.
And a power receiving coil 35 provided above the movable element 4 in correspondence with the induction wire coil 34, a rectifier circuit 36, a drive circuit 37, and a signal detection circuit 38 are assembled to form a unit.

Next, a control method using the above device will be described with reference to FIGS.
This will be described with reference to FIG. 10 and FIG. It should be noted that FIG.
The description of the control method common to that described in (1) is omitted, and only the control method of the additional part will be described.

.., 4-n generated by the moving element positioning control computer 23 of FIG.
, S3-2,..., S3-n are input to a signal conversion circuit 32 and converted into a serial pulse signal S10.
Entered in 3. The power supply oscillating section 33 outputs a power signal S11 modulated by the positioning command serial pulse signal S10 of the moving element with respect to the oscillation frequency, and excites the induction wire coil 34 mounted on the holding member 3.

The moving elements 4-1, 4-2,..., 4-n are power receiving coils 35-1, 3-3.
5-2,..., 35-n and the induction wire coil 34 make it possible to obtain induced power and simultaneously receive a control signal.

A method of controlling the moving elements 4-1, 4-2,..., 4-n will be described with reference to FIG. The induced power S12 generated in the power receiving coil 35 is input to the control signal detection circuit 38 and the rectifier circuit 36, and the control signal S13 and the DC voltage signal S14 are input to the linear pulse motor drive circuit 37, and the control signals S15 and S16 The mover driving coils 17a-1 and 17a-2 are excited. Thus, the positioning of each moving element is controlled in the same manner as described above.

FIG. 11 shows an example of a signal waveform of the power signal S11 pulse-width-modulated by the basic oscillation signal CL of the power supply oscillation unit 33 and the positioning command serial pulse signal S10.

In the above embodiment, the embodiment in which the control signal and the power supply are performed at the same time has been described. In addition, a method in which the power supply and the control signal transmission are divided into two systems as described later is also conceivable. In any case, the greater the number of movers arranged on the same holding member, the greater the effect of eliminating the connection cable. However, the addition of the power receiving coil 35, the power receiving coil ferrite core 39, the control signal detection circuit 38, the rectifier circuit 36, and the linear pulse motor drive circuit 37 increases the weight of the moving element. As a result, weight reduction, thickness reduction, high thrust, etc. are realized, and practical use is achieved.

In addition to the above non-contact type, a contact type in which an energized portion is provided in a part of the holding member and a signal or electric power is supplied by bringing a slip ring provided on the movable member into contact with the energized portion. It is also possible to carry out positioning control by control.

FIG. 12 shows an embodiment in which the poles of the mover 4 are arranged opposite to the poles on one of the upper and lower sides (the upper side in the figure) of the stator 18 provided on the holding member (not shown) in the knitting width direction. Is shown.

In the figure, 15 is a field magnet, 16a-1, 16a-
Reference numeral 2 denotes a pole of the moving element, 17a-1 and 17a-2 are moving element driving coils, and a moving roller 41 is provided before and after the two poles 16a-1 and 16a-2.
The moving roller 41 is mounted on the stator 18 formed to also serve as a guide, and is provided so as to be movable in the knitting width direction. Reference numeral 34 denotes an induction wire coil, and reference numeral 35 denotes a power receiving coil, which can obtain an induced power by magnetic coupling, thereby supplying necessary power. This is the same as in the embodiment of FIG.

FIG. 12 shows a case in which a microcomputer or a logic circuit is mounted on the movable element 4 to control the movable element 4 by reducing the control signal of the induction coil 34 for position correction or the like. ing. Therefore, a microcomputer chip is attached to the substrate PB in the drawing.

That is, in the embodiment of the control method described above, the movement amount per pulse of the linear pulse motor is determined by the gauge pitch (1.
411 nm), but the control is performed by setting the stator processing accuracy, knitting needle pitch processing accuracy, pitch error correction,
In order to solve the problems such as simplicity of positioning and speeding up, the amount of movement per pulse is set to a fraction of, for example, 1/4 of the above-mentioned 1.411 mm for one pulse, and is further reduced by 1-
It is desirable to adopt a two-phase excitation method and to select a control method for correcting the position and temperature of the moving element and each guide position in units of 0.176 mm per pulse.

However, when the movement is set to one-gauge multiple-pulse movement, the amount of information transmitted by the guide wire is quadrupled, and at the same time, the processing capability of the mover positioning control computer 23 is quadrupled or more.
In addition, the carrier frequency of the guide wire is four times or more as high, and the mounting surface and the processing capacity are increased in cost, making it difficult to realize.

Therefore, it is preferable to set the number of pulses for one gauge movement to a plurality of pulses, for example, 4 pulses or 8 pulses as in the embodiment, and then adopt the following control method.

First, in order to greatly reduce the amount of information transmitted by the control vibration guide line, a microcomputer is mounted on the movable member 4 to perform positioning control individually. Second, the power supply induction line and the control signal induction line are provided in two systems so that the resonance frequency can be set to the inductance of the power supply induction line without being restricted by the information amount of the control signal.

By adopting this control method, the processing capacity is dispersed, and the load on the moving element positioning control computer 23 is greatly reduced.

FIG. 13 shows an example of a control configuration by a computer mounted on the moving element.

A power receiving coil 35 provided corresponding to the power supply induction wire coil 34 fixed to the holding member and a reception coil provided corresponding to the control signal induction wire coil 52 fixed to the same holding member as the power supply induction wire 53, output signal S21 of receiving coil 35
Are input to the power receiving unit 55, and the control power supply V5 and the power supply Vc for the pulse motor drive circuit 58 are output. Also, the output signal S21 of the receiving coil 53 is shaped and the control signal synchronization signal CL
The output signal S22 of the control signal receiving coil 53 that outputs the control signal is input to the control signal receiving unit 56 and shaped into a serial control signal S23.

FIG. 14 shows an example of each signal. The serial control signal S23 is output as a combination of 0 and 1 in response to the control signal synchronization signal CL. The signals CL and S23 are input to the positioning control microcomputer unit 57, and receive information necessary for positioning each mover sent from the mover positioning control computer 23 for pattern control,
The positioning control microcomputer unit 57 develops the excitation signal S24 and the current signal S25 of the linear pulse motor and outputs them to the pulse motor drive circuit 58, and outputs the A-phase excitation signal S15 and the B-phase excitation signal S16.
To perform positioning of the pulse motor.

FIG. 15 shows an embodiment of the serial control signal S23 transmitted by the control signal induction coil 52. Although the method of transmitting and receiving the serial signal is publicly known and omitted, the signal content will be described.

The control code shown in the lower column of FIG. 15 is a control command for the moving element and is common to all moving elements.

The control code is composed of control data transmission and a control start command.
They can be broadly classified into types. The control code will be briefly described.

05 ^H command value transmission, the positioning movement amount, direction, and the presence or absence of overlapping are transmitted to each moving element by pattern data. Transmission is performed once per rotation.

01 ^H Underlap positioning start, command value transmission command,
Execute Start synchronization signal.

02 Executes ^H overlap positioning start and command value transmission command. Start synchronization signal.

06 Mainly used for ^H reset command value transmission and recovery operation after error occurrence. A movement amount to be returned is instructed.

03 ^H return positioning start, execute command according to return command value.

04 ^H- span adjustment start, pulse motor excitation control start command for absolute position detection value and pulse motor stator position adjustment. The current position of each mover is updated.

07 ^H correction value transmission, transmission of correction value to each mobile unit. The home position offset value is corrected, and the positioning position is corrected.

08 ^H Transmits control data and control parameters.

0F ^H to 51 ^H transmission positioning parameters, time of positioning control of the relative movement pulses, and transmits the current value.

60 ^H through 62 ^H mover current position transmitted, updates the mover internal data performs transmission of absolute value detected.

By installing a microcomputer in the mover positioning control unit as described above, processing can be decentralized considering support for multiple pulses, position correction function and cordless control, and support for multiple movers. It can be realized, can solve the problem, and can respond to future multi-function.

FIG. 16 is a block diagram of the control configuration of the embodiment in which the power supply induction coil 34 and the control signal induction coil 52 are divided into two systems.

As compared with FIG. 9 described above, the excitation oscillating section of the induction coil 34 is divided into a control signal induction coil excitation oscillating section 51 and a power supply induction coil excitation oscillating section 50, which are output by the mover positioning control computer 23. The control signal S19 is input to the oscillating unit 51, and an oscillating unit output signal S20 is output.
The control signal is supplied to the induction wire coil 52. Also control signal
S17 is input to the power supply oscillating unit 50, and the oscillating unit output S18 output by the ON / OFF signal is supplied to the power supply unit induction coil 34.

.., 4-n are provided with microcomputer position control boards PB-1, PB-2,..., PB-n. In addition, a temperature detection device 60 and a correction operation pulse 61 for the holding member where the mover is mounted
The S30 and the correction operation signal S31 are input to the slider positioning control computer 23, and for the above-described slider correction function, the correction of the position caused by the temperature change and the adjustment for each slider individually, and the command of the correction value are performed. The patterning positioning control which is a condition is realized.

FIG. 17 shows an example of a patterning device in which a guide bar having a plurality of guide points is attached to a movable element that moves and is positioned and controlled as described above.

The basic structure of this embodiment is the same as that of the embodiment shown in FIG. 3, and the same components are denoted by the same reference numerals and detailed description thereof is omitted, but a linear pulse motor is provided on a holding member 3 as a guide path. , And a plurality of movers 4 (4-1, 4-2, 4-3, 4-4,...) Are held on the same route, and poles 16a and 16b of each mover are held as a guide route. The stator 18 provided on the member 3 is disposed so as to face the poles on both sides of the stator 18, and each is provided so as to be individually movable in the knitting width direction. Then, a plurality of guide points 5 (5
The guide bar 70 (70-70) provided with -1,5-2,5-3 ...
1, 70-2, 70-3 ...) are attached by screwing means 71. The guide point 5 is attached to a desired position of the guide bar 70 by a screw 72.

The moving element 4 has a length of the guide bar 70, that is,
Although it depends on the width of the knitting machine, the guide bar 70 is held at at least two positions near the ends of at least one sheet. Depending on the length of the guide bar 70, the movable member 4 for holding the guide bar 70 can be provided at several places at appropriate intervals.

When a plurality of guide bars 70 are displaced in the front-rear direction of the knitting machine as in this embodiment, and are provided so as to be movable by the movers, the displacement of each guide bar 70 is easily and individually. It will be possible to control at high speed. In addition, since a plurality of guide bars can be individually displaceably provided in the same guide route, a margin is provided in a space for installing the guide bars, and a configuration in which a large number of guide bars are arranged side by side can be easily realized. .

In FIG. 17, the signal cable 7 is connected between the linear pulse motor drive circuit of the control device and the moving element drive coil.
Alternatively, it can be implemented such that it is excluded as shown in FIG. 12 and controlled by wireless control. In this case, an induction wire coil, a power receiving coil and a current circuit
It is necessary to provide a unit in which a drive circuit and a signal detection circuit are incorporated. In addition, as shown in FIG. 12, it is also possible to arrange the embodiment in such a manner that the poles of the mover are opposed to the poles on one side of the stator.

Further, also in this embodiment, the number of pulses for one gauge movement can be set to one pulse, a plurality of pulses can be set, and the amount of information carried on the control signal guide line can be greatly reduced. A computer may be mounted to perform positioning control individually, or the system may be configured into two systems of a power supply guide line and a control signal guide line.

[Industrial Applicability] According to the patterning device of the warp knitting machine of the present invention, the load on the moving element bearing can be reduced without reducing the thrust of the linear pulse motor used, and the thickness of the motor can be reduced. Therefore, it is possible to increase the number of holding members corresponding to the yarn guide reed of the conventional machine, and it is also possible to easily adjust the assembly, the alignment with the knitting needle, and the like.

Further, since the magnetic paths of the magnets are arranged in the same direction, the leakage flux can be reduced and the thrust can be made uniform, so that the guide points can be stably positioned.

According to the first control method of the patterning device of the present invention, since the positioning information of the moving element is logically incorporated in the circuit as the moving condition of the positioning control command, it is not necessary to return to the reference position even when restarting after a power failure. In addition, step-out due to various external noises is eliminated, and malfunction does not occur. In addition, by controlling the excitation position, the excitation current, and the excitation switching timing using parameters, reliable positioning can be guaranteed in a short time.

In addition, by eliminating the signal cable for connecting to the mover and performing positioning control of the mover by wireless control, there is no restriction on the range of movement of the mover in the pattern creation, so the pattern can be freely set to the full width of the knitting machine. It is possible to run yarn, and it is possible to knit a lace ground with a new pattern configuration that could not be done conventionally. Further, the size and weight of the device can be reduced and high thrust can be realized, which can contribute to speeding up.

Furthermore, by mounting a microcomputer or a logic circuit on the mover to reduce the control signal to the induction coil for position correction, etc., the mover can be positioned without being restricted by the information amount of the control signal. It can be controlled, and the load on the moving element positioning control computer can be reduced, making it more practical.

As described above, according to the patterning device and the control method of the warp knitting machine of the present invention, the problem (1) can be solved, and the patterning knitting by the movement control of the movable member provided with the guide point using the linear pulse motor is performed. Make it easily possible.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Norimasa Nosaka 1-27-33 Kamikita, Fukui-shi, Fukui Japan Meyer Corporation (56) References JP-A-6-49754 (JP, A) Japanese Patent Publication 60-55852 (JP, A) Japanese Patent Publication No. 59-1059 (JP, B2) Japanese Patent Publication No. 58-44783 (JP, B2) Japanese Patent Publication No. 2-502297 (JP, A) (58) Int.Cl. ⁶ , DB name) D04B 23/00-39/08

Claims (7)

(57) [Claims] 1. A stator of a linear pulse motor is incorporated on a holding member as a guide path, a plurality of movers are provided at an arbitrary interval on the same path, and a part of the movers is configured as a guide point, Alternatively, in a patterning device of a warp knitting machine in which a guide bar is attached to the mover, a configuration is provided in which the poles of the mover are arranged so as to face poles on both sides of the stator. Patterning device. 2. A mover drive coil having a pole of a mover, an NS direction of a field magnet and a magnetic field of a stator so that magnetic paths of two field magnets opposed to poles of a stator are in the same direction. The patterning device for a warp knitting machine according to claim 1, wherein the device is configured to combine tooth shapes. 3. A linear pulse motor stator is mounted on a holding member as a guide path, a plurality of movers are provided at an arbitrary interval on the same path, and a part of the movers is configured as a guide point. Or, a control method of a patterning device of a warp knitting machine in which a guide bar is attached to the mover, wherein a position sensor is provided in relation to a pole of the stator and a pole of the mover, and one pulse is received in response to a positioning command. A control method of a patterning device for performing a positioning / acceleration control of a linear motor by generating a next positioning command pulse after confirming by a position sensor that a pole of a moving element has moved in units. 4. A linear pulse motor stator is mounted on a holding member as a guide path, a plurality of movers are provided at an arbitrary interval on the same path, and a part of the movers is configured as a guide point. Or, a method of controlling a patterning device of a warp knitting machine in which a guide bar is attached to the mover, the magnetostrictive absolute position detecting means having a span adjusted in accordance with a pole pitch of a stator arranged on a holding member. A method for controlling a patterning device provided to control a relationship between a position detected value by said position detecting means and a moving element drive coil excitation. 5. A linear pulse motor stator is mounted on a holding member as a guide path, a plurality of movers are provided at arbitrary intervals on the same path, and a part of the movers is configured as a guide point, Or, a method of controlling a patterning device of a warp knitting machine in which a guide bar is attached to the mover, wherein the current control of the mover drive coil and the excitation switching timing are obtained from the detected position value to obtain optimum positioning acceleration / deceleration. A method for controlling a patterning device, wherein the positioning control of the moving element is performed by performing the control. 6. A method in which a stator of a linear pulse motor is incorporated on a holding member as a guide path, a plurality of movers are provided at arbitrary intervals on the same path, and a part of the movers is configured as a guide point, Alternatively, a method for controlling a patterning device of a warp knitting machine in which a guide bar is attached to the movable element, wherein power supply to the movable element and transmission of a control signal are provided on a power receiving coil and a holding member of the movable element. In a non-contact method using magnetic coupling with the induction wire coil or a contact part that supplies a signal or power by contacting a slip ring with a part of the holding member, A control method of a patterning device for performing positioning control of a moving element. 7. A stationary member of a linear pulse motor is mounted on a holding member as a guide path, a plurality of movers are provided at an arbitrary interval on the same path, and a part of the movers is configured as a guide point. Or, a method of controlling a patterning device of a warp knitting machine in which a guide bar is attached to the mover, wherein a microcomputer or a logic circuit is mounted on the mover to control an induction wire coil for position correction or the like. A control method of a patterning device for controlling a moving element by reducing a signal amount.