JPH10168719A - Motion control unit for knitting element in warp knitting machine and control of the unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject control unit and method for controlling it, enabling electronic control of the change in knitting conditions during the halt or operation of a warp knitting machine smoothly by rendering the output capacity of a displacement-imparting means smaller. SOLUTION: This control unit, which is equipped with knitting elements borne by a relevant means 3 and a displacement-imparting means 7a to impart displacement necessary for knitting motion, is so designed that the displacement- imparting means 7a is connected to the bearing means 3 without being mediated by a drive shaft so as to be electronically controllable and displacement corresponding to any knitting condition is synchronously imparted on the bearing means 3 for the respective knitting elements based on the signal from an electronic control section; in this case, the capacity of the displacement-imparting means 7a can be rendered smaller as a result of omitting a drive shaft midway of imparting displacement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for controlling the motion of a knitting element in a warp knitting machine. Alternatively, electronic control can be performed at any time during knitting.

[0002]

2. Description of the Related Art Conventionally, in a warp knitting machine, particularly in a Raschel machine, a guide needle (hereinafter abbreviated as a guide),
Generally, a knitting needle (hereinafter abbreviated as needle), a stitch comb, and a trick plate are provided, and a knitting yarn guided from the guide to the needle is knitted as a knitted fabric and formed by a knitting assisting action of the stitch comb. The finished knitted fabric is wound up more smoothly on the trick plate.

[0003] On the other hand, the structure of the knitting element is, for example, in a race raschel machine, of the knitting yarn, the ground yarn responsible for the formation of the ground structure is a guide bar called a ground reed, and the patterned yarn responsible for the formation of the pattern structure is the pattern reed. And are passed through the guide bars, respectively.

Generally, the guide bar performs overwrapping (stitch formation movement) and underlapping (insertion movement) by shogging operation from a handle drive mechanism such as a drum in synchronization with the elevating movement of the needle. In addition to the movement, a so-called swing (oscillating movement) is made in the direction perpendicular to the needle rows, and the guides attached to the respective guide bars pass between the needle rows, so that the knitting yarn is guided to the correct needle position. Action is given. As for this swing, the needle may perform a relative up-and-down movement instead of the guide, or the guide and the needle may both swing oppositely.

In any case, the displacement of these needles, guides, stitch combs, etc. is transmitted to each needle bar, guide bar holding member, stitch comb bar, etc. via a cam provided on the main shaft via intermediate transmission means. The drive displacement of each knitting element is determined as the swing width of the guide bar, the amount of the up / down stroke of the needle bar, etc., based on the knitting curve determined by the number of reeds, the required number of overlap reeds, and the like.

As a result, the ground yarn guided by the ground reed is
Only a predetermined number of the needles can be wound around the needle by overlapping, and a stitch (loop) can be formed. However, a ground thread formed by another ground reed cannot be stitched, and only a simple insertion action is possible.

[0007] On the other hand, with regard to the pattern yarn guided by the pattern reed, when the needle is lowered and the underlap is performed, for the pattern reed located at the rear side of the knitting machine, the guide is moved after the needle is raised. The time required to pass through the gap is very short, and the timing of underlapping for the pattern reed arranged behind the knitting machine is not sufficient, so the amount of underlap is naturally limited by the arrangement position of the pattern reed. become.

In the conventional warp knitting machine as described above, the change in the timing initially set is achieved by changing the drive cam on the main shaft, or by driving a swing device such as a needle or a guide or a swing amount. This was done by changing the connection position of the lever arm of the intermediate connection means provided between the knitting elements rather than the part, but this replacement and adjustment work requires considerable time, and some experience in adjustment Needed.

Accordingly, the present applicant has previously disclosed in Japanese Patent Laid-Open No. 2-210.
No. 047 proposes a warp knitting machine. The content of the control signal is based on a control shaft based on a synchronizing signal from a separately provided driving main shaft, with a supporting shaft of a supporting means for supporting each knitting element such as a needle, a guide and the like as a driving shaft, which can be directly driven by a servomotor. Is sent from the controller to the servomotor to perform the individual synchronous rotation of each knitting element.

[0010]

However, in the above-described warp knitting machine, each knitting element is supported by an arm or the like having a support shaft as a fulcrum, and the support shaft is configured as a drive shaft of a servomotor. A large-capacity motor is required for driving, and the response of the mechanical operation is inferior, and the accuracy of the motion displacement is not reliable due to the occurrence of backlash due to gears or the like at the connecting portion.

The present invention solves the above-mentioned inconvenience, and enables knitting conditions to be electronically controlled while the knitting machine is stopped or at the time of knitting, and a warp knitting capable of smoothly performing a motion control operation. It is an object of the present invention to provide a motion control device of each knitting element in a machine and a control method thereof.

[0012]

According to a first aspect of the present invention, a knitting element supported by a support means is provided with a displacement by a displacement applying means for applying a displacement necessary for knitting motion. In the warp knitting machine having the above structure, the displacement applying means is connected to the support means without using the drive shaft, and the displacement applying means is electronically controllable, based on a signal from the electronic control unit to the displacement applying means. And a knitting element movement control device characterized in that knitting conditions can be changed together with a normal displacement application.

According to this motion control device, the load on the portion to which the displacement is applied can be reduced, and as a result, the responsiveness of the machine operation can be improved, which leads to an increase in the rotational speed and the capacity of the displacement applying means. Since the size can be reduced, the knitting elements can be divided and moved individually. Of course, the knitting conditions can be changed freely by presetting the knitting conditions at the time of stop or during operation.

It is preferable that the displacement applying means employs at least one of a servomotor, a linear motor, and a piezoelectric element so that the displacement, time, speed, and the like can be changed.

According to a third aspect of the present invention, in the motion control device, the desired knitting generated for the displacement applying means based on a signal from a synchronous signal generator or a synchronous signal generated in an electronic control unit. Send the displacement signal corresponding to the curve,
It is characterized by a control method in which a plurality of different knitting elements are knitted and driven in synchronization. Accordingly, it is possible to provide a knitting organization in which the timing of each knitting element can be freely changed, and which can easily cope with various changes in the ground organization and diversify the pattern expression.

According to a second aspect of the present invention, there is provided a motion control device for a knitting element.
In a warp knitting machine configured to apply a displacement to a knitting element supported by a bearing means by a displacement applying means for applying a displacement necessary for knitting motion, a displacement between the displacement applying means and the bearing means At least one electronically controllable knitting condition changing means is interposed, and knitting conditions can be changed based on a signal from the electronic control unit.

According to the present invention, the movement timing of the knitting element is changed during the operation as well as at the time of stopping, and the necessary data is automatically or electronically transmitted based on the knitting conditions input in advance such as the displacement width and the displacement position. The knitting conditions can be easily changed manually by inputting to the control unit, and a knitting curve corresponding to various knittings is given to each knitting element in one warp knitting machine in real time.

As the knitting condition changing means, it is preferable to employ at least one of a servo motor, a linear motor, and a piezoelectric element capable of changing and controlling a displacement, a time, a speed and the like.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the first invention will be described with reference to the drawings.

FIG. 1 is a side view, partially in section, of a warp knitting machine to which an embodiment of the motion control device for knitting elements of the present invention is applied. In the figure, 1 is a guide block for holding a guide 1a, 2 is a guide bar, 3 is a guide hanger as a support means, and a guide bar 2 in which the guide block 1 is attached with screws or the like is used in this embodiment. In this case, six rows are attached to the guide hanger 3.

The guide hanger 3 is screwed and fixed to a hanger drive shaft 4 for vertically moving the hanger, that is, to one end of a hanger drive shaft 4 which is slidably inserted into a slide metal 5 up and down. . The other end of the hanger drive shaft 4 is connected via a coupling 6 to an output shaft 7a of a linear motor 7 as a displacement applying means. 7b is an absolute encoder.

Further, a part of a support member 5a having a U-shaped cross section provided integrally with the slide metal 5 includes:
One end of the second hanger drive shaft 10 is screwed and fixed. The hanger drive shaft 10 is supported by being slidably fitted in a slide metal 9 provided integrally with a support member 9a having a F-shaped cross section in a longitudinal direction. Are screwed and fixed to traverses 8 provided on left and right machine frames (not shown).

The other end of the hanger drive shaft 10 is connected to a part of a support member 9a via a coupling 11 and an output shaft 12 of a linear motor 12 as a displacement applying means.
a.

Reference numeral 13 denotes a drop plate, and FIG. 2 shows a front view of the portion.

A drop plate 13 is attached to a drop plate holder 14, and the drop plate holder 14 is attached to a slide shaft 16 slidably fitted to a slide metal 15.
Reference numeral 17 denotes a linear motor as displacement applying means. The linear motor 17 is screwed and fixed to the guide hanger 3, and a slide shaft 16 connected to the drop plate holder 14 and an output shaft 17 a are connected by a coupling 18. 19 is an absolute encoder.

Reference numeral 20 denotes a needle block for holding the needle 20a, and FIG. 3 is a front view of the needle block.

The needle block 20 includes the needle bar 2
1, the number corresponding to the length of the knitting width is aligned and attached. Reference numeral 22 denotes a trick plate holder which holds a trick plate 23 at an upper end and a linear motor 24 as displacement applying means at a lower end. A spline shaft 24a, which is an output shaft of the linear motor 24, is connected via a coupling 26 to a slide shaft 25 holding a needle bar 21 as a support means at the upper end. It is slidably fitted in a sliding part 22a provided in the part.

The above-described linear motor 24 includes the electromagnetic coil 2
7a, a mover 27b, a stator 27c, and ball splines 28a and 28b. The absolute encoder 2 is provided at the lower end of the spline shaft 24a.
9 is attached to the linear motor 24.

Reference numeral 30 denotes a stitch comb block for holding the stitch comb 30a, and FIG.

The stitch comb blocks 30 are attached to a stitch comb bar 31 as a bearing means in a number corresponding to the length of the knitting width. Reference numeral 32 denotes a bearing metal, which is screwed and fixed to the machine base 33 at the lower end. The support metal 32 is bifurcated at the upper part, and a linear motor 3 as a means for applying displacement to the stitch comb 30a and the trick plate 23 is provided at one portion.
The stitch comb drive shaft 38 and the trick plate drive shaft 39 are slidably fitted to slide metals 36 and 37 provided integrally with the other portions, respectively.

A stitch comb bar 31 is screwed to one end of the stitch comb drive shaft 38, and is connected to the output shaft 34a of the linear motor 34 via a coupling 40 at the other end.

A sliding portion 22a of the trick plate holder 22 is fixed to one end of the trick plate drive shaft 39, and is connected to an output shaft 35a of the linear motor 35 via a coupling 41 at the other end. . 5
Reference numeral 0 denotes a winding roll group for winding the dough.

FIGS. 5 and 6 show a driving portion of a tongue 51a which is arranged close to the needle 20a and forms a compound needle (composite needle).

The tongue 51a is formed as a tongue lead 51 for every several tongs.
Are provided in parallel. The tongue lead 51 is screwed and fixed to a tongue bar 52 as a support means, and the tongue bar 52 is attached to one end (upper end) of a slide shaft 53. The slide shaft 53 is vertically slidably fitted into a slide portion 22 b provided integrally with the trick plate holder 22, and has a ball screw which is an output shaft of a motor 55 as a displacement applying means at the other end. 56 via a coupling 54.

The motor 55 is a hollow-shaft servomotor, and includes a rotor 57 on the inner ring side and a stator 58 on the outer ring side. The rotation of the rotor 57 causes the ball screw 56 to be displaced up and down. 59 is an absolute encoder. In the above embodiment, a linear motor or a hollow shaft servomotor is used as the motor in the displacement applying means. However, a motor converted to linear displacement or another motor indirectly converted to linear displacement may be used. Although it is possible to use air, or any other electronically controllable device, it is particularly advantageous to use the above-described linear motor or servomotor for electronic control.

The configuration of the knitting part in the motion control device for each knitting element of the present invention has been described above. Next, the control method will be described with reference to a control block diagram including the configuration of the control part shown in FIG. It will be explained together.

In FIG. 7, reference numeral 61 denotes an electronic control unit which constitutes an electronic control unit having a built-in CPU board. Reference numeral 62 denotes a motor for generating a reference pulse, which is a synchronous movement of all the knitting elements. Will be the standard. 63 is an absolute encoder for generating a reference pulse,
It is connected to a motor 62 via a coupling 62a and is connected to an electronic control unit 61. 64 is a speed setting unit, 65 is a machine operation control unit, and 66 is a timing data input unit, each of which is separately connected to the electronic control unit 61.

Reference numeral 67 denotes a unit for generating a pulse for a needle, 68 denotes a stitch comb, 69 denotes a tong, 70 denotes a drop plate, 71 denotes a trick plate, 72 denotes a vertical drive of a guide hanger, and 73 denotes a guide hanger. These are pulse generation units for front-rear drive. N-1 to N-n,
S-1 to Sn, T-1 to Tn, F-1 to Fn, F
R-1 to FR-n, GU-1 to GU-n, GS-1 to G
Sn is a needle, stitch comb, tong, drop plate,
These are pulse conversion units for trick plates, guide hangers up and down, and guide hangers before and after, and determine the number of pulses corresponding to each knitting element. The unit requires the number of motors provided for each knitting element. If the number of support bars of the knitting element is one, at least two or three are required. When the support bar is divided, the number increases in accordance with the number of divisions. However, due to the mass of each knitting element, a small capacity of an individual motor is sufficient. Each of the pulse conversion units is individually connected to each of the pulse generation units and sends a pulse corresponding to the knitting timing to the servo driver units 80 to 86.

The servo driver units 80 to 86
A drive control signal is sent to an individual drive motor provided in each knitting element.

Next, a specific control method for knitting will be described. First, in the timing data input unit 66, a knitting curve determined in advance for the back and forth movement of the stitch comb and the ascending and descending movement of the dropping plate, such as the stroke movement of the needle and the tongue based on the knitting structure and the handle structure, and the swing movement of the guide hanger. Or enter data based on
Input can be made from an external storage medium. Electronic control unit 61
In this case, one stroke of the needle bar 21 is set as one rotation, and one stroke of the stitch comb bar 31 is set.
With respect to one stroke of the tong bar 52, one stroke of the drop plate 13, one stroke of the trick plate 23, and one stroke of the guide hanger 3, the reference position signal S1 generated by the absolute encoder 63 is received.
The desired knitting timing can be set by synchronizing the pulse generation timings of the pulse generation units 67 to 73. The speed setting unit 64 has a function of setting the knitting speed of the knitting machine, and the machine operation control unit 65 has a function of inputting an external signal including a stop of the operation of the machine.

Necessary data from each unit to which the above conditions are input are stored in the memory of the electronic control unit 61,
Start signal S2 input to operation control unit 65
Enters the electronic control unit 61, the pulse generation motor 62 starts, the absolute encoder rotates, the angle signal is sent to the electronic control unit 61, the control signal is sent to each of the pulse generation units 67 to 73, and the pulse conversion unit N, S,
Drive signals from T, F, FR, GU, GS via servo driver units 80 to 86 are applied to respective servo motors (including linear motors) 24, 34, 55, 17, 35, 7, 1
2 to perform synchronous operation.

Each of the servo motors 24, 34, 55, 1
7, 35, 7, 12 from the absolute encoders 29, 34b, 59, 19,
When the feedback signals Sf are sent to the pulse conversion units from 35b, 7b and 12b respectively, the correct synchronous operation is continued by the closed loop control, and when the stop signal S3 is sent to the electronic control unit 61, first, the reference pulse generation signal is output. Since the motor 62 is stopped by the stop signal and the absolute encoder 63 is stopped, each servo motor 24, 34, 55, 17, 35, 7, 12 is stopped.

Therefore, automatically when the knitting conditions such as the movement timing, displacement width, and displacement position of each knitting element are input, or by inputting necessary data to the electronic control unit, the motor can be stopped or operated. At any time point, the knitting conditions can be easily changed.

As described above, in the control device of the present invention, the displacement amount of the knitting element and the lapping timing can be freely changed, but a knitting curve diagram of two different knitting models will be specifically described.

FIGS. 8A, 8B, 8C and 8D show a floating Jacquard race Raschel machine with a drop plate,
The knitting timings of needles, tongs, trick plates, and guide hangers of a floating lace Raschel machine without a falling plate are shown. NE-a, T in each figure
O-a, FR-a, and GH-a are the respective timing curves of the former, NE-b, TO-b, FR-b, and GH-b.
Represents the respective timing curves of the latter.

As is clear from the figure, the timing changes from one to the other depends on the model suitable for the product, and the change of the timing from one to the other is performed by the electronic control unit 61 for electronically controlling the displacement applying means connected to each knitting element. By giving the changed information from the timing data input unit 66, it can be implemented instantaneously. The knitting curve is usually called a gang, but can be changed by inputting this number.

During operation, for example, when knitting a course in which the guide bar has a large shock, the knitting timing of only the knitting course can be changed, or information can be given to the timing data input unit 66 or programmed. It is easily possible.

The above knitting elements are not limited to those in a single row corresponding to the machine width of the warp knitting machine, but can be divided into a plurality of parts to separately knit each knitting element corresponding to a plurality of knitting widths. It is possible to knit warp knitted fabrics having an organization and a pattern configuration.

Next, an embodiment of the second invention will be described with reference to the drawings.

FIG. 9 shows an embodiment of a motion control device for a knitting element. FIG. 9 is a side view showing a part of a trick plate constituting one of knitting elements of a warp knitting machine, particularly a Raschel machine, in a cross-sectional view. is there.

In FIG. 9, reference numeral 101 denotes a holding bar to which a trick plate 102 is screwed and fixed, and 103 denotes a trick plate holding metal, which is fitted to a fulcrum shaft 106 of a supporting metal 105 fixed to a machine frame 104. One end of a drive lever 107 of a trick plate is fitted to the fulcrum shaft 106, and a stator 108 of an electronically controllable linear motor is integrally attached to the other end thereof.
On the other hand, the moving element 109 of the linear motor is mounted so as to be displaceable in the direction of the arrow (left and right in FIG. 9).

Reference numeral 110 denotes a driving shaft having both ends rotatably supported by bearings, and is rotated by a driving motor (not shown) as a separately provided driving source. Reference numeral 111 denotes an eccentric cam, and a hollow shaft servomotor 113 is internally fitted to one end of a cylindrical arm 112 which is fitted to the driving shaft 110 and provided integrally with the eccentric cam 111.

The hollow shaft servomotor 113 includes a rotor 114 on the inner ring side and a stator 115 on the outer ring side.
A ball screw 116 generates a linear reciprocating motion by the rotation of the rotor 114. Ball screw 1
One end of 16 is connected via a connecting member 119 to a rod end 118 attached to a part of the moving element 109 via a support shaft 117.

Reference numeral 120 denotes a needle block for holding the needle 120a, 121 denotes a needle bar, and the support rod 1 fitted to a part 103a of the holding metal 103.
The needle 22 is supported so as to be displaceable up and down, and is provided with a vertical movement of the needle by a separately provided motor (not shown). The support rod 122 is connected to the drive lever 107 via a connection rod 123 that is pivotally mounted on a part of the support rod 122, and is provided with a motion corresponding to the trick plate 102 and a vertical motion. The connecting rod 123 is divided at the center in the length direction, and the upper and lower portions thereof are screwed into the connecting member 124 so that the length can be adjusted. Can be adjusted.

FIG. 10 is a side view showing a guide hanger portion of the knitting element. Reference numeral 130 denotes a guide hanger, which is a plurality of rows of guide bars 132 having guide needles 131 and a slide metal 13 having drop plates 133.
4 is attached. The guide hanger 130 is fitted to a support shaft 139 that penetrates through one end of an arm 138 via a support shaft 137 to a holding metal 136 on a traverse 135 that is provided on the upper side in the lateral direction of the knitting machine. On the other hand, the bearing shaft 13
An eccentric lever 143 that is inserted into the support shaft 140 at one end and inserted into the support shaft 142 at the other end of the bracket 141 whose other end is fixed to the traverse 135 is attached to an arm 138 between the shaft 7 and the support shaft 139. Have been. Further, an arm 144 is fitted to the support shaft 139, and the arm 144 is connected to the rod 145 and the support shaft 146. Rod 14
Although not shown in FIG. 5, a displacement generated from the eccentric cam 111 of the drive shaft 110 shown in FIG. Further, the spindle 142 is configured to be able to be given a rotational displacement in the direction of the arrow by an electronically controllable servomotor (not shown).

The above is the configuration of the embodiment of the motion control apparatus according to the second invention. Next, the operation thereof will be described.

The trick plate 102 is initially provided with a reference displacement Ts in the direction of the arrow, which is given as a displacement from the driving shaft 110 for reference rotation, ie, a curve C1 of the basic motion in FIG. On the other hand, the amount of displacement of the ball screw 116 is increased or decreased based on a correction signal from the electronic control unit for the hollow shaft servomotor 113, and the position of the linear motor mover 109 with respect to the drive lever 107 is adjusted. A knitting curve C2 is generated. Therefore, the above-described drive lever 107 and the linear motor (stator 108,
9) and the hollow shaft servomotor 113 and their connection structure constitute knitting condition changing means.

The guide hanger 130 is also initially provided with a reference displacement Gs in the direction of the arrow.
This is due to the displacement occurring more. At this time, the arm 138 is fixed, and the guide hanger 130 is rotated about the support shaft 139.

Then, a correction signal is sent from the electronic control unit to the spindle 1.
By transmitting the control signal 42 to the servomotor controlling the arm 138, the arm 138 rotates about the support shaft 137, thereby increasing or decreasing the displacement of the reference displacement Gs, and correcting the necessary displacement.

Therefore, also in the motion control apparatus of this embodiment, the knitting condition changing means provided between the support means and the displacement applying means of each knitting element is controlled by a signal from the electronic control, so that the knitting condition can be stopped or operated. At any point in time, knitting conditions such as movement timing, displacement width, and displacement position can be changed.

FIG. 12 shows another embodiment of the second invention.
In this embodiment, the same components as those in the embodiment of FIG. 9 are denoted by the same reference numerals.

An eccentric cam 111 is fitted into the driving shaft 110, and the connecting arm 15
1 is connected to the other end of a drive lever 152 having one end fitted to the fulcrum shaft 106 via an eccentric shaft 153 and a fulcrum shaft 154. An eccentric drive pulley 155 is fitted to the eccentric shaft 153, and the
Pulley 1 fitted to drive shaft 157 of No. 6
58 are connected by a timing belt 159. 160 is a servo motor whose output shaft 161
A pulley 162 fitted to the drive shaft 157 and a pulley 163 fitted to the drive shaft 157
And are connected by

When it is necessary to increase or decrease a desired displacement with respect to the displacement Fs generated by the eccentric cam 111,
The servo motor 16 is controlled based on the correction signal from the electronic control unit.
0 is rotated, and the output shaft 161 is driven by a pulley 155 for eccentric driving via timing belts 164 and 159.
Is rotated, the axial distance between the driving shaft 110 and the fulcrum shaft 154 is changed, whereby a part of the displacement is temporarily increased or decreased, so that the lapping timing of the guide bar can be changed. .

[0064]

According to the present invention, since a drive shaft for converting the displacement by the displacement applying means is not required between the knitting element and the displacement applying means, the mass of the driven portion including the knitting element can be reduced. Therefore, the output of the displacement applying means can be reduced. This improves the responsiveness of the movement of the various knitting elements,
This leads to an increase in the number of revolutions of the warp knitting machine, and also enables double-row knitting in which the bearing means including the knitting elements are divided in the knitting width direction.

Further, the motion timing of the knitting element can be changed during knitting or while the knitting machine is stopped, and the displacement width, the displacement position, and the like can be automatically or necessary data based on the knitting conditions input in advance. , The composition conditions can be easily changed manually.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing an embodiment of a motion control device for a knitting element in a warp knitting machine of the first invention.

FIG. 2 is a side view showing a driving portion of a knitting element of a knitting element in the embodiment of FIG. 1;

FIG. 3 is a front view of the knitting element in the embodiment of FIG.

FIG. 4 is a front view of the knitting element in the embodiment of FIG. 1 with a drive portion of a stitch comb partially cut away.

5 is a front view of the knitting element in the embodiment of FIG.

FIG. 6 is a sectional view taken along line AA of FIG. 5;

FIG. 7 is a control block diagram showing an example of a control method of the knitting element motion control device of the present invention.

8 (A), 8 (B), 8 (C), and 8 (D) are curve diagrams showing knitting timings of needles, tongs, trick plates, and guide hangers of two types of knitting machines, respectively.

FIG. 9 is a partially cutaway side view of an embodiment of a knitting portion including a trick plate in the motion control device for knitting elements in the warp knitting machine of the second invention.

FIG. 10 is a side view showing an embodiment of the guide hanger portion of the embodiment.

FIG. 11 is a curve diagram showing a knitting curve obtained by a displacement applying unit and a knitting curve obtained by correcting a displacement by a knitting condition changing unit.

FIG. 12 is a side view showing a motion control device of another embodiment of the knitting unit of FIG. 9;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Guide block 1a ... Guide 2 ... Guide bar 3 ... Guide hanger 7, 12, 17 ... Linear motor 7b, 12b, 19 ... Absolute encoder 13 ... Falling plate 14 ... Falling plate holder 20 ... ... Needle block 20a ... Needle 21 ... Needle bar 22 ... Trick plate holder 23 ... Trick plate 24,34,35 ... Linear motor 55 ... Motor 29,34b, 35b, 59 ... Absolute encoder 30 ... Stitch comb block 30a ... Stitch comb 31 ... Stitch comb bar 51 ... Tong lead 51a ... Tong 52 ... Tong bar 61 ... Electronic control unit 62 ... Motor for generating reference pulse 63 ... Absolute encoder 64 ... Speed setting unit 65 …… Mechanical operation control unit 66 Timing data input unit 67-73 Pulse generation unit 80-86 Servo driver unit 101 Holding bar 102 Trick plate 103 Metal plate 106 Trick plate holding shaft 107 … Driving lever 108… Stator 109… Motor 110… Drive shaft 111… Exen cam 113… Hollow shaft servo motor 130… Guide hanger 131… Guide needle 132… Guide bar 133… Drop plate 134 slide metal 135 traverse 136 holding metal 137 support shaft 138, 144 arm 139, 140, 142 support shaft 143 eccentric lever 145 rod 150 arm portion 151 ... Connection arm 15 ...... driving lever 153 ...... eccentric shaft 154 ...... fulcrum shaft 155 ...... eccentric drive pulley 158 ...... timing pulley 157 ...... driving shaft 159,164 ...... timing belt 160 ...... servomotor 161 ...... servomotor output shaft

Claims (5)

[Claims] 1. A warp knitting machine, wherein a displacement is applied to a knitting element supported by a support means by a displacement applying means for applying a displacement necessary for knitting motion. Is connected to the bearing means without the drive shaft, and the displacement applying means is electronically controllable. Based on a signal from the electronic control unit to the displacement applying means, the knitting condition is changed together with the application of the normal displacement. A motion control device for a knitting element in a warp knitting machine, characterized in that it is made possible. 2. The method according to claim 1, wherein the displacement applying means is at least one of a servo motor, a linear motor, and a piezoelectric element.
The control device according to claim 1, wherein a time, a speed, and the like can be changed. 3. The motion control device according to claim 2, wherein
A displacement signal matching a desired knitting curve generated based on a signal from a synchronization signal generator or a synchronization signal generated in the electronic control unit is transmitted to the displacement applying means, and a plurality of different knitting elements are knitted in synchronization. A method for controlling a motion control device of a knitting element in a warp knitting machine to be driven. 4. A warp knitting machine wherein a displacement is applied to a knitting element supported by a bearing means by a displacement applying means for applying a displacement necessary for knitting motion. At least one electronically controllable knitting condition changing means is interposed between the knitting condition and the bearing means so that knitting conditions can be changed based on a signal from the electronic control unit. Exercise control device. 5. The motion control device according to claim 4, wherein the knitting condition changing means is at least one of a servomotor, a linear motor, and a piezoelectric element for controlling the displacement, time, speed and the like so as to be changeable.