JP4287035B2 - Device for individually controlling jacquard guides in warp knitting machines - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for individually controlling a jacquard guide in a warp knitting machine.
[0002]
[Prior art]
In the jacquard device of a warp knitting machine, the applicant applied for the jacquard guide bar structure in which the harness cord is omitted and the piezoelectric element is provided, and is approved as Japanese Patent No. 1770365. Thereafter, a jacquard device using this basic patent has been proposed, and disclosed in, for example, Japanese Patent No. 29197773 and Japanese Patent Laid-Open No. 8-209510.
[0003]
These jacquard apparatuses are provided with a plurality of jacquard guides having a yarn feeding hole at one end, and are fixed to a holding portion of the jacquard guide bar corresponding to the number of knitting needles. Normally, one unit segment is formed for every 16 jacquard guides, and the control wires connected to each connection electrode terminal are grouped as one cord. The control board attached to the traverse which is laid in the width direction of the knitting machine is inserted into an attachment frame body provided therein.
[0004]
Therefore, although the harness cord has certainly disappeared from the jacquard device, the attachment frame body with the control board installed therein and the cable connected to the frame body still exist in the vicinity of the knitting part of the knitting machine. In addition, the production man-hours are inevitably increased in the production of knitting machines, and the presence of attachment frames and cables during knitting complicates the knitting work such as yarn handling and the number of jacquard guide bars. Installation was extremely difficult.
[0005]
[Problems to be solved by the invention]
The present invention eliminates the above-mentioned drawbacks, facilitates the production and knitting work of the jacquard guide bar, and realizes a simple jacquard guide bar structure to install a large number of jacquard guide bars. The machine is intended to be realistic.
[0006]
[Means for Solving the Problems]
The present invention is a jacquard apparatus adapted to individually control the jacquard guide in warp knitting machines, in order to solve the above problem, it comprises a piezoelectric actuator, jacquard with yarn feed hole in one end a plurality of jacquard segments formed by juxtaposed a plurality of piezoelectric elements element comprising a guide, in jacquard guide bar is connected fixed against the longitudinal direction of the mounting portion of the attached has been warp knitting machine, wherein each A control board is integrated into a part of the Jacquard segment, and the control boards of adjacent segments are serialized by a cable as a bus line that is connected to the input / output connectors provided at the top of each segment. in addition to coupling become coupled individually to the electrode terminals of the piezoelectric elements elements in each of the segments, the control board Each piezoelectric element element Jacquard segments in parallel by the control and drive signals to be transferred is obtained by a configuration in which distortion.
[0007]
As a result, the control / drive signals to the control board can be transferred serially, that is, the control / drive signals can be transferred to the next control board one after another, so the attachment frame and the cord are wiped out from the vicinity of the knitting machine knitting portion. Therefore, the knitting operation can be suitably performed and the structure of the jacquard guide bar is simplified, so that there is no obstacle in arranging the jacquard guide bar.
[0008]
In particular, as in the above-described apparatus, in the plurality of jacquard segments connected and fixed to the attachment portion of the jacquard guide bar, the control boards of adjacent segments are connected to input / output connectors provided on the upper portions of the segments. Since it is serially connected via a cable as a bus line, only one cord is required for each jacquard guide bar. As a result, a large number of jacquard guide bars can be provided on the warp knitting machine. It becomes possible .
[0009]
Further, the jacquard segment may be formed by detachably attaching a plurality of piezoelectric element elements individually, and in this case, each damaged jacquard guide may be replaced. This can be performed individually for each piezoelectric element.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described based on examples shown in the drawings. FIG. 1 is a side view showing a partial section of a jacquard guide structure including an embodiment of the device of the present invention having a piezoelectric actuator, and FIG. 2 is a diagram showing a plurality of jacquard segments attached to an attachment portion of a jacquard guide bar. FIG. 3 is a perspective view showing a single part of a piezoelectric element element fitted to a jacquard guide segment.
[0011]
1 Ru jacquard guide bar der. Reference numeral 2 denotes a jacquard segment, which is fixed by a screw 4 to an attachment portion 3 provided at one end in the width direction of the jacquard guide bar 1 as is apparent from FIG .
[0012]
A piezoelectric element 5 includes a holding part 6, a displacement part 7, and a guide part 8, as shown in FIG.
[0013]
The displacement part 7 is formed by adhering piezoelectric ceramics coated with an electrode layer on both sides of a support thin plate.
[0014]
The holding portion 6 is formed by fixing an electrode terminal 9 provided at an end portion of the supporting thin plate and an electrode terminal 10 connected to the electrode layer of the piezoelectric ceramic, integrally formed by injection in an insulated state.
[0015]
The guide portion 8 includes a jacquard guide 8b having a yarn feeding hole 8a, which is provided at an end opposite to the holding portion 6 as shown in the drawing .
[0016]
As shown in FIG. 2, a plurality of jacquard segments 2 are attached to the attachment portion 3 of the jacquard guide bar 1 in close contact with each other in the longitudinal direction. Are shown for ease of construction of the Jacquard segments 2, those two were attached on the condition of removing a portion of the member in FIG. The structure of the apparatus will be described next with reference to FIGS.
[0017]
As for the piezoelectric element 5 , 16 piezoelectric element elements 5 are individually arranged in parallel in one unit of the jacquard segment 2 corresponding to the knitting needle row (not shown) of the warp knitting machine as shown in the figure. It is attached so as to be removable.
[0018]
Reference numeral 11 denotes a plug, one of which is connected to the electrode terminals 9 and 10, and the other is inserted into the output terminal 13 of the control board 12. The control board 12 is screwed and fixed by screws 18, 19, 20 between holding plates 14, 15 formed by fitting the piezoelectric element elements 5 through spacers 16, 17. Reference numeral 21 denotes a lid plate which is provided outside the holding plate 15 and is fixed together with the holding plate 15 by screws 20.
[0019]
Reference numeral 22 denotes an attachment frame body, which has an approximately upper half portion integrated with the holding plate 14 by bonding, and is screwed and fixed to the holding body 23 at the upper end portion. Further, the lower end portion of the attachment frame body 22 is notched corresponding to the knitting machine gauge, and a plurality of concave groove portions 24 are provided, and the jacquard guide 8b is continuously fitted into the groove portions 24. Yes.
[0020]
The control board 12 is mounted with an IC chip (M56693FP manufactured by Mitsubishi Electric Corp.) 25 for performing signal processing for control / drive, and details of the control / drive signal path are shown in FIG. R1 to R16 in FIG. 4 are current limiting resistors, and one side is wired to the electrode terminals 9 of the 16 piezoelectric element elements, and the other side is wired to each terminal of the IC chip 25. Reference numerals 26 to 33 denote bus lines, the line 26 is a high voltage (48V) supply VH line, 27 is a high voltage ground (0V) PGND line, 28 is a control power supply (5V) supply VDD line, and 29 is control power ground (0V) for LGND line, 30 an output enable signal input for BLK line, 31 denotes a latch input signal input-output LAT line, 32 a clock signal input-output CLK line, 33 for serial data input and output SIN lines, each of which is connected to a corresponding IC chip 25. NC is an unused terminal. R18 is a line between the line 28 and the line 30, R20 is a line between the line 28 and the line 31, R22 is a line between the line 28 and the line 32, and R23 is a bus reinforcing resistor provided between the line 28 and the line 33. .
[0021]
34 power and signal input connector 35 is a connector for power supply and signal output, the juxtaposed above the control board 12 of each jacquard segment, as shown in FIG. 2, jacquard adjacent segments adjacent the second control boards, are connected by a cable 36 having both ends Ru connected Ri and to the connector 34, 35 name than eight bus lines.
[0022]
The above is the configuration of an apparatus according to an embodiment of the present invention. Next, an embodiment of the control system will be described with reference to the control system diagram of FIG.
[0023]
37 is a control computer, 38 is a line driver board, and 39 is a receiving board. The control computer 37 receives data input for inputting overlap, underlap start signals, interface signals with the knitting machine, and the like. A card 40 is connected, and a data output card 41 for outputting various output data from the control computer 37 is connected. The data output card 41 and the line driver board 38 are connected to each other by the differential lines 42 and 43, respectively. The receiving board 39 is attached to a part of the machine frame of the warp knitting machine on one side of the jacquard guide bar, and is 26 to 33 with respect to the power supply and signal input connector 34 of the leftmost one of the jacquard segments 2. A cable 44 composed of eight bus lines is connected. The pattern data is separately created by a pattern creation system (not shown) and input to the control computer 37 from a storage medium such as a magnetic disk.
[0024]
As described above, the jacquard segments 2 are juxtaposed on the attachment portion 3 of the jacquard guide bar 1, and the control boards 12 of the adjacent jacquard segments 2 are connected in the longitudinal direction via the cable 36. Thus, the transmission of each control / drive signal is serial, that is, these signals can be transferred to the adjacent control board one after another.
[0025]
Accordingly, only the cable 44 exists in the vicinity of the jacquard guide bar 1 and nothing exists in the vicinity of the knitting portion, so that there is no obstacle to work and knitting on the knitting machine.
[0026]
Next, the distortion control of the piezoelectric element element 5 will be described. As described above, the pattern data and signals captured by the control computer 37 are processed by the control computer 37, and the control signals are sent from the data output card 41 to the control boards 12 through the line driver board 38 and the receiving board 39 from the cable 44. and drive current is Ru is supplied to each knitting course. Thus, when 48V is applied to the displacement portion 7 of the piezoelectric element element 5, the piezoelectric ceramics are distorted, and the displacement portion 7 is distorted, so that the concave groove portion until the jacquard guide 8b abuts the stop position to the left or right. The pattern is knitted by moving and moving within 24 and repeating this displacement as appropriate.
[0027]
【The invention's effect】
According to the present invention, since the control board for controlling the piezoelectric element is integrally incorporated in the jacquard segment, the attachment frame body and the cord provided inside the control board are wiped out from the vicinity of the knitting machine knitting portion. Therefore, it became a suitable environment for knitting work and knitting machine handling.
[0028]
In particular, a plurality of jacquard segments attached in the longitudinal direction of the jacquard guide bar attachment part are connected to the input / output connectors provided on the upper part of the segment control boards. cable concatenates the by Ri serially as, since the control and drive signals to each segment has a structure that can be transferred serially to the control board, the code for each jacquard guide bar is well only one, As a result, it was extremely easy to provide a plurality of jacquard guide bars, which contributed to the increase in the number of jacquard guide bars.
[Brief description of the drawings]
FIG. 1 is a side view showing a partial section of a jacquard guide structure in an embodiment of the device of the present invention including a piezoelectric actuator.
FIG. 2 is a side view showing a state in which a plurality of jacquard segments are attached to an attachment portion of a jacquard guide bar.
FIG. 3 is a perspective view showing a single part of a piezoelectric element.
FIG. 4 is an explanatory diagram showing details of a control / drive signal path to a piezoelectric element.
FIG. 5 is an explanatory diagram schematically showing a control system of the apparatus of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Jacquard guide bar 2 ... Jacquard segment 3 ... Attachment part 5 ... Piezoelectric element 8a ... Yarn feeding hole 8b ... Jacquard guide 9,10 ... Electrode Terminal 12 ... Control board 26-33 ... Bus line 34 ... Power supply and signal input connector 35 ... Power supply and signal output connector 36 ... Cable

Claims (2)

It is provided with a piezoelectric actuator, a plurality of jacquard segments formed by juxtaposed a plurality of piezoelectric elements element comprising a jacquard guide having a yarn feeding hole in one end, the longitudinal against the mounting portion of the jacquard guide bars In the warp knitting machine connected and fixed in the direction ,
A cable as a bus line in which control boards are integrated into a part of each of the jacquard segments, and control boards of adjacent segments are connected to input / output connectors provided at the top of each segment. optionally with connecting serially, it will be connected individually to the electrode terminals of the piezoelectric elements elements in each of the segments, each piezoelectric element element jacquard segments in parallel by the control and drive signals to be transferred to the control board An apparatus for individually controlling jacquard guides in a warp knitting machine, characterized in that the structure is distorted. 2. The apparatus for individually controlling a jacquard guide in a warp knitting machine according to claim 1, wherein the jacquard segment is formed by detachably attaching a plurality of piezoelectric element elements to each other .

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