JPH05272038A - Device for controlling piezoelectric needle selecting device for circular knitting machine - Google Patents

Abstract

PURPOSE:To reduce the number of output lines and to miniaturize the subject device by electrically connecting block materials having plural integrated piezoelectric needle selecting devices for circular knitting machine and successively outputting output signals from the driver circuit of a controller to each block material. CONSTITUTION:Block materials 2,100 having plural integrated piezoelectric needle selecting device for circular knitting machine are electrically connected. A circuit line is equipped with switching mechanisms 26. After an output signal is outputted from a driver circuit 24 of a controller 23 to the block material, the output signal is transferred to an adjoining other block material, outputted and successively the output signal is outputted to each block material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piezoelectric needle selection device control system for circular knitting machines, and is particularly effective when a large circular knitting machine performs needle selection control with a large number of piezoelectric type pattern needle selection devices. Related technology.

[0002]

2. Description of the Related Art In a circular knitting machine, when knitting a knitted fabric such as socks, a needle selection jack (hereinafter, referred to as a needle selection jack) having a butt projecting in a large number of grooves (vertical grooves) on the outer circumference of a rotating knitting cylinder.
Sometimes it's just Zick. ) Is inserted so that the knitting needle that comes into contact with the jack can be moved up and down, and the butt of the jack is selectively pressed (pressed) by the needle selection finger (needle selection lever) of the needle selection device. There is a so-called press type needle selecting device for selecting knitting needles. Figure 10
Is an overall view of the circular knitting machine. For example, a knitting needle 50 having a protruding butt and a knitting needle 54 are fitted into a rotating knitting cylinder 50, and the knitting yarn 52 is supplied from the bobbin 51 to the knitting needle 54. Then, in order to select the knitting needles 54 and perform the pattern knitting, a large number of press type needle selecting devices 53 are arranged around the rotating knitting cylinder 50. As shown in the figure, the piezoelectric knitting device 53 for circular knitting machine may be provided in a number up to nearly 100, depending on the pattern. The operation of the needle selecting device 53 is performed by pressing the butt of the jack toward the knitting cylinder 50 by the needle selecting finger (hereinafter, simply referred to as finger) to move the knitting cylinder 50.
The butt of the jack cannot engage the raising cam at the lower part of the cylinder 50, and therefore the knitting needle 54 that abuts on the upper part of the jack.
Does not move upward, and as a result, knitting is not performed by the knitting needle 54, while conversely, when the butt is not pressed, the knitting needle 54 that abuts the upper part of the jack is raised to perform knitting Is. The needle selection device 53 is electrically connected to the patterning controller 23. The patterning controller 23 is a control device that outputs an output signal (control signal) corresponding to the pattern data to the needle selection device 53 and performs a predetermined process. The operation of the needle selection device 53 is
A knitted fabric having a desired pattern structure is performed by computer control by the patterning controller 23 and is performed by a knitting procedure stored in a storage device such as paper, cassette tape or floppy disk in the patterning controller 23. It is possible to organize.

As the needle selecting device, various needle selecting devices using electromagnets have been proposed in the past (Shokai Sho 62-9).
No. 3396 gazette), such an electromagnetic needle selecting device has a limit in increasing the response speed and consumes a large amount of power. That is, in a circular knitting machine such as such an electronic patterned sock circular knitting machine, there is a demand for higher speed, and accordingly, the response of the needle selection device also needs to be faster, and the response speed is not increased. To increase the speed of the knitting machine, increase the number of needle selection levers. However, if the number of needle selecting devices is increased, the needle selecting device becomes large, which causes a space problem for installing the needle selecting device. The present inventors have conventionally proposed various piezoelectric needle selecting devices that use a piezoelectric element to select a knitting needle instead of a knitting machine needle selecting device that uses such an electromagnet. (For example, JP-A-62-28451). In this piezoelectric needle selecting device, a piezoelectric element is attached to a support plate such as a metal plate, and a voltage is applied to the piezoelectric element to bend the piezoelectric body composed of the piezoelectric element and the support, The jack is selectively pushed. According to the needle selecting device using this piezoelectric element, since the piezoelectric element has a quick response speed, a high cycle pulse can be applied. For example, if a pulse of 160 cycles is applied, the needle selecting action can be performed at a speed three times as high as that of a conventionally known needle selecting device using an electromagnet (usually 60 cycles). This means that the number of plates can be reduced to 1/3 for a knitting machine that knits the same pattern knitting structure. Further, in a needle selecting device having the same number of plates, knitting a three-fold complicated pattern knitting structure, that is, the product of the number of needles and the number of rotations of a knitting cylinder (in the case of a circular knitting machine) is 3
It is possible to make knitting knitting for double times. In addition, since this piezoelectric needle selecting device is composed of a thin plate and a piezoelectric element, the required height per sheet can be made smaller and the lateral direction can be made smaller than the conventional finger using an electromagnet. it can. Therefore, even if the same number of fingers are used, the size of the needle selection device itself can be further reduced. Since the needle selecting device is small in size and has a high response speed as described above, it has been difficult to arrange the needle selecting device and knit a pattern for knitting a pattern in the related art due to a mechanical space. Also, it has become easy to give a high-speed pattern knitting function using this needle selecting device.

However, when the needle selection device 53 having such a piezoelectric element and the patterning controller 23 are electrically connected to perform computer control, conventionally, as shown in FIG. The driver circuit 24 and each of the plurality of piezoelectric elements 210 are directly electrically connected, a needle selection signal is sent to each of the piezoelectric elements 210, and the individual piezoelectric elements 210 are controlled and driven, based on the pattern forming procedure of the controller. , Knitting on the knitting machine. for that reason,
A large number of output lines 25 for directly electrically connecting the driver circuit 24 of the controller 23 and each of the plurality of piezoelectric elements 210 are required. That is, the piezoelectric element 210
The number of output lines 25 is required, and for example, if 100 piezoelectric elements 210 are provided, the output lines 25
Therefore, the driver circuit 24 in the controller 23 needs, for example, a number of transistors corresponding to the number of transistors, which makes the driver circuit board to which the transistors are attached large or requires a large number. And the circuit inside the controller 23 is complicated.

[0005]

SUMMARY OF THE INVENTION The present invention is intended to solve the above problems. Other objects and novel features of the present invention will be apparent from the entire description of the specification and the accompanying drawings.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a large number of piezoelectric needle selecting devices for circular knitting machines having piezoelectric elements are arranged around a knitting cylinder having a plurality of knitting needles. The piezoelectric needle selecting device and the controller are electrically connected, and the driver circuit of the controller outputs an output signal corresponding to the pattern data to the piezoelectric needle selecting device for the circular knitting machine to select the needle for the circular knitting machine. When performing control, a block body formed between a plurality of piezoelectric needle selecting devices for circular knitting machines arranged around the knitting cylinder or a plurality of piezoelectric needle selecting devices for circular knitting machines After electrically outputting the output signal from the driver circuit of the controller to the piezoelectric needle selecting device for the circular knitting machine or the block body, the block bodies each including a plurality of blocks are electrically connected. Piezoelectric needle selection equipment for other adjacent circular knitting machines Alternatively, the piezoelectric needle selecting device for a circular knitting machine, which transfers to the block body and outputs the output signal, and sequentially outputs the output signal for each circular knitting machine or each block body This relates to the device control method.

[0007]

In the present invention, when the needle selection control of the circular knitting machine is performed, a plurality of piezoelectric needle selecting devices for the circular knitting machine are assembled to form a block body. For example, assuming that 100 piezoelectric elements are provided, the piezoelectric element is divided into, for example, 10 block bodies, and each block body of the block group including the 10 block bodies is electrically connected. Then, the wiring system is electrically connected to the driver circuit of the controller, and the output signal is output from the driver circuit of the controller to the one block body, and then the output signal is transferred to another adjacent block body. Is output, and the output signal is sequentially output for each block body. With this configuration, it is possible to control with 10 output lines corresponding to the number of piezoelectric elements in the block body, for example, 10 piezoelectric elements according to the above example, and it is possible to significantly reduce the output lines. Therefore, the number of transistors in the driver circuit in the controller is reduced, the driver circuit board and the controller are downsized, and the circuit in the controller is not complicated. A piezoelectric element can be charged with a voltage in an extremely short time, and as described above, has a quick response speed. Therefore, one block body of a piezoelectric element group divided into a plurality of block bodies is pulsed. After charging, the pulse can be applied from the driver circuit for each block group one after another by moving to another block body and charging the pulse, whereby the knitting cylinder rotates. The piezoelectric needle selector for the circular knitting machine, which is provided around the knitting cylinder from the driver circuit of the controller, before each needle located in front of the piezoelectric needle selector for the circular knitting machine is displaced. This is based on the fact that the piezoelectric element of the device can complete the output of the output signal according to one pattern data. In this respect, in a helicopter control device using an electromagnet, it takes a long time to perform the above needle selection operation by the electromagnet after the rise is slow and a pulse current is applied, and the knitting cylinder rotates. However, it is difficult to complete the output of the output signal corresponding to one pattern data before each needle located in front of the piezoelectric needle selecting device for the circular knitting machine is displaced.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention. As shown in FIG. 1, the plurality of piezoelectric elements 210 are divided into a plurality of block bodies 2100. The block body 2
Reference numeral 100 is a block body of a piezoelectric needle selecting device for a circular knitting machine, which has a single-stage or multi-stage piezoelectric element 210. . Each block body 2100 is connected by a wiring 22A. The wiring 22A is connected to the driver circuit 24 of the controller 23 by the wiring 22B. As described above, each time the knitting cylinder rotates and one needle located in front of the piezoelectric needle selecting device for the circular knitting machine shifts, the driver circuit 24 of the controller 23 is attached to one block body 2100.
Pulse is applied through the wiring 22A to complete the charging, then, the pulse is similarly applied from the driver circuit 24 to each block body 2100 by moving to the adjacent block body 2100 and similarly charging the pulse. To do it. The charging time by applying the pulse can be completed in about 1 to 2 microseconds (μ seconds). In the drawing, the wiring 22A and the wiring 22B are 1
The individual block body 2100 is shown by the line of the book.
The number of piezoelectric elements 210 corresponding to the number of the piezoelectric elements 210 is configured as an output line. As shown in FIG. 1, a switching mechanism 26 is provided in the wiring system. This is one block body 2
When a pulse is applied to the 100 from the driver circuit 24 of the controller 23 through the wiring to complete the charging, next, the block is moved to the adjacent block body 2100 and the pulse is similarly charged.
This is based on applying a pulse from the driver circuit 24 for each 0, and also for each block 210.
This is because 0 is connected, and when a pulse is applied from the driver circuit 24 of the controller 23 to the one block body 2100 through a wiring to complete charging,
Each block body 2100 is sequentially separated from the adjacent block body 2100 by charging a pulse.
This is to apply the pulse from the driver circuit 24 every time. The switching mechanism 26 is, for example, an FET.
(Field effect transistor). Depending on the installation of the switching mechanism 26, the controller 2 is connected to the wiring system.
An output line for outputting a switching command from the driver circuit 24 of No. 3 is required. The controller 23 is a device that stores a pattern structure according to a pattern, outputs an output signal according to the pattern data to the plurality of piezoelectric elements 210 based on the stored pattern organization procedure, and performs a predetermined process. .. A controller such as that used in an electromagnetic needle selecting device can be used in such a device, and the device has a known structure, so a detailed description thereof will be omitted. The controller 23 includes a storage device, a processing device, and an output device. The driver circuit 24 is a main body of the processing device (CPU), and in performing pattern processing,
It is possible to convert the voltage signal into the electric power necessary to drive the piezoelectric element. Applying a pulse to the piezoelectric element 210 from the driver circuit 24 through the wiring to charge the piezoelectric element 210 is also to operate the piezoelectric element 210 and send out the pattern forming procedure (pattern information) of the controller 23.

Next, an example of a piezoelectric needle selecting device for a circular knitting machine to which the present invention is applied will be described. FIG. 5 shows an example of the piezoelectric needle selecting device for the circular knitting machine. Further, FIG. 6A shows a cross-sectional view of the main part. In these drawings, 2 is a piezoelectric body having a piezoelectric element 210, and the piezoelectric element 210 is attached to both surfaces of the plate 200 as shown in the cross-sectional view of FIG. 6 (B). The plate 200 is made of metal, for example. The piezoelectric element 210 can be attached to the plate 200 using an adhesive such as an epoxy adhesive. The two piezoelectric elements 210 are bonded with their positive and negative poles in the same direction. As the piezoelectric element 210, any piezoelectric element having an inverse piezoelectric effect can be used. However, in order to supply a large amount of piezoelectric elements having industrially stable quality, it is preferable to use a ceramic piezoelectric element made of barium titanate or the like. Since the thinner the piezoelectric element 210 is, the higher the electric field can be, it is preferable that the piezoelectric element 210 has a thickness of about 100 μ to 200 μ, and is elongated in the longitudinal direction of the plate 200. On both surfaces of the piezoelectric element 210, paste or the like is baked for electrodes, and the electrodes 220 are respectively provided with the conductive wire 2.
30 is attached, and a connector 240 is attached to the other ends of these conductors 230, and the connector is connected to the connector 19 as described later. FIG. 3 shows the relationship between the main part of the piezoelectric needle selection device 1 for a circular knitting machine equipped with the piezoelectric body 2 having the above-mentioned piezoelectric element 210, the controller 23 and the driver circuit 24, based on FIG. It was done.

Next, the operation of the present invention will be described with reference to the flow chart shown in FIG. As a basic operation, the piezoelectric element 210 of the block body 2100 is designated (addressed), and pattern data corresponding to the pattern procedure is output. First, the start address is set (100). The address is output (step 101), and the process waits until the address is determined (step 102). Then, the pattern data is output (step 103). The wiring 22B from the driver circuit 24 of the controller 23 to one block body 2100,
A voltage is applied through the wiring 22A and the completion of charging of the piezoelectric element 210 is waited for (step 104). Next, the address is advanced (block body transition) (step 10
5) Until the output of the output signal according to the initial pattern data is completed, the output signals according to the pattern data are sequentially output to the adjacent block bodies 2100. The operation is completed before the knitting cylinder rotates and one knitting needle located in front of the piezoelectric needle selecting device for the circular knitting machine is displaced by one as a whole. When the output of the initial pattern data is completed, then the knitting cylinder is rotated again, and before the knitting needle positioned in front of the piezoelectric needle selecting device for the circular knitting machine is displaced by one, the next pattern data Then, the operation based on the same flow chart as described above is repeated, and the pattern data corresponding to the pattern procedure is output one after another to proceed with the patterning. In the above, by the switching mechanism 26 described above,
A pulse is applied to the one block body 2100 from the driver circuit 24 of the controller 23 through the wirings 22A and 22B, and switching is performed when the charging is completed, and then the block body 2100 is moved to the adjacent block body 2100 and the pulse is similarly charged. Thus, the pulse can be applied from the driver circuit 24 while sequentially performing the switching operation for each block body 2100.

Next, the piezoelectric needle selecting device 1 for a circular knitting machine shown in FIG. 5 will be further described. Piezoelectric needle selection device for circular knitting machine 1
A spherical body 3 is attached to the upper end of the piezoelectric body 2 as shown in FIG. 6 (A). FIG. 8 shows a perspective view of an example of the spherical body 3. As shown, the groove 30 is provided at the end of the spherical body 3A.
A is provided in a groove, and one end of the piezoelectric body 2 is inserted and fixed in the groove 30A. As shown in FIGS. 5 and 6,
The spherical portion of the spherical body 3 includes a bolt 5 on the offset plate 4.
Is held in the groove portion 7 of the offsetter 6 attached by and can be rotated in the groove portion 7 of the offsetter 6, the upper end portion of the piezoelectric body 2 can be moved. In addition, in FIG.
Is a washer. Although not shown, a bolt hole is vertically provided in the offset plate 4, and by adjusting the position where the bolt 5 is stopped, the position of the offsetter 6 is extended, and the upper end portion of the piezoelectric body 2 is extended. Is adjusted so that the upper end of the piezoelectric body 2 can be adjusted to an appropriate position.

As shown in FIGS. 5 and 6 (A), a spherical body 8 similar to the spherical body 3 is attached to the lower end portion of the piezoelectric body 2, and the spherical body 8 serves as a finger 9. They are connected within the open end 90 of the upper end. The sphere 8 is movable within the open end 90 of the finger 9.

On the side opposite to the upper end open end 90 of the finger 9, a hole is formed in the width direction of the finger 9 as shown in FIG.
As shown in (A), the pin 10 is inserted into the hole of the finger 9.
And the finger 9 is fixed to the frame 11. A face plate 12 is attached to the lower end of the frame 11 with bolts 13. As shown in the figure, the strip-shaped fingers 9 are connected to the rectangular piezoelectric body 2 so that they are aligned (in the same direction) with the rectangular piezoelectric body 2. The fingers 9 should be as short as possible in order to make them lighter and to accelerate their operation. For the same purpose, the finger 9 may have a through hole 92 as shown. FIG. 7 is an explanatory view of the disengagement of the piezoelectric needle selecting device for the circular knitting machine and the butt of the jack described above. In FIG. 7A, the finger 9 is the jack 14
Locked on the bat 140 (pressed state)
Further, FIG. 7B shows a state in which it is not pressed. That is, the finger 9 moves following the bending movement of the piezoelectric body 2, and when the finger 9 pushes the butt 140 of the jack 14, the finger 14 pushes the jack 14 in the direction of the knitting cylinder 50 and contacts the knitting cylinder 50. In such a case, the butt 140 of the jack 14 cannot engage with the raising cam 1400 at the lower portion of the cylinder 50, so that the knitting needle 54 that abuts on the upper portion of the jack 14 does not move upward, and as a result, The stitches are not formed by the knitting needle 54. On the other hand, conversely, the bat 140
When is not pressed, the knitting needle 54 that abuts on the upper portion of the jack 14 is raised to knit. As shown in FIG. 5, the lower end portion of the finger 9 is projected from the opening portion opened in the face plate 12. The opening is configured to have a width, a size, etc. corresponding to the finger 9 so that the finger 9 can perform the above operation. The opening side wall surface of the face plate 12 serves as a stopper function of the finger 9. The fingers 9 are made of, for example, metal, like the plate of the piezoelectric body 2 described later. The finger 9 has a horizontally long strip shape, for example, 1
Although it is configured to be a thin plate having a thickness of about m / m, the lower end portion may be thicker in a taper shape in order to reduce the impact with the jack 14 instead of having a uniform thickness. Finger 9
The smaller the thickness of the, the faster its response speed. Also,
The finger 9 may be tapered from one end to the other end. As a result, the weight of the finger 9 can be reduced, and the response speed of the finger 9 can be further improved.

As shown in FIG. 5, the intermediate position between one end (upper end) and the other end (lower end) of the piezoelectric body 2 is held by the rotating body 16 rotatably attached to the bracket 15.
FIG. 9 shows an example cross-sectional view of the rotating body 16 used in this embodiment. As shown in FIG.
A through hole 160 having a size that allows the insertion of the through hole is provided. Insert the piezoelectric body 2 into the through hole 160 of the rotating body 16,
The piezoelectric body 2 is clamped and fixed to the rotating body 16. Both ends of the rotator 16 are rotatably installed with screws through the holes formed in the bracket 15. The piezoelectric body 2 is fixed in the through hole 160 of the rotating body 16 by molding or an adhesive. The rotating body 16 is configured to move as the operation of the piezoelectric body 2 does not hinder the bending movement of the piezoelectric body 2. It is important to fix the middle portion between the upper end portion and the lower end portion of the piezoelectric body 2 to the rotating body 16, and the piezoelectric body 2 tends to bend with this point as a midway fulcrum. The closer the finger 9 is, the faster the finger 9 is, the smaller the amplitude is, the more torque can be output, and the applied voltage can be reduced. However, if the finger 9 is too close, the torque is not output. On the other hand, when the finger 9 moves away from the finger 9, the opposite phenomenon occurs and the amplitude becomes large, but the torque decreases. Therefore, it is necessary to select an appropriate position, and it is preferable that the position be appropriately selected.
The above embodiment shows an example in which the piezoelectric body 2 is provided approximately in the middle between the upper end and the lower end. As described above, when the midway position between the upper end portion and the lower end portion of the piezoelectric body 2 is sandwiched by the rotating body 16 rotatably attached to the bracket 15 and a midway fulcrum is provided, the operating speed of the finger 9 is significantly increased. Can be improved.

As described above, with respect to the piezoelectric body 2, the upper end portion thereof is movably supported in the groove portion 7 of the offsetter 6, and the lower end portion thereof is movably connected to the finger 9, and the piezoelectric body 2 is movably connected. The intermediate positions of the upper end and the lower end of 2 are sandwiched by the rotating body 16 rotatably attached to the holder, and the upper end and the lower end of the piezoelectric body 2 and the upper end and the lower end of the piezoelectric body 2 are separated. The middle position is made movable so as to follow the bending motion of the piezoelectric body 2 so that the bending motion of the piezoelectric body 2 is not hindered, and the middle position of the piezoelectric body 2 is clamped and fixed by the rotating body 16. By providing the fulcrum in the middle, the speed of the needle selection operation can be further improved, the life of the piezoelectric body can be lengthened, and the applied voltage can be further lowered. Have advantages such as It could be. Further, in the conventional electromagnet-based one, the power consumption efficiency is extremely low, and most of it is dissipated by heat and the like, resulting in a large power consumption. It does not occur and the power consumption is significantly reduced. Further, since the piezoelectric body 2 of the needle selection device is composed of the thin plate 200 and the piezoelectric element 210, the size of the device itself can be further reduced as compared with the conventional one using a solenoid using an electromagnet. be able to. Furthermore, since the finger 9 is connected to the piezoelectric body 2 in a straight line (in the same direction) as the rectangular piezoelectric body 2, the size of the device itself can be further reduced. In this respect, it is conceivable that the finger 9 is attached in a direction perpendicular to the piezoelectric body 2 including the plate and the piezoelectric element.
The lateral width of the device becomes wider and the device becomes larger. Since a large number of the needle selection devices 1 are arranged, it is important to reduce the size of the device.

As shown in FIG. 5, the offset plate 4 includes:
The connect board 18 is joined via the insulating plate 17, and the connector 19 and the connector 20 are connected to the connect board 18. As described above, the connector at the end of the lead wire 230 drawn from the piezoelectric body 2 and the connector 19 are connected to each other. The controller 20 is connected to the connector 20 and is connected to the controller 23.
Are connected. The controller 23 applies a pulse to each piezoelectric element 210. Based on the pulse applied from the controller 23, the piezoelectric body 2 bends with the midpoint fulcrum where the rotating body 16 is provided as a fulcrum, and the fingers 9
Operates based on the pattern forming procedure of the controller 23.

Although the invention made according to the present invention has been specifically described based on the embodiments, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the invention. Needless to say. For example, in the above embodiment, the case where the block body is configured has been described. However, each device of the piezoelectric needle selecting device for a circular knitting machine having a plurality of multi-stage piezoelectric elements is electrically connected, and the controller driver From the circuit, after outputting the output signal to the circular needle knitting machine piezoelectric needle selecting device, then move to another adjacent circular knitting machine piezoelectric needle selecting device to output the output signal, sequentially. It is also possible to output the output signal for each piezoelectric needle selecting device for each circular knitting machine. In this case as well, the switching mechanism 26 is similarly installed to perform the switching operation.

[0018]

As described above, according to the present invention, a large number of output lines are not required to connect between the piezoelectric element and the driver circuit of the controller, and the output lines are reduced, as compared with the conventional example. This reduces the number of transistors in the driver circuit, downsizes the driver circuit board and control device, and does not control and drive each individual piezoelectric element, eliminating the complexity of circuits inside the controller. The cost can be reduced. Further, in the present invention, a needle selecting device by a piezoelectric method is adopted, and since the piezoelectric element has a quick response speed, the needle selecting operation can be performed at a remarkably faster speed as compared with a conventionally known one using an electromagnet. In addition, there is no generation of heat due to speeding up, which has been a problem in circular knitting machine needle selection devices that use conventional electromagnets.
Advantages such as low power consumption, long life of the piezoelectric element, and size reduction can be achieved.

[Brief description of drawings]

FIG. 1 is an explanatory view of main parts showing an embodiment of the present invention,

FIG. 2 is an explanatory view of a conventional example,

FIG. 3 is an explanatory view of main parts showing an embodiment of the present invention,

FIG. 4 is a flowchart showing an embodiment of the present invention,

FIG. 5 is a configuration diagram of a piezoelectric needle selecting device for a circular knitting machine showing an embodiment of the present invention,

6A is a sectional view of the piezoelectric needle selecting device for a circular knitting machine shown in FIG. 5, and FIG. 6B is a sectional view of a piezoelectric body.

7 (A) and 7 (B) are operation explanatory views showing an embodiment of the present invention, respectively.

FIG. 8 is a perspective view of a spherical body showing an embodiment of the present invention,

FIG. 9 is a sectional view of a rotating body showing an embodiment of the present invention,

FIG. 10 is an explanatory diagram of a circular knitting machine,

[Explanation of symbols]

 1 ... Piezoelectric needle selection device for circular knitting machine 22A ... Wiring 22B ... Wiring 23 ... Controller 24 ... Driver circuit 26 ... Switching mechanism 210 ... Piezoelectric element 2100 ... Block body

Claims (2)

[Claims] 1. A piezoelectric knitting device for a circular knitting machine, comprising a plurality of piezoelectric needle selecting devices for a circular knitting machine, the piezoelectric knitting device for a circular knitting machine having a plurality of piezoelectric elements around a knitting cylinder having a plurality of knitting needles. Is electrically connected, and an output signal corresponding to the pattern data is output from the driver circuit of the controller to the piezoelectric needle selecting device for the circular knitting machine to perform needle selection control of the circular knitting machine. Between a plurality of piezoelectric needle selecting devices for circular knitting machines arranged around a cylinder or between a plurality of block bodies composed of a plurality of piezoelectric needle selecting devices for circular knitting machines After electrically connecting the block bodies to each other, the driver circuit of the controller outputs the output signal to the piezoelectric needle selecting device for one circular knitting machine or the block body, and then for another adjacent circular knitting machine. Move to a piezoelectric needle selector or block And it outputs the output signal, successively each circular knitting machine piezoelectric needle selection device or piezoelectric needle selection device control method for a circular knitting machine and outputs the output signal for each block member. 2. The piezoelectric needle selector for a circular knitting machine according to claim 1, wherein a plurality of piezoelectric needle selectors for the circular knitting machine are provided between the respective devices of the piezoelectric needle selector for the circular knitting machine. An output signal is output from the driver circuit of the controller to the piezoelectric needle selecting device for the circular knitting machine or the block body by providing a switching mechanism between each block body of the block group composed of a plurality of block bodies. Output, then switch to another adjacent piezoelectric knitting machine for circular knitting machine or block so that an output signal can be output, and sequentially perform the switching operation to perform piezoelectric switching for each circular knitting machine. A piezoelectric needle selection device control system for a circular knitting machine, wherein an output signal is output for each needle selection device or block body.