JPH02259146A - Needle selector with adjusting function for knitting machine - Google Patents

Abstract

PURPOSE:To regulate both screwing positions and the tips of piezoelectric units to normal positions even if permanent strain is caused in the piezoelectric units by screwing a support unit for supporting the back end of the piezoelectric units to a fixed plate so as to enable positional regulation. CONSTITUTION:In a needle selector having a structure for engaging fingers 7 with the tips of piezoelectric units 11 and selectively engaging the above- mentioned fingers 7 with butts of a needle selecting jack, the support units 20 are engaged wit the back ends of the piezoelectric units 11 and the backs of the support units 20 are provided with each screw hole. A fixed plate 24 is provided at the backs of the support units 20 and lengthwise long holes are provided in the fixed plate 24. Screws 25 are passed through the holes to screw to support units 20 and the fixed plate 24. Since the holes are lengthwise long, the screwing position can be regulated.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a needle selection device for knitting machines, and in particular to a piezoelectric needle selection device that selects needles in a knitting machine by applying voltage to a piezoelectric body. A knitting machine with an adjustment function that makes it easy to fix and adjust the piezoelectric body and the fingers attached to the piezoelectric body to their normal positions when warping or the like occurs in the piezoelectric element r of the piezoelectric body. This invention relates to a piezoelectric needle selection device.

[Prior Art] and [Problems to be Solved] Needle selection devices are used in knitting machines such as circular knitting machines that knit socks and the like. Fig. 6 shows an example of a circular knitting machine. The formation cylinder 1 is provided with a selection 3I jack 2, and the jack 2
The knitting needles 3 are in contact with the upper part of the knitting needle 3 . Yarn 4 is supplied to the knitting cylinder 1. A needle selection device 5 is disposed at the bottom of the knitting cylinder 1, and the needle selection device 5 is connected to a controller (not shown), and the pattern knitting procedure stored in the storage device 6, such as a floppy disk, is sent from the controller. is sent in, and the formation 31:3 (7) l:h movement is performed. That is, the selection 31 device 5 is used to instantly transmit the pattern knitting procedure to the knitting side 3.

An example of the needle selection operation of the needle selection device 5 will be explained with reference to FIGS. 7 to 9.
A needle selection jack 2 with a butt 6 protruding from a large number of vertical vortices.
is inserted so that the knitting needle 3 in contact with the jack 2 is moved upwards, and the butt 6 of the jack 2 is selectively pressed by the finger 7 of the needle selection device 5 to remove the knitting needle 3.
Perform needle selection.

As schematically shown in FIG. 8, press the bar throat 0 of the jack 2 in the direction of the knitting cylinder 1,
When bringing the side opposite to the butt 6 of the jack 2 into contact with the knitting cylinder 1, the butt 7 of the jack 2 cannot engage with the thorn cam 8 of the cylinder 1, and therefore, the 1st side of the jack 2 The knitting 31 pieces 3 that are in contact with the Y part do not move, and as a result, the knitting needles 3 do not form stitches, but on the contrary, as shown in FIG.
When the butt 6 of the jack 2 is not pressed, the jack 2 engages with the lifting cam 8 to raise the knitting needles 3 that come into contact with the upper part of the jack 2, thereby knitting a stitch.

Conventionally, the mainstream of such needle selection devices has been electromagnetic ones in which the fingers are actuated by electromagnets, but there is a limit to the speed of knitting (response speed of the needle selection device) with these electromagnets. ,Also, the power consumption is large.
The needle selection device tends to be large.

On the other hand, conventionally, a voltage is applied to a piezoelectric element to curve a piezoelectric body having the piezoelectric element, thereby
A piezoelectric needle selection device that performs a needle selection operation using fingers has also been proposed (Japanese Patent Application Laid-Open No. 62-28451). This provides advantages such as fast response speed, low power consumption, and the ability to make the device smaller.

In this piezoelectric needle selection device, the present inventor has developed a 10th
proposed a needle selection device as shown in Figs.
The piezoelectric body 11, which is made of O, is made to move in a curved manner as easily as possible.Furthermore, a fulcrum is provided at a midway position between the tip and rear end of the piezoelectric body 11, which is made easy to make a bending motion in this way. It was designed to be provided.

That is, as shown in the examples in these figures, the spherical body 12Δ is attached to the tip 11A of the piezoelectric body 1, and the spherical body 12A is inserted into the open end 70 of the rear end 713 of the finger 7.
The tip 11Δ of the piezoelectric body 11 is made movable at the open end 70 of the rear end 7B of the finger 7, and the rear end 11) 3 of the piezoelectric body is also provided with a spherical body similar to that shown in L. 1
213, and insert the spherical body 12B into the full 130 of the piezoelectric body rear end support portion 13 of the support S, so that the rear end 11B of the :3
0, and furthermore, an appropriate position 16 between the tip end +1A and the rear end 113 of the piezoelectric body 11 is rotatably attached to the rotating body support part 14 of the support body S. It was clamped and fixed to the rotating body 15 to provide a fulcrum during J-delivery.

Further, move the finger 7 in the same direction as the piezoelectric body 11, that is, in a straight line, so that the tip end 11 of the piezoelectric body 1
I made it connect to Δ.

In the case shown in FIGS. 10 to 11, the piezoelectric body 11 and the fingers 7 are integrated with the support S, and can be inserted into the housing 50 of the needle selection device 5 (see FIG. 7) in a cartridge type manner. This is different from the one shown in Figure 7.

In this way, the tip end +1A and the rear end 111 of the piezoelectric body 11
3 is made movable following the bending movement of the piezoelectric body 11, and the tip part 11Δ and the rear end +
113, the rotation of the rotary body 15 should not damage the bending motion, and the rotary body 15 should sandwich the piezoelectric body 1, so that it has a fulcrum point midway. Therefore, it was possible to obtain a needle selection device that can significantly speed up needle selection compared to conventional devices. In addition, since the bending movement of the piezoelectric body 11 is not inhibited, the life of the piezoelectric body 1 is shortened, and since the fingers 7 and the piezoelectric body 1 are connected to the same curve 1], the device is also miniaturized. It also has many other advantages such as requiring only a low voltage to be applied to the piezoelectric element 10.
-I was able to do something.

However, if a fired ceramic piezoelectric element made of, for example, barium titanate is used as the piezoelectric element 10 in the piezoelectric body 11, the piezoelectric element IO may warp. In particular, the size of the piezoelectric element 10 may be increased with the intention of further increasing the needle selection speed, and the thickness may be reduced with the intention of lowering the applied voltage. tends to occur.

Due to this warping, for example, when the piezoelectric element 10 is facing downward, the finger 7 is oriented "-", and the tip 7Δ of the finger 7 is originally located at the center of the opening 160 of the stopper part 16 of the support body S. However, when the first part 160 is opened, the inside of the first part 160 must be properly interlocked in the tote direction. .

For this reason, the knitting action may be disturbed, so the piezoelectric body 11 and the finger 7 position, and the tip portion 7△ of the finger 7, may be disturbed.
Adjustment operations may be required to ensure proper positioning.

When making the adjustment, the present inventors first made the piezoelectric body 1
An attempt was made to adjust the piezoelectric body 11 by moving it up and down from both sides of the piezoelectric body 1, but such adjustment on both sides resulted in the piezoelectric body 11 being tilted, the width of the deflection being raised too much, and the screw adjustment being difficult. In the case of 1- adjustment from both sides, at least four screws are required, and there are many screw adjustment points, and it takes time to adjust the screws, and a set of screws is required to adjust the screws. , it was found that there were drawbacks such as the need for delicate adjustments.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a technique that does not have such drawbacks and allows easy adjustment.

The above and other objects and novel features of the present invention include:
It will become clear from the description of this specification i1F and the accompanying drawings.

[Means for Solving the Problems] The present invention provides a method for determining the tip and rear ends of a piezoelectric body and the intermediate position between the tip and rear ends of the piezoelectric body when a voltage is applied to the piezoelectric body. A needle selection device that can be moved in accordance with the movement, and by applying a voltage to the piezoelectric body, a finger attached to the tip of the piezoelectric body in the same direction as the piezoelectric body is actuated. In a needle selection device for a knitting machine that selects needles on the knitting side, a screw hole of an appropriate depth is provided on the back of the support that supports the rear end of the piezoelectric body, and both sides of the support are guided. ◇ Place the adjusting part that has a through-hole for adjustment into the support body and abut it on the back side of the support body, align the through-hole for adjustment of the adjustment part and the screw hole of the support body, and then By inserting an adjustment screw from the back side of the support and inserting the adjustment screw into the screw hole of the support, the -1-t and/or left and right positions of the support are fixed and adjusted. , below -L of the piezoelectric body and the finger and/or
Alternatively, in a needle selection device for a knitting machine with an adjustment function capable of adjusting the left and right positions, and in the needle selection device for a knitting machine,
A support body that supports the rear end of the piezoelectric body and has an adjustment hole is temporarily attached to the fixation plate so that the screw hole of the fixation plate having the screw hole and the adjustment hole of the support body are aligned,
Insert the adjustment screw into the adjustment hole of the support, and insert the adjustment screw into the fixed foot fixation plate screw hole marked vtj to fix and adjust the 1-bottom and/or left and right positions of the support. By doing so, the piezoelectric body J: and the finger! The present invention provides a needle selection device for a knitting machine with an adjustable function, which is capable of adjusting the horizontal position, horizontal position, and/or horizontal position.

[Function] To explain the function of the above-mentioned means of the present invention together with its outline, in the present invention, instead of adjusting from both sides of the piezoelectric body, a support that movably supports the rear end of the piezoelectric body is used. It is designed to adjust from the back side of the body, and by sliding the support body down L according to the warp of the piezoelectric body, the tip of the finger can be easily brought to the center of the stopper. I made it.

Therefore, compared to when adjusting from both sides of the piezoelectric body, there are fewer adjustment points, making it possible to make adjustments in a shorter time, making it possible to make adjustments by hand, and making adjustments possible with rough adjustments. , I was able to make it extremely easy to adjust.

[Example] Next, embodiments of the present invention will be described based on the drawings.

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 shows the same perspective view, but the parts shown in FIG. 1 are omitted. .

As shown in these figures, the tip portion 7A of the finger 7 is partially projected from the opening 160 of the stopper portion 16. The opening +60 is configured to have a width, size, etc. corresponding to the process in which the finger 7 moves upward.

The finger 7 follows the bending movement of the metal bullet 9 caused by the piezoelectric element 10, and the butt (for finger (butt) 6 to form or release the engagement.

The tip 7Δ of the finger 7 comes into contact with the bat 6.

In this embodiment, the tip 7Δ of the finger 7 is configured in a chevron shape so that it can come into contact with the bat 6 when the cylinder 1 rotates in both forward and reverse directions. ing.

A hole is provided in the rear end portion 713 of the finger 7 in the width direction of the finger, and holes are also provided in both left and right end walls of the finger fixing portion 17. 2), insert both ends of the shaft into the holes in the left and right side walls, insert screws 18 from both ends of the shaft, and fix the finger 7 to the finger fixing part 17.

The end of the spherical body 12Δ is filled with a tfli part,
The tip 11Δ of the piezoelectric body 11 is inserted into the vortex and fixed.

The rear end 1113 of the piezoelectric body 11 is inserted into the groove at the end of the spherical body 12B having a similar configuration and fixed.

The tip 11Δ of the piezoelectric body 11 to which the spherical body 12Δ is attached
The side is inserted into the open end 70 of the rear end 713 of the finger 7 and is clamped and connected to the open end 70 .

The spherical body 12Δ can rotate within the open end 70 of the rear end 7B of the finger 7, and the tip 11Δ of the piezoelectric body 11 can move by 1J.

A midway point i between the rear end 1213 and the tip 11Δ of the pressurized body 11 is held between the rotating body 15 attached to the fulcrum 14 midway.

The rotating body 15 used in this embodiment is provided with an l'f through hole that is large enough to allow the piezoelectric body 11 to be inserted therethrough. body 1
1 is held between rotating bodies 15.

Both ends of the rotating body 15 are rotatably installed by passing screws 19 through holes provided in the fulcrum portion 14 midway. It is better to fix the piezoelectric body 11 in the 11 through holes of the rotary body 15 with adhesive or the like. , 1 may not be fixed, but may be simply held between :11. In any case, the rotating body 15 is installed by the screw 19 and rotates.

- between the tip end 11A and the rear end 11[3 of the piezoelectric body 11]
As described in 1-, the intermediate position held by the rotary body 15 is important, and the piezoelectric body 11 tries to curve around this point, and the curve of the culm finger 7 approaching the finger 7 becomes faster, and the amplitude becomes smaller. , and also produces torque,
The applied voltage can also be lowered, but if it is too close, the torque may not be produced.

On the other hand, when moving away from the finger 7, the opposite phenomenon occurs, and the amplitude increases, but the torque decreases.

Therefore, it is necessary to select an appropriate position, and it is preferable to have a form that allows the appropriate position to be selected.

The rear end portion 113 of the piezoelectric body 11 with the spherical body 12*3 attached thereto is inserted into the vortex portion 21 of the support body 20.

Since the spherical body 12B rotates within the γ14 portion 21 of the support body 20, the rear end portion 1113 of the piezoelectric body 11 can move by 111 degrees.

In the above case, it is preferable to provide as much space as possible between the spherical body 12I3 and the wall of the vortex portion 21 of the support body 20 to facilitate adjustment.

1- A perspective view of the support body 20 is shown in FIG.

As shown in FIG. 3, two tapped holes 2222 of appropriate depth are provided on the back surface of the support 20.

As shown in FIG. 4, the support 20 is guided 23.23
interpose between

The spacing between the two temporary guides 23 and 23 is made to approximately correspond to the width of the support 20, so that the support 20 does not have an inclination.

The support body 20 is guided along the inner wall surface of the guide +s2:3.23.

In FIG. 4, the axial l-temporary 24 that abuts the back surface of the support 20 and the screw 25 used for adjustment are shown separately from the guide and the support 20. As shown in FIG.

As shown in the figure, the adjustment plate 24 has a plurality of adjustment through holes 26 formed therein.

The adjustment through hole 26 has one adjustment screw 25.
．． Make the hole long in the vertical (J) direction so that it can be moved downward.

The adjustment through holes 26 are connected to each adjustment plate 24.
It is provided so as to penetrate in the thickness direction.

The adjustment through-holes 26 are provided in a staggered manner in multiple stages in the vertical direction, two each corresponding to the number of screw holes 22 drilled in the support body 20.

During adjustment, the adjustment plate 24 is brought into contact with the back surface of the support 20, and the adjustment screw 25 is inserted into the adjustment plate 24.
through the adjustment through hole 26, and adjust the elongated hole 26 as appropriate.
The threaded part 250 at the end of the adjustment screw 25 is inserted into the threaded threaded hole 22 of the support 20, and the support 20 is inserted into one guide +1), i2.
:3,2 :(Fixed inside.

As a result, there is a warp in the electric element j'IO of the piezoelectric body 11, and the piezoelectric body 11 and the finger 7 rub in a straight line, and the tip 7△ of the finger 7 touches the opening of the part 6 of the flange 1. 16
5, another embodiment of the invention is shown in FIG.

In this embodiment, adjustment holes (through holes) 26, 26 of an appropriate diameter are provided on the back surface of the support 20'. The adjustment holes 26 and 26 are elongated holes so that the screws 25 for Asyas 1 to 25 can be moved in the 4-ground direction.

! A plurality of screw holes (through holes) 22 are provided in each of the fixing plates 24, 24 at appropriate intervals in the -1F direction.

A support 20' is interposed between the two fixing plates 24 and 24 by the guides of the two fixing plates. .

The gap (X) between the two fixed plates 24 and 24 is
The width (Y) of the support 20'
Avoid tilting the surface.

During adjustment, insert the adjustment screw 25 into the adjustment hole (through hole) 26.
A knob 27 is attached to the back of the support body 20', and when the appropriate position is determined, a knob 27 is attached to the back of the support body 20'. Tighten. The support 20' can thereby be adjusted.

[Effects of the Invention] According to the present invention, the number of adjustment points is small, the adjustment can be made in a short time with 11 functions, the adjustment can be made with two hands, and the adjustment can be made with a rough adjustment, making the adjustment extremely easy. was completed

[Brief explanation of drawings]

Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 is a perspective view showing an embodiment of the invention, Fig. 20 is a perspective view of a support body showing an embodiment of the invention, and Fig. 4 is a perspective view showing an embodiment of the invention. 1 - Explanatory drawing showing an embodiment of the present invention, FIG. 5 is an explanatory drawing showing another embodiment of the invention, and FIG.
The figure is an explanatory diagram of the knitting machine, Figure 7 is a sectional view of the piezoelectric needle selection device, Figures 8 and 0 are operational diagrams of the same device, and
0 is a perspective view of the piezoelectric needle selection device, and FIG. 11 is a sectional view of the same device. 7 ・ Δ ・ 1 13 ・ 22 ・ 23 ・ 24 ・ 24 ・ 25 ・ 26 ・ ・Finger・Piezoelectric body・Piezoelectric body tip・Piezoelectric body rear end・・Support body・Screw hole・Temporary guide (guide part)・Temporary adjustment (adjustment part) ・Fixing plate ・Adjustment screw ・Through adjustment hole diagram

Claims (1)

[Claims] 1. The front end and the rear end of the piezoelectric body, as well as the intermediate position between the front end and the rear end, are movable in accordance with the movement of the piezoelectric body when a voltage is applied to the piezoelectric body. This needle selection device is capable of selecting knitting needles by applying a voltage to the piezoelectric body to actuate a finger attached to the tip of the piezoelectric body in the same direction as the piezoelectric body. In the needle selection device for a knitting machine, a screw hole of an appropriate depth is provided on the back surface of a support body supporting the rear end of the piezoelectric body, and both sides of the support body are installed in the guide part. Abut the adjustment part having the adjustment through hole on the back side of the support, align the adjustment through hole of the adjustment part with the screw hole of the support, and then adjust the adjustment part from the back side of the adjustment part. By inserting a screw and inserting the adjustment screw into the screw hole of the support to fix and adjust the vertical and/or horizontal position of the support, the piezoelectric body and fingers can be adjusted vertically and/or horizontally. Or a needle selection device for knitting machines with an adjustable function that allows the left and right positions to be adjusted. 2. The tip and rear ends of the piezoelectric body, as well as the intermediate position between the tip and rear ends, are made movable in accordance with the movement of the piezoelectric body when a voltage is applied to the piezoelectric body. A knitting needle selection device that selects knitting needles by applying a voltage to the piezoelectric body to actuate a finger attached to the tip of the piezoelectric body in the same direction as the piezoelectric body. In a machine needle selection device, a support body that supports the rear end of the piezoelectric body and has an adjustment hole is fixed so that the position of the screw hole of the fixing plate having the screw hole and the adjustment hole of the support body are aligned. Attach it to a plate, insert the adjustment screw into the adjustment hole of the support, and insert the adjustment screw into the screw hole of the fixing plate to fix the vertical and/or lateral position of the support. A needle selection device for a knitting machine with an adjustable function, which allows adjustment of the vertical and/or horizontal positions of the piezoelectric body and fingers.