JPS6392762A - Yarn guide needle displacing apparatus in knitting machine - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an individual displacement device for yarn guiding needles in a knitting and loom.

[Conventional technology and its problems]

Conventionally, in a Raschel machine, which is a type of warp knitting machine among knitting and looms, each of the thread guiding needles is attached to a guide bar provided to feed warp threads or pattern threads to the knitting section, corresponding to the knitting needles. It is well known that knitting devices are known in which the knitting needles are individually controlled and the position of action on the knitting needles is changed for each knitting course. A machine equipped with these devices is called a Jacquard Drashel machine.

The above-mentioned Jacquard Drashel machine can be roughly divided into a mechanical Jacquard head, and a Jacquard card set in the Jacquard head is connected to a dropper that acts on a yarn guiding needle (Franchin guide). A system for selectively controlling the vertical movement of the vertical hand (Patent application 1987-1243
67), and a system in which the dropper is directly controlled by electromagnetic selection means such as a solenoid instead of a mechanical Jacquard head (Japanese Patent Application No. 15338/1982).

However, in any of the above systems, the controlled thread guiding needle is directly or indirectly connected to a mechanical driving means such as a jacquard head via a connecting wire, and this connecting wire is connected to the thread guiding needle. The guide bars are placed in parallel and suspended above the guide bars in close contact with each other in the direction of the knitting needle rows, making it easy to thread the warp or pattern threads of other guide bars or insert threads during knitting. , it is very inconvenient to be obstructed by the connecting wire, and the position adjustment work for the connecting wire at the time of installation of the knitting machine is also very time-consuming. The maximum number of rows that could be installed was two.

[Problem to be solved by the invention]

The present invention solves the above-mentioned drawbacks, and uses a member that can be connected to the yarn guiding needle or displaced by energizing a control member close to the yarn guiding needle, without using parallel connecting wires, to change the position of action of the yarn guiding needle with respect to the knitting needle. It is an object of the present invention to provide a device for individually displacing thread guiding needles.

[Means for solving problems]

The present invention is a knitting loom equipped with a guide bar equipped with a plurality of thread guide needles as a displacing device for thread guide needles in a knitting loom, in which the tip of the thread guide needle is moved to the position of the tip of an adjacent thread guide needle when energized. A control member is provided in connection with or in close proximity to each of the thread guide needles.

[Effect]

The thread guide needle itself is bent by the energization action, and its tip is displaced to the tip position of the adjacent thread guide needle, so the electrical wires for energization can be arranged in a group, so the entire width above the guide bar can be There are no connecting wires as obstacles across the
The guide bar can be easily operated from the front to the rear or from the rear to the front.

〔Example〕

Next, an embodiment of the present invention will be explained based on the drawings. Figs. 1 and 2 show an embodiment of a displacing device for a thread guide needle, and
0) is a guide bar, one end of which is tensioned by a spring (11), and a rod shaft (11).
The guide bar (10) is connected to the pattern wheel (13) via the pattern wheel (12), and (14) is a knitting needle, and the guide bar (10) is connected to the knitting needle (14) by rotation of the pattern wheel (13).
A reciprocating motion or lapping is performed in the column direction. (15a)
.

(15b) is a yarn guide needle having a hole at the tip for guiding the warp fed from a warp winder (not shown), and these yarn guide needles (15a) and (15b) are used as control members. The piezoelectric actuator (16) is connected to and fixed to the piezoelectric actuator (16). This piezoelectric actuator (16) is immovably fixed at one end to a holding portion (17) projecting to one side in the upper longitudinal direction of the guide bar (10). The piezoelectric actuator has a laminated bimorph structure and uses piezoelectric ceramics as a material, and as shown in Figs. 3 and 4, there are 3
The conductive wires (18a), (18b), and (18c) are connected to each other, and the conductive wires (18
a), (18b), and (18c) are brought together at the upper end of the guide bar (10) and connected to known control means through each conduit (19). That is, an amplifier (20) is connected to a controller (21), and (22) is a pattern storage medium.

Next, the operating state of the embodiment device configured as described above will be explained.First, based on the pattern information signal from the pattern storage medium (22), the amplifier (2o
) through each conduit (19) to the suture guide needle (1
Each conducting wire (18a), (1
8b), but at this time, if the conductor (18a) is controlled so that it is on the ■ side and the conductor (18b) is on the O side, expansion and contraction strain occurs due to spontaneous polarization inside the actuator (16), and the As shown in Figure 5, the actuator (16
) is bent to become an actuator (16a), and its tip end is connected to the stopper (9) of the stoppers (9) provided below the guide bar (10) in a manner corresponding to the number of thread guiding needles (15). The tip of the thread guiding needle (15a) that is in contact with the thread guiding needle (15a) and thereby connected to the thread guiding needle (15a) is connected to the adjacent thread guiding needle (15a).
5b) and is displaced in synchronization with the wrapping of the guide bar (1o). and.

When the power is removed, the expansion and contraction distortion disappears and the actuator (16
a) returns to the original position. In this way, by controlling the energization or de-energization of each actuator in synchronization with knitting according to the pattern configuration, it becomes possible to displace the thread guiding needle between necessary knitting needles.

In the above embodiment, since the yarn guide needle can be displaced in only one direction, knitting can be performed with the yarn guide needle always in contact with either the left or right stopper, so that stable displacement movement is possible. As a result, it becomes suitable for high-speed operation based on a normal knitting structure.

The example shown in FIG. 6 is a device that can displace the thread guide needle to any position of the adjacent thread guide needles on the left and right, and the left and right sides of the stopper (9) are tilted to form a triangular cross-sectional shape. In this case, the thread guide needle (15) is bent and the thread guide needle (15) is bent.
15a), as in the previous embodiment, the conductor (18
You can turn on the wire so that a) is on the ○ side and the conductor (18b) is on the ○ side, or bend it to the left and connect it to the thread guiding needle (L5d).
To do this, place the conductor (18c) on the
) should be on the e side, and the expansion/contraction strain generated in the actuator (16) acts in the opposite direction and bends, causing the stopper (2
0G), and the tip of the thread guide needle (15d) can be displaced to the position of the thread guide needle (15c) adjacent to the left side.

This makes it possible to develop a handle structure that was previously impossible.

Next, another embodiment of the device of the present invention will be explained with reference to FIGS. 7 and 8. FIG. 7 is a side sectional view of the embodiment device, and FIG. 8 is a sectional view taken along the line B-B in FIG. 7. and (10a
), (10b) are guide bars composed of two rows and one set, and (23a).

(23b) is a thread guide needle, which is composed of a thin steel piece having an elasticity of 1, and the tips of each thread guide needle (23a) and each thread guide needle (23b) are offset from each other by one pitch of one knitting needle (14). Each of the upper end portions is fixed to the holding portion (24a) or the holding portion (24b), and the lower portion is a free end portion.

(25a) and (25b) are electromagnetic actuators as control members, and each guide bar (10a).

The lower end of (10b) is formed to protrude in a comb blade shape in the longitudinal direction, and one contact portion (28a), (28b) of each actuator (25a), (25b) has an inclined side surface shape,
Also, the other contact portion (29a).

(29b) is coated with non-conductive paint. Also, the actuator (25a) = (25b) has a conductor (26
a), (26b), conductor (27a).

(27b) is drawn out, and the drawn out conductive wires are collected into several conduits as shown in FIG. 2, collected in an amplifier, and further connected to a controller. Also, the contact part (28
a), (28b), (29a).

(29b) has the function of a stopper and provides an accurate displacement position to its tip when the thread guide needle comes into contact with it.

The above is the configuration of another embodiment of the device.Next, its operating state will be explained. In FIGS.
), and when the actuator (25a2) is energized and magnetized, the needle (23
Process a) is pulled by the abutment part (28az) due to the generation of suction force and is bent and adsorbed, but at this time, the yarn guide needle (23a,) moves to a position displaced by one pitch of the knitting needle (14). Then, when the electricity is turned off, the thread guiding needle (23a□) returns to its original position. Of course, the thread guide needle (2) on the other guide bar
3b) has a similar effect. In addition, in this embodiment device, as in the previous embodiment device, by selecting energization or non-energization in synchronization with one knitting according to the pattern configuration,
A desired displacement can be given to the thread guide needle.

Although the above embodiments relate to warp knitting machines, the displacement device of the present invention can also be applied to looms that do not use heddles and have guide plates as yarn guide needles inserted into the warp yarns. .

〔Effect of the invention〕

As described above, the present invention provides a knitting and loom in which the thread guide needles can be individually displaced, and which is necessary for the conventional system in which the needles are directly driven by a dropper or the thread guide needles themselves. The configuration does not require a connecting wire corresponding to each thread guide needle, and the configuration uses electrical energization control, which eliminates the need for a connecting wire.As a result, it is possible to use individually movable thread guide needles or guide plates. Since it is possible to provide three or more rows of guide bars, it is possible to perform jacquard knitting or weaving with more diverse knitting structures or weaving structures, and it is also possible to perform jacquard knitting or weaving with more diverse knitting structures or weaving structures. This eliminates the need for adjustment work, and also makes it easy to perform electrical plug-in work, which has the effect of improving one-work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view of a knitting part of a warp knitting machine including an embodiment of the displacement device of the present invention, and FIG. 2 is a partial perspective view showing a control system of the displacement device of the embodiment of the present invention. It is an explanatory diagram including a figure. FIG. 3 is a front view showing a section of a part of the device of the embodiment. FIG. 4 is a sectional view taken along line A-A in FIG. 3. FIG. 5 is a front view showing an example of the action of the piezoelectric actuator, FIG. 6 is a front view showing an example of the action of the piezoelectric actuator, and FIG. 7 is another embodiment of the displacement device of the present invention. FIG. 8 is a front view of a portion of the guide bar shown in FIG. 7, and FIG. 8 is a sectional view taken along the line BB of the guide bar shown in FIG. Explanation of symbols (10) = (10a) - guide bar (15),
(15a), (15b).

Claims (4)

[Claims] (1) In a knitting loom equipped with a guide bar equipped with a plurality of yarn guiding needles, each of the yarn guiding needles has a control member that displaces the tip of the yarn guiding needle to the tip position of an adjacent yarn guiding needle when electricity is applied. A displacement device for a yarn guiding needle in a knitting and loom, characterized in that it is connected to or adjacent to a needle. (2) The control member is comprised of a voltage actuator that is distorted and bent in one direction when energized, and returns to its original position when energized is removed. Displacement device for yarn guiding needles in the described knitting and loom. (3) The control member is constituted by an electromagnetic actuator that magnetizes when energized, deflects and attracts the thread guide needle in one direction, and returns to the original position when released. A displacement device for a yarn guiding needle in a knitting loom according to item (1). (4) The guide bar has two rows as a set, and the tip of each yarn guide needle has its original position at a position shifted by one knitting needle pitch. A displacement device for a thread guide needle in a knitting and loom machine according to item (3).