JPS59199850A - Electromagnetic needle selector of electronic patterning circular knitting machine - Google Patents

Abstract

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

Description

Detailed Description of the Invention (a) Industrial Application Field The present invention relates to an electromagnetic needle selection device in an electronic patterned circular knitting machine, an electronic patterned sock knitting machine, etc., and particularly relates to a needle selection element of a knitting machine. The shack is a multi-stage type, and is applicable not only to the scooping type but also to the press type.The purpose is to speed up and stabilize the needle selection action, and simplify the structure to facilitate parts processing. , provides an improved electromagnetic needle selection device for an electronic pattern circular knitting machine, which is easy to assemble, can be manufactured at a very low cost, and can be used as a unit in conventional mechanical machines. It is something to do.

(B) Prior art Various electromagnetic needle selection devices have been developed for electronic patterned circular knitting machines, electronic patterned sock knitting machines, etc., but the needle selection element, the jack, is a single-stage type. There is a multi-stage type, and there are two types of needle selection methods: a press type and a scoop-up method.The Shack single-stage is only a press type, and each needle is selected using an electromagnetic device, so there is a limit to the needle selection speed. Reeds, the passage time of one needle is 1
．． The maximum speed is 2 ms, and higher speeds have not been achieved. On the other hand, the multi-stage type includes a press type and a scooping type, but both are expensive due to the difficulty of parts processing and assembly due to the complexity of the structure, and the difficulty of adjustment that requires maintaining a high degree of accuracy. An even bigger drawback is that there is a problem with the needle selection speed, and the reason for this is that although the operating time of the needle selection lever is required to be shortened,
The problem lies in the fact that we have almost reached a point where we are satisfied with this.

In other words, the butt of the shack is multi-stage, and in both the press method and the scooping method, the time during which the needle selection needle acts on the butt of the shack is determined, and the method for increasing the speed of needle selection is to use the shack's nozzle. Either increase the number of steps or increase the operating speed of the needle selection lever.

In this case, increasing the number of butt stages of the jack not only has the disadvantage of increasing the length of the jack, but also increases the length of the knitting machine cylinder, table support, etc., and also increases the number of needle selection stages. This has the disadvantage that the number of stages of electromagnetic equipment increases, which increases the cost accordingly.

(C) Purpose of the Invention The present invention solves the drawbacks of the prior art in electronic patterned circular knitting machines and electronic patterned sock knitting machines. The operation time of the needle selection lever is extremely shortened to increase the needle selection speed, and by stabilizing all needles during operation, facing direction, and simplifying the structure, parts processing and assembly are facilitated, resulting in extremely high performance. To provide an improved electromagnetic needle selection device for an electronic patterned circular knitting machine and an electronic patterned sock knitting machine that can be manufactured at low cost.

B) Structure of the Invention Examples of the present invention will now be described in detail with reference to the drawings. As mentioned above, this electromagnetic needle selection device is used in electronic patterned circular knitting machines and electronic patterned circular sock knitting machines. It has a configuration that is also suitable for knitting machines.

In FIG. 1, the knitting machine cylinder 1 rotates about its axis (not shown) in the direction of the arrow. A groove 2 for needles and jacks, which are knitting elements, is provided on the outer periphery of cylinder 1, and needles and jacks (only shack 3 in the figure) slide in the vertical direction of cylinder 1 within these grooves 2. It is arranged so that it can move freely. Jack 3 is a multi-stage type, so the bat 3-
1 are arranged protruding from the outer periphery of the cylinder 1 at certain intervals.

As shown in FIGS. 1 and 2, the electromagnetic needle selection device according to the present invention is comprised of a pick-up stand 4 for a needle selection lever 8 and a pick-up body 18 for an electromagnet. The mounting base 4 of the needle selection lever is L-shaped, and the horizontal portion 4-1 is fixed to the table 5 of the knitting machine with screws 6. The vertical part 4-2 of the mounting base 4 of the needle selection lever 8 is provided with a plurality of rows of horizontal grooves 4-3 at equal intervals, and vertical grooves 4-4 are provided in the center of the vertical part 4-2 and One location will be provided. A small-diameter hard pin 7 is inserted into this vertical groove 4-4 and fixed with a presser metal 10 and a screw 9.

The needle selection lever 8 has a flat shape, and has an inclined portion 8-1 at the tip that allows the butt 3-1 of the jack 3 to act.
The medium heat part has the small diameter pin hole 8-2, and the base end has a rear end base part 8-3 for holding three permanent magnets.

The needle selection lever 8 is connected to a plurality of horizontal grooves 4 in the vertical portion 4-2 of the mounting base 4.
-3, the small diameter hard pin 7 is inserted through the fulcrum hole 8-2 of the needle selection lever 8, and the needle selection lever 8 is arranged so that it can swing around the small diameter hard pin 7 as a fulcrum. to be established. There is a needle selection lever behind the vertical part 4-2 of the mounting base 4 of the needle selection lever 8! -8 with stopper 11.1 on both sides
Fix with 2 full screws 13 and 14 respectively. Each stopper 1
1.12 tips 11-1.12-1 are arranged at predetermined intervals in order to control the swinging stroke of each needle selection lever 8. Further, the rear end of the needle selection lever 8 has a semi-circular base 8-3, and three permanent magnets 15°16.17 are attached to the rear end base 8-3 using a two-component adhesive ( Figures 3 and 4
In the figure, all the polarities are alternately (
In this embodiment, an S pole is placed in the center and N poles are placed on both sides on the surface) and are fixed at predetermined intervals.

The shape of the permanent magnet can be either square or round, but in order to achieve the holding force effect described later, a square shape is preferable, and permanent magnets 15, 16, and 17 Is the interval related to the swinging stroke of the selected lever? In this embodiment, it has been confirmed through experiments that a ratio of 3/8 to the outer diameter of the permanent magnet is good. Ta.

Next, as shown in FIG. 1 and FIG.
The electromagnet mounting body 18 attached at 9 is made of a non-magnetic material (aluminum material is used in this embodiment) and is configured to interrupt the magnetic circuit of each electromagnet 20, which will be described later.

A vertical portion 18-1 of the electromagnet mounting body 18 is provided with a plurality of vertically arranged grooves 18-2i at equal intervals, facing the permanent magnet surface of the needle selection lever 8. The same pitch as the horizontal groove 4-3 provided in the vertical part 4-2 of the lever receiving stand 4 (
). The electromagnet 20 is composed of a yoke 21, a right electromagnetic coil 22, a left electromagnetic coil 23, a right core 24, a left core 25, and nuts 26 and 27.
The yoke 21 is fixed to a plurality of grooves 18-2 provided vertically in the vertical portion 18-1 of the electromagnet mounting body 18 by screws 28 in the same number as the needle selection levers 8.

The electromagnet 20 has a right electromagnetic coil 22. The right core 24, the left electromagnetic coil 23, and the left core are assembled as a pair in a housing, completely parallel to each other, as shown in FIGS. 3 and 4, the right core 24, the left core 25
The threaded portions 24-2, 25-2 of the yoke 21 are fixed within the recessed portions 21-1, 21-2 of the yoke 21 by nuts 26.27, respectively. Tips of right core 24 and left core 25 2.4-1.
25-1 are bent so as to face each other and arranged at a predetermined interval. In addition, the front surfaces of the tips 24-1, 25-1 of the right core 24 and left core 25 have three permanent magnets 15 fixed to the base flat head 8-3 of the needle selection lever 8,
16 and 17 with a predetermined gap therebetween.

The right electromagnetic coil 22 and the left electromagnetic coil 23 are connected in series, and their lead wires 29 and 30 are connected to an electronic pattern control device of the knitting machine (not shown).

The upper plate 31 in FIGS. 1 and 2 is for maintaining the distance between the upper part of the needle selection lever mount 4 and the upper part of the electromagnet mount 18, and is fixed with screws 32. The release lever 33 and support column 34 in FIG. 1 are used to mechanically stop the needle selection lever 8 while the knitting machine is knitting the entire garment product, and since it is not related to the gist of this application, an explanation regarding this will be omitted. Omitted.

(E) For production The operation of the electromagnetic needle selector according to the present invention will be explained below.

First, in FIGS. 3 and 4, from the electronic pattern control device of the knitting machine (not shown), a signal is sent to both electromagnetic coils 22 and 23 according to the pattern via the 'J-1- wire 29.30. An alternating excitation signal is sent.

To explain from the example of FIG. 3, for the right electromagnetic coil 22, S
When the N pole is excited for the left electromagnetic coil 23, an S pole magnetic field (hereinafter abbreviated as S) is generated at the tip 24-1 of the right core 24.
occurs, and an N pole (hereinafter abbreviated as N) is generated at the tip 25-1 of the left core 25, and the permanent magnet 15 fixed to the tip (S) of the right core 24 and the rear end base 8-3 of the needle selection lever 8. (to) and the permanent magnet 16 (to) attract each other, and the front part of the left core 25 and the permanent magnet 16 (to
) are attracted to each other, and the tip of the left core 25 and the permanent magnet 17 (N) cause a repulsive action, causing the needle selection lever 8 to move rapidly in the direction of the arrow shown in the figure with the small diameter hard pin 7 as the full fulcrum. to sway. Then, the needle selection lever 8 abuts against the tip 12-1 of the stopper 12 attached to the needle selection lever mounting base 4, and the swinging operation is completed. After the swinging operation is completed, the needle selection lever 8 is moved to the right core 24 (
S), the left core (to) and the rear end base 8-3 of the needle selection lever 8
Permanent magnet 15 (to) and permanent magnet 16 (S) through
This forms a magnetic closed circuit as shown by the dotted line, and stabilizes the stationary position of the needle selection lever 8 after the swinging is completed, and as shown in FIG. The butt 3-1 of the jack 3 is selectively activated.

Next, to explain using the example of Fig. 4, compared to Fig. 3,
The polarity of the core is reversed, and therefore the opposite effect is performed. When the S pole of the left electromagnetic coil 23 is excited and the N pole of the right electromagnetic coil 22 is excited, the left core 2
5 tip 25-1. K Magnetic field of S pole (hereinafter abbreviated as S)
occurs and an N-pole magnetic field (hereinafter N
) occurs, and the tip 25-1 of the left core 25 (S)
and the permanent magnet 17 fixed to the rear end base 8-3 of the needle selection lever 8 attract each other, and the tip 24-1 of the right core 24
(S) and the permanent magnet 16 (S) of the needle selection lever 8 attract each other, and the tip 24-1 (S) of the right core 24 and the permanent magnet 15 (S) cause a repulsive action, and the needle selection lever 8 rapidly swings in the direction of the arrow in FIG. 4 using the small diameter hard pin 7 as a fulcrum. Then, the needle selection lever 8 abuts against the tip 11-1 of the stopper 11 attached to the needle selection lever mounting base 4, and the swinging operation is completed. After the swinging operation is completed, the needle selection lever 8 moves through the yoke 21 to the left core 25 (S), the right core (toward), and the rear end base 8-3 of the needle selection lever 8, as shown in FIG. The permanent magnet 17 (H) and the permanent magnet 16 (S) constitute a magnetic closed circuit as shown by the dotted line, and stabilize the stationary position of the needle selection lever 8 after the swinging is completed, and select the needle as shown in FIG. 6. The tip inclined portion 8-1 of the lever 8 maintains its position without being acted upon by the butt 3-lf of the jack 3.

Regarding the operating time of the needle selection lever, in the prior art, Japanese Patent Application No. 101242/1983 and Japanese Patent Application No. 58/1983 filed by the present applicant
9955 has a limit of 9ms to 10m5,
From the example of a sock knitting machine, if the number of stitches is 240, and the number of jack stages is set to 16, the rotation speed of the 7 rings will be 22 O.
r.

p, m to 23 Or, p, m was the limit, but the needle selection lever according to the present invention has an operation time of 45 to 5 ms, which is twice as fast as the conventional method, 7S stitches, 240 stitches, and no junk stages. If you set it to 16 stages, the speed will increase to more than 3 rpm, and the magnetic circuit with the core of the permanent magnet and electromagnet will
This is because the needle selection lever is held securely when it is activated and when it is not activated, and it is able to maintain stability and hang. If the number of needles is 24.0 and the cylinder rotation speed is k22 Orpm or more, the number of jack stages will be 8, which has the advantage of shortening the jack length, cylinder length, etc., and enabling reasonable usability. Of course, it is possible.

1. The operation of the needle selection lever in the present invention has been described mainly in the case of a quick-release type, but it is also possible to easily change the design so that the needle selection lever operates in a full press type. Therefore, this method naturally falls within the technical scope of the present invention.

(F) Embodiment As an embodiment of the present invention, as shown in FIGS. 1 to 7, the tip 8-1 of the needle selection lever 8 or the rosette of the shack 3 protruding from the circumferential surface of the cylinder 1) 3-1i Although the configuration of the method of raising the needle by two degrees has been described, the tip portion 8-1 of the needle selection lever 8 as shown in FIGS. 8 to 10,
In the same operation, by pushing the end face of the butt 3-1 of the jack 3, the jack 3 rides on the raising cam and is also raised. −
As another embodiment shown in 1, the arrangement of the N and S poles of the rear end base 8-3 of the needle selection lever 8 is changed to the vertical direction, and when the tip of the needle selection lever is raised, the jack 3 is released. 3-1'i A type in which the needle is pushed in by sliding along an inclined surface is shown. They are similar in that the needle selection operation is performed by converting the circuit and operating the needle selection lever to operate the tip 8-1 around the fulcrum.

(g) Effects of the Invention The device of the present invention not only improves needle selection speed and rationalizes it in circular knitting machines, especially electronic board sock knitting machines, but also ensures the needle selection action and stabilizes the product. The device has the following characteristics: it has a simple configuration, is easy to manufacture, and can be provided at low cost.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and Fig. 1 is a plan view of the main part of a circular knitting machine in which the scoop-up type device is installed, Fig. 2 is a longitudinal side view of the same, and Figs. 3 and 4. 1 shows the arrangement of the permanent magnet at the base of the needle selection lever and the magnetic pole of the core with electromagnetic coil.
Figures 5 and 6 are plan views showing the operation of the needle selection lever, Figure 7 is a partial perspective view of the needle selection lever and jack, and Figure 8 is a press-type needle selection lever and Figure 9 is a plan view of the main part of the tank, Figure 10 is a longitudinal side view of the same, and Figure 10 is the same.
The perspective views of parts, Figures 11 to 13, similarly represent the plane, side surface, and slope of a part of the other embodiments. Explanation of symbols 21 1...Knitting cylinder 2...Groove 3...Jack 4...Mounting stand 5...Knitting machine table 6...Screw 7 ゛I point pin
8... Needle selection lever 9... Screw 1o
... Push metals 11, 12... Stoppers 15, 16.
17... Permanent magnet 118... Electromagnet mounting body 2o... Electromagnet 21... Yaw 22, 23... Electromagnetic coil 24, 25... Core 29, 30... Lead wire 33... Release lever 34... Prop 35.
...Raising cam Fig. 1 Fig. 2 Fig. 3 v Fig. 4 9 302 Fig. 5 Fig. 8 Fig. 9 Fig. 10 Fig. 11 □

Claims (1)

[Claims] 1. Three permanent magnets with different polarities are arranged in parallel at the base of a needle selection lever whose tip part acts on the butt of a needle selection jack attached to a needle barrel, and are opposed to the permanent magnets. An electromagnetic needle selector for an electronic pattern circular knitting machine characterized in that an electromagnetic coil is installed in each of the two cores to enable arbitrary alternating excitation, and the tip of a needle selector lever is actuated by changing the polarity of the core. Device. 2. An electromagnetic needle selection device for an electronic pattern circular knitting machine according to claim 1, wherein the base of the needle selection lever is formed in a planar arc shape. 3. Electromagnetic needle selection for an electronic patterned circular knitting machine according to claim 1, in which all permanent magnets with an S pole and an N pole are installed in the center of the surface of the base of the needle selection lever, which has a planar arc shape. Device. 4. An electromagnetic needle selection device for an electronic pattern circular knitting machine according to claim 1, wherein the tip of the needle selection lever is formed on an inclined surface that completely scoops up the butt of the knitting machine. 5. An electromagnetic needle selection device for an electronic patterned circular knitting machine according to claim 1, wherein the tip of the needle selection lever is a protruding end that abuts against and pushes into the hole of the jack. 6. Electromagnetic needle selection for an electronic patterned circular knitting machine according to claim 1, wherein the tip of the needle selection lever has an inclined surface on which the butt of the shack slides and a protruding end into which the butt of the jack is fully pushed. Device.