JP2560927Y2 - Jacquard machine needle selection device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a needle selecting device for an electronic jacquard machine of a loom.

[0002]

2. Description of the Related Art A conventional needle selection device of an electronic jacquard machine is:
In general, a spring or a permanent magnet is used to raise or lower a required needle by operating a solenoid or an electromagnet with an electric signal, and to maintain the state of the needle.

[0003] In these conventional devices, a solenoid or an electromagnet is often used for one movement such as pulling or pushing a required needle. The power supply to the needle is stopped, and the needle is held at the return position by the elastic restoring force of the spring and the magnetic force of the permanent magnet.

[0004]

In the case of using a spring, uniformity of elasticity of the spring is important in order to operate a large number of needles in a complicated and accurate manner according to a picture. In addition, when the permanent magnet is magnetically held, it is important to select a magnetic force such that if the magnetic force is strong, it is difficult to magnetize the electromagnet, and if the magnetic force is weak, the holding of the return position is disturbed, resulting in weaving. In addition, if fine dust is caught in the operating portion, it may cause abnormal operation. Further, in order to ensure a series of operations, some devices are provided with a cooling device for removing high heat generated from used parts. The purpose of the present invention is to improve the performance of an electronic jacquard machine.

[0005]

According to the present invention, a predetermined electric signal is provided by alternately magnetizing two yokes, each of which focuses the magnetic lines of force of a permanent magnet, on both ends of a core of an electromagnet which swings a movable hook. The above-mentioned problem is solved by swinging the movable hook and holding the swinging positions on both sides thereof. This will be described with reference to the drawings.

(A) Permanent magnets 2 and 2 ′ are fixed between the two yokes 1 and 1 ′ by contacting the magnetic poles with the respective yokes, and the permanent magnets 2, 2 ′ are preferably fitted into holes 1 of the movable hook 4.
5 and fix it to make one. Permanent magnet 2,
Reference numeral 2 'denotes a position which does not come into contact with the cores 3, 3' inserted at both ends in the longitudinal direction of the yokes 1, 1 '.

(B) The electromagnet 5 is incorporated in the holder 7, and is preferably fixed to the electromagnet array board 8. The movable hook 4 is pivotally supported by a center pin 6 set in the center pin hole of the holder or the like so as to swing freely, and stopped by a snap ring R16 or the like to prevent the movable hook from laterally shifting.

(C) When the magnetic poles of the permanent magnets 2 and 2 'in contact with one yoke 1 are S poles, and the magnetic poles of the permanent magnets 2 and 2' in contact with the other yoke 1 'are N poles. The magnetic flux of the S pole gathers at both ends of the yoke 1, and the magnetic flux of the N pole gathers at both ends of the yoke 1 '.

(D) The electromagnet array board 8 is fitted into the array board mounting frame 9 at equal intervals. Lifting hook 10,
The lifting hook guide frame 11 is fitted into the grooves of the lifting hook guide board 11 at equal intervals, and is slidable so as to be sandwiched and fixed between the reinforcing plate 12 and the reinforcing plate 12 '.
3 are fitted in equally spaced grooves.

[0010]

When the printed circuit board 14 of the control device is connected to the electromagnet 5 to send a signal, the core 3 is set to the S pole, and the core 3 'is set to the N pole, the two ends on one diagonal of the yokes 1, 1'. When the magnetic poles of the cores 3, 3 'are converted, the magnetic poles of the two opposite ends on the opposite diagonal line are instantaneously magnetized.

A play space between the yokes 1, 1 'and the core is a space for maintaining a position where the movable hook and the lifting hook 10 are hooked, and a space for opening and closing the completely separated positions 4, 10'. It is.

In the needle selection device of the jacquard machine of the present invention, the permanent magnets 2 and 2 'are sandwiched and fixed between the two yokes 1 and 1' so that the magnetic poles are in contact with the respective yokes. The lines of magnetic force 2, 2 'flow through the two yokes 1, 1' in contact therewith, and the two yokes are magnetized into S and N poles. When a signal is sent to the electromagnet 5 and one end 3 'of the core is set to the south pole and the other end 3 is set to the north pole, one yoke 1 integrated with the movable hook 4' is connected to the core 3, and the other yoke 1 'is connected to the core 3'. And the movable hook 4 'is pulled up by the lifting hook 10'.
The lifting hook 10 'is pulled up by the opening movement of the warp. The conversion of the magnetic poles is performed simultaneously with the driving, and the magnetic poles at the ends 3, 3 'of the core are reversed, and the cores 3, 3' are magnetically attached to the yoke at two opposite diagonal ends of the yokes 1, 1 '. , The movable hook 4 swinging with this,
4 'and the lifting hook 10 are separated from each other.

[0013]

FIG. 5 shows an embodiment of the present invention.
As shown in the figure, the material 1 that becomes the two yokes of the needle selecting device,
Two permanent magnets 2, 2 'are fixed between 1'. The permanent magnets 2 and 2 'have their magnetic poles of the same polarity, and are fixed by inserting a pair of cores 3 and 3' between the two end portions of the yokes 1 and 1 'so as to leave untouched spaces 21 and 21'. I have. The assembled yokes 1, 1 ′ are fitted and fixed in a fitting hole 5 of a movable hook 4 to be integrated.

The electromagnet 5 with the pair of cores 3, 3 ′ protruding is attached to the holder 7 and fixed to the electromagnet array board 8 with screws 19. The holder 7 has a center pin hole 22 into which one end of the center pin 6 is fitted and fixed on a right-angled middle line in the longitudinal direction of the electromagnet 5. On the other hand, the movable hook 4 has a center pin hole 23 large enough to be movably fitted to the center pin 6 on a right-angled middle line in the longitudinal direction of the yokes 1 and 1 '. The holder 7 and the movable hook 4 are assembled by positioning the cores 3 and 3 'between the two ends of the yokes 1 and 1' and preventing the lateral displacement of the movable hook 4 by fitting the snap ring 16.

The lines of magnetic force of the permanent magnets 2 and 2 'are in contact with each other.
It flows through the yokes 1 and 1 'and is focused on two ends of S pole and two ends of N pole. When a signal is sent to the electromagnet 5, the dipoles at the two ends on the diagonal lines of the yokes 1, 1 'are instantaneously magnetized to the S and N poles of the cores 3, 3'. When the magnetic poles of the cores 3 and 3 ′ are changed, the other dipoles on the other diagonal line are magnetically attached via the center pin 6.

The interval between the two yokes 1, 1 'is the core 3,
A play space 24 is provided at a thickness of 3 ', which opens and closes a position where the movable hook 4 is securely engaged with the lifting hook 10 and a position completely separated as shown in FIGS. It is for preserving the interval of exercise.

In this invention, as shown in FIG. 4, the permanent magnet sandwiched between the two yokes can be placed at one intermediate position, and the magnetic poles can be stacked as NS and NS. This is because a stronger magnetic force can be obtained with a plurality of yokes than with one. The lines of magnetic force flowing at the four ends of the yokes 1, 1 'are not much different from those described above, , 3 ', and every time the pole is changed, the yoke 1,
The opening and closing movement of the movable hook 4 integral with the 1 '
It works reliably through the.

[0018]

[Effect of the invention] As mentioned above, the features of the invention are as follows.
By taking a space for inserting a pair of cores at both ends between the two yokes, the permanent magnets are sandwiched between the yokes and fixed, so that the magnetic field lines of the same polarity flow through the yokes in contact with the permanent magnets, and at four places at both ends. Gather as a strong magnetic flux. The core is located between both ends of the yoke by inserting the yoke integral with the movable hook into the center pin so as to be swingable. The space between the yokes is the thickness of the core plus play space, so each time the magnetic poles of the core are converted, two different diagonal poles are magnetically attached to each other via the center pin, and an integral movable hook Performs the opening / closing movement of the hook on and off of the lifting hook. There are no parts to assist this movement, and the power consumption is reduced by 70% compared to our company, but powerful and accurate operation can be obtained. Therefore, there was no need for blast cooling.

[Brief description of the drawings]

FIG. 1 is a side view showing a state in which a main part of the present invention is opened, with a part cut away.

FIG. 2 is a side view showing a closed state of a main part of the invention with a part cut away.

FIG. 3 is a side view of main parts.

FIG. 4 is a side view of a modification of a main part.

FIG. 5 is a three-dimensional exploded view of a main part with a part cut away.

[Explanation of symbols]

 1, 1 'yoke 2, 2' permanent magnet 3, 3 'core 4, 4' movable hook 5 electromagnet 6 center pin 7 electromagnet holder 8 electromagnet array board 9 array board mounting frame 10, 10 'lifting hook 11 lifting hook guide board 12, 12 'Reinforcement plate 13 Lifting hook mounting frame 14 Printed wiring board 15 Insert hole 16 Snap ring R 21, 21' space 22 Center pin hole 23 Center pin hole 24, 24 'Play space

Claims (2)

(57) [Scope of request for utility model registration] A movable hook (4, 4 ') pivotally supported on a holder (7) by a center pin (6) is pivoted by an electromagnet (5), and its pivot position is set by a permanent magnet (2). , 2 ′), the two yokes (1, 1 ′) arranged in parallel so as to extend in the direction perpendicular to the axis near the center pin (6). At the middle part of the yoke, a permanent magnet (2, 2) fixed with two poles in contact with and sandwiched by two yokes (1, 1 ')
2 ') and both ends (3,3') of the core with a play in the swing direction between the two yokes (1,1 ') at both sides in the extending direction of the yoke (1,1'). A needle selection device for a jacquard machine, comprising: 2. A permanent magnet (2, 2 ') comprising two yokes (1, 2).
1 ') and fixed on both sides of the yoke, leaving a space (21, 21'), and two yokes (1, 1 ') are fitted with holes for the movable hooks (4, 4'). (15)
The movable hook (4, 4 ') is swingably provided on the holder (7) with a center pin (6) located on a right-angled line in the middle of the yoke (1, 1') in the longitudinal direction. Core (3,
An electromagnet (5) having a 3 ') is attached to the holder (7), and both ends (3,3') of the electromagnet core are placed between the yokes in the spaces (21,21 ') of the two yokes. Play space (24,2
4 ′), and the play space is defined as a space for moving the movable hook (4, 4 ′) between a position where the movable hook (4, 4 ′) is securely engaged with the lifting hook (10) and a position completely separated therefrom. The needle selection device for a jacquard machine according to claim 1, characterized in that: