JPH093754A - Driving mechanism of spindle plate in knitting machine - Google Patents

Abstract

PURPOSE: To provide a driving mechanism of a spindle plate capable of relieving an impact applied to the spindle plate, the spindle and a bobbin in a knitting machine forming a texture by intertwining yarns each other supplied from the bobbin by transferring the spindle equipped with a bobbin wound with the yarn by the rotation of the spindle plate. CONSTITUTION: This driving mechanism of a spindle plate is obtained by converting a displacing motion of a fitting body fitting to a rotating shaft 2 of a spindle 1 in the direction of the center of the shaft to an intermittent motion of the rotating shaft 2. As one of its example, an inclined and/or parallel uneven surfaces to the center line of the rotating shaft 2 of the spindle plate 2 are provided along the side surface of the rotating shaft 2, and the fitting body constituted by a holder 5 and a holding member 6 is fitted to the uneven surface as transferable. As the inclined or parallel uneven surfaces, the groove parts 3-1, 3-2 are constituted. The steel ball 4 is provided freely rotatable in the holder 5 and can rotate or slide in the groove parts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive mechanism for a spindle plate in a braiding machine.

[0002]

2. Description of the Related Art In a braiding machine, a bobbin wound around a bobbin is mounted by mounting a bobbin wound on a spindle incorporating a thread tension adjusting device, etc., and arranging the bobbins juxtaposed on the circumference of a bobbin. The knitted yarn is entangled to form a structure, and knotless nets used for fishing nets and golf nets, lace fabrics, strings, etc. are manufactured. The drive mechanism is provided with a spindle plate for driving a spindle fitted with a bobbin as shown in, for example, Japanese Utility Model Publication No. 55-46792, and a rotating shaft for fixing the spindle plate is equipped with a clutch. The transmission force of a separately prepared constant speed rotation shaft is transmitted to the spindle plate by connecting a clutch that engages with a shifter fork supported by a cantilever. The rotation angle of the spindle plate is 180 degrees, and since the rotation and the rotation are intermittently performed at this rotation angle, a considerable impact is applied when the clutch is joined, and the structure becomes complicated. In addition, a stopper is required to release the clutch connection and stop the rotation of the spindle plate at a predetermined position, which also causes an impact. Further, although each of the moving members is made of resin and is light in weight, the impact becomes remarkably large as the operating speed of the machine increases.

On the other hand, a gear is used in the drive transmission portion for transmitting the rotational force to the spindle plate, and the spindle plate is required to rotate rightward and leftward alternately. Therefore, the spindle plate is fixed. Gears that mesh with each other at the distance between the rotating shafts are provided to transmit power and prevent the rotation angles from shifting from each other. For example, in a model having 64 bobbins, 64 gears meshing with each other are arranged on the circumferential line. Power is transmitted to some of these gears through idle gears, and large gears and timing belts are used as transmission means.

As described above, the driving force from the motion system that moves at a constant speed is joined through the clutch by the action of the cantilever-supporting fork, whereby the acceleration is suddenly applied to the spindle plate, the spindle and the bobbin, and Since the spindle plate suddenly stops after rotating 180 degrees, a large tilting force is generated in the upright spindle in cooperation with the inertia, which causes rattling and noise. .

[0005]

SUMMARY OF THE INVENTION The problem to be solved is to use a gear or timing belt for driving the spindle plate in order to mitigate the impact caused by a sudden acceleration motion applied to the spindle plate, the spindle and the bobbin, etc. It is an object of the present invention to provide a mechanism capable of generating a rotating force of a spindle plate.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a spindle plate is constructed by converting displacement movement in the axial direction of a fitting body fitted to a rotary shaft of a spindle plate into intermittent rotary motion of the rotary shaft. The rotation and / or the stop are performed.

An uneven surface inclined and / or parallel to the axis of the rotating shaft of the spindle plate is provided along the side surface of the rotating shaft, and the fitting body is fitted to the uneven surface so as to be movable. The united body is moved along the rotation axis, that is, the fitting body is reciprocally slid in the direction of the rotation axis and the spindle plate is rotated, and the spindle plate is stopped by rotating along the uneven surface of the fitting body.

The rotation speed of the rotary shaft can be adjusted by continuously changing the inclination angle of the inclined uneven surface.

The rotation speed of the rotary shaft of the spindle plate can be adjusted by changing the moving speed of the fitting body.

Further, a groove portion inclined with respect to the rotating shaft core or a groove portion parallel to the inclined groove portion is provided, and the fitting body can be moved by rolling or sliding in the groove portion. The rotating shaft of the spindle plate is rotated by moving the fitting body.

On the other hand, the selecting means for controlling the rotation and stop of the fitting body opens and closes the electromagnetic clutch based on the signal from the braiding command mechanism to select the rotation or stop of the rotating shaft.

[0012]

[First Embodiment] FIG. 1 is a side sectional view showing an embodiment of a drive mechanism for a spindle plate according to the present invention. It has a concave surface. Reference numeral 3-1 is an inclined groove portion provided in the groove portion 3 along the outer side surface of the rotating shaft so as to be inclined with respect to the rotating shaft core, and 3-2 is provided in parallel with the rotating shaft core. It is a parallel groove part. The transitional portion that transitions from the parallel groove portion 3-2 to the inclined groove portion 3-1 is an important portion that alleviates a sudden movement change of rotation and rotation of the rotation shaft. 4 is a steel ball, 5
Is a holder of a steel ball, and the steel ball 4 does not move in the holder 5 but only rotates at a fixed position. The holder 5 is fitted on the tubular holding member 6 and moves integrally. The holder 5 and the holding member 6 form a fitting body.

A slide bearing 7 is provided for moving the holding member 6 up and down along the rotating shaft 2.
Is an outer ring of the slide bearing, and is fixed to the holding member 6 by snap rings 9 and 9-1.

A flange portion 10 is provided on the outer peripheral surface of the holding member 6.
Is integrally provided, and the holding member 6 is configured to be rotatable by the collar 11 and the snap ring 12 without making a vertical gap in the electromagnetic clutch 13 as a selection means. Reference numeral 13 is an electromagnetic clutch, and the electromagnetic clutch 13 is fixed to an elevating ring 17 that moves up and down by a cam mechanism (not shown) along a shaft 15 formed upright on a frame 20 via a slide bearing 16. . The clutch portion 14 of the electromagnetic clutch 13 opens and closes based on an electric signal from a braiding command mechanism (not shown) such as a jacquard, holds the holding member 6 when it is closed, and fixes the holding member so that it does not rotate.

A thrust bearing 21 is provided on the rotary shaft 2 so as to receive a load in a thrust direction generated when the holding member 6 is raised and the rotary shaft 2 rotates, and the radial bearings 22 and 22-1 are provided. Rotatably frame 20
Is supported by.

Further, in order to maintain the stationary position of the rotary shaft 2 and to prevent the accumulation of the error of the displacement amount, the rotary shaft 2 is taken as an example.
A cutout portion 23 is provided in a part of the device, and an electromagnetic clutch 24 that grips the cutout portion 23 is provided. The position where the steel ball 4 moves to the parallel groove portion 3-2 and the rotation of the rotary shaft 2 is stopped and the position where the electromagnetic clutch 24 grips and fixes the cutout portion 23 are coincident in rotational position.

Next, the operating condition will be described. The lifting ring 17 is at the lowest position in FIG. 1, the clutch portion 14 of the electromagnetic clutch 13 is in the open state, and the holding member 6 is also at the lowest position. The steel ball 4 is at the lowest position of the groove 3 in the parallel groove 3-2. The electromagnetic clutch 24 is closed and the rotary shaft 2 is stopped.

The operation is started by opening the electromagnetic clutch 24. Next, the clutch portion 14 is closed, and the holding member 6 starts to rise without rotating as the lifting ring 17 rises. A steel ball holder 5 is fitted in the holding member 6, and the steel ball 4 moves in the parallel groove portion 3-2. At this point, no force is generated to rotate the rotary shaft 2. Position 4 for steel ball
-1.

When the holding member 6 further rises and the steel ball 4 moves into the inclined groove portion 3-1, a rotating force is applied to the rotating shaft 2. Since the steel ball 4 stays in a fixed position and rises vertically in the steel ball holder 5, when the steel ball 4 moves inside the inclined groove portion 3-1, the inclined groove portion 3-1 gradually rotates and moves. 2 also rotates. When the steel ball 4 further rises and enters the parallel groove 3-2, the rotation of the rotary shaft 2 is stopped. Steel ball 4 at this time
The stop position of is shown at position 4-2. When the rotation of the rotary shaft 2 is stopped, the electromagnetic clutch 24 is closed and at the same time the clutch portion 14 is opened. The elevating ring 17 moves to the uppermost position and the steel ball 4 moves to the position 4-3. Next, when the ascending / descending ring 17 starts to descend and the steel ball 4 moves to the inclined groove portion 3-1 again, the holding member 6 returns to the initial start position 4-1 while rotating. This completes the operation of one cycle.

Although the above description has explained that the spindle plate 1 is exclusively responsible for the right rotation, the spindle plate responsible for the left rotation is required while the spindle plate 1 responsible for the right rotation is not rotating. Rotate according to.

Therefore, in the above description of the operation, the timing of energizing the clutch portion 14 and the electromagnetic clutch 24 is set to 18
It can be achieved by shifting it by 0 °. That is, when the lifting ring 17 is raised, the clutch portion 14 is opened, and the electromagnetic clutch 24 is closed, whereby the holding member 6 rotates around the rotary shaft 2 and rises, and at this time, the spindle plate is stopped. Therefore, at the time of descending, the clutch portion 14 is closed and the electromagnetic clutch 24 is opened, so that the rotation shaft 2 is given a left rotation opposite to the above rotation.

In this way, one reciprocating sliding movement of one elevating ring 17 causes the right rotating portion and the left rotating portion of the spindle plate to be alternately rotated by 180 ° so that one cycle of braiding is performed.

In the above embodiment, the rotation angle and the rotation speed of the rotary shaft 2 are determined by the structure of the groove portion 3, and the rotation speed is gentle at the start of rotation, fast in the middle, and then gradually decelerated and stopped. Leading to. In this example, the positions 4-1 and 4-3 of the steel ball 4 are set at positions rotated by 180 degrees with respect to the axis of the rotating shaft 2. Further, the time when the shaft stops is the time zone in which the steel ball 4 stays in the parallel groove portion 3-2. Therefore, the electromagnetic clutches 13 and 24 are operated only during the time when the rotary shaft 2 is stopped, and no impact occurs.

The groove 3 described in the above embodiment may have a toothed shape as a convex portion as seen in a worm gear, or the groove may have a rectangular cross section and the steel ball may be replaced by a rod-shaped object. Can achieve the object of the present invention.

Further, although the rotating shaft 2 is described as an example of a solid shaft in the embodiment, the rotating shaft 2 is a tubular shaft and is similarly formed by a concave and convex groove portion provided between the rotating shaft 2 and a fitting body fitted into the shaft. It goes without saying that the working state of is obtained.

[0026]

[Embodiment 2] FIG. 2 shows a rotary shaft 2- of a spindle plate.
1 shows an example in which a twisted surface 25 that is inclined with respect to the rotation axis is created. In other words, the plate is twisted by 180 °. In the figure, the same parts as those shown in the first embodiment are designated by the same reference numerals, and the operation thereof is the same, and therefore the description thereof is omitted. 26
Is provided by two rollers and is held by the holding member 6-1 and is rotatable. When the holding member 6-1 moves up and down, the two rollers 26 roll or slide across the inclined surface to rotate or stop the rotating shaft 2-1.

[0027]

[Third Embodiment] FIG. 3 shows a structure in which an inclined surface is formed in the rotary shaft 2-2 while continuously rotating a hole 27 penetrating at right angles to the rotary shaft core of the spindle plate. . The roller 26-1 is pierced through the penetrating hole 27 and is rotatably fixed to the holding member 6-2. The rotating shaft 2-2 is rotated and stopped by the vertical movement of the holding member 6-2.

[0028]

According to the present invention, the conventional cantilevered shifter fork and the clutch drive mechanism are eliminated, and the rotation of the spindle plate is directly caused by the displacement movement of the fitting body fitted to the rotation shaft. Since the mechanism is used, the displacement motion can be controlled easily, and the rotation of the rotary shaft can be prevented from sudden rotation and sudden stop, so that the impact around the drive can be significantly mitigated and the noise can be reduced.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an embodiment of a drive mechanism for a spindle plate of the present invention.

FIG. 2 is a side sectional view showing another embodiment of the drive mechanism for the spindle plate of the present invention.

FIG. 3 is a perspective view showing a modification example of a rotating shaft and a fitting body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spindle plate 2 Rotating shaft 3-1 Inclination groove part 3-2 Parallel groove part 4 Steel ball 5 Holder 6 Holding member 13 Electromagnetic clutch 14 Clutch part 15 Shaft 17 Elevating ring 20 Frame 23 Notch part 24 Electromagnetic clutch

Claims (6)

[Claims] 1. A braiding machine for forming a structure by moving a spindle, on which a bobbin wound with a thread is mounted, by rotating the spindle plate to entangle the threads supplied from the bobbin to form a tissue. A spindle plate drive mechanism configured to rotate and / or stop a spindle plate by converting a displacement movement of a fitting body to be fitted in an axial direction into an intermittent rotation movement of the rotary shaft. 2. An uneven surface inclined and / or parallel to an axis of a rotary shaft of a spindle plate is provided along a side surface of the rotary shaft, and a fitting body can be fitted into the uneven surface to move. And by moving the fitting along the axis of rotation,
The drive mechanism for the spindle plate according to claim 1, wherein the spindle plate is rotated and / or stopped. 3. The drive mechanism for a spindle plate according to claim 2, wherein the rotation speed of the rotary shaft of the spindle plate is adjusted by continuously changing the inclination angle of the inclined uneven surface. 4. The drive mechanism for a spindle plate according to claim 2, wherein the rotational speed of the rotary shaft of the spindle plate is adjusted by changing the moving speed of the fitting body. 5. A tilted groove portion or a groove portion parallel to the tilted groove portion is provided with respect to the rotary shaft core, and the fitting body is rotatably or slidably movable in the groove portion, along the rotary shaft core. The spindle plate drive mechanism according to any one of claims 2 to 4, wherein the spindle plate is rotated and / or stopped by moving the fitting body. 6. The selection means for controlling the rotation and stop of the fitting body opens and closes the electromagnetic clutch based on a signal from the braiding command mechanism.
The drive mechanism for the spindle plate according to the item.