JPH0124703B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention is useful for lifting a rotating support device which is rotatably supported on a shaft via a bracket and temporarily stopping the device, for example, when a bobbin tube held in a cradle of a bobbin winding machine is used. When winding spun yarn, filament yarn, etc., when the tube is installed or removed, or when the yarn breaks, the tube is separated from the drive roller and temporarily lifted upward, and the tube is lifted. The present invention relates to a stopper for a rotation bearing device that allows a one-touch operation to reliably hold a rotation bearing in a fixed state.

Conventionally, for example, as shown in FIG. 7, a plate spring whose upper part is bent inward is attached to the base of a rotation support device 1 which is rotatably supported on an axis via a U-shaped bracket toy. Some springs have bent portions D that engage with protrusions fixed to shafts L between U-shaped brackets.

However, with this type of engagement means using a leaf spring and a protrusion, when engagement and disengagement operations are frequently performed or when used for a long period of time, the elastic force of the leaf spring gradually weakens and the engagement becomes difficult. There were drawbacks such as the parts coming off and causing unexpected accidents.

This invention was made in order to eliminate the above-mentioned drawbacks, and its purpose is to reliably and easily move the rotary support device to the stopper of the device with a single touch operation of lifting and lowering the device. It is an object of the present invention to generally provide a stopper for a rotation bearing device which can be engaged and disengaged from each other and can withstand long-term use without coming off during engagement.

Embodiment An embodiment of the present invention will be described below regarding a case in which spun yarn, filament yarn, etc. is wound around a spool tube held in a cradle of a spool winding machine. However, this embodiment is not necessarily limited to this; Needless to say, the present invention can be applied to all rotation bearing devices that rotate as follows.

Figure 1 shows the rotation support device 1 lifted up and the stopper 2
It is a perspective view showing the state where it was made to lock. In the case of this example, the rotation support device 1 pivotally supports a thread winding tube 3 which is rotationally driven by a drive roller 7 with a planar U-shaped cradle 4, and a pair of brackets 6 are provided at the base end of the cradle 4. , 6 are fixedly installed. The brackets 6, 6 are pivotally attached to the fulcrum shaft 5, and the tip end of the rotary support device 1, that is, the thread winding tube 3 portion can move up and down about the fulcrum shaft 5. At the base of the rotation support device 1, that is, at the center of the base of the cradle 4 in the width direction, a locking wire 8 has an upper part 8B parallel to the fulcrum shaft 5 on a pair of vertical legs 8A. It is erected so as to be inclined toward the fulcrum shaft 5 side.

Since it is desired that the rotary support device 1 is stopped by the stopper 2 with its tip raised and separated from the drive roller 7, the locking wire 8 is engaged with a hook portion 26 of the stopper 2, which will be described later. The combined state is shown in FIG. 1, and the configuration will be described in detail below.

The fulcrum shaft 5 has the pair of brackets 6,
A pair of holders 12, 12 are erected between 6. A pin hole 1 is provided at the upper edge of the holders 12, 12.
Holes 2A and 12A are opened, and a rotation stopper 9 is pivotally attached between both holders 12 and 12 by inserting a pin 13 therethrough.

As shown in FIGS. 3 to 5, the rotation stopper 9 has two flat housings 9A and 9.
A rotor 16 is installed inside A so that rotation can be stopped and stopped.

The rotor 16 has a disc body 17 having a shaft hole 16A in the center, and has a pair of fitting holes 17A, 17A formed at the same radial position on a straight line passing through the shaft hole 16A, and a pair of fitting holes 17A, 17A formed on the circumferential surface of the disc body 17. There are locking protrusions 21, 21 of the same shape in four radial directions perpendicular to the shaft hole 16A.
...is installed protrudingly. An inner locking recess 22 and an outer locking recess 23 are formed on the longitudinal surface of each of the locking protrusions 21 facing toward the distal end of the housing 9A so as to be in a distance relationship from the shaft hole 16A. There is.

Further, spiral springs 18, 18 are fitted into the fitting holes 17A, 17A, respectively, and steel balls 19, 19... are rotatably abutted on both ends of each spiral spring 18, 18. The steel balls 19 are urged by the helical springs 18 and slide into contact with the inner wall surface of the casing 9A, and are fitted into ball fitting holes 20 to be described later, thereby causing the rotor 16 to rotate and stop. can be intermittent.

Further, a support shaft 15 is loosely fitted into the shaft hole 16A,
By fitting the support shaft 15 into the shaft support holes 9B, 9B of the housing 9A, the rotor 16 can be attached to the housing 9A, 9A.
It is pivoted on.

The casings 9A, 9A have a vertical wide surface, a substantially flat upper portion, a substantially triangular shape with a large rounded tip and a tapered base. Shaft fitting holes 10, 10 are opened at the base end edge,
Fitting the hollow shaft 11 from the inside of the casings 9A, 9A,
In addition, with the rotor 16 housed inside the housing 9A, the outer ends of the hollow shafts 11 protruding outside the shaft fitting holes 10, 10 are bent and caulked to open the housings 9A. A fixed and rotating stopper 9 is integrated.

Therefore, the shaft holes 12A, 12 of the holder 12
A and insert the pin 13 into the hollow shaft 11, and
By fixing the tip of the rotary stopper 9 with a bush nut 14, the tip of the rotary stopper 9 is pivoted so that it can move up and down within a certain range.

Pivot holes 9B, 9B are drilled in the central part of the wide front of the casings 9A, 9A, and holes 9B, 9B are formed on the inner wall surface around the shaft holes 9B, 9B at the same intervals on the same circle centering on the shaft support holes 9B, 9B. Ball fitting holes 20, 20, . . . are recessed. The distance from the shaft hole 9B of the ball fitting hole 20 is the same as the distance between the shaft hole 16A of the rotor 16 and the fitting hole 17A, and the distance between the ball fitting hole 20...
The size of the steel balls 19 is such that the tops of the steel balls 19 can fit therein.

Therefore, as shown in FIG. 5, when the rotor 16 is rotated and the steel balls 19 are pushed by the helical springs 18 and fitted into the ball fitting holes 20, the rotor 1
6 can be temporarily stopped, but if force is applied to rotate the rotor 16, the steel balls 19 will resist the elastic force of the spring 18 and separate from the ball fitting holes 20... Slide the inner wall surface of the casing 9A to the ball fitting hole 2 at the next position.
0, the rotor 16 temporarily stops at a predetermined position and will not idle unless a certain force is applied.

As shown in the figure, each of the casings 9A, 9A has a front slope 9C formed on the front lower end surface thereof, the front slope 9C being sloped downward toward the rear. Further, a locking portion 24 is formed in the lower end of the casings 9A, 9A by a notch directly below the rotor 16.

The locking portion 24 includes a circular arc surface 25 that is symmetrical about the support shaft 15, a hook portion 26 formed between the circular arc surface 25 and the lower end of the front slope 9C, and a rear portion of the circular arc surface 25. It is comprised of an upper recess 27 that is deeply recessed toward the rear at the end, and a lower recess 28 that is recessed toward the rear below the upper recess 27 . Therefore, the positional relationship and shape of the lower recess 27 and the lower recess 28 are such that when the rotor 16 rotates, the locking protrusion 21
... is configured so that the positions of the inner and outer locking recesses 22 and 23 are the same on the side surfaces, and when the outer locking recess 23 and the lower recess 28 are aligned, the upper recess 27 and the inner locking recess 22
The relationship between the locking protrusions at the front and rear rotational positions is such that when the outer locking recess 23 of the front locking protrusion is aligned with the lower recess 28, The locking protrusion (21A in Fig. 6b) is located at the front upper part of the hook 26, and the locking protrusion (21B in Fig. 6a) is located at the front upper part of the hook portion 26.
The positional relationship is such that when the inner locking recess 22 fits into the upper recess 27, the rear locking protrusion (21C in FIG. 6A) is located behind the hook 26. Further, the hook portion 26 is connected to the rotating locking protrusion 21...
It is formed closer to the support shaft 15 than the outer locking recess 23 .

The operation of this invention configured as above will be explained. FIG. 1 shows the rotor 16 in a stopped state, and the rotor 16 at this time is in the state shown in FIG.

Therefore, in order to remove the locking wire 8 from the rotation stopper 9, the tip of the cradle 4 of the rotation support device 1 is lifted up. Then, the upper part 8B of the locking wire 8 moves to the arcuate surface 25 while lifting the tip of the rotary stopper 9.
The locking protrusion 21 is pushed to the position where the inner locking recess 22 contacts the upper recess 27 and the inner locking recess 22 contacts the upper recess 27 . Then, the steel balls 19 sliding between the rotor 16 and the inner wall surface of the casing 9A are connected to the spring 1.
The rotor 16 is fitted into the ball fitting hole 20 by applying 8 force.
stop the rotation. The positional relationship of the locking protrusions 21 in this state is as shown in FIG. 6a,
Since the rear-rotating locking protrusion 21C hides the hook 26, when the tip of the rotary support device 1 is lowered, the locking wire 8 is not caught by the hook 26 and the locking protrusion 21C hides the hook 26. Since it slides down the back of 21C, it is automatically released from the stopper.

Next, a method for locking the locking wire 8 to the hook portion 26 will be described.

With the cradle 4 located at the position indicated by the imaginary line 4A in FIG. 4, the rotation stopper 9 is located at the position indicated by the imaginary line 9'. At that time, the upper part 8B of the locking wire 8 is the sixth
When the cradle 4A is rotated upward about the fulcrum shaft 5 in the position shown in Figure 6a, the upper part 8B of the locking wire 8 is placed on the front slope 9C of the rotation stopper 9 as shown by the imaginary line 8B in Figure 6a. It abuts and slides rearward, abuts against the outer locking recess 23 of the rotor 16 projecting downward at the lower rear of the hook portion 26, and further pushes the locking protrusion 21 rearward.

When the upper part 8B of the locking wire 8 comes into contact with the lower recess 28, the positions of the lower recess 28 and the outer locking recess 23 overlap on the sides, and in this state, the upper part 8B of the locking wire 8 contacts the lower recess 28. When pushed rearward, the rotation stopper 9 lowers its front portion about the pin 13 and moves from the position shown by the phantom line 9' in FIG. 4 to the position shown by the solid line.

Then, when the cradle 4 is lowered, the upper part 8B of the locking wire moves forward (to the right) as shown in FIG. 6c and is caught on the hook portion 26. In this way, it can be stopped automatically.

In FIG. 6c, when the front part of the cradle 4 (not shown) is raised, the upper part 8B of the locking wire slides backward (to the left) on the circular arc surface 25 and enters the locking recess 22 inside the locking protrusion 21. When the inner locking recess 22 comes into contact with the upper recess 27, the locking protrusion 21 is exposed at the rear of the hook 26 as shown in FIG. 6d. When the cradle is lowered, the locking protrusion 21 will move as shown in Figure 6e.
Since the locking wire 8 slides down the back surface of the locking member, the locking wire 8 is not caught on the hook portion 26, and the stop can be automatically released.

As explained above, in this invention, the locking wire can be automatically stopped or released simply by bringing the upper part of the locking wire into contact with the locking protrusion on the rotor of the rotary stopper and rotating this. It has a simple structure, reliable operation, and excellent durability.

〔Effect of the invention〕

This invention has the following excellent effects.

(a) By simply moving the front part of the rotation bearing device up and down around the fulcrum shaft, it can be reliably stopped and released.

(b) Since the rotating stopper only rotates the rotor inside, it is less likely to break down and has a simple structure.
It has excellent durability and can be provided at low manufacturing cost.

(c) By increasing the size of the rotation stopper, it can also be used in large rotation bearing devices.

[Brief explanation of drawings]

The drawings relate to embodiments of the invention, and FIG. 1 is a perspective view of the stopper, FIG. 2 is a plan view, FIG. 3 is an exploded perspective view of the rotating stopper, FIG. 4 is a side view of the stopper, and FIG. FIG. 4 is a sectional view taken along the line A--A, FIGS. 6 a to 6 e are partial perspective views of a rotation stopper showing the action of the stopper, and FIG. 7 is a perspective view of a conventional stopper. 1...Rotation bearing device, 2...Stopper, 4...
Cradle, 5... Fulcrum shaft, 6... Bracket,
8...locking wire, 8A...leg, 8B...upper part,
9... Rotation stopper, 9A... Housing, 9B... Shaft support hole, 9C... Front slope, 10... Shaft fitting hole, 11...
...Hollow shaft, 12...Holder, 12A...Shaft hole, 1
3...Pin, 15...Spindle, 16...Rotor, 1
6A... shaft hole, 17... disk body, 17A... fitting hole, 18... spiral spring, 19... steel ball, 20...
Ball fitting hole, 21... Locking protrusion, 22... Inner locking recess, 23... Outer locking recess, 24... Locking part, 25
...Arc surface, 26...Hook part, 27...Upper concave part, 2
8...Lower recess.

Claims (1)

[Claims] 1. A locking wire having an upper part parallel to the fulcrum shaft is erected at the base of a rotation support device that is pivotally attached to a horizontal fulcrum shaft and whose tip can be moved up and down, and a holding wire is erected on the fulcrum shaft. A rotary stopper is pivotally attached to the tool via a pin, and a locking portion provided at the bottom thereof is positioned above the locking wire so as to be movable up and down, and the rotary stopper has a wide surface. A rotor is housed in a vertical casing so as to be able to rotate intermittently at a predetermined angle about a horizontal support shaft, and the rotor has a shaft hole with a plurality of locking protrusions on the circumferential surface of a disc body. The locking protrusions are formed radially at the center, and each locking protrusion has an inner and outer locking recess formed on the longitudinal surface facing the distal end of the housing so as to be in a distance relationship with the supporting shaft. A front slope inclined downwardly toward the rear is formed on the end surface, and a locking portion is formed on the lower end surface by a cutout directly below the rotor so that the locking protrusion of the rotor can be exposed,
The locking portion includes an arcuate surface having approximately the same radius from the support shaft, and a hook provided between the tip of the arcuate surface and the lower end of the front slope;
It is composed of an upper recessed portion recessed rearwardly at the rear end of the circular arc surface, and a lower recessed portion recessed rearwardly below the upper recessed portion. The lower end of the front slope is located closer to the support shaft than the outer locking recess of the locking projection, and the front part of the rotation support device When raised, the upper part of the locking wire slides on the front slope, rotates the rotor one rotation while contacting the outer locking recess of the locking protrusion, and contacts the lower recess to rotate the front part of the casing. If the upper part of the locking wire is tilted downward and returns as the rotation bearing device is lowered, and the upper part of the locking wire engages with the descending hook, and if the rotation bearing device is raised in this state, the upper part of the locking wire will It detaches from the hook, slides along the arcuate surface, reaches the upper recess, and presses the locking protrusion, thereby rotating the rotor and pushing up the front of the casing. When the locking wire returns, the hook and A stopper for a rotation bearing device, characterized in that the stopper is configured so that no engagement occurs.