JPS58156035A - Brake apparatus of rotor spindle in open end fine spinning machine - Google Patents

Abstract

PURPOSE:To prevent the application of load to bearings of a rotor spindle in braking, by using a structure designed to press brake shoes from both sides of the rotor spindle thereto to brake the rotation of the rotor spindle. CONSTITUTION:In an open end fine spinning machine, having a rotor spindle 6, equipped with a rotor 12 at the tip thereof, and supported horizontally by bearings 11, and capable of rotating and driving the rotor 12 by the contact of the rotor spindle 6 with a running belt 7, two levers 14 and 14 having the tips respectively equipped with brake shoes 15 and 15 opposite thereto at both sides of the rotor spindle 6 are provided, and a spring 16 is provided at the other ends. A means 18 is provided for pressing the tips of the levers 14 and 14 to the rotor spindle 6 on pressing the rotor spindle 6 with the bearings 11 downward.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a brake device for a rotor spindle in an open-end spinning frame.

In recent years, the speed of open-end spinning machines has increased, and as a result, there is a need to prevent damage to the rotor spindle bearing, which has a large effect on the rotational speed of the rotor. When a weight that requires splicing, etc. is braked by a no-rake member, a large mass is placed on the rotor spindle bearing, which causes a decline in bearing performance and, in turn, impedes higher speeds. .

For example, a conventional brake device has one type as shown in Fig. 1.
For weights that require thread splicing, etc., the key member 2 is fitted into the spinning body 1 by rotating the spinning body 1 toward you in order to clean the inside of the rotor.
engages with the projection 4' of the sealing ring 4, which is integrally attached to the boulder 3 that supports the rotor, and the cough holder 3 rotates around the holder support shaft 5. Therefore, when the rotor spindle 6 is tilted away from the drive belt 7 and pressed against the fixed brake shoe 8 for braking, or when the rotor spindle 6 is tilted in the same way as described above, as shown in FIG. A brake shoe 10 placed opposite the brake 9 provided at the end of the rotor spindle 6 advances in the direction of the arrow against the spring 16, thereby causing the brake shoe 10 to push the brake 9 in the thrust direction. There are some brakes that apply brakes.

However, in the former braking device, when braking the rotor spindle 6, which has become extremely fast in recent years, the braking load, especially in the radial direction of the rotor spindle 6, is strongly applied to the bearing 11 of the rotor spindle 6. In the brake device, the brake load, particularly in the thrust direction, is strong against the bearing 11 of the rotor spindle 6, causing wear and damage to the bearing 11.

Therefore, an object of the present invention is to solve the above drawback by installing two levers and brake shoes so that one lever moves toward the rotor spindle during braking, and applies equal braking force from both left and right sides of the rotor spindle. To provide a brake device which prevents a brake load from acting on a bearing of a rotor spindle by applying braking.

Next, a first embodiment of the present invention will be described with reference to FIGS. 3 to 5.

A rotor spindle 6 supported by a bearing 11 has a rotor 12 at its tip and extends in the horizontal direction, and comes into contact with a drive belt 7 common to all the rotors, and as the belt 7 runs, the rerotor spindle 6 rotates. The bearing 11 is held by a holder (not shown), and when it becomes necessary to splice the yarn, the holder is rotated to tilt the rotor spindle 6 as described above.

The bearing 11 consists of bearing parts 11a and 11b and a body part 11C that connects these parts, and a through hole 110' is formed in the center of the body part 11C. and the through hole 11
As shown in FIG. 4, two levers 14 and 14 are rotatably supported in a scissor-like manner on a support shaft 13 attached along the longitudinal direction of the rotor spindle 6 at the center of the rotor 0'. Tips 14a, 1 of both levers 14.14
4a is located very close to the rotor spindle 6, and faces each other with the rotor spindle 6 in between. The tip 14
a and 14a are formed in an arc shape, and like this one, 1
Brake shoes 15° 15 formed in an arc shape are cut r and 1" respectively. Lower end portions 14b, 14b
are opposite to each other below the bearing 11, and between them the compression spring 1
6 is attached, and both tip portions 1.4rt and 14a are constantly biased f:I in the direction away from the rotor spindle 6. In the lower position of said levers 14.14, when the rotor spindle 6 is tilted, the lower ends 1 of said levers 14.14
A stand 18 in which a groove 17 that engages with the grooves 4b and 14b is formed is fixedly installed on the machine stand. Further, the groove 17 is formed so as to become gradually thinner toward the back of the table 18.

Next, the operation of the apparatus of the present invention constructed as described in Section 2 will be explained.

If a spindle with an open-end spinning zone needs to be spliced and the inside of the rotor is to be cleaned in advance, the spinning podium of that spindle is opened toward the front by an operator or an automatic machine, as described above. As shown in FIG. 1, the holder automatically rotates around the holder support shaft located above the rotor 12 (see FIG. 1), and the rotor spindle 6 tilts downward to the right and separates from the drive belt 7. A scissor-like lever 14.14 is lowered together with the bearing 11 of the spindle 6.

At this time, the lower ends 14b of both levers 14.14.

After 14b comes into contact with the surface of the groove 17 of the fixed table 18, it moves along the surface of the groove 17 while resisting the biasing force of the spring 16. As a result, both levers 14.14 rotate around the support shaft 13, their tips 14a, 14a move toward the rotor spindle 6, and the brake shoes 15.
．． 15 simultaneously abut against the rotor spindle 6 and act to brake its rotation.

Therefore, during braking, the same brake load of J is applied to the rotor spindle 6 from both the left and right sides, and the brake load in the radial direction (load in the direction of bending the rotor spindle 6) is biased against the rotor spindle 6, and the brake load is biased in the thrust direction. Since the brake load (load in the direction of shifting the rotor spindle 6) is not applied, the bearing 11 of the rotor spindle 6 is not affected at all. Furthermore, since the magnitude of the brake load applied to the rotor spindle 6V can be determined by adjusting the shape of the groove of the engaging platform, reliable braking can be achieved.

Further, when the preparation for yarn splicing is completed, the operation of restoring the rotation of the rotor spindle 6 is performed using a spinning podium (not shown).
When the holder (not shown) returns to its original position, the lower ends 14b, 14b of both levers 14.
The tip portions 14a, 14a move upward while receiving the urging force of the rotor spindle 6, and the tip portions 14a, 14a become separated from the rotor spindle 6. Then, after the lower ends 14b, 14b are separated from the platform 18 and the lever 14.14 is in the standby position.

The ten-rotor spindle 6 is in a horizontal state and is rotated while contacting the drive belt 7.

In the embodiment described above, a brake member consisting of the bearing 11r of the rotor spindle 6, the lever 14, 14, etc. is provided, and these are configured to make a tilting movement.
In the present invention, the brake member is mounted on a machine stand [1], and the rotor spindle 6 and the bearing 11 are tilted during braking [thus, the brake shoes are advanced from both sides with respect to the rotor spindle 6, It is possible to implement a brake element in which the brake shoe rests against the rotor spindle 6 at the braking point.

With the above configuration, the present invention provides an ideal braking action that does not cause bending or displacement of the rotor spindle during braking, and does not apply any braking load to the bearing V of the rotor spindle. Therefore, it has very good effects.

[Brief explanation of the drawing]

8- Fig. 1 is an explanatory diagram of the operation of the conventional device, Fig. 2 is an explanatory diagram of the operation of another conventional device, Fig. 3 is a side view showing the device of the present invention, and Fig. 4 is a diagram showing A-A in Fig. 3. The sectional view, FIG. 5, is a plan view of FIG. 3. 6: Rotor spindle 7: Drive t/I belt 8.10
．． 15 Nibrake Shoe 11: Bearing of rotor spindle 14 Nilever Patent Applicant Toyoda Automatic Loom Works Co., Ltd. Ome TL Spun Mori Rokuten JP Patent Publication No. 58-15 GO35 (4)

Claims (1)

[Claims] a- Displace the rotor spindle or the brake part 4fl, separate the rotor spindle and the drive belt, and
In an open-end spinning machine that brakes the rotor spindle by bringing the rotor spindle into contact with a nuclear brake member, two levers with opposing tips are provided on both sides of the 111th rotor spindle, and The open-end precision mechanism is characterized in that each part is provided with a brake shoe, and the tip part is provided with an operating means for moving toward and abutting the mI rotor spindle and returning to the mI rotor spindle by the displacement of the rotor spindle. Brake device for rotor spindle in spinning machine.