JPH0375470B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an improved invention based on the principle of construction of a torque bearing section made based on the "vertical suspension system according to Japanese Patent Application No. 49-083054", which is an earlier invention.

The prior invention opened up a way to fundamentally modify the bearing structure in particular. Based on this experience, the present invention aims to further improve the torque characteristics of the bearing and its durability, thereby maximally extending the long-term service life under maintenance-free conditions. This is what we aim to achieve.

All of the old-type bobbin holders that have been used exclusively in the past still follow the functional structure of the time they were first developed (in the 1950s), and have continued to this day without any improvements. This causes early deterioration of the bearing function, and in the field, there are many cases where the bearing cannot withstand even 2 to 3 years of use and reaches the limit of its performance life.

The present invention consists of the following contents.

(1) The configuration of the torque bearing section has been changed from the conventional concept of a single type to a multiple system in series.

(2) The usage environment in a spinning factory is such that the bearings of bobbin holders, which require advanced functionality, are exposed to external factors such as air fluff, floating dust, and humidity that can reduce their performance. The environment is filled with so much that it is extremely harsh.

The best preventive measure against troubles caused by these external factors is to isolate them from the external environment, but as long as the bearings are connected so that they can rotate and swing freely, sealing is impossible. In this aspect as well, the present invention aims to go beyond the conventional preconceptions regarding dustproofing and realize a dustproofing system in which the bearing structure is surrounded by multiple dustproof bands made of multilayered walls.

Below, the content of the present invention will be described in detail regarding its configuration, structure, and function.

As shown in Figures 1 and 2, the top cap 2
Pivot housing 2 integrated with 05
Two chambers 8 provided at two locations above and below at the axis of 04
3, 82, the upper first chamber 83 has an upper sloped portion on its inner wall formed into a mortar seat, and the lower neck of the tightening bolt 4 loosely accommodated in this first chamber 83 is inserted as shown in the figure. The tightening bolt 4 and the pivot housing 20 are formed into a hemispherical surface and are engaged with the aforesaid mortar surface seat in a suspension relationship as shown in the figure.
4 is suspended within a specified angle range (approximately 5° to 10°)
Connect and combine so that they can swing freely. At this time, the first
Tightening is achieved by matching the shape of the inner wall surface of the lower half of the chamber 83 with the head shape (hexagonal, square, etc.) of the tightening bolt 4, and leaving an appropriate clearance for the swing around the entire periphery facing this. Attachment bolt 4 and pivot housing 2
04 and top cap 20 integrated with it
The connection relationship of No. 5 can be such that while maintaining a freely swingable suspended state, rotation is prevented only in the direction of rotation, resulting in a restrained connection state. With this configuration, the maintenance operation when attaching or removing the upper structure 1 from the creel becomes extremely simple, and at the same time, the bobbin holder as a whole can ideally be maintained in a suspended state.

However, as long as the horizontal accuracy of the bobbin holder's mounting part (creel) is taken into consideration, the above-mentioned alignment function of the top cap 205 is not needed in most cases. In this embodiment, the machine base tightening bolt 4 is fixed to the pivot housing 204 in principle, and the structure is adaptable to any of the above as needed.

The upper end neck of the pivot 202 is received and accommodated in a bearing shape, and the lower end neck of the pivot 202, which is symmetrical to this, is formed as a sub-bearing part having a substantially similar shape to the third chamber 81 forming the regular bearing part. The third chamber 81 that accommodates the lower end neck of the pivot 202 is a rotor housing 203 that surrounds the upper peripheral surface of the suspended main body 2 from the outside and is suspended so as to be slidable in the direction of the axis YY'. It is formed at the center of a main body 201 that is integral with the top clutch 101 fixedly and integrally attached to the upper part of the main body 201, and when suspended by the neck of the pivot 202, constitutes a regular main rotating torque bearing structure.

The rotary torque bearing structure of the serial dual structure formed at the neck portions at both ends of the bearing pivot 202 that connects the third chamber 81 and the second chamber 82 in a rotatable and swingable manner is innovative. The result was a significant performance improvement. In other words, as a general rule, by adjusting the pull-out resistance torques of both to approximate values, it is possible to prevent a sudden change in the torque of either one due to some reason (intrusion or contamination of fluff, dust, metal, sand, etc.). In this case, as long as the other side maintains a predetermined torque, the rotational torque value can maintain a normal value in practical use. In addition, in the pivot 202 according to the present invention, a combination of a brass metal surface plated with nickel and a polyacetal molded bearing containing 3 to 10% Teflon on the bearing side has been found to be relatively good in terms of performance and economy, based on long-term comparisons. Proven by testing. Estimating from the track record that the bearing durability of this type of single sliding bearing system safely passed a total of 6 million rotations test under a load of 3 kg, the improvement and configuration of the present invention will improve the durability of a bobbin holder for a spinning machine. It is clear that reliability will continue to improve dramatically.

FIG. 3 shows an embodiment of a dustproof device for protecting the torque bearing section according to the present invention from the harsh external environment as described above.

In FIG. 3, a hollow collar-shaped No. 1 fly filter 1001 and No. 2 filter 1002 are installed in the internal space formed by the combination of the top cap 205, pivot housing 204, rotor housing 203, top clutch 201, and pivot 202. Leave a predetermined gap as shown in the figure. This filter 100
1, 1002 and the above-mentioned space, as shown in FIG. 3, the space is configured so that the upper structure 1 and the hanging main body 2 can be arranged completely independently of rotational and swinging movements.

Therefore, the arrangement of the multilayer wall surfaces formed by the above combination forms a group of small rooms with a multilayer structure as seen in A, B, C, D, E, etc. shown in the example, and a narrow part facing the entrance of each room is formed. effectively prevents the intrusion of fluff and dust,
On the other hand, the fluff that sneaks into these chambers accumulates in the form of a spider's web, thereby doubling the dust-proofing effect.

It has been confirmed in factory experiments that this multilayer structure, with three or more layers, has an extremely high dustproofing effect. In the examples, extremely satisfactory results were obtained using a single-layer dustproof filter (No. 1001 was used).

As a result of the combination of the above-mentioned items 1 and 2, both of them mutually enhance the durability and sustainability of the rotational torque in the bearing section, minimizing the variation thereof, and at the same time making prevention extremely difficult. It has been demonstrated that this method minimizes the probability of occurrence of rotational torque accidents related to bearing contamination caused by fluff, dust, metal powder, etc., and maximizes both performance and economic efficiency.

Ultimately, the present invention has the following embodiments based on the above configuration.

(1) When the upper structure 1 is attached to the creel, the axis of the pivot housing 204, which is the core of the upper structure, is always aligned and maintained on the vertical axis yy'. and a pivot 202 that connects the hanging main body 2 in a manner that allows for free swinging, hanging, and rotation.
A configuration in which independent torque bearing structures 81 and 82 are formed and arranged in duplicate at two locations corresponding to the neck portions at both ends, and the rotational torque values of these two upper and lower bearing locations are approximated to each other. do.

(2) Utilizing the internal space around the bearing structure mentioned in the previous paragraph, the bearing is protected and defended by surrounding the entire circumference of the bearing with a dust-proof device equipped with a multi-layered dust-proof chamber consisting of a unique multi-compartment structure. .

It is clear that the present invention has dramatically improved and stabilized the function of the bearing part of the bobbin holder, which is closely related to the quality of the spun yarn.
This system deserves high praise for its ability to withstand a life test of 10 million cumulative rotations under maintenance-free conditions with sufficient margin.

Therefore, the present invention ensures that the roving can be smoothly fed to the extending section of the spinning machine under the best conditions while the roving is being adjusted to a predetermined stable roving tension in a stable state for a long period of time. This method pioneered a new method.

[Brief explanation of drawings]

Fig. 1 shows a basic embodiment of the bobbin holder according to the present invention, and Fig. 2 is an overall front view showing a main part of the upper structure in cross section, and Fig. 2 is a sectional view illustrating the connection and connection relationship around the torque bearing part. , FIG. 3 is a sectional view illustrating the configuration of a dustproof device that protects the bearing structure. 1... Upper structure, 2... Hanging main body, 4... Machine mounting bolt, 7,7'', 7... Rocker, 8...
... Rotor, 203 ... Rotor housing, 2
02...Pivot, 204...Pivot housing, 205...Top cap, 201...Top clutch.

Claims (1)

[Claims] 1. Upper structure 1 attached to a suspension base
A pivot connecting member (hereinafter referred to as a pivot) 202 is connected between
Regarding the bobbin holder, the lower axis of the pivot housing 204, which is the core of the upper structure 1, The bottom surface of the upper bearing structure chamber 82 formed at the upper bearing structure chamber 82 and the top surface of the lower bearing structure chamber 81 formed at the axial center region of the top clutch body 201 which is the top core of the suspended body 2 are horizontally parallel to each other. , a narrow window is arranged concentrically along the axis YY′ between the two chambers 82 and 81, and has a smaller diameter than the large portion of the head at both ends of the pivot 202, and a diameter larger than the continuous rod neck, and is vertically symmetrical. An hourglass shape in which the two vertices of a pair of cones facing each other concentrically, or a curved body similar in shape to these cones, are integrally connected by a narrow rod, forming a communicating gap through a hole. By enclosing the heads of both ends of the pivot 202 in the upper chamber 82 and the lower chamber 81 and connecting and suspending them in a loosely fitted state, the pivot 202 can be attached to the bottom of the upper chamber 82 and the center of the top of the lower chamber 81. At the upper and lower peripheral edge contact points between the peripheral corner surface near the drilled narrow window hole and the conical surface in the cranio-jaw region of the pivot 202, which is aligned orthogonal to this and is aligned perpendicularly to this, in series with the symmetrical position on the axis YY' line, A double thrust bearing structure characterized by a configuration in which pivot sliding surfaces with similar and identical load conditions are simultaneously and automatically formed. 2 In a configuration in which double bearing structures are arranged in series on the vertical axis YY′, each bearing structure chamber 81, 82
Claim 1 is characterized by a configuration in which the rotational friction torque values in both bearing structures are approximated to the utmost by setting the diameters of the peripheral corners of the narrow window holes to be the same specific size. bearing structure in the bobbin holder. 3 Regarding the bearing structure which is connected and suspended from the upper structure 1 through the pivot 202 between it and the suspension body 2 so as to be able to freely rotate and swing, By using a space where the bearing part communicates with the outside air, the bearing structure is provided with a dust-proof envelope formed by arranging a multi-layered dust-proof chamber in which three or more dust-proof walls are partitioned into this space. A bearing structure in a bobbin holder according to claim 1, characterized by a dust-proof structure surrounding the entire periphery.