JPS5921980B2 - Separate roller assembly - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a separate roller body including an intermediate roller body made of a synthetic resin material, and in particular, the engagement between the intermediate roller body and the inner circumferential groove of the shell roller is achieved by a press-fitting margin provided in advance in the intermediate roller body. A separate roller assembly in which insertion/removal positioning and fixing of the shell roller is ensured by means of protrusions, and an annular bead, band, flare body, etc. on the fixed side outer peripheral end of the above-mentioned intermediate roller body. When the annular bulge is formed and the shell roller is inserted, the end of the intermediate roller body is deformed radially inward to engage with the bearing end surface, and is further integrated with the intermediate roller body provided at the free end. This invention relates to a separate roller assembly in which the outer ring side of a bearing fixed on a shaft is positioned and fixed by a small-diameter ring body that performs the following operations.

As shown in FIGS. 1 and 2, the separate roller basically consists of a shaft 1, bearings 2 and 3 on the shaft, and a shell roller 3 which is an outer cylinder.

In FIG. 1, 5 is a lid and 6 is a seal. Further, in Fig. 2, 5 is a lid body, 6 is a seal portion, 7 is a spacer,
8 is a nut, and 9 and 10 are retaining rings. By the way, in the former case, if a certain part breaks, the whole thing must be disposed of, and in the latter case, for example, if a bearing breaks, it must be disassembled and used for the specified work. Later, the bearing would have to be replaced with a new one and reassembled for use, but this process was time consuming and inefficient. In particular, the use of separate rollers in processed yarn factories is limited to 4 lines per line.
00 to 800 pieces are used, and the factory as a whole uses 20,000 to 80,000 pieces, so even if it is not a big deal to handle each individual piece, when handling a large number of pieces, it is necessary to streamline and save labor as we do today. It is self-evident that it is unsuitable for the era of modernization. For reference, how to handle separate rollers at a processed yarn factory is approximately 3.
Internal inspections are carried out every month and lubricating oil is replenished. Further, the number of separate rollers per line is 400 to 800, and the setting is such that even one of them will not be damaged during the period of use. This invention has been developed as a result of research and development in view of the above points, and has solved one of several problems considered to be important. In particular, the engagement between the shell roller and the intermediate roller body on the fixed side, and the fixation It concerns the positioning and fixing of the bearing outer ring over both the side and the free side.

That is, it is an object of the present invention to provide an ingenuity for the engagement between the intermediate roller body and the shell roller so that the insertion and removal, positioning, and fixing of the shell roller can be effected. The structure of the invention will be described below with reference to the embodiments shown in FIGS. 3 to 10.

Figures 3 through 6 show typical embodiments of the invention. A is a shaft unit, B is an intermediate roller body, and C is a shell roller. Thus, the shaft unit A includes the shaft 11,
It consists of bearings 12, 13, a spacer 14, a fixing ring (or snap ring or cap) 15, and a positioning member 16 that also serves as a seal.

The intermediate roller body B is made of synthetic resin material, has a small diameter ring body 17 at the free end side, and has a bearing 12 at the center and fixed side.
, 13 and forms a large diameter cylindrical portion 18 extending in the axial direction. Finally, the shell roller C includes a main body 19 made of a light and hard metal material with a thin plating on the surface, and an outwardly open flange portion 2 at the fixed end of the main body 19.
0 and grooves 21 and 22 provided on the inner circumference.
In the above structure, the first invention according to the present invention, that is, the engagement between the groove provided in the shell roller and the intermediate roller body will be explained as follows.

FIG. 7a shows a case where the shell roller 19 is inserted into the cylindrical portion 18 of the intermediate roller body B provided with a press-fitting allowance.
Since the cylindrical portion 18 is made of a synthetic resin material such as Diuracon, the shell roller 19 can be easily inserted into the cylindrical portion 18. At this time, the plastically deformed resin enters the groove provided on the inner periphery of the shell roller 19 and prevents the shell roller 19 from moving in the axial direction. Further, FIG. 7b shows a case where the shell roller 19 is inserted into the cylindrical portion 18 of the intermediate roller body B provided with a projection in advance. Since the cylindrical portion 18 is made of synthetic resin material, the shell roller 19 can be easily inserted into the cylindrical portion 18.
A projection provided in advance on the cylindrical portion 18 engages with a groove on the inner circumference of the shell roller 19 to prevent the shell roller C from moving in the axial direction. The grooves on the inner circumference of the shell roller 19 are formed by a pair of grooves 21 and 2 cut at relatively long intervals, as shown in FIG.
2, so intermediate roller body B of shell roller C
The insertion, positioning, and fixing are perfect. Next, the second invention, that is, the positioning and fixing of the bearing outer ring on both the fixed side and the free side will be explained as follows.

FIG. 8 shows a typical example of this. FIGS. 9a to 9d show various types of intermediate roller bodies B used in the present invention. In the figure, reference numeral 23 denotes a bead portion or a band portion provided on the outer periphery of the fixed side end, or an annular bulging portion such as a flare body formed on the fixed side end. When the shell roller C is inserted into the intermediate roller body B, the annular bulge such as the bead, band, or flare body is pushed radially inward by the inner periphery of the shell roller body 19. The shoulder portion of the free side ring 17 of the intermediate roller body B engages with the end surface of the bearing 12 to prevent the bearing from rotating in the axial direction. At the same time, the engagement described in the first invention section is performed between the cylindrical portion 18 of the intermediate roller body B and the groove on the inner periphery of the main body 19 of the shell roller C. Therefore, the shell roller C and the bearing outer ring can be perfectly positioned and fixed.
In addition, the free side shaft end portion in this invention is shown in FIGS. 10 a to d.
The bearings 12 and 13 are fixed by an arbitrary fixing ring 15 as shown in FIG. As explained above, this invention has two rolling bearings mounted on a stepped shaft with a large diameter on the fixed end side, separated by a spacer between the inner rings of both bearings, and one bearing inner ring mounted on the stepped shaft. The shaft unit is in contact with the shaft shoulder and is positioned and fixed by tightening the other bearing inner ring to the free end of the stepped shaft with a fixing ring. Slightly larger than the outer diameter of the ring,
It has a small-diameter ring body that forms a step that is locked to the outer ring of the bearing on the free end side of the shaft unit, and the inner diameter from the step toward the opening at the other end is equal to the outer diameter of the outer ring of the bearing of the shaft unit. The intermediate roller body is made of a synthetic resin material and has a cylindrical shape, and the other end opening extends beyond the bearing outer ring end face on the fixed end side of the shaft unit, and the intermediate roller body is inserted into and removed from the outer diameter surface of the intermediate roller body. It is constructed with a metal cylindrical shell roller that is press-fitted and has annular grooves in which the flesh of the intermediate roller body restores and swells at multiple locations on the inner diameter surface to fit, so it has the following effects. .

First, in the first invention, since the two bearings are equipped with outer rings, the intermediate roller body can be made of a synthetic resin material. The roller can be press-fitted by elastically deforming the intermediate roller body made of a synthetic resin material to reduce its diameter, making the press-fitting process easy. Moreover, after the press-fitting, the inner diameter surface of the intermediate roller body elastically deforms and the two pieces are separated. It bites into the outer diameter surface of the outer ring of the bearing to prevent the intermediate roller body and the shaft unit from coming off in the axial direction, and the outer diameter surface of the intermediate roller body bites into the outer diameter surface of the shell roller at multiple locations. The shell roller and the intermediate roller body are elastically restored and fit into the annular groove formed in the axial direction, thereby ensuring the axial connection between the shell roller and the intermediate roller body. can be tightly coupled throughout. In addition, since the intermediate roller body is made of synthetic resin material, it is easy to replace it when the shell roller becomes worn out.
It is easy to install and remove the separate rollers for periodic inspection and oil replenishment. Further, an annular bulge is formed on the outer periphery of the fixed end of the intermediate roller body made of synthetic resin material,
In addition, since the annular protrusion corresponding to the annular groove on the inner diameter of the shell roller is provided, positioning and fixing after press-fitting the shell roller can be more complete.

[Brief explanation of the drawing]

FIGS. 1 and 2 are cross-sectional views of the entire conventional assembly. 3 is a cross-sectional view of the entire assembly showing a typical embodiment of the present invention, FIG. 4 is an assembly drawing showing component A in FIG. 3, that is, the shaft unit, and FIG. 5 is a diagram showing component B, that is, the intermediate roller body. FIG. 6 is a drawing showing component C, that is, the shell roller. Next, FIGS. 7a and 7b are drawings showing essential parts of the first invention according to the present invention. FIG. 8 is a sectional view of the entire assembly showing the second invention according to the present invention, and FIGS. 9a to 9d are drawings showing various types of intermediate roller bodies in the second invention. Finally, FIGS. 10a to 10d are drawings showing various methods of fixing the shaft end of the shaft unit. A...
...Shaft unit, B...Intermediate roller body,
C... Shell roller, 11... Shaft, 1
2...Bearing, 13...Bearing, 14...
...Spacer, 15...Fixing ring, 17...
... Small diameter ring body, 18 ... Large diameter cylindrical part, 19 ... Shell roller body, 21, 22.
...Groove, 23...Bead part (or band part or flare body).

Claims (1)

[Claims] 1. Two rolling bearings are mounted on a stepped shaft with a large diameter on the fixed end side, separated by a spacer between the inner rings of both bearings, and the inner ring of one bearing is placed on the shoulder of the stepped shaft. The shaft unit is positioned and fixed by tightening the other bearing inner ring to the free end side of the stepped shaft with a fixing ring, and the shaft unit is opened at both ends, and the inner diameter of one end is connected to the outer diameter of the fixing ring of the shaft unit. slightly larger than
It has a small-diameter ring body that forms a step that is locked to the bearing outer ring on the free end side of the shaft unit, and the inner diameter from the step toward the other end opening is equal to the outer diameter of the bearing outer ring of the shaft unit. The intermediate roller body is made of a synthetic resin material and has a cylindrical shape, and the other end opening extends beyond the bearing outer ring end face on the fixed end side of the shaft unit, and the intermediate roller body is inserted into and removed from the outer diameter surface of the intermediate roller body. 1. A separate roller assembly comprising: a metal cylindrical shell roller which is press-fittable and has annular grooves in which the flesh portion of the intermediate roller body bulges back to fit at a plurality of locations on the inner diameter surface. 2. Two rolling bearings are mounted on a stepped shaft with a large diameter on the fixed end side, separated by placing a spacer between the inner rings of both bearings, and one bearing inner ring is brought into contact with the shaft shoulder of the stepped shaft. , a shaft unit in which the inner ring of the other bearing is positioned and fixed by tightening it to the free end side of the stepped shaft with a fixing ring; both ends are open, and one end has an inner diameter slightly larger than the outer diameter of the fixing ring of the shaft unit;
It has a small-diameter ring body that forms a step that is locked to the bearing outer ring on the free end side of the shaft unit, and the inner diameter from the step toward the other end opening is equal to the outer diameter of the bearing outer ring of the shaft unit. The other end opening extends to a position beyond the bearing outer ring end surface on the fixed end side of the shaft unit, has annular projections at multiple locations on the outer diameter surface, and further has a cylindrical shape outside the other end opening. an intermediate roller body made of a synthetic resin material and having an annular bulge on its radial surface;
The intermediate roller body is press-fitted into the outer diameter surface of the intermediate roller body in a removable manner, and has annular grooves in which the annular protrusions of the intermediate roller body are fitted at multiple locations on the inner diameter surface, and the inner diameter surface allows the outer diameter surface of the end of the intermediate roller body to be inserted into and removed from the outer diameter surface of the intermediate roller body. and a metal cylindrical shell roller that presses the annular bulge inward in the radial direction to reduce the diameter of the end of the intermediate roller body so as to engage with the fixed side bearing outer ring end surface of the shaft unit. A separate roller assembly characterized by: