CN215998151U

CN215998151U - Supporting roll for straightener

Info

Publication number: CN215998151U
Application number: CN202122266528.1U
Authority: CN
Inventors: 赵旭; 刘立明; 孔德文; 李玲玉; 吕品; 王辉
Original assignee: Tai'an Hualu Metalforming Machine Tool Co ltd
Current assignee: Tai'an Hualu Metalforming Machine Tool Co ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-03-11
Anticipated expiration: 2031-09-18

Abstract

The utility model relates to a backing roll for straightener, backing roll are fixed on the backing roll seat. The bearing inside the supporting roller is a needle bearing and a deep groove ball bearing which are matched for use, has small diameter size and large bearing capacity, and is convenient to arrange in the application occasions with smaller working roller diameter and smaller working roller distance; this supporting roller structure is equipped with independent lubricating structure, is convenient for annotate lubricating grease in to the supporting roller, and the lubricating grease that can save the filling simultaneously for a long time to can improve the operating condition of supporting roller, prolong the life of supporting roller.

Description

Supporting roll for straightener

Technical Field

The invention relates to the field of metal plate forming processing, in particular to a supporting roll of a roll system of a parallel roll straightener.

Background

In the practical application of the straightener, the supporting roll and the working roll are matched to form a working roll system of the straightener; the supporting roll of the straightening machine can rotate along the axis of the supporting roll to support the working roll; in the plate straightening process, the supporting roll and the working roll respectively rotate along the axes of the supporting roll and the working roll, and the supporting roll and the working roll are mutually in rolling friction. The position relation of the working rolls and the supporting rolls of the straightener is shown in figure 1, and a plurality of supporting rolls are fixed on each supporting roll seat to realize the supporting and positioning of all the working rolls; one or more rows of supporting roller seats are arranged along the axial direction of the working roller.

The diameter of the traditional straightening machine supporting roll is often larger, so that the traditional straightening machine supporting roll is not favorable for arrangement in the application occasions where the diameter of the working roll is smaller and the distance between the working rolls is smaller. With the increasingly wide application of small-roll-diameter (working roll diameter) levellers, the supporting roll structure with smaller outer diameter and large bearing capacity is required. In addition, a good lubricating mode is an important component of the supporting roller structure and also an important factor influencing the service life of the supporting roller, and a reasonable supporting roller structure must contain a reasonable lubricating structure.

Disclosure of Invention

For the demand that adapts to small roll diameter leveler backing roll and use, the utility model provides a backing roll for straightener, its technical scheme is:

each group of supporting rollers consists of a supporting roller shaft, a supporting roller sleeve, a middle small spacer bush, a middle large spacer bush, two needle roller bearings, two deep groove ball bearings, two elastic check rings for shafts, two elastic check rings for holes, two outer retaining covers and two framework oil seals;

the small spacer bush is arranged in the axial middle of the supporting roll shaft and corresponds to the oil outlet of the oil hole, the large spacer bush and the small spacer bush are arranged at the same position, and a certain space is reserved between the large spacer bush and the small spacer bush; the two needle roller bearings are respectively arranged on two sides of the large and small spacer sleeves, and the two deep groove ball bearings are respectively arranged on the outer sides of the two needle roller bearings and are positioned by elastic check rings through the two shafts; the two outer blocking covers are respectively arranged at the outer sides of the two deep groove ball bearings, and the framework oil seal is embedded in the outer blocking covers;

the supporting roller sleeve is arranged on the supporting roller shaft, the outer side of the outer retaining cover is positioned by the elastic retainer ring for the hole arranged on the supporting roller sleeve, and the inner hole of the supporting roller sleeve is in transition fit with the needle bearing, the deep groove ball bearing and the outer circle of the outer pressing cover, so that the supporting roller sleeve is positioned relative to the supporting roller shaft.

Furthermore, the inner diameter of the large spacer bush is larger than the outer diameter of the small spacer bush, and a certain space is formed between the large spacer bush and the small spacer bush; the end face of the supporting roller shaft is provided with an oil hole, and an oil outlet of the oil hole is positioned in the middle of the circumference of the supporting roller shaft.

Furthermore, an inner hole is formed in the small spacer sleeve, an annular groove is formed in the part, in contact with the supporting roller shaft, of the small spacer sleeve, a plurality of through holes are formed in the bottom of the annular groove, and lubricating grease entering from an oil outlet of the oil hole of the supporting roller shaft enters the bearing through the grooves, the through holes and the space between the large spacer sleeve and the small spacer sleeve to achieve lubrication.

Furthermore, a concave platform for installing a framework oil seal is arranged on the outer baffle cover, the outer ring of the outer baffle cover is in transition fit with the inner ring of the supporting roller sleeve, and a space formed among the outer baffle ring provided with the framework oil seal, the supporting roller shaft and the supporting roller sleeve is a storage space of lubricating grease.

The utility model has the advantages that: the utility model relates to a supporting roll for a straightener, compared with the supporting roll of the traditional straightener, the diameter size of the supporting roll can be made smaller, and the bearing capacity is ensured, thereby being more convenient for the supporting roll to be arranged under the application occasions that the diameter of the working roll is smaller and the distance between the working rolls is smaller; this supporting roller structure is equipped with independent lubricating structure, is convenient for annotate lubricating grease in to the supporting roller, and the lubricating grease that can save the filling simultaneously for a long time to can improve the operating condition of supporting roller, prolong the life of supporting roller.

Drawings

FIG. 1 is a schematic view showing a positional relationship between work rolls and back-up rolls of a leveler;

FIG. 2 is a schematic view of the internal structure of the support roller;

FIG. 3 is a schematic view of the structure of a small spacer sleeve in the middle of a supporting roller;

FIG. 4 is a schematic view of the structure of the external gland of the supporting roller;

FIG. 5 is a schematic view of a construction of a backup roll shaft;

as shown in the figure: the device comprises a supporting roller seat 1, a supporting roller sleeve 2, a needle roller bearing 3, a deep groove ball bearing 4, an outer retaining cover 5, a framework oil seal 6, a supporting roller shaft 7, an elastic retainer ring for 8 shafts, an elastic retainer ring for 9 holes, a small spacer sleeve 10, a large spacer sleeve 11, an oil hole 12, a set screw 13, a gland 14, a supporting roller 15, a working roller 16 and a plate 17.

Detailed Description

The utility model relates to a backing roll for straightener is shown in fig. 2, a backing roll of parallel roll straightener roller system comprises supporting roller axle 7, supporting roller shell 2, little spacer 10, big spacer 11, two needle bearing 3, two deep groove ball bearing 4, two for the axle circlips 8, two for the hole circlips 9, two outer fender lid 5, two skeleton oil seals 6.

As shown in fig. 1 and 2, the supporting roll 15 is fixed on the supporting roll seat 1, the supporting roll seat 1 has a U-shaped opening structure, semicircular grooves for placing the supporting roll shaft 7 are formed on vertical plates on two sides, and semicircular grooves for placing the supporting roll shaft are also formed on the gland 14; when the gland 14 is installed on the supporting roller seat 1 through the screw, the two semicircular grooves are combined into a complete circular hole which is in interference fit with the shaft head of the supporting roller shaft 7, and when the gland 14 is installed on the supporting roller seat 1, the supporting roller shaft 7 can be tightly pressed and fixed in the circular hole. The gland 14 is provided with a threaded hole, and the set screw 13 is arranged in the threaded hole to tightly press the supporting roller shaft 7 so as to prevent the supporting roller shaft from rotating.

The small spacer bush 10 is arranged in the middle of the supporting roller shaft 7 and corresponds to the oil outlet of the oil hole 12; the large spacer 11 and the small spacer 10 are arranged at the same position and are arranged at the periphery of the small spacer 10; the two needle roller bearings 3 are arranged on two sides of the large and small spacer bushes; the two deep groove ball bearings 4 are arranged at the outer sides of the two needle roller bearings 3; the outer sides of the two deep groove ball bearings 4 are positioned by elastic check rings 8 through two shafts; the large and small spacer bushes, the two needle roller bearings 3 and the two deep groove ball bearings 4 are positioned on the supporting roller shaft 7 through the elastic retainer rings 8 for the two shafts; the framework oil seal 6 is embedded in the outer blocking cover 5, and the outer blocking cover 5 is arranged at the outer side of the two deep groove ball bearings 4; the outer sides of the two outer baffle covers 5 are positioned by two elastic check rings 9 through two holes arranged on the supporting roller sleeve 2; the positioning of the supporting roller sleeve 2 relative to the two outer retaining covers 5 is realized through the elastic retainer rings 9 for the two holes, and the positioning of the supporting roller sleeve 2 relative to the supporting roller shaft 7 is realized through the transition fit of the inner hole of the supporting roller sleeve 2, the needle roller bearing 3, the deep groove ball bearing 4 and the outer circles of the outer retaining covers 5.

The whole supporting roller is designed by adopting a basic hole making concept, and the inner hole of the supporting roller sleeve 2 is a continuous equal-diameter circular hole, so that the inner hole is convenient to process; the outer diameters of the large spacer bush 11, the needle roller bearing 3, the deep groove ball bearing 4 and the outer baffle cover 5 adopt the same basic size selection design; the outer diameter of the supporting roller shaft 7 is designed into a step structure according to the basic sizes of the inner holes of the small spacer bush 10, the needle bearing 3, the deep groove ball bearing 4 and the framework oil seal 6.

Compared with other types of bearings, the needle roller bearing 3 has the smallest outer diameter and larger radial bearing capacity under the condition of the same inner diameter; the deep groove ball bearing 4 can bear certain axial load, is convenient to install and is suitable for supporting roll application occasions with small axial force. Through the cooperation of the needle roller bearing 3 and the deep groove ball bearing 4, the outer diameter of the supporting roller sleeve 2 is correspondingly reduced, and meanwhile, the bearing capacity is guaranteed, so that the application arrangement (the problems that the supporting rollers cannot be arranged due to overlarge diameters and mutual interference) under the application occasions that the diameters of the working rollers 16 (plates 17 are arranged between upper working rollers and lower working rollers in the straightening process) are smaller and the distances between the working rollers are smaller) is facilitated.

An oil hole 12 is processed on the end surface of the supporting roller shaft 7, and an oil outlet of the oil hole 12 is arranged in the middle of the circumference of the supporting roller shaft 7; an inner hole of the small spacer bush 10, which is in contact with the supporting roller shaft 7, is provided with an annular groove, the bottom of the annular groove is provided with a plurality of through holes, the inner diameter of the large spacer bush 11 is larger than the outer diameter of the small spacer bush 10, and a certain space is arranged between the large spacer bush and the small spacer bush; lubricating grease entering through the oil hole 12 of the supporting roller shaft 7 enters the bearing through the groove, the through hole and the space between the large spacer bush and the small spacer bush, so that the purpose of lubrication is achieved.

A concave platform for installing a framework oil seal 6 is processed on the outer blocking cover 5, and the outer ring of the outer blocking cover 5 is in transition fit with the inner ring of the supporting roller sleeve 2; the space formed by the outer retaining cover 5 provided with the framework oil seal 6, the supporting roller shaft 7 and the supporting roller sleeve 2 is a storage space for lubricating grease, and the lubricating grease can be effectively stored in the storage space for a long time, so that the bearing is ensured to be effectively lubricated. Air holes are processed on the outer baffle cover 5 so as to facilitate the smooth addition of lubricating grease.

The utility model relates to a backing roll for straightener, for traditional straightener backing roll, its diameter size can be done littleer, and bearing capacity obtains guaranteeing. Thereby being more convenient for the arrangement of the roller in the application occasions with smaller diameter of the working rollers and smaller distance between the working rollers; this supporting roller structure is equipped with independent lubricating structure, is convenient for annotate lubricating grease in to the supporting roller, and the lubricating grease that can save the filling simultaneously for a long time to can improve the operating condition of supporting roller, prolong the life of supporting roller.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The supporting roll for the straightening machine is characterized in that each group of supporting rolls consists of a supporting roll shaft, a supporting roll sleeve, a middle small spacer bush, a middle large spacer bush, two needle roller bearings, two deep groove ball bearings, two elastic check rings for shafts, two elastic check rings for holes, two outer retaining covers and two framework oil seals;

2. A backup roll for a leveler as defined in claim 1, wherein the inner diameter of the large spacer is larger than the outer diameter of the small spacer with a space therebetween; the end face of the supporting roller shaft is provided with an oil hole, and an oil outlet of the oil hole is positioned in the middle of the circumference of the supporting roller shaft.

3. A back-up roll for a leveler as set forth in claim 1, wherein the small spacers are provided with inner holes, and the portions of the small spacers contacting the back-up roll shaft are provided with annular grooves, and the bottoms of the annular grooves are provided with a plurality of through holes, and the lubricating grease introduced through the oil outlets of the roll shaft oil holes is introduced into the interior of the bearing through the spaces between the grooves, the through holes and the large and small spacers to thereby effect lubrication.

4. A supporting roller for a straightening machine as claimed in claim 1, characterized in that the outer shield is provided with a concave platform for mounting a framework oil seal, the outer ring of the outer shield is in transition fit with the inner ring of the supporting roller sleeve, and the space formed between the outer retainer ring provided with the framework oil seal, the supporting roller shaft and the supporting roller sleeve is a storage space for grease.