A copper strip straightening roller bearing housing assembly structure

Abstract

This utility model discloses an assembly structure for a copper strip straightening roller bearing housing, relating to the technical field of copper alloy strip production equipment. It aims to solve the problems of severe wear, insufficient stability, and reduced work efficiency of existing straightening rollers under high-speed operation. The technical solution includes a straightening roller and a bearing housing. The bearing housing is rotatably connected to the straightening roller via needle roller bearings and thrust bearings. The bearing housing also contains a bearing cap for pressing and limiting the thrust bearing. An end cap is bolted to the bearing housing, and a preload spring is provided between the end cap and the bearing cap. By increasing the size of the needle roller bearings and thrust bearings and setting a preload spring and bearing cap preload mechanism, the wear and axial movement problems under high-speed operation are effectively solved.

Description

Technical Field

[0001] This utility model relates to the technical field of copper alloy strip production equipment, specifically to an assembly structure for a copper strip straightening roller bearing seat. Background Technology

[0002] With the rapid development of social economy and industrial technology, the electronics and electrical appliance industries have put forward increasingly higher requirements for the quality indicators of copper alloy strips, such as the shape accuracy and flatness.

[0003] The industry widely uses 23-roll tension straighteners, which increase the wrap angle of the strip on the rolls by using small-diameter straightening rolls and alternately bending the strip with the upper and lower straightening rolls to reduce or eliminate internal stress in the strip, thereby achieving high straightness. However, due to the small diameter of the straightening rolls, as the production line speed increases, the speed of the straightening rolls also increases, causing serious defects in the existing assembly structure:

[0004] The existing straightening roller bearing housing is equipped with needle roller bearings, thrust bearings, disc springs, washers, and end caps. During high-speed rotation, the axial force on the straightening roller will generate a large force on the thrust bearing and disc spring. However, the disc spring is unstable in operation, which can easily lead to mutual friction between the disc spring, washers, thrust bearing, and roller shaft, causing wear or even burnout of the components.

[0005] Due to the limitation of the straightening roller diameter, the diameter of needle roller bearings and thrust bearings is relatively small. Under radial force and high speed, the bearing has poor stress performance and is prone to wear and scrap.

[0006] This resulted in frequent production line shutdowns, a high scrap rate for straightening rollers, and forced production line speeds to be controlled at 60-80 m / min, with straightening roller speeds only at 1200-1600 r / min, severely impacting production planning and efficiency. Utility Model Content

[0007] The technical problem to be solved by this utility model is to overcome the existing defects and provide an assembly structure for a copper strip straightening roller bearing seat, which can effectively solve the problems in the background art.

[0008] To achieve the above objectives, this utility model discloses an assembly structure for a copper strip straightening roller bearing housing. The technical solution includes a straightening roller shaft and a bearing housing. The bearing housing is rotatably connected to the straightening roller shaft via a needle roller bearing and a thrust bearing. The bearing housing also contains a bearing cap that presses and limits the thrust bearing. An end cap is also connected to the bearing housing via bolts. A preload spring is provided between the end cap and the bearing cap. By increasing the size of the needle roller bearing and the thrust bearing, and by setting a preload spring and a preload mechanism for the bearing cap, the wear and axial movement problems under high-speed operation are effectively solved.

[0009] As a preferred embodiment of the present invention, the straightening roller includes straightening roller A, straightening roller B and straightening roller C, and the diameter of straightening roller A, straightening roller B and straightening roller C decreases sequentially.

[0010] As a preferred technical solution of this utility model, the bearing housing is provided with a through stepped hole, the needle roller bearing is mounted on the straightening roller shaft B, and the thrust bearing is mounted on the straightening roller shaft C. The stepped straightening roller shaft and the stepped hole on the bearing housing cooperate to ensure accurate bearing positioning. Combined with the lubrication function of the grease nipple, the wear rate of the needle roller bearing, thrust bearing and straightening roller shaft is greatly reduced, the scrapping of straightening rollers and the frequency of production line downtime are reduced, and the equipment maintenance cost is reduced.

[0011] As a preferred embodiment of this utility model, the end cap is further provided with an oil injection nozzle, and the stepped hole is connected to the outside through the oil injection nozzle.

[0012] As a preferred technical solution of this utility model, the bearing cover and the thrust bearing are provided with a boss on the opposite side for tightening and limiting the thrust bearing; at the center of the other side of the bearing cover, a receiving groove adapted to the preload spring is provided, and the preload spring continuously presses the thrust bearing through the bearing cover, eliminating the sliding friction between the components.

[0013] As a preferred technical solution of this utility model, a slot is provided on the circumference of the bearing cover and the end cover facing each other, and a locking block is provided on the end cover that corresponds to the position of the slot and matches the size.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: By increasing the size of the needle roller bearing and thrust bearing and setting a preload mechanism between the preload spring and the bearing cover, this utility model effectively solves the problems of wear and axial movement under high-speed operation, thereby increasing the speed of the straightening roller from 1200-1600 r / min to 3000-3600 r / min and the production line speed from 60-80 m / min to 150-180 m / min, significantly improving production efficiency.

[0015] The preload spring continuously presses against the thrust bearing through the bearing cap, eliminating sliding friction between components. The stepped straightening roller shaft matches the stepped holes on the bearing housing, ensuring accurate bearing positioning. Combined with the lubrication function of the grease nipple, this significantly reduces the wear rate of the needle roller bearing, thrust bearing, and straightening roller shaft, reducing the scrapping frequency of the straightening roller and the downtime of the production line, and lowering equipment maintenance costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 For the purpose of this utility model explosion Figure 1 ;

[0018] Figure 3 For the purpose of this utility model explosion Figure 2 ;

[0019] Figure 4 This is a cross-sectional view of the present invention.

[0020] In the diagram: 1. Straightening roller A; 2. Needle roller bearing; 3. Straightening roller B; 4. Thrust bearing; 5. Bearing cap; 6. Preload spring; 7. End cap; 8. Bearing housing; 9. Oil nozzle; 10. Straightening roller C; 51. Boss; 52. Slot; 53. Receiving groove; 71. Locking block; 81. Stepped hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0022] like Figures 1 to 4 As shown, this utility model discloses an assembly structure for a copper strip straightening roller bearing seat. The technical solution adopted includes a straightening roller shaft and a bearing seat 8. The bearing seat 8 is rotatably connected to the straightening roller shaft through a needle roller bearing 2 and a thrust bearing 4.

[0023] The straightening rollers include straightening roller A1, straightening roller B3, and straightening roller C10, and the diameters of straightening roller A1, straightening roller B3, and straightening roller C10 decrease sequentially.

[0024] The bearing housing 8 has a through stepped hole 81. The needle roller bearing 2 is mounted on the straightening roller B3, and the thrust bearing 4 is mounted on the straightening roller C10. The needle roller bearing 2 mainly bears radial force, and the thrust bearing 4 mainly bears axial force.

[0025] The bearing housing 8 is also provided with a bearing cover 5 for pressing and limiting the thrust bearing 4. An end cover 7 is also connected to the bearing housing 8 by bolts. A preload spring 6 is also provided between the end cover 7 and the bearing cover 5.

[0026] The bearing cap 5 and the thrust bearing 4 are provided with a boss 51 on the opposite side for tightening and limiting the thrust bearing 4.

[0027] The end cap 7 is fixed to the bearing housing 8 by bolts. The preload spring 6 between the end cap 7 and the bearing cover 5 provides a continuous preload force to the bearing cover 5, ensuring that the thrust bearing 4 is always in a tight fit.

[0028] At the center of the other side of the bearing cap 5, a receiving groove 53 adapted to the preload spring 6 is provided.

[0029] A slot 52 is provided on the circumference of the bearing cover 5 and the end cover 7 facing each other. The end cover 7 is provided with a locking block 71 that corresponds to the position of the slot 52 and matches its size.

[0030] The end cap 7 is also provided with an oil injection nozzle 9, and the stepped hole 81 is connected to the outside through the oil injection nozzle 9. Lubricant can be injected into the stepped hole 81 of the bearing housing 8 through the oil injection nozzle 9 to provide continuous lubrication for the needle roller bearing 2 and the thrust bearing 4, and further reduce wear.

[0031] The circuits and mechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. They are common knowledge.

[0032] Components not described in detail in this article are existing technologies.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An assembly structure for a copper strip straightening roller bearing seat, characterized in that: It includes a straightening roller shaft and a bearing housing (8). The bearing housing (8) is rotatably connected to the straightening roller shaft through a needle roller bearing (2) and a thrust bearing (4). The bearing housing (8) is also provided with a bearing cover (5) to press and limit the thrust bearing (4). An end cover (7) is also connected to the bearing housing (8) by bolts. A preload spring (6) is also provided between the end cover (7) and the bearing cover (5).

2. The assembly structure of a copper strip straightening roller bearing seat according to claim 1, characterized in that: The straightening rollers include straightening roller A (1), straightening roller B (3) and straightening roller C (10), and the diameters of straightening roller A (1), straightening roller B (3) and straightening roller C (10) decrease sequentially.

3. The assembly structure of a copper strip straightening roller bearing seat according to claim 2, characterized in that: The bearing housing (8) has a through stepped hole (81), the needle roller bearing (2) is mounted on the straightening roller B (3), and the thrust bearing (4) is mounted on the straightening roller C (10).

4. The assembly structure of a copper strip straightening roller bearing seat according to claim 3, characterized in that: The end cap (7) is also provided with an oil injection nozzle (9), and the stepped hole (81) is connected to the outside through the oil injection nozzle (9).

5. The assembly structure of a copper strip straightening roller bearing seat according to claim 1, characterized in that: The bearing cap (5) and the thrust bearing (4) are provided with a boss (51) on the opposite side for tightening and limiting the thrust bearing (4); at the center of the other side of the bearing cap (5), there is a receiving groove (53) that is compatible with the preload spring (6).

6. The assembly structure of a copper strip straightening roller bearing seat according to claim 1 or 5, characterized in that: A slot (52) is provided on the circumference of the bearing cap (5) and the end cap (7) facing each other. The end cap (7) is provided with a locking block (71) that corresponds to the position of the slot (52) and matches its size.

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