Roller device of stainless steel tube rolling machine
By introducing coolant into the roller assembly of the stainless steel pipe rolling mill, the problem of dimensional deviation caused by roller thermal expansion was solved, thus improving processing accuracy and surface quality.
Patent Information
- Application Number
- CN202520605457.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-04-02
AI Technical Summary
In the prior art, the dimensional deviation of stainless steel pipes occurs due to thermal expansion of the rollers in the stainless steel pipe rolling mill during processing.
Design a roller device with a cooling effect, which cools the roller by circulating coolant into the inner cavity of the rotating shaft to avoid thermal expansion.
This effectively avoids dimensional deviations caused by thermal expansion during the rolling process of stainless steel pipes, improving the processing accuracy of the rollers and the surface quality of the stainless steel pipes.
Smart Images
Figure CN223916294U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rolling mill rollers, and more particularly to a roller device for a stainless steel pipe rolling mill. Background Technology
[0002] The rollers in the stainless steel pipe rolling mill roll the stainless steel billet into the target pipe shape and size through multiple rolling passes. The smoothness and precision of the rollers determine the quality of the inner and outer surfaces of the stainless steel pipe. At the same time, some rollers are designed as drive rollers to drive the pipe to move stably during the rolling process.
[0003] The rollers in the stainless steel pipe rolling mill process the stainless steel pipe by contact extrusion. This extrusion generates heat between the rollers and the stainless steel pipe, and the heat causes thermal expansion, which leads to dimensional deviations in the stainless steel pipe. Utility Model Content
[0004] In view of this, the present invention provides a roller device for a stainless steel pipe rolling mill, and the main technical problem to be solved is: to provide a roller for a stainless steel pipe rolling mill with a cooling effect.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a roller device for a stainless steel pipe rolling mill, comprising a bracket, the bracket having a U-shaped structure, a bearing installed inside the bracket, a rotating shaft installed inside the bearing, rollers fixedly connected to the outer surface of the rotating shaft, the rollers being located between the brackets, an inner cavity being opened inside the rotating shaft, and two gears fixedly connected to the outer surface of the rotating shaft, the two gears being located on the left and right sides of the bracket respectively.
[0006] By adopting the above technical solution, the drive equipment rotates the gear during use, so that the rotating shaft can rotate inside the bracket through the bearing, thereby driving the roller to rotate inside the bracket, thus rolling the stainless steel tube. When the roller is working, coolant can be introduced into the inner cavity. After the coolant enters the rotating shaft, it can cool the roller, thereby avoiding thermal expansion that could cause dimensional deviations in the stainless steel tube.
[0007] As a further description of the above technical solution:
[0008] The surface of the roller is provided with a groove, and the cross-sectional structure of the groove is an arc shape.
[0009] By adopting the above technical solution, it is easier for rollers to process stainless steel pipes.
[0010] As a further description of the above technical solution:
[0011] Protective covers are movably connected to both ends of the rotating shaft.
[0012] By adopting the above technical solution, it is easy to inject coolant into the inner cavity of the rotating shaft.
[0013] As a further description of the above technical solution:
[0014] The surface of the rotating shaft has a slot, and the protective cover is installed inside the slot.
[0015] By adopting the above technical solution, the protective cover can be installed on the rotating shaft, and the protective cover does not rotate with the rotating shaft.
[0016] As a further description of the above technical solution:
[0017] A connecting pipe is fixedly connected inside the protective cover, with one end of the connecting pipe located inside the inner cavity.
[0018] By adopting the above technical solution, it is easy to inject coolant into the inner cavity to cool the roller.
[0019] As a further description of the above technical solution:
[0020] The surface of the bracket has a through hole, and a connecting rod is fixedly connected to the outer surface of the protective cover, with one end of the connecting rod located inside the through hole.
[0021] By adopting the above technical solution, it is easy to install the protective cover on one end of the rotating shaft.
[0022] By employing the above technical solution, the roller device of the stainless steel pipe rolling mill of this utility model has at least the following beneficial effects:
[0023] 1. Compared with the prior art, the roller device of this stainless steel pipe rolling mill drives the gear to rotate during use, so that the rotating shaft can rotate inside the support through the bearing, thereby driving the roller to rotate inside the support, thus rolling the stainless steel pipe. When the roller is working, coolant can be introduced into the inner cavity. After the coolant enters the rotating shaft, it can cool the roller, thereby avoiding thermal expansion that could cause dimensional deviations in the stainless steel pipe.
[0024] 2. Compared with the prior art, the roller device of this stainless steel pipe rolling mill has two protective covers, which allow coolant to be injected into the roller through a connecting pipe on one protective cover and discharged through a connecting pipe on the other protective cover, thereby cooling the roller. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the overall structure of the roller device of a stainless steel pipe rolling mill proposed in this utility model.
[0026] Figure 2 This is a front view of the overall structure of the roller device of a stainless steel pipe rolling mill proposed in this utility model.
[0027] Figure 3 This is a cross-sectional view of the internal structure of the roller device of a stainless steel pipe rolling mill proposed in this utility model.
[0028] Figure 4 This utility model proposes a roller device for a stainless steel pipe rolling mill. Figure 3 Enlarged view of the structure at point A in the middle.
[0029] Legend:
[0030] 1. Bracket; 2. Bearing; 3. Shaft; 4. Roller; 5. Inner cavity; 6. Gear; 7. Protective cover; 8. Slot; 9. Connecting pipe; 10. Through hole; 11. Connecting rod. Detailed Implementation
[0031] Reference Figure 1-4 This utility model provides a roller device for a stainless steel pipe rolling mill: it includes a support 1, the support 1 has a U-shaped structure, a bearing 2 is installed inside the support 1, a rotating shaft 3 is installed inside the bearing 2, and a roller 4 is fixedly connected to the outer surface of the rotating shaft 3. The roller 4 is located between the supports 1. The rotating shaft 3 has an inner cavity 5, and two gears 6 are fixedly connected to the outer surface of the rotating shaft 3. The two gears 6 are located on the left and right sides of the support 1 respectively. When in use, the driving device drives the gears 6 to rotate, so that the rotating shaft 3 can rotate inside the support 1 through the bearing 2, thereby driving the roller 4 to rotate inside the support 1, thus rolling the stainless steel pipe. When the roller 4 is working, coolant can be introduced into the inner cavity 5. After the coolant enters the rotating shaft 3, it can cool the roller 4, thereby avoiding thermal expansion that could cause dimensional deviations in the stainless steel pipe.
[0032] The surface of roller 4 is provided with grooves, and the cross-sectional structure of the grooves is arc-shaped, which facilitates the processing of stainless steel pipes by roller 4.
[0033] Protective covers 7 are movably connected to both ends of the rotating shaft 3 to facilitate the injection of coolant into the inner cavity 5 of the rotating shaft 3. The surface of the rotating shaft 3 has a slot 8, and the protective cover 7 is installed inside the slot 8, so that the protective cover 7 can be installed on the rotating shaft 3 and does not rotate with the rotating shaft 3. A connecting pipe 9 is fixedly connected inside the protective cover 7, and one end of the connecting pipe 9 is located inside the inner cavity 5 to facilitate the injection of coolant into the inner cavity 5 to cool the roller 4. A through hole 10 is opened on the surface of the bracket 1, and a connecting rod 11 is fixedly connected to the outer surface of the protective cover 7. One end of the connecting rod 11 is located inside the through hole 10 to facilitate the installation of the protective cover 7 on one end of the rotating shaft 3.
[0034] Working principle: During use, the drive device drives the gear 6 to rotate, so that the rotating shaft 3 can rotate inside the bracket 1 through the bearing 2, which in turn drives the roller 4 to rotate inside the bracket 1, thereby rolling the stainless steel tube. When the roller 4 is working, coolant can be introduced into the inner cavity 5. After the coolant enters the rotating shaft 3, it can cool the roller 4, thereby avoiding thermal expansion that could cause dimensional deviations in the stainless steel tube.
[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A roller assembly for a stainless steel pipe rolling mill, comprising a support (1), characterized in that: The bracket (1) has a U-shaped structure. A bearing (2) is installed inside the bracket (1). A rotating shaft (3) is installed inside the bearing (2). A roller (4) is fixedly connected to the outer surface of the rotating shaft (3). The roller (4) is located between the brackets (1). An inner cavity (5) is opened inside the rotating shaft (3). A gear (6) is fixedly connected to the outer surface of the rotating shaft (3). There are two gears (6). The two gears (6) are located on the left and right sides of the bracket (1) respectively.
2. The roller device of a stainless steel pipe rolling mill according to claim 1, characterized in that: The surface of the roller (4) is provided with a groove, and the cross-sectional structure of the groove is an arc-shaped structure.
3. The roller device of a stainless steel pipe rolling mill according to claim 1, characterized in that: Protective covers (7) are movably connected to both the left and right ends of the rotating shaft (3).
4. The roller device of a stainless steel pipe rolling mill according to claim 3, characterized in that: The surface of the rotating shaft (3) is provided with a slot (8), and the protective cover (7) is installed inside the slot (8).
5. The roller device of a stainless steel pipe rolling mill according to claim 3, characterized in that: The protective cover (7) is fixedly connected to a connecting pipe (9), one end of which is located inside the inner cavity (5).
6. The roller device of a stainless steel pipe rolling mill according to claim 3, characterized in that: The support (1) has a through hole (10) on its surface, and a connecting rod (11) is fixedly connected to the outer surface of the protective cover (7), with one end of the connecting rod (11) located inside the through hole (10).