CN217831234U - Continuous rolling mill mandrel positioning device - Google Patents
Continuous rolling mill mandrel positioning device Download PDFInfo
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- CN217831234U CN217831234U CN202221924549.6U CN202221924549U CN217831234U CN 217831234 U CN217831234 U CN 217831234U CN 202221924549 U CN202221924549 U CN 202221924549U CN 217831234 U CN217831234 U CN 217831234U
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- mandrel
- positioning baffle
- continuous rolling
- rolling mill
- positioning
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Abstract
The application discloses tandem mill plug positioner relates to steel pipe production technical field, including the positioning baffle, the positioning baffle sets up in the end of the lubricated back roll table of plug, the positioning baffle can follow the rolling central line direction of tandem mill and remove for the actual length according to the present production hollow billet changes plug off-position. The position of the movable positioning baffle is adjusted according to the actual length of the currently produced hollow billet, the stop position of the mandrel is changed, and when the mandrel is transversely moved to the mandrel supporting roll of the rolling center line of the continuous rolling mill, the distance between the head of the mandrel and the tail of the hollow billet is kept within a smaller distance range, so that the running distance of the mandrel before penetrating into the hollow billet is reduced, and the production efficiency of the continuous rolling mill can be improved.
Description
Technical Field
The application relates to the technical field of steel pipe production, in particular to a mandrel positioning device of a continuous rolling mill.
Background
As one of the main deformation processes in the production of hot-rolled seamless steel pipes, the retained mandrel continuous rolling mill has the main function of reducing the wall thickness and rolling the wall thickness of a hollow tubular billet to be close to the wall thickness of a finished product. The reduction of the wall thickness of the hollow billet is realized under the combined action of a roller of a continuous rolling mill and a core rod, and the core rod is a key internal deformation tool.
After the continuous rolling mill finishes rolling, the mandrel is retreated to the starting position of the limiting device after being separated from the hollow billet, is transversely moved to a mandrel returning roller way by the material shifting device, is conveyed by the returning roller way to sequentially pass through the tunnel cooling device, the mandrel cooling station and the mandrel graphite lubricating device, is cooled and lubricated, and then is rolled on line again. In order to ensure the rolling rhythm, 6 to 7 core rods are generally circulated in-line at the same time.
And after the currently rolled core rod is returned to the proper position, the material shifting device transversely moves the rolled core rod to the return roller way, and meanwhile, the other set of material shifting device transversely moves the lubricated core rod to a core rod supporting roller of the rolling center line of the continuous rolling mill to start the next rolling period.
The conventional mandrel positioning process is characterized in that a positioning baffle with a fixed position is arranged at the tail end of a roller way after a mandrel is lubricated, the stop position of the mandrel is fixed for all specifications of hollow billets, the mandrel is transversely moved onto a mandrel supporting roller of a continuous rolling mill rolling center line from a conveying roller way, the distance between the head of the mandrel and the tail of the hollow billet is changed for hollow billets with different lengths, and the running time of the mandrel before penetrating into the hollow billet is increased along with the reduction of the length of the hollow billet.
The running time of the mandrel penetrating is increased, so that the rolling cycle time of the continuous rolling mill is increased, the production rhythm of the continuous rolling mill is reduced, and the production efficiency and the yield of the whole continuous rolling production line are reduced.
SUMMERY OF THE UTILITY MODEL
In view of the defects of the conventional mandrel positioning process of the continuous rolling mill, the mandrel positioning device of the continuous rolling mill is provided, the mandrel positioning process is optimized, the running time of a mandrel before penetrating into a hollow billet is reduced, the rolling rhythm time of the continuous rolling mill is reduced, and the production efficiency of the continuous rolling mill is improved.
The application provides a tandem mill plug positioner adopts following technical scheme:
the positioning baffle can move along the rolling central line direction of the continuous rolling mill and is used for changing the stop position of the mandrel according to the actual length of the currently produced hollow billet.
Optionally, the positioning baffle further comprises a buffer assembly for swinging the positioning baffle backwards when being impacted by the core rod.
Optionally, the buffering assembly comprises an installation table and a damper, the positioning baffle swings back and forth on the installation table, and the damper is arranged in the installation table and hinged to the bottom side of the positioning baffle.
Optionally, a connecting plate is arranged on the bottom side of the positioning baffle, the middle position of the connecting plate is rotatably connected with the mounting table, and the bottom end of the connecting plate is hinged to the telescopic end of the damper.
Optionally, the installation platform can move on the slide rail along the rolling center line direction of the continuous rolling mill, and the installation platform can be fixed on the slide rail after moving to a proper position.
Optionally, a reinforcing plate is arranged on one side of the positioning baffle plate, which is used for bearing the impact of the core rod
In summary, the present application includes at least one of the following advantages: the position of the movable positioning baffle is adjusted according to the actual length of the currently produced capillary, the stop position of the mandrel is changed, and the distance between the head of the mandrel and the tail of the capillary is kept in a smaller distance range when the mandrel is transversely moved to a mandrel supporting roll of a rolling center line of the continuous rolling mill, so that the running distance of the mandrel before penetrating into the capillary is reduced, and the production efficiency of the continuous rolling mill can be improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present application.
Fig. 2 is a schematic diagram of practical application of the embodiment of the present application.
Description of the reference numerals:
1. positioning a baffle plate; 11. a connecting plate; 12. reinforcing the plate; 2. a buffer assembly; 21. an installation table; 22. a damper; 3. a slide rail.
Detailed Description
The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. The application is capable of other and different embodiments and its several details are capable of modifications and various changes in detail without departing from the spirit of the application.
Wherein the showings are for the purpose of illustration only and not for the purpose of limiting the invention, shown in the drawings are schematic representations and not in the form of actual drawings; to better explain the embodiments of the present application, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application provides a mandrel positioning device of a continuous rolling mill. Referring to fig. 1, the continuous rolling mill mandrel positioning device comprises a movable positioning baffle 1, a buffer assembly 2 and a slide rail 3, wherein the buffer assembly 2 is used for reducing the impact force of the positioning baffle 1 on a mandrel, the positioning baffle 1 is arranged at the tail end of a lubricated roller way of the mandrel, and the positioning baffle 1 can move along the rolling central line direction of the continuous rolling mill and is used for changing the stop position of the mandrel according to the actual length of a currently produced capillary.
Buffer unit 2 includes mount table 21 and attenuator 22, attenuator 22 fixed mounting is in mount table 21, vertical the installing on mount table 21 of positioning baffle 1, because the impact force of plug is great, in order to reduce the impact force that positioning baffle 1 received, positioning baffle 1's bottom side is provided with connecting plate 11, connecting plate 11's low side is located mount table 21, and it is articulated in attenuator 22's flexible end, connecting plate 11's intermediate position and mount table 21 rotate to be connected, mount table 21 can move on slide rail 3, the convenience is removed positioning baffle 1's position before the production, move mount table 21 on slide rail 3, make positioning baffle 1's position suitable back lock mount table 21 on slide rail 3. When a mandrel impacts the positioning baffle 1, the positioning baffle 1 swings backwards under the action of the mandrel, the positioning baffle 1 can provide tension for the damper 22 when swinging backwards, the damper 22 can provide forward swinging force for the positioning baffle 1, and after the impact force of the mandrel is reduced, the positioning baffle 1 swings to the original position under the action of the damper 22. While the maximum force that the damper 22 can withstand needs are determined by the specifications of the core rod produced in the actual situation.
Meanwhile, the positioning baffle 1 is easily deformed and damaged due to the fact that the positioning baffle 1 is impacted by the core rod for a long time, in order to enable the positioning baffle 1 to bear larger impact force, a reinforcing plate 12 is fixedly installed on one surface, facing the impact of the core rod, of the positioning baffle 1, the core rod impacts the reinforcing plate 12 when impacting the positioning baffle 1, the core rod can be prevented from directly impacting the positioning baffle 1, and the possibility that the positioning baffle 1 is deformed and damaged is reduced.
The implementation principle of the mandrel positioning device of the continuous rolling mill is as follows: in the continuous rolling production line, when the production is started or the specification of a produced finished product needs to be adjusted, the movable positioning baffle is moved to a position 200mm (safety margin and adjustable distance) away from the tail part of the hollow billet in advance according to the theoretical length of the hollow billet in a production plan, namely after the mandrel stops, the distance between the head part of the mandrel and the tail part of the hollow billet is 200mm; after the new specification starts to be produced, whether the position of the positioning baffle needs to be adjusted or not is judged according to the length of the actual capillary, and the distance between the head of the mandrel and the tail of the capillary is the minimum on the premise of considering the safety margin.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (6)
1. A continuous rolling mill mandrel positioning device is characterized in that: the device comprises a positioning baffle (1), wherein the positioning baffle (1) is arranged at the tail end of a roller way after the mandrel is lubricated, and the positioning baffle (1) can move along the rolling central line direction of a continuous rolling mill and is used for changing the stop position of the mandrel according to the actual length of the currently produced hollow billet.
2. The tandem mill mandrel positioning apparatus of claim 1, wherein: the positioning baffle plate device also comprises a buffer assembly (2) used for enabling the positioning baffle plate (1) to swing backwards when being impacted by a core rod.
3. A tandem mill mandrel positioning apparatus as set forth in claim 2, wherein: the buffer assembly (2) comprises an installation platform (21) and a damper (22), the positioning baffle (1) swings back and forth on the installation platform (21), and the damper (22) is arranged in the installation platform (21) and hinged to the bottom side of the positioning baffle (1).
4. A tandem mill mandrel positioning apparatus as set forth in claim 3, wherein: the bottom side of the positioning baffle (1) is provided with a connecting plate (11), the middle position of the connecting plate (11) is rotatably connected with the mounting table (21), and the bottom end of the connecting plate (11) is hinged with the telescopic end of the damper (22).
5. The tandem mill mandrel positioning apparatus of claim 4, wherein: the continuous rolling mill is characterized by further comprising a sliding rail (3), the mounting table (21) can move on the sliding rail (3) along the rolling center line direction of the continuous rolling mill, and the mounting table (21) can be fixed on the sliding rail (3) when moving to a proper position.
6. A tandem mill mandrel positioning apparatus according to claim 1, wherein: and a reinforcing plate (12) is arranged on one side of the positioning baffle (1) for bearing the impact of the core rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221924549.6U CN217831234U (en) | 2022-07-25 | 2022-07-25 | Continuous rolling mill mandrel positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221924549.6U CN217831234U (en) | 2022-07-25 | 2022-07-25 | Continuous rolling mill mandrel positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217831234U true CN217831234U (en) | 2022-11-18 |
Family
ID=84038989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221924549.6U Active CN217831234U (en) | 2022-07-25 | 2022-07-25 | Continuous rolling mill mandrel positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217831234U (en) |
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2022
- 2022-07-25 CN CN202221924549.6U patent/CN217831234U/en active Active
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