CN114289542A - Rotary rolling head type seamless pipe production line - Google Patents
Rotary rolling head type seamless pipe production line Download PDFInfo
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- CN114289542A CN114289542A CN202210021918.9A CN202210021918A CN114289542A CN 114289542 A CN114289542 A CN 114289542A CN 202210021918 A CN202210021918 A CN 202210021918A CN 114289542 A CN114289542 A CN 114289542A
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Abstract
The invention discloses a rotary rolling head type seamless tube production line, which comprises a blank scroll, a straightening machine, a seamless tube rolling mill and a finished product scroll, wherein the blank scroll, the straightening machine, the seamless tube rolling mill and the finished product scroll are sequentially arranged on a straight line, a blank for rolling a seamless tube is wound on the blank scroll, the end head of the blank extends forwards through the straightening machine and extends into the seamless tube rolling mill, a mandrel of the seamless tube rolling mill is embedded into a central hole of the blank, the blank is rolled by the seamless tube rolling mill, and a rolled finished product continues to extend forwards and is wound on the finished product scroll. The rolling device is reasonable in layout, a new production line is formed by improving and selecting equipment, the rolling of the reel type seamless pipe is realized by the technological processes of pipe releasing, straightening, rolling and coiling, and the continuous seamless pipe formed by rolling for multiple times is larger in length and directly meets the use requirement of a deep well; the large-length seamless pipe has no welding seam interface, stable performance, long service life and smaller probability of problems.
Description
Technical Field
The invention relates to the technical field of seamless tube production equipment, in particular to a rotary rolling head type seamless tube production line.
Background
The length of a general seamless pipe is not more than 80m, and when the length exceeds 100m, the pipe is called a large length. The conventional seamless steel tube rolling is performed by rotating a steel tube, the original rolling mill can only roll the seamless steel tube by the rotation of the steel tube and the non-rotation of the rolling mill, but when the seamless steel tube is large in length, the seamless steel tube blank cannot rotate due to the limitation of the length of a production line and the length of a central mandrel bar, and the production of a large-length product of the seamless steel tube is limited. The existing stainless steel seamless tube preparation method can not carry out long-length continuous production, can only meet the purpose of long length through tube-tube butt welding, and has the defects of uneven weld joint structure, incapability of eliminating welding stress or other welding defects due to the existence of tube-tube butt welding. Therefore, how to provide a rotary-binding seamless tube production line, which performs rolling by a rotary rolling head in a pay-off and straightening manner, becomes a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention aims to provide a rotary rolling head type seamless tube production line which is manufactured by paying off, straightening, rolling and rolling processes, wherein a rolling machine adopts a rotary rolling head structure, and two sides can be produced by using conventional equipment, so that the production line is convenient to arrange, and the rolling operation of a long seamless tube is realized.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a rotary rolling head type seamless tube production line which comprises a blank scroll, a straightening machine, a seamless tube rolling mill and a finished product scroll, wherein the blank scroll, the straightening machine, the seamless tube rolling mill and the finished product scroll are sequentially arranged on the same straight line; the blank reel, the straightening machine and the finished product reel are all electrically connected with the first PLC, and the seamless pipe rolling mill is all electrically connected with the second PLC.
Furthermore, an unwinding speed controller is arranged between the blank scroll and the straightening machine, a winding speed controller is arranged between the seamless tube rolling mill and the finished product scroll, and the unwinding speed controller and the winding speed controller are electrically connected with the first PLC.
Further, at least one set of support rollers is arranged between the seamless tube rolling mill and the winding speed controller, and when the distance between the seamless tube rolling mill and the winding speed controller is increased, the number of the support rollers is increased according to the requirement.
Further, a mandrel bar detector is arranged at the front end of the seamless tube rolling mill.
Furthermore, the seamless tube rolling mill adopts a rotary rolling head type structure and comprises a base, a rolling head case, a rotating shaft and a rotary driving device, wherein the rolling head case is rotatably connected to the base through a rotary supporting piece, the rotary supporting piece is installed on the rotary support, one end of the rolling head case is connected with the hollow rotating shaft, and the rotating shaft is connected with the rotary driving device and is driven to rotate through the rotary driving device; and an outer shell is arranged around the base.
Furthermore, the rotary driving device comprises a rotary driving motor, a driving wheel and a driven wheel, the rotary driving motor is installed inside or on one side of the base, the driving wheel is installed on an output shaft of the rotary driving motor, the driven wheel is installed on the rotating shaft, and the driving wheel and the driven wheel are connected together through a conveying belt.
Further, when the driving wheel and the driven wheel both adopt gears, the driving wheel and the driven wheel are meshed and connected, and the diameter of the driven wheel is larger than that of the driving wheel.
Furthermore, the rotating support member specifically adopts bearings, two bearings are installed on the rotating support, and the bearings are matched with the outer diameters of the two ends of the roller case.
Compared with the prior art, the invention has the beneficial technical effects that:
the rotary rolling head type seamless pipe production line comprises a blank scroll, a straightening machine, a seamless pipe rolling mill and a finished product scroll which are sequentially arranged, wherein the blank scroll and the finished product scroll directly adopt the existing scroll, so that the seamless pipe can be put in a pipe and stored in a coil pipe without further development, and the design and manufacturing cost is saved; during rolling, the blank is first straightened in a straightening machine before rolling, the rolling head of the seamless pipe rolling mill reciprocates back and forth to reduce the diameter of the seamless pipe, and the rolling head rotates around the axis of the seamless pipe during rolling to ensure the quality of the seamless pipe. The arrangement of the new production line realizes the technological processes of unreeling, straightening, rolling and reeling, thereby realizing the change of a straight pipe to a reel mode of the blank pipe and the new blank pipe (finished products after rolling), and effectively prolonging the total length of the seamless pipe.
In general, the invention has reasonable layout, forms a new production line through the improvement and selection of equipment, realizes the rolling of the reel type seamless pipe through the technological processes of pipe releasing, straightening, rolling and coiling, and the continuous seamless pipe formed by rolling for many times has larger length and directly meets the use requirement of a deep well; the large-length seamless pipe has no welding seam interface, stable performance, long service life and smaller probability of problems.
Drawings
The invention is further illustrated in the following description with reference to the drawings.
FIG. 1 is a front view of a rotary-headed seamless tube production line of the present invention;
FIG. 2 is a schematic view of a seamless tube rolling mill of the present invention;
description of reference numerals: 1. a blank reel; 2. an unwinding speed controller; 3. a straightening machine; 4. a core rod detector; 5. a seamless tube rolling mill; 6. a support roller; 7. a winding speed controller; 8. a finished product reel;
501. a base; 502. a heading machine box; 503. rolling a head; 504. a rotating shaft; 505. a bearing; 506. a rotary drive motor; 507. a driving wheel; 508. a driven wheel; 509. rotating the bracket; 510. an outer casing.
Detailed Description
As shown in fig. 1-2, a rotary rolling head type seamless tube production line includes a blank reel 1, a leveler 3, a seamless tube rolling mill 5, and a finish reel 8, the blank reel 1, the leveler 3, the seamless tube rolling mill 5, and the finish reel 8 being arranged in order on a straight line; in operation, a blank for rolling a seamless tube is wound on the blank reel 1, the end of the blank extends forwards through the straightener 3 and into the seamless tube rolling mill 5, the mandrel of the seamless tube rolling mill 5 is embedded in the central hole of the blank, and the finished product formed by rolling continues to extend forwards and is wound on the finished reel 8 after being rolled by the seamless tube rolling mill 5; the automatic straightening and uncoiling device is characterized by further comprising two PLC controllers, the blank reel 1, the straightening machine 3 and the finished product reel 8 are all electrically connected with the first PLC controller, the seamless pipe rolling mill 5 is all electrically connected with the second PLC controller to achieve automatic control, and concretely, the PLC controllers adopt Siemens S7-1200PLC controllers. Besides, related devices for grinding, deoiling and solid solution of the tube blank are arranged before and after the seamless tube rolling, the devices are the same as the conventional design, and the corresponding devices can be assembled at the corresponding positions of the production line.
Specifically, be provided with between blank spool 1 and the straightener 3 and unreel speed controller 2, be provided with rolling speed controller 7 between seamless pipe rolling mill 5 and the finished product spool 8, unreel speed controller, rolling speed controller all with a PLC controller electricity is connected, according to actual production efficiency, can adjust the speed of unreeling, rolling at any time, guarantees the qualification degree of coiling.
Specifically, at least one set of support rollers 6 is provided between the seamless tube rolling mill 5 and the take-up speed controller 7, and the number of the support rollers 6 is increased as needed when the distance between the seamless tube rolling mill 5 and the take-up speed controller 7 is increased. The supporting roller 6 can also adopt a supporting frame structure, so that a certain height is kept for supporting and rolling a finished seamless pipe, the cleanness of the seamless pipe is kept, and the pollution caused by falling to the ground in the production of the seamless pipe is avoided.
Specifically, the mandrel bar detector 4 is provided at the front end of the seamless tube rolling mill 5. The mandrel of the seamless tube rolling mill 5 adopts a floating mandrel, and the position of the mandrel is monitored at any time by a mandrel detector 4 to ensure the rolling quality. The seamless tube rolling mill 5 may be a floating mandrel mill known in the art, and may be installed in the production line, specifically referred to as 201510068531.9 entitled floating mandrel mill train for small-diameter seamless tubes and seamless tube production process.
Specifically, the seamless tube rolling mill 5 adopts a rotary rolling head type structure, and comprises a base 501, a rolling head case 502, a rotating shaft 504 and a rotary driving device, wherein the rolling head case 502 is rotatably connected to the base 501 through a rotary supporting piece, the rotary supporting piece is installed on a rotary support 509, one end of the rolling head case 502 is connected with the hollow rotating shaft 504, and the rotating shaft 504 is connected with the rotary driving device and is driven to rotate through the rotary driving device; an outer casing 510 is arranged around the base 501.
In one embodiment, the rotation driving device comprises a rotation driving motor 506, a driving wheel 507 and a driven wheel 508, the rotation driving motor 506 is installed inside or on one side of the base 501, the driving wheel 507 is installed on an output shaft of the rotation driving motor 506, the driven wheel 508 is installed on the rotating shaft 504, and the driving wheel 507 and the driven wheel 508 are connected together through a conveyor belt; the rotary drive motor 506 is electrically connected to a second PLC controller.
In another embodiment, when the driving wheel 507 and the driven wheel 508 both adopt gears, the driving wheel 507 and the driven wheel 508 are meshed, and the diameter of the driven wheel 508 is larger than that of the driving wheel 507.
Specifically, the rotating support is specifically a bearing 505, two of the bearings 505 are mounted on the rotating bracket 509, and the bearings 505 are matched with the outer diameters of two ends of the nip roller box 502. In addition, the rotating support members may also adopt support rollers, each two support rollers are in a group, and three groups of support rollers are arranged in total and are respectively arranged in the front, middle and rear of the bottom of the rolling head case 502, so as to support the rolling head case 502 during the rotating operation.
The working process of the invention is as follows:
seamless tube rolling is carried out by utilizing an upper rotary rolling head type seamless tube production line, and comprises the following steps,
firstly, feeding a blank, positioning and installing a coiled blank reel 1 in front of the straightening machine 3, and meanwhile, placing an empty finished reel 8 at the tail part of a production line; the centers of the blank scroll 1 and the finished product scroll 8 are provided with driving motors, and the driving motors drive the central shafts of the scrolls to rotate so as to realize the discharging and receiving operation of seamless tubes;
secondly, rolling the seamless tube, namely opening one end of the blank, passing through the straightener 3, extending into the seamless tube rolling mill 5, starting the seamless tube rolling mill 5 to perform rolling operation under the control of two PLC controllers, enabling the rolled finished product to pass through the supporting roll 6 and reach the finished product reel 8, and coiling the finished seamless tube along with the rolling after the finished product reel 8 is positioned; in the production process, the unwinding speed controller 2 at the rear of the blank reel 1 is pressed and lapped above the blank to monitor the unwinding speed in real time, and the winding speed controller 7 at the front of the finished product reel 8 is pressed and lapped above a finished seamless tube to monitor the winding speed in real time;
and finally, transferring finished products, and after rolling is finished, winding all finished seamless tubes to a finished product reel 8 to form a new round of rolled blank, and if the finished products exist, directly transferring the finished products to a finished product area through a forklift or a shop crown block.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (8)
1. The utility model provides a rotary rolling head formula seamless pipe production line which characterized in that: the seamless tube rolling mill comprises a blank scroll, a straightening machine, a seamless tube rolling mill and a finished product scroll, wherein the blank scroll, the straightening machine, the seamless tube rolling mill and the finished product scroll are sequentially arranged on a straight line, a blank for rolling a seamless tube is wound on the blank scroll, the end head of the blank extends forwards through the straightening machine and extends into the seamless tube rolling mill, a mandrel of the seamless tube rolling mill is embedded into a central hole of the blank, and a rolled finished product continues to extend forwards and is wound on the finished product scroll after being rolled by the seamless tube rolling mill; the blank reel, the straightening machine and the finished product reel are all electrically connected with the first PLC, and the seamless pipe rolling mill is all electrically connected with the second PLC.
2. The rotary block seamless tube production line according to claim 1, characterized in that: an unwinding speed controller is arranged between the blank reel and the straightening machine, a winding speed controller is arranged between the seamless tube rolling mill and the finished product reel, and the unwinding speed controller and the winding speed controller are both electrically connected with the first PLC.
3. The rotary block seamless tube production line according to claim 2, characterized in that: at least one group of supporting rollers are arranged between the seamless tube rolling mill and the winding speed controller, and when the distance between the seamless tube rolling mill and the winding speed controller is increased, the number of the supporting rollers is increased according to the requirement.
4. The rotary block seamless tube production line according to claim 3, characterized in that: and the front end of the seamless tube rolling mill is provided with a mandrel detector.
5. The rotary block seamless tube production line according to claim 4, characterized in that: the seamless tube rolling mill adopts a rotary rolling head type structure and comprises a base, a rolling head case, a rotating shaft and a rotary driving device, wherein the rolling head case is rotatably connected to the base through a rotary supporting piece, the rotary supporting piece is installed on a rotary support, one end of the rolling head case is connected with the hollow rotating shaft, and the rotating shaft is connected with the rotary driving device and driven to rotate through the rotary driving device; and an outer shell is arranged around the base.
6. The rotary block seamless tube production line according to claim 5, characterized in that: the rotary driving device comprises a rotary driving motor, a driving wheel and a driven wheel, the rotary driving motor is installed inside or on one side of the base, the driving wheel is installed on an output shaft of the rotary driving motor, the driven wheel is installed on the rotating shaft, and the driving wheel and the driven wheel are connected together through a conveying belt.
7. The rotary block seamless tube production line according to claim 5, characterized in that: when the driving wheel and the driven wheel both adopt gears, the driving wheel and the driven wheel are meshed and connected, and the diameter of the driven wheel is larger than that of the driving wheel.
8. The rotary block seamless tube production line according to claim 4, characterized in that: the rotary support member specifically adopts bearings, the two bearings are arranged on the rotary support, and the bearings are matched with the outer diameters of the two ends of the rolling head case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210021918.9A CN114289542A (en) | 2022-01-10 | 2022-01-10 | Rotary rolling head type seamless pipe production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210021918.9A CN114289542A (en) | 2022-01-10 | 2022-01-10 | Rotary rolling head type seamless pipe production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114289542A true CN114289542A (en) | 2022-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210021918.9A Pending CN114289542A (en) | 2022-01-10 | 2022-01-10 | Rotary rolling head type seamless pipe production line |
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| Country | Link |
|---|---|
| CN (1) | CN114289542A (en) |
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- 2022-01-10 CN CN202210021918.9A patent/CN114289542A/en active Pending
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