CN114406006B - Seamless steel pipe tracking production system one by one - Google Patents
Seamless steel pipe tracking production system one by one Download PDFInfo
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- CN114406006B CN114406006B CN202210336075.1A CN202210336075A CN114406006B CN 114406006 B CN114406006 B CN 114406006B CN 202210336075 A CN202210336075 A CN 202210336075A CN 114406006 B CN114406006 B CN 114406006B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/78—Control of tube rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention provides a seamless steel tube tracking production system one by one, which comprises: the tube blank area production control unit is used for performing branch-by-branch tracking production control on the seamless steel tube blank entering the tube blank area by utilizing the identifier on the tube blank; the hot rolling area production control unit is used for performing branch-by-branch tracking production control on the fixed-size billets entering the hot rolling area and is provided with a roller reduction control device which calculates and adjusts a roller reduction adjustment value of the rolling mill; the tube array sawing area production control unit is used for carrying out tracking production control on the plurality of sub-tubes cut in the tube array sawing area one by one; and the finishing area production control unit is used for detecting and finishing the seamless steel pipe entering the finishing area and is provided with a pipe inner surface detection device. The invention can track the steel pipes one by one in the production process, simultaneously realize the adjustment of the compression roller and the automatic detection of the inner surface of the pipe in the production process of the steel pipes, and ensure the timeliness, the accuracy and the integrity of the tracking of the material one by one and the production.
Description
Technical Field
The invention relates to a steel pipe production control system, in particular to a seamless steel pipe tracking production system one by one.
Background
The processing technology of the seamless steel tube is complex, and at least relates to relevant equipment such as long-scale blank sawing, annular furnace, perforating machine, rolling mill, sizing mill, cooling bed, tube row sawing, straightening machine, dust blowing and sucking, flaw detector, length measuring weighing machine, packing machine and the like, wherein generally, each equipment is provided by different manufacturers, each equipment is provided with independent PLC control work, the PLC of each equipment is connected with MES (production execution system), the MES is used for carrying out flow control among the equipment, and obtaining relevant production information and the like is implemented. The material moving path is changeable when one long billet passes through each device for processing, and relates to a technological process that one long billet is changed into a plurality of fixed billets, and after the fixed billets are rolled into steel pipes, the steel pipes are sawed into a plurality of steel pipes.
At present, the tracking condition of the steel pipes one by one is that the end part of each long billet is written or jet-printed with a furnace platform number, a furnace sequence number, a billet flow number and a material, but the steel pipe production still adopts the furnace organization production. Although the automation degree of the rolling process is high, the single-line conveying is performed from the long-sized blank entering the annular furnace to the lower cooling bed, the subsequent production process has more off-line processes, the marks are easy to wear, and the multiple stations of the production process are frequently subjected to on-line and off-line processes, so that the whole process is difficult to realize branch-by-branch tracking.
At present, the quality requirements of customers are higher and higher, the requirements of the customers cannot be met by tracking according to batches, and the customers require that seamless steel pipes can trace production information one by one. And after the performance of the steel pipe product has a problem, the steel pipe product cannot be accurately traced to which one of the corresponding furnace numbers is unfavorable for reason analysis and continuous improvement, material branch-by-branch tracing is the basis for realizing branch-by-branch quality tracing and production refined management and control of the steel pipe, the traditional production mode cannot meet the requirement of high-end users on the full-flow tracing of the production information of the single steel pipe, and the full-flow traceability cannot be achieved.
In addition, in the process of detecting the inner surface of the pipe, the existing inner surface detection is carried out based on a human eye inspection mode, the depth of a single end of the pipe needs to be detected by about 6m, the detected defect types comprise cracks, hairlines, inner folds, outer folds, pricks, straight channel inner folds, straight channels, separation layers, scabs, pits, shriveling, pocking marks, bulges, corrected recesses, scratches, internal spirals, blue lines, burrs and the like, the defect precision of the naked eye detection is +/-0.3 mm, in the online production process of the pipe, an operator holds a flashlight by hand to irradiate the inside of the pipe and check the defect information possibly appearing in the pipe when passing through a manual inspection bench, the depth capable of being detected is limited due to the visual field limitation of human eyes, the farthest detection depth is checked by 500mm, and the defect smaller than or equal to 0.5mm and 0.5mm is difficult to see basically; in addition, human eyes check defects, the technical requirements, proficiency and defect type judgment of detection personnel have high requirements, pipe production enterprises generally adopt 24H uninterrupted production and are divided into two production shifts and one shift of 12H working time, even if skilled operators use eyes for a long time, visual fatigue can occur, and false detection and missing detection are easy to occur during product detection.
Under the background that the industrial automation degree is continuously improved, the press roller adjustment and the automatic detection of the inner surface of the pipe in the steel pipe production process are realized while the steel pipe in the production process is tracked one by adopting the mark on the steel pipe.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a seamless steel pipe branch-by-branch tracking production system, which can track steel pipes in the production process branch-by-branch by using marks on the steel pipes, and simultaneously realize the adjustment of compression rollers and the detection of the inner surface of a pipe in the production process of the steel pipes, thereby ensuring the timeliness, the accuracy and the integrity of the material branch-by-branch tracking.
The invention provides a seamless steel tube tracking production system one by one, which comprises: the tube blank area production control unit is used for performing branch-by-branch tracking production control on the seamless steel tube blank entering the tube blank area by using the mark on the tube blank; a hot rolling area production control unit for performing branch-by-branch tracing production control on the fixed-size billet entering the hot rolling area, wherein a roll reduction control device is provided, the roll reduction control device calculates and adjusts a roll reduction adjustment value of the rolling mill according to the following formula (1),
the tube array sawing area production control unit is used for carrying out tracking production control on the plurality of sub-tubes cut in the tube array sawing area one by one; and a finishing area production control unit that detects and finishes the seamless steel pipe entering the finishing area, and is provided with a pipe inner surface detection device that includes: a base; the detection rod driving mechanism is arranged on the base and used for driving at least two detection rods to move in the pipe along the axial direction; the mobile camera shooting mechanism comprises a connecting rod mechanism and a plurality of sets of parallelogram mechanisms formed around the connecting column, a camera connected with the display analysis equipment is arranged at the front end of the connecting column, and any parallelogram mechanism comprises the connecting column, strip-shaped plate springs and connecting rods, wherein the two ends of the connecting column are rotatably connected with each other, and the connecting rods are rotatably connected among the strip-shaped plate springs; the connecting rod mechanism comprises a guide rod, a connecting sliding shaft and an elastic element, the guide rod is coaxially connected to the rear end of the connecting column, the connecting sliding shaft is coaxially sleeved on the guide rod, and the elastic element is sleeved on the guide rod between the connecting sliding shaft and the rear end of the guide rod; the front end of connecting the sliding shaft still is provided with many spinal branchs vaulting pole, the rotatable front end of connecting the sliding shaft of installing in one end of bracing piece, the other end is installed on the bar leaf spring.
In addition, preferably, the pipe gang saw area production control unit further comprises a steel pipe cutting control device for controlling the cutting length of the head and the tail of the pipe, and the steel pipe cutting control device calculates the steel pipe head and tail cutting length L according to the following formula (2)q：
Wherein the content of the first and second substances,
the pass coefficient is in the range of 0.65-0.75;
Snis the number of participating rolling stands, and SnGreater than 3;
Zmis the average tension coefficient of the parent tube;
y is a tension superposition coefficient, and the value range is as follows: 0.65 to 0.67;
Dzis the distance between adjacent racks;
alpha is the coefficient of thermal expansion of the mother tube and takes the value
；
Δ X is the varying temperature from the sizer outlet to the tube row saw area.
In addition, preferably, the detecting rod driving mechanism further comprises a pair of fixed vertical plates which are arranged in parallel, two sets of symmetrical rolling assemblies are arranged on the inward facing surfaces of the fixed vertical plates, each set of rolling assemblies comprises at least one driving roller, and the plurality of driven rollers and the driving rollers are matched to clamp the detecting rod, so that the driving rollers drive the clamped detecting rod to move.
Further, it is preferable that the tube inner surface detection device further includes a pitch adjustment mechanism including: the left and right rotary trapezoidal screws are arranged between the fixed vertical plates, the two ends of the left and right rotary trapezoidal screws are respectively in threaded connection with the corresponding fixed vertical plates, and the left and right adjusting servo motors drive the left and right rotary trapezoidal screws to rotate so as to drive the fixed vertical plates to move in opposite directions or in the opposite directions.
Preferably, the pipe inner surface detection apparatus further includes a probe rod retracting and releasing mechanism including a probe rod winding/rotating disk around which the probe rod is wound.
In addition, preferably, the two ends of the connecting rod are respectively connected with a roller which is used for contacting with the inner surface of the pipe.
According to the structure, the seamless steel pipe branch-by-branch tracking production system can track the steel pipe branch-by-branch in the production process by using the identification on the steel pipe, meanwhile, the compression roller adjustment and the pipe inner surface detection in the steel pipe production process are realized, and the timeliness, the accuracy and the integrity of material branch-by-branch tracking are ensured.
Drawings
The above features and technical advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments thereof taken in conjunction with the accompanying drawings.
FIG. 1 is a schematic view showing the structure of a seamless steel pipe branch-by-branch tracking production system according to the present invention.
FIG. 2 is a block diagram showing the structure of a seamless steel pipe branch-by-branch tracking production system according to the present invention.
FIG. 3 is a flow chart showing a process for producing a seamless steel pipe in a pipe blank zone according to the present invention.
FIG. 4 is a flow chart showing a process for producing a seamless steel pipe in a pipe blank zone according to the present invention.
Fig. 5 is a schematic perspective view showing a specific structure of the pipe inner surface detection device according to the present invention.
Fig. 6 is another perspective view showing a specific structure of the pipe inner surface detection device according to the present invention.
Fig. 7 is a schematic perspective view showing a probe rod driving mechanism of the pipe inner surface detection apparatus according to the present invention.
Fig. 8 is a schematic perspective view showing a specific structure of a probe rod in the pipe inner surface detection apparatus according to the present invention.
Fig. 9 is another perspective view showing a specific structure of a probe rod in the pipe inner surface detection apparatus according to the present invention.
Detailed Description
The embodiments of the present invention will be described below with reference to the accompanying drawings. Those of ordinary skill in the art will recognize that the described embodiments can be modified in various different ways, or combinations thereof, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in the present description, the drawings are not to scale and like reference numerals refer to like parts.
As shown in fig. 1, the seamless steel pipe branch-by-branch tracking production system according to the present invention includes production devices such as a pipe blank sawing machine, a ring furnace, a piercing mill, a rolling mill, a sizing mill, a cooling bed, a pipe row sawing machine, a straightening machine, an inner surface detection device, a dust blowing and sucking device, a flaw detector, a length measuring and weighing device, and PLCs connected to the production devices, wherein the PLCs of the production devices are respectively connected to corresponding devices to control the actions of the corresponding devices, the PLCs of the production devices are further connected to a production process execution system through an ethernet, the production process execution system controls the operations of the PLCs according to a steel pipe production process flow, and the PLCs control the actions of the corresponding devices.
The automatic production line comprises a tracking production server, a switch, a detection element, a fixed-size blank identification robot, a cooling bed identification robot, a post-saw identification robot, a mark supplementing robot, a listing robot, a long-size blank code reading module, a fixed-size blank code reading module, a license plate code reading module, a gang saw inlet code reading module, an off-line code reading module before straightening and a finishing code reading module. The PLC of each production facility is connected to the corresponding facility, such as a position switch, an instrument, a frequency converter, etc., for controlling the corresponding facility, and the PLC of each production facility is connected to the MES, which is a system for controlling each production facility of the entire seamless steel pipe, through the industrial ethernet, and a description thereof is omitted. The PLC, the detection element, the robots and the code reading modules of each production device are all connected with the tracking production server one by one through the switchboard. Each detection element is used for detecting whether a material enters a station or not, the code reading module is used for reading the identification on the material, and the robot performs corresponding action according to the identification read by the code reading module. Thickness gauges, surface detection equipment and other equipment can be included, and are also connected with the MES through the industrial Ethernet.
The PLC of each production device comprises a pipe blank area PLC, an annular furnace area PLC, a puncher area PLC, a rolling mill area PLC, a sizing mill area PLC, a cooling bed area PLC, a pipe row sawing area PLC, a straightener area PLC, an ash blowing and sucking area PLC, a flaw detector area PLC and a length measuring and weighing area PLC.
The annular furnace zone PLC, the puncher zone PLC, the rolling mill zone PLC, the sizing mill zone PLC and the cooling bed zone PLC belong to hot rolling zone process equipment, and as shown by a dotted line frame in figure 1, the temperature of a blank in the zone is high, and the blank cannot be identified in a code pasting mode. A straightener area PLC, a blowing and suction area PLC, a flaw detector area PLC and a length measuring and weighing area PLC belong to finishing area process equipment, and as shown by a thin solid line frame in figure 1, blanks can be marked in the area through a code pasting or code spraying mode.
A plurality of logic stations are arranged in the tracking production server one by one, the logic stations correspond to actual physical stations of a production field, each logic station is provided with a section of storage space in a system, and the logic stations can be imagined as virtual stations with the same form as the actual physical stations. The tracking production server can adopt a visual interface, and can display the logic stations on the interface so as to visually watch the real-time position of the material (namely the pipe) on the interface. The tracking production server can store important information of the whole process of the materials, each material can have an independent space for storing the information, and the stored information comprises material identification, logic stations and time passed by the material, relevant important production parameters of the material in each process and the like.
The state change condition of the steel pipe blank in the production process is as follows:
(1) a long ruler blank, an original round bar blank;
(2) the fixed-length blank is formed by sawing the long-length blank;
(3) a blank pipe is a pipe material formed after a through hole is machined in a fixed size blank through a punching machine;
(4) the pierced billet comes out of the outlet of the rolling mill and is called a pierced billet;
(5) seamless steel pipe, pipe material after the outlet of sizing mill.
FIG. 2 is a block diagram showing the structure of a seamless steel tube branch-by-branch tracking production system according to an embodiment of the present invention, and FIG. 3 is a flowchart showing a seamless steel tube production process of a tube blank zone according to an embodiment of the present invention; FIG. 4 is a flow chart showing a process for producing a seamless steel pipe in a hot rolling zone according to an example of the present invention. Next, a production process of the seamless steel pipe branch-by-branch tracking production control system will be described with reference to fig. 2, 3, and 4.
The seamless steel pipe branch-by-branch tracking production system comprises a pipe blank area production control unit 101, a hot rolling area production control unit 102, a pipe row saw area production control unit 103 and a finishing area production control unit 104.
The tube blank area production control unit 101 performs branch-by-branch tracking production control on the seamless steel tube blank entering the tube blank area. In the tube blank area, a continuously cast cold long blank is taken as an example, the mark is ABCD1234 which is arranged on the end surface of the blank during continuous casting, and when the cold long blank is conveyed to a feeding rack in front of a sawing machine, the long blank code reading module reads the mark on the end surface of the blank. The long-length blank code reading module is that the branch-by-branch tracking production server obtains the identifier ABCD1234 of the blank for the first time, and sends a request to an MES system (production process execution system) according to the identifier, and the MES system sends the original blank information (such as the external dimension, the alloy parameter, the steel grade, the process parameter, and the like) of the identifier to the branch-by-branch tracking production server, and stores the original blank information corresponding to the identifier, and all the information about the blank can be viewed through the identifier in the branch-by-branch tracking production server. And the long ruler blank code reading module adopts an OCR visual recognition technology to recognize the product information pasted on the end surface of the long ruler blank. And preferably, a machine vision combined deep learning mode is adopted, so that damaged and missing characters can be identified. Preferably, the two ends of the long ruler blank are respectively provided with a long ruler blank code reading module so as to ensure that the relevant information of the long ruler blank is obtained.
The tube blank area PLC is connected with the MES system, and can monitor the action of the sawing machine, and after the cold long size blank enters the sawing machine, the sawing machine saw cuts the cold long size blank according to the length requirement of the fixed size blank. For example, the length of the cold long billet is 12m, if the length of the fixed billet is 3m, the cold long billet needs to be cut into 4 sections, the tube blank area PLC monitors the actions of the sawing machine, such as clamping the cold long billet, descending the saw blade to start sawing, ascending the saw blade and loosening the fixed billet formed by sawing. The logical judgment of the completion of a sawing action process is carried out in a tube blank area PLC, when a sawing action is completed, a fixed-size blank is generated, the tube blank area PLC sends a signal of the completion of sawing to a branch-by-branch tracking production server, the branch-by-branch tracking production server generates a new mark such as ABCD1234-1 on the basis of the mark ABCD1234 of the original cold long blank, the new mark corresponds to the fixed-size blank and is stored in a logic station after sawing, and meanwhile, original blank information such as alloy, steel type, process parameters and the like is stored in the mark, so that the fixed-size blank which is newly sawn has a mark corresponding to the mark in the branch-by-branch tracking production server.
Although the mark corresponding to the fixed size blank is formed in the logic station, the mark is not formed on the surface of the fixed size blank, the mark can be formed by a fixed size blank marking robot after the sawing process, the fixed size blank marking robot is connected with a branch-by-branch tracing production server, when the fixed size blank is conveyed to the fixed size blank marking robot station, the branch-by-branch tracing production server sends a newly generated mark ABCD1234-1 to the given size blank marking robot, and the fixed size blank marking robot makes the mark into a label to be attached to the end part of the blank, so that the fixed size blank has the mark corresponding to the mark. Because the outer diameter, the length, the concave-convex end surface and the like of the sizing blank are uncertain, the sizing blank marking robot can adopt a visual optimization means, meet the requirements of complex working conditions on site and improve the self-adaptability of equipment. Preferably, the fixed size blank identification robots are arranged at both ends of the fixed size blank, and the identifications are pasted at both ends, so that the subsequent process identification is facilitated.
To this end, each billet from the cold elongated billet to the forming of the fixed billet in the billet zone has a unique tracking identifier. In the above, one sawing machine is taken as an example, and a plurality of sawing machines each having a sizing bar marking robot corresponding thereto may be provided in parallel. The identification can be transmitted to the next logic station at one logic station of the branch-by-branch tracking production server, and a signal for triggering transmission comes from the logic judgment of the tube blank area PLC, such as the action process of a material shifting hook, the rotation process of a roller way and the like. The sawing of one segment is taken as an example for illustration, the rest three segments are coded and labeled according to the first segment, so that the marks of 4 sizing blanks, ABCD1234-1, ABCD1234-2, ABCD1234-3 and ABCD1234-4, cut by the cold long blank sawing are formed, and the original blank information of the long blank is stored behind each sizing blank mark.
The fixed size blanks can enter the annular furnace or enter the fixed size blank storage from a lower line, and fixed size blank code reading modules are respectively arranged at the upper line and the lower line of the fixed size blanks and used for tracking the information of all the fixed size blanks.
The hot rolling zone production control unit 102 performs branch-by-branch follow-up production control of the fixed-length billet in the hot rolling zone. The first cooling bed and the second cooling bed of the annular furnace, the puncher, the rolling mill zone, the sizing mill and the cooling bed zone are hot rolling zones, the temperature is high, labeling and other ways cannot be adopted for identifying and tracking blanks, but the blanks in the section of the process flow in a single line and one direction, namely, the situation that a plurality of paths are changed does not exist, the blanks are in first-out, so that the marks can be tracked by monitoring the change of physical stations based on the PLC, the judgment on the change of the physical stations is that the PLC judges the change of the physical stations according to the change of field detection elements or transmission loads and the like, the logic judgment forms of all the stations are different, after the PLC judges the switching of the physical stations, the PLC sends a signal to the branch-by-branch tracking production server to tell the branch-by-branch tracking production server that the physical stations of the blanks change, and the logic stations of the branch-by-branch tracking production server also change correspondingly, thereby tracking the physical station of the blank all the time so that the identification of the blank can correspond to it. It should be noted that, due to the difference in the structures of the devices with different specifications, the determination of the physical workstation recited in this embodiment is only exemplary, and is not used to limit the method for the PLC to determine the physical workstation, and the method for the PLC to determine the change of the physical workstation is correspondingly set according to the difference in the structures of the different devices.
The fixed-size blank reading module is used for identifying identification information of the end face of a fixed-size blank entering a furnace of the annular furnace by adopting an industrial code reader identification technology before the fixed-size blank enters the heating furnace, the fixed-size blank reading module sends the identification to the branch-by-branch tracking production server after reading the identification, when a furnace charging action is completed, the branch-by-branch tracking production server sends the read identification (such as ABCD1234-3, which is described by taking the identification as an example hereinafter) to the annular furnace area PLC, the annular furnace is annular, the fixed-size blank can be heated to about 1200 ℃, and the annular furnace is generally composed of a rotatable furnace bottom, a fixed furnace top, an inner furnace wall and an outer furnace wall. The annular furnace makes the blank placed on the bottom of the furnace move from the charging opening to the discharging opening along the annular tunnel by means of the rotation of the bottom of the furnace, and continuously heats the blank in sections in the moving process. The annular furnace is provided with an encoder for tracking the rotating position of the furnace bottom of the annular furnace, the PLC in the annular furnace area can determine the position of the fixed size blank rotating to the annular furnace according to the reading of the encoder, the position of the fixed size blank determined by the PLC in the annular furnace area corresponds to a logic station, the position information is fed back to the branch-by-branch tracking production server, and the branch-by-branch tracking production server stores the identification of the fixed size blank to the logic station corresponding to the annular furnace. For example, the ring furnace can be used for placing 10 fixed size blanks, placing one fixed size blank at a time from the charging opening, rotating a certain angle, and removing one fixed size blank from the discharging opening. Although the labeling can not be identified any more due to the influence of high temperature and deformation in the annular furnace, the labeling can be used as a physical station by corresponding to a certain angle of rotation of the annular furnace, a logical station is arranged in each tracking production server one by one corresponding to each physical station, and each sizing blank entering the annular furnace can be in one-to-one correspondence with the physical station through the logical station, so that the identification of the sizing blank is kept to be corresponding to the sizing blank.
After the fixed size blank is heated, the fixed size blank is transferred to a steel tapping machine, and the action process of the steel tapping machine is as follows: the steel tapping machine advances, descends, clamps steel, ascends, retreats and loosens, so that the fixed size blank reaches the position of the material poking hook of the chain bed. The PLC in the annular furnace area sends a completion signal to the branch-by-branch tracking production server, the branch-by-branch tracking production server transmits the identification ABCD1234-3 to a logic station of the chain bed material shifting hook, the chain bed material shifting hook shifts the fixed size blank, the fixed size blank is moved to the chain bed, and the fixed size blank can be transmitted to the puncher area through the chain bed. Specifically, the ABCD1234-3 coming out of the annular furnace is turned over to a chain bed by the material shifting hook, the hydraulic cylinder drives the material shifting hook to act, the proximity switch detects the position of the material shifting hook, the judgment on the action process of the material shifting hook is that the material shifting hook detects that a blank exists in the material shifting hook, the material shifting hook acts, the material shifting hook is lifted, the lower position of the proximity switch disappears, the upper position of the proximity switch disappears, then the upper position disappears, the lower position of the proximity switch disappears, and one material shifting action is completed. The PLC finally sends a completion signal to the branch-by-branch tracking production server by judging the action process of the proximity switch and a signal of thermal detection (a high-temperature metal detector, namely a detection element suitable for a high-temperature environment), the branch-by-branch tracking production server transmits the ABCD1234-3 to the next logic station, namely a chain bed, and the PLC also makes corresponding changes.
By analogy, the marks are sequentially transmitted one by one at the logic stations, the logic stations in the perforating machine area also comprise a perforating machine front roller way, a blank pushing machine, a perforating machine body, a perforating machine outlet roller way and a borax spraying position, if the judgment of the mark ABCD1234-3 at the logical station of the puncher body is that the puncher area PLC judges that the position of the puncher body is provided with no blank according to the position of the blank pushing machine (by means of encoder feedback associated with position information) and a heat detection signal, further, the steel biting signal of the puncher can be combined, the steel biting signal is judged by judging the current fed back by transmission, the information is synthesized to send a signal to the tracking production server one by one, the puncher bites steel, and the sizing blank is definitely at the logical station of the puncher body, the branch-by-branch tracking production server then passes the ABCD1234-3 to the logical station of the perforator body.
The fixed size blank of the puncher area is about 1000 ℃, the fixed size blank passing through the puncher area is changed into a capillary with a through hole, the capillary is moved to the rolling mill area through the capillary transverse moving vehicle, the capillary transverse moving vehicle is driven by a motor, the position is fed back through an encoder, the puncher area PLC judges that the capillary is at a spraying sand position through a thermal detection signal, a sand spraying system sends a completion signal to the puncher area PLC, and in addition, a material poking hook action is performed, the material poking action is basically similar to the previous material poking hook action, so that the tracking production server one by one judges that the capillary is on the capillary transverse moving vehicle, and the tracking production server one by one can transmit the ABCD1234-3 to a logic station of the capillary transverse moving vehicle. The capillary transverse moving vehicle is used for transferring the capillary to a front stage of the rolling mill, and the logic stations in the rolling mill area comprise the following steps: a capillary tube transverse moving vehicle, a capillary tube feeding revolving arm, a rolling mill inlet, a rolling mill body and a rolling mill outlet roller way. The mandrel is penetrated into the hollow billet by the limiting trolley and then enters the rolling mill for rolling, the pipe is taken off by the pipe removing machine, the mandrel returns, and the hollow billet is called from the outlet of the rolling mill.
The pierced billet moves to a sizing mill through a roller way, and the sizing mill further performs sizing rolling on the steel pipe rolled by the rolling mill to obtain the external dimension with higher precision. The temperature of the rolling mill zone and the sizing mill zone is about 1000 ℃, and the sizing zone also adopts a form that a logic station corresponds to a physical station to transmit the identification. And the inlet and the outlet of the sizing area are provided with hot tests to assist the tracking of the logic station.
After the above processing of the hot rolling area, the blank marked as ABCD1234-3 becomes a seamless steel tube, the mark of which is still unchanged, and the process information of each process is stored corresponding to the mark.
The cooling bed is of a walking beam type rack structure and is used for transportation and rotary cooling of the seamless steel pipe. Each stepping position of the rack of the cooling bed corresponds to one logic station in the system, the PLC of the cooling bed area can determine the position of the seamless steel tube on the cooling bed according to the stepping distance of the rack, the position of the seamless steel tube determined by the PLC of the cooling bed area corresponds to one logic station, the position information is fed back to the branch-by-branch tracking production server, and the branch-by-branch tracking production server stores the identification of the seamless steel tube to the logic station corresponding to the cooling bed.
In addition, the production control unit 102 further includes a roll reduction amount control device 201 in the hot rolling zone. When a pipe is rolled, the temperatures of rollers corresponding to different pipes are different, particularly after the rollers are replaced by the rolling mill, the whole system of the rolling mill is in a normal-temperature state, the temperature of the rolling mill rises when the rolling mill reaches a working state, parameters of mechanical equipment change correspondingly, particularly the rollers, so that the wall thickness of the pipe in the period from the normal-temperature state to the good working state of the rolling mill is difficult to control, generally, the process needs to roll a plurality of steel pipes, such as about 3 steel pipes, after the 3 steel pipes are rolled, the pipe is sampled, then, according to a sampling result, a shunting is performed, and then, continuous rolling is performed, and the 3 steel pipes are scrapped under normal conditions. However, the invention can make the steel pipes correspond to each other by marking one by one due to the branch-by-branch tracking control production, thereby clearly obtaining various production related data in the production process of each steel pipe.
The roll reduction control device 201 calculates the roll reduction adjustment value of the rolling mill according to the following formula (1), and then adjusts the roll reduction according to the roll reduction adjustment value, so that the rejection rate of the three tubes can be effectively reduced.
t: the temperature of the roller is controlled by the temperature of the roller,
is the temperature of a roller before rolling the (n-1) th steel pipe,
is the temperature of the roller before the rolling of the nth steel pipe,
t: the wall thickness of the pipe is as follows,
the actual wall thickness is such that,
the given value of wall thickness, in mm;
k: the characteristic coefficient of the roller shape of the roller corresponds to different values of different series of rollers, and the value range is 0.5-1.
The rolling reduction of the roller during rolling of the first steel pipe is obtained according to data counted by the branch-by-branch tracking control system, specifically, because the system can identify each steel pipe one by one, the related production information of the steel pipes which are rolled in sequence can be distinguished, and the information of the steel pipes is not identified according to the batch of one furnace, so that the rolling reduction of the roller can be calculated according to the related production information of the steel pipes at the front and the rear by adopting a formula (1). Thereby effectively reducing the rejection rate of the three tubes. And the complicated steps of sampling the pipe, shunting according to the sampling result and then continuously rolling are also reduced. The rolling reductions of the rolls of the second and third steel pipes are also calculated by the same formula (1), and the temperature of the rolls after the third steel pipe is rolled is substantially stable, and the roll temperatures during the rolling of the preceding and following steel pipes have substantially no effect on the rolling reduction adjustment value. In addition, whether the calculation is wrong can also be judged by comparing the rolling history data with better rolling history data under the same roll system.
Then, the tube gang saw area production control unit 103 performs branch-by-branch follow-up production control on the plurality of sub tubes cut in the tube gang saw area.
The seamless steel pipe sequentially passes through a first cooling bed, a second cooling bed and a third cooling bed to be cooled, the temperature of the seamless steel pipe is between normal temperature and 600 ℃ when the seamless steel pipe reaches the inlet of the third cooling bed, a cooling bed identification robot is arranged at the inlet of the third cooling bed, when the pipe ABCD1234-3 moves to the inlet of the third cooling bed, the identification ABCD1234-3 is sent to the cooling bed identification robot by the tracking production server one by one, and the cooling bed identification robot sprays bar codes on the identification along the circumferential direction of the main pipe. The seamless steel pipe moves towards the tube bank sawing machine, a bar saw inlet code reading module is designed before the saw, when the seamless steel pipe is conveyed to a tube bank sawing machine station, the bar saw inlet code reading module reads information of a bar code on the surface of the pipe, and the ABCD1234-3 identifier is conveyed to a logic station of a tube bank sawing machine body.
The cold bed identification robot adopts a bar code to identify the seamless steel tube, and the bar code corresponds to the identification. The cooling bed identification robot can be provided with 3 sets of cloth covering a single-row cloth mode of inlet alignment, middle alignment and outlet alignment of a third cooling bed and a double-row cloth mode of inlet alignment and outlet alignment. The printing ink for spraying the bar codes is divided into two types, one type is suitable for the temperature range of 150-600 ℃, and the other type is suitable for the temperature range of 0-150 ℃. The spray gun is divided into 2 ink paths which are respectively suitable for spraying of normal-temperature ink and high-temperature ink.
In addition, the tube gang saw area production control unit 103 further includes a steel tube cutting control device 202.
The length L of the head and the tail of the steel pipe is cut offqThe invention relates to a seamless steel tube one-by-one tracking production system, which is characterized in that the number of racks which participate in rolling by a sizing mill is determined according to a reducing ratio, the average tension coefficient of a mother tube is determined according to the size of the mother tube, so that the size of the head and tail cutting length in a hot state is calculated, the head and tail cutting length in a cold state is calculated according to the thermal expansion coefficient of the steel tube, and the optimized head and tail cutting length of the steel tube is obtained.
The pipes can be identified and corresponded one by one due to tracking production one by one, so that the optimized control is realized through process adjustment
By controlling the number S of participating rolling standsnTo optimize the length L of the head and the tailqIn the process, the adjusted process parameters can be correspondingly consistent with the pipes tracked one by one. Here, the steel pipe cutting control device 202 calculates the length L of the cut end and the cut end of the steel pipe according to the following formula (2)q。
Wherein the content of the first and second substances,
the pass coefficient is in the range of 0.65-0.75;
Snis the number of participating rolling stands, and SnMore than 3, because the last three frames are the frames for controlling the roundness of the steel pipe, the length deformation is not involved;
Zmis the average tension coefficient of the parent tube;
y is a tension superposition coefficient, and the value range is as follows: 0.65 to 0.67;
Dzis the distance between adjacent racks;
alpha is the coefficient of thermal expansion of the mother tube and takes the value
；
Δ X is the varying temperature from the sizer outlet to the tube row saw area.
Wherein the content of the first and second substances,
and calculating the size of the head and tail cutting length in a hot state.
Through accurate tracking of the branch-by-branch tracking system, after the main pipe enters the pipe gang sawing area, optimized data of the branch-by-branch tracking system are received, and optimized sawing of the length of the head and tail length data of each main pipe is achieved.
A seamless steel pipe (main pipe) is possibly cut into a plurality of sections (sub pipes), if the seamless steel pipe (main pipe) is cut into 3 sections of fixed-length pipes, according to the complete action of the cutting, a cutting completion signal is sent to a branch-by-branch tracking production server by the PLC, the branch-by-branch tracking production server automatically generates a new mark on the basis of the ABCD1234-3-3, such as the ABCD1234-3-1, and 3 new marks are generated by analogy, the ABCD1234-3-1, the ABCD1234-3-2 and the ABCD1234-3-3, the process information of the main pipe is transmitted to the sub pipes for storage, the seamless steel pipe moves from an outlet of a pipe gang cutting machine to a blanking revolving arm and then to an inlet of a chain machine, a post-cutting marking robot is arranged at the inlet of the chain machine, when the seamless steel pipe is conveyed to the inlet of the chain machine, the branch-by-branch tracking production server sequentially sends the 3 newly generated marks to the post-cutting marking robot, the mark is manufactured into a label form by the mark robot after sawing and is sequentially pasted on the inner surface of the seamless steel tube, so that the mark is not damaged by friction with equipment in the moving process of the seamless steel tube, the situation that the number of the seamless steel tube is increased can not happen, the blank marks the ABCD1234 from the beginning, 12 new marks are changed into, such as the ABCD1234-3-1 and the like, and the mark is pasted on the seamless steel tube. The post-sawing marking robot adopts a high-speed code scanner, and can read the marking information of the inner wall of the end part of the steel pipe in real time at the linear speed of 2.5 m/s. And preferably, in order to reduce the breakage rate of the mark, two marks are stuck on the inner wall of the steel pipe, and the mark is chamfered so as to reduce the probability of scratching.
The branch-by-branch tracking control system can track the identification of each main pipe in real time, so that the relevant production information such as the length, the wall thickness distribution and the like corresponding to the main pipe can be mastered, the selection of the sawing position can be realized, and the yield is improved. For rolled steel pipes, pipe heads and pipe tails of the rolled steel pipes need to be sawed off, and then the rest parts of the rolled steel pipes can be sawed into required sub-pipes. The branch-by-branch tracking control system can visually display the distribution condition of the length and the wall thickness of the pipe, so that the MES can make an optimal sawing scheme according to a product plan.
And, the finishing area production control unit 104 performs detection and finishing processing on the seamless steel pipe entering the finishing area. The inspection and finishing items may include straightening, blowing and sucking ash, flaw detection, inner surface inspection, length measurement and weighing, automatic packaging, and the like.
The inner surfaces of seamless steel tubes transmitted from a chain bed behind a tube gang sawing machine are all pasted with marks, a front straightening lower line code reading robot is arranged in front of a straightening machine, the front straightening lower line code reading robot sends information of the seamless steel tubes to a tracking production server one by one, the information is stored in a logic station of the straightening machine and is simultaneously sent to a PLC, and the PLC informs the PLC of the information of the current seamless steel tubes of the straightening machine.
After the straightening machine finishes straightening, the straightening machine PLC sends a message to inform the branch-by-branch tracking production server, and the branch-by-branch tracking production server stores relevant information of the straightening process to the identifier.
Inside blowing and inhaling grey PLC control compressed air and sweeping seamless steel pipe, this process destroys the sign of internal surface easily because follow first-in first-out's principle at next process, in order to prevent that the identification code of internal surface from being blown off, can check whether the label of internal surface exists and the damage through mending the mark robot, can just carry out one time and mend the sign indicating number operation through mending the mark robot if the disappearance to guarantee the existence of seamless steel pipe sign.
The flaw detector PLC controls flaw detection on the seamless steel pipe, flaw detection is carried out on the seamless steel pipe one by one in the flaw detection process, and damage to the mark is avoided. And the roller table can also supplement the damaged steel pipe of the label after magnetic flux leakage flaw detection.
In addition, the finishing zone production control unit 104 further includes a tube inner surface detection device 402. FIG. 5 is a perspective view showing a specific structure of the apparatus for inspecting an inner surface of a pipe according to the present invention; FIG. 6 is another perspective view showing a specific structure of the apparatus for inspecting an inner surface of a pipe according to the present invention; FIG. 7 is a perspective view showing a probe rod driving mechanism of the apparatus for inspecting an inner surface of a pipe according to the present invention; FIG. 8 is a perspective view showing a specific structure of a probe rod in the apparatus for inspecting an inner surface of a pipe according to the present invention; fig. 9 is another perspective view showing a specific structure of a probe rod in the pipe inner surface detection apparatus according to the present invention.
Next, a specific structure of the pipe inner surface detection device 402 will be described with reference to fig. 5 to 9.
As shown in fig. 5 and 6, the apparatus 402 for detecting the inner surface of a pipe according to the present embodiment includes a base, a probe rod driving mechanism disposed on the base, and a movable imaging mechanism mounted in front of the probe rod driving mechanism.
The detection rod driving mechanism comprises a pair of fixed vertical plates 15 which are arranged in parallel, two sets of symmetrical rolling assemblies are arranged on the inward facing surfaces of the fixed vertical plates 15, each set of rolling assemblies comprises at least one driving roller 18, the two driving rollers 18 are located below the detection rod 16, a driven roller 17 is arranged above the detection rod 16, the driven roller 17 is meshed with the driving rollers 18, the detection rod 16 is clamped between the driven rollers 17 and the driving rollers 18, and the clamped detection rod 16 can move under the rotation of the driving rollers 18. Preferably, in order to make the movement of the detection rod 16 smooth, a plurality of pairs of driven rollers 17 arranged up and down are further provided, and the detection rod 16 sequentially passes therethrough.
The outward facing surface of the fixed vertical plate 15 is provided with a transmission servo motor 21, the output end of the transmission servo motor 21 is connected with a first spline shaft 19, and a driving roller 18 is sleeved on the outer peripheral surface of the first spline shaft 19 extending to the position between the fixed vertical plates 15.
The first spline shaft 19 is further sleeved with a first synchronous toothed belt 20 on the outer peripheral surface of the outer side of the fixed vertical plate 15, the first synchronous toothed belt 20 is connected with a first synchronous belt wheel, the first synchronous belt wheel is connected with a second spline shaft, and the other driving roller 18 is arranged on the outer peripheral surface of the second spline shaft extending to the position between the fixed vertical plates 15.
The above is a description of one set of rolling assemblies, and the other set of rolling assemblies is symmetrically arranged between the fixed vertical plates 15. Thereby clamping two parallel probe rods 16 through two sets of rolling assemblies.
After the transmission servo motor 21 is started, the detection rod 16 can be driven to move forward or backward under the linkage of the first synchronous toothed belt 20, the first spline shaft 19, the second spline shaft, the driving roller 18 and the driven roller 17, so as to move in the pipe along the axial direction. The technical scheme of the transmission of the detection rod can reduce the whole size of the equipment, so that the equipment is more compact, the field installation of the equipment is convenient, and the user satisfaction is high.
The mobile camera mechanism comprises a link mechanism and a plurality of sets of parallelogram mechanisms, the plurality of sets of parallelogram mechanisms are formed around a connecting column, the connecting column 31 can be in a form of a polygon with a cross section, the plurality of sets of parallelogram mechanisms are respectively arranged on corresponding side surfaces, and for convenience of description, the cross section is a square for example. This application does not preclude the connecting column from having a common shape such as a cylindrical shape. For example, the connecting column is cylindrical, and a plurality of sets of parallelogram mechanisms are uniformly distributed around the connecting column. The front end of the connection column 31 is provided with a CCD camera, preferably an industrial CCD30, connected to a display analysis device through a network. The display analysis device can comprise a display screen and a processor, wherein program modules such as image processing, image recognition and image analysis can be installed in the processor, and the captured image of the inner wall of the pipe can be further recognized.
On either side of the connecting column 31, a strip-shaped plate spring 26 is rotatably connected at the front end and the rear end, and a connecting rod 28 is rotatably connected between the two strip-shaped plate springs 26, so that a parallelogram mechanism is formed with the connecting column 31. And preferably, one end of the connecting rod 28 is provided with a front roller 27, and the other end of the connecting rod 28 is provided with a rear roller 29 so as to be in contact with the inner wall of the pipe. In the above description, one side surface is taken as an example, and the same parallelogram mechanism is formed for the other side surfaces.
The link mechanism includes a connecting slide shaft 34, an elastic member 35, and a guide lever 36. The front end of the guide rod 36 is coaxially connected to the rear end of the connecting column 31, the connecting sliding shaft 34 is coaxially sleeved on the guide rod 36, the elastic element 35 is sleeved on the guide rod 36 and is located between the connecting sliding shaft 34 and the rear end of the guide rod 36, and the connecting sliding shaft 34 can slide on the guide rod 36. The resilient element may be, for example, a spring. The front end of the connecting sliding shaft 34 is also provided with a plurality of support rods 33, and the number of the support rods 33 is the same as that of the parallelogram mechanisms. One end of the support rod 33 is rotatably mounted on the front end of the connecting sliding shaft 34, and the other end is slidably mounted on the strip-shaped plate spring 26 adjacent thereto. Specifically, the strip-shaped plate spring 26 is provided with a slide groove 261 along the longitudinal direction thereof, and the other end of the support rod 33 is slidably fitted into the slide groove 261.
The front ends of the two detection rods 16 are respectively connected with two symmetrical connecting rods 28 in parallel. Specifically, the connecting rod 28 includes two parallel first connecting rods 281 and second connecting rods 282, one end of which is connected to the front roller 27 through a pin 37, and the other end of which is connected to the rear roller 29 through another pin 37. The front end of one detection rod 16 is connected to the moving imaging mechanism through two pin shafts 37, respectively. Likewise, the front end of the other probe rod 16 is connected to the symmetrical connecting rod 28 via its pin 37.
Under the action of the elastic element 35, the connecting sliding shaft 34 has a pushing force, and the connecting sliding shaft 34 moves upwards along the guide rod 36, so that the support rod 33 of the connecting sliding shaft exerts the pushing force on the strip-shaped plate spring 26, and the parallelogram mechanism is opened, and the opening size of the parallelogram is the same as the distance between the two detection rods 16.
Further, the pipe diameter detection device also comprises a spacing adjustment servo motor 22, and after the spacing adjustment servo motor 22 is started, the spacing between the detection rods 16 can be adjusted, so that the pipe diameter detection device can adapt to detection of different pipe diameters. Specifically, a left and a right spiral trapezoidal screws are arranged between the fixed vertical plates 15 and are mounted below the first spline shaft 19, two ends of the left and right spiral trapezoidal screws are respectively in threaded connection with the fixed vertical plates 15, the outer ends of the left and right spiral trapezoidal screws are provided with second synchronous belt wheels 24, and second synchronous toothed belts 23 are arranged between the second synchronous belt wheels 24 and the left and right adjusting servo motors 22. When the pipe reaches the detection station, the servo motor 22, the second synchronous toothed belt 23, the second synchronous belt wheel 24 and the left and right spiral trapezoidal lead screws are adjusted leftwards and rightwards to be linked, and the fixed vertical plates 15 can be driven to move towards or away from each other, so that the distance between the detection rods 16 can be adjusted, and the pipe can adapt to different pipe diameters.
Through the design of parallelogram mechanism, when the probe rod moves, can keep straight line always, increase the life of equipment and the stability of detection. And can adapt to the detection of different pipe diameters to let the CCD camera put at tubular product central point all the time, the inner wall of being convenient for equals the object distance and detects. The distance between the probe rods 16 is adjusted to be small, the small pipe diameter can be detected, and the distance between the probe rods 16 is adjusted to be large, and the large pipe diameter can be detected. And the support rod is matched with the sliding groove, so that the parallelogram mechanism has a certain deformation floating range after being opened, and cannot stop before but pass through the deformation of the parallelogram to cross an obstacle after encountering the obstacle of the inner wall. Different from the wide-angle lens which only sees the front and can cause distortion of the shot inner wall and can not accurately find the defect, the CCD camera adopts the 360-degree lens to just see the defect information of the inner wall which forms a 90-degree direction with the camera, so that the shot inner wall has no distortion and can truly reflect the actual condition in the pipe.
Preferably, the base is a lift, the lift includes a fixed base plate 1, a vertical guide shaft is arranged on the fixed base plate 1, four corners of a lifting support 7 are sleeved on the guide shaft, and linear bearings 6 are arranged between the four corners of the lifting support 7 and the guide shaft 3. The fixed bottom plate 1 is provided with a vertical linear driving mechanism which can be a hydraulic cylinder, an air cylinder, a linear push rod and the like. For example, a hydraulic cylinder 4, the upper part of the hydraulic cylinder 4 is provided with a piston rod, and the end part of the piston rod is arranged at the bottom of the lifting bracket 7. The four corners position of PMKD 1 all is equipped with guiding axle fixing base 2, and the lower extreme of guiding axle 3 is installed in guiding axle fixing base 2. The middle position of the fixed bottom plate 1 is provided with a fixed plate 5, and the hydraulic cylinder 4 is arranged on the fixed plate 5. The hydraulic cylinder 4 controls the lifting support 7 through the piston rod to realize vertical lifting adjustment, the height of the lifting support 7 is adjusted under the action of the hydraulic cylinder 4 according to the center height of the pipe, and the height of the lifting support 7 determines the detection height of the industrial CCD 30. In order to guarantee the stability of equipment among the lift operation process, guiding axle fixing base 2, guiding axle 3, linear bearing 6 play fixed, direction, gliding effect, make equipment operation more stable.
Further, the detection rod 16 is made of spring steel.
Furthermore, still include probe rod jack mechanism, probe rod jack mechanism is equipped with probe rod rolling carousel 11 including receiving and releasing frame 9 on receiving and releasing frame 9, and probe rod rolling carousel 11 is installed on receiving and releasing frame 9 through horizontally axis of rotation 14. Preferably, the storage rack 9 is installed on a horizontal moving plate 13, the horizontal moving plate 13 is installed on a linear guide rail 10, and the installation plate 13 moves along the linear guide rail 10 to adjust the position of the detection rod winding turntable 11 in a left-right moving mode. Preferably, the periphery of the detecting rod rolling turntable 11 is also provided with a safety protection cover 8, and the safety protection cover 8 is installed on the winding and unwinding frame 9 to prevent the detecting rod in the detecting rod rolling turntable 11 from popping up. The front and the back of the storage rack 9 are both provided with a reinforcing plate 12, and the lower end of the reinforcing plate 12 is arranged on a horizontal moving plate 13. The detection rod rolling turntable 11 does not need to rotate actively, but depends on the stretching out or retracting back of the elastic detection rod 16 to rotate passively, so that the structure can rotate without any power, and the development cost is saved. After the visual inspection is finished, the detection rod 16 is retracted into the detection rod rolling turntable 11 under the linkage of the driven roller 17, the driving roller 18, the spline shaft 19, the first synchronous toothed belt 20 and the transmission servo motor 21.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is only one logical functional division, and other divisions may be realized in practice.
The integrated unit implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes instructions for causing a computer device (which may be a server, a personal computer, etc.) or a processor to execute parts of the methods according to the embodiments of the present application.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A seamless steel tube branch-by-branch tracking production system is characterized by comprising:
the tube blank area production control unit is used for performing branch-by-branch tracking production control on the seamless steel tube blank entering the tube blank area by utilizing the identifier on the tube blank;
a hot rolling zone production control unit for performing branch-by-branch follow-up production control of the sized bar entering the hot rolling zone, wherein a roll reduction control device is provided which calculates and adjusts a roll reduction adjustment value of the rolling mill according to the following formula (1),
the tube array sawing area production control unit is used for carrying out tracking production control on the plurality of sub-tubes cut in the tube array sawing area one by one; and
finishing district production control unit detects and finishing the seamless steel pipe that gets into the finishing district, and it is provided with tubular product internal surface detection device, tubular product internal surface detection device possesses:
a base seat, a plurality of fixing holes and a plurality of fixing holes,
the detection rod driving mechanism is arranged on the base and used for driving at least two detection rods to move in the pipe along the axial direction; and
the mobile camera shooting mechanism comprises a connecting rod mechanism and a plurality of sets of parallelogram mechanisms formed around a connecting column, a camera connected with the display analysis equipment is arranged at the front end of the connecting column, any parallelogram mechanism comprises the connecting column, strip-shaped plate springs rotatably connected with the two ends of the connecting column, and connecting rods rotatably connected among the strip-shaped plate springs,
the connecting rod mechanism comprises a guide rod, a connecting sliding shaft and an elastic element, the guide rod is coaxially connected with the rear end of the connecting column, the connecting sliding shaft is coaxially sleeved on the guide rod, the elastic element is sleeved on the guide rod between the connecting sliding shaft and the rear end of the guide rod,
the front end of connecting the sliding shaft still is provided with many spinal branchs vaulting pole, rotatable the installing in the front end of connecting the sliding shaft of one end of bracing piece, the other end is installed on the bar leaf spring.
2. The seamless steel pipe branch-by-branch tracking production system according to claim 1,
the production control unit of the pipe gang saw area further comprises a steel pipe cutting control device for controlling the cutting length of the head and the tail of the pipe, and the steel pipe cutting control device calculates the cutting length L of the head and the tail of the steel pipe according to the following formula (2)q：
Wherein the content of the first and second substances,
the pass coefficient is in the range of 0.65-0.75;
Snis the number of participating rolling stands, and SnGreater than 3;
Zmis the average tension coefficient of the parent tube;
y is a tension superposition coefficient, and the value range is as follows: 0.65 to 0.67;
Dzis the distance between adjacent racks;
alpha is the coefficient of thermal expansion of the mother tube and takes the value
；
Δ X is the varying temperature from the sizer outlet to the tube row saw area.
3. The seamless steel pipe branch-by-branch tracking production system according to claim 1 or 2,
the detecting rod driving mechanism is further provided with a pair of fixed vertical plates which are arranged in parallel, two sets of symmetrical rolling assemblies are arranged on the inward facing surfaces of the fixed vertical plates, each set of rolling assemblies comprises at least one driving roller, and the detecting rods are clamped by a plurality of driven rollers and the driving rollers in a matched mode, so that the detecting rods driven to be clamped by the driving rollers move.
4. The seamless steel pipe branch-by-branch tracking production system according to claim 3,
the pipe inner surface detection device further comprises a distance adjustment mechanism, and the distance adjustment mechanism comprises: the left and right rotary trapezoidal screws are arranged between the fixed vertical plates, the two ends of the left and right rotary trapezoidal screws are respectively in threaded connection with the corresponding fixed vertical plates, and the left and right adjusting servo motors drive the left and right rotary trapezoidal screws to rotate so as to drive the fixed vertical plates to move in opposite directions or in the opposite directions.
5. The seamless steel pipe branch-by-branch tracking production system according to claim 1 or 2,
the device for detecting the inner surface of the pipe further comprises a detection rod retracting and releasing mechanism, wherein the detection rod retracting and releasing mechanism comprises a detection rod rolling turntable, and the detection rod is wound on the detection rod rolling turntable.
6. The seamless steel pipe branch-by-branch tracking production system according to claim 1 or 2,
and the two ends of the connecting rod are respectively connected with a roller which is used for contacting the inner surface of the pipe.
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