CN111451281A - Device and process for online adjustment of production of copper pipe - Google Patents
Device and process for online adjustment of production of copper pipe Download PDFInfo
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- CN111451281A CN111451281A CN202010270500.2A CN202010270500A CN111451281A CN 111451281 A CN111451281 A CN 111451281A CN 202010270500 A CN202010270500 A CN 202010270500A CN 111451281 A CN111451281 A CN 111451281A
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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
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/48—Tension control; Compression control
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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
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/06—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring tension or compression
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Abstract
The invention provides a device for online adjustment of copper pipe production, which comprises a pressure roller measuring mechanism, a horizontal lead screw transmission mechanism, a vertical lead screw transmission mechanism, a roller unit and a control unit, wherein the pressure roller measuring mechanism is positioned right above a rolled pipe blank, the pressure roller measuring mechanism is arranged on the horizontal lead screw transmission mechanism, and the horizontal lead screw transmission mechanism is arranged on the vertical lead screw transmission mechanism. The invention also provides a process for online adjustment of copper pipe production, which can perform online adjustment on copper pipe production and ensure the quality of the copper pipe. The invention can detect the depth of the rolled tube blank bamboo joint mark on line, and sets the best economic depth index according to the requirement to carry out on-line closed loop feedback adjustment. Compared with the existing off-line detection technology, the method solves the dilemma of long feedback regulation period, saves labor cost and also improves production efficiency.
Description
Technical Field
The invention belongs to the field of pipe forming, and particularly relates to a device and a process for online adjusting production of a copper pipe.
Background
Copper pipes are widely used in the fields of air conditioners, refrigeration, power generation, construction, oil transportation, water transportation, gas transmission pipelines and the like due to excellent electrical conductivity, thermal conductivity, corrosion resistance and ductility of the copper pipes, and the copper pipes are required to have high requirements, particularly refrigeration pipes, not only good heat dissipation and corrosion resistance, but also enough toughness, dimensional accuracy, surface quality and the like. In the production process of the copper pipe, the black grain phenomenon often appears on the surface of a combined drawing pipe blank, the black grain is generated due to the defect of the bamboo joint mark of the three-roller planetary rolled pipe blank, the pipe blank with serious black grain finally has the defects of sawtooth injury and the like on the product, the yield of the product is reduced due to the generation of the defect, the production cost is increased, and an enterprise cannot form competitiveness on the market, so that the online quality control of the rolled surface of the pipe blank in the production process of the copper pipe is of great importance to the improvement of the market competitiveness of the enterprise.
At present, enterprises generally adopt a casting-rolling method to produce TP2 copper pipes, when a three-roller planetary rolling mill rolls a pipe blank, because the roll has an inclination angle β and a deflection angle α, a point on the pipe blank moves not only around an axis but also forwards along the direction of a rolling line simultaneously to form a spiral motion track, if the rolling speed is not proper, the roll of the rolling mill vibrates to enable the inner diameter and the outer diameter of the rolled pipe blank to be suddenly changed, and the combined action of the two causes the inner surface and the outer surface of the rolled pipe blank to form spiral bamboo joint marks.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a device and a process which can automatically detect the depth of the TP2 copper pipe bamboo joint mark on line and carry out real-time feedback processing on the collected pressure data through a controller so that the depth of the rolled pipe blank bamboo joint mark gradually meets the subsequent processing requirements.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides a device for online adjustment of copper pipe production, which comprises a pressure roller measuring mechanism, a horizontal lead screw transmission mechanism, a vertical lead screw transmission mechanism, a roller unit and a control unit, wherein the pressure roller measuring mechanism is positioned right above a rolled pipe blank, the pressure roller measuring mechanism is arranged on the horizontal lead screw transmission mechanism, and the horizontal lead screw transmission mechanism is arranged on the vertical lead screw transmission mechanism;
the vertical screw transmission mechanism comprises a first servo motor, a connecting plate, a positioning column, a first ball screw and a bottom plate, wherein the positioning column and the first ball screw are vertically and parallelly arranged on the bottom plate;
the horizontal screw transmission mechanism comprises a T-shaped supporting plate, a second ball screw, a supporting rod, a second servo motor and a speed reducer, the T-shaped supporting plate comprises a transverse plate and a vertical plate, the second ball screw and the supporting rod are horizontally arranged on the transverse plate respectively, the second servo motor and the speed reducer are arranged on one side of the transverse plate, an output shaft of the second servo motor is connected with the second ball screw through the speed reducer, and mounting holes for mounting the first ball screw and the positioning column respectively are formed in the vertical plate;
the pressure roller measuring mechanism comprises a plurality of gears, a U-shaped support frame, a plurality of pressure springs, a plurality of pressure rollers, a third servo motor and a pressure sensing transmitter, the gears are arranged above the U-shaped support frame side by side, two adjacent gears are meshed with each other, the third servo motor and the pressure springs are respectively arranged below the U-shaped support frame side by side, the third servo motor penetrates through the U-shaped support frame and is fixedly connected with a first gear at one end part, each pressure spring penetrates through the U-shaped support frame and is fixedly connected with one gear, a gear is arranged between the third servo motor and the first pressure spring and between every two pressure springs at intervals, and the lower end part of each pressure spring is provided with one pressure roller; mounting holes for mounting a second ball screw and a support rod are respectively formed in two side plates of the U-shaped support frame;
the roller unit is a three-roller planetary rolling mill, and is in communication connection with the control unit and controlled by the control unit; the control unit comprises a pressure sensor receiver, a controller and a support frame, the pressure sensor receiver and the controller are placed on the support frame, the pressure sensor receiver is connected with the controller, and the pressure sensor receiver can receive real-time measurement data sent by the pressure sensor transmitter and send the real-time measurement data to the controller.
Preferably, the number of the gears is 11, the number of the pressure springs is 5, and each pressure spring is fixedly connected with the third pinion, the fifth pinion, the seventh pinion, the ninth pinion or the eleventh pinion.
Preferably, the width of the working contact surface of each pressure roller is 2mm, and the distance between every two adjacent pressure rollers is 8 mm.
Preferably, the first ball screw is mounted on the base plate through a ball screw mount.
Preferably, the rolled tube blank is a copper blank, and a mandrel is arranged inside the copper blank.
Preferably, the three rolls of the three roll planetary mill are evenly distributed at 120 ° around the axis of the copper tube, and the axes of the rolls and the axis of the copper tube form a deflection angle α and an inclination angle β with certain angles.
Preferably, the invention also provides a process for online adjustment of copper tube production, which comprises the following steps:
s1, starting a first servo motor, driving a horizontal lead screw transmission mechanism by a first ball screw to adjust the distance between a pressure roller measuring mechanism and the tube blank at the speed of 1-2mm/S, and closing the first servo motor when a controller receives output signals of all pressure sensing transmitters;
s2, controlling a third servo motor, and adjusting the direction of the pressure roller within the range of 1 degree at each time in a clockwise manner until the data sent by each pressure sensing transmitter is stable;
s3, after the measured data of each pressure roller is stable, the pressure roller measuring mechanism starts to measure the depth of the bamboo joint mark of the rolled tube blank, the controller starts to record the data within the measuring time t and obtains the maximum value Pi of the measured data of each pressure roller and the minimum value Qi of the measured data of each pressure roller through comparison, wherein i is the label of the pressure roller;
s4, after the measuring time t is finished, starting a first servo motor, lifting the pressure roller measuring mechanism by the height h, starting a second servo motor, horizontally moving the pressure roller measuring mechanism by a distance L along the moving direction of the tube blank, and controlling the first servo motor to lower the pressure roller measuring mechanism by the same height h;
s5, measuring the depth of the bamboo joint mark of the rolled tube blank again by the pressure roller measuring mechanism, recording the data in the measuring time t again by the controller, and obtaining the maximum value Mi measured by each pressure roller in the measuring time t and the minimum value Ni measured by each pressure roller in the measuring time t by comparison; wherein i is the label of the pressure roller;
s6, comparing the magnitudes of Pi and Mi, if Pi < Mi, making Pi equal to Mi, if Pi > Mi, making the magnitudes unchanged, comparing the magnitudes of Qi and Ni, if Qi > Ni, making Qi equal to Ni, if Qi < Ni, making the magnitudes unchanged;
s7, after the step S6 is finished, the step S4 to the step S6n are repeated, the pressure roller measuring mechanism moves n +1 times in the moving direction of the rolled tube blank horizontally, so that each pressure roller measures n +2 groups of data, wherein the pressure roller measuring mechanism moves n +1 times in the moving direction of the rolled tube blank horizontally for a total distance LGeneral assemblyL x (n +1), the total distance LGeneral assemblyThe distance between the two pressure rollers is equal;
s8, the controller compares the sizes of P1, P2, p.once.and Pn, the maximum value is given to P, the controller compares the sizes of Q1, Q2, p.once.and Qn, the minimum value is given to Q, the maximum depth H of the rolled tube blank bamboo joint mark is obtained to be P-Q, and the controller judges whether H meets the threshold interval of the depth of the rolled tube blank bamboo joint mark through the built-in threshold interval;
and S9, if the H does not belong to the threshold interval, the controller feeds the result back to the three-roller planetary rolling mill, reduces the rolling speed, waits for a period of time, and detects the depth of the rolled tube blank bamboo joint mark again from the step S1 until the maximum depth of the rolled tube blank bamboo joint mark is within the threshold interval.
Preferably, the measured time T for the controller to record data in steps S3 and S5 is 1-5S.
Preferably, n equals 3, L equals 2mm, L in step S7General assemblyEqual to 8 mm.
Compared with the prior art, the invention has the following advantages:
1. the invention can detect the depth of the rolled tube blank bamboo joint mark on line, and sets the best economic depth index according to the requirement to carry out on-line closed loop feedback adjustment. Compared with the existing off-line detection technology, the method solves the dilemma of long feedback regulation period, saves labor cost and also improves production efficiency.
2. According to the invention, the depth of the bamboo joint mark is measured by using the pressure roller and the pressure spring, the data is sent to the controller by the pressure sensing transmitter, the controller processes the data and displays the processed data as a bamboo joint mark depth curve graph, and an operator on site can observe the depth of the bamboo joint mark of the rolled tube blank intuitively. Compared with the current online detection technology based on machine vision, the online detection method solves the problem of large online measurement error of the depth of the rolled tube blank bamboo joint mark due to the fact that a copper tube is bright and has a strong light reflection effect, improves the stability of the measurement process, and improves the precision of the measurement result.
Drawings
FIG. 1a is a schematic view of the overall mechanism of the apparatus of the present invention;
FIG. 1b is a schematic structural view of a control section of the present invention;
FIG. 2 is a schematic view of a partial structure of the apparatus of the present invention;
FIG. 3 is a second schematic view of a partial structure of the apparatus of the present invention;
FIG. 4 is a schematic cross-sectional view of a rolled copper billet; and
fig. 5 is a flow chart of the operation of the present invention.
Some of the reference numbers in the figures are as follows:
1-a core rod; 2-copper billet; 3, rolling; 4-a first servo motor; 5-connecting plates; 6-positioning columns; 7-a first ball screw; 8-a bottom plate; 9-T shaped support plate; 10-a second ball screw; 11-a support bar; 12-a second servo motor; 13-a reducer; 14-pinion gear; 15-U-shaped support frame; 16-a pressure spring; 17-pressure rollers; 18-a third servomotor; 19-a first ball screw hole; 20-positioning post holes; 21-support rod holes; 22-a second ball screw hole; 23-a pressure sensing transmitter; 24-a controller; 25-a pressure sensor receiver; 26-a support frame; 27-ball screw base.
Detailed Description
The technical contents, structural features, attained objects and effects of the present invention are explained in detail below with reference to the accompanying drawings.
The invention provides a device for online adjustment of copper pipe production, which comprises a pressure roller measuring mechanism, a horizontal lead screw transmission mechanism, a vertical lead screw transmission mechanism, a roller unit and a control unit, wherein the pressure roller measuring mechanism is positioned right above a rolled pipe blank, the pressure roller measuring mechanism is arranged on the horizontal lead screw transmission mechanism, and the horizontal lead screw transmission mechanism is arranged on the vertical lead screw transmission mechanism;
in fig. 1, the roll unit is a three-roll planetary rolling device, which is composed of a mandrel bar 1, a copper billet 2 and three rolls 3, wherein the mandrel bar 1 is placed in the horizontal continuous casting hollow copper billet 2, the three rolls 3 are evenly distributed around the axis of the copper billet 2 at 120 degrees, and a deflection angle α and an inclination angle β with certain angles are formed between the axes of the rolls 3 and the axis of the copper billet 2, so that rolling holes are formed by the three rolls 3, and the mandrel bar 1 and the copper billet 2 are rolled through the rolling holes.
In fig. 1, wherein the pressure roller measuring mechanism is located right above the three-roller planetary rolling copper billet 2, the pressure roller measuring mechanism is matched with the second ball screw 10 through the second ball screw hole 22, the support rod hole 21 is matched with the support rod 11 and is installed on the horizontal screw transmission mechanism, the second servo motor 12 is started, the pressure roller measuring mechanism can be driven by the second ball screw 10 to move horizontally slowly, the horizontal screw transmission mechanism is installed on the vertical screw transmission mechanism through the first ball screw hole 19 and the first ball screw 7, and the positioning column hole 20 and the positioning column 6 are matched, when the first servo motor 4 is started, the horizontal screw transmission mechanism can move up and down under the driving of the first ball screw 7.
Vertical screw drive mechanism includes first servo motor 4, connecting plate 5, reference column 6, first ball 7, ball base 27 and bottom plate 8, the vertical fixed connection of reference column 6 is on bottom plate 8, first ball 7 passes through ball base 27 and installs on bottom plate 8, first ball 7 and reference column 6 keep parallel simultaneously, connecting plate 5 is passed through to first ball 7 upper end and reference column 6's upper end and is connected, 4 fixed mounting of first servo motor are in 5 upper ends of connecting plate, first servo motor 4 can drive first ball 7 simultaneously and rotate.
In fig. 2, the horizontal screw transmission mechanism includes a T-shaped support plate 9, a positioning post hole 20, a first ball screw hole 19, a second ball screw 10, a support rod 11, a second servo motor 12 and a speed reducer 13, the positioning post hole 20 is used for being installed in cooperation with the positioning post 6, the first ball screw hole 19 is used for being installed in cooperation with the first ball screw 7, the second servo motor 12 and the speed reducer 13 are installed on one side of the T-shaped support plate 9, the second servo motor 12 is connected with the speed reducer 13, the speed reducer 13 is connected with the second ball screw 10, the second servo motor 12 controls forward rotation and reverse rotation of the second ball screw 10 through the speed reducer 13, slow rotation of the second ball screw 10 is realized through the speed reducer 13, and micro-movement of the pressure roller measurement mechanism is further realized.
In fig. 3, the pressure roller measuring mechanism includes a pinion 14, a U-shaped support frame 15, pressure springs 16, a pressure roller 17, a third servo motor 18, a support rod hole 21, a second ball screw hole 22 and a pressure sensing transmitter 23, the support rod hole 21 is used for being matched with the support rod 11, the second ball screw hole 22 is used for being matched with the second ball screw 10, 11 pinions 14 are arranged above the U-shaped support frame 15 side by side, two adjacent pinions 14 are meshed with each other, the third servo motor 18 is fixedly connected with the first pinion through the U-shaped support frame 15, five pressure springs 16 are fixedly connected with the third pinion, the fifth pinion, the seventh pinion, the ninth pinion and the eleventh pinion through the U-shaped support frame 15, and the pressure roller 17 is arranged below each pressure spring 16, so that the rotation direction of each pressure roller 17 is consistent, the width of the working contact surface of each pressure roller 17 is 2mm, the distance between every two adjacent pressure rollers 17 is 8mm, the third servo motor 18 drives the first pinion to rotate, the first pinion drives the second pinion to rotate, the rest pinions 14 rotate in sequence, the pinions 14 rotate and simultaneously drive the pressure springs 16 and the pressure rollers 17 connected with the pinions to rotate, and synchronous adjustment of the directions of all the pressure rollers 17 is further achieved.
In fig. 1, the control unit includes a pressure sensor receiver 25, a controller 24, and a support stand 26, and the support stand 26 may be a table in this embodiment. The pressure sensor receiver 25 and the controller 24 are placed on the supporting frame 26, the pressure sensor receiver 25 is connected with the controller 24, the pressure sensor receiver 25 receives real-time measurement data transmitted by the pressure sensor transmitter 23, and the controller 24 processes the data and displays the processed data on a display screen as a pressure curve measured by the pressure roller measuring mechanism, so that a worker can more intuitively know the depth of the bamboo joint marks on the surface of the rolled tube blank. In this embodiment, the controller may be a computer.
In fig. 4, H represents the depth of the slub mark of the rolled tube blank, when the pressure rollers are located at two sides of the high and high protrusions of the slub mark, the force applied to the pressure spring is increased, and the data measured by the pressure rollers is increased, when the pressure rollers are located between two slub marks, the force applied to the pressure spring is decreased, and the data measured by the pressure rollers is decreased, so that the value obtained by subtracting the minimum value from the maximum value is the depth of the slub mark.
Preferably, the invention also provides a process for online adjustment of copper pipe production, comprising the following steps:
s1, starting a first servo motor, driving a horizontal lead screw transmission mechanism by a first ball screw to adjust the distance between a pressure roller measuring mechanism and the tube blank at the speed of 1-2mm/S, and closing the first servo motor when a controller receives output signals of all pressure sensing transmitters;
s2, controlling a third servo motor, and adjusting the direction of the pressure roller within the range of 1 degree at each time in a clockwise manner until the data sent by each pressure sensing transmitter is stable;
s3, after the measured data of each pressure roller is stable, the pressure roller measuring mechanism starts to measure the depth of the bamboo joint mark of the rolled tube blank, the controller starts to record the data within the measuring time t and obtains the maximum value Pi of the measured data of each pressure roller and the minimum value Qi of the measured data of each pressure roller through comparison, wherein i is the label of the pressure roller;
s4, after the measuring time t is finished, starting a first servo motor, lifting the pressure roller measuring mechanism by the height h, starting a second servo motor, horizontally moving the pressure roller measuring mechanism by a distance L along the moving direction of the tube blank, and controlling the first servo motor to lower the pressure roller measuring mechanism by the same height h;
s5, measuring the depth of the bamboo joint mark of the rolled tube blank again by the pressure roller measuring mechanism, recording the data in the measuring time t again by the controller, and obtaining the maximum value Mi measured by each pressure roller in the measuring time t and the minimum value Ni measured by each pressure roller in the measuring time t by comparison; wherein i is the label of the pressure roller; the measurement time t can be set as required as long as the measurement requirement can be met.
S6, comparing the magnitudes of Pi and Mi, if Pi < Mi, making Pi equal to Mi, if Pi > Mi, making the magnitudes unchanged, comparing the magnitudes of Qi and Ni, if Qi > Ni, making Qi equal to Ni, if Qi < Ni, making the magnitudes unchanged;
s7, after the step S6 is finished, the step S4 to the step S6n are repeated, the pressure roller measuring mechanism moves n +1 times in the moving direction of the rolled tube blank horizontally, so that each pressure roller measures n +2 groups of data, wherein the pressure roller measuring mechanism moves n +1 times in the moving direction of the rolled tube blank horizontally for a total distance LGeneral assemblyL x (n +1), the total distance LGeneral assemblyThe distance between the two pressure rollers is equal;
s8, the controller compares the sizes of P1, P2, p.once.and Pn, the maximum value is given to P, the controller compares the sizes of Q1, Q2, p.once.and Qn, the minimum value is given to Q, the maximum depth H of the rolled tube blank bamboo joint mark is obtained to be P-Q, and the controller judges whether H meets the threshold interval of the depth of the rolled tube blank bamboo joint mark through the built-in threshold interval;
and S9, if the H does not belong to the threshold interval, the controller feeds the result back to the three-roller planetary rolling mill, reduces the rolling speed, waits for a period of time (the period of time is the time for the tube blank which is rolled before waiting to pass), and detects the depth of the rolled tube blank bamboo joint mark again from the step S1 until the maximum depth of the rolled tube blank bamboo joint mark is within the threshold interval.
The working principle of the invention is further explained by combining an embodiment, in the embodiment, 5 pressure rollers are arranged, and the distance between the two pressure rollers is 8mm, and the embodiment of the invention provides a process for online adjustment of copper pipe production, which comprises the following steps:
(1) and when all the pressure sensing transmitters output signals, the first servo motor is closed.
(2) And controlling a third servo motor, and adjusting the direction of the pressure roller within the range of 1 degree at each time in a clockwise manner until the data sent by each pressure sensing transmitter is stable, wherein the spiral direction of the pressure roller and the spiral direction of the rolled tube blank bamboo joint mark are consistent.
(3) After the measured data of each pressure roller is stable, the controller starts to record the data and obtains a maximum value Pi of the measured data of each pressure roller and a minimum value Qi of the measured data of each pressure roller through comparison, and the time of the process is 5 s; ( i 1, 2, 3, 4, 5, P1 is the maximum value measured by the first pressure roller, Q1 is the minimum value measured by the first pressure roller, and so on.)
(4) And after 5s, starting the first servo motor, lifting the pressure roller measuring mechanism by the height h, starting the second servo motor, horizontally moving the pressure roller measuring mechanism by 2mm along the moving direction of the rolled tube blank, and controlling the first servo motor to lower the pressure roller measuring mechanism by the height h, wherein the height h is kept consistent from front to back.
(5) The pressure roller measuring mechanism measures the depth of the rolled tube blank bamboo joint mark again, the time is kept for 5s, the controller records data again and obtains the maximum value Mi measured by each pressure roller in the 5s and the minimum value Ni measured by each pressure roller in the 5s through comparison; (i ═ 1, 2, 3, 4, 5, M1, the maximum value measured for the first pressure roller in this 5s, and N1, the minimum value measured for the first pressure roller in this 5 s.)
(6) Comparing Pi and Mi, if Pi < Mi, making Pi equal to Mi, otherwise, making Qi equal to Ni, if Qi > Ni, otherwise, making Qi equal to Ni, and otherwise, making Qi equal to Ni, in short, making Pi ultimately the maximum value in the data measured by each pressure roller, and making Qi ultimately the minimum value in the data measured by each pressure roller.
(7) And (4) repeating the steps (4) to (6) for 3 times on the basis of the steps, wherein each pressure roller measures five groups of data, and the pressure roller measuring mechanism horizontally moves 8mm in the moving direction of the rolled pipe blank, which is equivalent to the distance between the two pressure rollers.
(8) The controller compares the sizes among P1, P2, P3, P4 and P5, the maximum value is given to P, the controller compares the sizes among Q1, Q2, Q3, Q4 and Q5, the minimum value is given to Q, the maximum depth of the rolled tube blank bamboo joint mark is obtained to be H-P-Q, and the controller judges whether H meets the optimal section of the depth of the rolled tube blank bamboo joint mark or not through comparison;
(9) and (3) if the H does not belong to the optimal interval, feeding the H back to the three-roller planetary rolling mill, reducing the rolling speed, waiting for 30s, and detecting the depth of the rolled pipe blank bamboo joint mark again from the step (1) until the maximum depth of the rolled pipe blank bamboo joint mark is in the optimal interval, so that the quality requirement of the next process on the rolled pipe blank bamboo joint mark can be met.
The above-mentioned 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 made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.
Claims (9)
1. The utility model provides a device of production of online regulation copper pipe which characterized in that: the device comprises a pressure roller measuring mechanism, a horizontal lead screw transmission mechanism, a vertical lead screw transmission mechanism, a roller unit and a control unit, wherein the pressure roller measuring mechanism is positioned right above a rolled tube blank, the pressure roller measuring mechanism is arranged on the horizontal lead screw transmission mechanism, and the horizontal lead screw transmission mechanism is arranged on the vertical lead screw transmission mechanism;
the vertical screw transmission mechanism comprises a first servo motor, a connecting plate, a positioning column, a first ball screw and a bottom plate, wherein the positioning column and the first ball screw are vertically and parallelly arranged on the bottom plate;
the horizontal screw transmission mechanism comprises a T-shaped supporting plate, a second ball screw, a supporting rod, a second servo motor and a speed reducer, the T-shaped supporting plate comprises a transverse plate and a vertical plate, the second ball screw and the supporting rod are horizontally arranged on the transverse plate respectively, the second servo motor and the speed reducer are arranged on one side of the transverse plate, an output shaft of the second servo motor is connected with the second ball screw through the speed reducer, and mounting holes for mounting the first ball screw and the positioning column respectively are formed in the vertical plate;
the pressure roller measuring mechanism comprises a plurality of gears, a U-shaped support frame, a plurality of pressure springs, a plurality of pressure rollers, a third servo motor and a pressure sensing transmitter, the gears are arranged above the U-shaped support frame side by side, two adjacent gears are meshed with each other, the third servo motor and the pressure springs are respectively arranged below the U-shaped support frame side by side, the third servo motor penetrates through the U-shaped support frame and is fixedly connected with a first gear at one end part, each pressure spring penetrates through the U-shaped support frame and is fixedly connected with one gear, a gear is arranged between the third servo motor and the first pressure spring and between every two pressure springs at intervals, and the lower end part of each pressure spring is provided with one pressure roller; mounting holes for mounting a second ball screw and a support rod are respectively formed in two side plates of the U-shaped support frame;
the roller unit is a three-roller planetary rolling mill, and is in communication connection with the control unit and controlled by the control unit; the control unit comprises a pressure sensor receiver, a controller and a support frame, the pressure sensor receiver and the controller are placed on the support frame, the pressure sensor receiver is connected with the controller, and the pressure sensor receiver can receive real-time measurement data sent by the pressure sensor transmitter and send the real-time measurement data to the controller.
2. An apparatus for the on-line conditioning of copper tubing production as claimed in claim 1, wherein: the number of the gears is 11, the number of the pressure springs is 5, and each pressure spring is fixedly connected with a third pinion, a fifth pinion, a seventh pinion, a ninth pinion or an eleventh pinion respectively.
3. An apparatus for the on-line conditioning of copper tubing production as claimed in claim 1, wherein: the width of the working contact surface of each pressure roller is 2mm, and the distance between every two adjacent pressure rollers is 8 mm.
4. An apparatus for the on-line conditioning of copper tubing production as claimed in claim 1, wherein: the first ball screw is installed on the bottom plate through the ball screw base.
5. An apparatus for the on-line conditioning of copper tubing production as claimed in claim 1, wherein: the rolling tube blank is a copper tube, and a core rod is arranged inside the copper tube.
6. An apparatus for the on-line adjustment of copper tube production as claimed in claim 5 wherein the three rolls of the three roll planetary mill are evenly distributed at 120 ° around the axis of the copper tube and form an angle of deflection α and an angle of inclination β with the axis of the copper tube.
7. The process for on-line adjustment of copper tube production based on the device for on-line adjustment of copper tube production according to claim 1, characterized in that: which comprises the following steps:
s1, starting a first servo motor, driving a horizontal lead screw transmission mechanism by a first ball screw to adjust the distance between a pressure roller measuring mechanism and the tube blank at the speed of 1-2mm/S, and closing the first servo motor when a controller receives output signals of all pressure sensing transmitters;
s2, controlling a third servo motor, and adjusting the direction of the pressure roller within the range of 1 degree at each time in a clockwise manner until the data sent by each pressure sensing transmitter is stable;
s3, after the measured data of each pressure roller is stable, the pressure roller measuring mechanism starts to measure the depth of the bamboo joint mark of the rolled tube blank, the controller starts to record the data within the measuring time t and obtains the maximum value Pi of the measured data of each pressure roller and the minimum value Qi of the measured data of each pressure roller through comparison, wherein i is the label of the pressure roller;
s4, after the measuring time t is finished, starting a first servo motor, lifting the pressure roller measuring mechanism by the height h, starting a second servo motor, horizontally moving the pressure roller measuring mechanism by a distance L along the moving direction of the tube blank, and controlling the first servo motor to lower the pressure roller measuring mechanism by the same height h;
s5, measuring the depth of the bamboo joint mark of the rolled tube blank again by the pressure roller measuring mechanism, recording the data in the measuring time t again by the controller, and obtaining the maximum value Mi measured by each pressure roller in the measuring time t and the minimum value Ni measured by each pressure roller in the measuring time t by comparison; wherein i is the label of the pressure roller;
s6, comparing the magnitudes of Pi and Mi, if Pi < Mi, making Pi equal to Mi, if Pi > Mi, making the magnitudes unchanged, comparing the magnitudes of Qi and Ni, if Qi > Ni, making Qi equal to Ni, if Qi < Ni, making the magnitudes unchanged;
s7, after the step S6 is finished, the step S4 to the step S6n are repeated, the pressure roller measuring mechanism moves n +1 times in the moving direction of the rolled tube blank horizontally, so that each pressure roller measures n +2 groups of data, wherein the pressure roller measuring mechanism moves n +1 times in the moving direction of the rolled tube blank horizontally for a total distance LGeneral assemblyL x (n +1), the total distance LGeneral assemblyThe distance between the two pressure rollers is equal;
s8, the controller compares the sizes of P1, P2, p.once.and Pn, the maximum value is given to P, the controller compares the sizes of Q1, Q2, p.once.and Qn, the minimum value is given to Q, the maximum depth H of the rolled tube blank bamboo joint mark is obtained to be P-Q, and the controller judges whether H meets the threshold interval of the depth of the rolled tube blank bamboo joint mark through the built-in threshold interval;
and S9, if the H does not belong to the threshold interval, the controller feeds the result back to the three-roller planetary rolling mill, reduces the rolling speed, waits for a period of time, and detects the depth of the rolled tube blank bamboo joint mark again from the step S1 until the maximum depth of the rolled tube blank bamboo joint mark is within the threshold interval.
8. A process for the on-line conditioning of copper tubing production as claimed in claim 7, wherein: the measured time T for the controller to record data in steps S3 and S5 is 1-5S.
9. A process for the on-line conditioning of copper tubing production as claimed in claim 7 wherein in step S7 n is equal to 3, L is equal to 2mm, LGeneral assemblyEqual to 8 mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117984065A (en) * | 2024-01-31 | 2024-05-07 | 山东恒辉节能技术集团有限公司 | Pipe penetrating device, pipe penetrating method and heat exchange pipe production equipment |
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