CN109576626B - Air nozzle reference adjusting method - Google Patents
Air nozzle reference adjusting method Download PDFInfo
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- CN109576626B CN109576626B CN201710897455.1A CN201710897455A CN109576626B CN 109576626 B CN109576626 B CN 109576626B CN 201710897455 A CN201710897455 A CN 201710897455A CN 109576626 B CN109576626 B CN 109576626B
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
- C23C2/18—Removing excess of molten coatings from elongated material
- C23C2/20—Strips; Plates
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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- Materials Engineering (AREA)
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- Organic Chemistry (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to an air nozzle reference adjusting method, the scheme is that an off-line air nozzle is hung on a calibration frame, thin steel wires are pulled on two ends of the calibration frame, the steel wires are tightened through a tightening device and are used as the axes of front and rear nozzles, the angle zero correction is respectively carried out on the angles of the front and rear air nozzles by using a method of bridging a plug piece and horizontally transmitting light according to the principle of adjusting the angle and distance first; and then, two plumb lines hung on a steel wire axis are used as extended central points, the distance measurement is respectively carried out on the two ends of the front nozzle and the rear nozzle, the distance trimming is carried out on the deviation side, and the purpose of adjusting the zero position of the distance of the nozzle is achieved.
Description
Technical Field
The invention relates to an adjusting method, in particular to an air nozzle reference adjusting method, and belongs to the technical field of mechanical structure adjustment.
Background
The cold rolling hot galvanizing unit utilizes compressed air to respectively enter a cavity with nozzles, the thickness of zinc liquid on the front surface and the rear surface of a strip steel is controlled by air flow sprayed from the nozzles of the two cavities, the adjustment of the distance and the inclination angle between the two air nozzles is the key for controlling a coating, an operator generally carries out adjustment on line according to the number displayed by a PLC picture, if the numerical value of an original reference between the two air nozzles deviates, the number displayed by the PLC picture can mislead the operator, and the product quality is seriously influenced. Because the air nozzle works on the high-temperature zinc liquid level, personnel cannot work, and the reference calibration needs tools such as a plumb line and a caliper rule for measurement, so that the online adjustment cannot be carried out. Therefore, when the unit is stopped and overhauled, a method for detecting, calibrating and adjusting the distance between the two air nozzles and the inclination angle by an off-line pair in an original zero reference mode is urgently needed, so that the distance between the air nozzles and the feedback digital precision of the inclination angle encoder are improved.
Through preliminary retrieval, the on-line adjusting method described in the specification of the Chinese patent CN201510402906.0 'a hot galvanized plate on-line adjusting method and an air knife body' is an adjusting method for adjusting the clearance of an air knife lip on line by utilizing a device, and the purposes are different from the purposes of realizing the zero reference detection calibration adjusting method for the distance between a front air nozzle and a rear air nozzle and the inclination angle by adopting the technical scheme. Chinese patent CN201420586436.9, "an on-line adjustable air knife device of hot galvanizing experimental simulator", describes that the distance and angle of the air knife can be adjusted on line by using mechanical devices such as a connecting shaft, a supporting plate, etc. which are installed, and the adjustment is performed according to the number displayed on the PLC picture.
Disclosure of Invention
The invention provides an air nozzle reference adjusting method aiming at the technical problems in the prior art, the technical scheme is that an off-line air nozzle is hung on a calibration frame, thin steel wires are pulled on two ends of the calibration frame, the steel wires are tightened through a tightening device and are used as the axes of front and rear nozzles, the angle and distance regulation principle is followed, and zero correction is respectively carried out on the angles of the front and rear air nozzles by using a plug piece bridging and horizontal light transmission method; and then, two plumb lines hung on a steel wire axis are used as extended central points, the distance measurement is respectively carried out on the two ends of the front nozzle and the rear nozzle, the distance trimming is carried out on the deviation side, and the purpose of adjusting the zero position of the distance of the nozzle is achieved.
In order to achieve the above object, according to an aspect of the present invention, there is provided an air nozzle reference adjusting method, comprising:
1) the front air nozzle and the rear air nozzle are hung on a calibration frame, the two nozzles are placed face to face, and then the connecting lock catches at the two ends of the front air nozzle and the rear air nozzle are fastened, so that the distance between the air nozzles is uniformly divided by the central line of the calibration frame, and no data error occurs during measurement and calibration;
2) a steel wire is drawn at the central line of the two ends of the calibration frame, one end of the steel wire is fixed, the other end of the steel wire penetrates into a miniature cylinder, one end of the cylinder is provided with a circular gear, the cylinder is horizontally inserted into circular holes on the two sides of a U-shaped frame, the U-shaped frame body is fixed on the side surface of the calibration frame through screws, a stop dog is fixed on the side surface of the U-shaped frame, the stop dog is contacted with the circular gear on the cylinder, the cylinder rotates clockwise, the cylinder drives the steel wire, the steel wire rotates and tightens on the cylinder, when the cylinder stops rotating, the stop dog fixed on the side surface of the U-shaped frame is abutted against the circular gear, the cylinder,
3) the two plumb lines are tied at the two ends of the tightened steel wire, the distance between the two plumb lines is controlled within the range of 1.5 meters, and the aim is that the distance between the two plumb lines cannot exceed the length of the nozzle because the length of the air nozzle is 1.5 meters and the distance between the plumb lines and the nozzle can be measured;
4) the two plumbs respectively fall into an oil cup at a position 20 cm away from the ground, and the aim of the plumb is to control the shaking and the swinging of the plumbs and plumb lines by utilizing the damping property of oil liquid so as to play a stabilizing role;
5) when the angle of the two nozzles is 0 degree, zero position calibration of the distance between the nozzles can be carried out, and the aim is that when the angle of the two nozzles is 0 degree, the lower surfaces of the two nozzles are on the same horizontal plane, and the distances between the two nozzles and a central line can be equal without deviation;
6) the angle of the air nozzle is calibrated at 0 degree,
7) and calibrating the distance between the air nozzle and the zero position.
As a modification of the present invention, the step 6) specifically includes the following steps: 6) the air nozzle angle is calibrated at 0 degree, firstly, an air nozzle control system is electrified, the front nozzle face-to-face distance is controlled on an HMI (human machine interface), the set distance is 20mm, the nozzle opening degree is adjusted to have a gap of 0.8-2.0 mm, one end of the front nozzle and one end of the rear nozzle are respectively plugged with a 0.7mm glass plug piece, and a 2mm horizontal section is arranged in the gap between an upper nozzle piece and a lower nozzle piece in the opening of the nozzle.
As an improvement of the invention, the step 7) is specifically as follows, 7) air nozzle distance zero calibration, firstly electrifying a nozzle control system, controlling the face-to-face distance of front and rear nozzles to reach a set distance of 20mm on an HMI, separating linkage transmission shafts driving the nozzles to move forward and backward on an air nozzle beam respectively, measuring the distance between two plumb lines at two ends of one nozzle respectively by using a vernier caliper as a steel wire tightened on a calibration frame equally divides the distance between the two nozzles into two, wherein the steel wire is a central line between the two nozzles, two plumb lines tied at two ends of the tightened steel wire can be used as a central point between the two nozzles, if the measured central line distance between one end of the nozzle and the nozzle cannot meet 10mm, rotating the transmission shaft at the end when deviation exists, adjusting the nozzle at the end to move forward or backward until the central line distances between two ends of the nozzle and the nozzle are both 10mm equal, by the method, the distance between the front nozzle and the rear nozzle can meet the requirement that the front nozzle and the rear nozzle are controlled to face each other to reach the set distance of 20mm on the HMI, the position of the front nozzle and the position of the rear nozzle are determined as the zero position of the nozzle, the feedback numbers of the encoders carried by the transmission motors of the front nozzle and the rear nozzle are reset on the HMI, and the calibration of the distance between the air nozzle and the zero position is completed.
Compared with the prior art, the invention has the advantages that the technical scheme provides the method for detecting, calibrating and adjusting the original zero reference of the air nozzle, the off-line air nozzle is hung on the calibration frame, thin steel wires are pulled at two ends of the calibration frame, the steel wires are tightened by the tightening device and are used as the axes of the front nozzle and the rear nozzle, the zero correction is respectively carried out on the angles of the front air nozzle and the rear air nozzle by using the methods of bridging of the plug pieces and horizontal light transmission according to the principle of firstly adjusting the angle and then adjusting the distance; then, two plumb lines hung on a steel wire axis are used as extended central points, distance measurement is respectively carried out on two ends of the front nozzle and the rear nozzle, distance trimming is carried out on a deviation side, and the purpose of adjusting the zero position of the distance of the nozzles is achieved; the scheme realizes the original zero reference detection calibration adjustment of the distance between the front air nozzle and the rear air nozzle and the inclination angle, improves the feedback accuracy of the distance between the air nozzles and the inclination angle encoder, avoids misleading of feedback numbers to operators, and improves the product quality.
Drawings
Fig. 1 is a schematic drawing of a steel wire plumb line suspension.
FIG. 2 is a schematic view of nozzle angle null adjustment.
Fig. 3-1 and 3-2 are schematic views of the tightening device.
FIG. 4 is a flow chart of nozzle zeroing operation.
In the figure: 1-a front nozzle; 2-rear nozzle; 3-steel wire; 4-plumb line; 5-oil cup; 6-plug sheet; 7-horizontal vertical plug; 8-white paper; 9-a light source; 10-a tightening device; 101-a stopper; 102-a gear; 103-cylinder.
The specific implementation mode is as follows:
for the purpose of enhancing an understanding of the present invention, the present embodiment will be described in detail below with reference to the accompanying drawings.
Example 1: referring to fig. 1-4, an air nozzle reference adjustment method specifically includes the following steps:
1) the front and the rear air nozzles 1 and 2 are hung on a calibration frame, the two nozzles are placed face to face, and then the connecting lock catches at the two ends of the front and the rear air nozzle beams are fastened, so that the distance between the air nozzles is uniformly divided by the central line of the calibration frame, and no data error occurs during measurement and calibration;
2) a steel wire is pulled at the central line of two ends of a calibration frame, one end of the steel wire is fixed, the other end of the steel wire penetrates into a miniature cylinder 103, one end of the cylinder is provided with a gear 102, the cylinder is horizontally inserted into round holes on two sides of a U-shaped frame 10, a U-shaped frame body is fixed on the side surface of the calibration frame through screws, a stop dog 101 is fixed on the side surface of the U-shaped frame, the stop dog 101 is contacted with the round gear 102 on the cylinder to rotate the cylinder clockwise, the cylinder 103 drives the steel wire, the steel wire rotates and tightens on the cylinder, when the cylinder stops rotating, the stop dog 101 fixed on the side surface of the U-shaped frame is abutted against the round gear 102, the cylinder cannot,
3) two plumb lines 4 are tied at two ends of the tightened steel wire 3, the distance between the two plumb lines is controlled within the range of 1.5 meters, and the aim is that the distance between the two plumb lines cannot exceed the length of the nozzle because the length of the air nozzle is 1.5 meters and the distance between the plumb line 4 and the nozzles 1 and 2 can be measured;
4) the two plumbs respectively fall into an oil cup 5 at a position 20 cm away from the ground, and the aim of the plumb bob is to control the swinging and the swinging of the plumb bob and a plumb bob line by utilizing the damping property of oil liquid, so that a stabilizing effect is achieved;
5) when the angle of the two nozzles 1 and 2 is 0 degree, zero position calibration of the distance between the nozzles can be carried out, and the aim is that when the angle of the two nozzles is 0 degree, the lower surfaces of the two nozzles are on the same horizontal plane, and the distances between the two nozzles and a central line can be equal without deviation;
6) the air nozzle 1, 2 angle 0 degree demarcate, at first electrify the air nozzle control system, control the front and back nozzle face-to-face distance to reach the set distance 20mm on HMI, because the nozzle opening degree adjustment is generally only 0.8 to 2.0mm gap, so one end of the front and back nozzle is plugged into a 0.7mm glass plug 6, because there is a 2mm horizontal segment in the gap between the upper nozzle plate and the lower nozzle plate in the nozzle opening, after plugging the 0.7mm plug into the nozzle, one end warp phenomenon will not occur, the plugs plugged into the front and back nozzle correspond to each other, there is a 1mm gap between the two plug ends and the end to form a gap bridge, the purpose is to adopt a 1mm plug 7 horizontally vertically placed on the gap bridge, behind the plug 7 of the horizontal cube, a piece of white paper 8 is held by hand to shelter, the white paper has a distance of 10cm from the plug of the horizontal cube, the purpose is that the light of a flashlight 9 can be utilized to face white paper for irradiation, at the moment, a worker faces the gap between the plug sheet 7 which is horizontally vertically placed and the plug sheet 6 which is plugged in the front nozzle and the rear nozzle with eyes, because the light reflected by the white paper 8 is behind the plug sheet 7 which is horizontally vertically placed, if the light can be seen between one end of the plug sheet 7 which is vertically placed and the plug sheet 6 which is horizontally placed, the nozzle on the side is not adjusted to be horizontal, namely 0 degree, the nozzles 1 and 2 are controlled to be horizontal through a hand-operated angle adjusting hand wheel (not shown in the figure), until the light cannot be seen between one end of the plug sheet 7 which is vertically placed and the plug sheet 6 which is horizontally placed, the nozzle angle is adjusted to be 0 degree at the moment.
The mechanical position of the nozzle is already at 0 degree, whether the scale on the hand-operated meter (not shown in the figure) is at the zero position at the moment is checked, and if the pointer is not at the zero position of the scale, the pointer on the hand-operated meter is adjusted to the zero position of the scale.
The link mechanism of the nozzle is provided with an encoder, after the nozzle control system is electrified, the feedback value of the angle encoder can be seen on the HMI, if the feedback value of the angle is not zero, the feedback value of the encoder on the HMI is reset and cleared, and the adjustment of the nozzle angle of 0 degree is completed.
7) The air nozzle is calibrated at zero position, firstly, the nozzle control system is electrified, the front nozzle and the rear nozzle are controlled to face in a distance of 20mm on the HMI, a linkage transmission shaft (not shown in the figure) which drives the nozzle to move forwards and backwards is respectively separated on the air nozzle beam, because the distance between the two nozzles is equally divided by the tightened steel wire on the calibration frame, the steel wire is a central line between the two nozzles, two plumb lines tied at the two ends of the tightened steel wire can be used as a central point between the two nozzles, the distance between the two ends of one nozzle and the two plumb lines is respectively measured by a vernier caliper, if it is measured that the distance between the center line of the nozzle and the end of the nozzle does not satisfy 10mm, if there is a deviation, the transmission shaft at the end can be rotated to adjust the nozzle at the end to move forwards or backwards until the distances from the two ends of the nozzle to the center line of the nozzle are equal to 10 mm; by the method, the distance between the front nozzle and the rear nozzle can meet the requirement that the front nozzle and the rear nozzle are controlled to face each other to reach the set distance of 20mm on the HMI, the position of the front nozzle and the position of the rear nozzle are determined as the zero position of the nozzle, the feedback numbers of the encoders carried by the transmission motors of the front nozzle and the rear nozzle are reset on the HMI, and the calibration of the distance between the air nozzle and the zero position is completed.
It should be noted that the above-mentioned embodiments are not intended to limit the scope of the present invention, and all equivalent modifications and substitutions based on the above-mentioned technical solutions are within the scope of the present invention as defined in the claims.
Claims (1)
1. An air nozzle reference adjustment method, characterized by the following:
1) the front air nozzle and the rear air nozzle are hung on a calibration frame, the two nozzles are placed face to face, and then the connecting lock catches at the two ends of the front air nozzle and the rear air nozzle are fastened, so that the distance between the air nozzles is uniformly divided by the central line of the calibration frame, and no data error occurs during measurement and calibration;
2) a steel wire is drawn at the central line of the two ends of the calibration frame, one end of the steel wire is fixed, the other end of the steel wire penetrates into a miniature cylinder, one end of the cylinder is provided with a circular gear, the cylinder is horizontally inserted into circular holes on the two sides of a U-shaped frame, the U-shaped frame body is fixed on the side surface of the calibration frame through screws, a stop dog is fixed on the side surface of the U-shaped frame, the stop dog is contacted with the circular gear on the cylinder, the cylinder rotates clockwise, the cylinder drives the steel wire, the steel wire rotates and tightens on the cylinder, when the cylinder stops rotating, the stop dog fixed on the side surface of the U-shaped frame is abutted against the circular gear, the cylinder,
3) two plumb lines are tied at two ends of the tightened steel wire, the distance between the two plumb lines is controlled within the range of 1.5 m,
4) the two plumbs respectively fall into an oil cup at a position 20 cm away from the ground,
5) when the angle of the two nozzles is 0 degree, the distance zero calibration between the nozzles can be carried out,
6) the angle of the air nozzle is calibrated at 0 degree,
7) calibrating the distance between the air nozzle and the zero position;
the step 6) is as follows:
6) the air nozzle angle is calibrated at 0 degree, firstly, an air nozzle control system is electrified, the front nozzle and the rear nozzle are controlled on an HMI (human machine interface), the face-to-face distance reaches a set distance of 20mm, the opening degree of the nozzle is adjusted to have a gap of 0.8-2.0 mm, one end of the front nozzle and the rear nozzle are respectively plugged with a 0.7mm glass plug piece, and a 2mm horizontal section is arranged in the gap between an upper nozzle piece and a lower nozzle piece in the opening of the nozzle;
the step 7) is specifically as follows,
7) the air nozzle is calibrated at zero position, firstly, a nozzle control system is electrified, the front nozzle and the rear nozzle are controlled to face to reach a set distance of 20mm on an HMI (human machine interface), linkage transmission shafts which drive the nozzles to move forwards and backwards are respectively separated on an air nozzle beam, because a steel wire tightened on a calibration frame equally divides the distance between the two nozzles, the steel wire is a central line between the two nozzles, two plumb lines tied at two ends of the tightened steel wire can be used as a central point between the two nozzles, the distance between two ends of one nozzle and two plumb lines is respectively measured by a vernier caliper, if the distance between the central line between one end of the nozzle and the nozzle cannot meet 10mm, when deviation exists, the transmission shaft at the end is rotated, the nozzle at the end is adjusted to move forwards or backwards until the distance between the two ends of the nozzle and the central line between the nozzles are equal to 10mm, by the method, the distance between the front nozzle and the rear nozzle can meet the requirement that the front nozzle and the rear nozzle are controlled to face each other to reach the set distance of 20mm on the HMI, the position of the front nozzle and the position of the rear nozzle are determined as the zero position of the nozzle, the feedback numbers of the encoders carried by the transmission motors of the front nozzle and the rear nozzle are reset on the HMI, and the calibration of the distance between the air nozzle and the zero position is completed.
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| CN201710897455.1A CN109576626B (en) | 2017-09-28 | 2017-09-28 | Air nozzle reference adjusting method |
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| CN201710897455.1A CN109576626B (en) | 2017-09-28 | 2017-09-28 | Air nozzle reference adjusting method |
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| CN109576626B true CN109576626B (en) | 2021-02-05 |
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