CN2765703Y

CN2765703Y - Submerged arc weldings welding-beam automatic tracking device with video camera-shooting sensor

Info

Publication number: CN2765703Y
Application number: CN 200420012656
Authority: CN
Inventors: 李云峰; 宫文彪
Original assignee: Changchun University of Technology
Current assignee: Changchun University of Technology
Priority date: 2004-10-28
Filing date: 2004-10-28
Publication date: 2006-03-22
Anticipated expiration: 2014-10-28

Abstract

The utility model relates to a submerged arc welding welding-beam automatic tracking device with a video camera-shooting sensor, which belongs to an electromechanical class. The utility model mainly adopts a universal video camera head as the sensor. The utility model is a moulded product that an area array CCD, a lens and a drive circuit are integrated. The utility model outputs standard PAL system video signals. The utility model has the advantages of convenient use, exchangeable lens, adjustable focal distance, adjustable aperture, low price, stable and reliable operation, high sensibility, large information amount, easy buy, etc. The utility model adopts a simulation circuit and a digital circuit to amplify, shape, filter, binarize, etc., the video signals and can realize welding-beam recognition under the surface conditions of various steel plates. The utility model uses a monolithic computer to carry out data analysis and data treatment. The speed of the data treatment is quick and the clarity degree of the data treatment is high. The utility model adopts software filtering waves, welding nubbles, inner welding penetration, etc., in a software aspect. The interference resistance ability of the utility model is strong and reliability of the utility model is high.

Description

Video camera sensor submerged-arc welding seam autotracker

Technical field

The utility model relates to electrical category, particularly a kind of video camera sensor submerged-arc welding seam autotracker.

Background technology

As everyone knows, Lincoln weld is widely used in boats and ships, boiler, pressure vessel, in the production of spiral shell welded tube etc., in the Lincoln weld production process, welding wire and electric arc are embedded in below the solder flux invisible, the welding wire end requires to aim at weld seam, and whether welding wire aims at the key factor that weld seam is the decision welding quality, enterprise's red vestige of adopting luminous point guiding always or seeing the back of weld high-temperature metal carries out manual adjustments and guarantees not weld partially for many years, degree of regulation is low, response speed is slow, workman's fatiguability, product repair rate height, production efficiency is low, the cost height, product quality is low; Some mechanical contact submerged-arc welding seam autotrack modes also once appearred, but there are reasons such as solid solder joint, weld gap inequality, overlap, back side burn-through, mechanical wear to make this type of tracking mode can not adapt to the needs of production owing to weld seam, high efficiency under the intense market competition, high-quality, produce just tool vitality cheaply, the contactless vision sensor soldering joint automatic tracking device that production presses for a kind of advanced person is welded in submerged-arc welding automatically.

The utility model content

According to the purpose of this utility model, produce the active demand of butt welded seam autotracker at actual submerged arc welding, a kind of video camera sensor submerged-arc welding seam autotracker is provided, this device adopts general video frequency pick-up head to make sensor, it is an area array CCD, camera lens, the incorporate shaped article of drive circuit, output also is the pal mode vision signal of standard, it is very convenient to use, its camera lens is replaceable, the focal length aperture is all adjustable, have cheap, working stability is reliable, highly sensitive, contain much information, characteristics such as easy purchase can be used for monitoring simultaneously; In vision signal is handled, adopt simulation, digital circuit with vision signal amplify, processing such as shaping, filtering, binaryzation, remove the row synchronizing information and obtain to contain field synchronization, the pulse voltage signal of weld seam feature, binary conversion treatment adopts can react the moving average of surface of steel plate state and intensity variation fully as benchmark, thereby realize to access tangible weld seam information under the various surface of steel plate states, improved sensitivity, the reliability of system works; Carry out data analysis and processing with the MCS-51 series monolithic as central processing unit (CPU), data processing speed is fast, precision is high, has adopted software filtering and overlap, interior weldering burn-through etc. to disturb identification aspect software, and antijamming capability is strong, reliability is high.

Advantage of the present utility model is: the employing visual sensing is contactless, the nothing wearing and tearing, the tracking accuracy height (± 0.2mm), can accomplish that the weld seam under the various surface of steel plate states is accurately discerned, response speed is fast, installation, simple to operate, easy care, working stability is reliable, and is cheap.Can be applicable to the automatic/semi-automatic weldering of various submerged arcs.

Description of drawings

Fig. 1 is the utility model block diagram;

Fig. 2 handles electrical schematic diagram for the utility model vision signal;

Fig. 3 is the analysis of the utility model cpu data and processing, display circuit electrical schematic diagram;

Fig. 4 drives electrical schematic diagram for the utility model direct current generator.

The specific embodiment

As shown in Figure 1, the utility model is made of light source, sensor and welding gun assembly 1, video processing circuit 2, cpu data analysis and processing, display circuit 3, direct current motor drive circuit 4, welding gun correction direct current generator 5, video-frequency monitor 6, switch setting 7,110V dc source 8.

Set 7 when being automatic at switch, device works in the automatic deviation correction state, the real-time butt welded seam of video frequency pick-up head carries out image capturing in light source, sensor and the welding gun assembly 1, and the pictorial information of weld seam exported with standard P AL standard video signal, if weld seam is offset with respect to video camera first show center line, in the vision signal of output, the information of weld seam also necessarily changes so; Vision signal one tunnel is sent video-frequency monitor 6, video processing circuit 2 is sent on another road, in this circuit, carrying out vision signal amplifies, filtering, amplitude limit, processing such as binaryzation, weld seam information and synch information extraction are come out, these information are sent into cpu data analysis and processing, display circuit 3, in single-chip microcomputer, finish overlap by software, burn-through, non-reasonable data analysis and processing such as interference, the average value filtering of reasonable data, processing such as deviation calculating, carry out deviation size and the demonstration of correction direction at display circuit, the actuating signal of will rectifying a deviation simultaneously is sent to direct current motor drive circuit 4, direct current motor drive circuit has and prevents from the time to press when manual " transfer on a left side " " the right accent " maloperation and the right effectively defencive function of transferring is simultaneously transferred on the left side automatically the time, when control mode is automatic deviation correction, correction information is carried out real-time deviation correcting by correction processing of circuit rear drive welding gun correction direct current generator 5, video frequency pick-up head and welding gun move simultaneously, guarantee that welding wire and video camera first show center line aim at weld seam all the time; The correction motor that adopts in this device is a direct current generator, and its working power is a 110V dc source 8.

Set 7 when being manual at switch, device works in manual correction state, as shown in Figure 4, " automatic/hand " selector switch is placed manual position, stir the manual adjustments switch, drive the adjusting of manually rectifying a deviation of welding guns correction direct current generators by direct current motor drive circuit 5.

Claims

1, a kind of video camera sensor submerged-arc welding seam autotracker, it is characterized in that: adopt general black and white video camera to make sensor, and it is transformed promptly from its internal extraction field sync signal, and with of the pal mode vision signal output of weld image information with standard, wherein vision signal one tunnel is sent video-frequency monitor (6), video processing circuit (2) is sent on another road, carrying out vision signal in this circuit amplifies, filtering, amplitude limit, binary conversion treatment, weld seam information and synch information extraction are come out, again these information are sent into cpu data analysis and processing, display circuit (3), carry out deviation size and the demonstration of correction direction at display circuit (3), the actuating signal of will rectifying a deviation simultaneously is sent to drive circuit (4), after correction information is passed through the correction processing of circuit, drive welding gun correction direct current generator (5) and carry out real-time deviation correcting, video frequency pick-up head and welding gun move simultaneously, guarantee that welding wire and video camera first show center line aim at weld seam all the time.

2, a kind of video camera sensor submerged-arc welding seam autotracker according to claim 1, it is characterized in that: described correction motor is a direct current generator, its working power is 110V dc source (8).

3, a kind of video camera sensor submerged-arc welding seam autotracker according to claim 1 is characterized in that: it is hand switch that described switch is set (7).