CN101497089B - Material-receiving device for squeezing production - Google Patents
Material-receiving device for squeezing production Download PDFInfo
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- CN101497089B CN101497089B CN2008101437551A CN200810143755A CN101497089B CN 101497089 B CN101497089 B CN 101497089B CN 2008101437551 A CN2008101437551 A CN 2008101437551A CN 200810143755 A CN200810143755 A CN 200810143755A CN 101497089 B CN101497089 B CN 101497089B
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Abstract
The invention discloses an extrusion production material receiving device, which comprises a CCD camera, a high frequency light source, a machine visual image processor, a PLC host computer, a servo motor, two horizontal conveying belts and a plurality of boats, wherein the CCD camera takes photos of extruded bar stock of an extrusion head of an extruder one by one; the high frequency light source provides background light for the CCD camera; the machine visual image processor receives photos shot by the CCD camera and carries out digitalized treatment on the photos; the PLC host computer receives data transmitted by the machine visual image processor through a serial bus, analyzes, judges and extrudes forms of products, and sends a speed regulation control command; the servo motor acts according to the command received by the PLC host computer; one horizontal conveying belt is synchronously driven by the servo motor; the other horizontal conveying belt is driven by a DC motor and transmits the boats to the horizontal conveying belt; and the plurality of the boats are positioned between a plurality of pairs of limit stop blocks on both sides of two horizontal conveying belts with a same axle line, move forward and are provided with V-shaped material receiving grooves. The extrusion production material receiving device is suitable for producing extruded products with small diameter or other small specifications and dimensions on a large scale and can ensure internal and external quality of the products.
Description
Technical field
The present invention relates to industrial products online measuring technique and device thereof, particularly a kind of online detection material-receiving device that pushes when producing minor diameter or other small size material.
Background technology
Extrusion modling is at pottery, the metallurgical widely used a kind of moulding process of industry such as (comprising carbide alloy), usually the mode of connecting material that adopts is: 1) tilt to connect material, the boat that is about to connect material is placed on the bin of inclination, move one by one successively by the conveyer belt boat that will connect material, extruder adopts the inclination fashion of extrusion simultaneously, and the angle of this inclination bin becomes certain corresponding relation with the extruder angle of inclination; 2) level connects material, and the boat that is about to connect material is placed on the bin of level, and also employing level of extruder extruding is simultaneously moved successively one by one by the conveyer belt boat that will connect material.When adopting the hart metal product of above-mentioned less (￠ 2mm is following) of two kinds of methods extruding diameter or other small dimension size,, all can make the product of extruding twist in together (accumulation) or broken usually because the conveyer belt translational speed is asynchronous with the extruder extruded velocity.In order to solve the problem that extruded product is broken or piled up, our joint studies once successful " the extruder governing system of applied for machines vision system ", as shown in Figure 1, the bar that this system extrudes extruder by video camera is taken pictures by the width of cloth, the machine vision image processor is passed to the PLC main frame after receiving photo and digitized processing, the PLC main frame sends the instruction of adjusting the extruder extrusion speed after handling by the software program of establishment, (based on the extruder governing system of machine vision, PLC﹠amp; FA, in July, 2005).This technology is used for producing the back, and we find, adjust extrusion speed by software program, the of short duration nonsynchronous technical problem of the speed of service that extrusion speed and conveyer belt occur of Shi Changhui, make extruded product by drawing-down or crowded thick, appearance and size changes, even crackle appears, all the more so when pushing tiny product; Material-receiving device only adopts the conveyer belt that connects material, the follow-up boat that connects material is still continued to use the method that manually is put on the conveyer belt, can't guarantee the to connect material axis of boat overlaps with the axis of conveyer belt, usually make to be when just having extruded to twist about unsettled free-falling very soft extruded product occurs, the distortion that twists makes product inside and outside crackle occur, and outward appearance emersion wave streakline, exterior quality is poor, and the thin more product torsional deflection of size is obvious more.
Summary of the invention
The object of the invention is exactly in order to overcome the technological deficiency that above-mentioned prior art exists when minor diameter or other small size material are produced in extruding, a kind of material-receiving device for squeezing production that adopts online measuring technique to keep the stable form of extruded product is provided, be fit to minor diameter in enormous quantities or other small dimension size product, the particularly production of hart metal product, can guarantee product inside and outside quality, reduce operator's labour intensity simultaneously.
The present invention adopts following technical scheme based on above-mentioned extruder governing system based on machine vision:
Material-receiving device for squeezing production of the present invention comprises ccd video camera, the connect material boat of groove of high frequency light source, machine vision image processor, PLC main frame, servomotor, horizontal conveying belt, band V-arrangement.The bar that ccd video camera is extruded the extrusion head of extruder is taken pictures by the width of cloth, the high frequency light source provides bias light for ccd video camera, the machine vision image processor receives the photo of ccd video camera shooting and carries out digitized processing, the PLC main frame receives the data that machine visual pattern processor transmits by universal serial bus, squeeze out the form of product whether in the deviation range that allows according to the comprehensive analysis and judgement of history image data and current image date, and send the synchronous variable-speed control instruction to servomotor, servomotor drives a horizontal conveying belt of front according to the PLC main frame speed regulating control instruction that receives, the connect material boat of groove of several band V-arrangements moves having on 2 horizontal conveying belts of same axis, boat is to be carried to a horizontal conveying belt of front with certain speed by the horizontal conveying belt in back simultaneously, the band V-arrangement connects material on some axis that positive stop are positioned horizontal conveying belt that the boat of groove evenly is provided with by the horizontal conveying belt both sides, the axis of the axis of horizontal conveying belt and extruder extrusion head is in the same vertical plane, the relative horizontal direction of the extrusion head of extruder is the downward material extrusion in an inclination angle, ccd video camera and high frequency light source are separately positioned on the both sides of the bar of extruding, and their central axis is located along the same line.
The present invention preferably has tangible black and white feature when implementing, the black and white profile battle array ccd video camera and the led light source that are suitable for the gray scale rim detection are made video camera bias light high frequency light source.
The present invention preferably has the embedded image treatment system of inferior pixel level precision at action opportunity device visual pattern processor.
The present invention's PLC main frame when implementing is provided with the manual mode and the automatic mode control program that can freely switch, and parameter is checked and alert program, and make man-machine interface with touch-screen, will be manually, automatically, the parameter interface of checking, report to the police collects on the touch-screen.
The present invention is the preferred AC servo motor of servomotor when implementing, and direct current generator is preferably dc speed-regulating motor.
The deceleration transmission mode of the present invention's servomotor when implementing is preferably by reduction box and drives the profile of tooth small pulley, the profile of tooth small pulley drives the big belt wheel of profile of tooth by synchronous cog belt again, and the big belt wheel of profile of tooth drives horizontal conveying belt by the driving wheel of the conveyer belt coaxial with it again.The deceleration transmission mode of direct current generator is preferably by the profile of tooth small pulley and drives the big belt wheel of profile of tooth by synchronous cog belt, and the big belt wheel of profile of tooth is the driving wheel driven in synchronism horizontal conveying belt by the conveyer belt coaxial with it again.
The present invention adopts the principle of technique scheme to be: the squeeze cylinder of extruder and horizontal direction are an inclination angle, be tilted to down material extrusion, the boat that connects material is placed on the horizontal conveying belt, and the product of extruding in the squeeze cylinder is caught by the boat on the conveyer belt, and by conveyer belt boat and product is taken away.Because the diameter of extruding than its form of miscellaneous goods be flexible, be continuous parabolic shape, if this moment the conveyer belt transfer rate greater than the product extruded velocity, the sagging angle of product (angle of extruded product and vertical line) will become greatly, product will or be broken by drawing-down; If the conveyer belt transfer rate is less than the product extruded velocity, the sagging angle of product will diminish, and can make product compressive strain, accumulation.The method of connecting material that the present invention adopts is harmonious by the extruded velocity of the movement velocity of control conveyer belt and product, guarantees that extruded product has stable morphology all the time, thereby reaches the purpose of guaranteeing product quality.
Advantage of the present invention is that the present invention is from the stable form that how to keep extruded product, adopt online detection extruded product form, and according to the speed of service enforcement control of the instant form of product that detects to the conveyer belt that connects material, make it synchronous with the extruded velocity of extruder all the time, thereby solved product that prior art exists when the tiny product of extruding by drawing-down, accumulation, crackle, and technical problem such as exterior quality difference.Simultaneously, adopt ccd video camera and machine vision image processing system to detect and processing measured object edge, easy to use and reliable, processing speed is fast; Select the PLC main frame for use, the control system programming is flexible, and the software upgrading upgrading is convenient; Select for use servomotor to carry out speed regulating control, response speed is fast, operates steadily, and can realize accurate control; Entire system is easy to operate directly perceived, operates steadily.
Description of drawings
Fig. 1 is the principle schematic that material-receiving device for squeezing production of the present invention is formed;
Fig. 2 is that material-receiving device for squeezing production mechanical part overall structure master of the present invention looks schematic diagram;
Fig. 3 is a material-receiving device for squeezing production mechanical part overall structure schematic top plan view of the present invention;
Fig. 4 is the conveyer belt speed regulating control principle schematic of material-receiving device for squeezing production of the present invention.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is described in further detail.
Embodiments of the invention are to be used to push produce the material-receiving device that diameter is the following hard alloy bar of ￠ 2mm.
Material-receiving device for squeezing production of the present invention, comprise that the bar 8 that the extrusion head 1 of extruder is extruded pursues the ccd video camera 4 that the width of cloth is taken pictures, the high frequency light source 5 of bias light is provided for ccd video camera 4, photo that reception ccd video camera 4 is taken and the machine vision image processor that carries out digitized processing, receive the data that machine visual pattern processor transmits by universal serial bus, and the product form that the energy analysis and judgement squeezes out sends the PLC main frame of speed regulating control instruction, servomotor 6 according to the PLC main frame speed regulating control instruction action that receives, by servomotor 6 synchronously driven horizontal conveying belts 2, by direct current generator 6 ' with certain speed (this adjustable-speed, but do not participate in PLC control) horizontal conveying belt 2 that drives ', and be placed on horizontal conveying belt 2 ' go up to connect material several boats 3 of groove of the band V-arrangement of carrying at the horizontal conveying belt 2 of its front.Horizontal conveying belt 2 and 2 ' the axis and the axis of extruder extrusion head 1 be in the same vertical plane, the extrusion head 1 relative horizontal direction of extruder has an inclination angle, is tilted to down material extrusion.
Ccd video camera 4 and high frequency light source 5 are separately positioned on the both sides of the bar of extruding 8, their central axis is located along the same line, the camera of ccd video camera 4 should be able to photograph and be continuously the parabolic bigger one section zone (as shown in Figure 4) of flexibility when extruding bar 8 and being in stable form, so just can improve the precision and the reliability of online detection.Present embodiment need carry out the gray scale rim detection, and significantly therefore the black and white feature selects black and white profile battle array ccd video camera and the led light source backlight for shooting for use.
It is inferior pixel level embedded image treatment system that the machine vision image processor is selected precision for use, utilize image software to search the function at gray scale edge, apace according to the edge image of detected bar 8 (this image shows on monitor simultaneously in real time), obtain the related data information such as shape, position, size of extrusion bar product, and the position quantity (digital quantity) that obtains passed through serial ports, utilize the mode of serial communication, send upper PLC main frame to the transfer rate of baud rate 115200bps.This treatment system volume is little, and processing speed is fast, and is easy to use and reliable, and upgrading is convenient, the cost performance height.
Adopting PLC (industrial computer able to programme) to make control system main frame of the present invention, is because the PLC programming is flexible, the software upgrading upgrading is convenient.The PLC programme-control partly is provided with the manual mode and the automatic mode that can freely switch, and adopts touch-screen as man-machine interface.When adopting manual mode, governing system is by manually-operated, and uncontrolled rule influence can be revised conveyer belt speed of service parameter by touch-screen according to the characteristic of extruded bar stock, thereby adjust the speed of service of conveyer belt 2.When adopting automatic mode, governing system is according to the characteristic of extruded bar stock, the speed of service of regulating conveyer belt 2 automatically according to control mode model as shown in Figure 4.No matter be to adopt manual mode, still adopt automatic mode, material-receiving device of the present invention can both make the product of extruding be controlled in all the time in the equilibrium area shown in Figure 4, obtains form stable, the reliable quality extruded bar stock.Establish on the touch-screen manually, automatically, the parameter interface of checking, report to the police.Can the display system situation about moving and the speed of service of setting conveyer belt by manual interface.Can display system situation about moving and the control parameter of revising automatic control law by automatic interface.Can check each parameter value of system's operation by the parameter interface.When system moves when undesired, the warning interface provides warning message, simultaneously can also some faults of online elimination.
Servomotor 6 is preferably selected AC servo motor for use, and it has good capability of fast response, and operation low speed is steady, is suitable for characteristics such as precise motion control, is particularly suitable for the speed regulating control requirement of material-receiving device of the present invention to the conveyer belt operating condition.Designed overvoltage, overcurrent protection on the control circuit of the present invention to servomotor 6, designed sudden-stop function simultaneously, when servomotor generation stall, stall, protected.
When embodiments of the invention are in operational situation, ccd video camera is taken by the width of cloth the bar product of extruding in the process that the bar product is extruded, digitized processing through the machine vision image processor, obtain the difform position of extrusion bar product, related data information such as size, the machine vision processor sends above-mentioned data to upper PLC main frame by universal serial bus, the PLC main frame is according to the analysis-by-synthesis of history image data and current image date, the form of judging product whether in the deviation range that allows (as shown in Figure 4, the intersection point of the real-time parabola form of extruded stock that monitor shows and the rim detection line of setting, be whether marginal point is between the upper and lower bound position of determining according to the characteristic of extruded product, be whether marginal point is positioned at equilibrium area), as exceed the deviation range of permission, then export the speed regulating control instruction, the action of control servomotor, thereby the purpose that the extruded velocity that reaches boat conveyer belt transmission speed and extruder is synchronous is guaranteed the profile and the inherent quality of extrusion bar.
Material-receiving device for squeezing production of the present invention is not only applicable to connecting material of minor diameter hart metal product extruding production, also be applicable to connecting material of other small dimension size hart metal product extruding production, also can be used for connecting material of other metals or non-metallic material extruding production.
Claims (6)
1. material-receiving device for squeezing production, comprise that the bar (8) that the extrusion head (1) to extruder is extruded pursues the ccd video camera (4) that the width of cloth is taken pictures, the high frequency light source (5) of bias light is provided for ccd video camera (4), receive photo that ccd video camera (4) takes and the machine vision image processor that carries out digitized processing, receive data that machine visual pattern processor transmits, and can analysis and judgement squeeze out the PLC main frame that product form sends the speed regulating control instruction by universal serial bus; Ccd video camera (4) and high frequency light source (5) are separately positioned on the both sides of the bar of extruding (8), their central axis is located along the same line, it is characterized in that it also comprises the servomotor (6) that moves according to the PLC main frame speed regulating control instruction that receives, by the synchronously driven horizontal conveying belt of servomotor (6) (2), drive another horizontal conveying belt (2 ') from boat (3) to horizontal conveying belt (2) that carry by direct current generator (6 '), be positioned at described two horizontal conveying belts (2 with same axis, 2 ') both sides some to the connect material boat (3) of groove of several the proal band V-arrangements between the positive stop (9); The axis of described two horizontal conveying belts (2,2 ') and the axis of extruder extrusion head (1) are in the same vertical plane, and the extrusion head of extruder (1) horizontal direction relatively is the downward material extrusion in an inclination angle.
2. material-receiving device for squeezing production according to claim 1 is characterized in that described ccd video camera (4) is a black and white profile battle array ccd video camera, and described high frequency light source (5) is a led light source.
3. material-receiving device for squeezing production according to claim 1 and 2 is characterized in that the embedded image processor that described machine vision image processor is inferior pixel level precision.
4. material-receiving device for squeezing production according to claim 1 it is characterized in that described PLC main frame also is provided with manual mode that can freely switch and the automatic mode control program of making man-machine interface with touch-screen, and parameter is checked and alert program.
5. material-receiving device for squeezing production according to claim 1 is characterized in that described servomotor (6) is an AC servo motor, and direct current generator (6 ') is the adjustable speed direct current generator.
6. material-receiving device for squeezing production according to claim 1 or 5, it is characterized in that described servomotor (6) drives the profile of tooth small pulley by reduction box, the profile of tooth small pulley drives the big belt wheel of profile of tooth by synchronous cog belt (7) again, and the big belt wheel of profile of tooth is driving wheel driven in synchronism one horizontal conveying belt (2) by the conveyer belt coaxial with it again; Described direct current generator (6 ') drives the big belt wheel of profile of tooth by synchronous cog belt (7 ') again by the profile of tooth small pulley, and the big belt wheel of profile of tooth is another horizontal conveying belt (2 ') of driving wheel driven in synchronism by the conveyer belt coaxial with it again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008101437551A CN101497089B (en) | 2008-11-28 | 2008-11-28 | Material-receiving device for squeezing production |
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| CN2008101437551A CN101497089B (en) | 2008-11-28 | 2008-11-28 | Material-receiving device for squeezing production |
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| CN101497089A CN101497089A (en) | 2009-08-05 |
| CN101497089B true CN101497089B (en) | 2011-11-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102642242B (en) * | 2012-05-17 | 2014-06-18 | 黎永健 | Intelligent powder distribution system in ceramic tile production |
| CN103894439B (en) * | 2014-04-01 | 2015-11-25 | 太原重工股份有限公司 | A kind of automation blow tank |
| CN105256420A (en) * | 2015-11-30 | 2016-01-20 | 天津仁众人机械自动化技术有限公司 | Online monitoring device of flyer frame |
| WO2019100275A1 (en) * | 2017-11-23 | 2019-05-31 | 沈佩军 | Extruder speed regulation system with machine vision |
| CN108556406A (en) * | 2018-05-09 | 2018-09-21 | 广东工业大学 | A kind of extruder extrusion speed control method and system |
| CN109675950A (en) * | 2019-01-17 | 2019-04-26 | 晋城鸿刃科技有限公司 | Extruder and its material-receiving device |
| CN118386365A (en) * | 2024-06-27 | 2024-07-26 | 山东华澳陶瓷科技有限公司 | Roller biscuit clamping and transferring device based on mechanical arm |
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