CN102756251A - High-strength steel plate hot-stamping molding production line and production process thereof - Google Patents
High-strength steel plate hot-stamping molding production line and production process thereof Download PDFInfo
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- CN102756251A CN102756251A CN2012102831918A CN201210283191A CN102756251A CN 102756251 A CN102756251 A CN 102756251A CN 2012102831918 A CN2012102831918 A CN 2012102831918A CN 201210283191 A CN201210283191 A CN 201210283191A CN 102756251 A CN102756251 A CN 102756251A
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Abstract
The invention relates to a high-strength steel plate hot-stamping molding production line and production process thereof. The high-strength steel plate hot-stamping molding production line is mainly composed of a 2.6*1800 mm coil feed line unit, a blanking stacking unit, a stack breaking target hitting unit, a 20m heating furnace unit, a fast loading unit, a 800t pressing unit, a fast blanking unit, a 1000*1800mm laser cutting unit and a 1200*2000mm shot blasting fat liquoring. Each unit has a programmable logic controller (PLC) control system, and the PLC control system of each unit is connected with a production line main station PLC control system through a PROFIBUS industrial bus. The production process includes uncoiling, blanking, pre-molding, breaking stacks, detecting double sheets, centering and entering the furnace, heating austenite evenly, taking out from the furnace fast, feeding materials to a pressing machine, stamping and quenching, blanking, cutting and liquoring fat. The high-strength steel plate hot-stamping molding production line and the production process has the advantages of optimizing configuration and automation of the production line, improving production efficiency, and enlarging an application range of the production line.
Description
Technical field
The present invention relates to hot press-formed equipment and technical field of producing, specifically is hot press-formed production line of a kind of high-strength steel sheet and production technology thereof.
Background technology
Along with the development of society, automotive safety is comfortable also more and more to be paid attention to by people with the energy-conserving and environment-protective problem, improves the security performance of automobile, and the fuel consumption, minimizing CO2 and the toxic emission that reduce automobile become the requirement of society to automobile industry.Adopting the hot press-formed technology of high strength steel plate is effective ways.
Heat forming technology is that high-strength steel sheet is heated to austenitic temperature scope (880 ℃-950 ℃); Make it even austenitizing; Send into fast then in the mould that inside has cooling system; Punch forming fast, pressurize quench cooled change austenite into martensite, obtain the superhigh intensity stamping parts.
Automobile has coated plate and two kinds of forms of no coated plate with high strength steel plate.At present domesticly can only produce no coating high strength steel plate, the at high temperature easy oxidation of no coated plate influences product quality.And adopting the coated plate must be from external import, cost is high, the cycle is long, and coating can stick in high temperature on the heating furnace roller rod, influences the production line use.
The method for hot forming of a kind of high-strength steel plate stamping part of application number 200910067375.9 patents of invention; Comprise blanking, heating, preliminary temperature drop are shaped, quench; Postprocessing working procedures; It is characterized in that: said method for hot forming steel plate is heated in heating furnace after the complete austenitizing, not with situation that air contacts under, it is transferred in the preliminary cooling chamber that the gas shield atmosphere arranged is cooled to 600 ℃; Cooling velocity in this preliminary cooling chamber is greater than 35 ℃/S, and then transfers to be shaped in the hot stamping forming die and quench.This patent has just simply proposed a kind of method of high-strength steel sheet drop stamping; Concrete processing object and equipment composition are not spelt out; It brings forward a kind of measure that prevents under the no coating high-strength steel sheet high temperature that oxidation is shaped and quenches that solves; But its light plate is not touched in the nitrogen cooling chamber with air by heating furnace that to implement difficulty big and the gas cooled effect is relatively poor, and moving into die forming again after being cooled to 600 ℃ quenches, and forming effect also quenches not as being shaped more than 800 ℃; Whole process quenching technical is discontinuous, is difficult to obtain uniform martensitic structure.
Application number 200910187794.6 patent of invention punching presses are quenched with steel plate and thermoforming process thereof; Disclosing a kind of punching press quenches to use steel plate and proposed thermoforming process and is: steel plate behind shearing blanking Ac3～Ac3+80 ℃ of heating; Carry out austenitizing; In heating furnace,, under 650～850 ℃ hot conditions, carry out punching press through being transferred at once in the metal die of an inner water flowing cooling after the insulation in 5～10 minutes; The workpiece that is shaped cools off in airtight mould, and mould itself relies on the water circulation to cool off, and cooling velocity forms martensitic critical cooling rate greater than austenite, and the temperature when last workpiece leaves the drop stamping production line is below 150 ℃, and air cooling is to room temperature afterwards.This patent has just simply proposed a kind of thermo shaping method equally, concrete processing object and equipment composition is not spelt out, and adopt the pure hydrogen protection in heating, and has potential safety hazard.
To the present situation of above-mentioned technology, domesticly begin to introduce external advanced production line.This production line mainly is made up of coil feed line unit, blanking stacking unit, de-stacking mark unit, heating furnace unit, rapid material-feeding unit, press unit, quick blanking unit, cut unit and ball blast oiling unit; And each unit is provided with PLC control system, has improved the automaticity of each unit.But however, be still waiting further lifting, particularly how optimize effective configuration of each link of automatic assembly line, to realize wider application or problem demanding prompt solution as the automation of whole production streamline control.
Summary of the invention
The objective of the invention is the problem that exists to prior art, the configuration through optimizing unit and then improve whole production streamline configured in one piece and automatization level, and the hot press-formed production line of a kind of high-strength steel sheet and the production technology thereof that propose.It is applied to thickness range 0.8～2.5mm, length range 400～1700mm, and the no coating high-strength boron steel plate of width range 50～1000mm reaches the production requirement of at least 3/min.
Technical scheme of the present invention comprises:
The hot press-formed production line of a kind of high-strength steel sheet; 2.6*1800mm coil feed line unit, blanking stacking unit, de-stacking mark unit, 20m heating furnace unit, rapid material-feeding unit, 800t press unit, quick blanking unit, 1000*1800mm cut unit and 1200*2000mm ball blast oiling unit are formed; There is the PLC control system of oneself each unit, it is characterized in that: the coil feed line unit mainly by uncoiler, draw material machine, levelling machine, measurement mechanism and conveyer and form; Blanking buttress material unit mainly is made up of blanking stamping machine, preformed stamping machine, buttress material machine, dumper; De-stacking mark unit mainly is made up of de-stacking manipulator, mark platform; The roller hearth type heating furnace unit mainly is made up of furnace entry table, roller hearth type heating furnace, centering platform and tablet jacking system, and wherein the centering platform is formed middle finger by two groups 12; The rapid material-feeding unit is made up of two manipulators; The press unit mainly is made up of high speed press, mould, temperature measuring equipment; Blanking unit is made up of two manipulators fast; The cut unit is made up of 6 above laser cutting machine tools; Ball blast oiling unit mainly is made up of shot-blast apparatus, oiling device; The PLC control system of each unit links to each other with the PLC of production line main website control system through the PROFIBUS industrial bus.
The de-stacking machinery hand getting of de-stacking mark unit is with having X, the Z axle moves and rotating 3 frees degree around the Z axle, and the mark platform has the double-sheet checkout gear; Adopt ceramic rod in the roller hearth type heating furnace stove in the roller hearth type heating furnace unit, the width of furnace interior is not less than 2800 mm, and internal height is not less than 100 mm, adopts Electric heating; Two manipulators of rapid material-feeding unit adopt have X, Y, Z axle move three degree of freedom, X, the moving speed 5000mm/s of y-axis shift, Z axle translational speed 3000mm/s, positioning accuracy 0.1mm, and this manipulator has blowing mechanism; Total mold clamping force 8000 KN of the press of press unit, maximum open height 1800 mm, effective travel 1000 mm, the dwell time can reach 20s, and the slide block closing speed is greater than 700mm/s, and the slide block opening speed is greater than 500mm/s, and mould inside designs cooling circuit.
The present invention has simultaneously provided the hot press-formed Production Line technology of high-strength steel sheet around aforesaid production line:
(1) the high strength steel plate is by the uncoiling of coil feed line unit, cutting, smoothing, and is sent to blanking buttress material unit;
(2) blanking buttress material unit is according to production needs blanking, stacking;
(3) dumper transports tablet and puts in place, utilizes sucker to support device by the de-stacking manipulator tablet is carried to the mark platform, after the double-sheet detection is confirmed, carries out the mark of punching press prefix, and the de-stacking manipulator puts it to advancing on the outer roller-way of fire door place stove of heating furnace then;
(4) outside advancing the fire door stove, on the roller-way, by centering body tablet is carried out the centering location, tablet gets in the roller hearth type heating furnace then; Under the nitrogen protection condition, tablet is through being heated to 850-950 ℃, behind the even austenite of structural transformation; Come out of the stove fast; Outside the plug for outlet stove on the roller-way, the tablet after will heating once more by centering body quick centering location, and by jacking system holds up fast;
(5) feeding manipulator has quick and precisely been removed the high temperature tablet through high temperature resistant clamper, and after quick and precisely putting into press die, returns fast;
(6) utilize the temperature-detecting device of press; But after detecting the high temperature tablet and being in the punching press scope, press is fast with the tablet drawing, and pressurize; In the dwell time; Tablet after the mould that has a cooling circuit will be shaped carries out Quenching Treatment, makes to organize and changes martensite fully into, the press quick return;
(7) the quick-moving speed of blanking machinery is taken out the punching press part of accomplishing that quenches, and is sent to the cut unit after being cooled to room temperature;
(8) hole processing is cut edge, cut to the laser cutting machine tool of employing five-axle linkage to part;
(9) carry out bead with shot-blasting machine, remove surface scale, after cleaning out, carry out oiling or the processing of spraying paint.
The hot press-formed Production Line process optimization of aforementioned high-strength steel sheet scheme is: the roller hearth type heating furnace of step (4) roller hearth type heating furnace unit is under the 99.99% nitrogen atmosphere protective condition tablet to be heated to 880～930 ℃ of insulations in purity; Two manipulator clamper fingers in the step (5) adopt the high temperature resistant stainless steel material, before tablet gets into mould, mold cavity are carried out automated cleaning; Step (6) the press dwell time is not less than 20s, and the slide block closing speed is greater than 700mm/s, and the slide block opening speed is greater than 500mm/s, and mould quenches to plate with the cooling rate that is not less than 40 ℃/S.
Technique effect of the present invention is mainly reflected in: the one, optimized the configuration and the automaticity of production line, and improved production efficiency; The 2nd, improved the range of application of production line, be applied to thickness range 0.8～2.5mm, length range 400～1700mm, the no coating high-strength boron steel plate of width range 50～1000mm reaches the production requirement of at least 3/min.
Description of drawings:
Fig. 1 is that the capital equipment of production line of the present invention constitutes sketch;
Fig. 2 is a kind of block diagram of technological process.
The specific embodiment:
At first combine 1 pair of production line of accompanying drawing to describe:
The production line of present embodiment is that coil feed line unit 1, blanking stacking unit 2, de-stacking mark unit 3, heating furnace unit 4, rapid material-feeding unit 5, press unit 6, quick blanking unit 7, cut unit 8 and ball blast oiling unit 9 are optimized integration.
Wherein: coil feed line unit 1 mainly by uncoiler, draw material machine, levelling machine, measurement mechanism, conveyer etc. and form, accomplish plate uncoiling, smoothing.
Blanking buttress material unit 2 mainly is made up of blanking stamping machine, preformed stamping machine, buttress material machine, haul dolly etc., accomplishes blanking, the buttress material of plate, and accomplishes the preform of complex deformation part.
De-stacking mark unit 3 mainly is made up of de-stacking manipulator, mark platform etc.; The de-stacking manipulator has X, the Z axle moves and rotate 3 frees degree around the Z axle; Can support the tablet that device and adjustment sucker adapt to the different size scope through replacing and move to take, the mark platform will have the double-sheet checkout gear.Manipulator moves tablet to mark platform position, at first carries out double-sheet and detects, and the defective waste material basket of putting into qualifiedly then carries out mark, after mark is accomplished tablet is moved to be put into heating furnace and to advance on the outer roller-way of fire door stove.
Roller hearth type heating furnace unit 4 mainly comprises furnace entry table, roller hearth type heating furnace, centering platform and tablet jacking system.Tablet gets in the stove continuously through furnace entry table and heats.Adopt ceramic rod in the roller hearth type heating furnace stove, the width of furnace interior is not less than 2800 mm, and internal height is not less than 100 mm, adopts Electric heating, and adopting purity is the protection of 99.99% nitrogen atmosphere.Tablet is heated to 880～930 ℃ of insulations, makes the even austenitizing of tablet.Tablet after the heating is come out of the stove from plug for outlet fast.The centering platform is located the tablet centering of difformity size middle finger through two groups 12, and the jacking system quick and stable holds up the high temperature tablet.
Rapid material-feeding unit 5 is made up of two manipulators, and possess X, Y, Z axle respectively and move three degree of freedom, X, the moving speed 5000mm/s of y-axis shift, Z axle translational speed 3000mm/s, positioning accuracy 0.1mm, the clamper finger adopts the high temperature resistant stainless steel material.Feeding unit material grasps the high temperature tablet on jacking system, rapid transport is in press die.Manipulator has the purging function, before tablet gets into mould, mold cavity is carried out automated cleaning.
Press unit 6 mainly comprises high speed press, mold system, temperature measuring equipment.Whether temperature measuring equipment detects the next tablet temperature of rapid material-feeding unit transhipment in working range, and the qualified press of detected temperatures carries out stamping press, and detected temperatures is defective, and feeding manipulator then takes out tablet fast and puts into ash can.Total mold clamping force 8000 kN of press, maximum open height 1800 mm, effective travel 1000 mm, the dwell time can reach 20s, and the slide block closing speed is greater than 700mm/s, and the slide block opening speed is greater than 500mm/s.Mold materials has good calorific intensity, red hardness, high wearability and fatigue behaviour, and the indoor design cooling circuit guarantees that mould quenches to plate with the cooling rate that is not less than 40 ℃/S.
Blanking unit 7 is made up of two manipulators fast, and is identical with the material loading manipulator, do not have the purging function.Be used for the part after hot press-formed is taken out from mould, be transported on the conveyer belt.
Cut unit 8 is made up of 6 above laser cutting machine tools, and what be used to accomplish part that conveying belt transfers cuts hole, side cut operation.
Ball blast oiling unit 9 mainly is made up of shot-blast apparatus, oiling device, is used to accomplish the impeller blasting of part, and it is antirust to carry out oiling.
The PLC control system that 9 each unit all have oneself can realize independent control, but as slave station, realizes the overall automation control of production line through the PROFIBUS industrial bus by the PLC of production line main website control system; According to the production line job requirement, coil feed line unit and blanking stacking unit are according to the stacking of the productive temp completion stack pallet of setting, dumper haul to de-stacking unit up to standard; Position sensor on the dumper track sends a signal to the control system; The de-stacking manipulator is started working, and tablet gets into heating furnace through furnace entry table, and heating furnace porch grating chi is sent to the control system with detection signal and realizes showing monitoring tablet position; It is to be controlled that a pair of grating chi of the section of coming out of the stove realizes that the high temperature tablet is come out of the stove etc.; Receive system signal, the high temperature tablet is come out of the stove fast, locatees centering, the quick jack-up of jacking system fast through the centering platform; The position sensor detection position signal at centering platform place is used to control feeding manipulator and locatees fast; Feeding manipulator is accomplished the press material loading fast, and the infrared radiation thermometer that is installed on the press sends to the control system with the tablet temperature, the motion of control press slide; Part after the blanking manipulator quenches drawing takes out fast and is put on the line conveyor, is sent to the cut unit then, cut edge and cut hole, ball blast oiling in ball blast oiling unit.
The present invention has simultaneously provided the hot press-formed Production Line technology of high-strength steel sheet around aforesaid production line:
1. the high-strength boron steel plate is at first by the uncoiling of coil feed line unit, smoothing, and is sent to blanking buttress material unit.
2. blanking buttress material unit is according to production needs blanking, and the complex deformation part will carry out preformed, and buttress is expected stack pallet then, and simple part directly buttress is expected stack pallet.
3. stack pallet transports tablet and puts in place, utilizes sucker to support device by the de-stacking manipulator tablet is carried to the mark platform, after the double-sheet detection is confirmed, carries out the mark of punching press prefix, and the de-stacking manipulator puts it to advancing on the outer roller-way of fire door place stove of heating furnace then.
4. outside advancing the fire door stove, on the roller-way, by centering body tablet is carried out the centering location, tablet gets in the roller hearth type heating furnace then; In order to prevent the tablet high-temperature oxydation, be under the 99.99% nitrogen atmosphere protective condition in purity, tablet is through being heated to 900 ℃; Behind the even austenite of structural transformation, come out of the stove fast, outside the plug for outlet stove on the roller-way; Tablet after will heating once more by centering body quick centering location, and by jacking system holds up fast.
5. feeding manipulator has quick and precisely been removed the high temperature tablet through high temperature resistant clamper, and after quick and precisely putting into press die, returns fast.Two manipulator clamper fingers adopt the high temperature resistant stainless steel material, before tablet gets into mould, mold cavity are carried out automated cleaning.
6. but after detecting the high temperature tablet and being in the punching press scope; The slide block closing speed is greater than 700mm/s, and the slide block opening speed is greater than 500mm/s, and press is fast with tablet drawing and pressurize; The press dwell time is not less than 20s; Tablet after the mould that has a cooling circuit will be shaped carries out Quenching Treatment with the cooling rate that is not less than 40 ℃/S, makes to organize and changes martensite fully into, the press quick return.
7. the quick-moving speed of blanking machinery is taken out the punching press part of accomplishing that quenches, and is sent to the cut unit after being cooled to room temperature.
8. adopt the laser cutting machine tool of five-axle linkage, hole processing is cut edge, cut to part.
9. carry out bead with shot-blasting machine, remove surface scale, after cleaning out, carry out oiling or the processing of spraying paint.
Each unit of production line can require adjustment operation beat flexibly according to production task, to guarantee the productive temp of whole production line.
What the present invention and embodiment emphasis will solve is with existing device and PLC control system; Constitute a complete automatic production line through optimal design; Equipment wherein and control system can be optimized and select and collocation under prompting of the present invention, detail no longer one by one here.
Claims (4)
1. hot press-formed production line of high-strength steel sheet; 2.6*1800mm coil feed line unit, blanking stacking unit, de-stacking mark unit, 20m heating furnace unit, rapid material-feeding unit, 800t press unit, quick blanking unit, 1000*1800mm cut unit and 1200*2000mm ball blast oiling unit are formed; There is the PLC control system of oneself each unit, it is characterized in that: the coil feed line unit mainly by uncoiler, draw material machine, levelling machine, measurement mechanism and conveyer and form; Blanking buttress material unit mainly is made up of blanking and punching stamping machine, preformed stamping machine, buttress material machine, dumper; De-stacking mark unit mainly is made up of de-stacking manipulator, mark platform; The roller hearth type heating furnace unit mainly is made up of furnace entry table, roller hearth type heating furnace, centering platform and tablet jacking system, and wherein the centering platform is formed middle finger by two groups 12; The rapid material-feeding unit is made up of two manipulators; The press unit mainly is made up of high speed press, mould, temperature measuring equipment; Blanking unit is made up of two manipulators fast; The cut unit is made up of 6 above laser cutting machine tools; Ball blast oiling unit mainly is made up of shot-blast apparatus, oiling device; The PLC control system of each unit links to each other with the PLC of production line main website control system through the PROFIBUS industrial bus; On the dumper track, be provided with position sensor; Be respectively equipped with the grating chi in the heating furnace porch with the section of coming out of the stove; The position sensor that is provided with at centering platform place; Press is provided with infrared radiation thermometer.
2. the hot press-formed production line of high-strength steel sheet according to claim 1 is characterized in that: the de-stacking machinery hand getting of de-stacking mark unit is with having X, the Z axle moves and rotating 3 frees degree around the Z axle, and the mark platform has the double-sheet checkout gear; Adopt ceramic rod in the roller hearth type heating furnace stove in the roller hearth type heating furnace unit, the width of furnace interior is not less than 2800 mm, and internal height is not less than 100 mm, adopts Electric heating; Two manipulators of rapid material-feeding unit adopt have X, Y, Z axle move three degree of freedom, X, the moving speed 5000mm/s of y-axis shift, Z axle translational speed 3000mm/s, positioning accuracy 0.1mm, and this manipulator has blowing mechanism; Total mold clamping force 8000 KN of the press of press unit, maximum open height 1800 mm, effective travel 1000 mm, the dwell time can reach 20s, and the slide block closing speed is greater than 700mm/s, and the slide block opening speed is greater than 500mm/s, and mould inside designs cooling circuit.
3. the hot press-formed Production Line technology of high-strength steel sheet according to claim 1 and 2 is characterized in that:
(1) the high strength steel plate is by the uncoiling of coil feed line unit, cutting, smoothing, and is sent to blanking buttress material unit;
(2) blanking buttress material unit is according to production needs blanking, punching;
(3) dumper transports tablet and puts in place, utilizes sucker to support device by the de-stacking manipulator tablet is carried to the mark platform, after the double-sheet detection is confirmed, carries out the mark of punching press prefix, and the de-stacking manipulator puts it to advancing on the outer roller-way of fire door place stove of heating furnace then;
(4) outside advancing the fire door stove, on the roller-way, by centering body tablet is carried out the centering location, tablet gets in the roller hearth type heating furnace then; Under the nitrogen protection condition, tablet is through being heated to 850-950 ℃, behind the even austenite of structural transformation; Come out of the stove fast; Outside the plug for outlet stove on the roller-way, the tablet after will heating once more by centering body quick centering location, and by jacking system holds up fast;
(5) feeding manipulator has quick and precisely been removed the high temperature tablet through high temperature resistant clamper, and after quick and precisely putting into press die, returns fast;
(6) utilize the temperature-detecting device of press; But after detecting the high temperature tablet and being in the punching press scope, press is fast with the tablet drawing, and pressurize; In the dwell time; Tablet after the mould that has a cooling circuit will be shaped carries out Quenching Treatment, makes to organize and changes martensite fully into, the press quick return;
(7) the quick-moving speed of blanking machinery is taken out the punching press part of accomplishing that quenches, and is sent to the cut unit after being cooled to room temperature;
(8) hole processing is cut edge, cut to the laser cutting machine tool of employing five-axle linkage to part;
(9) carry out bead with shot-blasting machine, remove surface scale, after cleaning out, carry out oiling or the processing of spraying paint.
4. the hot press-formed Production Line technology of high-strength steel sheet according to claim 3 is characterized in that: the roller hearth type heating furnace of step (4) roller hearth type heating furnace unit is under the 99.99% nitrogen atmosphere protective condition tablet to be heated to 880～930 ℃ of insulations in purity; Two manipulator clamper fingers in the step (5) adopt the high temperature resistant stainless steel material, before tablet gets into mould, mold cavity are carried out automated cleaning; Step (6) the press dwell time is not less than 20s, and the slide block closing speed is greater than 700mm/s, and the slide block opening speed is greater than 500mm/s, and mould quenches to plate with the cooling rate that is not less than 40 ℃/S.
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| CN201210283191.8A CN102756251B (en) | 2012-05-18 | 2012-08-10 | High-strength steel plate hot-stamping molding production line and production process thereof |
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| CN201210154404.7 | 2012-05-18 | ||
| CN201210283191.8A CN102756251B (en) | 2012-05-18 | 2012-08-10 | High-strength steel plate hot-stamping molding production line and production process thereof |
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Cited By (57)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114619211A (en) * | 2022-03-25 | 2022-06-14 | 天津恒兴机械设备有限公司 | Thermal forming processing technology for front pillar plate |
| CN114653825A (en) * | 2022-03-25 | 2022-06-24 | 天津恒兴机械设备有限公司 | Sheet metal part indirect thermal forming machining process |
| CN115032960A (en) * | 2022-08-12 | 2022-09-09 | 常州市聚凝电气自动化设备有限公司 | Industrial Ethernet and control bus based field device control system and method |
| CN116213537A (en) * | 2023-05-08 | 2023-06-06 | 海斯坦普汽车组件（昆山）有限公司 | Combined type preheats thermoforming production line |
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