CN108526241A - A kind of semitrailer guardrail Rollforming Shaped Tube technique and die-changing apparatus - Google Patents

A kind of semitrailer guardrail Rollforming Shaped Tube technique and die-changing apparatus Download PDF

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Publication number
CN108526241A
CN108526241A CN201810342962.3A CN201810342962A CN108526241A CN 108526241 A CN108526241 A CN 108526241A CN 201810342962 A CN201810342962 A CN 201810342962A CN 108526241 A CN108526241 A CN 108526241A
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CN
China
Prior art keywords
steel band
mold
steel
guardrail
semitrailer
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201810342962.3A
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Chinese (zh)
Inventor
邵长亮
宫绍庆
许维忠
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SHANDONG SHUNSHI HIGH-TECH Co Ltd
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SHANDONG SHUNSHI HIGH-TECH Co Ltd
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Priority to CN201810342962.3A priority Critical patent/CN108526241A/en
Publication of CN108526241A publication Critical patent/CN108526241A/en
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08Making tubes with welded or soldered seams
    • B21C37/0803Making tubes with welded or soldered seams the tubes having a special shape, e.g. polygonal tubes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08Making tubes with welded or soldered seams
    • B21C37/083Supply, or operations combined with supply, of strip material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/14Particular arrangements for handling and holding in place complete dies

Abstract

The present invention relates to a kind of semitrailer guardrail Rollforming Shaped Tube techniques:(1)Steel coil strip is unfolded for uncoiling;(2)Leveling carries out leveling to the steel band after expansion, and steel band is conveyed toward next station;(3)The head of steel band after leveling and tail portion are carried out shearing tack, and the steel band material tail after shearing tack are welded together with the material head after next steel band shearing tack by tack and butt welding respectively;(4)It prestores, kink storage bin will be sent into welding steel band;(5)Molding, the steel band in kink storage bin is sent to molding machine, bends to pipe to be welded gradually according to certain order;(6)The both ends that pipe is connected to each other are squeezed and carry out high-frequency welding after forming certain angular aperture by high-frequency welding;(7)Water cooling is cooled to room temperature the steel pipe of high-frequency welding by spray mode;(8)Steel pipe after water cooling is carried out sizing by special-shaped gradual change sizing by sizing unit;(9)Steel pipe cutting after sizing is specific length by copying.

Description

A kind of semitrailer guardrail Rollforming Shaped Tube technique and die-changing apparatus
Technical field
The present invention relates to steel pipe forming technical field more particularly to a kind of semitrailer guardrail Rollforming Shaped Tube techniques And die-changing apparatus.
Background technology
Steel pipes with straight is mainly used in public waterworks, petrochemical industry, chemical industry, power industry, agricultural irrigation, city Build etc., liquid can be used as to convey and used, such as water supply, draining, gas conveying is can also be used as and use, such as coal gas, steaming air-liquid Liquefied oil gas is also used as structure use, makees pile driving pipe, makees bridge, can also be used as harbour, road, building structure pipe.Closely Several years straight seam welded pipe are also widely used in automotive field and furniture house ornamentation field, are especially used in the guardrail of semitrailer On play good effect.But the current production technology with the straight seam welding steel tubes on semitrailer guardrail is more Complexity causes it higher at production cost, does not meet market demand development trend;And current production technology is carrying out mold more Cumbersome when changing, especially in the replacement of left and right mold, holding time is long, bad to positivity.
Invention content
In view of the deficiencies of the prior art, the present invention provides a kind of semitrailer guardrail Rollforming Shaped Tube technique and molds more Changing device reduces production cost, improves production efficiency, and keeps die change more quick.
The present invention is achieved through the following technical solutions, provides a kind of semitrailer guardrail Rollforming Shaped Tube technique, It is specific as follows:
(1)Uncoiling installs steel coil strip to uncoiler, and uncoiling expansion is carried out by uncoiler;
(2)Leveling carries out leveling to the steel band after expansion, and steel band is conveyed toward next station, to ensure the flatness of steel band;
(3)The head of steel band after leveling and tail portion are carried out shearing tack by tack and butt welding respectively, and will shear the steel after tack Strip tail welds together with the material head after next steel band shearing tack, and the steel band being welded is conveyed toward next station, leads to That crosses steel band is spliced to form longer steel band, with ensure unit can continuous production, improve production efficiency;
(4)It prestores, kink storage bin will be sent into welding steel band, this step is for storing steel band, to ensure that unit is continuously given birth to It is not influenced by material volume replacement when production, avoids wasting time because of shutdown;
(5)Molding, the steel band in kink storage bin is sent to molding machine, bends to pipe to be welded gradually according to certain order Base, bending radius are determined according to the pipe to be obtained;
(6)The both ends that pipe is connected to each other are squeezed and carry out high-frequency welding after forming certain angular aperture by high-frequency welding, and welding is completed The burr flattening-out of commissure is ensured by tumbling rack by the quality of steel pipe finished product afterwards;
(7)Water cooling is cooled to room temperature the steel pipe of high-frequency welding by spray mode, it is hard can to improve steel pipe to a certain extent Degree is convenient for the elimination of welding stress;
(8)Special-shaped gradual change sizing carries out the steel pipe after water cooling by being sequentially installed with the sizing unit of 5 groups of molds from front to back Sizing, every group of mold on sizing unit include the upper/lower die and left and right mold of relative motion, the 1st group to the 5th group mold The cavity wall radian that upper/lower die and left and right mold surround cavity is sequentially reduced, and upper/lower die and left and right mold in the 5th group of mold The cavity wall radian for surrounding cavity is 0, and pipe passes through the extrusion forming of 5 groups of molds successively from front to back, and it is straight to ultimately form tube wall The shape tube on side reaches the requirement of semitrailer guardrail, by being gradually changed to tube wall radian, avoids one-pass molding and makes At the situation of tube wall stress unevenness, while it ensure that the accuracy of shape tube cross sectional shape;
(9)Steel pipe cutting after sizing is specific length by copying;
(10)Runout table, by the steel pipe market of specific length after cutting to product collecting region;
(11)Product is collected, by the steel pipe collecting of specific length, pile.
As an optimization, in the step(4)In, when steel band enters kink storage bin, by import arrangement for deflecting by steel Band-offset goes to vertical state, and the outlet arrangement for deflecting that steel band is deflected to horizontality is arranged in the outlet of kink storage bin.This Prioritization scheme increases the storing ability of kink storage bin, and is conveniently transported toward subsequent processing.
As an optimization, in the step(5)In a graded refer to first going out the two sides of steel band to homonymy symmetrical molding Segmental arc is gradually lengthened the segmental arc of both sides by being molded several times, until the segmental arc of both sides formed to semicircle.This prioritization scheme The rounding off that can ensure steel pipe radian avoids the occurrence of oval phenomenon.
As an optimization, in the step(9)In by contact and be equipped with steel pipe the measuring roller of incremental encoder into Row surveys length, and cut-off is determined after the signal of cutting equipment acquisition incremental encoder.Such long mode of survey can make cutting position Positioning is more accurate, and the velocity variations of steel pipe will not have an impact the control accuracy of cut-off in cutting process.
A kind of semitrailer guardrail Rollforming Shaped Tube die-changing apparatus, including small car body and it is installed in the small car body On track box, and the two-way hydraulic cylinder that is installed on the track box, the both sides piston rod end of the two-way hydraulic cylinder It is installed with electromagnet respectively, the skidway hole consistent with the piston rod direction of two-way hydraulic cylinder is offered in the track box, it is described A baffle is installed in skidway hole, being slipped respectively in the skidway hole of the baffle both sides has supporting beam, the supporting beam to be equipped with Elastic barrier resetting apparatus, supporting beam stretch out the distance between one end and elastic barrier resetting apparatus of skidway hole and are not less than mold Width, conllinear mold sliding slot is additionally provided in the supporting beam of both sides.
Electromagnet is closely attracted after being powered with mold in this programme, will by the action of two-way hydraulic cylinder both sides piston rod Left and right mold is moved along mold sliding slot to press bed simultaneously, be ensure that synchronous progress, and good to neutrality, is improved more Efficiency is changed, when dismantling mold, during piston rod stretches out, electromagnet encounters elastic barrier resetting apparatus, to drive supporting beam Protruding, when workbench is encountered in supporting beam outer end, piston rod continues to stretch out, and elastic barrier resetting apparatus compressive deformation makes Electromagnet by elastic barrier resetting apparatus, after electromagnet is attracted with mold, piston rod is retracted, and mold is completely into support When on beam, electromagnet power-off, piston rod continues to retract, and after electromagnet touches elastic barrier resetting apparatus, supporting beam is retracted therewith, When the inner end of supporting beam is touched to baffle, piston rod squeezes elastic barrier resetting apparatus, it is made to lose barrier effect, piston rod warp Later, elastic barrier resetting apparatus resets under elastic reaction, during piston rod extends and retracts, supporting beam is driven to stretch Go out and retract, reduce equipment occupation space, simplifies structure.
As an optimization, the electromagnet is equipped with the protrusion being adapted to mold side towards the side of mold.By being set to The protrusion of mold side adaptation, increases the contact area of electromagnet and mold, prevents from disengaging in drawing process.
Preferably, the elastic barrier resetting apparatus includes vertical with the piston rod of two-way hydraulic cylinder and solid with supporting beam The cross bar that connects is arranged torsional spring on the cross bar, and the block affixed with the spring body of the torsional spring, the spring silk of the torsional spring Both ends are affixed with supporting beam, and the block is T shapes, and the lower edge of block upper boss both sides is respectively provided with chamfering, and cross bar axis is extremely The distance of block lower boss front and back sides is less than to the distance of upper surface of support beam, and the front and rear edges of electromagnet lower end also is provided with Chamfering.
When electromagnet encounters block, since the force of sliding friction of supporting beam is smaller, torsional spring does not deform, supporting beam with It the stretching of piston rod and is stretched out to workbench, when supporting beam encounters workbench, piston rod continues to stretch out and make torsional spring Deformation, block rotate therewith, and lose the barrier effect to electromagnet, electromagnet is moved to after block at mold, electromagnet It is attracted with mold after energization, during piston rod is retracted, is equally first to drive supporting beam to retract under the blocking of block, is propping up Beam is supportted by after baffle, electromagnet pushes block rotation and passes through block, and final piston rod is fully retracted.
Preferably, the elastic barrier resetting apparatus includes vertical with the piston rod of two-way hydraulic cylinder and solid with supporting beam The cross bar connect, and it is arranged block on the cross bar, the both sides of the block are respectively equipped with the spring being connect with supporting beam, The block is T shapes, and the lower edges of block upper boss both sides is respectively provided with chamfering, side before and after cross bar axis to block lower boss The distance in face is less than to the distance of upper surface of support beam, and the front and rear edges of electromagnet lower end also is provided with chamfering.
When electromagnet does not touch block, the spring of both sides makes it keep equilibrium state, during piston rod stretching, electromagnetism When iron starts to brush up against block, since the force of sliding friction of supporting beam is smaller, spring does not deform, when supporting beam encounters workbench When, piston rod continues to stretch out and spring is made to deform, and baffle is taken advantage of a situation rotation, loses the barrier effect to electromagnet, electromagnet It is moved at mold after block, electromagnet is attracted after being powered with mold, is equally first to keep off during piston rod is retracted Supporting beam is driven to retract under the blocking of block, after supporting beam is by baffle, electromagnet pushes block rotation and passes through block, most Whole piston rod is fully retracted.
Beneficial effects of the present invention are:Straight seam welding pipe is become by traditional hot-cast abnormal shape production technology, according to semi-mounted Cross sectional shape needed for vehicle guardrail gradually carries out cold roll forming to pipe, and forming process is uniform, and coaxial speed ratio is small, is not likely to produce It scratches, product surface quality is good, also improves the molding qualification rate and performance of product;The die-changing apparatus used when production can be with Left and right mold is pushed in place simultaneously, and ensure that positivity, improve die change efficiency, ensure that high molding conjunction Lattice rate.
Description of the drawings
Fig. 1 is host production technological process of the present invention;
Fig. 2 ~ Fig. 6 is shaping round tube plain-barreled roll first of the present invention to the 5th frame shaping schematic view;
Fig. 7 ~ Fig. 9 is shaping round tube edger roll first of the present invention to third frame shaping schematic view;
Figure 10 ~ Figure 12 is the silent molding first of pipe of the present invention to third frame shaping schematic view;
Figure 13 is pipe welding fabrication schematic diagram of the present invention;
Figure 14 ~ Figure 18 is pipe gradual change shape tube first of the present invention to the 5th frame shaping schematic view;
Figure 19 ~ Figure 23 is pipe gradual change shape tube first of the present invention to the corresponding mold extrusion forming schematic diagram of the 5th frame;
Figure 24 is the die-changing apparatus structural schematic diagram in the embodiment of the present invention one;
Figure 25 is the die-changing apparatus structural schematic diagram in the embodiment of the present invention two;
Figure 26 is block scheme of installation;
As shown in the figure:
1, mold, 2, electromagnet, 3, two-way hydraulic cylinder, 4, baffle, 5, elastic barrier resetting apparatus, 6, torsional spring, 7, block, 8, branch Support beam, 9, small car body, 10, track box, 11, spring.
Specific implementation mode
In order to clarify the technical characteristics of the invention, below by specific implementation mode, this programme is illustrated.
Embodiment one:
A kind of semitrailer guardrail Rollforming Shaped Tube technique, it is specific as follows:
Uncoiling installs steel coil strip to uncoiler, is driven steel coil strip to rotate from uncoiler and coil of strip is dismantled with perching knife. The center of steel coil strip is located on unit centre line, and micro- brake apparatus is arranged on uncoiler, steel band when preventing from stopping in emergency Rollback is to play loose winding.
Leveling, steel band is taken the lead to dismantle by pressure roller with perching knife cooperation uncoiler in straight peen gripping leveling machine, and steel band is sent into Straight peen gripping leveling machine.Steel band is sent into pinch roller by perching knife cooperation straight peen pressure roller after being aligned steel band head, pinches roll-in It is lower by steel belt clamping, steel band is sent into pinch roller by rotation main motor, while perching knife withdraws in situ, unreel formula on perching knife.Straight peen roller Original position is withdrawn, unreel pressure roller pushes down coil of strip on uncoiler, after preventing steel roll tower shaped, steel band from entering gripping leveling machine, leveling roll-in Down toward suitable position, steel band is sent into Shearing Butt Resistance Welder, and Shearing Butt Resistance Welder is coordinated to complete shearing butt welding work.
The head of steel band after leveling and tail portion are carried out shearing tack by tack and butt welding respectively, and will be after shearing tack Steel band material tail welds together with the material head after next steel band shearing tack, and the steel band being welded is conveyed toward next station. Detailed process is that steel band head enters shearing position suitable length(It is more than shearing cutting edge that head, which need to shear part,)Afterwards, it pinches and rectifys Flat owner's electric motor clutch is opened, while pressure roller motor stops, and uncoiler motor stops, and hydraulic shear cutting edge is made in high pressure oil at this time Steel band head is sheared with lower.Steel band after shearing is sent into kink under the action of preceding pinch roller, when steel band tail portion enters shearing When butt welding, stop kink main motor, steel band adjusts good position under the action of sending roller later, steel band tail portion cut off, steel band exists Advance under the action of pinch roller afterwards, after steel band tail portion reaches butt welding position, steel band tail portion is fixed on to welding position by rear fender pressure Place is set, the material head of next coiled strip is waited for.It is sent to butt welding position after the head of next coil of strip is clipped, centralising device adjusts steel band Front pressuring plate is depressed after being aligned end to end, compresses steel band head, steel band is welded.By front and back pressing plate liter after steel band welding It rises, rear pinch roller clutch is opened, and steel band is sent into kink under the action of kink main motor.
It prestores, kink storage bin will be sent into welding steel band, for storing steel band, when ensureing unit continuous production not It is influenced by material volume replacement.For steel band when into kink, steel band is deflected to vertical state by entrance arrangement for deflecting, and steel band enters kink Pinch roller.For steel band after storage bin and spiral frame, steel band goes out spiral frame vertically, steel band after exporting arrangement for deflecting, Steel band go to horizontality and to welding line upward.After steel band enters kink pinch roller, kink pinch roller clamps steel band, kink Steel band is sent into kink storage bin by main motor, and kink main motor rotates simultaneously with storage bin outer ring motor at this time, storage bin motor Ratio value between rotating speed and kink main motor rotating speed is set in PLC.Kink storage bin motor speed is according to kink master The variation of motor speed and change automatically, it is ensured that steel band will not ringfeder in feed bin.Similarly, spiral frame inner ring motor with Molding machine main motor synchronizes, and reduces molding machine when pulling in steel band, pulling force suffered by steel band and caused by deflection.
Molding, the steel band in kink storage bin is sent to molding machine, bends to pipe to be welded gradually according to certain order The two sides of steel band are first gone out segmental arc to homonymy symmetrical molding, are gradually lengthened the segmental arc of both sides by being molded several times by base, until The segmental arc of both sides formed to semicircle.Molding machine row arrangement form be:Five frame two roller machine framves, four erect roller arrangement, three framves Four-roll rack, transmission device add gear-box to pass through Hooks coupling universal coupling and breast roller axis connection, driving by motor acceleration and deceleration machine Roll mandrel rotates.
The both ends that pipe is connected to each other are squeezed and carry out high-frequency welding after forming certain angular aperture, welded by high-frequency welding Cheng Hou, the weld seam burr removing formed when welding is clean and curling collects, then by tumbling rack the hair of commissure Pierce flattening-out.Welding and deburring device are oriented to roller frame, four-roller type extruding roll stand, external burr removing machine and dual roll type by dual roll type The part such as pressure roller rack forms.Dual roll type is oriented to roller frame and front and back up and down can adjust, to ensure soldering angle when welding, to Ensure the quality of welding.Upper two roller and left and right edger roll in four-roller extruding rack are all made of electronic adjustment, and left and right edger roll is Dullness, upper two roller can be adjusted, can also be adjusted separately simultaneously.Each roller adjustment position is motor band turbine lead screw lift adjustment.
Water cooling is cooled to room temperature the steel pipe of high-frequency welding by spray mode, and spray tube can be removed, same as needed When or individually open, steel tube guiding device is equipped in water tank, facilitates the movement of steel pipe.
Special-shaped gradual change sizing, by the steel pipe after water cooling by frame gradual change sizing to required caliber, and through turks-head roll(Four Roller straightener)Steel pipe is aligned.Sizing unit horizontal frames structure is identical as shaping machine set precisive shaped segment structure.Specifically, will Steel pipe after water cooling carries out sizing by being sequentially installed with the sizing unit of 5 groups of molds from front to back, every group on sizing unit Mold includes the upper/lower die and left and right mold of relative motion, and the upper/lower die and left and right mold of the 1st group to the 5th group mold surround The cavity wall radian of cavity is sequentially reduced, and the cavity wall radian that upper/lower die and left and right mold surround cavity in the 5th group of mold is 0, That is upper/lower die and the opposite face of left and right mould are plane in the 5th group of mold.Pipe passes through the extruding of 5 groups of molds successively from front to back Molding ultimately forms the shape tube that tube wall is straight flange, reaches the requirement of semitrailer guardrail, by the gradual of tube wall radian Change, avoids one-pass molding and cause the situation of tube wall stress unevenness, while ensure that the accuracy of shape tube cross sectional shape.
In each group mold Sizing Process, left and right mold and upper/lower die carry out extrusion forming to steel pipe simultaneously, then into Enter next group of mold and carry out extrusion forming, when to steel tube extrusion, the compressive plane of mold pastes every group of mold completely with steel pipe wall It closes, ensure that the straightness of steel pipe, improve shaping efficiency.It also carries and parts a little in Sizing Process, between the rack of sizing unit There is cut to avoid steel tube surface in Force system.
When horizontal frames hole type design different size, and dimension roll is replaced, substitute mode is being pressed in rack Lower device removes, then roll shafting is taken out from top.Turks-head roll roll and bearing, axis are integrated, only need to be whole by this Body dismounting is other replaceable corresponding rolls, and turks-head roll ontology need not move greatly.
Copying imitates the steel that type milling formula flying saw is cut into the continuous steel pipe after sizing specific length using numerical control Pipe.Steel pipe is cut into fixed length by 2 milling cutter head type cutting heads, and 2 milling heads are operated along the outer wheels profile of pipe, saw It cuts with 2 saw blades.When cutting, fly buck vehicle by direct current generator by gear, rack drives, steel pipe continuous production passes through increment type Encoder surveys length, and measuring motion is mounted on unit, and measuring roller is contacted with steel pipe, and the numerical value of measurement is transmitted to digital control system.Number It controls the startup point of system-computed trolley, acceleration curve, deceleration curve, maximum return speed and shows trolley operation curve, so as to System is set to be in optimal operational condition.Position and speed on trolley is also measured by an incremental encoder, is mounted on trolley Driving motor on, be transferred to digital control system, with accurately control driving to required cutting position on pipe, in cutting process The velocity variations of middle steel pipe do not influence control accuracy.
Runout table, by the steel pipe market of specific length after cutting to product collecting region.
Product is collected, by the steel pipe collecting of specific length, pile.
The production cost of the present embodiment is low, environmentally protective, and the self structure of straight seam welding steel tubes is stablized, each mechanicalness Energy intensity etc. is relatively high, and mould structure is simple, simplifies mold processing capacity, the few cooperation list between mold and roll mandrel of drop Member, while also improving the positioning accuracy of mold, that is, improve the molding qualification rate and performance of product.
It during being produced using the above method, needs repeatedly to replace mold, effect is replaced in order to improve Rate, while reducing equipment occupation space, it is filled using a kind of semitrailer guardrail Rollforming Shaped Tube die change in the present embodiment It sets comprising small car body 9 with wheel and the track box 10 being installed on the small car body, and it is installed in the track box On two-way hydraulic cylinder 3.
Two-way hydraulic cylinder 3 includes cylinder body and slips two pistons in cylinder body, and oriented both sides are respectively and fixedly connected on two-piston Hydraulic fluid port is respectively set on cylinder body corresponding with both sides rod chamber on the cylinder body between two-piston in the piston rod of stretching.Bidirectional hydraulic The both sides piston rod end of cylinder 3 is installed with electromagnet 2 respectively, and electromagnet 2 is equipped with towards the side of mold 1 and is adapted to mold side Protrusion.
Offer the skidway hole consistent with the piston rod direction of two-way hydraulic cylinder in track box, interposition in the skidway hole It sets and is installed with a baffle 4, being slipped respectively in the skidway hole of 4 both sides of the baffle has supporting beam 8, the surface of supporting beam and skidway hole The smooth setting of inner wall, to reduce frictional force between the two.
Supporting beam 8 is equipped with elastic barrier resetting apparatus 5, and supporting beam stretches out one end of skidway hole and elastic barrier resets dress The width for being not less than mold 1 the distance between is set, conllinear mold sliding slot is additionally provided in the supporting beam of both sides, mold is along mold Sliding slot move, ensure that left and right mold when mounted to positivity, save mould aligning adjustment time.
Preferably, the elastic barrier resetting apparatus 5 in the present embodiment includes hanging down with the piston rod of two-way hydraulic cylinder 3 The straight and cross bar affixed with supporting beam is arranged torsional spring 6 on the cross bar, and the block affixed with the spring body of the torsional spring 7, the spring silk both ends of the torsional spring 6 and supporting beam are affixed, and the block is T shapes, and the lower edge of block upper boss both sides is all provided with Circular arc chamfering is set, the distance of cross bar axis to block lower boss front and back sides is less than to the distance of upper surface of support beam, electromagnetism The front and rear edges of iron lower end also is provided with circular arc chamfering.
When electromagnet encounters block, since the force of sliding friction of supporting beam is smaller, torsional spring does not deform, supporting beam with It the stretching of piston rod and is stretched out to workbench, when supporting beam encounters workbench, piston rod continues to stretch out and make torsional spring Deformation, block rotates therewith under the action of chamfering, loses the barrier effect to electromagnet, and electromagnet is moved to after block At mold, electromagnet is attracted after being powered with mold, is equally that branch is first driven under the blocking of block during piston rod is retracted It supports beam to retract, after supporting beam is by baffle, electromagnet pushes block rotation and passes through block, and final piston rod contracts completely It returns.
Embodiment two
The difference between this embodiment and the first embodiment lies in elastic barrier resetting apparatus 5 includes hanging down with the piston rod of two-way hydraulic cylinder The straight and cross bar affixed with supporting beam, and it is arranged block 7 on the cross bar, the both sides of the block are respectively equipped with and prop up The spring 11 of beam connection is supportted, two springs are arranged in splayed, and the tie point of spring and block is higher than cross bar axis, and the block is T shapes, the lower edges of block upper boss both sides are respectively provided with circular arc chamfering, cross bar axis to block lower boss front and back sides away from From less than to a distance from upper surface of support beam, the front and rear edges of electromagnet lower end also is provided with circular arc chamfering.
When electromagnet does not touch block, the spring of both sides makes it keep equilibrium state, during piston rod stretching, electromagnetism When iron starts to brush up against block, since the force of sliding friction of supporting beam is smaller, spring does not deform, when supporting beam encounters workbench When, piston rod continues to stretch out and spring is made to deform, and baffle is taken advantage of a situation rotation, loses the barrier effect to electromagnet, electromagnet It is moved at mold after block, electromagnet is attracted after being powered with mold, is equally first to keep off during piston rod is retracted Supporting beam is driven to retract under the blocking of block, after supporting beam is by baffle, electromagnet pushes block rotation and passes through block, most Whole piston rod is fully retracted.
Certainly, above description is also not limited to the example above, technical characteristic of the present invention without description can by or It is realized using the prior art, details are not described herein;Above example and attached drawing are only used to illustrate the technical scheme of the present invention not It is limitation of the present invention, is described the invention in detail with reference to preferred embodiment, the ordinary skill people of this field Member is it should be appreciated that variation, remodeling, the addition that those skilled in the art are made in the essential scope of the present invention Or replace the claims that should also belong to the present invention without departure from spirit of the invention.

Claims (8)

1. a kind of semitrailer guardrail Rollforming Shaped Tube technique, it is characterised in that:
(1)Steel coil strip is unfolded for uncoiling;
(2)Leveling carries out leveling to the steel band after expansion, and steel band is conveyed toward next station;
(3)The head of steel band after leveling and tail portion are carried out shearing tack by tack and butt welding respectively, and will shear the steel after tack Strip tail welds together with the material head after next steel band shearing tack, and the steel band being welded is conveyed toward next station;
(4)It prestores, kink storage bin will be sent into welding steel band;
(5)Molding, the steel band in kink storage bin is sent to molding machine, bends to pipe to be welded gradually according to certain order Base;
(6)The both ends that pipe is connected to each other are squeezed and carry out high-frequency welding after forming certain angular aperture by high-frequency welding, and welding is completed Afterwards by tumbling rack the burr flattening-out of commissure;
(7)Water cooling is cooled to room temperature the steel pipe of high-frequency welding by spray mode;
(8)Special-shaped gradual change sizing carries out the steel pipe after water cooling by being sequentially installed with the sizing unit of 5 groups of molds from front to back Sizing, every group of mold on sizing unit include the upper/lower die and left and right mold of relative motion, the 1st group to the 5th group mold The cavity wall radian that upper/lower die and left and right mold surround cavity is sequentially reduced, and upper/lower die and left and right mold in the 5th group of mold The cavity wall radian for surrounding cavity is 0.
(9)Steel pipe cutting after sizing is specific length by copying;
(10)Runout table, by the steel pipe market of specific length after cutting to product collecting region;
(11)Product is collected, by the steel pipe collecting of specific length, pile.
2. a kind of semitrailer guardrail Rollforming Shaped Tube technique according to claim 1, it is characterised in that:The step (4)In, when steel band enters kink storage bin, steel band is deflected to by vertical state by import arrangement for deflecting, in kink storing Steel band is deflected to the outlet arrangement for deflecting of horizontality by the outlet setting in storehouse.
3. a kind of semitrailer guardrail Rollforming Shaped Tube technique according to claim 1, it is characterised in that:The step (5)In a graded refer to the two sides of steel band first being gone out into segmental arc to homonymy symmetrical molding, by being molded several times by both sides Segmental arc gradually lengthens, until the segmental arc of both sides formed to semicircle.
4. a kind of semitrailer guardrail Rollforming Shaped Tube technique according to claim 1, it is characterised in that:The step (9)In by the way that the measuring roller of incremental encoder is contacted and be equipped with steel pipe carry out survey length, cutting equipment obtains incremental encoding Cut-off is determined after the signal of device.
5. a kind of semitrailer guardrail Rollforming Shaped Tube die-changing apparatus, it is characterised in that:Including small car body(9)With it is fixed Track box on the small car body(10), and the two-way hydraulic cylinder that is installed on the track box(3), the bidirectional hydraulic Cylinder(3)Both sides piston rod end be installed with electromagnet respectively(2), the piston with two-way hydraulic cylinder is offered in the track box The consistent skidway hole in bar direction is installed with a baffle in the skidway hole(4), the baffle(4)In the skidway hole of both sides respectively It is sliding to have supporting beam(8), the supporting beam(8)It is equipped with elastic barrier resetting apparatus(5), one end of supporting beam stretching skidway hole The distance between elastic barrier resetting apparatus is not less than mold(1)Width, be additionally provided in the supporting beam of both sides conllinear Mold sliding slot.
6. a kind of semitrailer guardrail Rollforming Shaped Tube die-changing apparatus according to claim 5, it is characterised in that: The electromagnet(2)Towards mold(1)Side be equipped with the protrusion that is adapted to mold side.
7. a kind of semitrailer guardrail Rollforming Shaped Tube die-changing apparatus according to claim 5, it is characterised in that: The elastic barrier resetting apparatus(5)Including with two-way hydraulic cylinder(3)Piston rod is vertical and the cross bar affixed with supporting beam, set If torsional spring on the cross bar(6), and the block affixed with the spring body of the torsional spring(7), the torsional spring(6)Spring silk two End is affixed with supporting beam, and the block is T shapes, and the lower edge of block upper boss both sides is respectively provided with chamfering, cross bar axis to gear The distance of block lower boss front and back sides is less than to the distance of upper surface of support beam, and the front and rear edges of electromagnet lower end also is provided with down Angle.
8. a kind of semitrailer guardrail Rollforming Shaped Tube die-changing apparatus according to claim 5, it is characterised in that: The elastic barrier resetting apparatus(5)Include vertical with the piston rod of two-way hydraulic cylinder and affixed with supporting beam cross bar, and It is arranged block on the cross bar(7), the both sides of the block are respectively equipped with the spring being connect with supporting beam(11), the gear Block is T shapes, and the lower edges of block upper boss both sides is respectively provided with chamfering, cross bar axis to block lower boss front and back sides away from From less than to a distance from upper surface of support beam, the front and rear edges of electromagnet lower end also is provided with chamfering.
CN201810342962.3A 2018-04-17 2018-04-17 A kind of semitrailer guardrail Rollforming Shaped Tube technique and die-changing apparatus Withdrawn CN108526241A (en)

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CN108673058A (en) * 2018-04-17 2018-10-19 山东舜世高科实业有限公司 Automobile buffer beam straight seam welding Rollforming Shaped Tube technique and die-changing apparatus
CN108687161A (en) * 2018-04-17 2018-10-23 山东舜世高科实业有限公司 A kind of splitting Oil cylinder shape tube moulding process and die-changing apparatus
CN113732126A (en) * 2021-08-26 2021-12-03 燕山大学 Cold roll forming method of welded pipe

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CN113732126A (en) * 2021-08-26 2021-12-03 燕山大学 Cold roll forming method of welded pipe

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