CN108673058A - Automobile buffer beam straight seam welding Rollforming Shaped Tube technique and die-changing apparatus - Google Patents
Automobile buffer beam straight seam welding Rollforming Shaped Tube technique and die-changing apparatus Download PDFInfo
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- CN108673058A CN108673058A CN201810342933.7A CN201810342933A CN108673058A CN 108673058 A CN108673058 A CN 108673058A CN 201810342933 A CN201810342933 A CN 201810342933A CN 108673058 A CN108673058 A CN 108673058A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The present invention relates to a kind of automobile buffer beam straight seam welding 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
Technical field
The present invention relates to steel pipe forming technical field more particularly to a kind of automobile buffer beam straight seam welding steel tubes
Moulding process 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, straight seam welding steel tubes therein
It is widely used in automotive frame, automobile decoration, pendent lamp penetration pipe, tea table supporting leg etc., has reached different using effects.
But the production technology of current straight seam welding steel tubes is complex, causes it higher at production cost, not meeting market needs
It seeks development trend；And current production technology is cumbersome when carrying out die change, 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 automobile buffer beam straight seam welding Rollforming Shaped Tube techniques
And die-changing apparatus, production cost is reduced, and improve production efficiency, and keep die change more quick.
The present invention is achieved through the following technical solutions, provide a kind of automobile buffer beam straight seam welding steel tubes at
Type 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 equipped with the sizing unit of upper/lower die and left and right mold
Sizing, upper/lower die fastens the cavity cross section shape to be formed and left and right mold fasten the cavity cross section shape to be formed with it is different
The section of type pipe is identical, and when sizing, left and right mold and upper/lower die alternately squeeze steel pipe, until steel pipe wall with it is left
Right mould has or upper/lower die fastens the cavity to be formed and is bonded completely, and in Sizing Process, Minimal Tension is carried between the rack of sizing unit
There is cut to avoid steel tube surface in system；
（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 automobile buffer beam straight seam welding Rollforming Shaped Tube die-changing apparatus, including small car body and it is installed in institute
The track box on small car body is stated, and the two-way hydraulic cylinder being installed on the track box, the both sides of the two-way hydraulic cylinder are lived
Stopper rod end is installed with electromagnet respectively, and the slideway consistent with the piston rod direction of two-way hydraulic cylinder is offered in the track box
Hole is installed with a baffle in the skidway hole, and being slipped respectively in the skidway hole of the baffle both sides has supporting beam, the supporting beam
It is equipped with elastic barrier resetting apparatus, one end of supporting beam stretching skidway hole and the distance between elastic barrier resetting apparatus be not small
In the width of mold, 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 final
The shape and structure of special-shaped product carry out secondary cold-bending molding technology, and forming process is uniform, and coaxial speed ratio is small, are not likely to produce and draw
Wound, product surface quality is good, also improves the molding qualification rate and performance of product；The die-changing apparatus used when production can incite somebody to action
Left and right mold pushes in place simultaneously, and ensure that positivity, improve die change efficiency, ensure that high molding qualification
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 22 is pipe gradual change shape tube first of the present invention to the 9th frame shaping schematic view；
Figure 23 ~ Figure 31 is pipe gradual change shape tube first of the present invention to the corresponding mold squeezed state schematic diagram of the 9th frame；
Figure 32 is the die-changing apparatus structural schematic diagram in the embodiment of the present invention one；
Figure 33 is the die-changing apparatus structural schematic diagram in the embodiment of the present invention two；
Figure 34 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 automobile buffer beam straight seam welding 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 equipped with the sizing unit of upper/lower die and left and right mold, and upper/lower die, which fastens, to be formed
It is identical as the section of shape tube that cavity cross section shape and left and right mold fasten the cavity cross section shape to be formed, left when sizing
Right mould has and upper/lower die alternately squeezes steel pipe, and left and right mold or upper/lower die do not act primary, steel pipe and each mould
The compactness of tool increases a part, until steel pipe wall fastens the cavity to be formed with left and right mold or upper/lower die and is bonded completely,
Sizing Process gradually carries out, and avoids a direction one-pass molding and is damaged caused by tube wall and inhomogeneities, also avoids steel
Tube wall occurs carrying out the dynamic situation of inflection, ensure that the intensity of tube wall.It 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, a kind of automobile buffer beam straight seam welding Rollforming Shaped Tube mould is used in the present embodiment
Have more changing device comprising small car body 9 with wheel and the track box 10 being installed on the small car body, and it is installed in institute
State the two-way hydraulic cylinder 3 on track box.
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 automobile buffer beam straight seam welding 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 equipped with the sizing unit of upper/lower die and left and right mold
Sizing, upper/lower die fastens the cavity cross section shape to be formed and left and right mold fasten the cavity cross section shape to be formed with it is different
The section of type pipe is identical, and when sizing, left and right mold and upper/lower die alternately squeeze steel pipe, until steel pipe wall with it is left
Right mould has or upper/lower die fastens the cavity to be formed and is bonded completely；
（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. automobile buffer beam according to claim 1 straight seam welding Rollforming Shaped Tube technique, it is characterised in that：It is described
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
Steel band is deflected to the outlet arrangement for deflecting of horizontality by the outlet setting of storage bin.
3. automobile buffer beam according to claim 1 straight seam welding Rollforming Shaped Tube technique, it is characterised in that：It is described
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 two
The segmental arc of side gradually lengthens, until the segmental arc of both sides formed to semicircle.
4. automobile buffer beam according to claim 1 straight seam welding Rollforming Shaped Tube technique, it is characterised in that：It is described
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 increment
Cut-off is determined after the signal of encoder.
5. a kind of automobile buffer beam straight seam welding Rollforming Shaped Tube die-changing apparatus, it is characterised in that：Including small car body
（9）With the track box being installed on the small car body（10）, and the two-way hydraulic cylinder that is installed on the track box（3）, institute
State two-way hydraulic cylinder（3）Both sides piston rod end be installed with electromagnet respectively（2）, offer and two-way liquid in the track box
The consistent skidway hole in the piston rod direction of cylinder pressure is installed with a baffle in the skidway hole（4）, the baffle（4）The cunning of both sides
Being slipped respectively in road hole has supporting beam（8）, the supporting beam（8）It is equipped with elastic barrier resetting apparatus（5）, supporting beam, which is stretched out, to be slided
The distance between the one end in road hole and elastic barrier resetting apparatus are not less than mold（1）Width, in the supporting beam of both sides also
Equipped with 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.
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| CN201810342933.7A CN108673058B (en) | 2018-04-17 | 2018-04-17 | Automobile buffer beam straight seam welding Rollforming Shaped Tube technique and die-changing apparatus |
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| CN201810342933.7A CN108673058B (en) | 2018-04-17 | 2018-04-17 | Automobile buffer beam straight seam welding Rollforming Shaped Tube technique and die-changing apparatus |
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