CN114289543B - Extrusion molding method and device for refined straight angle steel keels - Google Patents
Extrusion molding method and device for refined straight angle steel keels Download PDFInfo
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- CN114289543B CN114289543B CN202111623790.5A CN202111623790A CN114289543B CN 114289543 B CN114289543 B CN 114289543B CN 202111623790 A CN202111623790 A CN 202111623790A CN 114289543 B CN114289543 B CN 114289543B
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- 238000001125 extrusion Methods 0.000 title claims abstract description 163
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 98
- 239000010959 steel Substances 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 65
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 230000000712 assembly Effects 0.000 claims abstract description 4
- 238000000429 assembly Methods 0.000 claims abstract description 4
- 230000001360 synchronised effect Effects 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 10
- 238000000137 annealing Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 description 5
- 239000000758 substrate Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 229910001566 austenite Inorganic materials 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The utility model relates to an extrusion molding method and extrusion molding equipment for a refined straight angle steel keel, which sequentially comprise a pushing device, a first conveying frame, a first electromagnetic induction heating device, a first U-shaped frame, a second conveying frame, a second electromagnetic induction heating device, a second U-shaped frame and a third conveying frame along the direction of a production line; the second U-shaped frame and the first U-shaped frame are internally provided with extrusion assemblies which are used for extrusion molding of finished pipes with different sizes and have the same structure, and the third conveying frame is internally provided with a constraint assembly which is used for constraint of right-angle steel pipes after two times of thermal deformation extrusion molding; the problems that deformation is easy to occur to a steel pipe formed by extrusion by the existing extrusion forming method, the corners are easy to crack, the using effect of the steel pipe is affected, extrusion forming equipment in the prior art cannot regulate and control the extrusion size of the steel pipe, and the production and manufacturing cost is increased are solved.
Description
Technical Field
The utility model belongs to the technical field of curtain walls, and relates to an extrusion molding method and extrusion molding equipment for a refined straight angle steel keel.
Background
The existing large-span curtain wall generally adopts an aluminum-clad steel curtain wall system, but the precision control, the appearance quality and the production period of the welding steel square tubes adopted by the existing aluminum-clad steel curtain wall can not completely meet the engineering requirements of the large-span curtain wall.
The research and development of the refined straight angle steel keel can solve the problem of a large-span curtain wall system, can also meet the appearance requirements of architects, has a heavy style, has more color decoration choices, and becomes the necessity of social development. In the prior art, when the round steel pipe is extruded, the round steel pipe is directly extruded through the fixed die, and when the extrusion size needs to be changed, the extrusion grinding tool needs to be replaced again. Therefore, the extruded size of the steel pipe cannot be freely regulated, the steel pipe is required to be heated and extruded once again, uncontrollable deformation or cracking and the like of the extruded steel pipe are easy to occur, and the product cannot be suitable for curtain wall engineering.
Disclosure of Invention
In view of the above, the utility model provides a refined straight angle steel keel extrusion molding method and extrusion molding equipment, which aims to solve the problems that the steel pipe extruded by the existing extrusion molding method is easy to deform uncontrollably, corners are easy to crack and influence the use effect, and extrusion molding equipment in the prior art cannot regulate the extrusion size of the steel pipe and increase the production cost.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
an extrusion molding method of a refined straight angle steel keel comprises the following steps:
s1, selecting a high-frequency welded pipe base material according to requirements, wherein the carbon content of the high-frequency welded pipe base material is less than or equal to 0.2%;
s2, annealing the high-frequency welded pipe base material, heating the high-frequency welded pipe base material to 650-720 ℃ at the annealing temperature of 50 ℃/h, preserving heat for 3h, then reducing the temperature downwards at the speed of 50 ℃/h in an annealing furnace, cooling the high-frequency welded pipe base material to 300+/-20 ℃ in the furnace, discharging the high-frequency welded pipe base material from the furnace, and cooling the high-frequency welded pipe base material to a natural temperature in the air;
s3, cold deforming and extruding the annealed high-frequency welded pipe base material to form a finished pipe, and then stretching and straightening;
s4, performing thermal deformation extrusion on the finished product pipe subjected to stretching and straightening in an extruder for two times to form a right-angle steel pipe, wherein the first medium-frequency heating temperature is 900+/-50 ℃, the extrusion temperature is 850+/-30 ℃, the finished product pipe is extruded to form the right-angle steel pipe, the second medium-frequency heating temperature is 700+/-50 ℃, and four right angles of the right-angle steel pipe are further corrected and residual stress is eliminated;
s5, performing end sawing on the right-angle steel pipe subjected to the twice thermal deformation extrusion, and performing four-angle polishing and fixed-length sawing on the right-angle steel pipe subjected to the end sawing.
And further, the high-frequency welded pipe base material is subjected to cold deformation extrusion in the step S3 to form a rectangular pipe with the bending R angle being more than 2T (T is the wall thickness of the high-frequency welded pipe).
Further, the section of the right-angle steel pipe after sawing the end head in the step S5 is rectangular or parallelogram.
The extrusion molding equipment for the refined straight angle steel keels sequentially comprises a pushing device, a first conveying frame, a first electromagnetic induction heating device, a first U-shaped frame, a second conveying frame, a second electromagnetic induction heating device, a second U-shaped frame and a third conveying frame along the direction of a production line; the second U-shaped frame and the first U-shaped frame are internally provided with extrusion assemblies which are used for extrusion molding of finished pipes with different sizes and have the same structure, and the third conveying frame is internally provided with a constraint assembly which is used for constraint of right-angle steel pipes after two times of thermal deformation extrusion molding;
the extrusion assembly comprises a workbench, wherein the top of the workbench is provided with first grooves and second grooves which are arranged in a cross manner, two first rotating rollers are transversely connected in the first grooves in a rotating manner, a screw rod positioned in the second grooves is rotationally connected to the first U-shaped frame, two symmetrical sliding frames are slidingly connected to the top of the workbench, two first extrusion rollers are rotationally connected to the sliding frames, two nut blocks are slidingly connected to the second grooves, the top ends of the nut blocks are fixedly connected with the bottom of the sliding frame, one end of the screw rod is threaded through the nut blocks, and one end of the screw rod extends to one side of the first U-shaped frame or one side of the second U-shaped frame and is fixedly connected with a first bevel gear; the outer side of the first U-shaped frame or the second U-shaped frame is fixedly connected with a driving motor, an output shaft of the driving motor is fixedly connected with a rotary round rod, a second bevel gear meshed with the first bevel gear is fixedly sleeved on the outer wall of the rotary round rod, a first synchronous wheel is fixedly connected with the top of the rotary round rod, a screw rod penetrates through the top of the first U-shaped frame, a second synchronous wheel rotationally connected with the top of the first U-shaped frame is sleeved on the outer wall of the screw rod in a threaded manner, the first synchronous wheel is connected with the second synchronous wheel in a transmission manner through a synchronous belt, the bottom end of the screw rod extends into the first U-shaped frame and is fixedly connected with an extrusion frame, two second extrusion rollers are rotationally connected in the extrusion frame, sliding plates are connected to the inner wall of one side, which is far away from each other, of the two sliding plates are fixedly connected with the extrusion frame, and one ends, which are close to each other.
Further, the constraint assembly comprises a plurality of first conveying rollers which are rotatably connected in a third conveying frame, the top of the third conveying frame is fixedly connected with two symmetrical fixing frames, a plurality of rotating shafts are rotatably connected with the fixing frames, and the top ends of the rotating shafts extend to the upper part of the fixing frames and are fixedly connected with first bevel gears; the top of two mounts is equal fixedly connected with fixed plate, one side that two fixed plates are close to each other rotates and is connected with a plurality of pivots, the fixed cover of outer wall of pivot is equipped with the third squeeze roller, the fixed cover of outer wall of pivot is equipped with two symmetrical second bevel gears, and the second bevel gear meshes with first bevel gear mutually, the one end of a plurality of pivots all extends to one side of fixed plate and equal fixedly connected with sprocket, connect through chain drive between a plurality of sprockets, the top fixedly connected with of mount places the board, place the top fixedly connected with rotation motor of board, rotation motor's output shaft and one of them sprocket fixed connection.
Further, the top fixedly connected with annular slide rail of first U type frame, the bottom fixedly connected with of second synchronizing wheel a plurality of annular sliders, and arc slider and annular slide rail sliding fit.
Further, one side fixedly connected with two backup pads of first U type frame, and rotate the top of round bar and run through two backup pads, can support the round bar of rotation through the backup pad.
Further, the axes of the third extrusion roller, the first constraint roller and the first conveying roller are intersected to form a rectangle, and further the right-angle steel pipe surface can be uniformly constrained through the cooperation of the third extrusion roller, the first constraint roller and the first conveying roller.
Further, a plurality of second conveying rollers are rotatably connected in the first conveying frame and the second conveying frame.
Further, the top fixedly connected with two symmetrical air-movers of third carriage, one side that two mounts kept away from each other all is equipped with a plurality of through-holes, when receiving the constraint to the right angle steel pipe after the extrusion in the third carriage, starts the air-movers, and the air-movers can blow to the right angle steel pipe after the extrusion through the through-hole, and then control right angle steel pipe cooling rate temperature, makes the right angle steel reach predetermined mechanical properties.
The utility model has the beneficial effects that:
1. according to the refined straight angle steel keel extrusion molding equipment disclosed by the utility model, the first U-shaped frame and the first electromagnetic induction heating device are arranged, so that a finished pipe can be initially extruded and molded in the first U-shaped frame, final extrusion and molding can be conveniently finished in the second U-shaped frame in the later period, and the finished pipe is always in a state of austenite in the process of extruding the finished pipe into a right-angle steel pipe by twice thermal deformation extrusion; prevent the angle part of the steel pipe after extrusion forming from cracking and influencing the use effect.
2. According to the refined straight angle steel keel extrusion molding equipment disclosed by the utility model, the rotating round rod is driven to rotate by the starting driving motor, the first bevel gear is driven to rotate along with the second bevel gear, the two nut blocks respectively drive the sliding frame and the first extrusion rollers to move towards the middle, the finished product pipe is primarily transversely extruded by the two first extrusion rollers, the rotating round rod drives the first synchronous wheel to rotate, the first synchronous wheel drives the screw to rotate by the first electromagnetic induction heating device and the synchronous belt, the screw drives the extrusion frame and the second extrusion rollers to move downwards under the rotation of the second synchronous wheel, the finished product pipe is primarily extruded in the vertical direction by the second extrusion rollers, and the size of the extruded finished product pipe can be adjusted according to the requirement by the cooperation of the second extrusion rollers and the two first extrusion rollers.
3. According to the refined straight angle steel keel extrusion molding equipment disclosed by the utility model, one sprocket wheel is driven to rotate by starting the rotating motor, one sprocket wheel can drive the other sprocket wheels to rotate through the chain, all the rotating shafts and the second bevel gears can be driven to rotate simultaneously, when the third extrusion roller rotates, the first bevel gear can drive the rotating shafts and the first constraint roller to rotate, the first constraint roller, the first conveying roller and the third extrusion roller are mutually matched to constrain the right-angle steel pipe, the right-angle steel pipe is conveyed to the left side, and deformation of the extruded right-angle steel pipe in the conveying process is avoided.
4. According to the extrusion molding equipment for the refined straight angle steel keel, disclosed by the utility model, the extruded right angle steel pipe is restrained in the third conveying frame, the blower is started, and the blower can blow air to the extruded right angle steel pipe through the through hole, so that the cooling speed and the cooling temperature of the right angle steel pipe are controlled, and the right angle steel achieves the preset mechanical property.
5. According to the extrusion molding equipment for the refined straight angle steel keel, disclosed by the utility model, the finished pipe is extruded in a state of being always in a state of being in austenite in the process of being extruded into the right-angle steel pipe by twice thermal deformation, so that the corner of the extruded finished pipe cannot crack; and in the extrusion process of the finished product pipe, the rotary round rod is driven to rotate by the starting driving motor, the extrusion size of the finished product pipe can be adjusted, the extrusion grinding tool is not required to be replaced, the extrusion grinding tool is simple and convenient, and after the final extrusion is finished, the right-angle steel pipe can be restrained through the mutual cooperation of the first restraint roller, the first conveying roller and the third extrusion roller, so that the deformation of the right-angle steel pipe in the later stage is avoided.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in the following preferred detail with reference to the accompanying drawings, in which:
fig. 1 is a front cross-sectional view of the refined straight angle steel keel extrusion molding device of the utility model;
FIG. 2 is a view along the direction A of a first U-shaped frame in the extrusion molding equipment of the refined straight angle steel keel;
FIG. 3 is a three-dimensional view of the extrusion assembly of the refined straight angle steel keel extrusion molding apparatus of the present utility model;
FIG. 4 is a three-dimensional cross-sectional view of a first U-shaped frame in the refined straight angle steel keel extrusion molding device of the utility model;
fig. 5 is a three-dimensional view of the arrangement of the first groove and the second groove in the extrusion molding device of the refined straight angle steel keel;
fig. 6 is a three-dimensional view of a restraint assembly in a refined straight angle steel keel extrusion molding apparatus according to an embodiment of the utility model;
fig. 7 is a view along direction B of a restraint assembly in a refined straight angle steel keel extrusion molding apparatus according to an embodiment of the utility model;
fig. 8 is a side view of a restraint assembly in a second embodiment of the present utility model, a refined straight angle keel extrusion apparatus.
Reference numerals: 1. a first U-shaped frame; 2. a first electromagnetic induction heating device; 3. a first carriage; 4. a pushing device; 5. a second carriage; 6. a second U-shaped frame; 7. a second electromagnetic induction heating device; 8. a third carriage; 9. a work table; 10. a first groove; 11. a first rotating roller; 12. a second groove; 13. a screw rod; 14. a carriage; 15. a first squeeze roll; 16. a nut block; 17. a first bevel gear; 18. a driving motor; 19. rotating the round rod; 20. a second bevel gear; 21. a first synchronizing wheel; 22. a screw; 23. a second synchronizing wheel; 24. a synchronous belt; 25. an extrusion frame; 26. a second squeeze roll; 27. a sliding plate; 28. a first conveying roller; 29. a fixing frame; 30. a first constraining roll; 31. a rotating shaft; 32. a first bevel gear; 33. a fixing plate; 34. a rotating shaft; 35. a third squeeze roll; 36. a second bevel gear; 37. a sprocket; 38. a chain; 39. placing a plate; 40. a rotating motor; 41. a second conveying roller; 42. a support plate; 43. a through hole; 44. a blower.
Detailed Description
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present utility model by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the utility model; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but not for indicating or suggesting that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present utility model, and that the specific meaning of the above terms may be understood by those of ordinary skill in the art according to the specific circumstances.
An extrusion molding method of a refined straight angle steel keel comprises the following steps:
s1, selecting a high-frequency welded pipe base material according to requirements, wherein the carbon content of the high-frequency welded pipe base material is less than or equal to 0.2%; the base material of the high-frequency welded pipe is a Q235B hot rolled steel plate, and the base material is selected strictly according to the national standard of carbon structural steel GB/T700-2006; the high-frequency welded pipe base material needs to be subjected to mechanical property detection and flaw detection.
S2, annealing the high-frequency welded pipe base material, so as to eliminate cold work hardening phenomenon, recover crystals, improve the ductility of metal and facilitate the development of the following related extrusion process; heating the high-frequency welded pipe substrate at 50 ℃/h to 650 ℃, preserving heat for 3h, then reducing the temperature in an annealing furnace at 50 ℃/h, cooling the substrate to 300 ℃ in the furnace, discharging the substrate, and cooling the substrate to a natural temperature in air; the highest temperature should not exceed 727 ℃, otherwise, the temperature is reduced and the crystals are separated out, so that the performance of the steel is changed, and a temperature curve chart is provided after each annealing treatment is finished.
S3, cold deforming and extruding the annealed high-frequency welded pipe base material to form a finished pipe, and then stretching and straightening; the high-frequency welded tube base material is subjected to cold deformation extrusion to form a rectangular tube with a bending R angle larger than 2T (T is the wall thickness of the high-frequency welded tube), so that subsequent hot extrusion deformation can be conveniently carried out.
S4, performing thermal deformation extrusion on the finished pipe subjected to stretching and straightening in an extruder for two times to form a right-angle steel pipe, wherein the first intermediate frequency heating temperature is 900 ℃, the extrusion temperature is 880 ℃, the finished pipe is extruded to form the right-angle steel pipe, the second intermediate frequency heating temperature is 700 ℃, and four right angles of the right-angle steel pipe are further corrected and residual stress is eliminated; the mechanical property detection and the chemical property detection of the finished steel are required, and the whole production process is tracked and checked.
S5, performing end sawing on the right-angle steel pipe subjected to the twice thermal deformation extrusion, and performing four-angle polishing and fixed-length sawing on the right-angle steel pipe subjected to the end sawing; the section of the right-angle steel pipe after the end sawing is rectangular or parallelogram. When sawing the end, the cutting surface of the end should be flush, and uneven phenomenon is avoided; the phenomenon of end leakage cutting caused by extrusion damage is avoided. When four corners are polished, the four corners are polished uniformly, and no uneven phenomenon exists; there is no uneven corner and no polishing leakage. When sawing to a fixed length, the tangential surfaces of the end heads should be flush, and no uneven phenomenon is caused; the phenomenon of end leakage cutting caused by extrusion damage is avoided. And (3) carrying out chemical component detection, mechanical tensile property test and impact property test on the right-angle steel pipe subjected to the fixed-length sawing. The tensile strength is 355-500 Mpa, the yield strength is more than or equal to 210Mpa, the elongation after breaking is more than or equal to 25%, and the energy absorption of 20 ℃ impact test is more than 27J.
Example 1
The refined straight angle steel keel extrusion molding equipment shown in figures 1-7 comprises a first U-shaped frame 1, wherein one side of the first U-shaped frame 1 is provided with a first electromagnetic induction heating device 2, one side of the first electromagnetic induction heating device 2 away from the first U-shaped frame 1 is provided with a first conveying frame 3, one side of the first conveying frame 3 away from the first electromagnetic induction heating device 2 is provided with a pushing device 4 positioned above the first conveying frame 3, one side of the first U-shaped frame 1 away from the first electromagnetic induction heating device 2 is provided with a second conveying frame 5, a plurality of second conveying rollers 41 are respectively and rotatably connected in the second conveying frame 5 and the first conveying frame 3, one side of the second conveying frame 5 away from the first U-shaped frame 1 is provided with a second electromagnetic induction heating device 7, one side of the second electromagnetic induction heating device 7 away from the second conveying frame 5 is provided with a second U-shaped frame 6, a third conveying frame 8 is arranged on one side of the second U-shaped frame 6 far away from the second electromagnetic induction heating device 7, extrusion components for extrusion forming of finished pipes are arranged in the second U-shaped frame 6 and the first U-shaped frame 1, a constraint component for constraint of right-angle steel pipes after extrusion forming is arranged in the third conveying frame 8, the top of the first U-shaped frame 1 is fixedly connected with an annular sliding rail through bolts, the bottom of the second synchronous wheel 23 is fixedly connected with a plurality of annular sliding blocks through bolts, the arc sliding blocks are in sliding fit with the annular sliding rail, two supporting plates 42 are fixedly connected on one side of the first U-shaped frame 1 through bolts, the top ends of the rotary round rods 19 are rotated to penetrate through the two supporting plates 42, the rotary round rods 19 can be supported through the supporting plates 42, the rotary round rods 19 are driven to rotate through the starting driving motor 18, the first bevel gears 17 are driven to rotate along with the second bevel gears 20, the two nut blocks 16 respectively drive the sliding frame 14 and the first extrusion rollers 15 to move towards the middle, the finished pipe is primarily transversely extruded through the two first extrusion rollers 15, the rotating round rod 19 drives the first synchronous wheel 21 to rotate, the first synchronous wheel 21 drives the screw rod 22 to rotate through the first electromagnetic induction heating device 2 and the synchronous belt 24, the screw rod 22 drives the extrusion frame 25 and the second extrusion rollers 26 to move downwards under the rotation of the second synchronous wheel 23, the finished pipe is primarily extruded in the vertical direction through the second extrusion rollers 26, the finished pipe can be extruded through the cooperation of the second extrusion rollers 26 and the two first extrusion rollers 15, and the extrusion size of the finished pipe can be adjusted according to requirements.
In the utility model, the extrusion component comprises a workbench 9 fixedly connected in a first U-shaped frame 1 through bolts, a first groove 10 and a second groove 12 which are arranged in a cross staggered manner are arranged at the top of the workbench 9, two first rotating rollers 11 are transversely and rotatably connected in the first groove 10, a screw rod 13 positioned in the second groove 12 is rotatably connected in the first U-shaped frame 1, two symmetrical sliding frames 14 are slidingly connected at the top of the workbench 9, two first extrusion rollers 15 are rotatably connected in the sliding frames 14, two nut blocks 16 are slidingly connected in the second groove 12, the top ends of the nut blocks 16 are fixedly connected with the bottom of the sliding frames 14 through bolts, one end of the screw rod 13 penetrates through the nut blocks 16 in a threaded manner, one end of the screw rod 13 extends to one side of the first U-shaped frame 1 and is fixedly connected with a first bevel gear 17, one side of the first U-shaped frame 1 is fixedly connected with a driving motor 18 through bolts, the output shaft of the driving motor 18 is fixedly connected with a rotary round rod 19 through a coupler, a second bevel gear 20 meshed with the first bevel gear 17 is fixedly sleeved on the outer wall of the rotary round rod 19, a first synchronizing wheel 21 is fixedly connected with the top of the rotary round rod 19, a screw rod 22 penetrates through the top of the first U-shaped frame 1, a second synchronizing wheel 23 rotatably connected with the top of the first U-shaped frame 1 is sleeved on the outer wall of the screw rod 22 through threads, the first synchronizing wheel 21 and the second synchronizing wheel 23 are in transmission connection through a synchronous belt 24, the bottom end of the screw rod 22 extends into the first U-shaped frame 1 and is fixedly connected with an extrusion frame 25 through bolts, two second extrusion rollers 26 are rotationally connected in the extrusion frame 25, sliding plates 27 are connected to the inner walls of one sides of the first U-shaped frame 1 which are far away from each other in a sliding manner, one ends of the two sliding plates 27 which are close to each other are fixedly connected with the extrusion frame 25 through bolts, the rotary round rod 19 is driven to rotate by starting the driving motor 18, the first bevel gear 17 is driven to rotate along with the second bevel gear 20, the sliding frame 14 and the first extrusion rollers 15 are respectively driven by the two nut blocks 16 to move towards the middle, the finished pipe is primarily transversely extruded by the two first extrusion rollers 15, the first synchronous wheel 21 is driven to rotate by the rotary round rod 19, the first synchronous wheel 21 drives the screw 22 to rotate by the first electromagnetic induction heating device 2 and the synchronous belt 24, the extrusion frame 25 and the second extrusion rollers 26 are driven to move downwards under the rotation of the second synchronous wheel 23, the finished pipe is primarily extruded in the vertical direction by the second extrusion rollers 26, the finished pipe can be extruded by the cooperation of the second extrusion rollers 26 and the two first extrusion rollers 15, and the extrusion size of the finished pipe can be adjusted according to requirements.
According to the utility model, the restraint assembly comprises a plurality of first conveying rollers 28 which are rotationally connected in a third conveying frame 8, two symmetrical fixing frames 29 are fixedly connected to the top of the third conveying frame 8 through bolts, a plurality of rotating shafts 31 are rotationally connected to one side of the fixing frames 29 through bolts, the top ends of the rotating shafts 31 extend to the upper side of the fixing frames 29 and are fixedly connected with first bevel gears 32, the tops of the two fixing frames 29 are fixedly connected with fixing plates 33 through bolts, one side of each fixing plate 33 is rotationally connected with a plurality of rotating shafts 34, a third squeeze roller 35 is fixedly sleeved on the outer wall of each rotating shaft 34, two symmetrical second bevel gears 36 are fixedly sleeved on the outer wall of each rotating shaft 34, the second bevel gears 36 are meshed with the first bevel gears 32, one ends of the plurality of rotating shafts 34 are all extended to one side of each fixing plate 33 and are fixedly connected with chain wheels 37 through chains 38 in a transmission mode, the tops of the fixing frames 29 are fixedly connected with placing plates 39 through bolts, the tops of the placing plates 39 are fixedly connected with rotating motors 40 through bolts, an output shaft of one rotating motor 40 is fixedly connected with one of the rotating motors 37, one rotating shaft 37 is rotationally driven by the rotating shafts 37, and can be driven by the chain wheels 37 to rotate through the corresponding chain wheels 37 to the right angle wheels 37, and can be driven by the chain wheels 37 to rotate to form right angles through the chain wheels 37, and then the right angle rollers 30 and the right angle rollers can be driven to rotate and the right angle rollers 30 to be constrained to rotate, and can be deformed to the right angle roller pair and rotate, and can be driven by the right angle roller pair to the second roller 35 to rotate and the right angle roller to rotate.
In the present utility model, the axes of the third squeeze roller 35, the first constraining roller 30 and the first conveying roller 28 intersect to form a rectangle, and further, the right-angle steel pipe surface can be uniformly constrained by the cooperation of the third squeeze roller 35, the first constraining roller 30 and the first conveying roller 28.
In the present utility model, the first electromagnetic induction heating apparatus 2 and the second electromagnetic induction heating apparatus 7 are both electromagnetic induction heating apparatuses of the utility model of CN 212992641U.
In the present utility model, the pushing device 4 is the pushing device 4 of the utility model with the publication number CN 214424130U.
Example two
As a further improvement of the previous embodiment, as shown in fig. 1-8, the refined straight angle steel keel extrusion molding device comprises a first U-shaped frame 1, wherein a first electromagnetic induction heating device 2 is arranged on one side of the first U-shaped frame 1, a first conveying frame 3 is arranged on one side of the first electromagnetic induction heating device 2 away from the first U-shaped frame 1, a pushing device 4 positioned above the first conveying frame 3 is arranged on one side of the first conveying frame 3 away from the first electromagnetic induction heating device 2, a second conveying frame 5 is arranged on one side of the first U-shaped frame 1 away from the first electromagnetic induction heating device 2, a plurality of second conveying rollers 41 are rotatably connected in each of the second conveying frame 5 and the first conveying frame 3, a second electromagnetic induction heating device 7 is arranged on one side of the second conveying frame 5 away from the first U-shaped frame 1, a second U-shaped frame 6 is arranged on one side of the second electromagnetic induction heating device 7 away from the second conveying frame 5, a third conveying frame 8 is arranged on one side of the second U-shaped frame 6 far away from the second electromagnetic induction heating device 7, extrusion assemblies for extrusion forming of finished pipes are arranged in the second U-shaped frame 6 and the first U-shaped frame 1, a constraint assembly for constraint of right-angle steel pipes after extrusion forming is arranged in the third conveying frame 8, the top of the first U-shaped frame 1 is fixedly connected with an annular sliding rail through bolts, the bottom of the second synchronous wheel 23 is fixedly connected with a plurality of annular sliding blocks through bolts, the arc sliding blocks are in sliding fit with the annular sliding rail, two supporting plates 42 are fixedly connected on one side of the first U-shaped frame 1 through bolts, the top ends of the rotary round rods 19 are rotated to penetrate through the two supporting plates 42, the rotary round rods 19 can be supported through the supporting plates 42, the rotary round rods 19 are driven to rotate through the starting driving motor 18, along with the rotation of the first bevel gear 17 driven by the second bevel gear 20, the two nut blocks 16 respectively drive the sliding frame 14 and the first extrusion rollers 15 to move towards the middle, the two first extrusion rollers 15 primarily transversely extrude the finished pipe, the rotating round rod 19 drives the first synchronous wheel 21 to rotate, the first synchronous wheel 21 drives the screw rod 22 to rotate through the first electromagnetic induction heating device 2 and the synchronous belt 24, the screw rod 22 drives the extrusion frame 25 and the second extrusion rollers 26 to move downwards under the rotation of the second synchronous wheel 23, the second extrusion rollers 26 primarily extrude the finished pipe in the vertical direction, the second extrusion rollers 26 and the two first extrusion rollers 15 cooperate to extrude the finished pipe, and the extruding size of the finished pipe can be adjusted according to requirements.
In the utility model, the extrusion component comprises a workbench 9 fixedly connected in a first U-shaped frame 1 through bolts, a first groove 10 and a second groove 12 which are arranged in a cross staggered manner are arranged at the top of the workbench 9, two first rotating rollers 11 are transversely and rotatably connected in the first groove 10, a screw rod 13 positioned in the second groove 12 is rotatably connected in the first U-shaped frame 1, two symmetrical sliding frames 14 are slidingly connected at the top of the workbench 9, two first extrusion rollers 15 are rotatably connected in the sliding frames 14, two nut blocks 16 are slidingly connected in the second groove 12, the top ends of the nut blocks 16 are fixedly connected with the bottom of the sliding frames 14 through bolts, one end of the screw rod 13 penetrates through the nut blocks 16 in a threaded manner, one end of the screw rod 13 extends to one side of the first U-shaped frame 1 and is fixedly connected with a first bevel gear 17, one side of the first U-shaped frame 1 is fixedly connected with a driving motor 18 through bolts, the output shaft of the driving motor 18 is fixedly connected with a rotary round rod 19 through a coupler, a second bevel gear 20 meshed with the first bevel gear 17 is fixedly sleeved on the outer wall of the rotary round rod 19, a first synchronizing wheel 21 is fixedly connected with the top of the rotary round rod 19, a screw rod 22 penetrates through the top of the first U-shaped frame 1, a second synchronizing wheel 23 rotatably connected with the top of the first U-shaped frame 1 is sleeved on the outer wall of the screw rod 22 through threads, the first synchronizing wheel 21 and the second synchronizing wheel 23 are in transmission connection through a synchronous belt 24, the bottom end of the screw rod 22 extends into the first U-shaped frame 1 and is fixedly connected with an extrusion frame 25 through bolts, two second extrusion rollers 26 are rotationally connected in the extrusion frame 25, sliding plates 27 are connected to the inner walls of one sides of the first U-shaped frame 1 which are far away from each other in a sliding manner, one ends of the two sliding plates 27 which are close to each other are fixedly connected with the extrusion frame 25 through bolts, the rotary round rod 19 is driven to rotate by starting the driving motor 18, the first bevel gear 17 is driven to rotate along with the second bevel gear 20, the sliding frame 14 and the first extrusion rollers 15 are respectively driven by the two nut blocks 16 to move towards the middle, the finished pipe is primarily transversely extruded by the two first extrusion rollers 15, the first synchronous wheel 21 is driven to rotate by the rotary round rod 19, the first synchronous wheel 21 drives the screw 22 to rotate by the first electromagnetic induction heating device 2 and the synchronous belt 24, the extrusion frame 25 and the second extrusion rollers 26 are driven to move downwards under the rotation of the second synchronous wheel 23, the finished pipe is primarily extruded in the vertical direction by the second extrusion rollers 26, the finished pipe can be extruded by the cooperation of the second extrusion rollers 26 and the two first extrusion rollers 15, and the extrusion size of the finished pipe can be adjusted according to requirements.
According to the utility model, the restraint assembly comprises a plurality of first conveying rollers 28 which are rotationally connected in a third conveying frame 8, two symmetrical fixing frames 29 are fixedly connected to the top of the third conveying frame 8 through bolts, a plurality of rotating shafts 31 are rotationally connected to one side of the fixing frames 29 through bolts, the top ends of the rotating shafts 31 extend to the upper side of the fixing frames 29 and are fixedly connected with first bevel gears 32, the tops of the two fixing frames 29 are fixedly connected with fixing plates 33 through bolts, one side of each fixing plate 33 is rotationally connected with a plurality of rotating shafts 34, a third squeeze roller 35 is fixedly sleeved on the outer wall of each rotating shaft 34, two symmetrical second bevel gears 36 are fixedly sleeved on the outer wall of each rotating shaft 34, the second bevel gears 36 are meshed with the first bevel gears 32, one ends of the plurality of rotating shafts 34 are all extended to one side of each fixing plate 33 and are fixedly connected with chain wheels 37 through chains 38 in a transmission mode, the tops of the fixing frames 29 are fixedly connected with placing plates 39 through bolts, the tops of the placing plates 39 are fixedly connected with rotating motors 40 through bolts, an output shaft of one rotating motor 40 is fixedly connected with one of the rotating motors 37, one rotating shaft 37 is rotationally driven by the rotating shafts 37, and can be driven by the chain wheels 37 to rotate through the corresponding chain wheels 37 to the right angle wheels 37, and can be driven by the chain wheels 37 to rotate to form right angles through the chain wheels 37, and then the right angle rollers 30 and the right angle rollers can be driven to rotate and the right angle rollers 30 to be constrained to rotate, and can be deformed to the right angle roller pair and rotate, and can be driven by the right angle roller pair to the second roller 35 to rotate and the right angle roller to rotate.
In the present utility model, the axes of the third squeeze roller 35, the first constraining roller 30 and the first conveying roller 28 intersect to form a rectangle, and further, the right-angle steel pipe surface can be uniformly constrained by the cooperation of the third squeeze roller 35, the first constraining roller 30 and the first conveying roller 28.
In the present utility model, the first electromagnetic induction heating apparatus 2 and the second electromagnetic induction heating apparatus 7 are both electromagnetic induction heating apparatuses of the utility model of CN 212992641U.
In the present utility model, the pushing device 4 is the pushing device 4 of the utility model with the publication number CN 214424130U.
The advantages of the embodiment over the first embodiment are: the top of the third conveying frame 8 is fixedly connected with two symmetrical air blowers 44 through bolts, and a plurality of through holes 43 are formed in one side, away from each other, of the two fixing frames 29.
The working principle of the extrusion molding equipment for the refined straight angle steel keels is as follows: first, the first electromagnetic induction heating device 2 and the second electromagnetic induction heating device 7 are started, the temperature generated by the first electromagnetic induction heating device 2 and the second electromagnetic induction heating device 7 is regulated, the temperature of the first electromagnetic induction heating device 2 reaches about 900 ℃, the temperature of the second electromagnetic induction heating device 7 reaches about 700 ℃, and the temperature generated by the second electromagnetic induction heating device 7 is smaller than the temperature generated by the first electromagnetic induction heating device 2.
Starting a pushing device 4, conveying finished product pipe steel pipes on a second conveying roller 41 in a first conveying frame 3 to the left side through the pushing device 4, when one end of the finished product pipe enters a first electromagnetic induction heating device 2, primarily heating the finished product pipe by the first electromagnetic induction heating device 2, when the heated finished product pipe enters a first U-shaped frame 1, starting a driving motor 18 to drive a rotary round rod 19 to rotate, meshing a second bevel gear 20 with the first bevel gear 17, connecting the first bevel gear 17 with a nut block 16 in a threaded manner, driving the first bevel gear 17 to rotate along with the second bevel gear 20, driving a sliding frame 14 and a first extrusion roller 15 to move towards the middle, primarily extruding the finished product pipe by two first extrusion rollers 15, driving a first synchronous wheel 21 to rotate by the rotary round rod 19, driving a second synchronous wheel 23 by a synchronous belt 24, driving a extrusion frame 25 and a second extrusion roller 26 to move downwards by the rotary lower screw 22 of the second synchronous wheel 23, heating the finished product pipe by the first synchronous wheel 24 to heat the first electromagnetic induction heating device 6, and the second electromagnetic induction heating device 6, and finally heating the finished product pipe by the first electromagnetic induction heating device 6 in the first U-shaped frame 6, and then heating the finished product pipe by the first electromagnetic induction heating device 6, and the first electromagnetic induction heating device 7, and finally heating the finished product pipe by the first U-shaped frame 6 in the first side after the first U-shaped frame 6, the final extrusion is performed on the finished tube, and the extrusion sizes of the finished tube by the two first extrusion rollers 15 and the second extrusion roller 26 in the second U-shaped frame 6 can be adjusted according to the requirement.
After the finished pipe is finally extruded and formed, the finished pipe enters the third conveying frame 8, the rotating motor 40 is started to drive one of the chain wheels 37 to rotate, one of the chain wheels 37 can drive the other chain wheels 37 to rotate through the chain 38, all the rotating shafts 34 and the second bevel gears 36 are driven to rotate simultaneously, the second bevel gears 36 are meshed with the first bevel gears 32, when the third extrusion roller 35 rotates, the first bevel gears 32 can drive the rotating shaft 31 and the first constraint roller 30 to rotate, the first constraint roller 30, the first conveying roller 28 and the third extrusion roller 35 cooperate with each other to constrain the right-angle steel pipe, the right-angle steel pipe is conveyed to the left side, deformation of the extruded right-angle steel pipe in the conveying process is avoided, when the extruded finished pipe is constrained in the third conveying frame 8, the blower 44 is started, the blower 44 can blow air to the extruded right-angle steel pipe through the through holes 43, and further control the cooling speed and the temperature of the right-angle steel pipe to reach the preset mechanical property.
However, the working principles and wiring methods of the blower 44, the rotating motor 40, the driving motor 18, the first electromagnetic induction heating device 2, the second electromagnetic induction heating device 7 and the pushing device 4, as known to those skilled in the art, belong to conventional means or common general knowledge in the art, and are not described herein in detail, and any choice can be made by those skilled in the art according to their needs or convenience.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present utility model, which is intended to be covered by the claims of the present utility model.
Claims (8)
1. The extrusion molding method of the refined straight angle steel keel is characterized by comprising the following steps of:
s1, selecting a high-frequency welded pipe base material according to requirements, wherein the carbon content of the high-frequency welded pipe base material is less than or equal to 0.2%;
s2, annealing the high-frequency welded pipe base material, heating the high-frequency welded pipe base material to 650-720 ℃ at the annealing temperature of 50 ℃/h, preserving heat for 3h, then reducing the temperature downwards at the speed of 50 ℃/h in an annealing furnace, cooling the high-frequency welded pipe base material to 300+/-20 ℃ in the furnace, discharging the high-frequency welded pipe base material from the furnace, and cooling the high-frequency welded pipe base material to a natural temperature in the air;
s3, cold deforming and extruding the annealed high-frequency welded pipe base material to form a finished pipe, and then stretching and straightening;
s4, performing thermal deformation extrusion on the finished product pipe subjected to stretching and straightening in an extruder for two times to form a right-angle steel pipe, wherein the first medium-frequency heating temperature is 900+/-50 ℃, the extrusion temperature is 850+/-30 ℃, the finished product pipe is extruded to form the right-angle steel pipe, the second medium-frequency heating temperature is 700+/-50 ℃, and four right angles of the right-angle steel pipe are further corrected and residual stress is eliminated;
s5, performing end sawing on the right-angle steel pipe subjected to the twice thermal deformation extrusion, and performing four-angle polishing and fixed-length sawing on the right-angle steel pipe subjected to the end sawing;
the equipment using the extrusion molding method of the refined straight angle steel keel is characterized by sequentially comprising a pushing device (4), a first conveying frame (3), a first electromagnetic induction heating device (2), a first U-shaped frame (1), a second conveying frame (5), a second electromagnetic induction heating device (7), a second U-shaped frame (6) and a third conveying frame (8) along the direction of a production line; the second U-shaped frame (6) and the first U-shaped frame (1) are internally provided with extrusion assemblies which are used for extrusion forming of finished pipes with different sizes and have the same structure, and the third conveying frame (8) is internally provided with a constraint assembly which is used for constraining right-angle steel pipes after twice thermal deformation extrusion forming;
the extrusion assembly comprises a workbench (9) with first grooves (10) and second grooves (12) which are arranged in a cross staggered manner at the top, two first rotating rollers (11) are transversely connected in the first grooves (10), a screw rod (13) positioned in the second grooves (12) is rotationally connected to the first U-shaped frame (1), two symmetrical sliding frames (14) are slidingly connected to the top of the workbench (9), two first extrusion rollers (15) are rotationally connected to the sliding frames (14), two nut blocks (16) are slidingly connected to the second grooves (12), the top ends of the nut blocks (16) are fixedly connected to the bottom of the sliding frames (14), one end of the screw rod (13) penetrates through the nut blocks (16) in a threaded manner, and one end of the screw rod (13) extends to one side of the first U-shaped frame (1) or one side of the second U-shaped frame (6) and is fixedly connected with a first bevel gear (17); the novel hydraulic automatic extrusion device comprises a first U-shaped frame (1) or a second U-shaped frame (6), wherein a driving motor (18) is fixedly connected to the outer side of the first U-shaped frame, an output shaft of the driving motor (18) is fixedly connected with a rotary round rod (19), a second bevel gear (20) meshed with a first bevel gear (17) is fixedly sleeved on the outer wall of the rotary round rod (19), a first synchronous wheel (21) is fixedly connected to the top of the rotary round rod (19), a screw rod (22) penetrates through the top of the first U-shaped frame (1), a second synchronous wheel (23) rotatably connected to the top of the first U-shaped frame (1) is sleeved on the outer wall thread of the screw rod (22), the first synchronous wheel (21) and the second synchronous wheel (23) are in transmission connection through a synchronous belt (24), the bottom end of the screw rod (22) extends into the first U-shaped frame (1) and is fixedly connected with an extrusion frame (25), two second extrusion rollers (26) are rotatably connected to the top of the rotary round rod (19), one side of the first U-shaped frame (1) is far away from the inner wall of the first U-shaped frame (27), and the two sliding plates (27) are connected to one end of the sliding plates (27) and are fixedly connected to each other.
2. The extrusion molding method of refined straight angle steel keels according to claim 1, characterized in that the step S3 of cold deformation extrusion of the high frequency welded pipe base material into a rectangular pipe with a bending R angle greater than 2T (T is the wall thickness of the high frequency welded pipe).
3. The extrusion molding method of refined straight angle steel keels according to claim 1, characterized in that the section of the right-angle steel pipe after sawing the end of step S5 is rectangular or parallelogram.
4. The extrusion molding method of the refined straight angle steel keel according to claim 1, wherein the constraint component comprises a plurality of first conveying rollers (28) rotatably connected in a third conveying frame (8), two symmetrical fixing frames (29) are fixedly connected to the top of the third conveying frame (8), a plurality of rotating shafts (31) are rotatably connected to the fixing frames (29), and the top ends of the rotating shafts (31) extend to the upper side of the fixing frames (29) and are fixedly connected with first bevel gears (32); the top of two mount (29) is all fixedly connected with fixed plate (33), two one side rotation that fixed plate (33) is close to each other is connected with a plurality of pivots (34), the fixed cover in outer wall of pivot (34) is equipped with third squeeze roll (35), the fixed cover in outer wall of pivot (34) is equipped with two symmetrical second bevel gears (36), and second bevel gears (36) and first bevel gear (32) mesh, and a plurality of the one end of pivot (34) all extends to one side of fixed plate (33) and all fixedly connected with sprocket (37), a plurality of through chain (38) transmission connection between sprocket (37), the top fixedly connected with of mount (29) places board (39), the top fixedly connected with rotation motor (40) of placing board (39), the output shaft and one of them sprocket (37) fixed connection of rotation motor (40).
5. The extrusion molding method of the refined straight angle steel keel according to claim 1, wherein the top of the first U-shaped frame (1) is fixedly connected with an annular sliding rail, the bottom of the second synchronous wheel (23) is fixedly connected with a plurality of annular sliding blocks, and the arc sliding blocks are in sliding fit with the annular sliding rail.
6. The extrusion molding method of the refined straight angle steel keel according to claim 1, wherein two supporting plates (42) are fixedly connected to one side of the first U-shaped frame (1), and the top ends of the rotary round rods (19) penetrate through the two supporting plates (42) in a rotary mode.
7. The extrusion molding method of refined straight angle steel keels according to claim 1, characterized in that a plurality of second conveying rollers (41) are rotatably connected in each of the first conveying frame (3) and the second conveying frame (5).
8. The extrusion molding method of the refined straight angle steel keel according to claim 1, wherein the top of the third conveying frame (8) is fixedly connected with two symmetrical blowers (44), and a plurality of through holes (43) are formed in one side, away from each other, of the two fixing frames (29).
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