CN108161365B - Method for manufacturing precise thin-wall rolled and welded metal pipe - Google Patents
Method for manufacturing precise thin-wall rolled and welded metal pipe Download PDFInfo
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- CN108161365B CN108161365B CN201810015650.1A CN201810015650A CN108161365B CN 108161365 B CN108161365 B CN 108161365B CN 201810015650 A CN201810015650 A CN 201810015650A CN 108161365 B CN108161365 B CN 108161365B
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- 239000002184 metal Substances 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000003466 welding Methods 0.000 claims abstract description 57
- 238000005096 rolling process Methods 0.000 claims abstract description 27
- 238000011282 treatment Methods 0.000 claims abstract description 19
- 238000001125 extrusion Methods 0.000 claims abstract description 14
- 238000012805 post-processing Methods 0.000 claims description 33
- 238000009434 installation Methods 0.000 claims description 18
- 239000000523 sample Substances 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 7
- 239000000463 material Substances 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
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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
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- Bending Of Plates, Rods, And Pipes (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a method for preparing a precise thin-wall rolled and welded metal pipe, which comprises the following steps: a. pre-rolling: spirally rolling the strip-shaped metal sheet into a metal tube by using rolling equipment; b. a welding step: the metal pipe is sleeved on the core rod and then is welded by a spiral welding line through welding equipment; c. post-treatment: removing the raised welding points of the welded metal pipe and the core rod sleeved in the metal pipe through post-treatment equipment; d. extrusion molding: and taking the core rod out of the metal pipe after the post-treatment, and then enabling the standard finished product extrusion rod to pass through the metal pipe through extrusion. The wall thickness of the product produced by the process is more than 1MM due to the process limitation of the existing product, and after the process is converted into the product, the wall thickness of the product is expanded to 0.1MM, so that the use field is wider, the dimensional tolerance precision of the product is greatly improved, and the precision can reach 0.01 MM.
Description
Technical Field
The invention relates to the technical field of pipe making devices, in particular to a method for preparing a precise thin-wall rolled and welded metal pipe.
Background
At present, the market application of the ultrathin-wall precise metal pipe is very wide, and the ultrathin-wall precise metal pipe belongs to the fields of textile machinery, printing and dyeing machinery, image and text machinery, machinery before printing and after printing, conveying machinery, office equipment, intelligent equipment and the like. The precision metal welded pipe product has no product with the size precision within 0.015MM in the current precision metal welded pipe market, the precision of the finished product is controlled by subsequent precision machinery such as a lathe grinder and the like, but the processing cost is high, the yield is low, the wall thickness is in the field of thin-wall metal pipes with 0.1MM, and the thin-wall metal pipes cannot be processed by the lathe or the grinder if thought. Especially, the method has no effect on metal pipes with specially treated surfaces, such as rough surfaces, patterned surfaces, corrosion-etched small raised surfaces, needle-shaped arrangement surfaces, wire-drawing surfaces and the like. The invention can ensure the surface to be perfect and has a novel processing technology which can meet the precision requirement.
Disclosure of Invention
The invention aims to provide a method for preparing a precise thin-wall rolled and welded metal tube, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the preparation method of the precise thin-wall rolled welded metal pipe comprises the following steps:
a. pre-rolling: winding a long-strip metal sheet on a core rod in a spiral shape by using a winding device to form a metal tube;
b. a welding step: the metal pipe and the core rod are removed from the rolling equipment and then the metal pipe is subjected to spiral welding seam welding through welding equipment;
c. post-treatment: removing the raised welding points of the welded metal pipe and the core rod sleeved in the metal pipe through post-treatment equipment;
d. extrusion molding: and taking the core rod out of the metal pipe after the post-treatment, and then enabling the standard finished product extrusion rod to pass through the metal pipe through extrusion.
Preferably, the rolling apparatus in the pre-rolling step includes: the first base is fixedly provided with a pair of first linear guide rails which are arranged in parallel, a first sliding block is arranged on each pair of first linear guide rails in a sliding manner, a pair of first lead screw mounting bearing seats are fixedly arranged between the pair of first linear guide rails on the first base, a first lead screw is rotatably arranged between the pair of first lead screw mounting bearing seats, a first nut is movably arranged on the first lead screw and fixedly connected with the first sliding blocks on the first linear guide rails on two sides through a connecting rod, the top surface of the first sliding block is higher than the top of the first nut, a first lead screw driving motor is further arranged on the outer side of the first lead screw mounting bearing seat on one side of the first base, the first lead screw driving motor is fixedly connected with the end part of the first lead screw through a coupler and drives the first lead screw to rotate, and a rolling platform is further fixedly arranged on the top surface of the first sliding block, the two ends of the top surface of the rolling platform are respectively fixedly provided with a first bearing seat, a core rod is erected between 2 first bearing seats, the axial lead of the core rod is parallel to the axial lead of a first lead screw, the outer side of the first bearing seat at one side of the rolling platform is also provided with a first core rod driving motor, the first core rod driving motor is clamped with the end part of the core rod through a coupler, the first core rod driving motor drives the core rod to rotate, the first base is positioned at one side of the first linear guide rail, which is far away from the first lead screw, and is also provided with a metal sheet conveying device, the metal sheet conveying device comprises a bracket fixedly arranged on the first base, the top end of the bracket is formed with a rotatable mounting disc, the top surface of the mounting disc is formed with a limiting block with an inverted U-shaped cross section, a metal sheet is inserted into a gap between the limiting block and the top surface of the mounting disc, and a, the top end of the support is formed with a pin hole, the support is further provided with a pin shaft, and the pin shaft penetrates through the positioning hole and is inserted into the pin hole.
Preferably, the welding apparatus in the welding step includes: a second base, a pair of second linear guide rails arranged in parallel are fixedly installed on the second base, a second sliding block is installed on each pair of second linear guide rails in a sliding manner, a pair of second lead screw installation bearing seats are also fixedly installed between the pair of second linear guide rails on the second base, a second lead screw is rotatably installed between the pair of second lead screw installation bearing seats, a second nut is movably installed on the second lead screw and fixedly connected with the second sliding blocks on the second linear guide rails on two sides through a connecting rod, the top surface of the second sliding block is higher than the top of the second nut, a second lead screw driving motor is also installed on the outer side of the second lead screw installation bearing seat on one side of the second base, the second lead screw driving motor is fixedly connected with the end part of the second lead screw through a coupler, the second lead screw driving motor drives the second lead screw to rotate, and a welding platform is also fixedly installed on the top surface of the second sliding block, two ends of the top surface of the welding platform are respectively and fixedly provided with a second bearing seat, 2 second bearing seats are respectively and rotatably provided with an apex, 2 apexes are oppositely arranged, a core rod is erected between the apexes, the axial lead of the core rod is parallel to the axial lead of a second lead screw, a second core rod driving motor is further fixedly arranged on the outer side of the second bearing seat on one side of the welding platform, the second core rod driving motor is fixedly connected with the end part of the adjacent apex through a coupler, the second core rod driving motor drives the core rod to rotate, a laser welding machine is further fixedly arranged on one side, away from the second lead screw, of a second linear guide rail, the laser welding machine comprises a laser welding machine body and a laser welding head, the laser welding head is located over the core rod, one side of the laser welding head is further fixedly provided with an infrared sensing probe, and the infrared sensing probe is also located over the core.
Preferably, the post-processing apparatus in the post-processing step includes: a third base, a pair of third linear guide rails arranged in parallel is fixedly installed on the third base, a third sliding block is installed on each pair of third linear guide rails in a sliding manner, a pair of third screw rod installation bearing seats is also fixedly installed between the pair of third linear guide rails on the third base, a third screw rod is rotatably installed between the pair of third screw rod installation bearing seats, a third nut is movably installed on the third screw rod and fixedly connected with the third sliding blocks on the third linear guide rails on two sides through a connecting rod, the top surface of the third sliding block is higher than the top of the third nut, a third screw rod driving motor is also installed on the outer side of the third screw rod installation bearing seat on one side of the third base, the third screw rod driving motor is fixedly connected with the end part of the third screw rod through a coupler, the third screw rod driving motor drives the third screw rod to rotate, and a post-processing platform is also fixedly installed on the top surface of the third sliding block, a third bearing seat is fixedly arranged at each of two ends of the top surface of the post-processing platform, a chuck is rotatably arranged on the third bearing seat at one side, a tip is rotatably arranged on the third bearing seat at the other side, the axial leads of the tip and the chuck are aligned with each other, the tip and the chuck are arranged oppositely, a core rod is further clamped between the tip and the chuck, a third core rod driving motor is further fixedly arranged at one side of the post-processing platform, which is positioned on the third bearing seat where the chuck is arranged, the third core rod driving motor drives the chuck to rotate, a post-processing bracket is further fixedly arranged at one side of the third base, which is positioned on the third linear guide rail and away from the third lead screw, the post-processing bracket is columnar, a cam driving motor is fixedly arranged at the top of the post-processing bracket, a cam is fixedly arranged on an output shaft of the cam, the bottom end of the dotting rod is fixedly provided with a dotting head, the dotting head is positioned right above the core rod, the side wall of the post-treatment bracket is also fixedly provided with a pair of guide posts at two sides of the dotting rod, the middle lower part of the post-treatment bracket is also fixedly provided with a dotting rod linear bearing, the dotting rod is fixedly provided with a limiting rod which is formed with a central hole, two ends of the limiting rod are respectively formed with a guide post through hole, 2 guide posts respectively penetrate through the guide post through holes at 2 sides, the dotting rod penetrates through the central hole of the limiting rod and is fixed and then extends through the dotting rod linear bearing to the right above the core rod, the guide posts are also sleeved with springs, the top end of the dotting rod is tightly attached to the lower edge of the cam, the dotting head is in a round platform shape with a large top and a small bottom, the post-treatment platform is also provided with a core rod at one side, the end of the core rod is arranged in the groove.
Preferably, the second linear guide rail is further provided with a plurality of bearing sliding blocks in a sliding manner, the bearing sliding blocks between the adjacent linear guide rails are fixedly connected into a whole through a connecting plate, and the top surfaces of the bearing sliding blocks are respectively and fixedly connected to the bottom surface of the welding platform.
Preferably, a plurality of bearing sliding blocks are slidably mounted on the third linear guide rail, the bearing sliding blocks between the adjacent linear guide rails are fixedly connected into a whole through a connecting plate, and the top surfaces of the bearing sliding blocks are respectively and fixedly connected to the bottom surface of the post-processing platform.
Preferably, the first mandrel driving motor, the second mandrel driving motor, the third mandrel driving motor, the first lead screw driving motor, the second lead screw driving motor, and the third lead screw driving motor have the same rotation speed, and the first lead screw, the second lead screw, the third lead screw, and the mandrel have the same rotation direction.
Preferably, the curved surface of the mandrel is further formed with a spiral groove corresponding to the weld of the metal pipe.
Preferably, the standard finished extruded rod is a steel round rod with the same diameter as the inner diameter of the standard metal pipe.
Compared with the prior art, the invention has the beneficial effects that: the product has the advantages of thin thickness and wider application range: the wall thickness of the product produced by the process is more than 1MM due to the process limitation of the existing product, and the wall thickness of the product is expanded to 0.1MM after the process is converted into the product, so that the application field is wider;
(2) the product precision is higher: the existing product is limited by the process, the precision of the produced product is difficult to form uniformity, the tolerance of the outer diameter and the inner diameter of the product, the tolerance of the ovality of the product and the tolerance of the concentricity of the product are difficult to guarantee, and the problems solved by the invention are that the precision of the dimensional tolerance of the product is greatly improved and can reach the precision of 0.01 mm;
(3) the production efficiency is greatly improved: because of adopting the improved production process, the finished product rate of the product is improved, and the efficiency is greatly improved;
(4) the service life is ultra-long, and the economic performance is good: due to the improved production process, the invention extends the metal material to the carbon steel material and the stainless steel material, so that the product cost is greatly reduced;
(5) corrosion resistance and strong conveying capacity: the invention also carries out different treatments on the surface of the material in the production process aiming at different use environments of individual industries so as to increase the surface hardness and the damping of the product. The wear resistance of the product after hardening treatment is greatly enhanced, and the service life of the product is more than eight years. The damage to the carrier due to the special surface treatment is very small.
Drawings
FIG. 1 is a schematic structural view of a rolling apparatus of the present invention;
FIG. 2 is a cross-sectional view of a stent of the rolling apparatus of the present invention;
FIG. 3 is a schematic view of the welding apparatus of the present invention;
FIG. 4 is a schematic structural view of an aftertreatment apparatus of the invention;
FIG. 5 is a schematic structural view of a mandrel of the present invention;
in the figure: a core rod 1; a first base 2 a; a second base 2 b; a third base 2 c; a first linear guide 3 a; a second linear guide 3 b; a third linear guide 3 c; a first lead screw mounting bearing block 4 a; a second lead screw mounting bearing seat 4 b; a third lead screw mounting bearing seat 4 c; a first lead screw 5 a; a second lead screw 5 b; a third lead screw 5 c; a first nut 6 a; a second nut 6 b; a third nut 6 c; a first slider 7 a; a second slider 7 b; a third slider 7 c; a first lead screw drive motor 8 a; a second lead screw drive motor 8 b; a third lead screw drive motor 8 c; a first bearing housing 9 a; a second bearing housing 9 b; a third bearing seat 9 c; a first mandrel drive motor 10 a; a second mandrel driving motor 10 b; a third mandrel driving motor 10 c; a rolling platform 11 a; a welding stage 11 b; a post-processing stage 11 c; a support 12; a mounting plate 13; a stopper 14; a positioning hole 15; a pin hole 16; a pin 17; a laser welder body 18; a laser welding head 19; an infrared ray sensing probe 20; a chuck 21; a post-treatment rack 22; a cam drive motor 23; a cam 24; a dotting rod 25; a dotting head 26; a guide post 27; a dotting rod linear bearing 28; a stopper rod 29; a spring 30; a mandrel support block 31; a load-bearing slider 32; a spiral groove 33.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, the present invention provides a technical solution: the preparation method of the precise thin-wall rolled welded metal pipe comprises the following steps:
a. pre-rolling: winding a long-strip metal sheet on a core rod 1 in a spiral shape by using a winding device to form a metal tube;
b. a welding step: the metal pipe and the core rod 1 are removed from the rolling equipment and then are subjected to spiral welding seam welding through welding equipment;
c. post-treatment: removing the raised welding points of the welded metal pipe and the core rod 1 sleeved in the metal pipe through post-treatment equipment;
d. extrusion molding: the core rod 1 is taken out of the metal tube after post-treatment, and then the standard finished extrusion rod passes through the metal tube through extrusion.
The rolling apparatus in the pre-rolling step includes: a first base 2a, a pair of first linear guide rails 3a arranged in parallel are fixedly installed on the first base 2a, a first sliding block 7a is installed on each pair of first linear guide rails 3a in a sliding manner, a pair of first lead screw installation bearing seats 4a is also fixedly installed between the pair of first linear guide rails 3a on the first base 2a, a first lead screw 5a is rotatably installed between the pair of first lead screw installation bearing seats 4a, a first nut 6a is movably installed on the first lead screw 5a, the first nut 6a is fixedly connected with the first sliding blocks 7a on the first linear guide rails 3a at two sides through a connecting rod, the top surface of the first sliding block 7a is higher than the top of the first nut 6a, a first lead screw driving motor 8a is also installed on the outer side of the first lead screw installation bearing seat 4a at one side of the first base 2a, and the first lead screw driving motor 8a is fixedly connected with the end part of the first lead screw 5a through a coupler, the first lead screw driving motor 8a drives the first lead screw 5a to rotate, the top surface of the first sliding block 7a is also fixedly provided with a rolling platform 11a, two ends of the top surface of the rolling platform 11a are respectively and fixedly provided with a first bearing seat 9a, a mandrel 1 is erected between 2 first bearing seats 9a, the axial lead of the mandrel 1 is parallel to the axial lead of the first lead screw 5a, the outer side of the first bearing seat 9a of the rolling platform 11a positioned at one side is also provided with a first mandrel driving motor 10a, the first mandrel driving motor 10a is clamped with the end part of the mandrel 1 through a coupler, the first mandrel driving motor 10a drives the mandrel 1 to rotate, the first base 2a positioned at the side of the first linear guide rail 3a far away from the first lead screw 5a is also provided with a metal sheet conveying device, the metal sheet conveying device comprises a bracket 12 fixedly arranged on the first base 2a, a rotatable mounting plate 13 is formed at the top end of the support 12, a limiting block 14 with an inverted U-shaped cross section is formed on the top surface of the mounting plate 13, a metal sheet is inserted into a gap between the limiting block 14 and the top surface of the mounting plate 13, a plurality of positioning holes 15 are formed on the mounting plate 13 and positioned on the outer side of the limiting block 14, pin holes 16 are formed at the top end of the support 12, pin shafts 17 are further arranged on the support 12, and the pin shafts 17 penetrate through the positioning holes 15 and are inserted into the pin holes 16.
The welding apparatus in the welding step includes: a second base 2b, a pair of second linear guide rails 3b arranged in parallel are fixedly installed on the second base 2b, a second sliding block 7b is installed on each pair of second linear guide rails 3b in a sliding manner, a pair of second lead screw installation bearing seats 4b are also fixedly installed between the pair of second linear guide rails 3b on the second base 2b, a second lead screw 5b is rotatably installed between the pair of second lead screw installation bearing seats 4b, a second nut 6b is movably installed on the second lead screw 5b, the second nut 6b is fixedly connected with the second sliding blocks 7b on the second linear guide rails 3b on two sides through a connecting rod, the top surface of the second sliding block 7b is higher than the top of the second nut 6b, a second lead screw driving motor 8b is also installed on the outer side of the second lead screw installation bearing seat 4b on one side of the second base 2b, and the second lead screw driving motor 8b is fixedly connected with the end part of the second lead screw 5b through a coupler, a second lead screw driving motor 8b drives a second lead screw 5b to rotate, a welding platform 11b is further fixedly mounted on the top surface of a second sliding block 7b, two second bearing seats 9b are respectively and fixedly mounted at two ends of the top surface of the welding platform 11b, apexes are respectively and rotatably mounted on 2 second bearing seats 9b, 2 apexes are oppositely arranged, a core rod 1 is erected between the 2 apexes, the axial lead of the core rod 1 is parallel to the axial lead of the second lead screw 5b, a second core rod driving motor 10b is further and fixedly mounted on the outer side of the second bearing seat 9b, located on one side of the welding platform 11b, a second core rod driving motor 10b is fixedly connected with the end part of the adjacent apex through a coupler, the second core rod driving motor 10b drives the core rod 1 to rotate, and a laser welding machine is further and fixedly mounted on one side, located on the second linear guide rail 3b and far away from the second lead screw 5b, of a second, the laser welding machine comprises a laser welding machine body 18 and a laser welding head 19, wherein the laser welding head 19 is positioned right above the core rod 1, an infrared sensing probe 20 is fixedly installed on one side of the laser welding head 19, and the infrared sensing probe 20 is also positioned right above the core rod 1.
The post-processing apparatus in the post-processing step includes: a third base 2c, a pair of third linear guide rails 3c arranged in parallel are fixedly installed on the third base 2c, a third sliding block 7c is installed on each pair of third linear guide rails 3c in a sliding manner, a pair of third lead screw installation bearing seats 4c are also fixedly installed between the pair of third linear guide rails 3c on the third base 2c, a third lead screw 5c is rotatably installed between the pair of third lead screw installation bearing seats 4c, a third nut 6c is movably installed on the third lead screw 5c, the third nut 6c is fixedly connected with the third sliding blocks 7c on the third linear guide rails 3c on two sides through a connecting rod, the top surface of the third sliding block 7c is higher than the top of the third nut 6c, a third lead screw driving motor 8c is also installed on the outer side of the third lead screw installation bearing seat 4c on one side of the third base 2c, and the third lead screw driving motor 8c is fixedly connected with the end part of the third lead screw 5c through a coupler, a third lead screw driving motor 8c drives a third lead screw 5c to rotate, a post-processing platform 11c is fixedly arranged on the top surface of a third sliding block 7c, a third bearing seat 9c is fixedly arranged at each of two ends of the top surface of the post-processing platform 11c, a chuck 21 is rotatably arranged on the third bearing seat 9c at one side, an apex is rotatably arranged on the third bearing seat 9c at the other side, the axes of the apex and the chuck 21 are aligned with each other, the apex and the chuck 21 are oppositely arranged, a core rod 1 is further clamped between the apex and the chuck 21, a third core rod driving motor 10c is fixedly arranged at one side of the third bearing seat 9c where the chuck 21 is arranged on the post-processing platform 11c, the chuck 21 is driven to rotate by the third core rod driving motor 10c, a post-processing support 22 is further fixedly arranged at one side of a third base 2c, which is far away from the third lead screw 5c, on the, the post-processing support 22 is columnar, a cam driving motor 23 is fixedly installed at the top of the post-processing support 22, a cam 24 is fixedly installed on an output shaft of the cam driving motor 23, a dotting rod 25 is further installed under the cam 24, a dotting head 26 is fixedly installed at the bottom end of the dotting rod 25, the dotting head 26 is located right above the core rod 1, a pair of guide columns 27 are further fixedly installed on two sides of the dotting rod 25 on the side wall of the post-processing support 22, a dotting rod linear bearing 28 is further fixedly installed at the middle lower portion of the post-processing support 22, a limiting rod 29 formed with a central hole is fixedly installed on the dotting rod 25, a guide column through hole is respectively formed at each of two ends of the limiting rod 29, 2 guide columns 27 respectively penetrate through the guide column through holes on the 2 sides, the dotting rod 25 penetrates through the central hole of the limiting rod 29 and is fixed and then extends through the dotting rod linear bearing 28 to the position, the guide post 27 is further sleeved with a spring 30, the top end of the dotting rod 25 is tightly attached to the lower edge of the cam 24, the dotting head 26 is in a circular truncated cone shape with a large top and a small bottom, the post-processing platform 11c is also provided with a core rod supporting block 31 on one side of the third bearing seat 9c provided with the tip, a circular arc-shaped groove is formed in the top surface of the core rod supporting block 31, and the end part of the core rod 1 is erected in the groove.
A plurality of bearing sliding blocks 32 are slidably mounted on the second linear guide rail 3b, the bearing sliding blocks 32 between adjacent linear guide rails are fixedly connected into a whole through a connecting plate, and the top surfaces of the bearing sliding blocks 32 are also fixedly connected to the bottom surface of the welding platform 11b respectively.
A plurality of bearing sliding blocks 32 are slidably mounted on the third linear guide rail 3c, the bearing sliding blocks 32 between the adjacent linear guide rails are fixedly connected into a whole through a connecting plate, and the top surfaces of the bearing sliding blocks 32 are also fixedly connected to the bottom surface of the post-processing platform 11c respectively.
The first mandrel driving motor 10a, the second mandrel driving motor 10b, the third mandrel driving motor 10c, the first lead screw driving motor 8a, the second lead screw driving motor 8b, and the third lead screw driving motor 8c have the same rotation speed, and the first lead screw 5a, the second lead screw 5b, the third lead screw 5c, and the mandrel 1 have the same rotation direction.
The curved surface of the core rod 1 is also formed with a spiral groove 33 corresponding to the weld of the metal pipe.
The standard finished product extrusion rod is a steel round rod with the diameter same as the inner diameter of a standard metal pipe.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The preparation method of the precise thin-wall rolled welded metal pipe is characterized by comprising the following steps of: the method comprises the following steps:
a. pre-rolling: winding a long-strip metal sheet on a core rod in a spiral shape by using a winding device to form a metal tube;
b. a welding step: the metal pipe and the core rod are taken down from the rolling equipment and then are welded by the welding equipment in a spiral welding way;
c. post-treatment: removing the raised welding points of the welded metal pipe and the core rod sleeved in the metal pipe through post-treatment equipment;
d. extrusion molding: taking out the core rod from the metal tube after post-treatment, then passing the standard finished product extrusion rod through the metal tube through extrusion,
the rolling apparatus in the pre-rolling step includes: the first base is fixedly provided with a pair of first linear guide rails which are arranged in parallel, a first sliding block is arranged on each pair of first linear guide rails in a sliding manner, a pair of first lead screw mounting bearing seats are fixedly arranged between the pair of first linear guide rails on the first base, a first lead screw is rotatably arranged between the pair of first lead screw mounting bearing seats, a first nut is movably arranged on the first lead screw and fixedly connected with the first sliding blocks on the first linear guide rails on two sides through a connecting rod, the top surface of the first sliding block is higher than the top of the first nut, a first lead screw driving motor is arranged on the outer side of the first lead screw mounting bearing seat on one side of the first base, the first lead screw driving motor is fixedly connected with the end part of the first lead screw through a coupler, and drives the first lead screw to rotate, the top surface of the first sliding block is fixedly provided with a rolling platform, two ends of the top surface of the rolling platform are respectively fixedly provided with a first bearing seat, a mandrel is erected between the 2 first bearing seats, the axial lead of the mandrel is parallel to the axial lead of the first lead screw, the outer side of the first bearing seat on one side of the rolling platform is also provided with a first mandrel driving motor, the first mandrel driving motor is clamped with the end part of the mandrel through a coupler, the first mandrel driving motor drives the mandrel to rotate, a metal sheet conveying device is further arranged on one side, away from the first lead screw, of the first base, the first base comprises a support fixedly arranged on the first base, a rotatable mounting disc is formed at the top end of the support, and a limiting block with an inverted U-shaped cross section is formed on the top surface of the mounting disc, the metal sheet is inserted into a gap between the top surfaces of the limiting blocks and the mounting disc, a plurality of positioning holes are formed in the mounting disc and located on the outer side of the limiting blocks, pin holes are formed in the top end of the support, and pin shafts are further arranged on the support and penetrate through the positioning holes to be inserted into the pin holes.
2. The method for manufacturing the precision thin-walled rolled welded metal tube according to claim 1, wherein: the welding apparatus in the welding step includes: the second base is fixedly provided with a pair of second linear guide rails which are arranged in parallel, the pair of second linear guide rails are provided with second sliding blocks in a sliding manner, the second base is positioned between the pair of second linear guide rails and is fixedly provided with a pair of second lead screw mounting bearing seats, a second lead screw is rotatably arranged between the pair of second lead screw mounting bearing seats, a second nut is movably arranged on the second lead screw and is fixedly connected with the second sliding blocks on the second linear guide rails on two sides through a connecting rod, the top surface of the second sliding block is higher than the top of the second nut, the second base is positioned on the outer side of the second lead screw mounting bearing seat on one side and is also provided with a second lead screw driving motor, the second lead screw driving motor is fixedly connected with the end part of the second lead screw through a coupler, and drives the second lead screw to rotate, the top surface of the second sliding block is also fixedly provided with a welding platform, two ends of the top surface of the welding platform are respectively fixedly provided with a second bearing seat, each of the 2 second bearing seats is rotatably provided with a tip, the 2 tips are oppositely arranged, a core rod is erected between the 2 tips, the axial lead of the core rod is parallel to the axial lead of the second lead screw, the outer side of the second bearing seat on one side of the welding platform is also fixedly provided with a second core rod driving motor, the second core rod driving motor is fixedly connected with the end part of the adjacent tip through a coupler, the second core rod driving motor drives the core rod to rotate, a laser welding machine is also fixedly arranged on one side, away from the second lead screw, of the second base, the second base is positioned on the second linear guide rail, and comprises a laser welding machine body and a laser welding head, the laser welding head is located right above the core rod, an infrared sensing probe is fixedly mounted on one side of the laser welding head, and the infrared sensing probe is also located right above the core rod.
3. The method for manufacturing the precision thin-walled rolled welded metal tube according to claim 1, wherein: the post-processing apparatus in the post-processing step includes: a pair of third linear guide rails arranged in parallel is fixedly installed on the third base, a third sliding block is installed on each pair of third linear guide rails in a sliding manner, a pair of third lead screw installation bearing seats are fixedly installed between the pair of third linear guide rails on the third base, a third lead screw is rotatably installed between the pair of third lead screw installation bearing seats, a third nut is movably installed on the third lead screw and fixedly connected with the third sliding blocks on the third linear guide rails on two sides through a connecting rod, the top surface of the third sliding block is higher than the top of the third nut, a third lead screw driving motor is installed on the outer side of the third lead screw installation bearing seat on one side of the third base, the third lead screw driving motor is fixedly connected with the end part of the third lead screw through a coupler, and drives the third lead screw to rotate, the top surface of the third sliding block is fixedly provided with a post-processing platform, two ends of the top surface of the post-processing platform are respectively fixedly provided with a third bearing seat, the third bearing seat on one side is rotatably provided with a chuck, the third bearing seat on the other side is rotatably provided with a tip, the axial lines of the tip and the chuck are aligned with each other, the tip and the chuck are arranged in opposite directions, a core rod is clamped between the tip and the chuck, the post-processing platform is also fixedly provided with a third core rod driving motor on one side of the third bearing seat on which the chuck is arranged, the third core rod driving motor drives the chuck to rotate, a post-processing bracket is also fixedly arranged on one side of the third base far away from the third lead screw, the post-processing bracket is columnar, and the top of the post-processing bracket is fixedly provided with a cam driving motor, the automatic dotting device is characterized in that a cam is fixedly mounted on an output shaft of the cam driving motor, a dotting rod is further mounted under the cam, a dotting head is fixedly mounted at the bottom end of the dotting rod and located right above the core rod, a pair of guide posts is further fixedly mounted on the side wall of the post-processing support and located on two sides of the dotting rod, a dotting rod linear bearing is further fixedly mounted on the middle lower portion of the post-processing support, a limiting rod formed with a central hole is fixedly mounted on the dotting rod, guide post through holes are respectively formed in two ends of the limiting rod, the 2 guide posts respectively penetrate through the guide post through holes in the 2 sides, the dotting rod penetrates through the central hole of the limiting rod and then penetrates through the dotting rod linear bearing to the position right above the core rod after being fixed, a spring is further sleeved on each guide post, and the top end of the dotting rod is tightly attached to the lower edge, the dotting head is in a round table shape with a large upper part and a small lower part, a core rod supporting block is further installed on one side, located on the third bearing seat provided with the tip, of the post-processing platform, an arc-shaped groove is formed in the top surface of the core rod supporting block, and the end portion of the core rod is erected in the groove.
4. The method for manufacturing the precision thin-walled rolled welded metal tube according to claim 2, characterized in that: and a plurality of bearing sliding blocks are slidably arranged on the second linear guide rail, the bearing sliding blocks between the adjacent linear guide rails are fixedly connected into a whole through a connecting plate, and the top surfaces of the bearing sliding blocks are respectively and fixedly connected to the bottom surface of the welding platform.
5. The method for manufacturing the precision thin-walled rolled welded metal tube according to claim 3, wherein: and the third linear guide rail is also provided with a plurality of bearing sliding blocks in a sliding manner, the bearing sliding blocks between the adjacent linear guide rails are fixedly connected into a whole through a connecting plate, and the top surfaces of the bearing sliding blocks are also respectively and fixedly connected to the bottom surface of the post-treatment platform.
6. The method for manufacturing the precision thin-walled rolled welded metal tube according to claim 5, wherein: the first mandrel driving motor, the second mandrel driving motor, the third mandrel driving motor, the first lead screw driving motor, the second lead screw driving motor and the third lead screw driving motor have the same rotating speed, and the rotating directions of the first lead screw, the second lead screw, the third lead screw and the mandrel are also the same.
7. The method for manufacturing the precision thin-walled rolled welded metal tube according to claim 1, wherein: and a spiral groove corresponding to the welding seam of the metal pipe is formed on the curved surface of the core rod.
8. The method for manufacturing the precision thin-walled rolled welded metal tube according to claim 1, wherein: the standard finished product extrusion rod is a steel round rod with the diameter same as the inner diameter of the standard metal pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810015650.1A CN108161365B (en) | 2018-01-08 | 2018-01-08 | Method for manufacturing precise thin-wall rolled and welded metal pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810015650.1A CN108161365B (en) | 2018-01-08 | 2018-01-08 | Method for manufacturing precise thin-wall rolled and welded metal pipe |
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| CN108161365B true CN108161365B (en) | 2019-12-31 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1108159A (en) * | 1994-03-07 | 1995-09-13 | 东北重型机械学院南校 | Spiral-weld tube formation extruding machine |
| JPH09122744A (en) * | 1995-10-31 | 1997-05-13 | Nippon Steel Weld Prod & Eng Co Ltd | Manufacture of corrosion-proof steel pipe pile |
| CN1191769A (en) * | 1996-10-25 | 1998-09-02 | 薄膜产品韦姿曼村有限公司 | Process for producing tubular membrane assembly |
| CN201475627U (en) * | 2009-08-04 | 2010-05-19 | 陈雅如 | Hollow pipe |
| CN104368917A (en) * | 2013-08-13 | 2015-02-25 | 江苏江扬建材机械有限公司 | Spiral weld-pipe mill |
| EP2873786A1 (en) * | 2013-11-15 | 2015-05-20 | PWS GmbH | Double-walled large pipe, use and method of manufacturing a double-walled large pipe |
-
2018
- 2018-01-08 CN CN201810015650.1A patent/CN108161365B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1108159A (en) * | 1994-03-07 | 1995-09-13 | 东北重型机械学院南校 | Spiral-weld tube formation extruding machine |
| JPH09122744A (en) * | 1995-10-31 | 1997-05-13 | Nippon Steel Weld Prod & Eng Co Ltd | Manufacture of corrosion-proof steel pipe pile |
| CN1191769A (en) * | 1996-10-25 | 1998-09-02 | 薄膜产品韦姿曼村有限公司 | Process for producing tubular membrane assembly |
| CN201475627U (en) * | 2009-08-04 | 2010-05-19 | 陈雅如 | Hollow pipe |
| CN104368917A (en) * | 2013-08-13 | 2015-02-25 | 江苏江扬建材机械有限公司 | Spiral weld-pipe mill |
| EP2873786A1 (en) * | 2013-11-15 | 2015-05-20 | PWS GmbH | Double-walled large pipe, use and method of manufacturing a double-walled large pipe |
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| CN108161365A (en) | 2018-06-15 |
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Address after: 313000 Donglin Town Industrial Functional Zone North District Zhendong road beilishan South Road East, Wuxing District, Huzhou City, Zhejiang Province Patentee after: ZHEJIANG LEINI MOSHEN PRECISION MACHINERY Co.,Ltd. Address before: 313000 industrial zone of Donglin Town, Wuxing District, Huzhou, Zhejiang Patentee before: ZHEJIANG LEINIMOSHEN PRECISION MACHINERY MANUFACTURING Co.,Ltd. |
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Denomination of invention: Preparation method of precision thin wall rolled welded metal pipe Effective date of registration: 20210820 Granted publication date: 20191231 Pledgee: Huzhou Wuxing Rural Commercial Bank Co.,Ltd. Qingshan sub branch Pledgor: ZHEJIANG LEINI MOSHEN PRECISION MACHINERY Co.,Ltd. Registration number: Y2021330001191 |
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Granted publication date: 20191231 Pledgee: Huzhou Wuxing Rural Commercial Bank Co.,Ltd. Qingshan sub branch Pledgor: ZHEJIANG LEINI MOSHEN PRECISION MACHINERY Co.,Ltd. Registration number: Y2021330001191 |