CN110587321B - Production process of special-shaped household pipe - Google Patents
Production process of special-shaped household pipe Download PDFInfo
- Publication number
- CN110587321B CN110587321B CN201910927877.8A CN201910927877A CN110587321B CN 110587321 B CN110587321 B CN 110587321B CN 201910927877 A CN201910927877 A CN 201910927877A CN 110587321 B CN110587321 B CN 110587321B
- Authority
- CN
- China
- Prior art keywords
- shaped
- pipe
- welding
- special
- shaping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 161
- 238000003466 welding Methods 0.000 claims abstract description 111
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 80
- 239000010959 steel Substances 0.000 claims abstract description 80
- 238000007493 shaping process Methods 0.000 claims abstract description 70
- 238000005520 cutting process Methods 0.000 claims abstract description 44
- 238000005507 spraying Methods 0.000 claims abstract description 38
- 239000003973 paint Substances 0.000 claims abstract description 34
- 238000001035 drying Methods 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000007790 scraping Methods 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 28
- 239000002893 slag Substances 0.000 claims description 27
- 230000008569 process Effects 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 24
- 238000007664 blowing Methods 0.000 claims description 18
- 238000005498 polishing Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 15
- 238000000227 grinding Methods 0.000 claims description 13
- 238000005096 rolling process Methods 0.000 claims description 12
- 230000002159 abnormal effect Effects 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 238000011068 loading method Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000010422 painting Methods 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000000712 assembly Effects 0.000 description 35
- 238000000429 assembly Methods 0.000 description 35
- 238000003860 storage Methods 0.000 description 15
- 230000006872 improvement Effects 0.000 description 11
- 238000000861 blow drying Methods 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000006698 induction Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000037237 body shape Effects 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/06—Metal-working plant comprising a number of associated machines or apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Coating Apparatus (AREA)
Abstract
The invention discloses a production process of a special-shaped household pipe, which has the technical scheme that the production process comprises a feeding step, wherein a feeding mechanism is provided for feeding a steel belt; a forming step, providing a forming mechanism to bend the two sides of the steel belt in the same direction to obtain a circular pipe to be welded; a welding step, providing a welding mechanism to weld the connecting band; a shaping step, providing a shaping mechanism to extrude the side wall of the circular tube to be shaped so as to form a concave surface and an edge; a drying step, providing a drying mechanism for drying the special-shaped household pipe to be dried; a spraying step, wherein a fine wire spraying mechanism is provided for spraying a welding strip of the special-shaped household pipe to be sprayed; and a cutting step, namely providing a flying saw cutting mechanism to cut the special-shaped household pipe to be cut. Because the paint-coated steel strip is used as a raw material for processing, the paint on the surface of the steel strip plays a role in protecting and preventing rust, and the steel strip is convenient to store and transport; the paint is directly sprayed on the steel belt, the surface of the steel belt is smooth, the area of the steel belt is large, and the paint waste is greatly reduced.
Description
Technical Field
The invention relates to the technical field of household pipe processing, in particular to a production process of a special-shaped household pipe.
Background
Household pipes are widely used in daily life due to their strong and durable characteristics, and the cross-section of the household pipe is generally configured to be circular for easy processing. In order to improve the rigidity of the household pipe, the household pipe is not easy to bend, or in order to improve the attractiveness of the household pipe, the household pipe is designed to be in a special shape, and the household pipe forms an edge. The processing of the household pipe with the edge is complex, and the household pipe made of metal materials such as stainless steel, iron, alloy and the like is generally required to be painted on the outer surface so as to improve the attractiveness of the household pipe.
The cross section of the special-shaped household pipe made of metal shown in the attached figure 1 is not circular, the outer side surface of the special-shaped household pipe is formed by connecting a plurality of concave surfaces which are inwards sunken, each concave surface is annularly distributed along the central axis of the household pipe, the special-shaped household pipe is complex, edges are formed at the joints of the adjacent concave surfaces on the outer side surface of the special-shaped household pipe, the edges are arranged in parallel, the length direction of the edges is convenient to be consistent with the length of the household pipe, and the outer surface of the household pipe is painted.
At present, the processing technology of the special-shaped household pipe shown in the attached drawing 1 is that a semi-finished product with the surface not coated with paint is manufactured through a steel belt, and the surface paint is finished through a paint spraying process after the special-shaped household pipe is molded. However, the prior art mainly has the following problems: 1. the pig iron and steel belts used in the prior art have high requirements on antirust liquid and are easy to rust in the daily storage and transportation process; 2. in the prior art, three steps of pipe making, modeling and paint spraying need to be separately carried out, manual operation is needed for connection in the middle, the cost is increased in the carrying process, and potential safety hazards are increased; 3. the existing process is that a steel belt is firstly manufactured into a special-shaped pipe and then is painted, and because the diameter of the special-shaped pipe is small, a large amount of paint is wasted during painting, and the cost is increased.
Disclosure of Invention
In view of the defects in the prior art, the present invention aims to provide a production process of a special-shaped household pipe to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a production technology of heterotypic house pipe which characterized in that provides feed mechanism, forming mechanism, welding mechanism, forming mechanism, weathers mechanism, fine rule spraying mechanism and flies to saw cutting mechanism, includes following step:
a feeding step, namely, the painted coiled steel strip is unfolded through the feeding mechanism and is conveyed to the forming mechanism;
the forming step, namely bending the two sides of the steel strip in the same direction through the shaping mechanism to obtain circular tubes to be welded and conveying the circular tubes to the welding mechanism, wherein the joint parts of the two bent sides of the steel strip form connecting bands to be welded, and rolling friction is adopted among the forming mechanism, the steel strip and the circular tubes to be welded so as to avoid scraping surface paint of the steel strip and the circular tubes to be welded;
a welding step, welding the connecting band of the circular tube to be welded by controlling the welding mechanism to form a welding band, and conveying the circular tube to be shaped obtained after welding to the shaping mechanism;
the method comprises the following steps of shaping, namely extruding the side wall of the circular tube to be shaped through a shaping mechanism to form a plurality of concave surfaces, performing edge transition between the concave surfaces to form a special-shaped home tube to be dried, conveying the special-shaped home tube to be dried to a drying mechanism, wherein rolling friction is formed among the shaping mechanism, the circular tube to be shaped and the special-shaped home tube to be dried so as to avoid scraping surface paint of the circular tube to be shaped and the special-shaped home tube to be dried;
a drying step, in which the drying mechanism is controlled to dry the special-shaped household pipe to be dried to obtain the special-shaped household to be sprayed, and the special-shaped household is conveyed to the fine line spraying mechanism;
spraying, namely spraying the welding belt of the special-shaped home pipe to be sprayed by controlling the fine wire spraying mechanism to obtain the special-shaped home pipe to be cut, and conveying the special-shaped home pipe to the flying saw cutting mechanism;
and a cutting step, namely controlling the flying saw cutting mechanism to cut and segment the special-shaped household pipe to be cut so as to finish the processing of the special-shaped household pipe.
As a further improvement of the present invention, the feeding mechanism includes a spot welding device, and the feeding step includes:
and the electric welding sub-step is used for welding the front steel strip and the rear steel strip end to end through the spot welding device.
As a further improvement of the invention, the feeding mechanism comprises a material storing and placing rack, and the feeding step further comprises the following steps:
a material storage substep, wherein partial steel strips are automatically stored in the steel strip conveying process through the material storage and discharge rack;
and the material discharging substep is used for automatically discharging stored partial steel strips in the welding process of the previous steel strip and the next steel strip through the material storing and discharging rack so as to maintain the continuous work of the subsequent stations.
As a further improvement of the present invention, the welding mechanism includes an insertion rod, and the welding step includes:
and an alignment sub-step of controlling the insertion rod to be inserted into the connecting band of the round pipe to be welded so as to prevent the round pipe to be welded from rotating along the central axis.
As a further improvement of the present invention, a welding slag scraping mechanism is provided, and a welding slag scraping step is further provided between the welding step and the shaping step, wherein the welding slag scraping step includes scraping the welding slag on the welding strip by the welding slag scraping mechanism and conveying the welding slag to the shaping mechanism.
As a further improvement of the invention, a polishing and grinding mechanism is provided, a polishing and grinding step is also provided between the welding slag scraping step and the shaping step, and the polishing and grinding step comprises the steps of polishing and grinding the welding belt by controlling the polishing and grinding mechanism so that the welding belt is flat and is conveyed to the shaping mechanism.
As a further improvement of the present invention, the setting mechanism comprises a clamping assembly and a setting assembly, and the setting step comprises:
the clamping sub-step is that the outer surface of the round pipe to be shaped is tightly pressed through the clamping assembly to keep the roundness of the round pipe to be shaped and the round pipe to be shaped is conveyed to the shaping assembly, and rolling friction is formed between the clamping assembly and the round pipe to be shaped so as to avoid scraping surface paint of the round pipe to be shaped;
and the shaping substep is used for extruding the side wall of the circular pipe to be shaped through the shaping assembly to form the special-shaped household pipe to be dried and conveying the special-shaped household pipe to the drying mechanism, wherein the shaping assembly and the circular pipe to be shaped and the special-shaped household pipe to be dried are in rolling friction to avoid scraping the surface paint of the circular pipe to be shaped and the special-shaped household pipe to be dried.
As a further improvement of the present invention, a straightening mechanism is provided, a straightening step is further provided between the shaping step and the blow-drying step, the straightening step includes straightening the special-shaped home pipe to be blow-dried by the straightening mechanism to ensure the pipe body shape straightness and prevent the special-shaped home pipe to be blow-dried from rotating along the central axis, and conveying the straightened special-shaped home pipe to be blow-dried to the blow-drying mechanism.
As a further improvement of the invention, a heating device is provided, a heating step is further provided between the drying step and the spraying step, and the heating step comprises heating the special-shaped settling pipe to be sprayed by controlling the heating device, and conveying the heated special-shaped settling pipe to be sprayed to the fine wire spraying mechanism.
As a further improvement of the invention, the heating temperature of the special-shaped installation pipe to be sprayed is 250-350 ℃.
The invention has the beneficial effects that:
1. in the production process of the special-shaped household pipe, the production equipment cannot damage paint on the surfaces of other parts except the connecting belt of the steel belt, so that the paint-coated steel belt is used as a raw material for processing. The paint on the surface of the steel strip plays a role in protecting the steel strip and preventing rust, and is convenient for storage and transportation of the steel strip.
2. Through optimizing process improvement technology, integrate into an integrated into one piece's assembly line with a plurality of links such as material loading, shaping, welding, design, weather, spraying, cutting, promote degree of automation, reduce manual work proportion and cost of labor, reduce the unsafe factor of operation personnel and people, improve work safety nature, reduce the possibility of occurence of failure.
3. Due to the improvement and innovation of the process, the original process of firstly manufacturing the pipe and then spraying paint is changed into the process of directly spraying paint on the steel belt, compared with the process of directly spraying paint on the steel pipe, the steel belt has the advantages of smooth surface and large area, and the waste of paint is greatly reduced. And only need use fine rule spraying mechanism after the tubulation shaping, the paint on the quantitative width filling up welding area of accurate spraying both can, very big reduction the quantity of later stage paint.
Drawings
FIG. 1 is a schematic perspective view of a profiled home tube;
FIG. 2 is a sequence diagram of steps of the present invention;
FIG. 3 is a flow chart of the present invention;
FIG. 4 is a schematic perspective view of the production line of the present invention;
FIG. 5 is a schematic perspective view of a material storing and placing rack;
FIG. 6 is a schematic perspective view of the forming mechanism;
FIG. 7 is a schematic perspective view of the driving roll and the driven roll of the forming mechanism;
FIG. 8 is a perspective view of the welding mechanism;
fig. 9 is a schematic perspective view of a slag scraping mechanism;
FIG. 10 is a schematic perspective view of the setting mechanism;
FIG. 11 is a perspective view of the clamping assembly;
FIG. 12 is a perspective view of the active roll on the clamping assembly;
FIG. 13 is a perspective view of the active rollers on the sizing assembly;
fig. 14 is a perspective view of the alignment mechanism;
FIG. 15 is a perspective view of the blow drying mechanism;
FIG. 16 is a perspective view of the heating device;
FIG. 17 is a schematic perspective view of a thin wire spray mechanism;
fig. 18 is a schematic perspective view of the flying saw cutting mechanism.
Reference numerals: 1. a feeding mechanism; 11. rotating the material placing disc; 12. a material storing and placing frame; 121. a guide roller; 122. a moving roller; 13. a spot welding device; 2. a molding mechanism; 21. forming the assembly; 22. forming a driving component; 3. a welding mechanism; 31. a solid-state high-frequency welding machine; 32. a rod is inserted; 33. a grip roller; 4. a shaping mechanism; 41. a clamping assembly; 411. driving rollers; 4111. an annular groove; 4112. an annular closed curved surface; 412. an active mounting bracket; 413. a driven roll; 414. a driven mounting bracket; 42. a sizing assembly; 43. a shaping driving component; 5. a blow-drying mechanism; 51. drying the mounting frame; 52. an air-blowing sleeve; 53. a blowing nozzle; 6. a fine line spraying mechanism; 61. spraying a mounting rack; 62. a linear showerhead; 7. a flying saw cutting mechanism; 71. a slide rail; 72. mounting a plate; 73. a guide sleeve; 74. cutting the motor; 75. cutting the air cylinder; 8. a slag scraping mechanism; 81. scraping the mounting rack from the welding slag; 82. an elastic scraper; 9. a straightening mechanism; 91. straightening the roller; 92. straightening the mounting rack; 10. a heating device; 20. polishing grinding machanism.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 2, 3 and 4, the production process of the special-shaped home tube according to the embodiment includes a feeding mechanism 1, a forming mechanism 2, a welding mechanism 3, a shaping mechanism 4, a blow-drying mechanism 5, a fine wire spraying mechanism 6 and a flying saw cutting mechanism 7, and includes a feeding step, a forming step, a welding slag scraping step, a polishing and grinding step, a shaping step, a straightening step, a blow-drying step, a heating step, a spraying step and a cutting step which are sequentially performed.
Referring to fig. 3, 4 and 5, the feeding step includes that the painted rolled steel strip is unfolded and conveyed to the forming mechanism 2 through the feeding mechanism 1, the feeding mechanism 1 includes a storage and discharge frame 12, and the feeding step further includes: a storage substep, namely, automatically storing part of the steel strip in the steel strip conveying process through a storage discharging frame 12; and a discharging substep, wherein a part of stored steel strips are automatically discharged in the welding process of the previous steel strip and the next steel strip through the material storing and discharging frame 12 so as to maintain the continuous work of the subsequent stations.
Referring to fig. 4 and 5, the feeding mechanism 1 includes a rotary discharging tray 11 for placing the steel strip coil and a storage discharging frame 12 for guiding the steel strip, a guide roller 121 for guiding the steel strip and a moving roller 122 for storing the steel strip are disposed on the storage discharging frame 12, the moving roller 122 is slidably connected to the storage discharging frame 12, the moving roller 122 is horizontally disposed and the moving roller 122 slides in a vertical direction, and the steel strip enters the next station after entering the storage discharging frame 12 from the rotary discharging tray 11. Rotatory blowing dish 11 can be provided with two, two rotatory blowing dishes 11 used in turn, spot welding device 13 sets up between rotatory blowing dish 11 and storage blowing frame 12, after the steel band book on a rotatory blowing dish 11 uses up, operating personnel can be manual pass through spot welding device 13 welding with the head end of the steel band book on this steel band book and another rotatory blowing dish 11, and among the operating personnel welding process, follow-up station need not shut down, the steel band will be strained, removal roller 122 on the storage blowing frame 12 is upwards moved by the steel band pulling this moment, storage blowing frame 12 realizes the blowing, after operating personnel spot welding is accomplished, removal roller 122 moves downwards under the action of gravity and stores the material again, when the enough staff spot welding of steel band that storage blowing frame 12 stored, the continuous work of follow-up station.
Referring to fig. 3, 4, 6 and 7, the forming step includes bending two sides of the steel strip in the same direction through the shaping mechanism 4 to obtain circular tubes to be welded, and conveying the circular tubes to the welding mechanism 3, wherein the connecting bands to be welded are formed at the joint of the two bent sides of the steel strip, and rolling friction is formed between the forming mechanism 2 and the steel strip and the circular tubes to be welded so as to avoid scraping the steel strip and paint on the surfaces of the circular tubes to be welded.
Referring to fig. 4, 6 and 7, the forming mechanism 2 includes a plurality of forming assemblies 21 and a plurality of forming driving assemblies 22, the forming driving assemblies 22 are connected to the forming assemblies 21 and drive the forming assemblies 21 to work, each forming assembly 21 includes a driving roller 411 and a driving mounting rack 412, the driving rollers 411 are arranged in parallel, two ends of each driving roller 411 are rotatably connected to the driving mounting racks 412 on two sides, the two driving rollers 411 on the forming assemblies 21 form a male die and a female die which are matched with each other, and the steel strip is extruded by the driving rollers 411 on each forming assembly 21 in a state that the steel strip sequentially passes through each forming assembly 21, so that two sides of the steel strip are bent gradually in the same direction to obtain circular tubes to be welded; the active roll 411 is connected to the forming drive assembly 22 or the shaping drive assembly 43. Two driven rollers 413 and a driven mounting frame 414 used for mounting the driven rollers 413 are arranged between two adjacent forming assemblies 21, the two driven rollers 413 are arranged in parallel, the central axes of the driven rollers 413 are perpendicular to the central axis of the driving roller 411, the driven rollers 413 are rotatably connected with the driven mounting frame 414, annular grooves 4111 are also formed in the roller bodies of the driven rollers 413 along the circumferential direction, and the annular grooves 4111 of the driven rollers 413 between the forming assemblies 21 are used for clamping steel strips and guiding the steel strips to be bent into round pipes to be welded. The forming mechanism 2 may be disposed on a processing table, and the forming driving assembly 22 is fixed on the processing table. The number of the molding assemblies 21 is preferably 8. The feeding mechanism 1 conveys the painted steel strip to the forming assemblies 21, each forming assembly 21 drives the steel strip to be conveyed, and the driving rollers 411 on the forming assemblies 21 extrude and bend the steel strip, and the shapes of the driving rollers 411 on the forming assemblies 21 are different, so that after the steel strip is extruded and conveyed by the driving rollers 411 on the forming assemblies 21, the two sides of the steel strip are overturned gradually in the same direction, and finally the steel strip forms a circular tube to be welded. The driven rollers 413 are provided to assist in bending the steel pipe into a round pipe to be welded. The central axis of the driven roller 413 is perpendicular to the central axis of the driving roller 411, so that the steel strip and the circular tube to be shaped can be bent, clamped and extruded at different angles, and the bending, clamping and extruding effects are better.
Referring to fig. 3, 4 and 8, the welding step includes welding the connecting band of the round tube to be welded by controlling the welding mechanism 3 to form a welding band, and conveying the welded round tube to be shaped to the shaping mechanism 4; the welding mechanism 3 comprises an inserting rod 32, and the welding step comprises the following steps: alignment substep, the control pin 32 is inserted into the connecting band of the round tube to be welded to avoid rotation of the round tube to be welded along the central axis.
Referring to fig. 4 and 8, the welding mechanism 3 includes a solid-state high-frequency welder 31 for welding the circular pipes to be welded, an insertion rod 32 for inserting into a connecting band of the circular pipes to be welded, and two clamping rollers 33 for clamping the circular pipes to be welded, the insertion rod 32 is disposed between the forming mechanism 2 and the solid-state high-frequency welder 31, the clamping rollers 33 are all vertically disposed, and the clamping rollers 33 are disposed between the solid-state high-frequency welder 31 and the forming mechanism 2. Solid-state high frequency welding machine 31 installs on the processing table, and inserted bar 32 is fixed in on the table through a spacing mounting bracket, and inserted bar 32 inserts treats welding pipe connecting band in, can treat that the welding pipe carries on spacingly, avoids the pipe to take place to rotate, ensures that follow-up fine rule spraying mechanism 6 can accurately spray paint to the welding seam area, all be provided with on two pinch rolls 33's the roller body and treat the groove that the welding pipe matches, and two pinch rolls 33 treat the welding pipe and extrude. And after passing through the heating coil of the solid-state high-frequency welding machine 31, the circular pipe to be welded is extruded by the clamping roller 33, so that the connecting belt of the circular pipe to be welded is bonded to complete welding.
Referring to fig. 3, 4 and 9, the welding slag scraping step includes providing a welding slag scraping mechanism 8, scraping the welding slag on the welding strip by the welding slag scraping mechanism 8, and conveying the welding slag to the shaping mechanism 4.
Referring to fig. 4 and 9, the welding slag scraping mechanism 8 includes a welding slag scraping mounting frame 81 and an elastic scraper 82, one end of the elastic scraper 82 is fixed on the welding slag scraping mounting frame 81, and the other end of the elastic scraper 82 faces the welding belt and is attached to the surface of the welding belt. The welding slag scraping and mounting frame 81 can be fixed on the processing table plate, and the elastic scrapers 82 can be arranged in a plurality along the conveying direction of the round pipe to be shaped. Treat the design pipe transportation process, elasticity scraper 82 is laminated with the welding strip surface of treating the design pipe all the time, and elasticity scraper 82 can polish the unsmooth department of welding strip to improve the surface smoothness of the design pipe of undetermining.
Referring to fig. 3 and 4, the polishing step includes providing a polishing mechanism 20, and the polishing step includes polishing the welding strip by controlling the polishing mechanism 20 so that the welding strip is flat and is conveyed to the shaping mechanism 4.
The polishing and grinding mechanism 20 comprises a motor and a rotating disk, the outer side surface of the rotating disk fixes a steel wire ball, and when the motor drives the rotating disk to rotate, the steel wire ball on the rotating disk grinds the welding belt, so that the coding flatness of the welding belt is further improved.
Referring to fig. 3, fig. 4, fig. 10, fig. 11, fig. 12 and fig. 13, the shaping step includes extruding the side wall of the circular tube to be shaped through the shaping mechanism 4 to form a plurality of concave surfaces, the concave surfaces are transited through edges to form the special-shaped home tube to be dried, the special-shaped home tube to be dried is conveyed to the drying mechanism 5, and the surface paint of the special-shaped home tube to be dried is scraped by rolling friction between the shaping mechanism 4 and the special-shaped home tube to be dried and the special-shaped circular tube to be dried. The shaping mechanism 4 comprises a clamping component 41 and a shaping component 42, and the shaping step comprises the following steps: a clamping sub-step, wherein the outer surface of the round pipe to be shaped is pressed through a clamping assembly 41 to keep the roundness of the round pipe to be shaped and is conveyed to a shaping assembly 42, and rolling friction is formed between the clamping assembly 41 and the round pipe to be shaped so as to avoid scraping surface paint of the round pipe to be shaped; and in the shaping sub-step, the side wall of the round tube to be shaped is extruded through the shaping assembly 42 to form a special-shaped household tube to be dried, and the round tube to be shaped is conveyed to the drying mechanism 5, and the shaping assembly 42 and the round tube to be shaped and the special-shaped household tube to be dried are in rolling friction to avoid scraping the round tube to be shaped and the surface paint of the special-shaped household tube to be dried.
Referring to fig. 4, 10, 11, 12, and 13, the shaping mechanism 4 includes a plurality of clamping assemblies 41, a plurality of shaping assemblies 42, and a plurality of shaping driving assemblies 43, the plurality of clamping assemblies 41 and the plurality of shaping assemblies 42 are provided, each of the plurality of shaping driving assemblies 43 is connected with the clamping assemblies 41 and the plurality of shaping assemblies 42 and drives the clamping assemblies 41 and the plurality of shaping assemblies 42 to move, a round pipe to be shaped sequentially enters each of the plurality of shaping assemblies 42 through each of the plurality of clamping assemblies 41 and is extruded to obtain a special-shaped home pipe to be dried, each of the clamping assemblies 41 and the plurality of shaping assemblies 42 includes a driving roll 411 and a driving mounting rack 412 for mounting the driving roll 411, two ends of the driving roll 411 are rotatably connected with the driving mounting racks 412 on two sides, a ring groove 4111 is formed in a roll body of the driving roll 411 on the clamping assembly 41 in a circumferential direction, a cross section of the ring groove 4111 of the driving roll on the clamping assembly 41 is configured to be an arc shape fitted with the round pipe to be shaped, the driving roller 411 on the clamping assembly 41 presses the outer surface of the round pipe to be shaped in a rotating state to keep the roundness of the round pipe to be shaped and drive the round pipe to be shaped to be conveyed to the shaping assembly 42; the annular groove 4111 of the driving roller 411 on the shaping assembly 42 is formed by splicing a plurality of coaxially arranged annular closed curved surfaces 4112, and the driving roller 411 on the shaping assembly 42 extrudes the side wall of a to-be-shaped circular tube entering the annular groove 4111 in a rotating state to form a concave surface and an edge; the active roller 411 is connected to the setting drive assembly 43. Two driven rollers 413 and a driven mounting frame 414 for mounting the driven rollers 413 are arranged between two adjacent clamping assemblies 41 and two adjacent shaping assemblies 42, the two driven rollers 413 are arranged in parallel, the central axis of the driven rollers 413 is perpendicular to the central axis of the driving roller 411, the driven rollers 413 are rotatably connected with the driven mounting frame 414, annular grooves 4111 are also formed in the roller body of the driven rollers 413 along the circumferential direction, the cross section of the annular groove 4111 of the driven roller 413 between the clamping assemblies 41 is set to be in an arc shape fitted with a special household pipe to be dried, and the annular groove 4111 of the driven roller 413 between the shaping assemblies 42 is formed by splicing a plurality of coaxially arranged annular closed curved surfaces 4112. The number of the clamping assemblies 41 is preferably 6, and the number of the shaping assemblies 42 is preferably 6. When the round pipe to be shaped is conveyed into the clamping assemblies 41, the side wall of the annular groove 4111 of the driving roller 411 on each clamping assembly 41 is attached to the side wall of the round pipe to be shaped, so that the round pipe to be shaped is clamped and the roundness of the round pipe to be shaped is kept, and meanwhile, the rotating driving roller 411 drives the round pipe to be shaped to continuously enter the shaping assembly 42. The annular grooves 4111 of the driving rollers 411 on the shaping assemblies 42 extrude the side walls of the circular pipes to be shaped, so that the circular pipes to be shaped are extruded, drawn and shaped into a preset shape, and meanwhile, the rotating driving rollers 411 drive the shaped special household pipes to be dried to be conveyed to subsequent stations. Through the setting of driven roll 413, can assist and wait to stereotype the pipe design. The central axis of the driven roller 413 is perpendicular to the central axis of the driving roller 411, so that the steel strip and the round pipe to be shaped can be bent, clamped and extruded at different angles, and the bending, clamping and extruding effects are better.
Referring to fig. 3, 4 and 14, the straightening step includes providing a straightening mechanism 9, straightening the special-shaped home pipe to be dried by blowing through the straightening mechanism 9 to ensure the pipe body shape straightness and avoid the special-shaped home pipe to be dried to rotate along the central axis, and conveying the straightened special-shaped home pipe to be dried to the drying mechanism 5.
Referring to fig. 4, as shown in fig. 14, alignment mechanism 9 is including two alignment rolls 91 and the alignment mounting bracket 92 that is used for installing alignment roll 91, the central axis of two alignment rolls 91 parallel arrangement and alignment roll 91 and the central axis mutually perpendicular of initiative roll 411, alignment roll 91 rotates with alignment mounting bracket 92 to be connected, alignment roll 91's the roll body is gone up and has also seted up ring channel 4111 along the circumferencial direction, alignment roll 91's ring channel 4111 inner wall sets up to the curved surface that the heterotypic home pipe of waiting to weather attaches mutually, two alignment roll 91 centre gripping are waited to weather heterotypic home pipe and are carried out the alignment in order to wait to weather heterotypic home pipe. Alignment mounting bracket 92 can be fixed in on the processing table, and alignment mounting bracket 92 is including alignment fixing base and sliding connection in the alignment sliding block on the alignment fixing base, and alignment roll 91 rotates with the alignment sliding block to be connected, still is provided with the alignment lead screw that is used for driving the alignment sliding block gliding from top to bottom on the alignment fixing base, and the vertical setting of alignment lead screw and alignment fixing base spiro union, alignment lead screw lower extreme rotate with the alignment sliding block to be connected, and the upper end is provided with the alignment hand wheel of being convenient for rotate the alignment lead screw. The rotatory alignment hand wheel of operating personnel accessible drives the alignment sliding block and reciprocates to drive two alignment rolls 91 and reciprocate in step, thereby highly adjusting alignment roll 91, make alignment roll 91 can treat carrying out the accurate alignment of weathering heterotypic home pipe. The straightening mechanism 9 and the shaping mechanism 4 are arranged at intervals, and the straightening rollers 91 have the functions of correcting deviation and guiding for the special household pipes to be dried so as to straighten the special household pipes to be dried.
Referring to fig. 3, 4 and 15, the drying step includes drying the special-shaped household pipe to be dried by controlling the drying mechanism 5 to obtain the special-shaped household to be sprayed, and conveying the special-shaped household to the fine line spraying mechanism 6.
Referring to fig. 4 and 15, the blow-drying mechanism 5 includes a blow-drying mounting frame 51, a blow sleeve 52 for allowing a round tube to be dried to pass through, and a blow nozzle 53 fixed on the blow sleeve 52, the blow sleeve 52 is fixedly connected to the blow-drying mounting frame 51, the blow nozzle 53 is externally connected with an air supply device through a conduit, and a head of the blow nozzle 53 passes through the blow sleeve 52 and is communicated with the inside of the blow sleeve 52. The blowing nozzle 53 blows air into the blowing sleeve 52 in a working state, and the setting of the blowing sleeve 52 ensures that the air flow is initially limited in the blowing sleeve 52, so that the air flow cannot be quickly dissipated, the air flow strength is favorably maintained, and the drying effect is improved.
Referring to fig. 3, 4 and 16, the heating step includes providing the heating device 10, heating the to-be-sprayed special-shaped dwell tube to 250-350 ℃ by controlling the heating device 10, preferably to 300 ℃, and conveying the heated to-be-sprayed special-shaped dwell tube to the thin line spraying mechanism 6.
Referring to fig. 4 and 16, the heating device 10 is a solid high-frequency induction heating device 10, the special-shaped settling pipe to be sprayed penetrates through a heating coil of the solid high-frequency induction heating device 10, and in the working state of the solid high-frequency induction heating device 10, the special-shaped settling pipe to be sprayed is heated quickly, so that residual moisture is further dried quickly, and the influence of the residual moisture on paint repair of the welding strip of the special-shaped settling pipe to be sprayed is avoided. Meanwhile, the heated special-shaped settling pipe to be sprayed can rapidly dry the coating by utilizing the temperature of the pipe body during spraying, so that the phenomenon that the undried coating is damaged in the next process is avoided, and the spraying effect is ensured.
Referring to fig. 3, 4 and 17, the spraying step includes spraying the welding strip of the to-be-sprayed special-shaped home pipe by controlling the thin wire spraying mechanism 6 to obtain the to-be-cut special-shaped home pipe, and conveying the to-be-cut special-shaped home pipe to the flying saw cutting mechanism 7.
Referring to fig. 4 and 17, the thin wire coating mechanism 6 includes a coating mount 61 and a linear head 62 fixed to the coating mount 61, and the linear head 62 faces the welding belt. The arrangement of the linear sprayer 62 over the welding seam of the special-shaped household pipe to be sprayed realizes the paint repair of the welding strip on the special-shaped household pipe to be sprayed, and the paint repair effect is good.
Referring to fig. 3, 1 and 18, in the cutting step, a flying saw cutting mechanism 7 is provided, the flying saw cutting mechanism 7 receives the special-shaped home pipe to be cut, and the cutting step includes cutting and segmenting the special-shaped home pipe to be cut by controlling the flying saw cutting mechanism 7 to complete the processing of the special-shaped home pipe.
Referring to fig. 4 and 18, the flying saw cutting mechanism 7 includes a slide rail 71, a length direction of the slide rail 71 is arranged along a length direction of the special-shaped home pipe to be cut, a mounting plate 72 is slidably connected above the slide rail 71, a sliding driving mechanism for driving the mounting plate 72 to slide is further provided on the slide rail 71, a guide sleeve 73 for the special-shaped home pipe to be cut to pass through is fixed on the mounting plate 72, a saw blade is provided at an outlet of the guide sleeve 73, and a cutting motor 74 for driving the saw blade to rotate and a cutting cylinder 75 for driving the saw blade to be close to or far away from the special-shaped home pipe to be cut are further provided on the mounting plate 72. Mounting panel 72 is kept away from fine rule spraying mechanism 6 one side and is fixed with the riser, and articulated on the riser have a cutting mounting bracket, and saw bit and cutting motor 74 are all installed on the cutting mounting bracket, and cutting cylinder 75 installs on mounting panel 72, and cutting cylinder 75's telescopic link is connected with the cutting mounting bracket, drives the upset of cutting mounting bracket under the 75 operating condition of cutting cylinder for the saw bit is close to or keeps away from and treats cutting heterotypic home pipe. The slide driving mechanism is a mechanism capable of driving the mounting plate 72 to slide on the slide rail 71. The to-be-cut special-shaped household pipe continuously penetrates through the guide sleeve 73, the sliding driving mechanism drives the mounting plate 72 to slide towards the conveying direction of the to-be-cut special-shaped household pipe, the sliding speed of the mounting plate 72 is the same as the conveying speed of the to-be-cut special-shaped household pipe, the to-be-cut special-shaped household pipe is cut at the moment, and the to-be-cut special-shaped household pipe can be prevented from being extruded to a saw blade in the cutting process. Under cutting motor 74 drove the saw bit rotation state, cutting cylinder 75 is once flexible, drives the saw bit promptly and treats cutting abnormal shape house pipe cutting once, and the abnormal shape house pipe after the cutting falls to slide rail 71 in, and this fly saw cutting mechanism 7 can treat cutting abnormal shape house pipe and cut, and simple structure is practical.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (8)
1. The utility model provides a production technology of heterotypic house pipe, its characterized in that provides feed mechanism (1), forming mechanism (2), welding mechanism (3), forming mechanism (4), weathers mechanism (5), fine rule spraying mechanism (6) and flies to saw cutting mechanism (7), includes following step:
a feeding step, namely, the coil steel strip after painting is unfolded through the feeding mechanism (1) and is conveyed to the forming mechanism (2);
the method comprises the following steps of (1) forming, namely bending two sides of a steel belt in the same direction through a forming mechanism (2) to obtain circular pipes to be welded, conveying the circular pipes to be welded to the welding mechanism (3), forming connecting belts to be welded at the joint parts of the two bent sides of the steel belt, and enabling rolling friction to be formed among the forming mechanism (2), the steel belt and the circular pipes to be welded so as to avoid scraping paint on the surfaces of the steel belt and the circular pipes to be welded;
a welding step, namely welding the connecting band of the circular tube to be welded by controlling the welding mechanism (3) to form a welding band, and conveying the circular tube to be shaped obtained after welding to the shaping mechanism (4);
the method comprises the following steps of shaping, namely extruding the side wall of the circular tube to be shaped through a shaping mechanism (4) to form a plurality of concave surfaces, enabling the concave surfaces to be transited through edges to form the special-shaped home tube to be dried, conveying the special-shaped home tube to be dried to a drying mechanism (5), and enabling rolling friction to be formed among the shaping mechanism (4), the circular tube to be shaped and the special-shaped home tube to be dried so as to avoid scraping paint on the surface of the circular tube to be shaped and the surface of the special-shaped home tube to be dried;
a drying step, in which the special household pipe to be dried is dried by controlling the drying mechanism (5) to obtain the special household pipe to be sprayed, and the special household pipe is conveyed to the fine line spraying mechanism (6);
spraying, namely spraying the welding belt of the special-shaped home pipe to be sprayed by controlling the thin line spraying mechanism (6) to obtain the special-shaped home pipe to be cut, and conveying the special-shaped home pipe to the flying saw cutting mechanism (7);
a cutting step, wherein the flying saw cutting mechanism (7) is controlled to cut and segment the special-shaped household pipe to be cut so as to complete the processing of the special-shaped household pipe;
the welding mechanism (3) comprises an insertion rod (32), and the welding step comprises the following steps:
an alignment sub-step of controlling the insertion rod (32) to be inserted into the connecting band of the circular pipe to be welded so as to prevent the circular pipe to be welded from rotating along the central axis;
the shaping mechanism (4) comprises a clamping component (41) and a shaping component (42), and the shaping step comprises the following steps:
a clamping sub-step, wherein the outer surface of the round pipe to be shaped is pressed by the clamping assembly (41) to keep the roundness of the round pipe to be shaped and is conveyed to the shaping assembly (42), and rolling friction is formed between the clamping assembly (41) and the round pipe to be shaped so as to avoid scraping the paint on the surface of the round pipe to be shaped;
and in the shaping substep, the side wall of the round pipe to be shaped is extruded through the shaping assembly (42) to form the special-shaped household pipe to be dried, and the special-shaped household pipe to be dried is conveyed to the drying mechanism (5), and rolling friction is adopted between the shaping assembly (42) and the round pipe to be shaped and the special-shaped household pipe to be dried so as to avoid scraping surface paint of the round pipe to be shaped and the special-shaped household pipe to be dried.
2. The process for producing a profiled home tube according to claim 1, wherein: feed mechanism (1) is including spot welding device (13), the material loading step including:
and the electric welding substep is used for welding the front steel strip and the rear steel strip end to end through the spot welding device (13).
3. The process for producing a profiled home tube according to claim 2, wherein: feed mechanism (1) is including storing blowing frame (12), the material loading step still including:
a material storing substep, wherein a part of steel strip is automatically stored in the steel strip conveying process through the material storing and discharging frame (12);
and a discharging substep, wherein the stored steel strip is automatically discharged by the material storing and discharging frame (12) in the welding process of the former steel strip and the latter steel strip so as to maintain the continuous work of the subsequent station.
4. The process for producing a profiled home tube according to claim 1, wherein: and providing a welding slag scraping mechanism (8), wherein a welding slag scraping step is also arranged between the welding step and the shaping step, and the welding slag scraping step comprises scraping the welding slag on the welding strip through the welding slag scraping mechanism (8) and conveying the welding slag to the shaping mechanism (4).
5. The process for producing a profiled home tube according to claim 4, wherein: and providing a polishing and grinding mechanism (20), wherein a polishing and grinding step is also arranged between the welding slag scraping step and the shaping step, and the polishing and grinding step comprises the step of polishing and grinding the welding belt by controlling the polishing and grinding mechanism (20) so that the welding belt is flat and is conveyed to the shaping mechanism (4).
6. The process for producing a profiled home tube according to claim 1, wherein: provide alignment mechanism (9), the design step with it has the alignment step in addition to weather between the step to weather, the alignment step includes through alignment mechanism (9) is right treat to weather abnormal shape house and manage and carry out the alignment in order to guarantee pipe shaft molding straightness and avoid treat to weather abnormal shape house and manage along the central axis rotation, and will be aligned after the abnormal shape house of waiting to weather is managed and is carried to weather mechanism (5) at home.
7. The process for producing a profiled home tube according to claim 1, wherein: providing heating device (10), weather the step with the heating step in addition between the spraying step, the heating step includes through control heating device (10) is right wait to spray heterotypic house pipe heats, and will heat the back wait to spray heterotypic house pipe and carry to fine rule spraying mechanism (6).
8. The process for producing a profiled home tube according to claim 7, wherein: the heating temperature of the special-shaped household pipe to be sprayed is 250-350 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910927877.8A CN110587321B (en) | 2019-09-27 | 2019-09-27 | Production process of special-shaped household pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910927877.8A CN110587321B (en) | 2019-09-27 | 2019-09-27 | Production process of special-shaped household pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110587321A CN110587321A (en) | 2019-12-20 |
| CN110587321B true CN110587321B (en) | 2022-09-30 |
Family
ID=68864322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910927877.8A Active CN110587321B (en) | 2019-09-27 | 2019-09-27 | Production process of special-shaped household pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110587321B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112605669B (en) * | 2020-12-21 | 2021-06-15 | 杭州光帝新能源科技有限公司 | Street lamp processing welding set |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106745A (en) * | 1986-10-04 | 1987-04-29 | 刘虎林 | The production technology of galvanized welded pipe |
| CN2186610Y (en) * | 1994-03-19 | 1995-01-04 | 贺鸿恩 | Pipe welding machine |
| CN101190489A (en) * | 2006-11-23 | 2008-06-04 | 天津市瀚隆镀锌有限公司 | Method for processing galvanized welded pipe for low pressure fluid convey |
| CN201324764Y (en) * | 2008-12-29 | 2009-10-14 | 大连三高重工设备有限公司 | Machine unit for welding titanium steel tube with accurate plasma |
| CN103801583B (en) * | 2014-02-13 | 2016-04-13 | 风范绿色建筑（常熟）有限公司 | Large gauge directly becomes square tube processing technology |
| CN205289309U (en) * | 2016-01-26 | 2016-06-08 | 安钢集团华德重工装备有限公司 | High strength side's pipe production line |
| CN107127577B (en) * | 2017-04-06 | 2023-09-15 | 建华建材（中国）有限公司 | Rolling welding equipment |
| CN109622685A (en) * | 2018-12-20 | 2019-04-16 | 芜湖恒美电热器具有限公司 | Steel band is at wound steel pipe device |
| CN109909756A (en) * | 2019-04-29 | 2019-06-21 | 全南阳城机械制造有限公司 | A kind of tuber |
-
2019
- 2019-09-27 CN CN201910927877.8A patent/CN110587321B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110587321A (en) | 2019-12-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104019295B (en) | Steel frame steel-plastic composite pipe and manufacturing method and production line of steel frame steel-plastic composite pipe | |
| CN107053810B (en) | A kind of steel plate color-coating production method and process units | |
| CN103948216B (en) | Full-automatic shoe sole paint spraying machine | |
| CN107953566B (en) | Warm limit space bar production line | |
| CN110587321B (en) | Production process of special-shaped household pipe | |
| CN102773304A (en) | Passive forming machine for steel-plastic compounded steel pipe | |
| CN110802002A (en) | Aluminum pipe surface resin coating system | |
| CN102632387A (en) | Automatic production line for full-continuous container section bar | |
| CN202274206U (en) | Tubing and strip with strengthened thermoplastic composite structural wall, and complete set of production apparatus thereof | |
| CN210677746U (en) | A special-shaped household pipe manufacturing equipment | |
| CN210677747U (en) | A special-shaped household pipe integrated molding equipment | |
| CN220759609U (en) | Arc wire sprayer | |
| CN204736433U (en) | Compound pipe turn -ups forming device | |
| CN110524259A (en) | A kind of abnormal shape household pipe integrated molding equipment | |
| CN204622629U (en) | A kind of polyurethane coating polyethylene is wound around insulating tube production line | |
| CN217759830U (en) | Full-automatic real mineral varnish three-dimensional all-in-one | |
| CN110524260B (en) | Special-shaped household pipe manufacturing equipment | |
| CN107081501A (en) | A kind of chamfering device and its processing method for narrow steel plate | |
| CN109263095B (en) | Production line of multifunctional polyurethane continuous casting polyethylene heat-insulation pipe | |
| CN108262987B (en) | Winding equipment and winding method for continuous fiber plastic composite pressure pipe | |
| CN101705463A (en) | Device for continuously hot dip galvanizing pipe | |
| CN207013223U (en) | Efficient active hot melt coating machine | |
| CN211247199U (en) | Aluminum pipe surface resin coating system | |
| CN116713153A (en) | Combined type production line of waveform beam steel guardrail for highway | |
| CN214162068U (en) | Production line for monorail conveyor track |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |