CN117416082A - Corrugated pipe and manufacturing process thereof - Google Patents
Corrugated pipe and manufacturing process thereof Download PDFInfo
- Publication number
- CN117416082A CN117416082A CN202311405775.2A CN202311405775A CN117416082A CN 117416082 A CN117416082 A CN 117416082A CN 202311405775 A CN202311405775 A CN 202311405775A CN 117416082 A CN117416082 A CN 117416082A
- Authority
- CN
- China
- Prior art keywords
- tube
- manufacturing process
- pipe
- raw materials
- corrugated pipe
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 48
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 238000001125 extrusion Methods 0.000 claims abstract description 25
- 238000000465 moulding Methods 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000003756 stirring Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 7
- 239000000110 cooling liquid Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D23/00—Producing tubular articles
- B29D23/18—Pleated or corrugated hoses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
- B29K2023/0608—PE, i.e. polyethylene characterised by its density
- B29K2023/065—HDPE, i.e. high density polyethylene
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to the field of corrugated pipes, in particular to a corrugated pipe and a manufacturing process thereof, comprising the following steps: s1, fully mixing raw material particles; s2, heating the raw material particles to obtain a raw material in a molten state; s3, adding the raw materials in a molten state into a forming device, extruding the raw materials in the molten state through the forming device, and rapidly cooling and forming to obtain the corrugated pipe; s4, introducing the corrugated pipe continuously molded at the rear end of the molding device into a cutting machine, and cutting the corrugated pipe into the required length according to the requirement. The forming device comprises a pressing part positioned at the front end and a forming part connected to the rear end of the pressing part. The forming part comprises a central tube positioned inside and a shell tube coaxially arranged outside the central tube, and the extrusion part extrudes raw materials in a molten state between the central tube and the shell tube. The invention effectively cools the raw materials and ensures the molding efficiency of the raw materials.
Description
Technical Field
The invention relates to the field of corrugated pipes, in particular to a corrugated pipe and a manufacturing process thereof.
Background
The corrugated pipe is a circular section, the outer circumference of the corrugated section is corrugated, the outer circumference surface of the corrugated section is uneven, the corrugated pipe is widely applied to petrochemical industry, instrument, aerospace industry, chemical industry, electric power industry, cement industry, metallurgy industry and other industries, and the corrugated pipe has the excellent characteristics of corrosion resistance, abrasion resistance, flexibility and the like.
When the corrugated pipe is prepared, the raw materials need to be cooled and molded, but most of the existing manufacturing processes cannot effectively cool the raw materials during preparation, so that the molding efficiency of the raw materials is ensured.
Disclosure of Invention
The invention aims to provide a corrugated pipe and a manufacturing process thereof, which are used for effectively cooling raw materials and ensuring the molding efficiency of the raw materials.
The aim of the invention is achieved by the following technical scheme:
a bellows manufacturing process comprising the steps of:
s1, fully mixing raw material particles;
s2, heating the raw material particles to obtain a raw material in a molten state;
s3, adding the raw materials in a molten state into a forming device, extruding the raw materials in the molten state through the forming device, and rapidly cooling and forming to obtain the corrugated pipe;
s4, introducing the corrugated pipe continuously molded at the rear end of the molding device into a cutting machine, and cutting the corrugated pipe into the required length according to the requirement.
The raw material is high-density polyethylene.
The heating is carried out to 230 ℃ in the step S2.
The forming device comprises a pressing part positioned at the front end and a forming part connected to the rear end of the pressing part.
The extrusion part is provided with a heating ring for ensuring that the raw materials are in a molten state.
The forming part comprises a central tube positioned inside and a shell tube coaxially arranged outside the central tube, and the extrusion part extrudes raw materials in a molten state between the central tube and the shell tube.
The inner wall of the shell tube is provided with a thread groove, and the front end of the shell tube is rotationally connected with the forming part.
The outer part of the shell pipe is rotated to form a cooling pipe, and two connecting pipes are arranged on the cooling pipe.
The two connecting pipes are respectively positioned at the two ends of the cooling pipe and are oppositely arranged.
The corrugated pipe is manufactured by the manufacturing process of the corrugated pipe, and the outer end of the corrugated pipe is provided with spiral lines.
Drawings
FIG. 1 is a schematic flow diagram of a bellows manufacturing process;
FIG. 2 is a schematic flow chart II of a bellows manufacturing process;
FIG. 3 is a schematic view of the structure of the molding apparatus;
FIG. 4 is a schematic cross-sectional view of a molding apparatus;
FIG. 5 is a schematic cross-sectional view of an extrusion lumen;
FIG. 6 is a schematic structural view of a spiral plate;
FIG. 7 is a schematic view of the structure of the housing tube;
FIG. 8 is a schematic cross-sectional structural view of the center tube;
FIG. 9 is a schematic view of a cooling tube;
FIG. 10 is a schematic view of the structure of the stirring frame;
fig. 11 is a schematic view of the structure of the plunger.
In the figure:
squeezing the lumen 101; a connecting seat tube 102; a fixing frame 103; a feed inlet 104;
a pressing shaft 201; a spiral plate 202;
a drive shaft 301; a housing tube 302; a thread groove 303;
a connection frame 401; taper pipe 402; a central tube 403; a closure plate 404; a chute 405; an air hole 406;
a cooling pipe 501; a drive ring 502; a stirring plate 503; a connection pipe 504;
rectangular tube 601; extension tube 602; a stirring frame 603; a tube head 604;
a plunger 701; an adjusting screw 702; a rod holder 703.
Detailed Description
As shown in fig. 1-11:
a bellows manufacturing process comprising the steps of:
s1, fully mixing raw material particles;
s2, heating the raw material particles to obtain a raw material in a molten state;
s3, adding the raw materials in a molten state into a forming device, extruding the raw materials in the molten state through the forming device, and cooling and forming to obtain the corrugated pipe;
s4, introducing the corrugated pipe continuously molded at the rear end of the molding device into a cutting machine, and cutting the corrugated pipe into the required length according to the requirement.
The raw material is high-density polyethylene.
The heating is carried out to 230 ℃ in the step S2.
As shown in fig. 1-11:
the forming device comprises a pressing part positioned at the front end and a forming part connected to the rear end of the pressing part.
The molten raw material is extruded to a molding part at the rear end by an extrusion part at the front end, and is molded.
Further:
the extrusion part is provided with a heating ring for ensuring that the raw materials are in a molten state.
The molding part comprises a central tube 403 positioned inside and a shell tube 302 coaxially arranged outside the central tube 403, and the extrusion part extrudes raw materials in a molten state into the central tube 403 and the shell tube 302, and the raw materials are cooled and molded to obtain a tube body.
The shell tube 302 is coaxially arranged outside the central tube 403, so that a tubular gap is formed between the central tube 403 and the shell tube 302, molten raw materials are extruded into the tubular gap, cooling molding is performed, and a tube body can be obtained.
Further:
the inner wall of the shell tube 302 is provided with a thread groove 303, and the front end of the shell tube 302 is rotatably connected with the forming part.
Through the setting of screw groove 303, the outside of raw materials in the tubular slit will receive the influence of screw groove 303, the shaping is given birth to the ripple to when the raw materials in the tubular slit cools off, can obtain the bellows of outside screw line, in order to guarantee that the bellows of outside screw line can be prepared in succession, drive shell pipe 302, make shell pipe 302 rotate, thereby screw groove 303 and the outside screw line cooperation of bellows on through shell pipe 302 form fashioned bellows and slide backward gradually, thereby the continuous preparation of the bellows of formation screw line.
As shown in fig. 1-11:
the outer part of the shell tube 302 is rotated with a cooling tube 501, and two connecting tubes 504 are arranged on the cooling tube 501.
During preparation, two connecting pipes 504 are connected with a cooling liquid circulation system, and a circulating pump of the cooling liquid circulation system is started, so that cooling liquid can be circulated into the cooling pipe 501, the shell pipe 302 is cooled, the corrugated pipe is cooled, the cooling forming efficiency of the corrugated pipe is improved, and the corrugated pipe with external spiral lines can continuously slide backwards.
Further:
two connection pipes 504 are respectively located at both ends of the cooling pipe 501 and are disposed opposite to each other.
By providing the two connection pipes 504 at a position far from each other on the cooling pipe 501, the cooling liquid can sufficiently circulate in the cooling pipe 501, and the cooling efficiency can be improved.
As shown in fig. 1-11:
the extrusion part comprises an extrusion cavity pipe 101, a connecting seat pipe 102, a charging port 104, an extrusion shaft 201 and a spiral plate 202; the rear end of the extrusion cavity tube 101 is coaxially fixed with a connecting seat tube 102, the rear end of the connecting seat tube 102 is rotationally connected with the front end of the shell tube 302, the front end of the extrusion cavity tube 101 is provided with a feed inlet 104, the extrusion shaft 201 rotates in the extrusion cavity tube 101, the spiral plate 202 is fixed on the extrusion shaft 201, and the heating ring is sleeved on the extrusion cavity tube 101.
During manufacturing, raw materials in a molten state are added into the extrusion cavity pipe 101 through the feed inlet 104, and meanwhile, the heating ring is started to heat the extrusion cavity pipe 101, so that the temperature in the extrusion cavity pipe 101 is ensured, and the raw materials are kept in the molten state; simultaneously, a first motor arranged on a supporting plate at the lower end of the extrusion cavity pipe 101 is started to drive the extrusion shaft 201, so that the spiral plate 202 is driven to continuously push and extrude raw materials to the connecting seat pipe 102 in a spiral mode, the raw materials enter the shell pipe 302, a tubular gap is formed between the central pipe 403 and the shell pipe 302 when the raw materials are extruded, and the quality of the corrugated pipe during molding is guaranteed.
As shown in fig. 1-11:
the pressing part also comprises a fixing frame 103; the forming part also comprises a connecting frame 401, a taper pipe 402 and a transmission shaft 301; the fixing frame 103 is fixed in the connecting seat tube 102, the taper tube 402 is coaxially fixed at the front end of the central tube 403, the connecting frame 401 is fixed at the front end of the taper tube 402, the connecting frame 401 is fixedly connected with the fixing frame 103 through bolts, the transmission shaft 301 rotates on a supporting plate below the connecting seat tube 102, and the transmission shaft 301 is in transmission connection with the shell tube 302.
The installation of the central tube 403 is formed by the arrangement of the fixing frame 103, the connecting frame 401 and the taper pipe 402, and the central tube 403 can be replaced by the detachable installation of the fixing frame 103 and the connecting frame 401, so that the inner diameter of the manufactured corrugated pipe is changed, and the thickness of the manufactured corrugated pipe is changed to be adjusted; meanwhile, the raw materials can conveniently enter between the central tube 403 and the shell tube 302 through the conical arrangement of the conical tube 402;
the second motor arranged on the supporting plate below the connecting seat tube 102 is used for driving the transmission mechanism 301, so that the shell tube 302 can be driven to rotate on the connecting seat tube 102, and the continuous preparation of the corrugated tube is ensured; simultaneously, through the cooperation of second motor and first motor rotational speed, can carry out regulation control to bellows ejection of compact speed.
As shown in fig. 1-11:
the forming part also comprises a driving ring 502 and a stirring plate 503; the driving ring 502 rotates at the front end between the cooling pipe 501 and the housing pipe 302, and a plurality of stirring plates 503 are uniformly fixed on the driving ring 502 and are all positioned in the cooling pipe 501, and the driving ring 502 is in driving connection with the driving shaft 301.
The transmission shaft 301 drives the shell tube 302 to rotate, and the transmission driving ring 502 drives the stirring plates 503 to rotate in the cooling tube 501, so that stirring of cooling liquid in the cooling tube 501 is formed, the cooling liquid in the cooling tube 501 is enabled to be uniform in temperature, and then the cooling effect on the corrugated tube is guaranteed.
As shown in fig. 1-11:
the forming device also comprises a rectangular pipe 601, an extension pipe 602, a stirring frame 603 and a pipe head 604; the rectangular pipe 601 runs through the extrusion axle 201, and the rear end of rectangular pipe 601 is fixed with extension pipe 602, and extension pipe 602 runs through mount 103 backward and rotates with the front end of taper pipe 402 to be connected, and stirring frame 603 is fixed at the rear end of extension pipe 602, and tube head 604 rotates at the front end of rectangular pipe 601.
Wherein, the tube head 604 is connected with a cold air supply system, so that cold air is led into the central tube 403 through the rectangular tube 601 and the extension tube 602, and the central tube 403 is cooled, so that the corrugated tube contacted with the central tube 403 is cooled, and the cooling efficiency is improved;
when the extrusion shaft 201 rotates, the rectangular pipe 601 is driven to rotate simultaneously, so that the stirring frame 603 is driven to rotate in the central pipe 403, and cold air in the central pipe 403 is stirred, so that uniformity of temperature of the cold air in the central pipe 403 is ensured, and then the cooling effect of the central pipe 403 is ensured.
As shown in fig. 1-11:
the forming device further comprises a blocking plate 404, a sliding groove 405, an air hole 406, a rod 701, an adjusting screw 702 and a rod rack 703; the rear end of the center tube 403 is fixed with a closure plate 404, the closure plate 404 is provided with an air release valve, the circumference of the inner wall of the center tube 403 is uniformly provided with a plurality of sliding grooves 405, each sliding groove 405 is internally provided with a plurality of air holes 406, a plurality of inserting rods 701 penetrate through the closure plate 404 and respectively slide in the plurality of sliding grooves 405, the rear ends of the inserting rods 701 are fixed with inserting rod frames 703, and an adjusting screw 702 rotates on the inserting rod frames 703 and is in threaded connection with the closure plate 404.
When the plurality of inserting rods 701 are completely inserted into the plurality of sliding grooves 405, the plurality of inserting rods 701 plug all air holes 406, at the moment, cold air enters the central tube 403, the central tube 403 is cooled, the corrugated tube is cooled through the central tube 403, and meanwhile, the pressure is relieved through the air release valve, so that the cold air always enters the central tube 403, and the cooling effect is guaranteed;
when the adjusting screw 702 is rotated to enable the adjusting screw 702 to move on the blocking plate 404 and drive the inserting rod frame 703 to move, the inserting rod frame 703 drives the inserting rods 701 to slide out of the sliding groove 405 simultaneously, so that air holes 406 in the sliding groove 405 leak out, at the moment, cool air in the central tube 403 can be in contact with the inner wall of the extruded corrugated tube through the air holes 406 to perform air cooling on the inner wall of the corrugated tube, and meanwhile, the inner wall of the corrugated tube can be better separated from the outer wall of the central tube 403 by blowing the inner wall of the corrugated tube, so that the backward sliding effect of the corrugated tube is ensured;
moreover, the number of the leaked air holes 406 can be adjusted by rotating the adjusting screw 702 so as to adapt to cooling of corrugated pipes with different discharging speeds.
The corrugated pipe is manufactured by the manufacturing process of the corrugated pipe, and the outer end of the corrugated pipe is provided with spiral lines.
Claims (10)
1. A manufacturing process of a corrugated pipe, which is characterized in that: the method comprises the following steps:
s1, fully mixing raw material particles;
s2, heating the raw material particles to obtain a raw material in a molten state;
s3, adding the raw materials in a molten state into a forming device, extruding the raw materials in the molten state through the forming device, and rapidly cooling and forming to obtain the corrugated pipe;
s4, introducing the corrugated pipe continuously molded at the rear end of the molding device into a cutting machine, and cutting the corrugated pipe into the required length according to the requirement.
2. A bellows manufacturing process according to claim 1, wherein: the raw material is high-density polyethylene.
3. A bellows manufacturing process according to claim 1, wherein: the heating is carried out to 230 ℃ in the step S2.
4. A bellows manufacturing process according to claim 1, wherein: the forming device comprises a pressing part positioned at the front end and a forming part connected to the rear end of the pressing part.
5. A bellows manufacturing process according to claim 4, wherein: the extrusion part is provided with a heating ring for ensuring that the raw materials are in a molten state.
6. A bellows manufacturing process according to claim 4, wherein: the molding part comprises a central tube (403) positioned inside and a shell tube (302) coaxially arranged outside the central tube (403), and the extrusion part extrudes raw materials in a molten state between the central tube (403) and the shell tube (302).
7. A bellows manufacturing process according to claim 6, wherein: the inner wall of the shell tube (302) is provided with a thread groove (303), and the front end of the shell tube (302) is rotationally connected with the forming part.
8. A bellows manufacturing process according to claim 7, wherein: the outer part of the shell pipe (302) is rotated to form a cooling pipe (501), and two connecting pipes (504) are arranged on the cooling pipe (501).
9. A bellows manufacturing process according to claim 8, wherein: two connecting pipes (504) are respectively positioned at two ends of the cooling pipe (501) and are oppositely arranged.
10. The bellows produced by the bellows manufacturing process according to claim 7, wherein: the outer end of the corrugated pipe is provided with spiral lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311405775.2A CN117416082A (en) | 2023-10-27 | 2023-10-27 | Corrugated pipe and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311405775.2A CN117416082A (en) | 2023-10-27 | 2023-10-27 | Corrugated pipe and manufacturing process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117416082A true CN117416082A (en) | 2024-01-19 |
Family
ID=89527977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311405775.2A Pending CN117416082A (en) | 2023-10-27 | 2023-10-27 | Corrugated pipe and manufacturing process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117416082A (en) |
-
2023
- 2023-10-27 CN CN202311405775.2A patent/CN117416082A/en active Pending
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