CN114919153A - PE pipe extruder head capable of preventing material from flowing transversely - Google Patents
PE pipe extruder head capable of preventing material from flowing transversely Download PDFInfo
- Publication number
- CN114919153A CN114919153A CN202210579617.8A CN202210579617A CN114919153A CN 114919153 A CN114919153 A CN 114919153A CN 202210579617 A CN202210579617 A CN 202210579617A CN 114919153 A CN114919153 A CN 114919153A
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- Prior art keywords
- shell
- telescopic
- movable
- head
- extrusion
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/33—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles with parts rotatable relative to each other
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
- B29C48/87—Cooling
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a PE pipe extrusion machine head for preventing materials from flowing transversely, which comprises a telescopic shell, wherein the telescopic shell is sleeved on the outer surface of an extrusion head, and a closed cavity is defined by the telescopic shell and the extrusion head; the movable shell is positioned between two adjacent telescopic shells and fixedly connected with the two telescopic shells; the movable shell displacement drive assembly is installed on the movable shell, and the movable shell displacement drive assembly is used for driving the movable shell to axially move along the outer surface of the extrusion die section. The invention can realize the isothermal expansion of the cavity gas in the telescopic shell by matching the telescopic shell with the movable shell, has higher heat absorption efficiency by adopting the mode, can reduce the length of the extrusion head on the basis of keeping heat dissipation, can provide the most proper residence time of the material in the extrusion die, and can ensure that the material maintains lower material temperature in the machine head so as to prevent the material from generating transverse flow and premature oxidation effect when being extruded in the extrusion die.
Description
Technical Field
The invention relates to the technical field of pipe processing equipment, in particular to a PE pipe extruder head for preventing transverse flow of materials.
Background
The extrusion molding is a continuous molding method in which a powdery or granular raw material is heated and melted, then shaped by extrusion, and then cooled and solidified. Therefore, the extrusion molding apparatus must have three functions of melting, shaping and solidifying. High speed extrusion is a system engineering, and is different from the prior common extrusion in aspects of mould, formula, process and the like. In a tube extrusion molding system, the die is critical to affect product quality and production efficiency. The influence factors of the high-speed extrusion production of the pipe are mainly analyzed from the aspect of a die. Influence of the extrusion die. In the extrusion production of the pipe, the quality of the extrusion die plays a very important role in the quality of the product. For processing materials, in order to meet the requirement of high-speed production of an extrusion die, materials can be further and fully mixed in the die head and then are extruded through a uniform melt extrusion die orifice to ensure that a tube blank does not generate a flow orientation effect in the extrusion die and that the materials keep lower melt pressure and stable extrusion balance in the extrusion die, and then the extrusion die head needs to have better heat dissipation performance to avoid transverse flow in the extrusion die during extrusion.
Disclosure of Invention
The invention aims to solve the problems and provides a PE pipe extruder head for preventing transverse flow of materials.
In order to achieve the purpose, the invention adopts the following technical scheme:
a PE pipe extrusion head for preventing material from flowing transversely comprises a head consisting of an extrusion die section and a cooling shaping end, wherein the cooling shaping end comprises:
the extrusion head is fixedly connected and communicated with the extrusion die section;
the number N of the telescopic shells is two or more, the telescopic shells are sleeved on the outer surface of the extrusion head, and a closed cavity is defined by the telescopic shells and the extrusion head;
the number M of the movable shells is N-1, and the movable shells are positioned between two adjacent telescopic shells and fixedly connected with the two telescopic shells;
the movable shell displacement drive assembly is installed on the movable shell, and the movable shell displacement drive assembly is used for driving the movable shell to axially move along the outer surface of the extrusion die section.
Optionally, the telescopic shell is of an inner-outer double-layer structure, a cavity is formed between the inner layer and the outer layer of the telescopic shell, a heat absorbing medium is filled in the cavity, and a pipeline joint for entering and exiting the heat absorbing medium is arranged on the telescopic shell;
the initial point and the end point of the telescopic shell are respectively defined as a and b, then:
the circulation efficiency is
Wherein, the work W is done externally and the heat Q is absorbed ab A pre-heat source temperature T and a post-heat source temperature T.
Optionally, the inner and outer layers of the telescopic shell are both in a corrugated structure.
Optionally, the movable housing displacement drive assembly comprises an externally threaded sleeve, an internally threaded sleeve and a piston plate;
wherein, the external screw thread cover is with the surface seamless welding of extruding the head, internal thread cover threaded connection is at the surface of external screw thread cover, the outer skin weld of external screw thread cover has the piston board, the piston board leans on outer one end to rotate with the movable shell and is connected.
Optionally, the movable shell displacement driving assembly further comprises a motor, a driving gear and a driven gear;
the motor is installed on the movable shell, the driving gear is in key connection with an output shaft of the motor, the driven gear is meshed with the driving gear, the driven gear is welded on the outer surface of the piston plate in a seamless mode, and the driven gear drives the piston plate to rotate and drive the internal thread sleeve to be in threaded connection with the external thread sleeve.
Compared with the prior art, the invention has the following advantages:
the invention can realize the isothermal expansion of the cavity gas in the telescopic shell by matching the telescopic shell with the movable shell, so that the heat can be absorbed from the outside in the process until the piston plate stops moving, and then the heat absorption medium in the telescopic shell starts to absorb the heat from the gas in the cavity.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the extrusion die section of the present invention;
FIG. 3 is a partial cross-sectional view of the movable housing of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3 in accordance with the present invention;
FIG. 5 is a radial cross-sectional view of the movable housing displacement drive assembly of the present invention;
FIG. 6 is a schematic view of the movement of the movable shell according to the present invention;
FIG. 7 is a telescoping shell cycle of the present invention;
in the figure: 1 aircraft nose, 1a extrusion die section, 1b cooling design end, 2 extrusion head, 3 flexible shell, 4 movable shells, 5 movable shell displacement drive assembly, 51 motor, 52 driving gear, 53 driven gear, 6 pipe joint, 7 external thread cover, 8 internal thread cover, 9 piston plate.
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.
Referring to fig. 1, a PE pipe extrusion head for preventing material from flowing transversely includes a head 1 composed of an extrusion die section 1a and a cooling and shaping end 1b, which is prior art and will not be described herein again.
Referring to fig. 2, the cooling and shaping end 1b includes an extrusion head 2, a telescopic shell 3, a movable shell 4 and a movable shell displacement driving assembly 5, as follows:
extrude first 2 and extrude mould section fixed connection and intercommunication, extrude first 2 for prior art, be used for the ejection of compact of PE pipe.
Referring to fig. 2, 3 and 6, the number N of the telescopic shells 3 is two or more (two in this embodiment), and the telescopic shells 3 are sleeved on the outer surface of the extrusion head 2 and enclose a closed cavity therebetween.
In this embodiment, the telescopic shell 3 has an inner and outer double-layer structure, a cavity is provided between the inner and outer layers of the telescopic shell 3, and the cavity is filled with a heat-absorbing medium, which may be pure water with a boiling point of 100 ℃, or oil, or a low-boiling-point solvent such as dichloromethane.
In this embodiment, the inner and outer layers of the telescopic shell 3 are all of corrugated structures, and the corrugated structures can be used for matching with telescopic structures, but are made of metal materials, and the corrugated structures have good pressure resistance no matter in a V shape or a U shape, so that deformation can be avoided as much as possible in compression expansion of gas.
The telescopic shell 3 is provided with a pipeline joint 6 for passing in and out heat-absorbing media, and the pipeline joint 6 is used for passing in and out heat-conducting media and can be connected with a water pump to play a role in circulating heat conduction.
The number M of the movable shells 4 is N-1 (one in this embodiment), and the movable shells 4 are located between two adjacent telescopic shells 3 and fixedly connected with the two telescopic shells. So set up and to realize that a movable shell 4 can drive two telescoping shell 3 synchronous operation simultaneously and absorb heat in turn, ended and produced the problem in heat absorption vacuum period easily when a telescoping shell 3 motion.
The movable shell displacement drive assembly 5 is installed on the movable shell 4, and the movable shell displacement drive assembly 5 is used for driving the movable shell 4 to axially move towards along the outer surface of the extrusion die section 1 a.
Referring to fig. 2 to 5, the movable housing displacement drive assembly 5 comprises an externally threaded sleeve 7, an internally threaded sleeve 8 and a piston plate 9, as follows:
wherein, the outer surface seamless welding of external screw thread cover 7 and extrusion head 2, internal thread cover 8 threaded connection is at the surface of external screw thread cover 7, and the outer surface welding of external screw thread cover 7 has piston plate 9, and piston plate 9 leans on outer one end to rotate with movable shell 4 to be connected, and the casing adopts sealed bearing's mode to rotate to be connected. The axial displacement of the piston plate 9 can be achieved by a threaded connection of the internally threaded sleeve 8 and the externally threaded sleeve 7.
Referring to fig. 2 to 4, the movable shell displacement driving assembly 5 further includes a motor 51, a driving gear 52, and a driven gear 53, which are as follows:
wherein, motor 51 installs on activity shell 4, and driving gear 52 and motor 51's output shaft key-type connection, driven gear 53 and with driving gear 52 meshing, driven gear 53 seamless welding is in the surface of piston plate 9, and driven gear 53 drives piston plate 9 and rotates drive internal thread cover 8 and external thread cover 7 threaded connection.
The motor 51 can be a speed reducing motor or a servo motor, and is driven by a servo controller, the motor 51 drives a plurality of gears 52 to transmit, the driving gear 52 drives the driven gear 53 to drive, and finally the piston plate 9 and the internal thread sleeve 8 are driven to rotate, so that the displacement along the outer surface of the external thread sleeve 7 is realized.
It is worth mentioning that a cover shell (not shown in the figure) should be arranged on the outer surface of the movable shell displacement driving component 5, so that the movable shell displacement driving component 5 can be integrally sealed, and gas leakage caused by the position can be avoided, and the heat absorption and release of gas in the cavity can be influenced.
Referring to fig. 6 and 7, in the present embodiment, the initial point and the end point of expansion of the telescopic shell 3 are respectively defined as a and b, when the piston plate 9 starts to move, the gas in the cavity expands isothermally during the movement from a to b, so that heat is absorbed from the outside in the process until the piston plate 9 stops moving, and then the heat-absorbing medium in the telescopic shell 3 starts to absorb heat from the gas in the cavity: when the piston plate 9 moves backwards, the gas in the cavity is compressed isothermally, so that the temperature of the heat-conducting medium is higher than that of the gas in the cavity in the process, the heat is dissipated by matching the pipeline joint 6 and an external water pump with the flowing of the heat-conducting medium, and the gas in the cavity can only absorb heat from the heat-conducting medium and cannot absorb heat from the outside due to the obstruction of the heat-conducting medium.
In the above process, the absolute values of heat absorption and heat release in the reciprocating motion of a to b and b to a are equal, and the gas absorbs heat only in the process of a to b.
Therefore, after the telescopic pipe 3 and the heat-conducting medium are adopted for blocking, the heat circulation efficiency is as follows:
wherein, the work W is done externally and the heat Q is absorbed ab Temperature before heat source T 1 After heat source temperature T 2 。
If the telescopic pipe 3 and the heat-conducting medium are not adopted, the circulation efficiency is as follows:
in conclusion, the telescopic pipe 3, the heat conducting medium and the movable shell are matched to compress and expand gas, so that the high circulation efficiency is achieved.
The above description is only a preferred embodiment of the present invention, and not intended to be exhaustive or to limit the scope of the present invention, and any person skilled in the art should be able to make equivalents and modifications within the technical scope of the present invention.
Claims (5)
1. A PE pipe extrusion head for preventing material from flowing transversely, which comprises a head (1) consisting of an extrusion die section (1a) and a cooling shaping end (1b), and is characterized in that the cooling shaping end (1b) comprises:
the extrusion head (2) is fixedly connected and communicated with the extrusion die section;
the number N of the telescopic shells (3) is two or more, the telescopic shells (3) are sleeved on the outer surface of the extrusion head (2), and a closed cavity is defined by the telescopic shells (3) and the extrusion head;
the number M of the movable shells (4) is N-1, and the movable shells (4) are positioned between two adjacent telescopic shells (3) and fixedly connected with the two telescopic shells;
the movable shell displacement drive assembly (5), movable shell displacement drive assembly (5) are installed on movable shell (4), movable shell displacement drive assembly (5) are used for driving movable shell (4) to move along extruding die section (1a) surface axial toward resetting.
2. The PE pipe extruder head for preventing the transverse flow of materials according to claim 1, wherein the telescopic shell (3) is of an inner-outer double-layer structure, a cavity is formed between the inner layer and the outer layer of the telescopic shell (3), a heat absorbing medium is filled in the cavity, and a pipeline joint (6) for entering and exiting the heat absorbing medium is arranged on the telescopic shell (3);
the expansion initial point and the expansion end point of the expansion shell (3) are respectively defined as a and b, and then:
the circulation efficiency is
Wherein, the work W is done externally and the heat Q is absorbed ab Temperature before heat source T 1 After heat source temperature T 2 。
3. A PE pipe extruder head for preventing the cross flow of material according to claim 1, characterized in that the inner and outer layers of said telescopic shell (3) are corrugated.
4. A PE pipe extruder head for preventing lateral flow of material as claimed in claim 2, characterized in that said movable housing displacement drive assembly (5) comprises an externally threaded sleeve (7), an internally threaded sleeve (8) and a piston plate (9);
wherein, external screw thread cover (7) and the surface seamless welding of extruding head (2), internal thread cover (8) threaded connection is at the surface of external screw thread cover (7), the outer skin weld of external screw thread cover (7) has piston board (9), piston board (9) lean on outer one end and movable shell (4) to rotate and are connected.
5. The PE pipe extrusion head for preventing the material from flowing transversely as claimed in claim 4, wherein the movable casing displacement driving assembly (5) further comprises a motor (51), a driving gear (52) and a driven gear (53);
wherein, motor (51) are installed on activity shell (4), the output shaft key-type connection of driving gear (52) and motor (51), driven gear (53) and with driving gear (52) meshing, seamless welding in driven gear (53) is at the surface of piston board (9), driven gear (53) drive piston board (9) rotate drive internal thread bush (8) and thread connection with external thread bush (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210579617.8A CN114919153B (en) | 2022-05-25 | 2022-05-25 | PE pipe extruder head for preventing material from transversely flowing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210579617.8A CN114919153B (en) | 2022-05-25 | 2022-05-25 | PE pipe extruder head for preventing material from transversely flowing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114919153A true CN114919153A (en) | 2022-08-19 |
| CN114919153B CN114919153B (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210579617.8A Active CN114919153B (en) | 2022-05-25 | 2022-05-25 | PE pipe extruder head for preventing material from transversely flowing |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5077977A (en) * | 1989-08-11 | 1992-01-07 | Shirat Enterprises Ltd. | Method and apparatus for cooling and scanning infrared detector assemblies |
| CN1376573A (en) * | 2001-03-23 | 2002-10-30 | 中国石油化工股份有限公司 | Combined extruding-out and shape-fixating machine of plastic products and its application |
| US20060048521A1 (en) * | 2002-10-31 | 2006-03-09 | Hiroyuki Katayama | Regenerator method for manufacturing regenerator, system for manufacturing regenerator and stirling refrigerating machine |
| US20070186554A1 (en) * | 2004-03-19 | 2007-08-16 | Rak Miroslav | Thermal hydro-machine on hot gas with recirculation |
| CN216347148U (en) * | 2021-09-26 | 2022-04-19 | 青岛海尔生物医疗股份有限公司 | Stirling refrigerator |
-
2022
- 2022-05-25 CN CN202210579617.8A patent/CN114919153B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5077977A (en) * | 1989-08-11 | 1992-01-07 | Shirat Enterprises Ltd. | Method and apparatus for cooling and scanning infrared detector assemblies |
| CN1376573A (en) * | 2001-03-23 | 2002-10-30 | 中国石油化工股份有限公司 | Combined extruding-out and shape-fixating machine of plastic products and its application |
| US20060048521A1 (en) * | 2002-10-31 | 2006-03-09 | Hiroyuki Katayama | Regenerator method for manufacturing regenerator, system for manufacturing regenerator and stirling refrigerating machine |
| US20070186554A1 (en) * | 2004-03-19 | 2007-08-16 | Rak Miroslav | Thermal hydro-machine on hot gas with recirculation |
| CN216347148U (en) * | 2021-09-26 | 2022-04-19 | 青岛海尔生物医疗股份有限公司 | Stirling refrigerator |
Non-Patent Citations (1)
| Title |
|---|
| 辛光磊;迟国春;饶启超;卢旭辰;: "旋转式斯特林制冷机热仿真分析与优化", 低温与超导, no. 02, pages 12 - 16 * |
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|---|---|
| CN114919153B (en) | 2023-08-01 |
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