CN106903858B - Dynamic sealing device of plastic pipe extrusion equipment - Google Patents
Dynamic sealing device of plastic pipe extrusion equipment Download PDFInfo
- Publication number
- CN106903858B CN106903858B CN201710235289.9A CN201710235289A CN106903858B CN 106903858 B CN106903858 B CN 106903858B CN 201710235289 A CN201710235289 A CN 201710235289A CN 106903858 B CN106903858 B CN 106903858B
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- Prior art keywords
- membrane
- sealing
- hole
- sealed
- plastic
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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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
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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
- B29C48/254—Sealing means
Abstract
The invention discloses a dynamic sealing device of plastic pipe extruding equipment, which comprises a plastic pipe extruder; plastic tubing forming machine, its input and plastic tubing extruder hookup, its output plastic tubing, the exit of plastic tubing forming machine is provided with the seal membrane, and the outer lane and the export of seal membrane are fixed, and the center of seal membrane is provided with the through-hole, and the plastic tubing is exported cooling cutting equipment from the through-hole department, the seal membrane includes: the outer ring of the sealing inner membrane is sealed with the outlet, and the center of the sealing inner membrane is provided with a sealing inner membrane hole; the outer ring of the outer sealing film is sealed with the outer ring of the inner sealing film, and the center of the outer sealing film is provided with an outer sealing film hole; the movable membrane, it sets up between sealed inner membrance and sealed adventitia, and the movable membrane center is provided with movable membrane hole, movable membrane hole with plastic tubing external diameter adaptation, during the plastic tubing swing, movable membrane can follow the swing and can seal sealed inner membrance hole and sealed adventitia hole all the time. The invention has the advantages of dynamic sealing, air leakage prevention and electric energy saving.
Description
Technical Field
The invention relates to a sealing structure of plastic pipe extrusion equipment.
Background
When large-size plastic pipes are processed, the plastic pipes are extruded by a plastic pipe extruder and sent to a plastic pipe forming machine for vacuum negative pressure cooling and forming, the aim of the vacuum negative pressure is to utilize the negative pressure to adsorb the wall of the plastic pipe on the inner wall of a round pipe, so that the plastic pipes can keep round, a sealing film is arranged at the outlet of the plastic pipe forming machine, the outer ring of the sealing film is fixed with the outlet of the plastic pipe forming machine, a through hole is arranged at the center of the sealing film, the plastic pipes are output to a cooling and cutting device from the through hole, in the prior art, the mounting position of the sealing film is fixed, in the process of outputting the plastic pipe, the plastic pipe has the tendency of position deviation such as vibration, natural gravity sag and the like, the resistance can be very big when the center contact of plastic tubing and seal membrane, when the central clearance of plastic tubing and seal membrane is great gas leakage, can reduce the vacuum, influences product quality, perhaps needs increase the power consumptive of vacuum pump.
Disclosure of Invention
The invention provides a dynamic sealing device of plastic pipe extrusion equipment according to the defects.
The technical scheme of the invention is as follows:
a dynamic sealing device for a plastic pipe extrusion apparatus, comprising:
a plastic tube extruder;
plastic tubing forming machine, its input and plastic tubing extruder hookup, its output plastic tubing, the exit of plastic tubing forming machine is provided with the seal membrane, and the outer lane and the export of seal membrane are fixed, and the center of seal membrane is provided with the through-hole, and the plastic tubing is exported cooling cutting equipment from the through-hole department, the seal membrane includes:
the outer ring of the sealing inner membrane is sealed with the outlet, and the center of the sealing inner membrane is provided with a sealing inner membrane hole;
the outer ring of the outer sealing film is sealed with the outer ring of the inner sealing film, and the center of the outer sealing film is provided with an outer sealing film hole;
the movable membrane, it sets up between sealed inner membrance and sealed adventitia, and the movable membrane center is provided with movable membrane hole, movable membrane hole with plastic tubing external diameter adaptation, both controls in less clearance, during the plastic tubing swing, movable membrane can follow the swing and can seal sealed interior membrane hole and sealed outer membrane hole all the time.
It should be noted that the sealing membrane enables dynamic sealing of the plastic tube.
The sealing ring is arranged between the sealing inner membrane and the sealing outer membrane and positioned on the outer rings of the sealing inner membrane and the sealing outer membrane, and the thickness of the sealing ring is close to that of the movable membrane.
The sealing inner membrane is made of an elastic material.
The invention has the advantages of simple structure, low cost, dynamic sealing, air leakage prevention and electric energy saving.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic view showing the structure of the sealing film of the present invention.
Detailed Description
The invention will now be further described with reference to the accompanying drawings in which:
as shown, a dynamic sealing device of a plastic pipe extrusion apparatus includes:
a plastic tube extruder;
the plastic pipe forming machine 1 is characterized in that the input end of the plastic pipe forming machine 1 is connected with a plastic pipe extruder, the output end of the plastic pipe forming machine outputs a plastic pipe 7, a sealing film 2 is arranged at the outlet 26 of the plastic pipe forming machine 1, the outer ring of the sealing film 2 is fixed with the outlet 26, a through hole is formed in the center of the sealing film 2, and the plastic pipe 7 is output to cooling cutting equipment from the through hole;
the sealing film 2 includes:
the outer ring of the sealing inner membrane 21 is sealed with the outlet 26, and the center of the sealing inner membrane 21 is provided with a sealing inner membrane hole 20;
a sealing outer membrane 23, the outer ring of which is sealed with the outer ring of the sealing inner membrane 21, and the center of which is provided with a sealing outer membrane hole 24;
the movable membrane 22 is arranged between the sealing inner membrane 21 and the sealing outer membrane 23, a movable membrane hole 27 is formed in the center of the movable membrane 22, the movable membrane hole 27 is matched with the outer diameter of the plastic pipe 7, and when the plastic pipe 7 swings, the movable membrane 22 can swing along with the swinging and can always seal the sealing inner membrane hole 20 and the sealing outer membrane hole 24.
And a sealing ring 25 which is arranged between the inner sealing film 21 and the outer sealing film 23 and is positioned at the outer ring of the inner sealing film 21 and the outer sealing film 23, wherein the thickness of the sealing ring 25 is close to that of the movable film 22.
The sealing inner membrane 21 is made of an elastic material.
Claims (3)
1. A dynamic sealing device for a plastic pipe extrusion apparatus, comprising:
a plastic tube extruder;
plastic tubing forming machine (1), its input and plastic tubing extruder hookup, its output plastic tubing (7), export (26) department of plastic tubing forming machine (1) is provided with seal membrane (2), and the outer lane of seal membrane (2) is fixed with export (26), and the center of seal membrane (2) is provided with the through-hole, and cooling cutting equipment, characterized by are exported from through-hole department in plastic tubing (7), seal membrane (2) include:
the outer ring of the sealing inner membrane (21) is sealed with the outlet (26), and the center of the sealing inner membrane is provided with a sealing inner membrane hole (20);
the outer ring of the outer sealing film (23) is sealed with the outer ring of the inner sealing film (21), and the center of the outer sealing film is provided with an outer sealing film hole (24);
the movable membrane (22) is arranged between the sealed inner membrane (21) and the sealed outer membrane (23), a movable membrane hole (27) is formed in the center of the movable membrane (22), the movable membrane hole (27) is matched with the outer diameter of the plastic pipe (7), and when the plastic pipe (7) swings, the movable membrane (22) can swing along with and can always seal the sealed inner membrane hole (20) and the sealed outer membrane hole (24).
2. A dynamic sealing device of a plastic pipe extrusion apparatus as claimed in claim 1, further comprising a sealing ring (25) installed between the inner sealing film (21) and the outer sealing film (23) at an outer circumference of the inner sealing film (21) and the outer sealing film (23), the thickness of the sealing ring (25) being close to the thickness of the movable film (22).
3. A dynamic sealing device for plastic tube extrusion apparatus as claimed in claim 1 or 2, characterized in that the sealing inner membrane (21) is made of an elastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710235289.9A CN106903858B (en) | 2017-04-12 | 2017-04-12 | Dynamic sealing device of plastic pipe extrusion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710235289.9A CN106903858B (en) | 2017-04-12 | 2017-04-12 | Dynamic sealing device of plastic pipe extrusion equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106903858A CN106903858A (en) | 2017-06-30 |
| CN106903858B true CN106903858B (en) | 2022-09-20 |
Family
ID=59194419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710235289.9A Active CN106903858B (en) | 2017-04-12 | 2017-04-12 | Dynamic sealing device of plastic pipe extrusion equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106903858B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0425942A2 (en) * | 1989-10-31 | 1991-05-08 | INOEX GmbH | Calibration and cooling apparatus for extruded plastic tubes |
| DE69131720D1 (en) * | 1990-07-12 | 1999-11-18 | Bando Chemical Ind | Process for the production of a fiber-reinforced elastic film, device for its production and tool to be used in the process |
| EP1500853A1 (en) * | 2003-07-23 | 2005-01-26 | INOEX GmbH | Sealing with a variable internal diameter |
| CN202174733U (en) * | 2011-07-27 | 2012-03-28 | 赤峰天源生态建设有限公司 | Negative-pressure cooling and shaping device for extrusion plastic tubes |
| CN105856532A (en) * | 2009-11-06 | 2016-08-17 | 巴顿菲尔-辛辛那提德国有限公司 | Device for sealing cooling tank for extruded plastic profile |
| CN106313472A (en) * | 2016-10-09 | 2017-01-11 | 天津盛欣佳业科技有限公司 | Plastic extrusion die with cooling structure |
| CN206633372U (en) * | 2017-04-12 | 2017-11-14 | 浙江派尔电气有限公司 | The dynamic sealing means of plastics pipe extrusion plant |
-
2017
- 2017-04-12 CN CN201710235289.9A patent/CN106903858B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0425942A2 (en) * | 1989-10-31 | 1991-05-08 | INOEX GmbH | Calibration and cooling apparatus for extruded plastic tubes |
| DE69131720D1 (en) * | 1990-07-12 | 1999-11-18 | Bando Chemical Ind | Process for the production of a fiber-reinforced elastic film, device for its production and tool to be used in the process |
| EP1500853A1 (en) * | 2003-07-23 | 2005-01-26 | INOEX GmbH | Sealing with a variable internal diameter |
| CN105856532A (en) * | 2009-11-06 | 2016-08-17 | 巴顿菲尔-辛辛那提德国有限公司 | Device for sealing cooling tank for extruded plastic profile |
| CN202174733U (en) * | 2011-07-27 | 2012-03-28 | 赤峰天源生态建设有限公司 | Negative-pressure cooling and shaping device for extrusion plastic tubes |
| CN106313472A (en) * | 2016-10-09 | 2017-01-11 | 天津盛欣佳业科技有限公司 | Plastic extrusion die with cooling structure |
| CN206633372U (en) * | 2017-04-12 | 2017-11-14 | 浙江派尔电气有限公司 | The dynamic sealing means of plastics pipe extrusion plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106903858A (en) | 2017-06-30 |
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