CN111231284A - Method for manufacturing flaring of double-flat-wall winding pipe by winding molten plastic belt - Google Patents
Method for manufacturing flaring of double-flat-wall winding pipe by winding molten plastic belt Download PDFInfo
- Publication number
- CN111231284A CN111231284A CN201811469441.0A CN201811469441A CN111231284A CN 111231284 A CN111231284 A CN 111231284A CN 201811469441 A CN201811469441 A CN 201811469441A CN 111231284 A CN111231284 A CN 111231284A
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- China
- Prior art keywords
- molten plastic
- flaring
- die
- winding
- flat
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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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/566—Winding and joining, e.g. winding spirally for making tubular articles followed by compression
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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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
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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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/84—Heating or cooling
- B29C53/845—Heating or cooling especially adapted for winding and joining
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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
Abstract
The invention relates to a method for manufacturing flaring of a double-flat-wall winding pipe by winding a molten plastic belt extruded by an extruder, wherein the molten plastic belt is wound on a hot die, the molten plastic belt is bonded with the hot die to form constraint on the inner surface of the molten plastic belt, the outer surface of the molten plastic belt is bound by a pressing wheel, so that the molten plastic is formed on the die, the winding is finished, and the wound flaring is separated from the die by cooling by utilizing the difference of the cooling shrinkage rates of the molten plastic belt and the die, so that the flaring of the double-flat-wall winding pipe is formed. Compared with the prior art, the invention has simple equipment requirement and convenient operation; because the plastic tape is melted, the change of the flaring appearance can be realized more flexibly by changing the combination of the flaring die and the pressing wheel; the manufacture of the flaring and the connection with the double-flat-wall winding pipe can be completed simultaneously.
Description
Technical Field
The invention relates to a flaring manufacturing method, in particular to a method for manufacturing a flaring of a double-flat-wall winding pipe by winding a molten plastic strip.
Background
The traditional manufacturing method of the flaring of the double-flat-wall winding pipe comprises the following steps: and (5) injection molding and die pressing. The equipment used in both methods is complex and expensive, especially for large bore flares. Therefore, a more concise and effective flaring manufacturing method is actively sought in the industry.
Chinese invention patent CN104626526A reports a method for manufacturing flaring of polyethylene winding structure wall drain pipe. The flaring manufacturing method mentioned in the patent comprises the following steps:
1. manufacturing a flaring die corresponding to the polyethylene winding structure wall pipe according to the requirement;
2. manufacturing a plastic section for winding;
3. winding the pre-produced plastic section on a flaring die, and welding and molding by using a plastic welding rod while winding.
According to the manufacturing method, the section of the prefabricated plastic profile is determined, so that the profile is difficult to completely fit with the surface of a mold when the conical section of the flaring mold is spirally wound. In view of the sealing requirements of the flaring, the flaring manufactured by the method is difficult to ensure the continuity and smoothness of the inner surface of the flaring.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned deficiencies of the prior art and providing a method for manufacturing a double flat-walled convoluted pipe flare by wrapping a molten plastic strip.
The purpose of the invention can be realized by the following technical scheme:
a method for making flaring of dual-flat-wall wound pipe by winding molten plastic band extruded from extruder includes winding the molten plastic band on hot mould, adhering the molten plastic band to the hot mould to form a bound internal surface of the molten plastic band, forming a bound external surface of the molten plastic band by pressing wheel to form the molten plastic band on the mould according to required shape, and cooling to separate the wound flaring from the mould.
The mould can rotate around the axis under the driving of the driving device; the mould itself is designed to be inwardly collapsible.
The temperature of the mould is 50-260 ℃.
The mold is made of a material which can be bonded with the molten plastic strip in a hot state and can be separated after cooling, and the mold material comprises but is not limited to cast iron, steel, aluminum, copper, wood or stone.
The material of the melting plastic belt comprises plastic, rubber or other soft materials,
including but not limited to PP, PE, PVC, PA, ABS, PC, etc.
The shape of the molten plastic strip includes but is not limited to a flat plate shape, a rectangular shape, a circular shape, a triangular shape or a Z-shape.
The double-flat-wall winding pipe comprises but is not limited to Polyethylene (PE), polypropylene (PP), steel-plastic composite and other double-flat-wall winding pipes of various materials and types.
The method for manufacturing the flaring of the double-flat-wall winding pipe by winding the molten plastic strip comprises the following three implementation modes:
(1) winding one or more layers of molten plastic belts with the same width as the manufactured flaring on the circumference of the mould to form the flaring;
(2) spirally arranging or laminating narrow molten plastic strips on a die side by side, and winding one or more layers to form a flaring;
(3) and (3) winding one or more layers of molten plastic strips with the same width or the same width as the manufactured flaring on the die and the finished double-flat-wall winding pipe in a circumferential and spiral side-by-side and spiral laminating manner to form the flaring and be connected with the finished double-flat-wall winding pipe.
The narrow molten plastic strip means that the width of the molten plastic strip is smaller than the width of the flaring, and the specific width is determined according to actual conditions.
The inventive flares may also be used with solid wall or profiled wall pipes.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the equipment requirement is simple, and the operation is convenient and fast;
2. because the plastic tape is melted, the change of the flaring appearance can be realized more flexibly by changing the combination of the flaring die and the pressing wheel;
3. the method is easier to realize: and simultaneously finishing the manufacture of the flaring and the connection with the double-flat-wall winding pipe.
Drawings
FIG. 1: the molten plastic strip is wound and flared.
In the figure: 1-a mould; 2-a pinch roller; 3-extruder gun head; 4-melting the plastic tape; 5-heating device.
Detailed Description
A method for manufacturing flaring of a double-flat-wall winding pipe by winding a molten plastic strip comprises the steps of winding the molten plastic strip 4 extruded by a gun head 3 of an extruder on a hot die 1, heating the die 1 through a heating device 5, bonding the molten plastic strip 4 with the hot die 1 to enable the inner surface of the molten plastic strip 4 to be bound, forming the outer surface of the molten plastic strip 4 to be bound through a pressing wheel 2, enabling the molten plastic strip 4 to be formed on the die 1 according to a required shape, finishing winding, and enabling the wound flaring to be separated from the die through cooling by utilizing the difference of cooling shrinkage rates of the molten plastic strip 4 and the die 1, so that the flaring of the double-flat-wall winding pipe is formed.
The mould can rotate around the axis under the driving of the driving device; the mould itself is designed to be inwardly collapsible.
The temperature of the mould is 50-260 ℃.
The mold is made of a material which can be bonded with the molten plastic strip in a hot state and can be separated after cooling, and the mold material comprises but is not limited to cast iron, steel, aluminum, copper, wood or stone.
The material of the melting plastic belt comprises plastic, rubber or other soft materials,
including but not limited to PP, PE, PVC, PA, ABS, PC, etc.
The shape of the molten plastic strip includes but is not limited to a flat plate shape, a rectangular shape, a circular shape, a triangular shape or a Z-shape.
The double-flat-wall winding pipe comprises but is not limited to Polyethylene (PE), polypropylene (PP), steel-plastic composite and other double-flat-wall winding pipes of various materials and types.
The method for manufacturing the flaring of the double-flat-wall winding pipe by winding the molten plastic strip comprises the following three implementation modes:
(1) winding one or more layers of molten plastic belts with the same width as the manufactured flaring on the circumference of the mould to form the flaring;
(2) spirally arranging or laminating narrow molten plastic strips on a die side by side, and winding one or more layers to form a flaring;
(3) and (3) winding one or more layers of molten plastic strips with the same width or the same width as the manufactured flaring on the die and the finished double-flat-wall winding pipe in a circumferential and spiral side-by-side and spiral laminating manner to form the flaring and be connected with the finished double-flat-wall winding pipe.
The narrow molten plastic strip means that the width of the molten plastic strip is smaller than the width of the flaring, and the specific width is determined according to actual conditions.
The present invention will be described in detail with reference to specific examples.
Example 1
A method for manufacturing a flaring of a double-flat-wall winding pipe by winding a molten plastic strip comprises the following steps:
1. manufacturing and installing a flaring die according to the requirement; the mould can rotate around the axis under the driving of the driving device; the mould itself is designed to be inwardly collapsible.
2. Manufacturing and installing a pressing wheel according to the shape of the die; the puck can be divided into multiple segments.
3. An extruder with a proper extrusion amount is selected and provided with a die head with the width consistent with the total width of the flaring die.
4. Appropriate heating is provided.
5. And opening the mold rotating device to rotate the mold.
6. The heating is turned on and the mold is heated to 50-260 c (depending on the material).
7. The extruder was turned on and a strip of molten plastic from the extruder, consistent with the width of the die, was introduced to the pressure wheel.
8. The molten plastic strip is coated onto the mold surface by the pinch rollers.
9. And (4) stopping the material supply of the extruder after winding for one or more circles according to the actual thickness requirement of the flaring, and finishing the winding.
10. And cooling, and then shrinking the die and demoulding to finish the manufacture of the flaring.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (9)
1. A method for manufacturing a flaring of a double-flat-wall winding pipe by winding a molten plastic strip is characterized in that,
winding the molten plastic belt extruded by the extruder on a hot die, bonding the molten plastic belt with the hot die to form constraint on the inner surface of the molten plastic belt, forming constraint on the outer surface of the molten plastic belt by a pressing wheel so as to form molten plastic on the die, finishing winding, and separating the wound flaring from the die by cooling by utilizing the difference of cooling shrinkage rates of the molten plastic belt and the die so as to form the flaring of the double-flat-wall wound pipe.
2. The method for manufacturing the flaring of the double-flat-wall winding pipe by winding the molten plastic strip according to claim 1, wherein the die is driven by a driving device to rotate around the axis; the mould itself is designed to be inwardly collapsible.
3. The method of claim 1 wherein the die is at a temperature of 50-260 ℃.
4. The method of claim 1 wherein the die is made of a material that is capable of bonding to the molten plastic strip in a hot state and being separable after cooling, and the die material includes but is not limited to cast iron, steel, aluminum, copper, wood or stone.
5. The method of claim 1 wherein the molten plastic strip is wrapped around the flared end of the double flat-walled wrapped tube, wherein the molten plastic strip comprises plastic, rubber or other soft material,
including but not limited to PP, PE, PVC, PA, ABS, PC.
6. The method of claim 1 wherein the molten plastic strip is in a shape including but not limited to a flat, rectangular, circular, triangular or Z-shaped strip.
7. The method of claim 1 wherein the double flat wall wrapped tube includes but is not limited to polyethylene, polypropylene or steel-plastic composite double flat wall wrapped tube.
8. The method of claim 1, including but not limited to the following three implementations:
(1) winding one or more layers of molten plastic belts with the same width as the manufactured flaring on the circumference of the mould to form the flaring;
(2) spirally arranging or laminating narrow molten plastic strips on a die side by side, and winding one or more layers to form a flaring;
(3) and (3) winding one or more layers of molten plastic strips with the same width or the same width as the manufactured flaring on the die and the finished double-flat-wall winding pipe in a circumferential and spiral side-by-side and spiral laminating manner to form the flaring and be connected with the finished double-flat-wall winding pipe.
9. The method of claim 1 wherein the narrow strip of molten plastic is less than the width of the flare.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811469441.0A CN111231284A (en) | 2018-11-28 | 2018-11-28 | Method for manufacturing flaring of double-flat-wall winding pipe by winding molten plastic belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811469441.0A CN111231284A (en) | 2018-11-28 | 2018-11-28 | Method for manufacturing flaring of double-flat-wall winding pipe by winding molten plastic belt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111231284A true CN111231284A (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811469441.0A Pending CN111231284A (en) | 2018-11-28 | 2018-11-28 | Method for manufacturing flaring of double-flat-wall winding pipe by winding molten plastic belt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111231284A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451633A (en) * | 2008-12-26 | 2009-06-10 | 上海清远管业科技有限公司 | Large diameter plastic winding tube with socket mouth and production method |
| KR20100066980A (en) * | 2008-12-10 | 2010-06-18 | 화이버텍(주) | Device for manufacturing a pipe continuously |
| CN103317729A (en) * | 2012-03-23 | 2013-09-25 | 青岛福润德塑料挤出技术有限公司 | Manufacturing method for online flaring continuously winding thermoforming spiral corrugated pipes |
| CN104626526A (en) * | 2015-01-21 | 2015-05-20 | 倪士民 | Manufacturing method of socket flaring pipe fitting formed by winding polyethylene winding structure wall drainage pipe material |
| US20190375185A1 (en) * | 2018-06-07 | 2019-12-12 | Honeywell International Inc. | Hybrid fiber multi-axial prepreg |
-
2018
- 2018-11-28 CN CN201811469441.0A patent/CN111231284A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100066980A (en) * | 2008-12-10 | 2010-06-18 | 화이버텍(주) | Device for manufacturing a pipe continuously |
| CN101451633A (en) * | 2008-12-26 | 2009-06-10 | 上海清远管业科技有限公司 | Large diameter plastic winding tube with socket mouth and production method |
| CN103317729A (en) * | 2012-03-23 | 2013-09-25 | 青岛福润德塑料挤出技术有限公司 | Manufacturing method for online flaring continuously winding thermoforming spiral corrugated pipes |
| CN104626526A (en) * | 2015-01-21 | 2015-05-20 | 倪士民 | Manufacturing method of socket flaring pipe fitting formed by winding polyethylene winding structure wall drainage pipe material |
| US20190375185A1 (en) * | 2018-06-07 | 2019-12-12 | Honeywell International Inc. | Hybrid fiber multi-axial prepreg |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20200605 |