CN101200114B - Plastics extrusion melt roughcast transfer molding process - Google Patents
Plastics extrusion melt roughcast transfer molding process Download PDFInfo
- Publication number
- CN101200114B CN101200114B CN2006100707569A CN200610070756A CN101200114B CN 101200114 B CN101200114 B CN 101200114B CN 2006100707569 A CN2006100707569 A CN 2006100707569A CN 200610070756 A CN200610070756 A CN 200610070756A CN 101200114 B CN101200114 B CN 101200114B
- Authority
- CN
- China
- Prior art keywords
- plastic
- melt
- blank
- melt blank
- die
- 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.)
- Expired - Fee Related
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Classifications
-
- 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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; Nozzle zone
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to the plastic molding processing technology, which in particular relates to a plastic extrusion melt blank transfer compression molding process. The invention has the process that with the adoption of a plastic extruder, the plastic melt is first squeezed quantitatively into a high temperature melt blank die with temperature control, forming a dense nonporous melt blank. Afterwards, the melt blank die is open and the melt blank is taken out. Through the mechanical hand, transmission equipments, manual work and other moving tools or equipments, the plastic melt blank is sent into a low temperature fine plastic die with temperature control. A pressure equipment locking mechanism starts up for the precise compression molding. After the cooling forming, the mould unloading mechanism of the fine plastic die is open and the finished plastic parts are removed from the dies. Thus the nonporous finished plastic parts with high density, which meet the requirements, are produced. With the invention, the working pressure can be adjusted through the pressure equipment, and the nonporous products with high density can be produced. Therefore, the invention is particularly suitable for the forming processing of large-scale plastic products. The process is simple with low energy consumption and low processing costs, in which the efficiency is high with excellent quality.
Description
One, affiliated field
The invention belongs to the plastic shaping processing technology, particularly relate to a kind of plastics extrusion melt roughcast transfer molding process.
Two, background technology
Extruding, injection moulding, hot extruding and cold press technology are adopted in traditional short and thick entity or the moulding of cavity geometry plastic product more, especially based on injection molding technique.Injection moulding method is by injection machine the high-pressure plastic melt to be injected the mould aftershaping of locking, and product size is big more, and the plastic melt injection pressure is high more, and required injection machine specification is big more, also consumption increase thereupon that equipment investment is also big more, the energy disappears; Simultaneously, along with the increasing of product size, the density of product will be difficult to guarantee.
Three, summary of the invention
The objective of the invention is to overcome the deficiency of existing plastics molding process, providing a kind of does not have specific (special) requirements to former, and process is simple, the plastics extrusion melt roughcast transfer molding process of Forming Quality excellence.
Technical process of the present invention is that the employing plastic extruder is quantitatively clamp-oned plastic melt earlier in the high-temperature fusant blank mould of band temperature control, forms fine and close imperforate melt blank, opens melt blank mould then, takes out the melt blank; Carry frock with manipulator or connecting gear or artificial the grade; the plastic melt blank is sent in the smart mold tool of temperature control low temperature; starting pressure equipment clamping; carry out accurate compression moulding; behind the cooling and shaping; open smart mold tool knock-out gear,, produce pore-free, compactness height, satisfactory plastic product spare the depanning of finished product working of plastics.
Determining of plastic melt extrusion capacity is the design weight according to the plastic product spare that will process, or definite by calculating by drawing; The control of plastic melt extrusion capacity is by determining the running time of adjusting extruder.
The pre-heating mean of mould can adopt electrical heating, or feeds hot water or steam or deep fat heating, and heating source is carried out temperature control.Mold cools down adopts modes such as temperature control cooling water, refrigerated brine, cold wind, and temperature control is carried out in cooling.
Injection machine has been save in this invention, the substitute is the extruder of investment much smaller than injection machine, significantly reduced equipment investment, the preformed of melt blank and the essence of plastic product are moulded and are adopted two fully independently moulds, help the temperature control in the forming process, reduced energy resource consumption, the mould investment is much smaller than injection mold, reduced the mould investment, the operating pressure of compression molding can be by the press device adjustment, control the briquetting pressure in the formed product mould flexibly, produce the product of pore-free high compactness, be particularly suitable for the processing and forming of large-scale plastic product.This technology is simple, and energy resource consumption is few, processing cost is low, and production efficiency height, quality are good.
Four, the specific embodiment
With this explained hereafter coal washing sieve plate,, calculate the materials amount according to the design of coal washing with sieve plate.Adjusting extruder according to the materials amount finds time, extruder is warming up to design temperature (being generally 180 ℃～200 ℃), be incubated after 30～50 minutes, the quantitative extrusion plastic melt of high temperature stock of square mould to preheating, mold temperature is controlled at 150 ℃～170 ℃, after melt weight reaches requirement, melt preformed, the blank mould is opened, and takes out the melt blank, and the carrying frock is transferred to the smart mold tool of temperature control low temperature with the melt blank, mold temperature is controlled at 60 ℃～80 ℃, press device moves downward, and formpiston enters in the former, and melt is exerted pressure, melt is in mould behind the cooling and shaping, press device drives formpiston and moves upward, and opens mould, with the former liftout attachment goods is ejected.Produce the coal washing sieve plate of pore-free high compactness.
Claims (1)
1. plastics extrusion melt roughcast transfer molding process, it is characterized by, this technical process is to adopt plastic extruder that plastic melt is quantitatively clamp-oned earlier in the high-temperature fusant blank mould of band temperature control, forms fine and close imperforate melt blank, open melt blank mould then, take out the melt blank; Carry frock with connecting gear or artificial etc., the plastic melt blank is sent in the smart mold tool of temperature control low temperature, starting pressure equipment clamping carries out accurate compression moulding, behind the cooling and shaping, opens smart mold tool knock-out gear, with the depanning of finished product working of plastics; Determining of plastic melt extrusion capacity is the design weight according to the plastic product spare that will process, or definite by calculating by drawing; The control of plastic melt extrusion capacity is by determining the running time of adjusting extruder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100707569A CN101200114B (en) | 2006-12-14 | 2006-12-14 | Plastics extrusion melt roughcast transfer molding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100707569A CN101200114B (en) | 2006-12-14 | 2006-12-14 | Plastics extrusion melt roughcast transfer molding process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101200114A CN101200114A (en) | 2008-06-18 |
| CN101200114B true CN101200114B (en) | 2011-02-16 |
Family
ID=39515557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100707569A Expired - Fee Related CN101200114B (en) | 2006-12-14 | 2006-12-14 | Plastics extrusion melt roughcast transfer molding process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101200114B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008029303A1 (en) * | 2008-06-20 | 2009-12-24 | Bayer Technology Services Gmbh | Screw elements with improved dispersing effect and low energy input |
| CN104760269A (en) * | 2015-03-28 | 2015-07-08 | 合肥汇通控股股份有限公司 | Heat bend molding technology of plastic nameplate |
| CN105216255A (en) * | 2015-10-16 | 2016-01-06 | 陈元文 | A kind of thermoplastic thin-walled melt direct compression-moulding methods continuously |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1606490A (en) * | 2001-12-21 | 2005-04-13 | 西奎斯特封闭件外国公司 | Compression molding process and article made by the process |
-
2006
- 2006-12-14 CN CN2006100707569A patent/CN101200114B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1606490A (en) * | 2001-12-21 | 2005-04-13 | 西奎斯特封闭件外国公司 | Compression molding process and article made by the process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101200114A (en) | 2008-06-18 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110216 Termination date: 20151214 |
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| EXPY | Termination of patent right or utility model |