CN101480828A - Method for preparing ultra-large caliber PE blanking adapter and flange, and mold thereof - Google Patents
Method for preparing ultra-large caliber PE blanking adapter and flange, and mold thereof Download PDFInfo
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- CN101480828A CN101480828A CNA2008103067421A CN200810306742A CN101480828A CN 101480828 A CN101480828 A CN 101480828A CN A2008103067421 A CNA2008103067421 A CN A2008103067421A CN 200810306742 A CN200810306742 A CN 200810306742A CN 101480828 A CN101480828 A CN 101480828A
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Abstract
The invention relates to a method and a mould for manufacturing a flange and a PE plug with ultra-large diameter. The method comprises the following steps: a. PE material is dried by a drier; the dried PE material is put into an extruder and then is extruded into a PE plug with ultra-large diameter or flange mould with a cooling water channel through an extrusion mould at the outlet of the extruder, and the extruder and the PE plug with ultra-large diameter or flange mould are heated simultaneously by an electric heating ring; c. the PE plug with ultra-large diameter or flange mould is pressurized by a pressing machine; d. the PE plug with ultra-large diameter or flange mould is cooled by cooling water in the cooling water channel after the heating stops; e. the stripping is carried out after moulding; and f. the stripped PE plug or flange is naturally cooled and then processed to the sizes of required series. The invention adopts the new process of press moulding after extrusion to increate the new process for manufacturing a pipe fitting with large diameter and solves the problem that the injection moulding of PE plugs and flanges of DN800-DN1600 series can not be manufactured by an injection machine.
Description
Technical field
The present invention relates to a kind of preparation method of PE pipe fitting and a kind of PE pipe fitting mould, the particularly preparation method of PE plug, flange and PE plug, flange mould.
Background technology
All processing methods of PE material have three kinds, be injection mo(u)lding, extrusion molding and rotation molding, wherein in PE pipe fitting production industry, normally come the injection molded pipe fitting with injection machine, the injection machine of present domestic maximum is four myriagrams (40Kg shots), maximum injection opacity can only be got to the pipe fitting of DN630, and for greater than the plug more than the DN800, flange, the weight of its single-piece is all more than 70kg, can't realize injection mo(u)lding with injection machine, therefore, this has brought very big obstacle to applying of large diameter pipeline.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides the preparation method and the mould thereof of a kind of ultra-large caliber PE blanking adapter, flange, solve the technical problem that DN800～DN1600 Series P E plug, flange can't be realized injection mo(u)lding with injection machine.
The technical solution adopted for the present invention to solve the technical problems is:
The preparation method of a kind of ultra-large caliber PE blanking adapter, flange is characterized in that its making step is:
A, the PE raw material are Tumblied Dry, the design temperature of dryer is 65 ℃～70 ℃, and drying time is for being no less than 4 hours.
B, the PE raw material after will drying are presented in the extruder, extrusion die by the outlet of extruder place is squeezed in the ultra-large caliber PE blanking adapter that has cooling water channel, the flange mould again, simultaneously with Electrothermal ring to extruder, extrusion die and ultra-large caliber PE blanking adapter, flange mold heated, the temperature of PE raw material from the extruder to the extrusion die after the oven dry improved gradually, wherein gives the design temperature of the Electrothermal ring that extruder, extrusion die and ultra-large caliber PE blanking adapter, flange mould heat usefulness as shown in the table:
Temperature unit is degree centigrade in the table.
C, give ultra-large caliber PE blanking adapter, the pressurization of flange mould with forcing press, wherein the forcing press dwell pressure is 18～20MPa, and the dwell time is 50～70 minutes.
D, stop the heating, utilize recirculated water by cooling water channel with ultra-large caliber PE blanking adapter, flange mold cools down.
The demoulding after e, the moulding.
F, the PE plug after the demoulding, flange are cooled off naturally, Vehicle Processing is to required serial size then.
Among the above-mentioned steps b, Electrothermal ring can be positioned on the inside and outside wall of the outer wall of outer wall, extrusion die of extruder and compaction forming die.
Among the above-mentioned steps b, the extrusion capacity of extruder can be 600 liters/minute, and the operating current of extruder is 75A.
Described extruder can be single screw extrusion machine, and the screw diameter of extruder is 90mm, and the draw ratio of extruder is 1:33.
Described forcing press can be 500 t hydraulic press, and its table top is 2300*1800mm, high 4000mm.
A kind of ultra-large caliber PE blanking adapter, flange mould, comprise upper die and lower die and core, it is characterized in that: but patrix by the top panel of annular and thread connection in the above the removable pressing mold of changing of plate below form, the removable pressing mold of changing has two covers, one cover is the flange top die, another set of is the pipe cap top die, but counterdie is made up of annular base plate and the removable change owner die body of thread connection above the annular base plate, removable change owner die body also has two covers, one cover is a flange master die body, and another set of is pipe cap master die body; Pipe cap master die body and pipe cap counterdie edge cover are connected into the outer die body of pipe cap with the annular base plate.
Core is positioned at flange master die body, and the core water jacket is arranged on the madial wall of core.
Flange master die body water jacket is arranged on the lateral wall of above-mentioned flange master die body and hang handle.
Pipe cap top die water jacket is arranged on the madial wall of above-mentioned pipe cap top die and the inside bottom surface, the upper edge hole of pipe cap top die has screwed hole, be with externally threaded pipe cap retainer bar to pass top panel, be inserted in the screwed hole, the inside bottom surface of pipe cap top die is to the exhaust bolt that also has been threaded between the outside bottom surface.
Pipe cap master die body water jacket is arranged on the lateral wall of above-mentioned pipe cap master die body.
Be connected with heating plate on the upper surface of above-mentioned pipe cap counterdie edge cover.
Described flange master die body water jacket, core water jacket, pipe cap top die water jacket and pipe cap master die body water jacket can be cast aluminium heating coolant jacket, stainless steel heating coolant jacket or ceramic heat coolant jacket.
Described thread connection can be studs and connects or screw attachment.
Beneficial effect of the present invention is as follows:
The present invention adopts the new technology extrude back compression moulding earlier, started the new technology of preparation heavy caliber pipe fitting, has solved the problem that DN800～DN1600 Series P E plug, flange can't be realized injection mo(u)lding with injection machine.
The present invention is by analyzing injection mo(u)lding, extrusion molding and these processing methods of rotation molding, selected " extrusion molding " as preceding working procedure, because " extrusion molding " can satisfy the requirement of " amount ", and " injection mo(u)lding " is the requirement that can't satisfy " amount ", and mould also is specially to order design, all installs Electrothermal ring on the inside and outside wall of mould, can heat mould, and can dig the system temperature, and designed cooling water channel in the mould simultaneously, adopt the water circulation that mould is cooled off.When mould is warmed to uniform temperature, just the PE material is extruded in the mould, after being full of mould, with regard to the starting pressure machine, to mould pressurize (moulding pressure can reach 500 tons), treat that mould is pressed onto the position, after the formed product, promptly turn off electrical heating, open cooling then, mould is cooled off, to be cooledly get off to make pipe fitting and just become.
The present invention has made full use of the processing characteristics and the temperature characterisitic of PE material, has designed special mould compacting and has formed, and scale of investment is light, and repayment is fast, and social benefit and business economic benefit are obvious, contributes for country promotes, uses heavy-caliber plastic pipe.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a schematic flow sheet of the present invention.
Fig. 2 is the structural representation of flange patrix.
Fig. 3 is the structural representation of flange counterdie.
Fig. 4 is the structural representation of pipe cap patrix.
Fig. 5 is the structural representation of pipe cap counterdie.
Reference numeral: 1-top panel, 2-flange top die, 3-flange master die body, 4-flange master die body water jacket, 5-core water jacket, 6-flange forming cavity, 7-core, 8-hang handle, 9-pipe cap retainer bar, 10-pipe cap top die, 11-pipe cap top die water jacket, 12-pipe cap master die body water jacket, 13-exhaust bolt, 14-pipe cap master die body, 15-pipe cap counterdie edge cover, 16-annular base plate, 17-heating plate, 18-pipe cap forming cavity, 19-screwed hole.
The specific embodiment
Embodiment is referring to shown in Figure 1, the preparation method of this ultra-large caliber PE blanking adapter, flange, and its making step is:
A, the PE raw material are Tumblied Dry, the design temperature of dryer is 65 ℃～70 ℃, and drying time is for being no less than 4 hours.
B, the PE raw material after will drying are presented in the extruder, extrusion die by the outlet of extruder place is squeezed in the ultra-large caliber PE blanking adapter that has cooling water channel, the flange mould again, simultaneously with Electrothermal ring to extruder, extrusion die and ultra-large caliber PE blanking adapter, flange mold heated, the temperature of PE raw material from the extruder to the extrusion die after the oven dry improved gradually, wherein gives the design temperature of the Electrothermal ring that extruder, extrusion die and ultra-large caliber PE blanking adapter, flange mould heat usefulness as shown in the table:
Temperature unit is degree centigrade in the table, can float 40 degrees centigrade downwards in the table temperature range of the Electrothermal ring that extruder, extrusion die heat usefulness.
District to eight district described in the table for the extrusion die that enters the mouth from extruder exports this segment distance, is divided into for 8 segments, and the PE raw material enter from the extruder inlet,, extrudes from the extrusion die exit then successively by arriving eight districts from a district.Wherein PE raw material temperature under the heat effect between a district to eight district, at Electrothermal ring improves gradually.
Electrothermal ring can be positioned on the inside and outside wall of the outer wall of outer wall, extrusion die of extruder and compaction forming die.Described extruder can be single screw extrusion machine, and the screw diameter of extruder is 90mm, and the draw ratio of extruder is 1:33, and the extrusion capacity of extruder is 600 liters/minute, and the operating current of extruder is 75A.
C, give ultra-large caliber PE blanking adapter, the pressurization of flange mould with forcing press, wherein the forcing press dwell pressure can be 18～20MPa, and the dwell time can be 50～70 minutes; Described forcing press can be 500 t hydraulic press, and its table top is 2300*1800mm, high 4000mm.
D, stop the heating, utilize recirculated water by cooling water channel with ultra-large caliber PE blanking adapter, flange mold cools down.
The demoulding after e, the moulding.
F, PE plug, flange after the demoulding are naturally cooled to normal temperature, Vehicle Processing is to required serial size then.
Referring to Fig. 2-5, described ultra-large caliber PE blanking adapter, flange mould, comprise upper die and lower die and core, but patrix by the top panel 1 of annular and thread connection in the above the removable pressing mold of changing of plate 1 below form, the removable pressing mold of changing has two covers, one cover is a flange top die 2, another set of is pipe cap top die 10, but counterdie is made up of annular base plate 16 and the removable change owner die body of thread connection above annular base plate 16, removable change owner die body also has two covers, one cover is a flange master die body 3, and another set of is pipe cap master die body 14; Pipe cap master die body 14 and pipe cap counterdie edge cover 15 are connected into the outer die body of pipe cap with annular base plate 16.
Core 7 is positioned at flange master die body, and core water jacket 5 is arranged on the madial wall of core 7.
Flange master die body water jacket 4 is arranged on the lateral wall of above-mentioned flange master die body 3 and hang 8.
Pipe cap top die water jacket 11 is arranged on the madial wall of above-mentioned pipe cap top die 10 and the inside bottom surface, the upper edge hole of pipe cap top die 10 has screwed hole 19, be with externally threaded pipe cap retainer bar 9 to pass top panel 1, be inserted in the screwed hole 19, the inside bottom surface of pipe cap top die 10 is to the exhaust bolt 13 that also has been threaded between the outside bottom surface.
Pipe cap master die body water jacket 12 is arranged on the lateral wall of above-mentioned pipe cap master die body 14.
Be connected with heating plate 17 on the upper surface of above-mentioned pipe cap counterdie edge cover 15.
Described flange master die body water jacket 4, core water jacket 5, pipe cap top die water jacket 11 and pipe cap master die body water jacket 12 can be cast aluminium heating coolant jacket, stainless steel heating coolant jacket or ceramic heat coolant jacket.
Described thread connection can be studs and connects or screw attachment.
Claims (9)
- The preparation method of [claim 1] a kind of ultra-large caliber PE blanking adapter, flange is characterized in that its making step is:A, the PE raw material are Tumblied Dry, the design temperature of dryer is 65 ℃～70 ℃, and drying time is for being no less than 4 hours;B, the PE raw material after will drying are presented in the extruder, extrusion die by the outlet of extruder place is squeezed in the ultra-large caliber PE blanking adapter that has cooling water channel, the flange mould again, simultaneously with Electrothermal ring to extruder, extrusion die and ultra-large caliber PE blanking adapter, flange mold heated, the temperature of PE raw material from the extruder to the extrusion die after the oven dry improved graduallyC, give ultra-large caliber PE blanking adapter, the pressurization of flange mould with forcing press, wherein the forcing press dwell pressure is 18～20MPa, and the dwell time is 50～70 minutes;D, stop the heating, utilize recirculated water by cooling water channel with ultra-large caliber PE blanking adapter, flange mold cools down;The demoulding after e, the moulding;F, the PE plug after the demoulding, flange are cooled off naturally, Vehicle Processing is to required serial size then.
- The preparation method of [claim 2] a kind of ultra-large caliber PE blanking adapter according to claim 1, flange is characterized in that: among the above-mentioned steps b, Electrothermal ring is positioned on the inside and outside wall of the outer wall of outer wall, extrusion die of extruder and compaction forming die.
- The preparation method of [claim 3] a kind of ultra-large caliber PE blanking adapter according to claim 1, flange is characterized in that: among the above-mentioned steps b, the extrusion capacity of extruder is 600 liters/minute, and the operating current of extruder is 75A.
- The preparation method of [claim 4] a kind of ultra-large caliber PE blanking adapter according to claim 1, flange, it is characterized in that: among the above-mentioned steps b, give the design temperature of the Electrothermal ring that extruder, extrusion die and ultra-large caliber PE blanking adapter, flange mould heat usefulness as shown in the table:Temperature unit is degree centigrade in the table.
- The preparation method of [claim 5] a kind of ultra-large caliber PE blanking adapter according to claim 1, flange is characterized in that: described extruder is a single screw extrusion machine, and the screw diameter of extruder is 90mm, and the draw ratio of extruder is 1: 33.
- The preparation method of [claim 6] a kind of ultra-large caliber PE blanking adapter according to claim 1, flange is characterized in that: described forcing press is 500 t hydraulic press, and its table top is 2300*1800mm, high 4000mm.
- [claim 7] a kind of aforesaid right requires any described ultra-large caliber PE blanking adapter among the 1-5, the flange mould, comprise patrix, counterdie and core, it is characterized in that: patrix by the top panel (1) of annular but and thread connection in the above the removable pressing mold of changing of plate (1) below form, the removable pressing mold of changing has two covers, one cover is flange top die (2), another set of is pipe cap top die (10), counterdie by annular base plate (16) but and thread connection form at the removable change owner die body of annular base plate (16) top, removable change owner die body also has two covers, one cover is a flange master die body (3), and another set of is pipe cap master die body (14); Pipe cap master die body (14) and pipe cap counterdie edge cover (15) are connected into the outer die body of pipe cap with annular base plate (16);Core (7) is positioned at flange master die body, and core water jacket (5) is arranged on the madial wall of core (7);Flange master die body water jacket (4) is arranged on the lateral wall of above-mentioned flange master die body (3) and hang (8);Pipe cap top die water jacket (11) is arranged on the madial wall of above-mentioned pipe cap top die (10) and the inside bottom surface, the upper edge hole of pipe cap top die (10) has screwed hole (19), be with externally threaded pipe cap retainer bar (9) to pass top panel (1), be inserted in the screwed hole (19), the inside bottom surface of pipe cap top die (10) is to the exhaust bolt (13) that also has been threaded between the outside bottom surface;Pipe cap master die body water jacket (12) is arranged on the lateral wall of above-mentioned pipe cap master die body (14);Be connected with heating plate (17) on the upper surface of above-mentioned pipe cap counterdie edge cover (15).
- [claim 8] a kind of ultra-large caliber PE blanking adapter according to claim 6, flange mould is characterized in that: described flange master die body water jacket (4), core water jacket (5), pipe cap top die water jacket (11) and pipe cap master die body water jacket (12) are cast aluminium heating coolant jacket, stainless steel heating coolant jacket or ceramic heat coolant jacket.
- [claim 9] a kind of ultra-large caliber PE blanking adapter according to claim 6, flange mould is characterized in that: described thread connection is that studs connects or screw attachment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103067421A CN101480828B (en) | 2008-12-31 | 2008-12-31 | Method for preparing ultra-large caliber PE blanking adapter and flange, and mold thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103067421A CN101480828B (en) | 2008-12-31 | 2008-12-31 | Method for preparing ultra-large caliber PE blanking adapter and flange, and mold thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101480828A true CN101480828A (en) | 2009-07-15 |
| CN101480828B CN101480828B (en) | 2011-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008103067421A Expired - Fee Related CN101480828B (en) | 2008-12-31 | 2008-12-31 | Method for preparing ultra-large caliber PE blanking adapter and flange, and mold thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102285056A (en) * | 2011-05-31 | 2011-12-21 | 四川泰鑫实业发展有限责任公司 | Thermoplastic-forming processing method for large-diameter PE (Polyurethane) flange head |
| CN103407055A (en) * | 2013-08-15 | 2013-11-27 | 杭州宏升塑胶有限公司 | Preparation method for large polyethylene pipe fitting |
| CN108980487A (en) * | 2018-07-31 | 2018-12-11 | 太仓市宇格明叶环保设备有限公司 | A kind of flange and its preparation process for exhaust-gas treatment air-line system |
-
2008
- 2008-12-31 CN CN2008103067421A patent/CN101480828B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102285056A (en) * | 2011-05-31 | 2011-12-21 | 四川泰鑫实业发展有限责任公司 | Thermoplastic-forming processing method for large-diameter PE (Polyurethane) flange head |
| CN102285056B (en) * | 2011-05-31 | 2014-08-27 | 四川泰鑫实业发展有限责任公司 | Thermoplastic-forming processing method for large-diameter PE (Polyurethane) flange head |
| CN103407055A (en) * | 2013-08-15 | 2013-11-27 | 杭州宏升塑胶有限公司 | Preparation method for large polyethylene pipe fitting |
| CN103407055B (en) * | 2013-08-15 | 2015-07-29 | 杭州宏升塑胶有限公司 | A kind of preparation method of large-scale polyethylene tube |
| CN108980487A (en) * | 2018-07-31 | 2018-12-11 | 太仓市宇格明叶环保设备有限公司 | A kind of flange and its preparation process for exhaust-gas treatment air-line system |
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| Publication number | Publication date |
|---|---|
| CN101480828B (en) | 2011-02-02 |
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