CN104943129A - Plastic extruder - Google Patents
Plastic extruder Download PDFInfo
- Publication number
- CN104943129A CN104943129A CN201510314319.6A CN201510314319A CN104943129A CN 104943129 A CN104943129 A CN 104943129A CN 201510314319 A CN201510314319 A CN 201510314319A CN 104943129 A CN104943129 A CN 104943129A
- Authority
- CN
- China
- Prior art keywords
- heating
- heat
- frequency induction
- machine barrel
- plastic extruder
- 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.)
- Pending
Links
- 229920003023 plastic Polymers 0.000 title claims abstract description 24
- 239000004033 plastic Substances 0.000 title claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 60
- 230000006698 induction Effects 0.000 claims abstract description 30
- 238000001125 extrusion Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010304 firing Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/83—Heating or cooling the cylinders
- B29C48/832—Heating
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Induction Heating (AREA)
Abstract
The invention discloses a plastic extruder which comprises a transmission system, an extrusion system, a heating system and a cooling system, wherein a heating system consists of high-frequency induction coils arranged at the periphery of a cylinder; a feed port is formed at one end of the cylinder; a spiral twisting rod is arranged in the cylinder; and the high-frequency induction coils heat by adopting internal heat, and are made of a special type high-temperature and high-voltage resistant electric cable. The plastic extruder has the advantages that the plastic extruder heats rapidly, is high in utilization ratio and stability, is controllable and adjustable, is lowered in cost and improves the environment.
Description
Technical field
The present invention relates to a kind of plastic extruder.
Background technology
Plastic extruder traditional heating is resistance heated.Plastic force-out machine structure and working mechanism in general, the structure of plastic extruder by transmission system, extrusion system, heating system and cooling system four part form, realize the shaping of plastics and extrude, crucially to have come by extrusion system and heating system.Extrusion system comprises screw rod, machine barrel, hopper, head and mould.Plastics plastify uniformly melt by extrusion system, and in this course under built pressure, are extruded continuously by screw rod.Heating system, by the plastics in external heat machine barrel, makes it to heat up, reaches the temperature required for technological operation.Plastic extruder working mechanism---plastic warp crosses the fuselage feeding section of heat stepwise, melt zone, compression section to head, extrudes from head die core sleeve forming through certain pressure.Realize plastic product normally to extrude, and produce the product meeting standard and user's requirement, must ensure that extruder heating system effectively heats each section of extrusion system (each section of hopper, screw barrel, plastics, head and mould), and make it reach technique extrusion temperature, can meet.Resistive heating system efficient plastic extruder conventional heating system mode of heating: by adopting cast aluminum heaters resistance heated, the machine barrel of extruder extrusion system, screw rod, hopper, head and mould are heated, make it reach technique extrusion temperature, the technique realizing product is extruded.Be exactly specifically that, after the cast aluminum heaters be arranged on above each section of machine barrel switches on power, first cast aluminum heaters internal resistance silk self-heating, after cast aluminium watt absorbs heat, outwards by heat conduction.
At present, raw material is added in machine barrel by charging aperture, be uniformly distributed resistance heated plate in machine barrel surrounding, heating plate is generally made with cast aluminium or cast copper, inlays the resistance wire separated with insulating materials in heating plate, and the electric current of controlling resistance heating controls heating-up temperature.
The shortcoming of traditional resistor silk heating:
1. heat loss is large, and utilization rate is low
Traditional Resistant heating is by coil winding on barrel, and be transmitted on barrel after energising, inside and outside coil, both sides all generate heat, but be only close to machine barrel inboard portion, the heat of about 50% can play heating effect, and the heat leakage of Outboard Sections about 50% is in air, heat loss is large, and utilization rate is low.
2. preheating time is long, unstable product quality
Because after resistance wire energising, heating needs certain hour just can meet the requirements of temperature, and the heat of more than 50% of loss is delayed the preheating time of equipment undoubtedly.When after temperature stabilization, regulate needing the temperature of resistance wire under the exceptions such as out of service or unexpected power failure and need certain hour just can complete, affect product quality.
3. maintenance capacity is large, costly
Due to employing is that resistance wire directly heats, and heating-up temperature is usually up to 300 ° of more than C, resistance wire is easy to high temperature ageing and blows, therefore the service life of resistance wire is not long, mostly be about 6 months, not only the workload of maintaining is large, and the expense changed also is a no small expenditure.
4. dangerous high, environmental condition is poor
Resistance wire two sides all generates heat, and the heat loss of exterior portion is in air, and production environment temperature is even high to 45 ° of more than C, easily causing the scald of workman, especially to during summer operation, will be also aeration-cooling disbursement, both add spending, waste the energy again.
Because this traditional heating mode power consumption is large, heating-up temperature is not easy to control, and is necessary to replace with more advanced mode of heating.
Summary of the invention
The object of the invention is to overcome above deficiency, providing that a kind of Fast Heating, utilization rate are high, controllable, stability is high, reduce costs, the plastic extruder of environmental protect.
Object of the present invention is achieved through the following technical solutions: a kind of plastic extruder, comprise transmission system, extrusion system, heating system and cooling system, heating system is radio-frequency induction coil, radio-frequency induction coil is placed in machine barrel periphery, one end of machine barrel is charging aperture, be provided with spiral lease rods in machine barrel, heat heating in radio-frequency induction coil adopts, radio-frequency induction coil adopts the cable of special high temperature-resistant high pressure.
Further improvement of the present invention is: the main frame of radio-frequency induction coil adopts industrial machine plate, Controlled by micro computer, multi-way intelligence closed-loop system and protection system.
Further improvement of the present invention is: machine barrel outer wrapping one deck insulated heat heat-insulation layer.
The present invention compared with prior art has the following advantages:
1. Fast Heating, utilization rate is high:
Heat heating in high-frequency induction heating technology adopts, machine barrel senses that magnetic energy can self-heating, and firing rate is fast, and compare the preheating time that Resistant heating shortens 60%, firing rate is fast.Due to machine barrel self-heating, add machine barrel outer wrapping one layer of heat preservation layer, heat concentrates in machine barrel, and utilization rate, up to more than 95%, can save more than electric energy 30%-70%.
2. controllable, stability is high:
The main frame of HF induction heating apparatus adopts current state-of-the-art industrial machine plate, Controlled by micro computer, multi-way intelligence closed-loop system and perfect defencive function, effectively prevent main frame aging phenomenon, fully can ensure equipment long-term safety, stable operation.Even if run into emergency case, need to heat up or cooling, generate heat due to machine barrel induction magnetic energy, so temperature also can reach requirement very soon, product quality is effectively ensured.
3. reduce costs:
Radio-frequency induction coil part adopts the cable of special high temperature-resistant high pressure, and heating cables itself can not produce heat, and can tolerate the high temperature of 500 ° of C, and service life can reach more than 5 years.Avoid the drawback that resistance-type heating needs often to safeguard and regularly replace heating collar, this structure later stage reduces production cost substantially without maintenance cost.
4. environmental protect:
Because HF induction heating apparatus adopts interior hot mode, heat accumulation is inner in calandria, and outside heat dissipates almost not to be had.Equipment surface human body is tangible, and environment temperature is reduced to normal temperature from more than 100 degree during original electrical coil resistance heating, substantially improves the working environment of production scene, the enthusiasm that favourable raising workman produces, and reduces plant area's ventilation in summer expense.
Therefore, be no matter energy-efficient, reduce costs aspect, still improve the quality of products, aspect of optimizing the environment, high-frequency induction heating is all the application technology had superiority very much.
accompanying drawing illustrates:
Fig. 1 is structural representation of the present invention;
Number in the figure: 1-radio-frequency induction coil, 2-machine barrel, 3-charging aperture, 4-spiral lease rods, 5-insulated heat heat-insulation layer.
detailed description of the invention:
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, and this embodiment only for explaining the present invention, does not form limiting the scope of the present invention.
As Fig. 1 shows a kind of embodiment of plastic extruder of the present invention, a kind of plastic extruder, comprise transmission system, extrusion system, heating system and cooling system, it is characterized in that: described heating system is radio-frequency induction coil 1, it is peripheral that radio-frequency induction coil 1 is placed in machine barrel 2, and one end of machine barrel 2 is charging aperture 3, is provided with spiral lease rods 4 in machine barrel 2, radio-frequency induction coil 1 adopts interior heat heating, and radio-frequency induction coil 1 adopts the cable of special high temperature-resistant high pressure.The main frame of radio-frequency induction coil 1 adopts industrial machine plate, Controlled by micro computer, multi-way intelligence closed-loop system and protection system.Machine barrel 2 outer wrapping one deck insulated heat heat-insulation layer 5.
Hi-frequency electromagnetic heater: electromagnetic heater is a kind of device utilizing electromagnetic induction principle electric energy conversion to be become heat energy, electromagnetic heating controller is by 220V, the AC rectification of 50/60HZ becomes direct current, direct current is changed into the high-frequency high-voltage that frequency is 20-40KHZ again, or the three-phase alternating current of 380v 50/60HZ convert to direct current again direct current is converted to 10-30KHZ D' Arsonval current electricity, be used for industrial products heating.Electromagnetic heating coil: the high-frequency high-voltage current of change at a high speed flows through the alternating magnetic field that coil can produce change at a high speed, when with containing container made of iron place above time, vessel surface and tool cut alternate magnetic force line and produce the electric current (i.e. eddy current) of alternation at container bottom metallic member, eddy current makes the iron atom high speed random motion of internal tank, and atom collides with each other, rub and produce heat energy.Thus play the effect of heating objects.Namely being by being magnetic energy electric energy conversion, making to be heated steel body surface and producing a kind of mode of heating of inductive loop.This mode fundamentally solves the resistance-type such as electric heating piece, electric heating coil, adds the low problem of the thermogenetic thermal efficiency by heat exchange pattern.
Heat heating in high-frequency induction heating technology adopts, machine barrel senses that magnetic energy can self-heating, and firing rate is fast, and compare the preheating time that Resistant heating shortens 60%, firing rate is fast.Due to machine barrel self-heating, add machine barrel outer wrapping one deck insulated heat heat-insulation layer, heat concentrates in machine barrel, and utilization rate, up to more than 95%, can save more than electric energy 30%-70%.
The main frame of HF induction heating apparatus adopts current state-of-the-art industrial machine plate, Controlled by micro computer, multi-way intelligence closed-loop system and perfect defencive function, effectively prevent main frame aging phenomenon, fully can ensure equipment long-term safety, stable operation.Even if run into emergency case, need to heat up or cooling, generate heat due to machine barrel induction magnetic energy, so temperature also can reach requirement very soon, product quality is effectively ensured.
Radio-frequency induction coil part adopts the cable of special high temperature-resistant high pressure, and heating cables itself can not produce heat, and can tolerate the high temperature of 500 ° of C, and service life can reach more than 5 years.Avoid the drawback that resistance-type heating needs often to safeguard and regularly replace heating collar, this structure later stage reduces production cost substantially without maintenance cost.
Because HF induction heating apparatus adopts interior hot mode, heat accumulation is inner in calandria, and outside heat dissipates almost not to be had.Equipment surface human body is tangible, and environment temperature is reduced to normal temperature from more than 100 degree during original electrical coil resistance heating, substantially improves the working environment of production scene, the enthusiasm that favourable raising workman produces, and reduces plant area's ventilation in summer expense.
Therefore, be no matter energy-efficient, reduce costs aspect, still improve the quality of products, aspect of optimizing the environment, high-frequency induction heating is all the application technology had superiority very much.
Claims (3)
1. a plastic extruder, comprise transmission system, extrusion system, heating system and cooling system, it is characterized in that: described heating system is radio-frequency induction coil (1), it is peripheral that described radio-frequency induction coil (1) is placed in machine barrel (2), one end of described machine barrel (2) is charging aperture (3), be provided with spiral lease rods (4) in described machine barrel (2), heat heating in described radio-frequency induction coil (1) adopts, described radio-frequency induction coil (1) adopts the cable of special high temperature-resistant high pressure.
2. plastic extruder according to claim 1, is characterized in that: the main frame of described radio-frequency induction coil (1) adopts industrial machine plate, Controlled by micro computer, multi-way intelligence closed-loop system and protection system.
3. plastic extruder according to claim 1, is characterized in that: described machine barrel (2) outer wrapping one deck insulated heat heat-insulation layer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510314319.6A CN104943129A (en) | 2015-06-10 | 2015-06-10 | Plastic extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510314319.6A CN104943129A (en) | 2015-06-10 | 2015-06-10 | Plastic extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104943129A true CN104943129A (en) | 2015-09-30 |
Family
ID=54158448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510314319.6A Pending CN104943129A (en) | 2015-06-10 | 2015-06-10 | Plastic extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104943129A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107896392A (en) * | 2017-10-30 | 2018-04-10 | 杭州富芝科技有限公司 | A kind of full-automatic heating in medium frequency machine of long bar |
| CN110091486A (en) * | 2019-06-03 | 2019-08-06 | 浙江松华新材股份有限公司 | A kind of processing method that induction heating squeezes out polytetrafluoroethylsteel steel bar |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102133795A (en) * | 2011-01-26 | 2011-07-27 | 新疆天业节水灌溉股份有限公司 | Air-cooled electromagnetic heating device for plastic extrusion equipment |
| CN104354285A (en) * | 2014-10-16 | 2015-02-18 | 洪雅县三利塑业有限公司 | Plastic melting device |
-
2015
- 2015-06-10 CN CN201510314319.6A patent/CN104943129A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102133795A (en) * | 2011-01-26 | 2011-07-27 | 新疆天业节水灌溉股份有限公司 | Air-cooled electromagnetic heating device for plastic extrusion equipment |
| CN104354285A (en) * | 2014-10-16 | 2015-02-18 | 洪雅县三利塑业有限公司 | Plastic melting device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107896392A (en) * | 2017-10-30 | 2018-04-10 | 杭州富芝科技有限公司 | A kind of full-automatic heating in medium frequency machine of long bar |
| CN110091486A (en) * | 2019-06-03 | 2019-08-06 | 浙江松华新材股份有限公司 | A kind of processing method that induction heating squeezes out polytetrafluoroethylsteel steel bar |
| WO2020244360A1 (en) * | 2019-06-03 | 2020-12-10 | 浙江松华新材股份有限公司 | Processing method for extruding polytetrafluoroethylene bar by induction heating |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150930 |
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| RJ01 | Rejection of invention patent application after publication |