CN201300524Y - A high-frequency heating device for injection molding machine - Google Patents
A high-frequency heating device for injection molding machine Download PDFInfo
- Publication number
- CN201300524Y CN201300524Y CNU2008201323240U CN200820132324U CN201300524Y CN 201300524 Y CN201300524 Y CN 201300524Y CN U2008201323240 U CNU2008201323240 U CN U2008201323240U CN 200820132324 U CN200820132324 U CN 200820132324U CN 201300524 Y CN201300524 Y CN 201300524Y
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- gun barrel
- control device
- injection machine
- heat
- circuit
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Abstract
The utility model discloses a high-frequency heating device for injection molding machine, which comprises a gun barrel, a circuit control device of injection molding machine, an ac power supply, a rectifier circuit and an amplifier circuit which are controlled by the circuit control device; an efficient heat insulation layer is wrapped on the outer cylindrical surface of the gun barrel, groups of high-frequency induction coils are arranged on the outer surface of the efficient heat insulation layer; the ac power supply controlled by the control device is connected with a high-frequency pulse generator through the rectifier circuit. The high-frequency heating device adopts electromagnetic induction principle to convert electric power into heat energy and generates heat through integral magnetic induction of the metal gun barrel to heat and melt plastics material; as the gun barrel is protected by the efficient heat insulation layer, the temperature is ensured to be real-time and accurate through the circuit control device and a sensor; the plastics material is heated and completely molten through heat generated by the metal gun barrel induction, so as to prevent heat from spreading outwards; the quality of injection products and the production efficiency are improved; meanwhile, site work environment is improved. The problems of energy waste, environmental protection, product quality and production efficiency found in injection molding equipment in prior art are solved.
Description
Technical field
The utility model belongs to the injection-moulding device technical field, relates to a kind of thermatron structure, is specifically related to a kind of injection machine thermatron.
Background technology
Injection machine of the prior art is after utilizing injection machine heating gun barrel with the plastic material fusion, by the screw rod that is provided with in the injection machine or the thrust of plunger, the plastics that will plastify molten condition (being viscous state) are gone in the closed good die cavity with the high pressure fast injection, obtain the technical process of goods after solidifying and setting.
Can be divided into according to plasticizing mode injection machine: screw and plunger type; According to the arrangement mode of injection device and clamping apparatus, injection machine can be divided into: vertical, Lying formula and angie type.Being most widely used at present is horizontal screw formula injection machine.Injection machine is to heat by being coated on the outer resistance wire energising of heating gun barrel, or by being distributed in the electromagnet electromagnetic eddy induction heating back heating on the gun barrel, makes the gun barrel that generates heat with the plastic material fusion for the mode of heating of plastic material.These modes, heat is delivered to heat on the gun barrel by the contact conduction, the heat that only abuts against the gun barrel inboard is delivered in the tube, the heat major part in the resistance wire or the electromagnetic induction gas ket outside is lost in the air, owing in heat transfer process, always there is a large amount of heat loss, will cause processing site high temperature and sultry, work under bad environment; Resistance wire heated type resistance wire itself produces high temperature in addition, its heat slowly is transmitted to the center low-temperature space of gun barrel again from gun barrel outer surface high-temperature region then, transmission speed is slow, and the plastic material actual temperature and the gun barrel surface temperature that are positioned at the gun barrel center have than mistake, though resistance wire stops heating when the plastic cement temperature reaches requirement, but owing to there is temperature error, still continue to gun barrel conducted inside heat on the gun barrel surface, cause temperature control inaccurate, both influenced the injection mo(u)lding quality, also reduced production efficiency, therefore existing injection machine exists time-consuming expense electricity and influences the problem of product quality and output.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure; the injection machine thermatron of energy-conserving and environment-protective; it adopts the high-frequency induction heating principle; produce heat heating plastic material by the whole magnetic induction of metal gun barrel; temperature control in real time accurately; because the gun barrel skin has the protection of effectively insulating layer; the heat that the induction of metal gun barrel produces is substantially all absorbed by plastic material; make raw material carry out fusion completely; effectively stoped heat to external diffusion; when improving injection-molded item injection moulding quality and production efficiency; also improved the work on the spot environment, it is big to have solved existing injection-moulding device energy waste; environmental pollution is serious; the not high and low problem of production efficiency of product quality.
The technical scheme that the utility model adopted is, a kind of injection machine thermatron, the high frequency control circuit that comprises gun barrel, injection machine circuit control device and the control of injection machine circuit control device, outer round surface parcel one deck effectively insulating layer at gun barrel, be provided with some groups of radio-frequency induction coils at effectively insulating layer outer surface, in gun barrel, also evenly be distributed with sensor.
Described some groups of radio-frequency induction coils axially evenly distribute along gun barrel and are installed in effectively insulating layer outer surface.
The AC power of described injection machine circuit control device control is connected with high frequency pulse generator through rectification circuit, and described radio-frequency induction coil is connected with MCU by high frequency pulse generator.
The utility model injection machine thermatron is to utilize electromagnetic induction principle to convert electrical energy into the device of heat energy; high frequency controller is with 220V; the alternating current of 50/60Hz becomes direct current; direct current being converted to frequency is the 20-40Hz high-frequency high-voltage again; produce heat heating plastic material by the whole magnetic induction of metal gun barrel; by circuit control device and sensor control temperature; in real time accurately; because the gun barrel skin has the protection of effectively insulating layer; the heat that the induction of metal gun barrel produces substantially all is used for the plastic material heating; make raw material carry out fusion completely; effectively stoped heat to external diffusion; improve injection-molded item quality and efficient, solved the energy that existing injection-moulding device exists; environmental protection; the problem of quality and efficient.
Description of drawings
Fig. 1 is the utility model injection machine thermatron structural representation;
Fig. 2 is the utility model injection machine thermatron partial sectional view;
Fig. 3 is the utility model injection machine thermatron control circuit schematic diagram.
Among the figure, 1. gun barrel, 2. injection machine circuit control device, 3. high frequency pulse generator, 4. AC power, 5. effectively insulating layer, 6. radio-frequency induction coil, 7. sensor, 8. casing drum, 9. die head, 10. drive circuit, 11. amplifying circuits, 12 resonance circuits.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
A kind of injection machine thermatron, as depicted in figs. 1 and 2, a kind of injection machine thermatron comprises the high frequency control circuit that gun barrel 1, injection machine circuit control device 2 and injection machine circuit control device 2 are controlled; Outer round surface parcel one deck effectively insulating layer 5 at gun barrel 1 is provided with some groups of radio-frequency induction coils 6 at effectively insulating layer 5 outer surface, also evenly is distributed with sensor 7 in gun barrel 1.
The some groups of radio-frequency induction coils 6 that are provided with axially evenly distribute along gun barrel 1 and are installed in effectively insulating layer 5 outer surface; The AC power of circuit control device 2 controls is connected with high frequency pulse generator 3 through rectification circuit, and radio-frequency induction coil 6 is connected with MCU by high frequency pulse generator 3.
The utility model injection machine with the thermatron control circuit as shown in Figure 3, connect power supply during use, plastic material is injected in the gun barrel 1 from casing drum 8, circuit control device 2 is with 220V, the alternating current of 50/60Hz becomes direct current, direct current being converted to frequency is the 20-40Hz high-frequency high-voltage again, the high-frequency high-voltage current that changes flows through the alternating magnetic field of the radio-frequency induction coil 6 generation high speed variations that are coated on gun barrel 1 outside at a high speed, when the magnetic line of force in the magnetic field can produce countless little eddy current during by magnetic conductive metal gun barrel 1 in metal gun barrel 1, metal gun barrel 1 itself is generated heat at a high speed voluntarily, thereby reach the plastic material in the heating gun barrel 1, make its fusion, and then the plastic cement of fusing is gone into injection mo(u)lding in closed die head 9 die cavities with screw rod with the high pressure fast injection.Owing to be provided with one deck effectively insulating layer 5 between radio-frequency induction coil 6 and the gun barrel 1, make the heat of gun barrel 1 inside have only trace to be radiated in the air, the utility model is than existing injection machine saves energy 40%-60% after tested, and is more obvious for high-power injection machine power savings.It is that heated metal gun barrel 1 is by self electric current heating that the utility model adopts high-frequency induction, heat energy is by gun barrel 1 whole the generation, for making temperature control in real time accurately, in gun barrel 1, also evenly be distributed with sensor 7, gun barrel 1 inside and outside temperature unanimity, in a single day plastic material is heated to the temperature of setting molten condition in the gun barrel, sensor 7 can send signal to injection machine circuit control device control current switching, thereby control high frequency control circuit, high frequency control circuit will stop to heat automatically, therefore realized that temperature control in real time accurately, has improved product quality, greatly enhanced productivity.Again because different with other mode of heating, radio-frequency induction coil 6 hull-skin temperatures are low, it can not burn foreign matter, plastic grain, greasy dirt, the dust that is adsorbed on its surface, can not produce pernicious gas yet, improved the condition of work of production scene, help operating personnel's physical and mental health, work situation greatly takes on a new look.
Above-mentioned embodiment is an example of the present utility model; not enforcement and the interest field that is used for limiting utility model; all equivalences of making according to the described content of the utility model patent protection scope change and modify, and all should be included in the utility model claim.
Claims (3)
1, a kind of injection machine thermatron, the high frequency control circuit that comprises gun barrel (1), injection machine circuit control device (2) and injection machine circuit control device (2) control, it is characterized in that, outer round surface parcel one deck effectively insulating layer (5) at gun barrel (1), be provided with some groups of radio-frequency induction coils (6) at effectively insulating layer (5) outer surface, in gun barrel (1), also evenly be distributed with sensor (7).
2, injection machine thermatron according to claim 1 is characterized in that, described some groups of radio-frequency induction coils (6) axially evenly distribute along gun barrel (1) and are installed in effectively insulating layer (5) outer surface.
3, injection machine thermatron according to claim 1, it is characterized in that, the AC power of described injection machine circuit control device (2) control is connected with high frequency pulse generator (3) through rectification circuit, and described radio-frequency induction coil (6) is connected with MCU by high frequency pulse generator (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201323240U CN201300524Y (en) | 2008-08-06 | 2008-08-06 | A high-frequency heating device for injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201323240U CN201300524Y (en) | 2008-08-06 | 2008-08-06 | A high-frequency heating device for injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201300524Y true CN201300524Y (en) | 2009-09-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201323240U Expired - Fee Related CN201300524Y (en) | 2008-08-06 | 2008-08-06 | A high-frequency heating device for injection molding machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN201300524Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708652B (en) * | 2009-10-16 | 2012-01-25 | 安徽鑫阳能源开发有限公司 | Heating brick of plastic-adsorption machine |
| CN102529052A (en) * | 2012-01-18 | 2012-07-04 | 常州兰喆仪器仪表有限公司 | Melting and moulding device of injection moulding machine |
| PL424979A1 (en) * | 2018-03-21 | 2019-09-23 | Instytut Inżynierii Materiałów Polimerowych I Barwników | Screw extruder |
| CN112317941A (en) * | 2020-11-26 | 2021-02-05 | 中国核动力研究设计院 | Method and system for cutting main pipeline of reactor primary loop by high-frequency electric heating |
-
2008
- 2008-08-06 CN CNU2008201323240U patent/CN201300524Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708652B (en) * | 2009-10-16 | 2012-01-25 | 安徽鑫阳能源开发有限公司 | Heating brick of plastic-adsorption machine |
| CN102529052A (en) * | 2012-01-18 | 2012-07-04 | 常州兰喆仪器仪表有限公司 | Melting and moulding device of injection moulding machine |
| CN102529052B (en) * | 2012-01-18 | 2014-06-04 | 常州兰喆仪器仪表有限公司 | Melting and moulding device of injection moulding machine |
| PL424979A1 (en) * | 2018-03-21 | 2019-09-23 | Instytut Inżynierii Materiałów Polimerowych I Barwników | Screw extruder |
| CN112317941A (en) * | 2020-11-26 | 2021-02-05 | 中国核动力研究设计院 | Method and system for cutting main pipeline of reactor primary loop by high-frequency electric heating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090902 Termination date: 20100806 |