CN102275277A

CN102275277A - Integrated heating and energy saving charging barrel

Info

Publication number: CN102275277A
Application number: CN2011101405088A
Authority: CN
Inventors: 孙健
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-28
Filing date: 2011-05-28
Publication date: 2011-12-14

Abstract

The invention discloses an integrated heating and energy saving charging barrel which comprises tube cores, a sleeve, a medium-frequency sensor, an insulating lining, a wire holder, a magnetic shielding shell, a thermoelectric couple, a feeding tube and a injecting head. The integrated heating and energy saving charging barrel is characterized in that a group of tube cores are sheathed into the sleeve, the medium-frequency sensor is cured outside the sleeve by the insulating lining, the magnetic shielding shell is sleeved on the outermost layer, the feeding tube and the injecting tube are fastened by connecting flanges at two ends of the charging barrel, and the tube cores are clamped and axially fixed. The overall appearance of the integrated heating and energy saving charging barrel is similar to that of a common charging barrel, the traditional split heating mode of a charging barrel and a heating ring is changed into integrated medium-frequency sensing heating mode. The integrated heating and energy saving charging barrel can greatly improve the heating speed of the charging barrel, accelerate melting of plastics and improve the temperature control precision, improve the production efficiency, reduce heat dissipation outside the charging barrel, and has an obvious energy saving effect; the service life of the charging barrel is greatly prolonged; and the charging barrel is convenient and fast to install and replace. The integrated heating and energy saving charging barrel is applicable to injection molding machines of various specifications.

Description

Integrated heating and energy saving barrel

Technical field

Patent of the present invention relates to injecting machine material tube, and particularly integrated heating and energy saving barrel belongs to the plastics machinery field.

Background technology

Injection machine plasticizing system and drive system are two big systems of its power consumption, respectively account for injection machine power consumption pact half, main flow injection machine manufacturer has all adopted the energy-conservation sharp weapon of converter technique as drive system at present, and the plasticizing system---the barrel heating also rests on the initial resistance wire heating collar stage, it discharges hop count according to the barrel size, connect by the microcomputerized control heating, such external heating mode heats up slowly, thermal loss is big, the life-span is short, power consumption is high, causes very big waste.

Some present barrel heating and energy saving modification schemes are infrared heating collar or the high-frequency induction coil that adds the band heat-insulation layer in the outside of original barrel, and the high frequency about so-called 20KHz is just 1, the 2 millimeters eddy-current heating in the top layer of barrel, but the barrel wall thickness is generally all more than tens millimeters, it is still inner by the heat exchange pattern heating, in fact the thermal effect that adds of barrel is more or less the same with the resistive band mode of heating thus, and the electric energy of its saving mainly still is to bring by having reduced the loss of barrel outside heat after the insulation.

Injecting machine material tube surely belongs to easily-consumed products in the normal activity of injection machine; the nitriding barrel of former factory normally uses short then 3 ~ 6 months; long only one or two years, (wearing and tearing back) promptly must be changed; the service life of heating collar neither be very long; also to experience repeatedly dismounting, installation, debugging; change these parts or shutdown maintenance and then make a large amount of financial resources, material resources and the fault power times of manufacturer's cost, productivity effect obviously is affected.

Summary of the invention

The objective of the invention is to overcome the deficiencies in the prior art, improve the injecting machine material tube mode of heating, improve the efficiency of heating surface, cut down the consumption of energy, prolong the service life of barrel, make maintenance, the replacing more convenient and quicker of barrel.

According to technical scheme provided by the invention, a kind of integrated heating and energy saving barrel comprises tube core, sleeve, intermediate frequency inductor, insulating lining, the magnetic screen shell, junction block, thermocouple, feeding cylinder and injection head, it is characterized in that advancing sleeve one group of tube core is nested, solidify intermediate frequency inductor in the sleeve outside with insulating lining, the sleeve two ends connect feeding cylinder and injection head by ring flange and are fixed by its tube core, put the magnetic screen shell at outermost layer.Its overall appearance is similar to common barrel, and the split type heating mode traditional barrel+heating collar changes the integral type Frequency Induction Heating into.

Compared with prior art, the invention has the advantages that:

1, Frequency Induction Heating diathermanously evenly heats up rapidly, can accurately control heating-up temperature, and barrel preheating time can enhance productivity less than original 1/3rd.

2, good effect of heat insulation, the barrel surface temperature is low, can directly touch the protective cover of barrel outside and does not have burning heat sensation, avoids the scald accident, can also lower the workshop temperature in summer.

3, the replacing of barrel tube core is efficient and convenient, surpasses ten times of former factory nitriding barrel in barrel service life, and the wearing and tearing back only needs to change tube core, and integrated heating and energy saving barrel can be accomplished and the same life-span of injection machine, saves the expense of changing barrel.

4, reduced the barrel pipe thickness, reduced the use of alloy material, reduced thermal inertia, can realize reloading fast and clean and cooling.

5, the injection machine that integrated heating cylinder is installed can be saved electricity consumption 40% ~ 80%, remarkable in economical benefits than traditional injection moulding machine barrel heating part.

The present invention will be further described below in conjunction with concrete drawings and Examples.

Description of drawings

Fig. 1 is the scheme of installation of electric heating coil barrel heater;

Fig. 2 is an integrated energy-saving heating cylinder structural representation;

Fig. 3 is the tube core structure schematic diagram;

Fig. 4 is tube core, bush attaching structure schematic diagram;

Fig. 5 is a Medium frequency induction circle mounting structure schematic diagram;

Fig. 6 is integrated heating and energy saving barrel appearance figure.

The specific embodiment

Integrated heating and energy saving barrel of the present invention comprises tube core 1, sleeve 2, Medium frequency induction circle 3, insulating lining 4, magnetic screen shell 5, junction block 6, thermocouple 7, feeding cylinder 8 and injection head 9.

Integrated heating and energy saving barrel of the present invention, be to advance in the sleeve of making by the superhigh intensity seamless steel pipe 2 pairing gold tube core 1 is nested, outside sleeve 2, put Medium frequency induction circle 3, the insulating lining of being made by the high-temperature insulation heat insulation nano composite material 4 is Medium frequency induction circle 3 parcels and fixing, the sleeve two ends connect feeding cylinder 8 and injection head 9 by ring flange and are fixed by its tube core, and outermost layer is magnetic screen shell (Fig. 2).

Described tube core 1 is made for the bimetallic alloy material, and is high temperature resistant, corrosion-resistant, forms a cover bimetal charging barrel inner core (Fig. 3) by the tube core that several segment length equate.

Described sleeve 2 is made by the superhigh intensity seamless steel pipe, and the compressive resistance behind the nested tube core doubles the injection pressure of barrel.(Fig. 4).

Described intermediate frequency inductor 3 is made up of with the curing of nano composite material parcel the spiral winding of flat copper bar segmentation coiling again, a plurality of zones of heating of corresponding barrel respectively, this composite is formed insulating lining 4, and has a higher compressive resistance, the outside is covered with magnetic screen shell 5, lead-out wire and joint are arranged in order to be connected intermediate frequency induction heating power supply, have the corresponding different warm areas of radial direction through hole on the inductor shell) in order to thermocouple 7(Fig. 5 to be installed.

Barrel elongatedness direction generally is divided into feeding section (transportation section), compression section (fluxing zone) and metering section (homogenizing zone), this example constitutes one group by 3 wear-resisting tube cores, its total length is slightly less than the length of tube core sleeve, closely be nested in the tube core sleeve inner, the barrel two ends connect injection head and feeding cylinder respectively by ring flange, and suppress wear-resisting tube core by injection head and feeding cylinder at the barrel two ends.The homogenizing zone wearing and tearing of ordinary circumstance blanking tube are very fast, when finding that barrel need be safeguarded, can be transposed to this end continuation use that barrel connects injection head to unworn tube core, the last tube core tube core that also only need more renew that all worn and torn, and other parts of barrel needn't be changed, only need pull out, insert connector when dismounting and installation barrel and get final product, heating system must not debugged again yet, makes barrel maximization in service life, the final saving cost of realizing reduces consuming.

Coil is the heart of inductor, and induction coil produces powerful magnetic field under the effect of electric current, and this magnetic field makes barrel produce eddy current and generates heat.Coil is the key point that electric energy converts heat energy to, so the design of coil is extremely important, this coil is the actual operating position in conjunction with barrel, according to the electromagnetic field principle, and the definite preferred version by the calculating of computer professional software, adopt up-to-date coil anti-and around technology, better assemble magnetic field, improve the magnetic field mixing power, the error of the design power of induction coil and actual motion power is not more than 5%, the insulation of coil and installation site are guaranteed by nano composite material parcel and curing.Adopt 500 ~ 8000HZ intermediate frequency power supply to drive induction coil, wall thickness according to barrel is determined output frequency, adopt diathermanous technology elimination table, the core temperature difference, compare by the barrel real time temperature of the thermocouple feedback that is installed in different warm areas and the temperature of setting, automatically regulate intermediate frequency power supply output (0 ~ 100%) power, switch to corresponding induction coil rapidly this section barrel is carried out quick scale-free heating.

The design of the wall thickness dimension of machine barrel mainly is that the intensity aspect that the condition of work from machine barrel needs is considered, is exactly to need the aspect consideration from technological temperature controlled condition more again.The wall thickness of the former factory of the wall ratio of the tube core+sleeve of present embodiment barrel barrel is little more than one times, thermal capacity be its 1/3rd, so the cleaning of barrel cooling is also fast many.

More than a kind of integrated heating and energy saving barrel provided by the invention has been done detailed introduction, used concrete example herein principle of the present invention and embodiment set forth, the explanation of above example is used for helping to understand method of the present invention and thought thereof; Simultaneously, for the those skilled in the art in present technique field, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims

1. integrated heating and energy saving barrel of injection machine, comprise tube core 1, sleeve 2, intermediate frequency inductor 3, insulating lining 4, screening can 5, junction block 6, thermocouple 7, feed pipe 8, injection head 9 is formed, and it is characterized in that: enter sleeve 2 inside tube core 1 is nested, outside sleeve 2, put intermediate frequency inductor 3, Medium frequency induction circle parcel and fixing, outermost layer is a magnetic screen shell 5 by insulating lining 4, by the mounting flange at feeding cylinder 8 and injection head 9 usefulness barrel two ends the tube core axial restraint, have several axially extending bores on the magnetic screen shell 5 and be used to install thermocouple 7, also have a few set of connections seats 6 that inductor is connected to outside medium frequency induction power supply.

2. integrated heating and energy saving barrel as claimed in claim 1 is characterized in that: intermediate frequency inductor 3 is solidificated in sleeve 2 peripheries by insulating lining 4, and its induction frequencies is the intermediate frequency between 500 ~ 8000Hz.

3. integrated heating and energy saving barrel as claimed in claim 1 is characterized in that: tube core 1 is that the inwall working face is the bimetallic tube core that high abrasion and resistant material are formed, and forms a jacking bobbin core by one to several sections tube cores.

4. integrated heating and energy saving barrel as claimed in claim 1 is characterized in that: sleeve 2 is to be made by the superhigh intensity seamless steel pipe, and under the prerequisite that guarantees barrel compressive resistance and mechanical strength the attenuate pipe thickness.

5. integrated heating and energy saving barrel as claimed in claim 1 is characterized in that: insulating lining 4 is that primary raw material is made by the nano ceramics hollow bead, insulate and has higher compressive resistance.

6. integrated heating and energy saving barrel as claimed in claim 1 is characterized in that: magnetic screen shell 5 magnetic shielding materials are made, and its surface has several axially extending bores and is used to install thermocouple 7, respectively the different warm areas of corresponding barrel.