CN101181817A - Inlaid plasticizing charging barrel heating arrangement - Google Patents
Inlaid plasticizing charging barrel heating arrangement Download PDFInfo
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- CN101181817A CN101181817A CNA2007100325751A CN200710032575A CN101181817A CN 101181817 A CN101181817 A CN 101181817A CN A2007100325751 A CNA2007100325751 A CN A2007100325751A CN 200710032575 A CN200710032575 A CN 200710032575A CN 101181817 A CN101181817 A CN 101181817A
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- charging barrel
- plasticizing charging
- inlaid
- bar
- fire
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Abstract
The invention discloses a heating structure of an inlay type plasticizing material tube, and comprises a plasticizing material tube and a heater. The heater is a heating bar; the circumferential surface of the plasticizing material tube is provided with a spiral groove, in which the heating bar is inlaid; meanwhile, two ends of the heating bar are connected with power by a connection post. The heating structure of the inlay type plasticizing material tube is characterized by simple and reasonable structure, high thermal efficiency and good durability.
Description
Technical field
The present invention relates to the injecting machine material tube heating technique, particularly a kind of inlaid plasticizing charging barrel heating arrangement.
Background technology
Injecting machine material tube need be provided with electric heating device it is heated, at present general electric heating device such as Fig. 1～shown in Figure 3, heater 2 is fixed on the plasticizing charging barrel 1 in the mode of clip, resistance wire 20 energising backs in the heater 2 produce heat, process plasticizing charging barrel 1 is passed to the plastics in the plasticizing charging barrel 1, plasticized screw with the plastics compacting of solid shape, mixing, makes it to be converted into the melt that temperature evenly distributes, has uniform density, viscosity and component in modes such as rotation, rectilinear motions.There is following shortcoming in this heating arrangement:
One, 2 service lifes of heater are short: as shown in Figure 3, the structure of heater 2 is that resistance wire 20 wraps in the mica-sheet insulation layer 21, and the outside covers with stainless steel thin slice 22 and shields as epidermis, but resistance wire 20 moisture-sensitive or oxidation be and easily broken, and its service life is short.
Two, the thermal efficiency is low: heater 2 has only one side to conduct heat to plasticizing charging barrel 1, and other three heats that resistance wire 20 energisings are produced distribute to air, and the heat that resistance wire 20 energisings produce has only about 40% to be utilized effectively, and heat utilization efficiency is low.
Three, plasticizing charging barrel 1 heats up slow: because the thermal efficiency is low, it is very slow to make that plasticizing charging barrel 1 heats up, and heater 20 not only will provide heat required when plastifying plastics, also will guarantee certain heat temperature raising speed, otherwise can influence the utilization rate of injection machine.
Four, this heating arrangement needs often to safeguard: because the effect of repeatedly expanding with heat and contract with cold can produce the gap between plasticizing charging barrel 1 and the heater 2, influence heat transfer efficiency, need often to safeguard plasticizing charging barrel 1 and heater 2 are close to.
Five, maintenance difficulty: resistance wire 20 blew in high temperature (about 250 ℃) time, can not generate heat, and when normal temperature detects resistance wire 20, because resistance wire 20 effect of expanding with heat and contract with cold, the resistance wire 20 that the condition of high temperature opens circuit is connection status again at normal temperature, fault detect is not gone out, load onto and continue to use, temperature opens circuit again when reaching 250 ℃ of left and right sides, resistance wire 20 stops heating again, so again and again, still detect the failsafe place, bring very big difficulty to maintenance.
Summary of the invention
The present invention provides a kind of simple and reasonable for structure, thermal efficiency height, the inlaid plasticizing charging barrel heating arrangement of good tolerance in order to overcome the deficiency that above prior art exists.
Purpose of the present invention realizes by following technical scheme: this inlaid plasticizing charging barrel heating arrangement, comprise plasticizing charging barrel and heater, it is characterized in that: described heater is a fire-bar, the periphery of plasticizing charging barrel has helicla flute, fire-bar is embedded in the helicla flute, and the two ends of fire-bar are connected with power supply by binding post.
Described spiral fluted cross sectional shape is rectangle, semicircle, half elliptic or triangle, and the cross sectional shape of fire-bar is rectangle, semicircle, half elliptic or the triangle that cooperates with helicla flute.
Described fire-bar is the metal tube of interior dress resistance wire, and the space of resistance wire and metal pipe-wall is compressed with the heat conductive insulating layer.
Described heat conductive insulating layer is the crystal magnesium oxide layer.
It between described fire-bar and the helicla flute gapless tight fit.
Described spiral fluted cross sectional shape is a rectangle, and the cross sectional shape of fire-bar is the rectangle that cooperates with helicla flute, and three sides of fire-bar and three walls of spiral fluted do not have the gap and fit.
Described fire-bar is one section, two sections or multistage.
Described spiral fluted depth bounds is 3～20mm, and the spiral fluted width range is 3～20mm.
Described spiral fluted pitch scope is 15～100mm.
The periphery of described plasticizing charging barrel has screwed hole, and temperature sensor is installed in the screwed hole.
The present invention has following advantage with respect to prior art:
One, heat transfer area is big, and thermal efficiency height can make plasticizing charging barrel heat up rapidly, saves the energy.Fire-bar is embedded in the plasticizing charging barrel helicla flute, closely contacts with plasticizing charging barrel, and the four sides has three towards the plasticizing charging barrel heat transfer, and its operating temperature height can reach 550 ℃, and the heat 75% that energising produces heats up plasticizing charging barrel rapidly to be uploaded to plasticizing charging barrel.
Two, fire-bar long service life.Fire-bar adopts high-intensity resistance wire to be contained in the metal tube, the powerful crystal magnesium oxide that compresses, closely is filled with thermal conductive resin and insulating properties in the space of resistance wire and metal tube, two ends are connected with power supply by binding post, the resistance wire not oxidation of not making moist, and prolong its service life greatly.
Three, heating temp height.The heating work temperature reaches 550 ℃ of resistance wires and can not burn out.
Four, maintenance time is few, has improved production efficiency.Fire-bar is embedded in the plasticizing charging barrel helicla flute with tight fit, expands with heat and contract with cold with plasticizing charging barrel, does not change its tight fit structure, need not safeguard substantially.
Five, the design is simple in structure, is easy to process and assemble, process temper after fire-bar is made, but the coiled different shape is applied widely, is applicable to various injection machines, and market prospects are good.
Description of drawings
Fig. 1 is the structural representation of the plasticizing charging barrel heating arrangement of prior art.
Fig. 2 is the structural representation of the heater of Fig. 1.
Fig. 3 is the A-A cutaway view Amplified image of Fig. 2.
Fig. 4 is the structural representation of inlaid plasticizing charging barrel heating arrangement of the present invention.
Fig. 5 is the structural representation of the plasticizing charging barrel of Fig. 4.
Fig. 6 is the structural representation of the fire-bar of Fig. 4.
Fig. 7 is the left view of Fig. 6.
Fig. 8 is the partial enlarged drawing of Fig. 6.
Fig. 9 is the installation site schematic diagram of temperature sensor.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
Embodiment
As Fig. 4～a kind of inlaid plasticizing charging barrel heating arrangement shown in Figure 9, comprise plasticizing charging barrel 1 and heater, described heater is a fire-bar 3, the periphery of plasticizing charging barrel 1 has helicla flute 10 (see figure 5)s, present embodiment is that six sections fire-bars 3 are embedded in the helicla flute 10, and the two ends of every section fire-bar 3 are connected with power supply by binding post 4.Fire-bar 3 is the metal tube of interior dress resistance wire 30 (seeing Fig. 6, Fig. 8), resistance wire 30 is compressed with crystal magnesium oxide 32 with the space of metal pipe-wall 31, the resistance wire 30 not oxidation of not making moist, prolong its service life greatly, and the heating work temperature reaches 550 ℃ of resistance wires and can not burn out.The cross sectional shape of helicla flute 10 is a square, the degree of depth of helicla flute 10 is 8mm, width is 8mm, pitch is 35mm, the cross sectional shape of fire-bar 3 is the square that cooperates with helicla flute 10, thereby three walls of three sides of fire-bar 3 and helicla flute 10 do not have the gap and fit and conduct heat to plasticizing charging barrel 1, its operating temperature height, can reach 550 ℃, the heat 75% that energising produces heats up plasticizing charging barrel 1 rapidly to be uploaded to plasticizing charging barrel 1, heat transfer area is big, thermal efficiency height can make plasticizing charging barrel 1 heat up rapidly, saves the energy.Fire-bar 3 expands with heat and contract with cold with plasticizing charging barrel 1, does not change its tight fit structure, need not safeguard substantially, has improved production efficiency.
Periphery at plasticizing charging barrel 1 has screwed hole 11, as shown in Figure 9, in the screwed hole 11 temperature sensor is installed, and the temperature of plasticizing charging barrel 1 is remained in the range of set temperature.Plasticizing charging barrel 1 temperature is crossed when hanging down, and temperature sensor makes fire-bar 3 connect the power supplys heating, and plasticizing charging barrel 1 heats up; When plasticizing charging barrel 1 temperature reached design temperature, temperature sensor made fire-bar 3 outages stop heating.
Inlaid plasticizing charging barrel heating arrangement of the present invention is heated experiment on the U-PET360 bottle embryo injection machine that the applicant makes, injection-molded item, experimental result shows that this inlaid plasticizing charging barrel heating arrangement has above-mentioned various beneficial effects.This inlaid plasticizing charging barrel heating arrangement is applied widely, is applicable to various injection machines, is easy to process and assemble.
The above-mentioned specific embodiment is the preferred embodiments of the present invention; can not limit claim of the present invention; other any change or other equivalent substitute mode that does not deviate from technical scheme of the present invention and made is included within protection scope of the present invention.
Claims (10)
1. inlaid plasticizing charging barrel heating arrangement comprises plasticizing charging barrel and heater, it is characterized in that: described heater is a fire-bar, and the periphery of plasticizing charging barrel has helicla flute, and fire-bar is embedded in the helicla flute, and the two ends of fire-bar are connected with power supply by binding post.
2. inlaid plasticizing charging barrel heating arrangement according to claim 1, it is characterized in that: described spiral fluted cross sectional shape is rectangle, semicircle, half elliptic or triangle, and the cross sectional shape of fire-bar is rectangle, semicircle, half elliptic or the triangle that cooperates with helicla flute.
3. inlaid plasticizing charging barrel heating arrangement according to claim 1 is characterized in that: described fire-bar is the metal tube of interior dress resistance wire, and the space of resistance wire and metal pipe-wall is compressed with the heat conductive insulating layer.
4. inlaid plasticizing charging barrel heating arrangement according to claim 3 is characterized in that: described heat conductive insulating layer is the crystal magnesium oxide layer.
5. inlaid plasticizing charging barrel heating arrangement according to claim 2 is characterized in that: be gapless tight fit between described fire-bar and the helicla flute.
6. inlaid plasticizing charging barrel heating arrangement according to claim 5, it is characterized in that: described spiral fluted cross sectional shape is a rectangle, the cross sectional shape of fire-bar is the rectangle that cooperates with helicla flute, and three sides of fire-bar and three walls of spiral fluted do not have the gap and fit.
7. inlaid plasticizing charging barrel heating arrangement according to claim 1 is characterized in that: described fire-bar is one section, two sections or multistage.
8. inlaid plasticizing charging barrel heating arrangement according to claim 1 is characterized in that: described spiral fluted depth bounds is 3～20mm, and the spiral fluted width range is 3～20mm.
9. inlaid plasticizing charging barrel heating arrangement according to claim 1 is characterized in that: described spiral fluted pitch scope is 15～100mm.
10. inlaid plasticizing charging barrel heating arrangement according to claim 1 is characterized in that: the periphery of described plasticizing charging barrel has screwed hole, and temperature sensor is installed in the screwed hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100325751A CN101181817A (en) | 2007-12-14 | 2007-12-14 | Inlaid plasticizing charging barrel heating arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100325751A CN101181817A (en) | 2007-12-14 | 2007-12-14 | Inlaid plasticizing charging barrel heating arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101181817A true CN101181817A (en) | 2008-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100325751A Pending CN101181817A (en) | 2007-12-14 | 2007-12-14 | Inlaid plasticizing charging barrel heating arrangement |
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| Country | Link |
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| CN (1) | CN101181817A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989812A (en) * | 2012-10-30 | 2013-03-27 | 无锡鸿声铝业有限公司 | Attemperator for heat preservation of high-temperature metal extruding sectional material |
| CN104816442A (en) * | 2015-04-23 | 2015-08-05 | 苏州乔布注塑工业有限公司 | Plasticizing cylinder for injection |
| CN108513371A (en) * | 2018-02-13 | 2018-09-07 | 耀能（上海）节能科技股份有限公司 | A kind of heating device |
-
2007
- 2007-12-14 CN CNA2007100325751A patent/CN101181817A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102989812A (en) * | 2012-10-30 | 2013-03-27 | 无锡鸿声铝业有限公司 | Attemperator for heat preservation of high-temperature metal extruding sectional material |
| CN104816442A (en) * | 2015-04-23 | 2015-08-05 | 苏州乔布注塑工业有限公司 | Plasticizing cylinder for injection |
| CN108513371A (en) * | 2018-02-13 | 2018-09-07 | 耀能（上海）节能科技股份有限公司 | A kind of heating device |
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Open date: 20080521 |