CN2666650Y - Pin cooling structure for pin extruder - Google Patents
Pin cooling structure for pin extruder Download PDFInfo
- Publication number
- CN2666650Y CN2666650Y CNU2003201315699U CN200320131569U CN2666650Y CN 2666650 Y CN2666650 Y CN 2666650Y CN U2003201315699 U CNU2003201315699 U CN U2003201315699U CN 200320131569 U CN200320131569 U CN 200320131569U CN 2666650 Y CN2666650 Y CN 2666650Y
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- CN
- China
- Prior art keywords
- pin
- cooling structure
- cooling
- machine barrel
- outer end
- 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.)
- Expired - Fee Related
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Classifications
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- 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
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/68—Barrels or cylinders
- B29C48/685—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads
- B29C48/687—Barrels or cylinders characterised by their inner surfaces, e.g. having grooves, projections or threads having projections with a short length in the barrel direction, e.g. pins
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a pin-barrel cooling structure of a pin-barrel extruder and comprises a plurality of pins which are arranged along the radial direction of an extrusion cylinder, and all the pins are provided with hollow cavities which are internally provided with cooling media. As the utility model adopts the pin-barrel structure, when plasticizing materials are processed, the cooling media can bring off the heat produced by the friction of pin roots and materials timely and solves the problem that the pins have too high temperature completely, thus, when rubber materials are processed, rubber materials are not vulcanized early in the extrusion cylinder at all, further, no bubbles are produced in extrusion products, which can ensure excellent extrusion quality and increase the product output.
Description
Technical field
The utility model relates to the pin extruder, refers in particular to the cooling structure of pin extruder.
Background technology
The pin extruder, its pin passes barrel wall and inserts in the screw slot, is provided with basic a plurality of circulations cooling duct of extending along screw axial on barrel wall.When screw rod rotated plastifying material, material flowed between screw slot and machine tube inner wall, and pin is in the middle of the material besieged, and wherein pin and machine tube inner wall play and hinder material and rotate with screw rod, and then play the effect that plasticizing mixes and strengthen output by pin.But in plasticizing process, machine barrel and pin all can be owing to the material friction produce big calorimetric, and temperature is very high.For the machine barrel heat, because it is provided with recirculated cooling water, so the heat that produces of the machine barrel water that can be cooled is substantially taken away; But for pin, owing to insert in the material also besieged, so can not in time passing on the barrel wall and by the cooling water of machine barrel, the heat that pin produces takes away, the pin heat radiation is bad, and temperature is too high, therefore, during for the processing rubber material, sizing material is just cured in machine barrel in early days, even make generation bubble in the extruded product, have a strong impact on quality of item.Therefore, for avoiding the pin temperature too high, it is too fast that screw rod can not be rotated, and so just can reduce the heat that produces in the middle of plasticizing process, but meanwhile, the output of extruder is a greater impact.At present, some people in the industry too high problem of pin temperature when extruding also, reduced the pin quantity on the machine barrel, though this structure has reduced the heat that pin is produced in the processing materials process, the adverse consequences that it brought is exactly that material plasticizing and mixed effect obviously descend, output obviously reduces.Based on above explanation, also there is not at present a kind of pin temperature that can effectively solve too high and produce the problem of negative effect.
Summary of the invention
Technical problem to be solved in the utility model, the pin that is exactly the pin extruder produces big calorimetric and makes the too high problem of its temperature in the processing plasticizing process.
The pin cooling structure of a kind of pin extruder that the utility model provides includes several pins that radially are provided with along machine barrel, it is characterized in that, described each pin has hollow chamber, and in the indoor cooling medium that is provided with of hollow cavity.
Described pin is provided with cooling medium inlet and outlet in the outer end that is in the machine barrel outside.
Described import is positioned on the end face of pin outer end, in this import department the ingress pipe that extends to the pin root is set, and outlet is positioned on the sidewall of pin outer end.
Described pin is provided with a screw being on the outer end end face of machine barrel outside, by this screw the bilayer sleeve joint is set, and the interior pipe of this bilayer sleeve joint inserts hollow chamber and extends to the pin root from screw, and the outer tube spiral shell is located in this screw.
Described pin is provided with a through hole being on the outer end end face of machine barrel outside, and external screw thread is set at the pin outer peripheral face, by this external screw thread the bilayer sleeve joint is set, the interior pipe of bilayer sleeve joint inserts hollow chamber and extends to the pin root from through hole, and outer tube then spiral shell is located on the external screw thread of pin.
The hollow chamber of described pin is an enclosed construction, and described cooling medium is phase-change material or dry ice.
Described pin is provided with removable seal lid being on the outer end end face of machine barrel outside.
Described hollow chamber further forms the reinforcement cooling chamber that internal diameter dwindles to the pin root.
According to technique scheme, the utility model is by being provided with cooling medium in having the pin of hollow chamber, and cooling medium can effectively cool off pin root and outer end.Therefore, when plastifying material, the heat that cooling medium can be in time produces during pin and material friction is taken away, can thoroughly solve the too high problem of pin temperature, simultaneously since the heat of pin in time taken away, thereby can reach the fabulous effect of extruding, and output is increased.
Description of drawings
Fig. 1 is the structure cutaway view of the utility model embodiment 1.
Fig. 2 is the structure cutaway view of the utility model embodiment 2.
Fig. 3 is the structure cutaway view of the utility model embodiment 3.
The specific embodiment
Referring to Fig. 1, the pin cooling structure of a kind of pin extruder that the utility model provides, include several pins 2 that radially are provided with along machine barrel 1, machine barrel 1 is provided with cooling duct 11, cool off machine barrel 1 for logical low-temperature cooling water, each pin 2 has hollow chamber 21, and hollow chamber 21 further forms the reinforcement cooling chamber 26 that internal diameter dwindles to the pin root.The logical cooling medium 22 (only in pin out of the ordinary, having drawn cooling medium) that is provided with in hollow chamber 21, in this embodiment, cooling medium 22 is water or oil, other medium with bigger absorption latent heat also can adopt certainly, does not limit in the utility model.Pin 2 is provided with cooling medium inlet 23 and exports 24 in the outer end that is in machine barrel 1 outside, and import 23 is positioned on the end face 20 of pin 2 outer ends, and the ingress pipe 25 that extends to pin 2 roots is set in these import 20 places, is positioned on the sidewall 200 of pin 2 outer ends and export 24.
When extruder is worked, low-temperature cooling water is entered by ingress pipe 25, and the root of through pin 2, rapidly the heat of pin 2 roots is taken away, through the heat absorption high-temperature cooling water via the annular space between ingress pipe 25 outer walls and hollow chamber 21 inwalls, and from export 24 outflows.Certainly, cooling medium can be entered by outlet 24 fully, and flows out from import 23.
Because pin cooling structure of the present utility model, when plastifying material, the heat that cooling medium 22 can be in time produces during pin root and material friction is taken away, and can thoroughly solve the too high problem of pin temperature, because the temperature of pin 2 is effectively reduced, thereby, when the processing rubber material, sizing material is just cured in machine barrel in early days, more can in extruded product, not produce bubble, can guarantee the splendid quality of extruding, and output is increased.
Embodiment 2
Referring to Fig. 2, principle, basic structure and the effect of this embodiment and embodiment 1 are identical, no longer repeat.Difference is the loop structure of pin cooling medium.In this embodiment, described pin 2 is provided with a screw 27 on the outer end end face 20 that is in machine barrel 1 outside, by this screw 27 bilayer sleeve joint 28 is set, the interior pipe 281 of this bilayer sleeve joint 28 extends from the screw 27 hollow chambers 21 of insertion and to pin 2 roots, and outer tube 282 spiral shells are located in this screw 27.
Perhaps, described pin 2 also can be provided with a through hole on the outer end end face 20 that is in machine barrel 1 outside, and external screw thread is set at pin 2 outer peripheral faces, by this external screw thread bilayer sleeve joint 28 is set, the interior pipe 281 of bilayer sleeve joint 28 inserts hollow chamber 21 and extends to pin 2 roots from this through hole, outer tube 282 then spiral shell is located on the external screw thread of pin, no longer provides respective drawings at this.
When extruder was worked, the cooling medium 22 of low temperature was injected by the interior pipe 281 of bilayer sleeve joint 28, absorbed heat and flowed out from the outer ring cavity of bilayer sleeve joint 28 later on, can cool off pin 2 effectively equally.Certainly, also can enter from outer ring cavity, and flow out from interior pipe 281, low-temperature cooling water directly cools off pin 2 hollow chamber 21 inwalls like this, and cooling effect is more direct, rapid.
Embodiment 3
Referring to Fig. 3, principle, basic structure and the effect of this embodiment and embodiment 1 or 2 are identical, no longer repeat.Difference is that cooling medium changes, and economization cooling medium import and export according to this.In this embodiment, the hollow chamber 21 of pin 2 is enclosed construction, and described cooling medium 22 is phase-change material (as paraffin wax) or dry ice.For ease of inserting and additional cooling medium 22, can on being in the outer end end face 20 of barrel wall 1 outside, pin 2 be provided with removable seal lid 29.
Phase-change material can absorb a large amount of heats when undergoing phase transition, thereby can cool off pin 2.When extruder was worked, machine tube inner wall and pin 2 can produce a large amount of heats, and when reaching the transformation temperature of phase-change material, phase-change material will undergo phase transition, and absorbs heat rapidly, thereby, also the heat of pin 2 can be taken away.But since phase-change material finally to understand phase transformation complete, phase-change material finally can reach and extraneous identical temperature, and therefore, two embodiment are more not lasting, effective as described above for the effect of absorption heat, therefore, this embodiment is suitable for processing the situation that viscosity is less or the production time is not very long.
To sum up, pin cooling structure provided by the utility model as long as pin is hollow shape, and logically in it is established cooling medium, just should belong to protection domain of the present utility model fully.As for feeding which kind of cooling medium and how feeding cooling medium, the utility model does not limit.And, this pin cooling structure can be applied to anyly have on the machine or equipment that needs the cooling pin, even can be applied to the pin on the screw pin, like this, the logical cooling water of establishing will feed in the hollow pin in the lump and cool off in the screw rod cooling tube, and effect is splendid.
Claims (8)
1. the pin cooling structure of a pin extruder includes several pins that radially are provided with along machine barrel, it is characterized in that, described each pin has hollow chamber, and in the indoor cooling medium that is provided with of hollow cavity.
2. the pin cooling structure of pin extruder according to claim 1 is characterized in that described pin is provided with cooling medium inlet and outlet in the outer end that is in the machine barrel outside.
3. the pin cooling structure of pin extruder according to claim 2 is characterized in that, described import is positioned on the end face of pin outer end, in this import department the ingress pipe that extends to the pin root is set, and outlet is positioned on the sidewall of pin outer end.
4. the pin cooling structure of pin extruder according to claim 1, it is characterized in that, described pin is provided with a screw being on the outer end end face of machine barrel outside, by this screw the bilayer sleeve joint is set, the interior pipe of this bilayer sleeve joint inserts hollow chamber and extends to the pin root from screw, and the outer tube spiral shell is located in this screw.
5. the pin cooling structure of pin extruder according to claim 1, it is characterized in that, described pin is provided with a through hole being on the outer end end face of machine barrel outside, and external screw thread is set at the pin outer peripheral face, by this external screw thread the bilayer sleeve joint is set, the interior pipe of bilayer sleeve joint inserts hollow chamber and extends to the pin root from through hole, and outer tube then spiral shell is located on the external screw thread of pin.
6. the pin cooling structure of pin extruder according to claim 1 is characterized in that, the hollow chamber of described pin is an enclosed construction, and described cooling medium is phase-change material or dry ice.
7. the pin cooling structure of pin extruder according to claim 6 is characterized in that, described pin is provided with removable seal lid being on the outer end end face of machine barrel outside.
8. according to the pin cooling structure of any one described pin extruder in the claim 1～7, it is characterized in that described hollow chamber further forms the reinforcement cooling chamber that internal diameter dwindles to the pin root.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201315699U CN2666650Y (en) | 2003-12-26 | 2003-12-26 | Pin cooling structure for pin extruder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201315699U CN2666650Y (en) | 2003-12-26 | 2003-12-26 | Pin cooling structure for pin extruder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2666650Y true CN2666650Y (en) | 2004-12-29 |
Family
ID=34350234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201315699U Expired - Fee Related CN2666650Y (en) | 2003-12-26 | 2003-12-26 | Pin cooling structure for pin extruder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2666650Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103097108A (en) * | 2010-07-23 | 2013-05-08 | 朗盛德国有限责任公司 | Extruder with integrated die plate and method for degasing polymer mixtures |
| CN113878844A (en) * | 2021-09-28 | 2022-01-04 | 北京工商大学 | Performance optimization's incongruous double screw extruder |
-
2003
- 2003-12-26 CN CNU2003201315699U patent/CN2666650Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103097108A (en) * | 2010-07-23 | 2013-05-08 | 朗盛德国有限责任公司 | Extruder with integrated die plate and method for degasing polymer mixtures |
| CN103097108B (en) * | 2010-07-23 | 2016-05-25 | 朗盛德国有限责任公司 | There is the extruder of integrated pressuring template and for polyblend being carried out to the method for degasification |
| CN113878844A (en) * | 2021-09-28 | 2022-01-04 | 北京工商大学 | Performance optimization's incongruous double screw extruder |
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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: 20041229 Termination date: 20100126 |