CA1282215C - Pin-barrel extruder having adjustable pins - Google Patents
Pin-barrel extruder having adjustable pinsInfo
- Publication number
- CA1282215C CA1282215C CA000501151A CA501151A CA1282215C CA 1282215 C CA1282215 C CA 1282215C CA 000501151 A CA000501151 A CA 000501151A CA 501151 A CA501151 A CA 501151A CA 1282215 C CA1282215 C CA 1282215C
- Authority
- CA
- Canada
- Prior art keywords
- barrel
- pin
- piston rod
- extruder
- pins
- 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 - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/22—Extrusion presses; Dies therefor
- B30B11/24—Extrusion presses; Dies therefor using screws or worms
- B30B11/248—Means preventing the material from turning with the screw or returning towards the feed hopper
-
- 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
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
-
- 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
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
Abstract
ABSTRACT
A pin-barrel extruder used for processing rubber or thermoplastics materials of for the removing of water from liquid/solid mixtures has pin adjusting means. The adjustment means comprises a plurality of hydraulic piston and cylinder arrangements, the cylinders being mounted on the external surface of the barrel and each pin forms a part of the piston rod of each arrangement. Each pin may be integrally formed with, or detachably affixable to the piston rod with which it is associated. By so doing, the pins are insertable into and retractable from the interior of the barrel in a simple manner. If desired, check valves may be provided so as to make it possible to displace the piston rods individually,in groups or all simultaneously, thereby permit-ting the pins to be moved into or out of the extrusion barrel interior extremely quickly.
A pin-barrel extruder used for processing rubber or thermoplastics materials of for the removing of water from liquid/solid mixtures has pin adjusting means. The adjustment means comprises a plurality of hydraulic piston and cylinder arrangements, the cylinders being mounted on the external surface of the barrel and each pin forms a part of the piston rod of each arrangement. Each pin may be integrally formed with, or detachably affixable to the piston rod with which it is associated. By so doing, the pins are insertable into and retractable from the interior of the barrel in a simple manner. If desired, check valves may be provided so as to make it possible to displace the piston rods individually,in groups or all simultaneously, thereby permit-ting the pins to be moved into or out of the extrusion barrel interior extremely quickly.
Description
~8221S
TITLE OF TH~ INVENTION
"Pin-barrel extruder having adjustable pins"
5 FIELD O~ THE INVENTION
The present invention relates to a pin-barrel extruder.
More particularly, it relates to an extruder in which the pins are adjustable.
BAC~GRûUND OF THE INVENTION AND PRIOR M T DISCUSSION
Pin-barrel extruders are known and comprise a screw conveyor which is rotatable in the hollow interior of a barrel. Disposed 15 along the length of the barrel and projecting radially into the hollow interior of the barrel are a plurality of pins. These pins project to adjacent the core of the screw, the flight or flights on the screw being discontinuous in the region of the pins.
It is desirable if the depth of penetration of the pins into the barrel is adjustable. Such an arrangement is disclosed in United States Patent Specification No. 4,178,104. In such arrangement the pins are screw-fitted in holding members and are non-rotatably connected thereto by means of lock nuts. The 25 holding fixtures are radially displaceable in guide members mounted on the extruder cylinder. A gear member is used for adjustment purposes. One face of the gear faces the holding fixture and is provided with a cam track. The track engages corresponding complementary cam-followers on the holding fixtures. The gear 30 member is driven by a pinion, is freely rotatable and is prevented from axial movement by a collar ring.
However, such an arrangement suffers from numerous dis-advantages. In setting up such an arrangement, the gear member 35 must firstly be positioned over the extruder barrel. In its end position, it thèn has to be mounted on a sleeve-like guide means ~q~
~X82215 which, in turn, has to be screw-connected to the extruder barrel.
Finally, complementary cams and cam tracks have to be provided laterally on the gear member and in the holding fixtures. This is time-consuming and costly.
In addition, an extremely elaborate construction is also required, for the mounting of the drive pinion which engages with the gear on the extruder cylinder. This adds to the costs associated with the production of an extruder having such an adjustment arrangement.
It is also difficult to assemble the adjusting means. Before a barrel flange connecting member, which is usually provided to permit barrel portions to be connected together, is welded to one end of a barrel portion, it is necessary for the sleeve-like guide member to be slid onto the barrel so as to receive the bearings for the gear. The gear is then positioned over the cylinder and brought into its intended position. Only after this has been done can the guide member be screw-connected to the extruder barrel.
The holding fixture, which is provided with the lateral cam follow-ers, is then slid onto the extruder barrel into its intended position. The individual pins are $crewed radially inwardly through the holding fixture. Only when the assembly of all of these integers has been completed, can the barrel flange be welded to the end of the barrel portion.
After a period of time, it is likely that the cam followers on the holding fixture and the cam track on the gear member will exhibit signs of wear. To replace them, the above-described procedure must be reversed. So much work is involved that it is simpler to replace the entire barrel portion. Moreover, it is also necessary to extract the screw from the extruder, and to remove the barrel flange connection. These measures which need to be taken mean that the extruder is inoperative for long, and therefore costly, periods of time.
lZ8221~
OBJECTS OF THE PRESENT INVENTION
It is an object of the present invention to provide a pin-barrel extruder in which the pins are adjustable but in which adjusting means are of a very simple construction and require little assembly and dismantling.
In particular, it is an object of the present invention to avoid the necessity for extracting the screw of the extruder and for disconnecting, by removing the weld, the flanges of individual barrel portions when it is desired to change or replace the means for adjusting the pins.
SUMMARY OF THE INVENTION
lS According to the present invention, there is provided a pin-barrel extruder suitable for processing rubber, thermoplastics materials and the like, comprising hollow cylindrical barrel means, said barrel means com-prising a radial inner surface and a radial outer surface, screw means rotatable in said hollow cylindrical barrel means, said screw means comprising a core portion and at least one flight portion helically disposed around said core portion, said at least one flight portion being discontinuous, said barrel means defining radially dlrected throughbores extending from said radial outer surface to said radial inner surface, said throughbores being distributed around the periphery of said barrel at substan-tially uniform intervals, pin means disposed in said throughbores, said pin means being directed radially inwardly towards the longitudinal axis of said core of said screw means and projecting into said hollow cylindrical barrel means to adjacent said core through said disconti-nuous portions of said at least one flight, and adjusting means for adjusting the depth of penetration of said pin .~ ... . .
~'~2~5 - 3a -means into said hollow cylindrical barrel means, wherein said adjusting means comprise hydraulic piston-and-cylinder arrangements, each said arrangement comprising a cylinder mounted on said radial outer surface of said barrel portion and piston rod means slidable within each said cylinder, each said pin means forming an end part of a selected piston rod means.
/
, ~ , :
~28Z215 By making the pins form part of the piston rods, an extremely simple and effective arrangement is achieved for adjusting the pins. The depth of penetration of the pins into the hollow interior of the barrel may be varied simply by moving the respective piston rods in the individual hydraulic cylinders either radially inwardly or radially outwardly.
The piston rods in the hydraulic piston and cylinder arrange-ments mounted on the extruder barrel may be moved simultaneously or merely all of the pins in a particular radial plane or in a particular extruder barrel portion may be moved simultaneously, or even individual piston rods may be moved. This permits a highly individual adaptation to the specific temperature requirements or viscosities of the materials being treated can be achieved within the barrel portions.
Moreover, even if the screw needs to be extracted for cleaning or any other purpose, the pins can be extracted from the extrusion chamber extremely quickly, so that the screw can be extracted easily.
Preferably, each said piston rod means comprises a piston rod and a pin member detachably affixed to said piston rod.
Alternatively, each said piston rod means comprises a piston rod and a pin member integrally formed with said piston rod.
Advantageously, each said piston rod means comprises a further end part remote from said pin means, said further end part projecting from said cylinder in a direction opposite said pin means, said projecting further end part carrying indicia means.
BRIEF DESCRIPTION OF THE DRAWINGS
-35 - One embodiment of a pin-barrel extruder in accordance with the present invention will be further described, by way of example, with reference to the accompanying drawings, in which:
B;2;2~
Fig 1 is a longitudinal sectional view through a portion of a pin barrel extruder in accordance with the present invention;
and Fig. 2 is a cross-sectional view taken along the line II-II
5 of Fig. 1.
DESCRIPTION OF PREFERRED EMBODIMENTS
In Fig. 1, there is shown a pin-barrel extruder in which, in a conventional manner, a screw 2 rotates in an extruder barrel portion 1. Material to be extruded such as rubber or thermo-plastics materials are fed into the barrel 1 and are conveyed therealong by means of one or more helically extending flights 3 provided around the periphery of the screw 2. Pin members 4 15 provided along the length of the barrel portion 1 and project radially inwardly into the interior 5 of the barrel portion 1.
The flights 3 are discontinuous in the regions where the pins 4 project into the interior 5 of the barrel portion 1.
To permit adjustment of the pins 4, hydraulic piston and cylinder arrangements 6 are moùnted on the exterior surface of the barrel portion 1. These arrangements are so designed that each pin is integrally formed with, or is affixable to, a respective one of the piston rods of the piston and cylinder arrangements.
The hydraulic piston and cylinder arrangements 6 are controlled by means of one or more check valves (not shown). Depending upon the intended purpose of the apparatus, the piston and cylinder arrangements may be controlled in groups or all together.
By simply operating such a check valve or valves, it is therefore possible to move the pins 4 into and out of the interior 5 of the barrel portion in a matter of seconds. Accordingly, the apparatus can rapidly be adapted to cope with the viscosity and/or 35 temperature sensitivity of almost any material requiring extrusion.
22lS
The piston rods of the hydraulic cylinders may be continuous so that one end thereof forms one of the homogenising pins 4 and the other ends, which projects from the hydraulic cylinder, can also serve as a visible control means if it is provided ~ith appropriate markings because it denotes the depth of penetration of the pin end 4 into the interior 5 of the barrel portion 1.
Alternatively, the pins 4 may be separate integers which are screw-threadedly affixed into the piston rods of the hydraulic cylinders. Accordingly, if wear phenomena appear on the pins 4, it is possible to replace the pins 4 in an economic and rapid manner.
TITLE OF TH~ INVENTION
"Pin-barrel extruder having adjustable pins"
5 FIELD O~ THE INVENTION
The present invention relates to a pin-barrel extruder.
More particularly, it relates to an extruder in which the pins are adjustable.
BAC~GRûUND OF THE INVENTION AND PRIOR M T DISCUSSION
Pin-barrel extruders are known and comprise a screw conveyor which is rotatable in the hollow interior of a barrel. Disposed 15 along the length of the barrel and projecting radially into the hollow interior of the barrel are a plurality of pins. These pins project to adjacent the core of the screw, the flight or flights on the screw being discontinuous in the region of the pins.
It is desirable if the depth of penetration of the pins into the barrel is adjustable. Such an arrangement is disclosed in United States Patent Specification No. 4,178,104. In such arrangement the pins are screw-fitted in holding members and are non-rotatably connected thereto by means of lock nuts. The 25 holding fixtures are radially displaceable in guide members mounted on the extruder cylinder. A gear member is used for adjustment purposes. One face of the gear faces the holding fixture and is provided with a cam track. The track engages corresponding complementary cam-followers on the holding fixtures. The gear 30 member is driven by a pinion, is freely rotatable and is prevented from axial movement by a collar ring.
However, such an arrangement suffers from numerous dis-advantages. In setting up such an arrangement, the gear member 35 must firstly be positioned over the extruder barrel. In its end position, it thèn has to be mounted on a sleeve-like guide means ~q~
~X82215 which, in turn, has to be screw-connected to the extruder barrel.
Finally, complementary cams and cam tracks have to be provided laterally on the gear member and in the holding fixtures. This is time-consuming and costly.
In addition, an extremely elaborate construction is also required, for the mounting of the drive pinion which engages with the gear on the extruder cylinder. This adds to the costs associated with the production of an extruder having such an adjustment arrangement.
It is also difficult to assemble the adjusting means. Before a barrel flange connecting member, which is usually provided to permit barrel portions to be connected together, is welded to one end of a barrel portion, it is necessary for the sleeve-like guide member to be slid onto the barrel so as to receive the bearings for the gear. The gear is then positioned over the cylinder and brought into its intended position. Only after this has been done can the guide member be screw-connected to the extruder barrel.
The holding fixture, which is provided with the lateral cam follow-ers, is then slid onto the extruder barrel into its intended position. The individual pins are $crewed radially inwardly through the holding fixture. Only when the assembly of all of these integers has been completed, can the barrel flange be welded to the end of the barrel portion.
After a period of time, it is likely that the cam followers on the holding fixture and the cam track on the gear member will exhibit signs of wear. To replace them, the above-described procedure must be reversed. So much work is involved that it is simpler to replace the entire barrel portion. Moreover, it is also necessary to extract the screw from the extruder, and to remove the barrel flange connection. These measures which need to be taken mean that the extruder is inoperative for long, and therefore costly, periods of time.
lZ8221~
OBJECTS OF THE PRESENT INVENTION
It is an object of the present invention to provide a pin-barrel extruder in which the pins are adjustable but in which adjusting means are of a very simple construction and require little assembly and dismantling.
In particular, it is an object of the present invention to avoid the necessity for extracting the screw of the extruder and for disconnecting, by removing the weld, the flanges of individual barrel portions when it is desired to change or replace the means for adjusting the pins.
SUMMARY OF THE INVENTION
lS According to the present invention, there is provided a pin-barrel extruder suitable for processing rubber, thermoplastics materials and the like, comprising hollow cylindrical barrel means, said barrel means com-prising a radial inner surface and a radial outer surface, screw means rotatable in said hollow cylindrical barrel means, said screw means comprising a core portion and at least one flight portion helically disposed around said core portion, said at least one flight portion being discontinuous, said barrel means defining radially dlrected throughbores extending from said radial outer surface to said radial inner surface, said throughbores being distributed around the periphery of said barrel at substan-tially uniform intervals, pin means disposed in said throughbores, said pin means being directed radially inwardly towards the longitudinal axis of said core of said screw means and projecting into said hollow cylindrical barrel means to adjacent said core through said disconti-nuous portions of said at least one flight, and adjusting means for adjusting the depth of penetration of said pin .~ ... . .
~'~2~5 - 3a -means into said hollow cylindrical barrel means, wherein said adjusting means comprise hydraulic piston-and-cylinder arrangements, each said arrangement comprising a cylinder mounted on said radial outer surface of said barrel portion and piston rod means slidable within each said cylinder, each said pin means forming an end part of a selected piston rod means.
/
, ~ , :
~28Z215 By making the pins form part of the piston rods, an extremely simple and effective arrangement is achieved for adjusting the pins. The depth of penetration of the pins into the hollow interior of the barrel may be varied simply by moving the respective piston rods in the individual hydraulic cylinders either radially inwardly or radially outwardly.
The piston rods in the hydraulic piston and cylinder arrange-ments mounted on the extruder barrel may be moved simultaneously or merely all of the pins in a particular radial plane or in a particular extruder barrel portion may be moved simultaneously, or even individual piston rods may be moved. This permits a highly individual adaptation to the specific temperature requirements or viscosities of the materials being treated can be achieved within the barrel portions.
Moreover, even if the screw needs to be extracted for cleaning or any other purpose, the pins can be extracted from the extrusion chamber extremely quickly, so that the screw can be extracted easily.
Preferably, each said piston rod means comprises a piston rod and a pin member detachably affixed to said piston rod.
Alternatively, each said piston rod means comprises a piston rod and a pin member integrally formed with said piston rod.
Advantageously, each said piston rod means comprises a further end part remote from said pin means, said further end part projecting from said cylinder in a direction opposite said pin means, said projecting further end part carrying indicia means.
BRIEF DESCRIPTION OF THE DRAWINGS
-35 - One embodiment of a pin-barrel extruder in accordance with the present invention will be further described, by way of example, with reference to the accompanying drawings, in which:
B;2;2~
Fig 1 is a longitudinal sectional view through a portion of a pin barrel extruder in accordance with the present invention;
and Fig. 2 is a cross-sectional view taken along the line II-II
5 of Fig. 1.
DESCRIPTION OF PREFERRED EMBODIMENTS
In Fig. 1, there is shown a pin-barrel extruder in which, in a conventional manner, a screw 2 rotates in an extruder barrel portion 1. Material to be extruded such as rubber or thermo-plastics materials are fed into the barrel 1 and are conveyed therealong by means of one or more helically extending flights 3 provided around the periphery of the screw 2. Pin members 4 15 provided along the length of the barrel portion 1 and project radially inwardly into the interior 5 of the barrel portion 1.
The flights 3 are discontinuous in the regions where the pins 4 project into the interior 5 of the barrel portion 1.
To permit adjustment of the pins 4, hydraulic piston and cylinder arrangements 6 are moùnted on the exterior surface of the barrel portion 1. These arrangements are so designed that each pin is integrally formed with, or is affixable to, a respective one of the piston rods of the piston and cylinder arrangements.
The hydraulic piston and cylinder arrangements 6 are controlled by means of one or more check valves (not shown). Depending upon the intended purpose of the apparatus, the piston and cylinder arrangements may be controlled in groups or all together.
By simply operating such a check valve or valves, it is therefore possible to move the pins 4 into and out of the interior 5 of the barrel portion in a matter of seconds. Accordingly, the apparatus can rapidly be adapted to cope with the viscosity and/or 35 temperature sensitivity of almost any material requiring extrusion.
22lS
The piston rods of the hydraulic cylinders may be continuous so that one end thereof forms one of the homogenising pins 4 and the other ends, which projects from the hydraulic cylinder, can also serve as a visible control means if it is provided ~ith appropriate markings because it denotes the depth of penetration of the pin end 4 into the interior 5 of the barrel portion 1.
Alternatively, the pins 4 may be separate integers which are screw-threadedly affixed into the piston rods of the hydraulic cylinders. Accordingly, if wear phenomena appear on the pins 4, it is possible to replace the pins 4 in an economic and rapid manner.
Claims (4)
1. A pin-barrel extruder suitable for processing rubber or thermoplastics materials, comprising hollow cylindrical barrel means, said barrel means comprising a radial inner surface and a radial outer surface, screw means rotatable in said hollow cylindrical barrel means, said screw means comprising a core portion and at least one flight portion helically disposed around said core portion, said at least one flight portion being discontinuous, said barrel means defining radially directed throughbores extending from said radial outer surface to said radial inner surface, said throughbores being distributed around the periphery of said barrel at substantially uniform intervals, pin means disposed in said throughbores, said pin means being directed radially inwardly towards the longitudinal axis of said core of said screw means and projecting into said hollow cylindrical barrel means to adjacent said core through said discontinuous portions of said at least one flight, and adjusting means for adjusting the depth of penetration of said pin means into said hollow cylindrical barrel means, wherein said adjusting means comprise hydraulic piston-and-cylinder arrangements, each said arrangement comprising a cylinder mounted on said radial outer surface of said barrel portion and piston rod means slidable within each said cylinder, each said pin means forming an end part of a selected piston rod means.
2. A pin-barrel extruder as recited in claim 1, wherein each said piston rod means comprises a piston rod and a pin member detachably affixed to said piston rod.
3. A pin-barrel extruder as recited in claim 1, wherein each said piston rod means comprises a piston rod and a pin member integrally formed with said piston rod.
4. A pin-barrel extruder as recited in claim 1, wherein each said piston rod means comprises a further end part remote from said pin means, said further end part projecting from said cylinder in a direction opposite said pin means, said projecting further end part carrying indicia means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3503911A DE3503911C1 (en) | 1985-02-06 | 1985-02-06 | Pen adjustment device on a pen extruder for the processing of rubber or thermoplastic materials |
| DEP3503911.6 | 1985-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1282215C true CA1282215C (en) | 1991-04-02 |
Family
ID=6261736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000501151A Expired - Lifetime CA1282215C (en) | 1985-02-06 | 1986-02-05 | Pin-barrel extruder having adjustable pins |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPH0655410B2 (en) |
| CN (1) | CN1003436B (en) |
| AT (1) | AT389672B (en) |
| CA (1) | CA1282215C (en) |
| DE (1) | DE3503911C1 (en) |
| FR (1) | FR2576833B1 (en) |
| GB (1) | GB2171636B (en) |
| IT (1) | IT1204763B (en) |
| SE (1) | SE8600500L (en) |
| SU (1) | SU1393312A3 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0305692B1 (en) * | 1987-09-02 | 1992-05-06 | HERMANN BERSTORFF Maschinenbau GmbH | Process for the continuous production of rubber mixtures and other filler-containing polymer-based mixtures |
| FR2648261B1 (en) * | 1989-06-07 | 1992-04-17 | Mecanique Moderne | MONOVIS CONTINUOUS PRESS WITH ADAPTABLE COMPRESSION RATE |
| DE4010540C1 (en) * | 1990-04-02 | 1991-11-07 | Wilfried Dipl.-Ing. 3017 Pattensen De Baumgarten | |
| DE4012612A1 (en) * | 1990-04-20 | 1991-10-24 | Wilfried Baumgarten | SNAIL EXTRUDERS |
| DE4208284C1 (en) * | 1992-03-13 | 1993-02-11 | Paul Troester Maschinenfabrik, 3000 Hannover, De | |
| DE4244312C1 (en) * | 1992-12-28 | 1994-01-20 | Baumgarten Wilfried | Screw extruder |
| CN109732804B (en) * | 2019-01-25 | 2020-05-08 | 维希艾环保新材料(上海)股份有限公司 | High-dispersity extrusion equipment for producing environment-friendly antirust master batches |
| DE102020214857A1 (en) | 2020-11-26 | 2022-06-02 | Continental Reifen Deutschland Gmbh | Apparatus for extruding a rubber compound having a Mooney viscosity greater than 50 MU and using the apparatus to extrude a first rubber compound into a second rubber compound and to extrude a third rubber compound into a fourth rubber compound |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2124466B2 (en) * | 1971-05-17 | 1978-09-28 | Fried. Krupp Gmbh, 4300 Essen | Extruder for processing plastics and elastomers |
| US4178104A (en) * | 1972-07-21 | 1979-12-11 | Uniroyal, Ag | Method and apparatus for mixing viscous materials |
| JPS5249267A (en) * | 1975-10-17 | 1977-04-20 | Japan Steel Works Ltd | Degassing modifying extruder |
| DE2758266C2 (en) * | 1977-12-27 | 1982-11-25 | Hermann Berstorff Maschinenbau Gmbh, 3000 Hannover | Device for regulating the throughput of a single or twin screw extruder connected to a polymerisation system |
| JPS55139825A (en) * | 1979-03-29 | 1980-11-01 | Kobe Steel Ltd | Continuous type kneader |
| DE2931387A1 (en) * | 1979-08-02 | 1981-02-05 | Continental Gummi Werke Ag | Extrusion press for plastomers and elastomers - has radial kneading pins inserted in solid bridges across cooling jacket |
| DE3407789A1 (en) * | 1983-03-18 | 1984-10-25 | Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid | Screw extruder |
-
1985
- 1985-02-06 DE DE3503911A patent/DE3503911C1/en not_active Expired
- 1985-12-13 GB GB08530699A patent/GB2171636B/en not_active Expired
- 1985-12-27 CN CN85109401.5A patent/CN1003436B/en not_active Expired
-
1986
- 1986-01-16 AT AT0009886A patent/AT389672B/en not_active IP Right Cessation
- 1986-01-17 IT IT19107/86A patent/IT1204763B/en active
- 1986-01-21 SU SU864008377A patent/SU1393312A3/en active
- 1986-02-04 JP JP61021350A patent/JPH0655410B2/en not_active Expired - Lifetime
- 1986-02-04 FR FR868601493A patent/FR2576833B1/en not_active Expired
- 1986-02-05 CA CA000501151A patent/CA1282215C/en not_active Expired - Lifetime
- 1986-02-28 SE SE8600500A patent/SE8600500L/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| IT1204763B (en) | 1989-03-10 |
| JPH0655410B2 (en) | 1994-07-27 |
| GB2171636B (en) | 1988-12-14 |
| CN85109401A (en) | 1987-03-04 |
| SE8600500D0 (en) | 1986-02-04 |
| CN1003436B (en) | 1989-03-01 |
| DE3503911C1 (en) | 1986-09-04 |
| GB2171636A (en) | 1986-09-03 |
| IT8619107A0 (en) | 1986-01-17 |
| AT389672B (en) | 1990-01-10 |
| FR2576833A1 (en) | 1986-08-08 |
| SE8600500L (en) | 1986-08-07 |
| ATA9886A (en) | 1989-06-15 |
| SU1393312A3 (en) | 1988-04-30 |
| FR2576833B1 (en) | 1989-03-24 |
| JPS61182922A (en) | 1986-08-15 |
| GB8530699D0 (en) | 1986-01-22 |
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