DE1529918A1 - Plastic screw press with measuring sensors for the work piece - Google Patents
Plastic screw press with measuring sensors for the work pieceInfo
- Publication number
- DE1529918A1 DE1529918A1 DE19641529918 DE1529918A DE1529918A1 DE 1529918 A1 DE1529918 A1 DE 1529918A1 DE 19641529918 DE19641529918 DE 19641529918 DE 1529918 A DE1529918 A DE 1529918A DE 1529918 A1 DE1529918 A1 DE 1529918A1
- Authority
- DE
- Germany
- Prior art keywords
- screw
- screw press
- work piece
- measuring sensors
- plastic screw
- 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.)
- Pending
Links
Classifications
-
- 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
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/84—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders by heating or cooling the feeding screws
-
- 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
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92019—Pressure
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92009—Measured parameter
- B29C2948/92209—Temperature
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92323—Location or phase of measurement
- B29C2948/92361—Extrusion unit
- B29C2948/9238—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/9239—Screw or gear
-
- 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
Description
Kunststoff-Schneckenpresse mit Messfühlern fUr das Arbeitsgut P a t e n t a n m e 1 d u n g Die Erfindung bezieht sich auf eine Schneckenpresse fiEr die Herstellung von Gegenständen aus thermoplastischem Kunststoff.Plastic screw press with measuring sensors for the work piece P a t e n t a n t a n m e 1 d u n g The invention relates to a screw press fiEr the manufacture of objects made of thermoplastic material.
Derartige Schneckenpressen sind mit einer Reihe von druck-und temperaturempfindlichen Messfühlern ausgerüstet, mit denen die für eine fachgerechte Verarbeitung der thermoplastischen Massen erforderlichen Kennwerte überwacht werden.Such screw presses are sensitive to pressure and temperature Equipped with measuring sensors with which for a professional processing of the thermoplastic Masses required characteristic values are monitored.
Es ist bekannt, die Temperatur des Arbeitsgutes mit Thermoelementen zu erfassen, die in Bohrungen des die Förder-bzw.It is known to measure the temperature of the work item with thermocouples to record, which in the bores of the production or.
PreBschnecke umgebenden Zylindermantels eingelassen sind. Diese Erfassungsmethode ist jedoch ziemlich unzulänglich, denn die in dem Arbeitsgut oder auch in der Schnecke herrschenden Temperaturen werden nicht direkt erfasst, weil die Thermofühler wegen der sich an der Zylinderwandung entlangbewegenden Schneckengänge nicht in die Kunststoffmasse hineinragen dürfen. Hinzu kommt, dass die Wärmeleitfähigkeit der Kunststoffe bekanntlich relativ schlecht'ist. Hierdurch wird eine weitere Verfälschung des Messer. Tebniases bewirkt. Man hat daher versucht, diesen Unzulänglichkeiten durch besondere Eichungen der Aless-und Anzeigeinstrumente oder ihrer Folgeglieder zu begegnen. Es liegt auf der Hand, dass ... ie dem bekannten Erfassungsprinzip innewohnenden Mängel hierdurch nicht beseitigt, sondern nur mehr oder weniger abgeschwächt werden.PreBschnecke surrounding the cylinder jacket are embedded. This acquisition method is, however, quite inadequate, because that in the work piece or in the screw The prevailing temperatures are not recorded directly because the thermal sensors are due to the screw threads moving along the cylinder wall do not get into the plastic compound are allowed to protrude. In addition, the thermal conductivity of plastics is well known is relatively bad. This will further falsify the knife. Tebniases causes. Attempts have therefore been made to remedy these inadequacies by means of special calibrations to encounter the Aless and display instruments or their successors. It is on it is clear that ... the deficiencies inherent in the known recording principle as a result cannot be eliminated, but only more or less weakened.
Um ein möglichst gleiohmässiges Verarbeiten und damit ein einwandfreies Endprodukt zu erhalten, kann beispielsweise die tberwachung der Temperaturen in der Masse zufolge der scharfen und engen Aufsohmelzbereiche nicht gut genug sein. Ferner muss auch die bei dem jeweiligen, dem Stoff anzupassenden Drehzahlprogramm sioh einstellende Friktionswärme mit erfasst und gesteuert werden. Schliesslich soll sich die Uberwachung der einzelnen Messgrössen über den gesamten wirksamen Schneckenbereich vom Fülltrichter bis hin zum Spritzkopf erstrecken, um die Verarbeitung in allen ihren Einzelphasen kontrollieren zu können.To ensure that processing is as uniform as possible and therefore that it is flawless Obtaining the end product can be done, for example, by monitoring the Temperatures in the bulk do not result from the sharp and narrow melting areas be good enough. Furthermore, the must also be adapted to the respective substance The speed program, which adjusts the friction heat, can also be recorded and controlled. Ultimately, the monitoring of the individual measured quantities should be carried out over the entire effective screw area extend from the hopper to the die head in order to to be able to control the processing in all its individual phases.
Die vorliegende Erfindung setzt sich die Aufgabe, in Abwendung von der bekannten Erfassungsmethode eine Schneckenpresse anzugeben, bei der die Messfühler eine Überwachun der betreffenden Kenngrössen im Arbeitsgut selbst ermöglichen.The present invention has the task of avoiding specify the known detection method a screw press, in which the measuring sensor enable monitoring of the relevant parameters in the work item itself.
Um dies zu erreichen, ist die neue Schneckenpresse für die Herstellung von Gegenständen aus thermoplastischem Kunststoff, mit Messfühlern für das Arbeitsgut, erfindungsgemäss dadurch gekennzeichnet, dass die Förder-bzw. Preßschnecke mit zwischen den Schneckengängen auf dem Schneckenkern angebrachten I. : essfühlernt beispielsweise Thermoelementen,versehen ist. Der einzelne Messfühler kann dabei nur wenig über den Kerndurchmesser hinausragen, er kann aber auch tief in das Arbeitsgut, vorzugsweise bis in halbe Höhe der Schneckengänge, hineinragen. Auf jeden Fall bietet die Erfindung die Möglichkeit, die einzelnen Kenngrössen für das Arbeitsgut an jeder beliebigen Stelle der Förderräume zwischen den Schneckengängen abzun@@men. Es ist wohl offensichtlich, dass mit der erfindungsgemässen Ausbildung der Pressenschnecke eine bestmögliche Erfassung der Kenngrössen gewährleistet und damit eine Anwendung an sich bekannter vollautomatischer Regelungsvorriohtungen bei derartigen Schneckenpressen und demzufolge eine Einsparung an teuerem, fachlich geschulten Bedienungspersonal ermöglicht wird.To achieve this, the new screw press is available for manufacture of objects made of thermoplastic material, with measuring sensors for the work item, according to the invention characterized in that the conveying or. Press screw with between I. attached to the worm threads on the worm core: for example, it feels like eating Thermocouples. The individual measuring sensor can only have a little over the core diameter protrude, but it can also deeply into the work piece, preferably up to half the height of the worm threads. In any case, the invention offers the possibility of the individual parameters for the work item at any Place of the conveying chambers between the screw flights to be removed @@ men. It is obvious that with the design of the press screw according to the invention, the best possible Detection of the parameters guaranteed and thus an application itself better known fully automatic control devices in such screw presses and consequently a saving in expensive, professionally trained operating personnel is made possible.
Die Erfindung wird nachstehend anhand eines in der Zeichnung veranschaulichten AusfUhrungabeispiels erläutert.The invention is illustrated below with reference to one in the drawing Execution example explained.
Die nur im Teil gezeigte Förderschnecke 1 mit den Schneckengängen 2 ist mit Ther oelementen 3 und 4 versehen. Deren Anschlussleitungen 5 und 6 verlaufen durch den hohlen Schneckenkern zum rückwärtigen Ende der Schnecke. Dort werden sie in an sich bekannter Weise liber nach dem Sohleifringprinsip arbeitende Kontaktglieder in den feststehenden Teil der Schneckenpresse übertragen.The screw conveyor 1, shown only in part, with the screw flights 2 is provided with thermoelements 3 and 4. Their connecting lines 5 and 6 run through the hollow screw core to the rear end of the screw. There they will in a manner known per se via contact members working according to the sole ring principle transferred to the fixed part of the screw press.
Wie aus der Zeichung ersichtlich, ragt das Thermoelement4 nur wenig {ber die Oberfläche des Kernes hinaus, w4hrend das Dher-oelenent 3 sich etwa bis in halbe Hohe der Schneckengänge erstreckt.As can be seen from the drawing, the thermocouple 4 protrudes only a little {over the surface of the core, while the Dher oil 3 is about up to extends halfway up the worm threads.
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF0043238 | 1964-06-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1529918A1 true DE1529918A1 (en) | 1969-10-30 |
Family
ID=7099456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19641529918 Pending DE1529918A1 (en) | 1964-06-23 | 1964-06-23 | Plastic screw press with measuring sensors for the work piece |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1529918A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2801499A1 (en) * | 1978-01-11 | 1979-07-12 | Siemens Ag | EXTRUDER FOR THE TREATMENT OF HIGH TEMPERATURE-SENSITIVE PLASTICS |
-
1964
- 1964-06-23 DE DE19641529918 patent/DE1529918A1/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2801499A1 (en) * | 1978-01-11 | 1979-07-12 | Siemens Ag | EXTRUDER FOR THE TREATMENT OF HIGH TEMPERATURE-SENSITIVE PLASTICS |
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