DE10321592B3 - Linear drive system for moving machine parts, particularly on injection molding machines, comprises secondary drive shafts engaged with the main drive shaft via mitre gear unit fixed to a moving part - Google Patents
Linear drive system for moving machine parts, particularly on injection molding machines, comprises secondary drive shafts engaged with the main drive shaft via mitre gear unit fixed to a moving part Download PDFInfo
- Publication number
- DE10321592B3 DE10321592B3 DE2003121592 DE10321592A DE10321592B3 DE 10321592 B3 DE10321592 B3 DE 10321592B3 DE 2003121592 DE2003121592 DE 2003121592 DE 10321592 A DE10321592 A DE 10321592A DE 10321592 B3 DE10321592 B3 DE 10321592B3
- Authority
- DE
- Germany
- Prior art keywords
- drive
- drive shaft
- linear drive
- injection molding
- machine
- 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
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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
- B29C45/5008—Drive means therefor
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/66—Mould opening, closing or clamping devices mechanical
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C2045/1784—Component parts, details or accessories not otherwise provided for; Auxiliary operations not otherwise provided for
- B29C2045/1792—Machine parts driven by an electric motor, e.g. electric servomotor
- B29C2045/1794—Machine parts driven by an electric motor, e.g. electric servomotor by a rotor or directly coupled electric motor, e.g. using a tubular shaft motor
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
- B29C45/5008—Drive means therefor
- B29C2045/5028—Drive means therefor screws axially driven by the coaxial rotor of an electric motor
Abstract
Description
Die Erfindung betrifft einen Linearantrieb, insbesondere für zu bewegende Teile von Spritzgießmaschinen wie beispielsweise die bewegliche Formaufspannplatte oder einen Auswerfer. Der Linearantrieb ist aber auch für den Einspritzhub der Plastifizierschnecke geeignet.The invention relates to a linear drive, in particular for too moving parts of injection molding machines such as the movable platen or a Ejector. The linear drive is also for the injection stroke of the plasticizing screw suitable.
Aus der Druckschrift
Nachteilig an diesem Linearantrieb ist, dass zum Betätigen des Kniehebelmechanismus ein Spindeltrieb vorgesehen ist. Spindeltriebe für Schließeinheiten von Spritzgießmaschinen werden in den meisten Fällen mit Kugelumflaufspindeln ausgebildet. Diese haben den Nachteil, dass die Kraftübertragung punktförmig erfolgt, so dass die Kugeln im Kraftfluss sehr hohen Herz'schen Pressungen ausgesetzt sind. Dies führt dazu, dass derartige Spindeltriebe eine begrenzte Zuverlässigkeit aufweisen und die Lebensdauer nicht sehr hoch ist.A disadvantage of this linear drive is that to operate of the toggle mechanism, a spindle drive is provided. spindle drives for clamping units of injection molding machines are in most cases designed with ball screws. These have the disadvantage that the power transmission is punctiform, so that the balls in the power flow are exposed to very high cardiac pressures. This leads to, that such spindle drives have limited reliability and the service life is not very long.
Demgegenüber liegt der Erfindung die Aufgabe zugrunde, einen Linearantrieb zum Bewegen von Maschinenteilen anzugeben, insbesondere für zu bewegende Teile einer Spritzgießmaschine, bei dem eine geringere Pressung vorkommt und der infolgedessen eine wesentlich längere Lebensdauer aufweist als die bekannten Kugelumlaufspindeltriebe.In contrast, the invention is the The task is based on a linear drive for moving machine parts specify, especially for to moving parts of an injection molding machine, where there is less pressure and consequently one much longer Lifetime has than the known ball screw drives.
Zur Lösung dieser Aufgabe wird ein Linearantrieb mit den Merkmalen von Patentanspruch 1 vorgeschlagen. Vorteilhafte Ausgestaltungen und Weiterentwicklungen finden sich in den Unteransprüchen.To solve this problem, a Linear drive with the features of claim 1 proposed. There are advantageous refinements and developments in the subclaims.
Dadurch, dass zur Kraftübertragung ein oder mehrere über eine drehangetriebene Antriebswelle und eine Winkelgetriebe antreibbare Zahnrad-Zahnstange-Triebe vorgesehen sind, erfolgt die Kraftübertragung flächig, d.h. bei gleicher Kraft ist dieser Kraftübertragungsmechanismus wesentlich geringeren Belastungen ausgesetzt als wenn die gleiche Kraft punktförmig übertragen werden müsste, wie dies bei Kugelumlaufspindeln der Fall ist. Daraus ergibt sich eine höhere Betriebs- und Lebensdauer. Ausserdem kann im Gegensatz zu Kugelumlaufspindeln aufgrund der flächigen Kraftübertragung eine höhere Beschleunigung beim Bewegen der Maschinenteile vorgesehen werden. Dies wirkt sich insbesondere beim Öffnen und Zufahren einer Schließeinheit vorteilhaft aus und führt zu einer Verkürzung der Zykluszeit. Ein weiterer Vorteil besteht darin, dass die miteinander kämmenden Flächen in dem Winkelgetriebe sowie von Zahnrad und Zahnstange je nach Anwendungsfall größer oder kleiner dimensioniert werden können, so dass sich die Auslegung des Kraftübertragungsmechanismus hinsichtlich der erwarteten Belastung anpassen lässt. Bei Kugelumlaufspindeln ist eine Erhöhung der sich berührenden Flächen nur begrenzt möglich, da die Anzahl der umlaufenden Kugeln nur in begrenztem Masse erhöht werden kann.In that for power transmission one or more about a rotationally driven drive shaft and an angular gear drivable Gear rack drives are provided, the power transmission takes place area, i.e. with the same force, this power transmission mechanism is essential exposed to lower loads than if the same force was transmitted at points should be as is the case with ball screws. This results in one higher Operating and lifespan. In addition, in contrast to ball screws due to the flat power transmission a higher acceleration be provided when moving the machine parts. This affects especially when opening and closing a clamping unit advantageous and leads to a shortening the cycle time. Another advantage is that they work together meshing surfaces in the bevel gear as well as gear and rack depending on the application bigger or can be made smaller, so that the design of the power transmission mechanism regarding can be adjusted to the expected load. For ball screws an increase the touching surfaces only possible to a limited extent because the number of balls in circulation can only be increased to a limited extent.
Nachfolgend soll der erfindungsgemäße Linearantrieb anhand einer Kniehebelschließeinheit einer Spritzgießmaschine näher erläutert werden. Die Anwendung der erfindungsgemäßen Linearantriebe ist hierauf jedoch nicht beschränkt. Vielmehr kann der Linearantrieb bei allen zu bewegenden Maschinenteilen eingesetzt werden, beispielsweise zum Betätigen der Auswerferplatte oder für eine axiale Verschiebung der Plastifizierschnecke zum Ausführen des Einspritzhubs.The linear drive according to the invention is intended below using a toggle locking unit an injection molding machine are explained in more detail. The application of the linear drives according to the invention is however, not limited to this. Rather, the linear drive can be used for all machine parts to be moved are used, for example to actuate the ejector plate or for one axial displacement of the plasticizing screw to perform the Injection stroke.
Gemäß der Figur ist auf einem Maschinenbett
Das Winkelgetriebe
Die verzahnten Getriebe können von dem gleichen Schmiersystem geschmiert werden, das auch die Kniehebelgelenke mit Schmiermittel versorgt.The toothed gear can from the same lubrication system as the toggle joints supplied with lubricant.
Das Winkelgetriebe und/oder der Zahnrad-Zahnstange-Trieb könne als geschlossenes oder als offenes Getriebe ausgeführt werden, wobei die letztere Variante geringere Kosten verursacht.The bevel gear and / or the gear rack drive can as closed or run as an open gear, the latter Variant causes lower costs.
- 11
- Maschinenbettmachine bed
- 22
- Endplatteendplate
- 33
- KreuzkopfPhillips
- 44
- Statorstator
- 55
- Rotor (Hohlwellenrotor)rotor (Hollow shaft rotor)
- 66
- Antriebswelledrive shaft
- 77
- Winkelgetriebeangle gear
- 88th
- Zahnradgear
- 99
- Zahnstangerack
- 1010
- Abtriebswelleoutput shaft
- 1212
- HohlwellenmotorHollow shaft motor
- 1313
- Antriebskegelradpinion gear
- 1414
- Abtriebskegelradoutput bevel gear
- 1515
- Abtriebskegelradoutput bevel gear
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003121592 DE10321592B3 (en) | 2003-05-14 | 2003-05-14 | Linear drive system for moving machine parts, particularly on injection molding machines, comprises secondary drive shafts engaged with the main drive shaft via mitre gear unit fixed to a moving part |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003121592 DE10321592B3 (en) | 2003-05-14 | 2003-05-14 | Linear drive system for moving machine parts, particularly on injection molding machines, comprises secondary drive shafts engaged with the main drive shaft via mitre gear unit fixed to a moving part |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10321592B3 true DE10321592B3 (en) | 2004-09-16 |
Family
ID=32864503
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003121592 Expired - Fee Related DE10321592B3 (en) | 2003-05-14 | 2003-05-14 | Linear drive system for moving machine parts, particularly on injection molding machines, comprises secondary drive shafts engaged with the main drive shaft via mitre gear unit fixed to a moving part |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10321592B3 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006013305B3 (en) * | 2006-03-21 | 2007-07-05 | Minimax Gmbh & Co. Kg | Fire-extinguishing device for extinguishing defined object in area, has extinguishing agent container and control device is connected with linear drive which releases signal |
CN110027169A (en) * | 2019-05-31 | 2019-07-19 | 惠州市科启塑胶有限公司 | A kind of Shooting Technique molding machine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29502641U1 (en) * | 1994-02-24 | 1995-03-30 | Engel Gmbh Maschbau | Device for closing molds of an injection molding machine |
-
2003
- 2003-05-14 DE DE2003121592 patent/DE10321592B3/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29502641U1 (en) * | 1994-02-24 | 1995-03-30 | Engel Gmbh Maschbau | Device for closing molds of an injection molding machine |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006013305B3 (en) * | 2006-03-21 | 2007-07-05 | Minimax Gmbh & Co. Kg | Fire-extinguishing device for extinguishing defined object in area, has extinguishing agent container and control device is connected with linear drive which releases signal |
CN110027169A (en) * | 2019-05-31 | 2019-07-19 | 惠州市科启塑胶有限公司 | A kind of Shooting Technique molding machine |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of the examined application without publication of unexamined application | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |