DE102005041397A1 - Metallic molding tool for producing plastic parts, has recess closed by protection cover to inner side of lower part, where cover is provided with external thread that is screwed in internal thread provided at front side of recess - Google Patents
Metallic molding tool for producing plastic parts, has recess closed by protection cover to inner side of lower part, where cover is provided with external thread that is screwed in internal thread provided at front side of recess Download PDFInfo
- Publication number
- DE102005041397A1 DE102005041397A1 DE200510041397 DE102005041397A DE102005041397A1 DE 102005041397 A1 DE102005041397 A1 DE 102005041397A1 DE 200510041397 DE200510041397 DE 200510041397 DE 102005041397 A DE102005041397 A DE 102005041397A DE 102005041397 A1 DE102005041397 A1 DE 102005041397A1
- Authority
- DE
- Germany
- Prior art keywords
- recess
- tool
- mold
- screwed
- cover
- 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.)
- Withdrawn
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
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76003—Measured parameter
- B29C2945/76056—Flow rate
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76177—Location of measurement
- B29C2945/76254—Mould
- B29C2945/76257—Mould cavity
- B29C2945/7626—Mould cavity cavity walls
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76177—Location of measurement
- B29C2945/76287—Moulding material
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76344—Phase or stage of measurement
- B29C2945/76381—Injection
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein Formwerkzeug mit einem kapazitiven Sensor gemäß dem Oberbegriff des Patenanspruches 1.The The present invention relates to a mold with a capacitive Sensor according to the preamble of the patent claim 1.
Zur Herstellung von Kunststoffteilen werden Formwerkzeuge verwendet. Zur Herstellung komplexerer Kunststoffteile, die Hinterschnitte aufweisen, sind Formwerkzeuge mit steuerbaren Schiebern erforderlich. Manche Schieber müssen zu einem ganz bestimmten Zeitpunkt angesteuert werden, z.B. dann, wenn der in das Formwerkzeug eingebrachte flüssige Kunststoff eine bestimmte Stelle innerhalb des Formwerkzeugs erreicht. Hierfür werden Sensoren benötigt, die auf das Eindringen flüssigen Kunststoffs ansprechen.to Production of plastic parts, molds are used. For the production of more complex plastic parts, the undercuts have molds with controllable slides are required. Some sliders need be driven at a specific time, e.g. then, when the introduced into the mold liquid plastic a certain Reached within the mold. For this will be Sensors needed, the liquid on the penetration Address plastic.
Optische Sensoren sind hierfür nicht geeignet, da sie verschmutzen und somit unbrauchbar würden. Magnetische Sensoren sind für eine Anwendung in einem metallenen Formwerkzeug ebenfalls nicht geeignet. Durchgesetzt für derartige Anwendungen haben sich kapazitive Sensoren, die in Ausnehmungen des Formwerkzeugs angeordnet sind. Das Grundprinzip eines solchen Sensors besteht darin, Kapazitätsänderungen zu messen, die durch in das Formwerkzeug eindringenden Kunststoff hervorgerufen werden.optical Sensors are for this not suitable because they would pollute and thus become unusable. magnetic Sensors are for an application in a metal mold also not suitable. Enforced for Such applications have capacitive sensors in recesses of the mold are arranged. The basic principle of such Sensors is to capacity changes to measure, by penetrating into the mold plastic be caused.
Bei herkömmlichen Formwerkzeugen, die mit kapazitiven Sensoren ausgestattet sind, besteht das Problem, dass die in Ausnehmungen des Formwerkzeugs angeordneten kapazitiven Sensoren bereits nach relativ wenigen Produktionszyklen durch den mit relativ großem Druck in das Formwerkzeug injizierten Kunststoff beschädigt werden.at usual Molds equipped with capacitive sensors, There is the problem that in the recesses of the mold arranged capacitive sensors after relatively few production cycles by the one with relatively large Pressure in the mold injected plastic will be damaged.
Aufgabe der Erfindung ist es, ein Formwerkzeug mit einem kapazitiven Sensor zu schaffen, bei dem der Sensor besser vor Beschädigungen geschützt ist.task The invention is a mold with a capacitive sensor to create, in which the sensor is better protected against damage.
Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen.These The object is solved by the features of claim 1. advantageous Refinements and developments of the invention are the dependent claims remove.
Ausgangspunkt der Erfindung ist ein Formwerkzeug, das mindestens zwei zusammenfahrbare Werkzeugteile aufweist. Wenn sich die Werkzeugteile in einem geschlossenen Zustand befinden, bilden die Innenseiten der Werkzeugteile eine Form für ein herzustellendes Kunststoffteil. In mindestens einem der Werkzeugteile ist eine Ausnehmung vorgesehen, in der ein kapazitiver Sensor angeordnet ist. Mittels des kapazitiven Sensors kann ein Einströmen flüssigen Kunststoffs in die Form detektiert werden. Bei dem Kunststoff kann es sich beispielsweise um ein Duroplast-Material handeln. Mit dem Sensor kann insbesondere detektiert werden, wenn die "Kunststoff-Front" die Ausnehmung, in welcher der Sensor angeordnet ist, überströmt.starting point The invention relates to a molding tool comprising at least two movable tool parts having. When the tool parts are in a closed state are located, the inner sides of the tool parts form a mold for a manufactured Plastic part. In at least one of the tool parts is a recess provided in which a capacitive sensor is arranged. By means of the capacitive sensor can be an inflow of liquid plastic into the mold be detected. The plastic may be, for example to act a thermoset material. In particular, with the sensor be detected when the "plastic front" the recess, in which the sensor is arranged, flows over.
Der Kern der Erfindung besteht darin, dass die Ausnehmung, in der der kapazitive Sensor angeordnet ist, zur Innenseite des Werkzeugteils, in dem die Ausnehmung vorgesehen ist, durch eine Schutzkappe verschlossen ist. Der Begriff "Schutzkappe" ist sehr breit auszulegen. Gemeint ist ganz allgemein ein Schutzelement, welches verhindert, dass der in die Form eingebrachte flüssige Kunststoff mit dem kapazitiven Sensor in Kontakt tritt. Dadurch wird eine Beschädigung des kapazitiven Sensors durch den flüssigen Kunststoff vermieden.Of the Essence of the invention is that the recess in which the capacitive sensor is arranged, to the inside of the tool part, in which the recess is provided, closed by a protective cap is. The term "protective cap" is to be interpreted very broadly. In general, this refers to a protective element which prevents that introduced into the mold liquid plastic with the capacitive Sensor comes into contact. This will damage the capacitive sensor through the liquid Plastic avoided.
Nach einer Weiterbildung der Erfindung ist die Schutzkappe austauschbar angeordnet. Die Schutzkappe kann von der Stirnseite der Ausnehmung her in die Ausnehmung eingesetzt, eingeklemmt oder in sonstiger Weise im Bereich der Stirnseite der Ausnehmung angeordnet sein.To In a further development of the invention, the protective cap is replaceable arranged. The protective cap can from the front side of the recess her inserted into the recess, clamped or otherwise Way be arranged in the region of the end face of the recess.
Vorzugsweise ist die Schutzkappe kreisförmig. In diesem Fall kann vorgesehen sein, dass die Schutzkappe von der Stirnseite der Ausnehmung her in den kapazitiven Sensor eingeschraubt ist. Alternativ dazu kann die Schutzkappe auch mit einem Außengewinde und die Stirnseite der Ausnehmung mit einem Innengewinde versehen sein, so dass die Schutzkappe in die Ausnehmung eingeschraubt werden kann, was ein leichtes Austauschen der Schutzkappe ermöglicht. Die Schutzkappe kann beispielsweise aus Kunststoff hergestellt sein.Preferably the protective cap is circular. In this case, it can be provided that the protective cap of the End face of the recess ago screwed into the capacitive sensor is. Alternatively, the cap also with an external thread and the end face of the recess provided with an internal thread be, so that the protective cap are screwed into the recess can, which allows easy replacement of the cap. The protective cap can be made of plastic, for example.
Im
Folgenden wird die Erfindung im Zusammenhang mit der Zeichnung näher erläutert. Die
einzige
Das
Schieberelement
In
dem unteren Werkzeugteil
Um
eine Beschädigung
des kapazitiven Sensors
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510041397 DE102005041397A1 (en) | 2005-09-01 | 2005-09-01 | Metallic molding tool for producing plastic parts, has recess closed by protection cover to inner side of lower part, where cover is provided with external thread that is screwed in internal thread provided at front side of recess |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510041397 DE102005041397A1 (en) | 2005-09-01 | 2005-09-01 | Metallic molding tool for producing plastic parts, has recess closed by protection cover to inner side of lower part, where cover is provided with external thread that is screwed in internal thread provided at front side of recess |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005041397A1 true DE102005041397A1 (en) | 2007-03-08 |
Family
ID=37735409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200510041397 Withdrawn DE102005041397A1 (en) | 2005-09-01 | 2005-09-01 | Metallic molding tool for producing plastic parts, has recess closed by protection cover to inner side of lower part, where cover is provided with external thread that is screwed in internal thread provided at front side of recess |
Country Status (1)
Country | Link |
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DE (1) | DE102005041397A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107796479A (en) * | 2017-09-15 | 2018-03-13 | 青岛海尔施特劳斯水设备有限公司 | Water level probe, water tank and water purifier |
WO2019158339A1 (en) * | 2018-02-13 | 2019-08-22 | Kistler Holding Ag | Pressure sensor |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1312433A (en) * | 1971-03-16 | 1973-04-04 | Rosemount Eng Co Ltd | Liquid level detectors and capacitive propes therefor |
JPH06114871A (en) * | 1992-10-05 | 1994-04-26 | Komatsu Ltd | Reactive injection molding method and apparatus |
EP0672895A1 (en) * | 1993-09-22 | 1995-09-20 | Hoya Corporation | Liquid charging method and lens production method |
DE69521648T2 (en) * | 1994-05-20 | 2001-10-25 | Vlt Corp | Mold filling process |
JP2005199524A (en) * | 2004-01-14 | 2005-07-28 | Mitsubishi Heavy Ind Ltd | Rtm mold, its manufacturing method and rtm molding method |
-
2005
- 2005-09-01 DE DE200510041397 patent/DE102005041397A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1312433A (en) * | 1971-03-16 | 1973-04-04 | Rosemount Eng Co Ltd | Liquid level detectors and capacitive propes therefor |
JPH06114871A (en) * | 1992-10-05 | 1994-04-26 | Komatsu Ltd | Reactive injection molding method and apparatus |
EP0672895A1 (en) * | 1993-09-22 | 1995-09-20 | Hoya Corporation | Liquid charging method and lens production method |
DE69521648T2 (en) * | 1994-05-20 | 2001-10-25 | Vlt Corp | Mold filling process |
JP2005199524A (en) * | 2004-01-14 | 2005-07-28 | Mitsubishi Heavy Ind Ltd | Rtm mold, its manufacturing method and rtm molding method |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107796479A (en) * | 2017-09-15 | 2018-03-13 | 青岛海尔施特劳斯水设备有限公司 | Water level probe, water tank and water purifier |
WO2019158339A1 (en) * | 2018-02-13 | 2019-08-22 | Kistler Holding Ag | Pressure sensor |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
R012 | Request for examination validly filed |
Effective date: 20120511 |
|
R016 | Response to examination communication | ||
R120 | Application withdrawn or ip right abandoned |