EP2372065B1 - Method for producing a piston of a door drive - Google Patents
Method for producing a piston of a door drive Download PDFInfo
- Publication number
- EP2372065B1 EP2372065B1 EP11159927.0A EP11159927A EP2372065B1 EP 2372065 B1 EP2372065 B1 EP 2372065B1 EP 11159927 A EP11159927 A EP 11159927A EP 2372065 B1 EP2372065 B1 EP 2372065B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- toothing
- piston
- plastic
- insert
- bar
- 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.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 230000008093 supporting effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 210000001061 forehead Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
- E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
- E05F3/10—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
- E05F3/102—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction with rack-and-pinion transmission between driving shaft and piston within the closer housing
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
- E05Y2201/43—Motors
- E05Y2201/448—Fluid motors; Details thereof
- E05Y2201/456—Pistons
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
- E05Y2800/45—Manufacturing
- E05Y2800/46—Injection moulding
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
- E05Y2800/67—Materials; Strength alteration thereof
- E05Y2800/68—Combinations of materials creating distinct article parts
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
- E05Y2900/13—Type of wing
- E05Y2900/132—Doors
Definitions
- the invention relates to a method for producing a piston of a door drive according to claim 1.
- a drive for a wing of a door or a window with a housing, with a receiving space for supporting the drive.
- the drive has a piston, which has a shape-stabilizing insert, wherein the piston wall thickness is formed at least in sections by an inner and outer side cover layer made of plastic.
- the EP 1 705 329 A1 discloses a drive for a wing of a door or a window, with a metal housing having a receiving space in which an energy storage and an at least partially made of plastic piston are arranged.
- the piston has at least one insert formed as a toothed part, with a toothing, which cooperates with a arranged on an output shaft of the drive pinion for wing movement.
- the invention has for its object to improve the production of an at least partially made of plastic piston of a door drive to the effect that the teeth of the piston is kept safe from plastic.
- An injection mold as it is used for the production of a piston of a door drive, usually consists of a plurality of identical mold cavities, which are designed for producing a respective piston. Each mold cavity has a core for receiving an insert, which has a supporting effect for the finished piston.
- the insert may be integrally or multiply joined, for example, welded, formed, wherein two the piston end faces forming end plates, a arranged between the end plates support web and a toothed web are provided. At the toothed web a toothing, which interacts with the pinion in the door drive, arranged.
- the arranged in the mold cavity core also has a toothing, which corresponds to the toothing of the toothed web of the insert.
- a toothing which corresponds to the toothing of the toothed web of the insert.
- at least one runner is provided in the injection mold, which is directed in the direction of the toothed web.
- at least two sprue channels are provided, which are directed in the direction of the toothed web and distributed along the longitudinal extent thereof.
- the overmolded piston is thus advantageously completely surrounded by plastic, wherein only the toothing is kept completely free of plastic.
- Fig. 1 is a mold cavity 1 shown an injection mold, which may usually have a plurality of mold cavities 1, whereby in an injection molding process, several parts can be produced.
- the mold cavity 1 is shown here in the open state, whereby the view is given on the mold body 2 serving for mounting the injection mold, which may also contain cooling holes and ejector, and on a core 3 for arranging an insert 6.
- the core 3 has a toothing 5, which corresponds to a toothing 10 of the insert 6, as shown in the Fig. 2 in one opposite the Fig. 1 enlarged view is shown.
- the insert 6 formed from two end disks 7, a support web 8 and a toothed web 9 is in the Fig. 3 shown. At the toothed web 9, the toothing 10 is formed.
- a runner 4.1 and a runner 4.2 are provided which are distributed along the extension of the insert 6, as shown in the figures.
- the Fig. 4 shows the mold cavity 1 with inserted insert 6.
- a further, optional manufacturing step is shown, wherein slide 11, 12 are inserted into the end plates 7 to form holes provided in the end plates.
- the slide 11, 12 may have a smaller diameter than already provided in the end plates 7 holes, whereby the holes can be provided with plastic 14 inside.
- the slide 11, 12 are inserted after closing the injection mold.
- the view in the opened state is used here to describe the process.
- the slides 11, 12 are of course already provided in the injection mold and are not shown in all figures for reasons of clarity. Also, other components that are required to operate the slider 11, 12, also for reasons of clarity, not shown. If no holes are provided or these are only attached to the finished product by post-processing, the slide can be omitted.
- the plastic 14 is injected over the longitudinally of the toothed web 9 spaced sprue channels 4.1 and 4.2.
- Fig. 6 is the open mold cavity 1 shown after the injection process.
- the toothing 10 is flush and without a gap on the toothing 5 of the core 3, whereby the teeth 10 on the system with the Gearing 5 completely free of plastic 14 remains.
- the support web 8 of the insert 6 slightly lifted from the core 3, whereby the support web 8 is thinly coated with plastic 14 on the core 3 side facing.
- FIG. 8 the overmolded piston 13 after removal from the mold cavity 1 is shown. There are the forehead slides 7 and the support bar 8 completely surrounded by plastic 14. Only the teeth 10 of the toothed web 9 is kept free of plastic 14. The toothed web 9 is otherwise surrounded by plastic 14, wherein the teeth of the toothing 10 laterally still have a layer of plastic 14, as shown in the Fig. 8 is shown.
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines Kolbens eines Türantriebs nach Anspruch 1.The invention relates to a method for producing a piston of a door drive according to
Aus der
Die
Es hat sich in der Praxis herausgestellt, dass das Freihalten der Verzahnung des Kolbens von Kunststoff problematisch ist, da durch den beim Spritzgießen auftretenden Spritzdruck Kunststoffmaterial auf die Verzahnung gelangen kann. Da sich das Ritzel auf der Verzahnung wälzt, ist die Verzahnung in diesem Bereich jedoch völlig frei von Kunststoff zu halten.It has been found in practice that the maintenance of the teeth of the piston of plastic is problematic, as can occur due to the injection pressure occurring during injection molding plastic material on the teeth. Since the pinion rotates on the toothing, but the teeth in this area is to keep completely free of plastic.
Der Erfindung liegt die Aufgabe zugrunde, die Herstellung eines zumindest teilweise aus Kunststoff bestehenden Kolbens eines Türantriebs dahingehend zu verbessern, dass die Verzahnung des Kolbens sicher von Kunststoff freigehalten ist.The invention has for its object to improve the production of an at least partially made of plastic piston of a door drive to the effect that the teeth of the piston is kept safe from plastic.
Die Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst.The object is solved by the features of
Eine Spritzgussform, wie diese für die Herstellung eines Kolbens eines Türantriebs verwendet wird, besteht in der Regel aus mehreren gleichen Formnestern, welche zur Herstellung jeweils eines Kolbens ausgebildet sind. Jedes Formnest weist einen Kern zur Aufnahme eines Einlegeteils auf, welches stützende Wirkung für den fertigen Kolben hat. Durch das Einlegeteil wird auch vorteilhaft die Wandstärke der aufzubringenden Kunststoffschicht in gleicher Stärke gehalten, wodurch eine gleichmäßige Kunststoffschicht ohne Einfallstellen erzielt wird. Das Einlegeteil kann einstückig oder mehrteilig gefügt, beispielsweise geschweißt, ausgebildet sein, wobei zwei die Kolbenstirnseiten bildende Stirnscheiben, ein zwischen den Stirnscheiben angeordneter Stützsteg und ein Verzahnungssteg vorgesehen sind. Am Verzahnungssteg ist eine Verzahnung, welche im Türantrieb mit dem Ritzel zusammenwirkt, angeordnet.An injection mold, as it is used for the production of a piston of a door drive, usually consists of a plurality of identical mold cavities, which are designed for producing a respective piston. Each mold cavity has a core for receiving an insert, which has a supporting effect for the finished piston. By inserting the wall thickness of the applied plastic layer is also advantageously maintained in the same strength, whereby a uniform plastic layer without sink marks is achieved. The insert may be integrally or multiply joined, for example, welded, formed, wherein two the piston end faces forming end plates, a arranged between the end plates support web and a toothed web are provided. At the toothed web a toothing, which interacts with the pinion in the door drive, arranged.
Der im Formnest angeordnete Kern weist ebenfalls eine Verzahnung auf, die mit der Verzahnung des Verzahnungsstegs des Einlegeteils korrespondiert. Um die Verzahnung des Verzahnungsstegs und damit die Verzahnung des nach dem Umspritzen mit Kunststoff fertigen Kolbens völlig von Kunststoff freizuhalten, ist in der Spritzgussform wenigstens ein Angusskanal vorgesehen, der in Richtung auf den Verzahnungssteg gerichtet ist. Vorzugsweise sind mindestens zwei Angusskanäle vorgesehen, die in Richtung auf den Verzahnungssteg gerichtet und entlang dessen Längserstreckung verteilt angeordnet sind. Beim Einspritzen des Kunststoffs wird dadurch die gegenüber den Angusskanälen am Verzahnungssteg angeordnete Verzahnung auf die Verzahnung des Kerns gepresst, wodurch diese so formschlüssig aufeinander liegen, sodass kein Kunststoff zwischen die Verzahnungen dringen kann.The arranged in the mold cavity core also has a toothing, which corresponds to the toothing of the toothed web of the insert. In order to keep the toothing of the toothed web and thus the toothing of the finished by molding with plastic piston completely free of plastic, at least one runner is provided in the injection mold, which is directed in the direction of the toothed web. Preferably, at least two sprue channels are provided, which are directed in the direction of the toothed web and distributed along the longitudinal extent thereof. When the plastic is injected, the toothing arranged opposite the sprue channels on the toothed web is thereby pressed onto the toothing of the core, as a result of which they lie on one another in a form-fitting manner so that no plastic can penetrate between the toothings.
Der umspritzte Kolben ist somit vorteilhaft vollständig von Kunststoff umgeben, wobei ausschließlich die Verzahnung völlig frei von Kunststoff gehalten ist.The overmolded piston is thus advantageously completely surrounded by plastic, wherein only the toothing is kept completely free of plastic.
Im Nachfolgenden wird ein Ausführungsbeispiel in der Zeichnung anhand der Figuren näher erläutert.In the following an embodiment in the drawing with reference to the figures will be explained in more detail.
Dabei zeigen:
- Fig. 1
- eine Ansicht auf ein geöffnetes Formnest eines Spritzgussform für einen Kolben;
- Fig. 2
- einen Ausschnitt des Kerns des Formnests gemäß
Fig. 1 in vergrößerter Ansicht; - Fig. 3
- ein Einlegeteil zur Herstellung des Kolbens;
- Fig. 4
- das Formnest gemäß
Fig. 1 mit eingesetztem Einlegeteil; - Fig. 5
- das Formnest mit Einlegeteil, wobei die Anordnung von Schiebern gezeigt ist;
- Fig. 6
- das Formnest gemäß
Fig. 5 nach dem Spritzvorgang mit dem umspritzten Kolben; - Fig. 7
- das Formnest nach dem Spritzvorgang, wobei die Anordnung der Schieber nicht gezeigt ist;
- Fig. 8
- der fertige, mit Kunststoff versehene Kolben.
- Fig. 1
- a view of an open mold cavity of an injection mold for a piston;
- Fig. 2
- a section of the core of the mold cavity according to
Fig. 1 in enlarged view; - Fig. 3
- an insert for making the piston;
- Fig. 4
- the mold nest according to
Fig. 1 with inserted insert; - Fig. 5
- the mold cavity with insert showing the arrangement of slides;
- Fig. 6
- the mold nest according to
Fig. 5 after the injection process with the overmolded piston; - Fig. 7
- the mold cavity after the injection process, wherein the arrangement of the slide is not shown;
- Fig. 8
- the finished, provided with plastic piston.
In
Der Kern 3 weist eine Verzahnung 5 auf, welche mit einer Verzahnung 10 des Einlegeteils 6 korrespondiert, wie es in der
Das aus zwei Stirnscheiben 7, einem Stützsteg 8 und einem Verzahnungssteg 9 gebildete Einlegeteil 6 ist in der
Um einen gleichmäßigen Andruck der Verzahnung 10 des Einlegeteils 8 an der Verzahnung 5 des Kerns 3 zu erhalten, sind ein Angusskanal 4.1 und ein Angusskanal 4.2 vorgesehen, welche längs der Erstreckung des Einlegeteils 6 verteilt angeordnet sind, wie es in den Figuren gezeigt ist.In order to obtain a uniform pressure of the toothing 10 of the
Die
Nach Einlegen des Einlegeteils 6 und Schließen der Spritzgussform sowie der Positionierung der Schieber 11, 12 wird der Kunststoff 14 über die längs des Verzahnungsstegs 9 beabstandet angeordneten Angusskanäle 4.1 und 4.2 eingespritzt.After inserting the
In der
In der
- 11
- Formnestcavity
- 22
- Formkörper, AuswerferseiteShaped body, ejector side
- 33
- Kerncore
- 4.14.1
- Angusskanalrunner
- 4.24.2
- Angusskanalrunner
- 55
- Verzahnung (Kern)Gearing (core)
- 66
- Einlegeteilinsert
- 77
- Stirnscheibeend disk
- 88th
- Stützstegsupporting web
- 99
- Verzahnungssteggearing bridge
- 1010
- Verzahnung (Einlegeteil)Toothing (insert)
- 1111
- Schieberpusher
- 1212
- Schieberpusher
- 1313
- Kolben, umspritztPiston, overmoulded
- 1414
- Kunststoffplastic
Claims (1)
- Method for producing a piston (13) of a door drive,
characterized by the steps of:- placing an insert (6), which comprises two end plates (7), a supporting bar (8) arranged between the end plates (7) and a toothing bar (9), into a mould cavity (1) of an injection mould,- placing a toothing (10) of the toothing bar (9) of the insert (6) against a corresponding toothing (5) of a core (3) in the mould cavity (1),- closing the injection mould,- injecting the plastic (14) through at least one feed channel (4.1, 4.2), preferably through at least two feed channels (4.1, 4.2) that are arranged spaced apart along the extent of the toothing bar (9) and are directed in the direction of the toothing bar (9), whereby the toothing (10) of the toothing bar (9) lies flush and without a gap against the toothing (5) of the core (3) and the toothing (10) of the toothing bar (9) that is up against the toothing (5) of the core (3) remains completely free of plastic (14);- opening the injection mould and removing the overmoulded piston (13).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010003384.7A DE102010003384B4 (en) | 2010-03-29 | 2010-03-29 | Method for producing a piston of a door drive |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2372065A2 EP2372065A2 (en) | 2011-10-05 |
EP2372065A3 EP2372065A3 (en) | 2014-08-27 |
EP2372065B1 true EP2372065B1 (en) | 2016-08-17 |
Family
ID=44227985
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11159927.0A Active EP2372065B1 (en) | 2010-03-29 | 2011-03-28 | Method for producing a piston of a door drive |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2372065B1 (en) |
DE (1) | DE102010003384B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019076746A1 (en) | 2017-10-16 | 2019-04-25 | Gretsch-Unitas Gmbh Baubeschlaege | Closing device for closing a door or window leaf |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995020090A1 (en) * | 1994-01-19 | 1995-07-27 | Gretsch-Unitas Gmbh | Door closer |
DE10259237B4 (en) | 2002-12-17 | 2006-02-09 | Geze Gmbh | Drive for a wing of a door or a window |
EP1705329A1 (en) | 2005-03-24 | 2006-09-27 | GEZE GmbH | Drive for a wing of a door or window |
-
2010
- 2010-03-29 DE DE102010003384.7A patent/DE102010003384B4/en active Active
-
2011
- 2011-03-28 EP EP11159927.0A patent/EP2372065B1/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019076746A1 (en) | 2017-10-16 | 2019-04-25 | Gretsch-Unitas Gmbh Baubeschlaege | Closing device for closing a door or window leaf |
DE202018006612U1 (en) | 2017-10-16 | 2021-07-05 | Gretsch-Unitas GmbH Baubeschläge | Closing device for closing a door or window sash |
Also Published As
Publication number | Publication date |
---|---|
DE102010003384A1 (en) | 2011-09-29 |
EP2372065A2 (en) | 2011-10-05 |
EP2372065A3 (en) | 2014-08-27 |
DE102010003384B4 (en) | 2016-12-01 |
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