WO2010063812A1 - Dispositif pour monter des pièces en matière plastique à l'intérieur d'un moule pour moulage par injection - Google Patents

Dispositif pour monter des pièces en matière plastique à l'intérieur d'un moule pour moulage par injection Download PDF

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Publication number
WO2010063812A1
WO2010063812A1 PCT/EP2009/066378 EP2009066378W WO2010063812A1 WO 2010063812 A1 WO2010063812 A1 WO 2010063812A1 EP 2009066378 W EP2009066378 W EP 2009066378W WO 2010063812 A1 WO2010063812 A1 WO 2010063812A1
Authority
WO
WIPO (PCT)
Prior art keywords
rod
injection mold
mold
carriage
distance
Prior art date
Application number
PCT/EP2009/066378
Other languages
German (de)
English (en)
Inventor
Udo Bodmer
Original Assignee
Awm Mold Tech Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Awm Mold Tech Ag filed Critical Awm Mold Tech Ag
Publication of WO2010063812A1 publication Critical patent/WO2010063812A1/fr

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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
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/006—Joining parts moulded in separate cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
    • B29L2031/565—Stoppers or lids for bottles, jars, or the like, e.g. closures for containers

Definitions

  • the invention is in the field of injection molds, in particular Verdeckelungsvor- directions for injection molds for producing hinged closures.
  • capping devices for capping hinge closures within an injection mold.
  • capping devices which are integrated in the injection mold. These integrated capping devices are sunk in the mold halves and remain in the injection mold when they close.
  • An advantage of the integrated capping devices is that they allow a shorter cycle time, as can already be capped during the startup of the injection mold. In addition, much less long travel paths are necessary, which also has a positive effect on the cycle time.
  • US4340352 from the company Global Precision Inc. was published in 1 982 and relates to a side-by-side capping device.
  • a connected via a hinge with a lid lower part cap is raised by a pin.
  • a closing arm mounted on a slide enters from the side. This raises the cap and closes it controlled by a link disc.
  • WOO228622A of the company Schoettli AG was published in 2002 and concerns a device that comes into action after opening a multi-cavity injection mold.
  • the closure bottoms are sitting on a core initially lifted only slightly out of their cavities.
  • the closure tops (lids), which are connected to the lower part of the closure via a hinge, are completely ejected and released.
  • a frame is inserted between the moldings after opening the mold.
  • Seh Ii esswalzen On the frame arms are arranged with Seh Ii esswalzen, by means of which the closures can be closed.
  • the device has a comparatively complicated structure.
  • US Pat. No. 4,440,082A to Marland MoId Inc. was published in 1 998 and relates to a capping device integrated in an injection mold.
  • a movable part of the cavity is rotatably mounted about an axis and can be rotated to open the mold to close the cap by 1 80 °.
  • the device has various disadvantages. On the one hand, it requires a complicated mold separation. On the other hand, the closure can not escape when closing. For this reason, this device can only be used for certain closure geometries.
  • EP-A 38671 2 from BVA SRL. was published in 2004 and relates to an integrated in an injection mold capping mechanism, which is integrated on curved paths.
  • the capping mechanism is countersunk on one side of the mold in one of the mold levels. After opening the mold a closing rod is to be moved along a gate under the cap, this lifting and then closing. It is not clear with which mechanism and how the bar should be moved.
  • Toppers are known from the prior art, which are integrated into an injection mold. For each lock row, they have a locking bar mounted on the ends and rotatable about a fixed radius about an axis. The closing bar and the axis are also moved laterally by means of an externally mounted carriage parallel to the main parting plane of the injection mold. When the injection mold is closed, the closing rod is arranged in a groove. After the mold is sufficiently wide open, the closing bar is raised by turning about the axis of the groove and moved by means of the carriage under the caps of the previously released from the core side hinged closures. At- Finally, the closures are closed by rotating the closing bar about the axis. A disadvantage of these capping devices is that they have only very limited flexibility. In addition, there is a problem in that the locking bar will vibrate during fast cycles and damage the hinges or the injection mold.
  • An object of the invention is to show an apparatus and a method by means of which assembly operations of multi-part plastic parts is possible within an injection mold.
  • Another object of the invention is to show an apparatus and a method by which a very efficient Verdeckein of hinge locks is possible.
  • the device according to the invention serves for mounting two or more plastic parts within an injection mold with a first and a second mold half, which can be opened along a parting plane in an opening direction.
  • the assembly process may be, for example, a closure (hood top) of an open-molded hinge closure.
  • a closure top (cap), which is integrally connected via a hinge with a closure lower part, placed and closed by means of the device on the closure base.
  • the device typically comprises a rod rotatably mounted on at least one arm at a fixed or variable distance about an axis.
  • the device has an actuating device which serves to adjust the distance between the rod and the axle. In general, the adjustment of the distance between the axle and rod takes place instead, while the rod rotates about the axis. If necessary, a movement in the longitudinal direction of the rod can be superimposed alternatively or as a supplement. It is also possible, if necessary, to superimpose a further rotational or translational movement.
  • the arm to which the at least one rod is attached a linear guide, along which the rod by means of the adjusting device in the radial direction or offset from it is displaceable.
  • One possibility is to use one or more link plates to adjust the distance between the rod and the axle.
  • the rod may interact directly with the link plate or be supported by rollers or rollers relative to it to minimize friction and abrasion.
  • the rod In order to suspect a lifting of the rod, the rod can be pressed by a spring against the at least one link plate.
  • the link plate can be made interchangeable. This makes it possible to easily adjust and optimize the movement. In contrast to the prior art, the inventive device has a much higher flexibility.
  • one or more rods are arranged on a displaceable approximately parallel to the parting plane of the injection mold slide. This makes it possible, after opening the injection mold and the release of the closures to be capped, to move the rod by means of the carriage in an optimal position below the cap before the assembly process begins.
  • the link discs may be arranged on the carriage and / or on one of the mold halves. Since the camshaft can be adjusted very easily and flexibly, even complicated closing procedures can be mapped.
  • At least one mechanical stop is present, which limits the path of the rod in at least one spatial direction in a defined position.
  • the at least one mechanical stop can be arranged between two cavities in order to catch the rod in its end position, resp. decelerate and to avoid reverberation to the rod in its final position.
  • the mechanical stop may include a damper which dampens the movement of the rod.
  • at least one mechanical stop can be arranged on the carriage and / or on one of the mold halves.
  • one of the rods can be equipped with a gripper which serves to manipulate the plastic parts.
  • the gripper may be formed as a protruding nose, which is at least partially suitable for guiding a plastic part.
  • the nose of the gripper can be designed so that it is operatively connected to the closure, respectively controlled hooks on this, in order to lift it when closing controlled by the adjustment over the spout. This actively avoids a collision.
  • the rod can also be designed as a tube.
  • the interior of the tube can be provided for carrying out a cooling medium, for example compressed air.
  • the compressed air can be directed through designated openings specifically to places that need to be additionally cooled.
  • Fig. 1 shows a first embodiment of an inventive device in one
  • Fig. 2 details of the device and the injection mold of Figure 1;
  • Fig. 3 The device in an enlarged view obliquely from behind in an intermediate position
  • Fig. 4 The device in an enlarged view obliquely from the front in an intermediate position.
  • FIG. 1 shows a first embodiment of an inventive device 1 obliquely from above.
  • Figure 2 shows the device according to Figure I 1, however, certain parts are hidden, so that the structure of the device is easier to see.
  • the device 1 is detached from an injection mold 2 and shown enlarged.
  • the device 1 is arranged in the interior of the injection mold 2, between a first and a second mold half 3, 4. Inside, rows of cavities 23 for making closures 6 can be seen.
  • the mold halves 3, 4 have moved apart so far, so that the device 1 can be used.
  • the device 1 is designed so that it can remain inside the mold 2 even when the mold 2 is closed.
  • the illustrated device 1 is used for closing (Verdeckein) of hinge fasteners 5, which are arranged on a core 6 of the first mold half 3 and against this free are placed.
  • a suitably adapted device with a correspondingly similar construction can also be provided, for example, for the assembly of multi-part components.
  • the rod 10 or portions thereof may be integrated into one or more cavities. If necessary, the rod itself or parts attached to it can form an outer wall of a cavity.
  • the device 1 is suitable for a variety of types of hinges and is not limited to a single hinge type.
  • FIGS. 1 to 4 two rows of cavities 23 are shown in each case.
  • a device 1 with a rod 10 is provided which runs parallel to the rows of cavities. If necessary, the rods 1 0 can also be supported between the arms 1 1, or stored to reduce the free length.
  • a device 1 has a rod 10 which, in the embodiment shown, is held at both ends by arms 11.
  • the arms 1 1 in turn are on a carriage 1 2 parallel to a parting plane 14 (y-direction) of the injection mold 2 slidably disposed and rotatable about an axis 1 3.
  • the carriage 1 2 can be moved along a guide rail 1 5.
  • the guide rail is fixedly arranged here opposite the one half of the mold.
  • the carriage 1 2 can be dispensed with.
  • the ends of the rod 1 0 are held in linear bearings 1 8.
  • the ends of the rod 1 0 are formed as a square, which avoid unwanted twisting of the rod 1 0 relative to the arms 1 1.
  • the cams 1 7 are here fixed to the carriage 1 0 mounted.
  • the rods 10 are pressed from outside against the cam disk 1 7 via springs 19. If necessary, an outer or an inner and an outer cam (not shown) can be used.
  • the carriage 1 2 with the adjusting device 1 6 and the rod 1 0 is shown enlarged.
  • the distance between the rod 1 0 and the axis 1 3 is defined depending on the angle of rotation about the axis 1 3.
  • the cam 1 7 can be easily optimized, the closing process.
  • the closure tops 8 by means attached to the rod 1 0 grippers 20 and guided on the closure bottom part 7 set.
  • the grippers 20 are designed as nose-shaped elements which are screwed to the rod 10.
  • the grippers 20 are designed such that they hook into an opening of the closure top 8 and guide the closure top on a defined by the cam 1 7 way on the closure bottom part 7.
  • the cam disks 1 7 are arranged lying inside and the arms 1 1 engage between the cam 1 7 and the carriage 1 2.
  • the drive of the arms 1 1 via a pinion 21 and a relative to the carriage 1 2 displaceable rack 22nd

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

L'invention porte sur un dispositif pour monter ou recouvrir deux pièces en matière plastique à l'intérieur d'un moule pour moulage par injection. Le moule pour moulage par injection comprend une première et une deuxième moitié de moule, qui peuvent être ouvertes, dans une direction d'ouverture, le long d'un plan de séparation. Une tige, qui est disposée contre au moins un bras, à une certaine distance de ce dernier, en rotation autour d'un axe, peut être déplacée, pour ce qui est de sa distance par rapport à l'axe, à l'aide d'un dispositif de réglage.
PCT/EP2009/066378 2008-12-04 2009-12-03 Dispositif pour monter des pièces en matière plastique à l'intérieur d'un moule pour moulage par injection WO2010063812A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH19052008A CH700086A2 (de) 2008-12-04 2008-12-04 Vorrichtung zum Montieren von Kunststoffteilen innerhalb einer Spritzgiessform.
CH01905/08 2008-12-04

Publications (1)

Publication Number Publication Date
WO2010063812A1 true WO2010063812A1 (fr) 2010-06-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/066378 WO2010063812A1 (fr) 2008-12-04 2009-12-03 Dispositif pour monter des pièces en matière plastique à l'intérieur d'un moule pour moulage par injection

Country Status (2)

Country Link
CH (1) CH700086A2 (fr)
WO (1) WO2010063812A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11186019B2 (en) * 2019-03-13 2021-11-30 Braunform Gmbh Tool for the injection molding of plastic molded parts and method for moving a slide of a tool half of the tool
US20210399543A1 (en) * 2018-06-13 2021-12-23 Nypromold Inc. In-mold lid closing apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040222559A1 (en) * 2003-05-07 2004-11-11 Gomes Manuel J. In mold closing mechanism
CA2505962A1 (fr) * 2005-05-02 2006-11-02 Stackteck Systems Limited Dispositif de fermeture de moule

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040222559A1 (en) * 2003-05-07 2004-11-11 Gomes Manuel J. In mold closing mechanism
CA2505962A1 (fr) * 2005-05-02 2006-11-02 Stackteck Systems Limited Dispositif de fermeture de moule

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210399543A1 (en) * 2018-06-13 2021-12-23 Nypromold Inc. In-mold lid closing apparatus
US11186019B2 (en) * 2019-03-13 2021-11-30 Braunform Gmbh Tool for the injection molding of plastic molded parts and method for moving a slide of a tool half of the tool

Also Published As

Publication number Publication date
CH700086A2 (de) 2010-06-15

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