WO2005077637A1 - Verfahren und vorrichtung zum spritzgiessen und montieren von kunststoffteilen - Google Patents
Verfahren und vorrichtung zum spritzgiessen und montieren von kunststoffteilen Download PDFInfo
- Publication number
- WO2005077637A1 WO2005077637A1 PCT/EP2005/050604 EP2005050604W WO2005077637A1 WO 2005077637 A1 WO2005077637 A1 WO 2005077637A1 EP 2005050604 W EP2005050604 W EP 2005050604W WO 2005077637 A1 WO2005077637 A1 WO 2005077637A1
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- WO
- WIPO (PCT)
- Prior art keywords
- injection molding
- parts
- mold
- molding apparatus
- parting plane
- Prior art date
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Classifications
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- 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
- 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
- B29C45/03—Injection moulding apparatus
- B29C45/04—Injection moulding apparatus using movable moulds or mould halves
- B29C45/0441—Injection moulding apparatus using movable moulds or mould halves involving a rotational movement
- B29C45/045—Injection moulding apparatus using movable moulds or mould halves involving a rotational movement mounted on the circumference of a rotating support having a rotating axis perpendicular to the mould opening, closing or clamping direction
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- 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
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1615—The materials being injected at different moulding stations
- B29C45/1628—The materials being injected at different moulding stations using a mould carrier rotatable about an axis perpendicular to the opening and closing axis of the moulding stations
-
- 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
- B29C2045/0072—Joining parts moulded in separate cavities the parts to be joined being moulded in a stack mould
-
- 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
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1615—The materials being injected at different moulding stations
- B29C2045/1617—The materials being injected at different moulding stations using stack moulds
-
- 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
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
- B29C45/2606—Guiding or centering means
-
- 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
- B29C45/26—Moulds
- B29C45/32—Moulds having several axially spaced mould cavities, i.e. for making several separated articles
-
- 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
Definitions
- the invention relates to a device and a method for producing plastic parts, in particular consisting of several individual parts plastic parts according to the preamble of the independent claims.
- the European patent EP 1 55802 of the same Applicant shows an injection molding apparatus with two production levels (parting planes) with a turning system, which is arranged between a fixed and a movable mold part and serves for holding a central molded part.
- the middle mold part is held by a lower and an upper traverse means of holding means and arranged to be movable about a vertical axis.
- the trusses are guided on the spars of an injection molding machine.
- the lower traverse if necessary, supported on the machine bed of the injection molding machine.
- the middle mold part can be replaced, the holding means are arranged relative to each other displaceable.
- a first material component is injected into a cavity, so that a first part is formed.
- the part of the first material component remains adhering to the central mold part upon opening of the mold and is brought therewith by rotating the central mold part into the second production plane, where it is operatively connected after closing the mold with a second material component.
- the middle molded part is supported by holding devices on the bars of an injection molding machine.
- EP0895848 by Ferromatik Milacron Maschinenbau GmbH, shows another device with two parting planes. Between a fixed and a movably arranged mold half a middle mold part is arranged which is mounted in a lower and an upper Traverse and supported on a machine bed of an injection molding. The middle part is arranged rotatable about a vertical axis by 180 ° and has only two sides Cavities up. The bearing in the area of the upper trusses can be opened so that the middle section can be removed.
- EP 1 1 19449 (henceforth EP'449), by Krauss Maffei Kunststofftechnik GmbH, shows an injection molding apparatus with two production levels, with a fixed and a movable mold half. Between the two mold halves, a mold middle part is arranged, which is held on one side by means of a recessed in the machine bed of an injection molding guide and rotatably disposed about an axis.
- the injection molding machine has been adapted to meet these special requirements.
- the device described in EP'449 is suitable for the production of parts from several plastic components.
- PCT / DK01 / 00699 (henceforth PCT699), by Jes Gram, the basic concept for a method is described in which, in at least one parting plane, two identical parts are assembled by welding them together.
- the proposed device for the implementation of the method has two each rotatable about an axis arranged middle parts, which are opened and closed with the injection mold.
- PCT699 generally describes a device for producing a single hollow body by a first
- both parting planes are opened symmetrically to their axes by 180 ° and then closing the injection mold are connected to each other materially.
- the material connection between the two half-shells takes place by joining the melted base material as a result of the closing movement of the mold.
- a heat source is provided, which is placed laterally next to the device.
- Each cycle creates a single hollow body. From PCT699, it can not be inferred in particular how the central parts must be stored in the injection mold in order to ensure proper functioning.
- the device proposed in PCT699 for performing the method gives no answer to questions which are essential to the implementation of the method.
- the two rotatable middle parts act together directly along a middle parting plane.
- a first and a third parting plane two first parts are produced simultaneously.
- the device is opened uniformly and the two first parts are joined together by means of the rotatable middle parts with a second part, which is held by the middle annular shaped part.
- the two first parts are still in a partially plastic state when they are connected to the first part, so that the first and the second part stick together. If the material is no longer sufficiently liquid, an external heater is provided to reflow the material.
- a major disadvantage of the devices known from the prior art is that parts are joined together by closing the mold via the main tool movement. This leads to a low precision and Verla ⁇ gsamung of the process, since the closing mechanism of the injection molding machine, which is responsible for the closing movement, is not suitable for mounting. In addition, can not be mounted individually in a device with a plurality of Kavticiane ⁇ per Schliessebene. It is an object of the invention to show a method and an apparatus for the production of complex parts, in particular assembly injection molding of multi-part products, which avoid the disadvantages of the prior art.
- An object of the invention is based on the implementation of an injection molding process in which two or more identical or different parts of the same or different material components are directly or indirectly connected to one another.
- the individual parts are preferably produced in the region of a first and a second parting plane of an injection molding device having a plurality of mold halves and are operatively connected to one another in the region of a third parting plane of the same injection molding device, preferably by utilizing the closing force or closing movement of the injection molding device. If required, it is provided that, as a rule, further parts are injected during the operative connection in the region of the third parting plane, in the first and in the second parting plane.
- the operative connection of at least two parts takes place by a separate operative connection means, which is preferably integrated in the region of cavities at least in one of the mold halves / mold carrier and usually closed, ie when the parting planes of the injection molding are closed, or closing
- a slide is arranged in the region of the cavities, which is designed so that it can bring into operative connection with a normally closed injection molding device by a relative movement of a first with a second part.
- the Wirkverbindun ⁇ smechanismus is preferably hydraulically or electrically driven and has, if necessary, sensors that monitor the process. If required, the active connection mechanism is designed such that a cavity-appropriate assembly, that is coordinated with each or a group of cavities, is possible.
- the device for carrying out the method according to the invention is preferably designed so that it can be used together with standard commercialized injection molding machines.
- the injection molding device is therefore designed so that it fits between Holmen an injection molding machine.
- the moving parts of the injection molding device are preferably supported relative to the spars of the injection molding machine or the machine bed.
- the movement of the moving parts of the injection molding device is coordinated with the movement of the injection molding device by means of at least one coordination mechanism.
- a coordination mechanism is dependent on the paths traveled by the moving parts the separation plane is coordinated so that the middle parts are rotated efficiently and simultaneously if necessary.
- the individual parts are preferably produced in the region of four parting planes and / or are operatively connected to one another. It is envisaged that more parts are usually sprayed during the Wirkverbinden. An active connection mechanism guarantees efficient assembly.
- a preferred form of the operative connection takes place by encapsulation of the first and the second part.
- plastic melt is introduced into cavities in the region of the third parting plane by means of a plasticizing unit usually arranged laterally or above the injection molding device, so that the at least one first part and the at least one second part are operatively connected.
- the additional cavities required for encapsulation in the region of a third, middle parting plane are formed, for example, by withdrawing a core or by specially shaped concave mold halves which cooperate with corresponding, convexly shaped opposite sides in the region of the first and second parting planes.
- a suitable device for carrying out the method comprises a first, fixedly arranged mold half and a second, compared to the first along guide means (Holmen, guide rails) movably arranged, half of the mold. Between the first and the second mold half at least two rotatable about a rotation center parts are arranged. The axes of rotation of the two preferably prismatic middle parts are generally aligned parallel or at a 90 ° angle to each other. The middle parts are guided along guide means. Depending on the application, the bars of the injection molding machine or other guide means, the z. B. are operatively connected to a machine bed of an injection molding machine, for linear guidance of the middle parts.
- guide means Holmen, guide rails
- cantilever-like elements are mounted in the region of the outer two mold halves and / or the machine plates, which serve for the support and storage of the middle parts.
- the central parts are rotatable about an axis perpendicular to the main movement direction of the injection molding machine and arranged to be displaceable parallel thereto, so that they are rotatable about their axis when the injection molding device is open.
- the middle parts can be arranged hanging or horizontally protruding. As a rule, the middle parts have an even number of mutually parallel arranged, corresponding side surfaces.
- the parts from the first part and the parts from the second parting plane are preferably detachably or non-detachably connected to one another by a friction connection, snap connection, press connection, by extrusion coating with the same or a further plastic component, ultrasonic welding or friction welding.
- the active compound is via a Wirkeritatismechanismus of the type described catchy.
- one or more further mold parts can be provided between two middle parts, which serve in conjunction with the central parts rotatable about an axis to form one or more cavities.
- This at least one further molded part is preferably guided along the same guide means as the central parts.
- the molding is one or more parts designed so that the operatively connected parts can be removed. If necessary, the mold half and / or the middle parts have slides which guarantee better demoldability of the manufactured parts.
- the kinematics of the mutually moving parts is matched to the additional element respectively contributes to this bill.
- the process described in PCT699 can not be realized with conventional injection molds. There are therefore injection molding required, which meet the special requirements.
- the injection molding apparatuses suitable for carrying out the method have substantially more moving parts which must be brought into precise coordination with one another, so that a collision-free opening and closing of the injection molding apparatus is guaranteed.
- the inventive injection molding apparatus is suitable for the production and assembly of multi-part plastic parts.
- Plastic parts are manufactured by injection molding in the region of at least two Trennebene ⁇ and mounted in the range of at least one further parting plane, respectively operatively connected.
- the parts are machined and / or mounted and / or removed outside in the area of the free side surfaces of the middle parts.
- the invention is suitable, inter alia, for the production of closures for beverage packaging.
- multi-piece "Push-PuH" closures with a base and base displaceable cap can be manufactured and assembled in an injection molding apparatus, each individually made up of one or more material components
- the separate operative connection device is, for example, at least one hydraulically actuated slide arranged in the region of the cavities, by means of which the parts execute a relative movement against one another and thus mounted become.
- the middle parts of the injection molding device are preferably configured cuboid and have four side surfaces, of which two are arranged parallel to each other.
- the middle parts are usually rotated by 90 ° or 180 ° in each work step, so that in the region of the first, respectively the second, parting plane produced parts after one or two Anlagen suitse ⁇ of the first, respectively the second, parting plane in the area the third parting plane, where they are brought into operative connection with each other.
- the so-called intermediate or free stations further processing steps, e.g. provided by handling robots are provided. If desired, it is possible to provide free cavities or parts adhering to the middle part with labels which are connected to new or existing parts during the next injection process.
- the intermediate stations are used as needed for cooling manufactured parts.
- the middle parts are preferably rotatable endlessly relative to the stationary parts of the injection molding device about an axis.
- the supply of rotatable about an axis arranged central parts with media such as water, air, oil and / or electricity, and sensor signals and manipulated variables is preferably carried out coaxially via a lower and / or upper holding device.
- the holding devices are designed for this purpose so that they allow a coaxial media guide.
- middle parts In the parting planes produced, respectively assembled parts are preferably moved between the individual stations by means of the middle parts.
- the middle parts on active or passive holding means.
- the middle parts usually have separate feeds for energy, information and supplies such as electricity, water, hydraulic oil and air.
- Energy and media are preferably guided by the axes of rotation of the middle parts, so that they can be rotated endlessly about their axes.
- the device described in PCT699 has the disadvantage that when opening and closing the injection mold no centering of the mold halves and / or the middle parts is provided to each other. As it has been shown, however, it is practically impossible, especially with larger injection molds, to inject the components of the injection molding compound, which are usually several tons high. Positioning mold so precisely that they always agree exactly when closing the mold. This has the consequence that the high-precision and sensitive cavities can be damaged, so that a proper functioning of the injection mold can not be guaranteed.
- centering and alignment of the mold halves and the middle parts relative to each other represents a difficulty that must be guaranteed in any case. Since the constituents of the injection molding device are usually to ⁇ en heavy metal blocks, which are opened and closed at considerable speed, centering of the mold can not be done alone on the cavities. Centering means are known from the prior art, which are used for centering of conventional injection molds with only one parting plane. These are usually on one side either on the fixed or the movable mold half protruding pin, which engage in openings provided for the other mold half. Since conventional injection molds are moved with only one parting plane usually only in one direction, the arrangement of the centering is usually no problem.
- a device according to the invention has a two-stage centering with an upstream preliminary and subsequent or superimposed fine centering. By pre-centering the molded parts are caught and then brought into precise alignment against each other with the fine centering
- the arrangement of the centering must meet special requirements, so that the injection molding can be closed at all.
- the known from the prior art arrangements of centering are not suitable because a closure of the form would not be possible.
- the centering means must be arranged so that the mold halves and the two middle parts can be closed in the different positions provided therefor. When centering pins are used, this means, for example, that the first, stationary mold half has four projecting centering pins in the area of the four corners, which with four on the corresponding side surfaces of the first center part mounted centering correspond.
- the second mold center part in turn has four projecting centering on the corresponding side surfaces, which are operatively connected with corresponding centering bushes of the first central part and the second, movably arranged mold half when closing the injection molding.
- the centering pins and the centering bushings are designed so that they cause a catching and precentering of the moving parts, so that they come to lie in the case of a certain malposition when closing in the correct end position, without damaging the sensitive cavities. If necessary, the centering pins and the centering bushings have a certain conicity at least in some areas, which supports the mutual alignment.
- the centering means are preferably designed such that they guarantee a centering of the mold before it is completely closed or the sensitive areas of the cavities be operatively connected to each other.
- the middle parts have further centering means which are suitable for locking the rotary movement of the central parts about their axis of rotation in positions provided for this purpose.
- the other centering means are usually locking pins, which engage in designated locking holes and prevent further rotation of the middle parts after reaching a defined end position.
- the locking pins are preferably hydraulically or electrically driven and have a latching mechanism.
- the locking openings, into which the locking pin or pins provided for this purpose are generally arranged at a 90 ° or 180 ° angle, so that the middle part can be fixed in a 90 ° or 180 ° angle.
- the further centering serve to determine the middle parts when reaching an end position, so that Hauptzentrierstoff, eg. in the form of centering pins that can perform fine centering.
- the holders of the middle parts and, if provided, the other mold halves are sufficient to meet particular requirements.
- the holder also has the advantage that it is suitable for use with conventional injection molding machines and injection molding apparatus with one or two middle parts.
- a preferred embodiment of a holder has a lower bearing, which is directly or indirectly connected to the machine bed of the injection molding machine. supports and / or is guided along this.
- An upper bearing takes place by means of a traverse, which is operatively connected to one or two bars of the injection molding machine and guided along this.
- the traverse and / or the lower bearing has, if necessary, a locking means for locking the rotatable Mold carrier used in designated positions.
- the holder is designed so that the middle parts are displaceable in the direction of the bars of the injection molding machine.
- the storage takes place for example by means supported on the machine bed of the injection molding machine rails.
- the traverse is operatively connected to the bars via linear bearings.
- the linear bearings are usually designed so that they can be easily detached from the bars, for example vorzugswei- se by the bearing shells are divisible in the vertical direction.
- One of the advantages is that the holder in the lower area has a narrow configuration, which allows a simple and time-saving removal between the bars by the two-sided guide is guaranteed that the elements of the injection molding are performed with high precision.
- a coordination mechanism has three threaded spindles arranged essentially parallel to one another, which connect the components of the injection molding device to one another.
- the Koordinatio ⁇ smechanismus has a first spindle, which operatively connects the first, fixed mold half with the second, movable mold half.
- the spindle is divided into two and has a first half with a first positive slope and a second half with a negative, to the first opposite slope.
- the spindle is operatively connected to the mold halves via attached to the mold halves fixed spindle nuts, respectively thrust bearing. If now the injection molding device is opened or closed, the first spindle rotates about its longitudinal axis. Due to the opposite spindle pitch of the first and the second part of the spindle, the spindle center of the first spindle is always in the middle between the first fixed and the second movable mold half. Alternatively, it is possible to arrange the Srjindel firmly on a suitable support and for it to arrange the spindle nuts rotatable.
- the second spindle the Spindelbock with the fixed mold half and the third spindle the Spindelbock with the movable mold half effectively connects the second and the third spindle are arranged so that the center of the second spindle at half the speed of the first spindle and the center of the third spindle are moved at 1.5 times the speed of the center of the first spindle.
- the center of the second spindle moves at one-quarter the speed of the movable mold half and the center of the third spindle at three-quarters the speed of the movable mold half.
- the centers of the second and third mandrels are operatively connected to the first and second center portions of the injection mold and coordinate their movement with respect to the fixed and movable mold halves.
- the coordination mechanism described causes when opening the injection molding the distance between the two middle parts is always twice as large as the distance between see the fixed mold half and the first, respectively the second middle part and the movable mold half. This takes into account the fact that when turning the middle parts about their axes more space between the middle parts is claimed as in the first and the last parting plane.
- the linear drive takes place by means of an active or passive one- or two-sided spindle drive, by means of a coordinated rack drive or actively, by means of a coordinated hydraulic drive, e.g. via hydraulic cylinders. If necessary or alternatively, a rack may be integrated into the rail system.
- An active drive system is understood to mean a drive which has its own power supply and enables autonomous movement of the moving parts.
- a passive drive system is understood to mean a drive which is operatively connected directly or indirectly to the main drive of the injection molding machine.
- a preferred embodiment of a passive drive has coordinating spindles.
- Another embodiment of a coordination mechanism has six racks in pairs coordinated in three groups. Two racks each are directly or indirectly operatively connected to one another via a pinion, which, for example, is rotatably connected to one of the traverses. supports.
- the toothpicks assigned in pairs and arranged essentially parallel to one another perform a relative movement relative to one another during opening and closing and are operatively connected to one another via at least one toothed wheel which engages at least in one of the two toothed racks.
- a preferred embodiment is designed such that the axis of the coordinating gearwheel moves approximately at half the relative speed.
- the division ratio of the speed and thus of the distance traveled is utilized for the positioning of the inner components arranged between the outer components, for example the middle parts. Other division ratios can be achieved by a plurality of gear wheels of different diameters operatively connected to one another, for example via an axle.
- Advantages of a Spi ⁇ delantriebes consist in the simple structure and in the use of standardized components.
- a coordination mechanism has operatively connected hydraulic cylinders. By an appropriate choice of the diameter of the cylinder, respectively the exchanged oil volume is achieved that move the intermediate parts at the desired speed. Hydraulic coordination mechanisms are either actively driven by a hydraulic pump or passively by driving hydraulic cylinders. If necessary, an active monitoring of the position of the middle parts is provided to prevent misalignment.
- a first and a second part in the first and the third outer parting plane are produced substantially simultaneously with the closed injection molding device by injecting liquid plastic into cavities assigned to one another.
- at least a first and a second part are operatively connected by means of at least one active connection means substantially simultaneously in the region of the second middle parting plane.
- the injection molding is opened along the parting planes and the two mold carriers each rotated about its axis of rotation by an angle of 90 ° or 180 °
- the parts just produced in the first and the third parting plane remain adhered to the mold carriers and are moved with them.
- the actively connected in the middle parting plane parts are moved by means of one of the mold carrier by an angle of 90 ° and removed in this position or ejected by separate ejectors and collected below the injection molding. Then we close the injection molding machine again and the process starts all over again.
- the second central parting plane is opened approximately twice as far as the first and the third parting plane. This enables efficient, time-saving turning.
- the operative connection of the two first parts in the second middle parting plane is independent of the movement of the injection molding machine.
- the operative connection of the two first parts in the second central parting plane takes place independently of one another in groups of mutually assigned cavities.
- one electric or one hydraulic motor is used per central part, which is directly or indirectly operatively connected to the middle parts.
- FIG. 1 shows a first embodiment of an injection molding with an injection molding machine
- FIG. 2 shows a second embodiment of an injection molding apparatus
- FIG. 3 shows a third embodiment of an injection molding from obliquely above
- FIG. 4 shows a fourth embodiment of an injection molding from obliquely above
- FIG. 5 shows a fifth embodiment of an injection molding from obliquely above
- Figure 6 shows the embodiment of Figure 5 obliquely from below
- Figure 7 shows the embodiment of Figure 5 from the front
- Figure 8 shows the embodiment of Figure 5 from above
- FIG. 9 shows a sixth embodiment of an injection molding apparatus
- FIG. 10 shows an opened injection molding device from above
- Figure 1 1 shows the injection molding of Figure 10 closed.
- the injection molding apparatus 1 shows a first embodiment of an inventive injection molding apparatus 1 with an injection molding machine 2.
- the injection molding apparatus 1 includes a first, fixed mold half 3 and a second, along guide means 4 displaceable (y direction) arranged second mold half 5.
- the first fixed mold half is on a fixed first platen 42 and the movable second mold half 5 is attached to a second, along Holmen 4 movable second platen 43 of the injection molding machine 2.
- the bars 4 of the injection molding machine 2 serve as guide means 4.
- the bars 4 in the front area are only partially (cut) so that a better view of the injection molding device 1 is possible.
- a first and a second middle part 6, 7 can be seen.
- the first and the second middle part 6, 7 each have a substantially cuboidal upper part 12, 13 (mold carrier) with cavity halves (not shown in detail, cf., FIG. 2), each of which is arranged around a vertical axis (z-direction) 8, 9 are rotatably driven driven.
- the first and the second middle part 6, 7 are mounted by means of guide means, here in the form of two parallel to the bars 4 and between them on a machine bed 18 of the injection molding machine 2 arranged guide rails 1 1.
- the middle parts 6, 7 each have a holder 10 in shape a base 14, 15, which are arranged along the guide rails 1 1 movable.
- the mold supports 12, 13 (tops) and the bases 14 (bases) via standardized interfaces (not shown) for the transfer of media such as water, air, electricity, hydraulic and electrical mechanical energy releasably operatively connected.
- media such as water, air, electricity, hydraulic and electrical mechanical energy releasably operatively connected.
- At least for the transfer of liquid and gaseous media commercially available, self-sealing quick-release couplings are particularly suitable.
- the transfer of electrical energy and digital information is usually carried out by means of suitable connectors.
- the exchange of media and energy between the upper part 12, 13 and the lower part 14, 15 of the middle parts 6, 7 preferably takes place coaxially through the corresponding axis of rotation. All media and power lines (not shown in detail) are preferably operatively connected to the lower part 14.
- the upper parts 13 are held only on one side.
- the bases 14, 15 of the middle parts 6, 7 preferably each have a rotary unit 16, 17, which is adapted to rotate the upper parts 12, 13 about their respective, here vertical axis of rotation 8, 9 (z-direction) relative to their base 14, 15 serve.
- the rotary units 16, 17 are arranged between the bases 14, 15 and the upper parts 12, 13 and have coaxial channels and openings which serve to exchange media and energy between the lower parts 14, 15 and the upper parts 13.
- the injection molding device 1 and the centering means 26, 27 are designed so that they can be opened and closed in 90 ° and / or 180 ° steps.
- the guide rails 11 are part of the injection molding machine 2 and are preferably fixedly connected to the machine bed 18.
- the guide rails 1 1 are part of the injection molding apparatus 1 and are removed, for example, in a mold change, by means of this from the injection molding machine 2.
- the guide rails 11, respectively the holder 10 of the upper parts 12, 13 are preferably designed so that they are adjustable in angle and orientation, so that a precise alignment with respect to the mold halves 3, 5 and the guide means 4, 1 1 is possible.
- the second, movably arranged mold half 5 is driven by a first hydraulic cylinder 20, which simultaneously serves to generate the closing force of the injection molding machine 2 acting between the first and the second mold half 3. 5.
- a first hydraulic cylinder 20 which simultaneously serves to generate the closing force of the injection molding machine 2 acting between the first and the second mold half 3. 5.
- Alternative embodiments, such as known from the prior art toggle mechanisms are possible.
- the two middle parts 6, 7 have a drive, here shown schematically as a spindle drive 21, on.
- the spindle drive 21 acts in the embodiment shown in the foot region of the middle parts 6, 7, in the vicinity of the guide rails 1 1 and serves to move the middle parts 6, 7, respectively opening and closing of the parting lines 22, 23, 24, in coordination with Movement of the second mold half 5.
- the spindle drive 21 is designed such that the first middle part 6 is moved essentially by 1/3 and the second middle part 7 is moved substantially at 2/3 of the speed of the second mold half 5. This ensures that in the open state between the Formhalften 3, 5 and the middle parts 6, 7 equal distances result.
- Other drive means such as hydraulic cylinders or electric drives are possible depending on the embodiment.
- gear ratios other than 1/4, 2/4, 1/4 are preferred, so that when opening the mold, the distances between the parts have different mass.
- the injection molding device 1 is shown in the open state.
- the cavities arranged in a first, a second and a third parting plane 22, 23, 24 (not shown in detail) are opened in this position.
- the mold halves 3, 5 and the middle parts 6, 7 are so far apart that the middle parts can be rotated about their axes of rotation 8, 9 together or independently.
- a second plasticizing unit 29 Here, behind the injection molding device 1 and arranged substantially at a right angle to this, is used for injecting plastic melt in cavities, which are arranged in the region of the second parting plane 23.
- the second plasticizing unit 29 is designed so that it is only operatively connected to this closed injection molding apparatus 1 and does not hinder an opening thereof.
- an injection device which is permanently operatively connected to the second mold half and is arranged above the first hydraulic cylinder 20, for example Centering means here in the form of centering pins 26 and centering holes 27 are used for catching and centering the mold halves 4, 5 and the middle parts 6, 7 after rotating the middle parts 6, 7 by means of the rotary units 16, 17 about their axes of rotation 8, 9.
- the centering prevent in that the cavities in the parting planes 22, 23, 24, for example as a result of a malposition when closing the injection molding apparatus 1, are damaged.
- the centering pins 26 and / or the centering bores 27 are designed to be conical, in whole or in places, so that optimum centering is achieved.
- the centering pins 26 and the centering bores 27 are arranged rotationally symmetrically alternating with respect to the rotary axes 8, 9.
- the arrangement of the centering means must satisfy a special arrangement.
- the centering means 26, 27 here in the edge region of the mold halves 4, 5, respectively, the middle parts 6, 7, respectively.
- the centering means 26, 27 can be designed such that they serve to remove the injection molding device 1 from the injection molding machine 2 when the injection molding device 1 is closed.
- Figure 2 shows a second embodiment of an injection molding apparatus 1 in a perspective view obliquely from above.
- the numbering corresponds to that of FIG. 1, so that regions of FIG. 1 which are not described here emerge.
- the injection molding apparatus 1 shown has between a fixed first and a in the direction of spars 4 (y-direction) movable second mold half 3, 5 in the direction of the spars 4 movably arranged third mold half 19, which between the first middle part 6 and the second Middle part 7 is arranged and generally has cavity halves on two opposite sides.
- the injection molding apparatus 1 has a first between the first mold half 3 and the first middle part 6, respectively the first middle part 6 and the third mold half 19, respectively the third mold half 19 and the second middle part 7, respectively the second middle part 7 and the second mold half 5 , a second, a third and a fourth separating plane 22, 23, 24, 25.
- the mold halves 3, 5, 19, respectively the middle parts 6, 7 cavities 38 in which in the closed injection molding device by means of a first longitudinal and a second and a third, laterally arranged plasticizing Purity 28. 29. 30 plastic melt is injected into the cavities 38.
- Plasticizing Purity 28, 29, 30 are arranged stationary in the embodiment shown.
- the second and the third, laterally arranged plasticizing units 29, 30 are designed so that they are uncoupled when opening the parting planes 22, 23, 24, 25. Depending on the field of application, a different arrangement of the plasticizing units is possible.
- the first and the second middle part 6, 7 are each arranged to rotate around a vertical axis of rotation 8, 9 here.
- the middle parts 6, 7 of the embodiment shown here not only below in the range of Maschinen ⁇ betts 18, but also by means of a first and a second upper cross member 31, 32 are also stored above the holder 10 and guide the tops 1 2, 13 of the middle parts 6, 7 each comprise a base 14, 15 supported on the machine bed 18 and an upper traverse 31, 32 each.
- the device is designed so that it can be easily removed from the injection molding machine.
- the third mold half 19 is guided in the lower region on the guide rails 1 1 and in the upper region by means of a third upper cross member 33.
- the trusses 31, 32, 33 are slidably formed along the spars 4.
- the drive (not shown in detail) of the middle parts 6, 7 and the third mold half 19 in the bar direction (y-direction) is usually designed so that when opening and closing the injection molding device 1, the first middle part 6 substantially with 1/4 in that the third mold half 19 is moved essentially at 2/4 and the second middle part 7 is moved substantially at 3/4 of the speed of the second mold half 5, so that the injection molding device is opened uniformly in the region of the parting planes 22, 23, 24, 25.
- Other gear ratios are possible.
- the linear drive in the y-direction is preferably carried out by means of an active or passive one- or two-sided spindle drive, by means of a rack and pinion drive or by means of hydraulic cylinders. If required, a rack can be integrated into the rail system.
- An active drive system is understood to mean a drive which has its own power supply and enables autonomous movement of the moving parts.
- a passive drive system is understood to mean a drive which is operatively connected directly or indirectly to the hydraulic drive 20 of the injection molding machine 2.
- a preferred embodiment of a passive drive has coordinating spindles.
- the cross members 31, 32, 33 of the embodiment shown are preferably designed so that the Wirkverbindu ⁇ g can be solved with the bars 4 of the injection molding machine 2.
- the lower mounting of the central parts 6, 7 and the third mold half 19 is preferably designed so that the Wirkverbi ⁇ dung to the guide rails 1 1 can be solved.
- the storage of the middle part in the upper part of a traverse which is operatively connected to bars 4 of an injection molding 2 and at the bottom of a rail system which is mounted on the machine bed 18 of the injection molding machine 2.
- the upper part serves as a mold, mold half or mold carrier.
- a lower and an upper rotary unit are provided in the region of the lower part and in the region of the upper cross member, which have channels inside, if required, for the coaxial supply of media for the upper part.
- the embodiment shown here is particularly suitable for the production of multi-part plastic parts, which consist of several plastic components.
- a manufacturing process can look like this.
- plastic parts are formed in cavities 38 substantially simultaneously by injection of plastic melt in the region of the four parting planes 22, 23, 24, 25. Subsequently, the cavities 38 are opened by moving apart the first, second and third mold halves 3, 5, 19 and the central parts 6, 7. The parts formed in the cavities 38 remain at the tops 12, 13 of the middle parts 6, 7 adhere and are guided by means of this to the next processing step
- a processing process usually proceeds as follows.
- a first plastic component is injected into one or more cavities 38, so that parts of the first plastic component are formed.
- parts of the first plastic component which were previously transported with the first upper part 12 of the first middle part 6 in two 90 ° steps counterclockwise about the axis of rotation 8 in the region of the first parting plane 22, in the region of the first parting plane 22 with a second Plastic component operatively connected. Parts of the first plastic component are again formed substantially simultaneously in the region of the third parting plane 24.
- the parts of the first parting plane 22, consisting of the first and the second plastic component, are then rotated 90 ° about the first by turning the first top part 12 Rotary axis 8 in the free front region (relative to the second and the third plasticizing unit 29, 30) of the injection molding device brought where they are fed to a further processing step.
- a third plastic component is injected into cavities 38, so that parts are formed.
- parts of these third plastic components in the region of the fourth parting plane 25 are operatively connected to a fourth plastic component by injecting them into cavities which are partially formed by the parts made of the third plastic component.
- the parts of the third plastic component are previously introduced with the injection molding device open by means of the second upper part 13 in the region of the fourth parting plane 25. A different order of processing steps is possible if needed.
- the plastic parts produced in the four parting planes 22, 23, 24, 25 are removed from the injection molding device 1 and / or by means of a robot (not shown in detail) ).
- further processing steps for example the labeling of the plastic parts or a cooling phase, can be provided.
- the injection molding device can have more than two middle parts 6, 7 and / or third mold halves 19.
- the third mold half 19 as the two central parts 6, 7 about a third axis of rotation (not shown in detail rotatably) rotatably arranged.
- the third mold half 19 has a corresponding storage for this purpose. This allows the production of very complicated plastic parts in a single injection molding device. If necessary, it is possible to combine middle sections with 2, 4 or 6 sides in the same injection molding device. Further processing steps can be realized, for example, by robots.
- FIG. 3 shows a further embodiment of an injection molding apparatus 1 in a perspective view obliquely from above.
- a fixed first mold half 3 is fixed.
- a second mold half 5 is attached on a second along spars 4.1, 4.2 of an injection molding machine (not shown in detail) slidably arranged platen 43.
- a first and a second middle part 6, 7 are arranged with respect to a base 14, 15 each about a rotation axis 8, 9 rotatable mold carrier 1 2, 13.
- the bases are in the illustrated embodiment formed as trusses 14, 1 5, which are in the embodiment shown with the lower bars 4.1 of the injection molding machine in operative connection.
- the trusses 14, 15 are driven driven along the spars 4.
- the operative connection between the cross members 14, 15 and the bars 4.1 is easily releasable.
- the crosspieces 14, 15 are in operative connection with the upper two bars 4.2 and the middle parts 6, 7 are arranged in a hanging manner. This embodiment offers the advantage that it is particularly easy to change the injection molding device.
- the mold carriers 12, 13 are connected by means of rotary units 16, 17 about the axes of rotation 8, 9 rotatably connected to the trusses 14, 15 operatively connected.
- the rotary units 16, 17 are preferably designed so that the mold carriers 12, 13 are endlessly rotatable about the axes of rotation 8, 9.
- the rotary units 16, 1 7 have channels inside, which serve for the exchange of supplies and the supply of energy to the mold carriers 12, 13.
- the Drehei ⁇ whatsoever 16, 17 are provided with a drive for the rotational movement of the mold carrier 12, 13 about the axes of rotation 8, 9.
- As drive preferably electric or hydraulic motors are used.
- the traverses 14, 15 are supported underneath on the machine bed (see FIG To be able to distribute the weight of the middle parts better. Between the trusses 14, 15 and the mold carriers 1 2, 13 separation points can be provided which allow separation of the mold carrier 12, 13 of the lower parts 14, 1 5.
- Figure 4 shows another embodiment of a Spritgiessvorraum in a perspective view of oblique view from above.
- a first and a second mold half 3, 5, as well as a first and a second about a vertical axis 8, 9 rotatable center part 6, 7 are arranged between a first fixed platen 42 and a movable along Holmen 4 second platen 43
- the middle parts. 6 , 7 here have cuboidal mold carrier 12, 13, which are supported on two sides by a lower and an upper cross member 48, 49 relative to the bars 4 of an injection molding apparatus, not shown.
- the trusses 48, 49 have holding means 50, which are releasably operatively connected to the mold carriers 12, 13 via interfaces.
- the holding means 50 are displaceable relative to each other so that the mold carriers 12, 13 can be removed from the injection molding machine.
- the holding means 50 have normalized interfaces which serve to transfer media to the mold carriers 12, 13.
- Centering, here in the form of centering pins 26 and center holes 27 are rotationally symmetrically arranged so that they engage in closing the mold carrier 12, 13 in closing the injection molding device 1 in each other.
- the centering means 26, 27 are designed such that they are suitable for correcting a certain misalignment of the mold carriers 12, 13 as a result of rotation about the axes of rotation 8, 9 relative to one another, or the mold halves 3, 5.
- the centering means are usually designed so that they allow a centering of the mold before it is completely closed, respectively, the sensitive cavities intermesh.
- the centering means have a length which corresponds approximately to twice the diameter of the centering means
- Figure 5 and Figure 6 show a further embodiment of an inventive injection molding apparatus 1 in a perspective view obliquely from above / front and obliquely from below / behind.
- Figures 7 and 8 show the same injection molding device 1 frontally from the front ( Figure 7) and from above ( Figure 8). The numbering in these three figures corresponds to to each other. Not all reference signs are present in all figures at the same time.
- the injection molding apparatus 1 is shown in the open position, ie with open parting planes 22, 23, 24.
- the injection molding apparatus 1 is arranged between a first fixed mold mounting plate 42 and a second mold mounting plate 43 of an injection molding machine (not shown in greater detail) along bars 4 (y-direction).
- the injection molding apparatus 1 has a first mold half 3 with cavity halves 38 which is operatively connected to the first mold mounting plate 42.
- a second mold half 5 with cavity halves 38 is operatively connected to the movable platen 43.
- a first and a second middle part 6, 7 are arranged, each about a vertical axis 8, 9 (z-direction), which are substantially perpendicular to the spars 4, are rotatable.
- Each central part 6, 7 has a lower and an upper traverse 48, 49 (x-direction), which are mounted longitudinally displaceably via bearings 51 on the bars 4 of the injection molding machine.
- the bearings 51 are designed to be divisible so that they can be easily detached from the spars thereof for the purpose of removing the injection molding device 1 from the injection molding machine by removing lower bearing shells 52.
- the trusses 48, 49 of each central part 6, 7 each have a holding means 50, which serves to hold a here cuboid mold carrier 12, 13 with cavities 38
- the associated holding means 50 of each central part 6, 7 are aligned with each other about axes of rotation 8, 9 rotatably mounted relative to the trusses 48, 49.
- the holding means 50 are operatively connected by means of pivotable about the axes of rotation 8, 9 bearing units 54 with their associated trusses 48, 49.
- the bearing units 54 preferably have preloaded bearings that guarantee precise guidance.
- the holding means 50 are preferably connected via quick couplings with the mold carriers, so that the mold carrier can be easily installed and removed.
- the holding means 50 are slidably disposed relative to each other in the horizontal and / or vertical direction so that the mold carriers can be installed and removed without removing at least one of the trusses.
- the holding means 50 are arranged, if necessary, so that they can be adjusted individually for a fine adjustment in the vertical and / or horizontal direction within a certain range.
- the storage units 54 simultaneously serve to exchange media with the mold carriers 12, 13.
- the storage units 54 have connections 55 for media lines such as water, hydraulic oil, etc. Other interfaces for the exchange of information and electrical energy are also available if required.
- the exchange of media with the mold carriers is usually coaxial through inner hollow shafts (not visible) of the bearing units 54 and the holding means 50.
- the coaxial media transfer is preferably carried out from the bottom and / or from the top.
- the rotary drive of the mold carrier 12, 13 about the axes of rotation 8, 9 takes place in the embodiment shown from the top over the bearing units 54.
- Each central part 12, 13 has a servomotor 56, which via a toothed belt 57 with the mold carrier 12, 13 operatively connected
- the servo motor is integrated with the bearing units 54.
- the mold carrier 1 2, 13 rotate precisely about the axes of rotation 8, 9.
- the middle parts 6, 7 of the injection molding device 1 are in the embodiment shown by linear bearings 60 on the machine bed of the injection molding machine (not shown in detail) supported between the bars 4 (see Figure 6).
- the linear bearings 60 are used to compensate for the weight of the middle parts 6, 7 and the partial relief of the bars 4. They also serve as installation and removal aids.
- the linear bearings 60 cooperate with rails 61 which are arranged on the machine bed of the injection molding machine. If necessary, both the bearings 51 and the linear bearings 60 in angle, position and orientation with respect to the main movement direction (y-direction), respectively, the direction of the bars 4 of the injection molding device adjustable.
- the injection molding device 1 When the injection molding device 1 is closed, 23 parts are produced in the cavities 38 by injecting plastic in the region of the first and the second separation side 22, 23.
- the injection into the cavities 38 in the region of the first parting plane 22 is generally effected by an injection opening 44 in the fixed platen 42.
- the injection of plastic into cavities 38 of the second parting plane 23 is preferably effected by an injection unit arranged laterally next to or above the injection molding device 1 that either only temporarily operatively connected to the injection molding during the injection process or is continuously in communication and is moved. Injection takes place either directly or via the second, movable platen 43.
- parts (not shown in detail) made in the first and second parting planes 22, 23 are operatively connected to each other.
- the parts remain adhering to the mold carrier-side 12, 13 cavity halves 38 when the first and second parting planes 22, 23 are opened and are rotated by rotating the mold supports 12, 13 from the first and second parting planes 22, 23, respectively Area of the third parting plane 24 brought.
- the mold carriers 12, 13 are usually rotated by 90 ° or 180 ° about the axes of rotation 8, 9.
- 90 ° steps the parts are transported in two steps in the region of the third parting plane 24, so that during the intermediate step are arranged laterally on the injection molding device. In this position, the parts can either cool down or be subjected to a further processing step by an external device or a device integrated into the injection molding device.
- the injection molding apparatus 1 has coordinating means 65 which coordinate the movement of the moving parts during opening and closing of the injection molding apparatus 1.
- the embodiment shown has four coordination means 65, of which two each with the fixed platen 42, the upper two trusses 49 and the movable platen 43 and two each with the fixed platen 42, the lower two trusses 48 and the movable platen 43 operatively connected are.
- the Koordinatio ⁇ sstoff 65 are formed as modules which are mounted substantially at the height of the bars 4 and prevent lateral tilting of the trusses 48, 49 during opening and closing of the injection molding device 1.
- the coordination means 65 are fastened via detachable connections 66 to the platens 42, 43 and the trusses 48, 49.
- the coordination means 65 By removing the coordination means 65, the coordination between the moving parts of the injection molding apparatus 1 is canceled, so that the trusses 48, 49, e.g. when removing or inserting the mold halves 3, 5 or the mold carrier 12, 13 are independently of each other along the rails 4 slidably.
- Each of the four coordinating means 65 of the illustrated embodiment has first, second and third spindles 67, 68, 69 operatively connected to each other.
- each the spindles 67, 68, 69 is divided into two and has in the first half a first thread 70 with a positive pitch and in the second half a second thread 71 with a negative, the first side opposite slope.
- first spindle the first spindles on non-rotating thrust bearing 72 with a spindle block 73 (first spindle) or the trusses 48, 49 of the first, respectively the second middle part 6, 7 (second, or third spindle) operatively connected.
- the threads of the first spindle 67 are provided with corresponding fixed spindle nuts
- the spindle block 73 is always in the middle between the first and the second mold half 3, 5 respectively when opening or closing the injection molding apparatus 1 (with reference to the distance covered).
- the middle block moves at half the speed with respect to the relative velocity between the fixed first mold clamping plate 42 and the movable second mold mounting plate 43.
- the arranged between the first platen 42 and the spindle block 73 second spindle 68, respectively arranged between the spindle block 73 and the second Formautspannplatte 43 third spindle 69 have substantially the same structure as the first spindle 67.
- the second, respectively the third spindle 68th , 69 are in the region of their center via a thrust bearing 72 with the trusses 48, 49 operatively connected.
- the relative speed of the traverses of the first central part 6 is therefore determined by the relative speed between the fixed first platen 42 and the spindle block 73 and the speed of the trusses 48, 49 of the second middle part 7 by the relative speed between the spindle block 73 and the second platen 43 the described coordination mechanism 65 is achieved, that the first middle part 6 in the opening and closing of the SDritz ⁇ iessvorrichtun ⁇ 1 with a quarter and the second middle part 7 with three Quarter of the speed of the second platen 43 is moved, so that the distance y2 between the two middle parts 6, 7, respectively the two mold carriers 12, 13 in the region of the third parting plane 24 is substantially twice as large as the distances y3 and y4 between the first mold half 3 and the first mold carrier 12, respectively the second mold carrier 13 and the second mold half 5 in the region of the first and second parting plane 22, 23.
- the ratio can be influenced so that e.g. the entrained in the region of the spindle center part with a defined speed with respect to the second mold mounting plate 43 moves.
- the coordination means 65 described can also be used in a suitable manner with injection molding devices 1, in which the middle parts 6, 7 have a different bearing / support with respect to the bars.
- the center block 73 may be used to guide a third mold half, such as a second mold half. shown in Figure 2 can be used.
- the four coordination means 65 are removed, so that the middle parts are freely movable relative to each other.
- the injection molding device is open, the bearing shells 52 of the bearings 51 of the upper traverses 49 are released.
- the mold carriers 12, 13 can be removed together with the upper traverses 49.
- only the upper holding means 50 are first released and at first only the upper traverses 49 and then only the mold carriers 1 2, 13 are removed. Subsequently, the bearings 50 of the lower trusses can be opened and the lower trusses 48 are removed.
- a coordination mechanism which coordinates the paths traveled by the moving parts as a function of the parting plane is such that the middle parts are efficient and, if required, at the same time can be rotated (see Figure 8, schematically indicated here by circles kl and k2 on which the outer points of the mold carrier 12, 13 rotate).
- the parts of the first and second parting planes 22, 23 are operatively connected to each other. In a preferred embodiment, this is done by molding with a material component, for example, laterally or from above in other cavities (not shown) is injected. In a preferred embodiment, these further cavities result either through cooperation of the cavities 38 of the first and second mold carriers 12, 13 or alternatively or in addition by displacing a part of the injection mold, e.g. a slide (not shown in detail), in a mold carrier 1 2, 13. The injection into the other cavities is preferably carried out by a separate injection unit of the form described.
- the parts of the first and the second parting plane 22, 23 in the region of the third parting plane 24 mechanically joined together by a relative movement respectively directly or indirectly operatively connected.
- this is done by the closing movement of the injection molding device 1, but this may entail the disadvantage that the injection molding can not be closed with the maximum possible speed, respectively, there is a risk that the parts and / or the injection mold are damaged .
- Another problem is that the relative movement in this variant is very difficult to control and adjust due to the high mass of the moving parts.
- a separate operative connection device is provided, which is suitable for joining the parts Embodiment, at least one of the mold carriers 12, 13 is equipped with a separate active connection device which is functional, detached from the closing movement of the injection molding device 1.
- the active connection device is usually arranged at least partially in the interior and is in operative connection with parts which are arranged in the cavity halves 38 of the first and / or the second mold carrier 1 2, 13. If necessary, the active connection device has a structure which allows an adjustment of the force and / or the path per cavity or group of cavities.
- the active connection device is designed such that the parts of the corresponding cavities 38 to be joined together are joined together when the injection molding device 1 is closed can be.
- the active connection device is preferably hydraulically, mechanically and / or electrically driven and may be partially formed as part of a cavity.
- the active connection device is designed as an active connection slide which is designed in one or more parts. If required, each cavity 38 can be designed with a separate active connection device.
- the active connection device can be configured such that it is used only when the injection molding device is closed. Alternatively or in addition, the active connection device can be designed such that a superimposition or utilization of the closing movement of the injection molding device 1 for the joining of the parts to be joined takes place.
- the parts to be joined are joined together by means of the active connection device in one step or in several steps. For example, it is possible to bring at least the parts of a page in a certain position, respectively indemnify, before the actual operative connection process takes place. If necessary, the parts may be subjected to a further processing step after the active joining device has come into operation, e.g. by being at least partially overmoulded or welded.
- One of the advantages of a separate operative connection device is that the parts to be joined together are much more precise and gentler to process.
- joining is usually insufficient only by the closing movement of the injection molding device.
- FIG. 9 shows a further embodiment of an injection molding apparatus 1 in a perspective view obliquely from above.
- a fixed first mold half 3 is fixed.
- a second mold half 5 is attached to a second platen 43 displaceably arranged along spars 4 of an injection molding machine (not shown in greater detail).
- a first and a second middle part 6, 7 are arranged with one each to a first, resp. second rotation axis 8, 9 rotatable mold carrier 12, 13th
- the first and the second middle part 6, 7 are each here by means of a lower and an upper cantilever arms 36, 37 with respect to the mold halves 2, 3, resp.
- the cantilevers 36, 37 serve as a basis and as a linear guide.
- the cantilever arms 36 of the first middle part 6 are fixedly arranged with the first mold half 2.
- the cantilevers 37 which serve to support the second middle part 3, with the second mold half 5, respectively. the second platen 3, operatively connected and move with these.
- the mold carriers 12, 13 are rotatably connected to the cantilevers 36, 37 by means of rotary units 16, 17 about the axes of rotation 8, 9.
- the rotary units 16, 17 are preferably designed such that the mold carriers 12, 13 are endlessly rotatable about the axes of rotation 8, 9 and have channels inside for the exchange of operating materials and the supply of energy to the mold carriers 12 , 13 serve.
- the rotary units 16, 1 7 are provided with a drive for the rotational movement of the mold carriers 12, 13 about the axes of rotation 8, 9.
- As drive preferably electric or hydraulic motors are used.
- the cantilevers are preferably formed so that the middle parts can be moved independently of each other with respect to the first, respectively the second mold half.
- the middle parts 2, 3 are arranged so as to be displaceable in the longitudinal direction relative to the cantilever arms 36, 37 (shown schematically by arrows y5, y7). They are displaced and positioned by means of linear drives 41 along the cantilever arms 36, 37.
- the movement is coordinated with the movement (arrow y7) of the second half of the mold in such a way that no cycle time is lost and the center sections are rotated as quickly as possible
- the dividing planes are preferably unevenly opened around the axes of rotation 8, 9 for efficient rotation of the mold carriers 12, 13. If necessary, the weight of the middle parts can be supported by additional support, for example on the machine bed of the injection molding machine (not shown in detail) or via the bars 4, be compensated.
- the centering and alignment of the individual parts takes place in the manner described.
- linear actuators z. B. spindle, toothed belt, rack or hydraulic cylinder conceivable.
- Passive solutions may have a mechanical coupling with the movable mold half 3.
- the cantilevers are designed as linear guides or operatively connected with such.
- the mold carriers 12, 13 have corresponding cavities (not shown in more detail) in the area of their side surfaces, into which plastic is injected when the injection molding device 1 is closed.
- the mold carriers 12, 13 are equipped with active connection means which, when the injection molding device is closed, serve for mounting injection-molded parts in the middle closing plane.
- An active connection means is assigned to one or more cavities and can be controlled individually if required.
- the embodiment shown is suitable, inter alia, for smaller devices.
- FIGS. 10 and 11 schematically show an injection molding apparatus 1 in the open (FIG. 10) and closed position (FIG. 11). Shown are the fixed and the movable platen 42, 43 of an injection molding machine (not shown in detail) to which a fixed first and a movable second mold half 2, 3 are attached. Between the first and the second mold half 2, 3, a first and a second mold carrier can be seen, which are rotatably arranged about here perpendicular to the plane of rotation axes 8, 9.
- Figure 10 is shown in which position the mold halves 2, 3 are preferably rotated about the axes of rotation 8, 9.
- the distances yl, y2, y3 and y4 are given by the rotation radii R, which indicate the outer point of the mold carrier 1 2, 13.
- the diagonal position in which the mold carriers 12, 13 occupy the maximum extent is indicated by squares 12 ", 13 'In the embodiment shown, the rotation is most efficient when the distances y3 and y4 are approximately half the distance y2 and Distances y3 and y4 are selected such that the rotational radii R do not touch the first or the second mold half 2, 3.
- operative connection means 46 are shown, which serve for the assembly of parts in the region of the middle (second) parting plane 23 when the injection molding device 1 is closed. At substantially the same time, further plastic parts are produced in the first and third parting planes 22, 24.
- both mold carriers 1 2, 13 have active connection means 46. which are used for joining parts of two cavities assigned to one another. serve early. Depending on the field of application, it is possible to equip only one mold support 12, 13 or both alternately with active connection means 46, so that in the middle parting plane 23 the joining of parts takes place only in one direction. If required, a plurality of active connection means can also be provided which perform sequential or superimposed multi-stage processing. If necessary, processing steps and / or manipulations are possible when the device is open. 1 1, the active connection means 46 of the middle parting plane are brought together (see arrows y8), which represents a simplified connection process One of the advantages of the device shown is that the operative connection of parts can be decoupled from the main machine movement of the injection molding machines.
- the active connection means are preferably individual or a plurality of individually or jointly controllable slides, rake or transfer means or a combination thereof which are used simultaneously or sequentially. Depending on the function, the active connection means are moved or rotated parallel or perpendicular to the main movement direction of the injection molding machine. Other forms of movement are possible.
- the operative connection means are preferably driven via hydraulic or electric motors, or by means of a mechanical coupling with other parts of the device. Complex movements can e.g. be realized by involute. If necessary, the movements and the forces are monitored by means of sensors per cavity or a group of cavities. If required, the active connection means serve to eject the finished parts when the injection molding device is open.
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Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
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DE502005010510T DE502005010510D1 (de) | 2004-02-10 | 2005-02-10 | Verfahren und vorrichtung zum spritzgiessen und montieren von kunststoffteilen |
US10/569,774 US7670125B2 (en) | 2004-02-10 | 2005-02-10 | Device for injection moulding and assembling plastic parts |
EP05708001A EP1725386B1 (de) | 2004-02-10 | 2005-02-10 | Verfahren und vorrichtung zum spritzgiessen und montieren von kunststoffteilen |
CN2005800099514A CN1950186B (zh) | 2004-02-10 | 2005-02-10 | 注射模塑和装配塑料部件的方法和装置 |
AT05708001T ATE487583T1 (de) | 2004-02-10 | 2005-02-10 | Verfahren und vorrichtung zum spritzgiessen und montieren von kunststoffteilen |
DK05708001.2T DK1725386T3 (da) | 2004-02-10 | 2005-02-10 | Fremgangsmåde og apparat til sprøjtestøbning og montering af kunststofdele |
PL05708001T PL1725386T3 (pl) | 2004-02-10 | 2005-02-10 | Urządzenie i sposób do formowania wtryskowego i montowania elementów z tworzywa sztucznego |
HK07102220.1A HK1094883A1 (en) | 2004-02-10 | 2007-02-28 | Method and device for injection moulding and assembling plastic parts |
US12/685,555 US8470228B2 (en) | 2004-02-10 | 2010-01-11 | Method and a device for injection moulding and assembling plastic parts |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
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CH191/04 | 2004-02-10 | ||
CH1912004 | 2004-02-10 | ||
CH1598/04 | 2004-09-30 | ||
CH15982004 | 2004-09-30 | ||
CH17172004 | 2004-10-19 | ||
CH1717/04 | 2004-10-19 |
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US11/569,774 A-371-Of-International US7758839B2 (en) | 2004-06-04 | 2005-05-10 | Silicon and method for producing the same |
US12/685,555 Division US8470228B2 (en) | 2004-02-10 | 2010-01-11 | Method and a device for injection moulding and assembling plastic parts |
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WO2005077637A1 true WO2005077637A1 (de) | 2005-08-25 |
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PCT/EP2005/050604 WO2005077637A1 (de) | 2004-02-10 | 2005-02-10 | Verfahren und vorrichtung zum spritzgiessen und montieren von kunststoffteilen |
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US (2) | US7670125B2 (de) |
EP (3) | EP2266773B1 (de) |
AT (1) | ATE487583T1 (de) |
DE (2) | DE202005021394U1 (de) |
DK (1) | DK1725386T3 (de) |
HK (1) | HK1094883A1 (de) |
PL (1) | PL1725386T3 (de) |
PT (1) | PT1725386E (de) |
WO (1) | WO2005077637A1 (de) |
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WO2006106036A1 (de) * | 2005-04-08 | 2006-10-12 | Krauss Maffei Gmbh | Horizontalspritzgiessmaschine mit dreheinrichtung |
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US7871260B2 (en) | 2006-01-27 | 2011-01-18 | Firma G.B. Boucherie Naamloze Vennootschap | Device for manufacturing injection moulding pieces with turret having holders |
BE1016968A3 (nl) * | 2006-01-27 | 2007-11-06 | Boucherie Nv G B | Inrichting voor het vervaardigen van spuitgietstukken. |
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US8113820B2 (en) | 2006-06-13 | 2012-02-14 | Electroform Company, Inc. | Method and apparatus for molding and assembling plural-part plastic assemblies |
WO2007146217A2 (en) | 2006-06-13 | 2007-12-21 | Electroform Company, Inc. | Method and apparatus for molding and assembling plural-part plastic assemblies |
EP2032341A2 (de) * | 2006-06-13 | 2009-03-11 | Electroform Company, Inc. | Verfahren und vorrichtung zur formung und montage mehrteiliger kunststoffanordnungen |
US7951322B2 (en) | 2006-06-13 | 2011-05-31 | Electroform Company | Method and apparatus for molding and assembling plural-part plastic assemblies |
EP2032341A4 (de) * | 2006-06-13 | 2010-05-19 | Electroform Company Inc | Verfahren und vorrichtung zur formung und montage mehrteiliger kunststoffanordnungen |
EP1974886A1 (de) | 2007-03-28 | 2008-10-01 | Bayerische Motoren Werke Aktiengesellschaft | Vorrichtung zum Spritzgiessen eines mehrteiligen Kunststoffbauteils |
DE102007014847A1 (de) * | 2007-03-28 | 2008-10-02 | Bayerische Motoren Werke Aktiengesellschaft | Vorrichtung zum Spritzgießen eines mehrteiligen Kunststoffbauteils |
US8025828B2 (en) | 2007-12-24 | 2011-09-27 | Foboha Gmbh Formenbau | Injection molding device with a rotatable central part |
WO2009080827A2 (de) * | 2007-12-24 | 2009-07-02 | Foboha Gmbh Formenbau | Spritzgiessvorrichtung mit einem drehbaren mittelteil |
WO2009080827A3 (de) * | 2007-12-24 | 2009-09-24 | Foboha Gmbh Formenbau | Spritzgiessvorrichtung mit einem drehbaren mittelteil |
DE102009023719A1 (de) | 2009-06-03 | 2010-12-09 | Zahoransky Formenbau Gmbh | Spritzgießmaschine |
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EP2258531A1 (de) | 2009-06-03 | 2010-12-08 | Zahoransky Formenbau Gmbh | Spritzgießmaschine |
EP2475505A4 (de) * | 2009-09-10 | 2014-04-30 | Keter Plastic Ltd | Injektionsformungsverfahren und darin hergestellter artikel |
EP2475505A1 (de) * | 2009-09-10 | 2012-07-18 | Keter Plastic Ltd. | Injektionsformungsverfahren und darin hergestellter artikel |
WO2011083002A1 (de) | 2009-12-16 | 2011-07-14 | Foboha Gmbh Formenbau | Verfahren zum herstellen eines mehrkomponentigen kunststoff-formteils mittels spritzgusstechnik sowie spritzgiessvorrichtung zur durchführung des verfahrens |
EP2353967A1 (de) * | 2010-02-10 | 2011-08-10 | Cie Automotive, S.A. | Zahnstangendruckstück für eine Lenksäule eines Automobils und Verfahren zur Herstellung derselben durch Spritzgießen |
US8764434B2 (en) | 2010-03-02 | 2014-07-01 | Foboha Gmbh Formenbau | Mounting device for a rotatable center part in an injection molding device |
WO2012006059A3 (en) * | 2010-06-29 | 2012-03-01 | The Procter & Gamble Company | Scalable injection molding systems |
CN102958664B (zh) * | 2010-06-29 | 2015-11-25 | 宝洁公司 | 可按比例缩放的注塑系统 |
CN102958664A (zh) * | 2010-06-29 | 2013-03-06 | 宝洁公司 | 可按比例缩放的注塑系统 |
DE102010035409A1 (de) | 2010-08-25 | 2012-03-01 | Kraussmaffei Technologies Gmbh | Wendeplatten-Spritzgießmaschine mit dezentralem Steuerungs- und Regelgerät |
WO2012025556A1 (de) | 2010-08-25 | 2012-03-01 | Kraussmaffei Technologies Gmbh | Wendeplatten-spritzgiessmaschine mit dezentralem steuerungs- und regelgerät |
ITAN20110120A1 (it) * | 2011-09-03 | 2013-03-04 | Fin Tema S R L | Attrezzatura di stampaggio per iniezione di materie plastiche |
DE102012008939A1 (de) | 2012-05-08 | 2013-11-14 | Zahoransky Formenbau Gmbh | Spritzgießmaschine |
DE102013013738A1 (de) | 2013-08-21 | 2015-02-26 | Ferromatik Milacron Gmbh | Spritzgießmaschine |
WO2015024657A1 (de) * | 2013-08-21 | 2015-02-26 | Ferromatik Milacron Gmbh | Mehrkomponenten-spritzgiessmaschine mit drehbarem mittelteil |
US10046495B2 (en) | 2013-08-21 | 2018-08-14 | Ferromatik Milacron Gmbh | Multi-component injection-molding machine having a rotatable center part |
US11413801B2 (en) | 2014-04-17 | 2022-08-16 | Foboha (Germany) Gmbh | Injection molding device |
AT520475A1 (de) * | 2016-06-07 | 2019-04-15 | Niigon Machines Ltd | Spritzgießmaschine mit Teilbearbeitungseinrichtung |
AT520475B1 (de) * | 2016-06-07 | 2020-12-15 | Niigon Machines Ltd | Spritzgießmaschine mit Teilbearbeitungseinrichtung |
US11559932B2 (en) | 2016-06-07 | 2023-01-24 | Niigon Machines Ltd. | Injection molding machine with part-handling apparatus |
US11472076B2 (en) | 2018-01-23 | 2022-10-18 | Foboha (Germany) Gmbh | Injection molding device |
US11826929B2 (en) | 2018-01-23 | 2023-11-28 | Foboha (Germany) Gmbh | Injection mould for producing complex moulded parts from plastic |
CN117162385A (zh) * | 2023-08-10 | 2023-12-05 | 佛山泡趣创新科技有限公司 | 一种模内装配的注塑模具 |
CN117162385B (zh) * | 2023-08-10 | 2024-06-11 | 深圳市和鑫晟科技有限公司 | 一种模内装配的注塑模具 |
Also Published As
Publication number | Publication date |
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EP2266773B1 (de) | 2016-10-05 |
HK1094883A1 (en) | 2007-04-13 |
DK1725386T3 (da) | 2011-02-21 |
DE202005021394U1 (de) | 2007-11-08 |
ATE487583T1 (de) | 2010-11-15 |
EP1725386A1 (de) | 2006-11-29 |
US7670125B2 (en) | 2010-03-02 |
US20100171237A1 (en) | 2010-07-08 |
US20060244178A1 (en) | 2006-11-02 |
EP2266774A3 (de) | 2012-05-23 |
PL1725386T3 (pl) | 2011-04-29 |
DE502005010510D1 (de) | 2010-12-23 |
EP2266773A2 (de) | 2010-12-29 |
EP1725386B1 (de) | 2010-11-10 |
EP2266773A3 (de) | 2012-05-23 |
EP2266774A2 (de) | 2010-12-29 |
EP2266774B1 (de) | 2013-11-27 |
PT1725386E (pt) | 2010-12-24 |
US8470228B2 (en) | 2013-06-25 |
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