WO2006048436A1 - Machine de moulage par injection comprenant au moins un entrainement direct - Google Patents

Machine de moulage par injection comprenant au moins un entrainement direct Download PDF

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Publication number
WO2006048436A1
WO2006048436A1 PCT/EP2005/055730 EP2005055730W WO2006048436A1 WO 2006048436 A1 WO2006048436 A1 WO 2006048436A1 EP 2005055730 W EP2005055730 W EP 2005055730W WO 2006048436 A1 WO2006048436 A1 WO 2006048436A1
Authority
WO
WIPO (PCT)
Prior art keywords
injection molding
housing
molding machine
stator
component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2005/055730
Other languages
German (de)
English (en)
Inventor
Hans-Jürgen Popp
Helmut Schreiner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo SHI Demag Plastics Machinery GmbH
Original Assignee
Demag Ergotech GmbH
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 Demag Ergotech GmbH filed Critical Demag Ergotech GmbH
Publication of WO2006048436A1 publication Critical patent/WO2006048436A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C2045/1784—Component parts, details or accessories not otherwise provided for; Auxiliary operations not otherwise provided for
    • B29C2045/1792—Machine parts driven by an electric motor, e.g. electric servomotor
    • B29C2045/1794—Machine parts driven by an electric motor, e.g. electric servomotor by a rotor or directly coupled electric motor, e.g. using a tubular shaft motor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Definitions

  • the present invention relates to a method for producing a Spritzg screenmaschi ⁇ ne with at least one direct drive and an injection molding machine with at least one direct drive according to the preamble of independent claim 1.
  • Direct drives especially in the form of a servo motor, preferably as a high-torque version, are widely used in injection molding machines.
  • An advantage of them is that no separate transmission must be provided, but the force can be transmitted directly to an output shaft or other components, such as a spindle nut.
  • the injection molding machines can be made more compact, and there is no need to provide belt drives or the like for transmitting a rotational movement, as a result of which the susceptibility to errors, for example due to a belt break, and the noise load during operation of the machine substantially decreases.
  • Direct drives also produce comparatively less impurities during operation.
  • Direct drives can be used in injection molding machines essentially on all axesGu ⁇ on which a rotary motion must be transmitted, or along which a linear movement is to take place.
  • a rotary motion can be converted into a linear movement via a spindle drive.
  • US 5,804,224 teaches the use of a direct drive in which a threaded spindle is formed integrally with the rotor of the direct drive.
  • a direct drive in which a threaded spindle is formed integrally with the rotor of the direct drive.
  • Such a motor can, for example, be connected to the crosshead of a toggle-type locking unit, while the threaded spindle is in engagement with a spindle nut which is fastened to a support plate of the closing unit.
  • the toggle mechanism can be actuated and the closing unit can be opened or closed.
  • An engine of this type can also be used in an ejector unit, in which case the motor is fastened to a base which extends along guide rails.
  • NEN is movable relative to a movable platen.
  • the Auswer ⁇ By the rotation of the fixedly connected to the rotor threaded spindle, which is in engagement with a spindle nut which is fixed in the movable platen, the Auswer ⁇ can be actuated fer.
  • Such direct drives can furthermore be used for generating the advancing movement of the plasticizing screw as well as the docking movement of the injection unit to an injection nozzle in a fixed platen.
  • a closing unit for molding tools of injection molding machines is also known from EP 0 658 136 B1, in which a liquid-cooled servomotor, in particular an AC synchronous motor or a three-phase synchronous motor is provided, which has a hollow shaft within which the threaded spindle can be axially displaced via a nut is.
  • the nut is firmly connected to the rotor of the hollow shaft motor, while the spindle rotatably engages a crosshead of a toggle lever system.
  • the hollow shaft motor is docked on a rear side of a support plate of the closing unit, and the spindle nut is fixedly connected to a hollow shaft of the motor, so that when the spindle nut is actuated, the threaded spindle is axially displaced and can dip into the hollow shaft of the motor.
  • the structure chosen here is structurally relatively complicated and also space-consuming, since the spindle nut is mounted outside of the hollow shaft motor in the support plate itself, and with the hollow shaft of the motor only rotatably ver ⁇ connected.
  • the complete engine is docked onto the support plate from behind.
  • WO 02/064348 A1 also shows the use of hollow shaft motors in a knee lever closing unit of an injection molding machine.
  • a stator of the hollow shaft motor is connected to the toggle mechanism, preferably the crosshead, while the rotor via a spindle nut is engaged with a non-rotatable threaded spindle.
  • the support plate of the closing unit has a recess into which, in an opening state of the closing unit, the hollow shaft motor or the crosshead of the knee lever system can dip so as to enable a particularly compact construction of the locking unit.
  • the threaded spindle can be connected to the rotor of the hollow shaft motor, while a spindle nut which is in engagement with the threaded spindle is fastened in the support plate or in an end plate provided thereafter.
  • the support plate has a recess in order to Opening state, the hollow shaft motor or the crosshead at least partially auf ⁇ can.
  • the Hohlwellen ⁇ motor can be partially received in a recess of the end plate.
  • the threaded spindle is connected to the rotor of the hollow shaft motor and is engaged with a spindle nut which engages the toggle mechanism of the clamping unit.
  • EP 1 182 027 B1 describes a rotary drive for an extrusion device, in which a connecting section of the plasticizing screw is fastened thereto by means of a sleeve which is connected in a rotationally fixed manner to the rotor of a hollow shaft motor. It is therefore also well known to drive the screws of extruding or plasticizing devices with hollow shaft motors, but the structure of the hollow shaft motor is relatively expensive here, since a rotationally fixed housing part is provided in the drive housing between the rotor and sleeve the sleeve is supported by rolling bearings.
  • JP 61140363 A an electrically operated injection molding machine is known, in which the closing unit, the plasticizing screw and the injection process are actuated by direct drives.
  • a disadvantage of this is the special application-specific design and the fixed fitting of the respective motors in the injection molding machine.
  • JP 10225965 A shows a hollow shaft motor, which is docked to a tool clamping plate, and whose rotor is connected to a spindle nut which is in engagement with a threaded spindle which can dip into the hollow shaft motor.
  • This hollow shaft motor drives an ejector mechanism via the threaded spindle.
  • An injection unit for an injection molding machine is also known from US Pat. No. 6,364,650 B1, in which the screw feed is accomplished by a direct drive, which is designed as a hollow shaft motor.
  • the rotor is in this case rotationally fixed but axially displaceable connected to a grooved shaft, which in turn is fixedly connected to a threaded spindle.
  • This threaded spindle is engaged with a spindle nut fastened to a housing of the injection unit, whereby the rotational movement of the rotor is converted into a feed movement, which is transmitted indirectly to the plasticizing worm.
  • a receptacle for stator and rotor of the hollow shaft motor is provided in the frame.
  • the disadvantage of this is that coordinated and manufactured parts must be provided, and that it is not possible to subsequently replace new components against the original intended or generally use standard components.
  • Object of the present invention is to provide an injection molding machine with at least one direct drive, which is simple in construction, inexpensive to manufacture and easy to maintain, and in which in particular standardized engine components ge winnstrahld can be used. Likewise, a method for producing such an injection molding machine is to be provided.
  • a component of an injection molding machine can be provided with a housing, so that in a following step, a housing-less stator can be fitted into the housing.
  • a stator can spielnger have a substantially cylindrical outer contour.
  • a rotor of the direct drive cooperating with the stator can then be received in a rotatable manner.
  • the rotor can, for example, be rotatably mounted in the stator, or be rotatably mounted directly or indirectly in or on the component of the injection molding machine, while it is rotatable in the stator.
  • Such a stator is then supported during operation substantially against the housing and on this on the component of the injection molding machine.
  • the rotor can be rotatably received in the stator even before fitting the stator in the housing and in particular be stored.
  • An advantage of this is ins ⁇ particular that so the direct drive or stator and rotor can be obtained without a housing that already carries a significant share of the procurement price itself.
  • a component of the injection molding machine can also be provided with a plurality of housings for receiving the stators of a plurality of direct drives or different components of the injection molding machine can be provided with such housings, the interior of which is in each case dimensioned such that the respective stator of a direct drive can then be fitted into it.
  • the component can either be formed integrally with the housing, for example as a cast part, but it is also possible to firmly connect the housing to the component, for example by screwing or welding, before the stator is fitted into the housing.
  • the housing can also be provided in the component of the injection molding machine and be an integral part of the same.
  • the component may have a recess into which a housing-less stator can be fitted.
  • Advantageous in any case is the great flexibility that allows one to use the related stator in an already vorge ⁇ see housing. This may also include fitting, for example, interposition of spacer elements between the housing and the stator. This makes it possible to use stator-rotor combinations with different specifications, for example in terms of power, in a standardized housing, depending on the requirements.
  • the stator can subsequently be pushed into the housing, that is, it can be fitted particularly easily into the existing housing.
  • the housing can be sealed off from the environment, for example by a kind of cover, in order to protect the direct drive against environmental influences and to avoid noise pollution of the surroundings.
  • An advantage of the injection molding machine according to the invention is that a component of the injection molding machine, against which the direct drive is substantially supported, already has a housing whose interior is dimensioned such that the stator of the direct drive is housing-less and can also be retrofitted in this housing.
  • This embodiment takes into account the fact that when you buy direct drives, the supplied housing of the engine makes up a significant share of the price.
  • the costly motor housing can be dispensed with when purchasing standardized components of the direct drive, so that it is possible to use the Stored stator fit directly into the on the respective component of the injection molding machine vor ⁇ seen housing.
  • the interior of the housing is dimensioned such that the stator can also be retrofitted in the housing.
  • the construction according to the invention simultaneously affords an easily serviceable or adaptable machine to changing requirements, since the stator or even all components of the direct drive can subsequently be easily exchanged.
  • it is easy to react to a change in the field of application of the injection molding machine by providing a corresponding direct drive with the desired characteristics such as power consumption, torque, or the like. is used.
  • the rotor of the direct drive may be rotatably received or received in the stator, d. H. that either stator and rotor can be obtained as a unit, or can only be assembled into one another as individual parts, which further increases the flexibility of the arrangement.
  • the rotor may be rotatably received in the stator, but not in this, but for example directly on the component of the injection molding machine or be mounted on a rotatable element thereof via a further element.
  • the rotor of the direct drive may be connected to a spindle nut or an output shaft which drives, for example, a worm of a plasticizing unit or a threaded spindle.
  • the output shaft can also be designed as a spindle shaft itself.
  • the housing itself may be provided on one side of the component of the injection molding machine, which coincides with the movement transmission direction of the direct drive, or else on a counterpart. In this case, a breakthrough must be provided in the component which offers the possibility of transmitting a force between the diode provided in the housing. rect drive or its rotor and a force transmission element, such as a shaft, a spindle or the like produce.
  • a corresponding component of the injection molding machine can be formed plate-like at least in some areas, in particular can be provided on the mold platens or the support plate or on a component of a plasticizing and injection unit sol ⁇ che housing.
  • the housing may be substantially, but at least partially zylind ⁇ risch formed, in particular, the interior should have a shape corresponding to the most cylindrical stators.
  • stator and rotor After inserting and fitting the stator and rotor in the housing, with appropriate storage of the latter, it may be advantageous to complete the housing against the environment by a suitable cover to prevent contamination of the direct drive and the environment against running noise shield.
  • the housing may be formed integrally with the component of the injection molding machine, for example, by being a one-piece casting, which contains the housing be ⁇ .
  • the design is particularly simple and inexpensive, and it can come with appropriate dimensioning of the housing different stator-rotor combinations of a direct drive for different types of machines used.
  • the housing can be seen at least partially vorge ⁇ in the component and, for example, be formed substantially hollow cylindrical.
  • a part of the housing may be formed in the form of a recess, while another part is cantilevered. This allows in each case a particularly space-saving arrangement of the direct drive on the component.
  • the housing can also be firmly connected to the component of the injection molding machine. This is understood in particular that it can be screwed or welded together with the same.
  • This has the advantage that standardized components of an injection molding machine according to the invention can be equipped with a housing, while they are used in other applications without such. Since, in general, the housing fills a support function for the stator of the direct drive, it should be firmly connectable to the component. The stator itself can then be connected to the housing or else to a location of the component bordering the housing.
  • a housing it is also possible for a housing to be partially integral with a component of the injection molding machine, while a further part of the housing is connected to the component or the housing formed integrally therewith.
  • This can be advantageous, for example, if two direct drives are provided on the component, in particular in the manner of a series connection.
  • the closer to the component sitting stator can be accommodated in an integrally formed housing, while on this another housing for receiving a second stator is fixedly mounted, in which this is einpassbar.
  • the second housing or the second part of the Ge housing can be provided only in the case in which a second rotational movement is desired by a direct drive.
  • a single housing may be formed such that two stators are accommodated in it.
  • both stators can be retrofitted into the housing (s).
  • they can be pushed in, for example, into the permanently provided or mounted arrangement, if appropriate with the interposition of suitable spacer elements such as a locking ring. This greatly increases the flexibility in use.
  • the housing is at least partially blocked ⁇ forms in the manner of a pipe section.
  • This ensures a substantially cylindrical configuration of the housing, which enables a simple and in particular also subsequent fitting of a stator, and is furthermore inexpensive to produce.
  • a Pipe section provided with a flange and be connected via this fixed to the component of Spritz ⁇ casting machine.
  • the rotor can be mounted in the stator or be designed to be storable in the stator.
  • a linear drive namely the rotor and stator
  • the components of a linear drive namely the rotor and stator, stored in one another from the dealer, or else to mount them rotatably one inside the other.
  • a bearing of the rotor outside the stator may not be necessary, or else the requirements for such additional bearing of the rotor or an output shaft or a similar element connected to it can not be so high.
  • a bearing of the rotor in the stator only supportive to a Sieg ⁇ tion of the same in the component or a permanently connected to him element of the injection molding machine, such as a spindle nut, may be provided.
  • the stator can be connected to the housing in such a way that it is supported on the component of the injection molding machine via the die, so that the housing serves as a counter bearing for the movement transmitted by the direct drive, so that a force is essentially between the component and the one or more moving elements acts.
  • the component may be a movable or a fixed mold clamping plate.
  • the housing can here be provided, for example, substantially centrally on the side facing away from the mold, for example as an already cast-on, substantially tube-stump-like element which along a central axis enables a passage to the side of the mold mounting plate on which the mold can be seen ,
  • the housing can receive a direct drive, for example for generating a linear movement of an ejector mechanism, as is known per se in different variants. It is also conceivable to provide such a housing for a direct drive, for example in a lower region of a fixed platen, which can enable a starting movement of a plasticizing unit to the fixed mold clamping plate.
  • the component may be a support plate of a closing unit of an injection molding machine, also here the housing will advantageously be provided substantially centrally. It may be arranged on a movable platen of the clamping unit facing or also facing away from the then necessary provision of at least one passage in the support plate for an output member of the direct drive. In this way, for example, the bewegli ⁇ che platen are linearly displaced relative to the support plate.
  • a toggle mechanism can be used, for example.
  • the component may also be an element of an injection unit.
  • the direct drive can be used here for generating a linear movement, as required, for example, for the approach of the injection unit to a nozzle opening of a fixed platen or for the injection of a necessary Vor ⁇ thrust of operating according to the screw piston principle injection screw.
  • the direct drive can also be used for generating a rotary movement of the plasticizing screw of the injection unit.
  • the arrangement of the housing on the injection unit will be selected.
  • electrically driven movements with hydraulically generated movements that is, for example, foreseeing a rotary drive of the screw by means of a direct drive, but to hydraulically generate the advancing movement during injection.
  • the direct drive may be configured to drive a spindle drive, as known for generating linear motions by means of electric motors of the prior art.
  • the rotor may for example be fixedly connected to a threaded spindle, which cooperates with a non-rotatable spindle nut and thus causes a linear movement.
  • a spindle nut can be connected to the rotor and engage with a rotationally fixed threaded spindle.
  • the direct drive can also be embodied as a hollow shaft motor, and, for example, a screw shaft of an injection screw can be fixedly connected to the rotor, or be axially displaceable with it via a slot connection, thereby impeding the rotational movement of the plasticizer.
  • the worm screw is generated while at the same time the possibility of exerting a feed movement to the plasticizing screw during an injection process ent ⁇ either via a further direct drive or for example via a hydraulic allows.
  • Hollow-shaft motors are also used to drive a spindle drive, for example a spindle nut can be connected to the rotor, and the threaded spindle mounted non-rotatably on a counterpart can dip into the hollow shaft of the motor during rotation of the spindle nut, or the spindle nut can engage directly in the spindle nut Hollow shaft of the engine to be included, and the threaded spindle to enforce the hollow shaft motor.
  • such a spindle drive can be used advantageously for actuating a toggle lever drive for opening and closing the platens of a closing unit of an injection molding machine.
  • the threaded spindle can be non-rotatably connected to a crosshead of a toggle mechanism, alternatively, the spindle can be connected to the rotor of the direct drive and with a cross-head hinged spindle nut engaged.
  • non-rotatably arranged spindle nut can be provided particularly simple automatic lubrication of the spindle-nut connection.
  • a driven threaded spindle is suitable because of its relatively low mass and its small diameter and the resulting low moment of inertia.
  • a simple cooling of the direct drive can be provided, since this does not have to be subsequently integrated in a housing supplied.
  • the cooling can be carried out in particular by projecting the housing relative to the component by convection over the walls of the housing. It is also possible to provide a fan for the cooling, which in particular cools the interior of the housing with stator and rotor by air. Also, in particular in substantially tubular section-shaped design of the housing, water cooling can be easily applied, for example by looping the housing with cooling hoses or the like.
  • An injection molding machine according to the invention can have a plurality of housings for receiving stators belonging to different direct drives on one component. It can also be provided on several components such housing, in each of which a stator of a direct drive is subsequently adapted. It is also possible to design a housing such that a plurality of stators can be accommodated in it later.
  • the inventive provision of a housing for direct drive on a Bau ⁇ part of the injection molding machine itself thus allows the favorable use of a tech ⁇ nically very advantageous direct drive with high flexibility due to a wide Variation in the selection of the drive and good maintainability due to the subsequent fitment and interchangeability of the drive used, and is also platz ⁇ saving, since no separate housing of a purchased direct drive attached to the machine or otherwise integrated.
  • the inventive method provides a simple and flexible way to produce an injection molding machine according to the invention.
  • Fig. 1 shows a detail of a closing unit of an injection molding machine in
  • FIG. 2 shows a section of the closing unit according to FIG. 1 in the open state
  • Fig. 4 shows a modified embodiment of the injection unit of Fig. 3
  • Fig. 5 shows an alternative embodiment of an injection unit for a
  • FIG. 1 shows a closing unit 1 of an injection molding machine in a gezzie ⁇ NEN state in section.
  • a support plate 2 fixedly connected to a machine bed (not further shown) is connected via a toggle mechanism 6 with a counterweight. connected via the support plate 2 movable platen 4.
  • the section through the support plate 2 is designed such that in an upper region a Su ⁇ len take advantage is represented by the support plate, while it extends in the lower region substantially centrally.
  • the toggle mechanism 6 has a crosshead 8, with which a spindle nut 20 is rotatably connected.
  • a housing 10 Projecting on the support plate 2, a housing 10 is formed integrally therewith, which is substantially tubular in shape.
  • a stator 12 of a direct drive nachträg ⁇ Lich einpassbar is substantially tubular in shape.
  • the stator 12 is connected via not shown connecting means to the housing 10, and is supported by the interposition of the housing 10 on the support plate 2 from.
  • a rotor 14 is received, which is connected via a bearing shell 18 with a threaded spindle 16, which is in engagement with the spin ⁇ delmutter 20.
  • the spindle nut 20 may be a known spindle nut, for example a planetary spindle nut.
  • an opening or a passage is provided centrally of the housing 10, through which the threaded spindle 16 is guided.
  • the threaded spindle 16 is fixedly connected to the bearing shell 18 and rotatably mounted on the support plate 2, as well as the rotor 14.
  • a transmitter system 22 is provided, via which can record the exact angular position of the rotor 14.
  • Various techniques can be used for such a sensor system 22, for example via a belt that is articulated on the rotor or in the manner of a hollow shaft encoder.
  • the illustrated closing unit 1 has on the movable platen 4, a further analogously constructed housing 30, which forms an integral part of the platen 4.
  • a stator 32 is fitted, in which a rotor 34 is rotatably received, which drives a further threaded spindle 36 which is in engagement with a spindle nut 40, and on which a per se known and not shown ejector mechanism 42 with ejector 44 is linearly operable.
  • the ejector plate 44 is hereby adapted from the side.
  • FIG. 2 shows a closing unit 1 in an opened state
  • corresponding elements are identified by the same reference numerals.
  • the toggle mechanism 6 by rotation of the direct drive and thus the threaded spindle 16 by the transmitted to the crosshead 8 linear movement actuated.
  • the movable platen 4 is thus moved to the right or to the left.
  • a part of an injection unit 50 is shown schematically in section.
  • a plasticizing and injection screw 54 is rotatably and axially displaceably received. Via a coupling, the plasticizing screw 54 is rotatably connected to a threaded spindle 70.
  • the threaded spindle 70 is engaged with a spindle nut 68 which is rotatably and axially fixedly mounted in an injection unit housing 56.
  • a Sta ⁇ gate 62 of a first direct drive and, with the interposition of a spacer ring 82, which may for example be designed as a snap ring, a stator 72 of a second direct drive are fitted.
  • the housing 60 is closed off by a housing cover 84.
  • Rotors 64, 74 are rotatably received in the stator 62 of the first direct drive and in the stator 72 of the second direct drive.
  • the rotors 64, 74 are each connected to hollow shafts 66, 76 and rotatably mounted in the housing 60, here with the interposition of the spacer ring 82 and the housing cover 84.
  • the rotor 64 of the first direct drive is non-rotatably connected via the hollow shaft 66 to the spindle nut 68, which is in engagement with the threaded spindle 70 coupled to the plasticizing screw 54.
  • a rotational movement of the rotor 64 is transmitted to the Spindel ⁇ nut 68 and causes an axial displacement of the plasticizing 54th
  • the rotor 74 of the second direct drive is connected to the hollow shaft 76 and hub 78 verbun ⁇ . Via the hubs 78, which are axially displaceably engaged with a splined shaft 80 via a splined shaft profile, it can introduce a torque into the splined shaft 80 which is connected in a rotationally fixed manner to the plasticizing screw 54 via the threaded spindle 70. A rotation of the rotor 74 thus causes a rotational movement of the plasticizing screw 54.
  • FIG. 4 shows an alternative embodiment of the injection unit 50 according to FIG. 3 in a schematic manner in section.
  • the same parts retain the same reference numbers.
  • Formed integrally therewith with the injection unit housing 56 is another substantially tubular housing 60 'in which a stator 62 of a first direct drive is fitted. With the housing 60 'is another, substantially tubular ausgestaltetes housing 86 is screwed.
  • the two internal spaces defined by the housings 60 'and 86 are delimited from each other by a spacer ring 82 which can be inserted subsequently and which can be designed, for example, as a removable snap ring.
  • a stator 72 of a second direct drive is fitted in the housing 86. Both the stator 62 and the stator 72 are subsequently einschieb ⁇ bar in the assembled housing 60 'and 86.
  • the housing 86 is closed by a housing cover 84.
  • rotors 64, 74 are rotatably received.
  • the rotors 64, 74 are respectively connected to hollow shafts 66, 76 and rotatably mounted in the housings 60 ', 86, here with interposition of the spacer ring 82 and the housing cover 84.
  • the connection of the direct drives takes place analogously as in FIG. 3.
  • FIG. 5 schematically shows a sectional view of a further embodiment of an injection unit 88 according to the invention. Elements corresponding to FIG. 3 contain the same reference numerals.
  • the housing in the interior 98 of which both the stator 62 and the stator 72 are housing-free and subsequently adaptable, is an integral part of the injection unit housing 90.
  • a region of the injection unit housing 90 serves as a housing for accommodating a first and a housing second direct drive.
  • the injection unit housing 90 has a recess which forms the interior 98 of the housing.
  • the stators 62, 72 and rotors 64, 74 of the first and second direct drive are accommodated correspondingly to the arrangement according to FIG.
  • the injection unit housing 90 supports 92 are provided, via which the Ein ⁇ injection unit 88 relative to the machine bed 96 is movable.
  • the Ein ⁇ injection unit 88 relative to the machine bed 96 is movable.
  • this linear guides for example, be provided on this linear guides, with which the supports 92 are engaged.
  • the injection unit 88 can be moved between different positions, such as nozzle system and free spraying.
  • an injection molding machine By providing a housing according to the invention on a component of the injection molding machine, that is, for example, the support plate 2, the movable mold clamping plate 4 or a housing of the injection unit 56, in the interior of which the stator 12, 32, 62, 6, 72 of a direct drive are housing-less and can be added later, an injection molding machine can be presented, which is simple in construction, inexpensive to manufacture and easy to maintain.

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

Abstract

L'invention se rapporte à un procédé de production d'une machine de moulage par injection comprenant au moins un entraînement direct, et à une machine de moulage par injection produite au moyen de ce procédé. Les machines de moulage par injection selon l'art antérieur présentent l'inconvénient de comporter des moteurs normalisés volumineux difficiles à intégrer, ou de résulter de processus de production spécifiques, onéreux et non flexibles. Ainsi, l'objectif de cette invention est de créer un procédé de production d'une machine de moulage par injection qui soit simple et peu onéreux. A cet effet, la machine de moulage par injection selon l'invention, qui est pourvue d'au moins un entraînement direct, comprend un stator (12, 32, 62, 72) et un rotor (14, 34, 64, 74) qui peut être logé ou qui est logé de manière rotative dans ledit stator, et est produite de manière qu'un composant de la machine de moulage par injection comporte un logement exempt de stator (10, 30, 60) dont l'intérieur est dimensionné de façon que le stator (12, 32, 62, 72) puisse être logé dans ledit logement, un stator exempt de logement (12, 32, 62, 72) étant ultérieurement encastré dans le logement (10, 30, 60, 60', 86).
PCT/EP2005/055730 2004-11-04 2005-11-03 Machine de moulage par injection comprenant au moins un entrainement direct Ceased WO2006048436A1 (fr)

Applications Claiming Priority (2)

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DE200410053855 DE102004053855A1 (de) 2004-11-04 2004-11-04 Spritzgießmaschine mit mindestens einem Direktantrieb
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DE202013104357U1 (de) 2013-09-24 2015-01-19 Kuka Systems Gmbh Pressschweißvorrichtung
DE102024121787B3 (de) 2024-07-31 2025-09-18 Arburg Gmbh + Co Kg Antrieb für eine Formschließeinheit einer Spritzgießmaschine sowie Formschließeinheit oder Spritzgießmaschine mit solchem Antrieb

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EP0955145A2 (fr) * 1998-05-04 1999-11-10 Husky Injection Molding Systems Ltd. Améliorations à des machines à mouler
EP1182027A1 (fr) * 2000-08-09 2002-02-27 Reifenhäuser GmbH & Co. Maschinenfabrik Mécanisme d'entraínement pour une extrudeuse
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