• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Vertically closing closing unit for a forming machine with a movable platen (2) and at least one motor (3) for moving the movable platen (2) relative to a machine bed (4), wherein at least two separate conversion devices (5) for implementing output movements of at least an electric motor (3) in clamping plate movements of the movable platen (2) and a synchronization device (6) for synchronizing the platen movements and / or the driven movements are provided.
    公开号:AT517261A1
    申请号:T322/2015
    申请日:2015-05-21
    公开日:2016-12-15
    发明作者:Herbert Dipl Ing Zeidlhofer；Günter Schott
    申请人:Engel Austria Gmbh；
    IPC主号:
    专利说明:

    The present invention relates to a vertical clamping unit for a molding machine having the features of the preamble of claim 1.
    Under shaping machines can be understood injection molding machines, transfer molding, pressing and the like.
    DE 198 48 391 A1 discloses a closing unit for a rubber injection press. This has a vertically closing closing unit, wherein an electric motor is provided for moving the movable platen relative to a machine bed.
    The disadvantage here is that the forces applied by the electric motor for moving the movable platen are introduced off-center in the same. In particular, with larger closing units, this creates the problem that the plate parallelism or a parallelism of the tool halves mounted on the clamping plates is not given to a sufficient extent.
    The object of the present invention is to provide a vertically closing closing unit with a rapid stroke, wherein improved plate parallelism can be achieved, at least for larger closing units.
    This object is achieved with the features of claim 1.
    This is done by at least two separate conversion devices for implementing output movements of the at least one motor in Aufspannplattenbewegungen the movable platen and a synchronization device for synchronizing the Aufspannplattenbewegungen and / or the driven movements.
    By splitting the introduction of force during the rapid stroke, it can be achieved that an effective introduction of force is centered in relation to the movable platen. Tipping moments, which negatively affect plate parallelism, can thereby be avoided.
    Further advantageous embodiments of the invention are defined in the dependent claims.
    It can be provided that the at least one motor is an electric motor, preferably an electric rotary drive, and particularly preferably a hollow shaft motor. Closing units with electric rapid stroke are significantly better regulated or controlled.
    Preferably, at least two, more preferably, four motors may be provided. In particular, in conjunction with two or four conversion devices, this may result in a particularly simple design, since then each conversion device is associated with exactly one electric motor. If common electric motors are used in the form of rotary drives, it can be provided that the at least two conversion devices are designed to implement a rotating output movement in a linear platen movement. Particularly preferred examples of such conversion devices may be spindle drives and / or rack and pinion drives.
    The synchronization device can be embodied electrically or mechanically-for example using a belt drive.
    In the case of an electronic synchronization device, it is particularly preferable to provide a control or regulating device which is designed to use kinematic parameters of one motor as setpoint values for the regulation or control of others-preferably all others-of the at least two motors.
    In a particularly preferred embodiment, at least one - preferably two - hydraulic cylinder for moving the movable platen relative to the machine bed may be provided. The hydraulic cylinders each form a combination of motor and conversion device. By such a hybrid construction, the advantages of hydraulic and electronic Eilhüben can be used equally. These would be the good control or controllability of electric drives and the relatively simple design of hydraulic drives.
    If an additional hydraulic rapid lift is provided, it may be advantageous for a chamber of the at least one hydraulic cylinder, in the pressurization of which a force directed against the weight force of the movable platen, to act, to be connected to a pressure accumulator. This represents a particularly energy-saving and at the same time simple construction.
    In the case of an additional hydraulic rapid lift, it can further be provided that the at least two conversion devices are effective only over part of a travel path of the at least one hydraulic cylinder. In particular, in connection with an embodiment in which the part of the travel path, over which the at least two conversion devices are effective, includes a closed position of the clamping unit, this can be a particularly inexpensive construction. For here relatively short implementation devices, in particular spindles or racks, are used, while the plate parallelism over the prior art is positively influenced. The concept of having the conversion devices act only over part of the travel distance of the express stroke, however, can be used not only in hydraulic rapid strokes but also in other rapid strokes.
    At least one spar passing through the movable platen and / or a fixed platen may be provided, with four bars being preferred. Furthermore, a guide system for guiding the movable platen can be provided. The guide system can make use of the spars, for example by the spars themselves serving to guide or by other guide elements, such as guide rails are attached to the spars.
    Serve the spars themselves to guide bushes can be provided in the movable platen, in which run the spars. For a particularly simple design, at least one - preferably four-pressure pad may be provided, by means of which a closing force on the movable
    Mold clamping plate is exercisable. The pressure pads can preferably be designed hydraulically.
    The at least one spar can serve as a pull rod when exerting the closing force, wherein the at least one pressure pad is preferably arranged on a side facing away from the movable platen one side of a fixed platen. This may represent a particularly simple embodiment.
    There may be provided a locking device, by means of which the at least one spar can be locked to the movable platen. The locking device may be arranged together with the at least one pressure pad, for example on the same platen. Pressure pad and locking should also be considered as arranged in common, if they are arranged on different sides of the same platen.
    An energy-saving operation, it may further be beneficial if the at least one electric motor when lowering the movable platen is operated as a generator and an energy storage is provided for storing the energy generated by the generator operation of the electric motor.
    The energy storage device can be designed electrically, hydraulically or mechanically / kinetically (example: flywheel).
    Protection is also desired for a molding machine with a clamping unit according to the invention.
    Further advantages and details of the invention will become apparent from the figures and the associated description of the figures. Showing:
    1 shows a first embodiment of a closing unit according to the invention in a sectional view
    Figures 2a, 2b, a second embodiment of an inventive
    Closing unit in a sectional view and a plan view as well
    3 shows a third embodiment of a closing unit according to the invention in a sectional view.
    The embodiments have the following in common:
    They have a movable platen 2 and a fixed platen 12, which is mounted on a machine bed 4. By the movable platen 2 and the fixed platen 12 four bars 8 are guided (this is done by means of bushings, which are arranged in through holes of the movable and the fixed platen 2, 12). The movable platen 2 can be locked by means of locking devices 11 with respect to the spars 8. This is done by means of split nuts, which have an inner profile. If the nuts are closed, the inner profile engages in an outer profile of the spars 8, resulting in a positive connection. The pressure pads 9 are mounted on the side of the fixed platen 12, which faces away from the movable platen 2. These pressure pads are hydraulically designed. The piston parts are connected to the spars 8 or formed by them. Characterized in that the bars 8 are also movably mounted with respect to the fixed platen 12, a Schließkraftbeaufschlagung can take place by pressing the pressure pad 9. The spars 8 serve as tie rods which transmit the closing force to the movable platen 2. The mentioned locking nuts serve to transfer the force from the nuts to the movable platen 2.
    This is a preferred basic construction as it is particularly simple and efficient. Of course, the invention can also be used in other closing units, such as closing units with differently arranged pressure pads or presses.
    In the embodiment of Figure 1 four conversion devices 5 are provided. (Due to the sectional view only two of them are visible.) This of course also applies to spars 8, electric motors 3, pressure pad 9, etc.) The conversion devices 5 are designed as spindle drives. They are each driven by an electrically running motor 3. The motors 3 are formed in this case as a hollow shaft motors. This represents a particularly space-saving design.
    The synchronizer 6 in this case is formed as a control device connected to all the motors 3 made electrically. One of the motors 3 functions as a so-called master and the others as so-called slaves. In this case, kinematic parameters of the electrically executed motor 3, which is the master, are used as setpoint variables for the control or regulation of those motors 3 which are the slaves.
    FIGS. 2 a and 2 b show an embodiment with two conversion devices 5 and two hydraulic cylinders 7 each driven by electrically driven motors 3. As can be seen from Figure 2b, these are each arranged diagonally opposite each other. Figure 2a is a sectional view taken along the plane A in Figure 2b (this applies analogously to Figures 1 and 3).
    It can be provided to connect the lower chambers of the hydraulic cylinder 7 with a pressure accumulator.
    The synchronization device 6 is not shown in these figures for the sake of clarity. Of course, it is still present to synchronize the motors 3 and the hydraulic cylinders 7 together to produce the desired plate parallelism.
    Figure 3 shows an embodiment in which two hydraulic cylinders 7 and two conversion devices 5 are provided, wherein the conversion devices 5 are effective only over a part of the travel of the hydraulic cylinder 7. When lowering the movable platen by means of the hydraulic cylinder 7, the spindles of the conversion devices 5 reach the corresponding nuts, whereby only in the last section of the travel plate parallelism can be controlled or controlled by means of the conversion devices 5 and their respective electrically driven motors 3. This represents a particularly cost-effective variant, because only relatively short spindles must be used. Nevertheless, the positive effect of the invention on the plate parallelism is achieved, since it can be influenced by the electrically driven motors 3 at the crucial time, that is, when the tool halves approach.
    It should be noted that not always exactly four Ehhubantriebe - electric or hydraulic - must be necessary. Depending on the requirements, two, three or even more than four may suffice or be necessary.
    Furthermore, the synchronization device may comprise measuring devices which directly measure the plate parallelism and whose measured values are used for synchronization.
    Innsbruck, May 19, 2015
    权利要求:
    Claims (24)
    [1]
    claims
    1. vertically closing closing unit for a molding machine with a movable platen (2) and at least one motor (3) for moving the movable platen (2) relative to a machine bed (4), characterized by at least two separate conversion devices (5) for the implementation of Downward movements of the at least one electric motor (3) in platen movements of the movable platen (2) and a synchronization device (6) for synchronizing the Aufspannplattenbewegungen and / or the driven movements.
    [2]
    2. Closing unit according to claim 1, characterized in that the at least one motor (3) is an electric motor, preferably an electric rotary drive and more preferably a hollow shaft motor.
    [3]
    3. Closing unit according to claim 1 or 2, characterized in that at least two, preferably four, motors (3) are provided.
    [4]
    4. Closing unit according to one of claims 1 to 3, characterized in that four conversion devices (5) are provided.
    [5]
    5. Closing unit according to one of claims 1 to 4, characterized in that the at least two conversion devices (5) are designed to implement a rotating output movement in a linear platen movement.
    [6]
    6. Closing unit according to claim 5, characterized in that the at least two conversion devices (5) each have a spindle drive and / or a rack and pinion drive.
    [7]
    7. Closing unit according to one of claims 1 to 6, characterized in that the synchronization device (6) is carried out electronically.
    [8]
    8. Closing unit according to claim 7 and claim 3, characterized in that a control or regulating device is provided, which is adapted to kinematic parameters of a motor (3) as setpoints for the control or control of others - preferably all others - the at least two To use motors (3).
    [9]
    9. Closing unit according to one of claims 1 to 8, characterized in that the synchronization device (6) mechanically - preferably using a belt drive - is executed.
    [10]
    10. Closing unit according to one of claims 1 to 9, characterized in that at least one - preferably two - hydraulic cylinder (7) for moving the movable platen (2) relative to the machine bed (4) is provided.
    [11]
    11. Closing unit according to claim 10, characterized in that a chamber of the at least one hydraulic cylinder (7), in the pressurization acts against the weight of the movable platen (2) force is connected to a pressure accumulator.
    [12]
    12. Closing unit according to claim 10 or claim 11, characterized in that the at least two conversion devices (5) only over a part of a travel path of the at least one hydraulic cylinder (7) are effective.
    [13]
    13. Closing unit according to one of claims 1 to 12, characterized in that more than two conversion devices (5) are provided, wherein at least two of the conversion devices (5) only over a part of a travel path of the other conversion devices (5) are effective.
    [14]
    14. Closing unit according to claim 12 or 13, characterized in that the part of the travel path, over which the at least two conversion devices (5) are effective, includes a closed position of the closing unit (1).
    [15]
    15. Closing unit according to one of claims 1 to 14, characterized in that at least one movable platen (2) and / or a fixed platen (12) at least partially passing Holm (8) is provided, preferably four spars (8) are.
    [16]
    16. Closing unit according to one of claims 1 to 15, characterized in that a guide system for guiding the movable platen (2) is provided.
    [17]
    17. Closing unit according to claim 16, characterized in that the guide system has at least one spar (8) and / or at least one - preferably at least one spar (8) fixed - guide rail.
    [18]
    18. Closing unit according to one of claims 1 to 17, characterized in that at least one - preferably four - pressure pad (9) is provided, by means of which a closing force on the movable platen (2) is exercisable.
    [19]
    19, closing unit according to claim 18, characterized in that the at least one spar (8) when exerting the closing force serves as a tie rod, wherein the at least one pressure pad (9) preferably on one of the movable platen (2) facing away side of a fixed platen (12) is arranged.
    [20]
    20. Closing unit according to claim 15, characterized in that at least one locking device (11) is provided, by means of which the at least one spar (8) with the movable platen (2) is lockable.
    [21]
    21. Closing unit according to claim 18 and 20, characterized in that the at least one pressure pad (9) and the at least one locking device (11) are arranged together or separately from each other.
    [22]
    22. Closing unit according to claim 2, characterized in that the at least one electric motor when lowering the movable platen (2) is operated as a generator and an energy storage is provided for storing the energy generated by the generator operation of the electric motor.
    [23]
    23. Closing unit according to claim 22, characterized in that the energy store is designed electrically or hydraulically.
    [24]
    24. Forming machine with a clamping unit according to one of claims 1 to 23. Innsbruck, 19 May 2015
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    同族专利:
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    CN106273292A|2017-01-04|
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    CN106273292B|2020-02-11|
    DE102016006108A1|2016-11-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    AT518646B1|2016-05-24|2017-12-15|Engel Austria Gmbh|Vertical clamping unit and method of operating the same|JPH0229969A|1988-07-18|1990-01-31|Matsushita Electric Ind Co Ltd|Cassette loader|
    JPH08229969A|1995-02-24|1996-09-10|Nikko Tokki Kk|Pressing apparatus|
    DE19848391A1|1998-10-21|2000-04-27|Rucks Maschinenbau Gmbh|Vertical rubber injection molding press comprisesL-shaped frame with vertical linear tool slide guides|
    JP4748891B2|2001-07-25|2011-08-17|東洋機械金属株式会社|Injection molding machine|
    JP4267479B2|2004-02-18|2009-05-27|東洋機械金属株式会社|Molding device for injection molding machine|
    CN2918031Y|2006-06-22|2007-07-04|顺德职业技术学院|Straight driving injection machine matched molds apparatus|
    CN201195382Y|2008-03-03|2009-02-18|香港理工大学|Vertical miniature plastic jetting-moulding machine|
    AT507717A1|2008-12-16|2010-07-15|Engel Austria Gmbh|Locking unit for an injection molding machine|
    CN202540665U|2012-01-31|2012-11-21|上海积健精密机械有限公司|Double-plate die-locking mechanism|
    AT513988B1|2013-02-18|2015-02-15|Engel Austria Gmbh|Closing unit of an injection molding machine|AT521696B1|2019-02-01|2020-04-15|Engel Austria Gmbh|Drive device for a molding machine|
    CN111516230B|2019-02-01|2022-02-22|恩格尔机械有限公司|Drive device for a molding machine and molding machine having a drive device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA322/2015A|AT517261B1|2015-05-21|2015-05-21|Vertical clamping unit for a molding machine|ATA322/2015A| AT517261B1|2015-05-21|2015-05-21|Vertical clamping unit for a molding machine|
    DE102016006108.1A| DE102016006108A1|2015-05-21|2016-05-18|Vertical clamping unit for a molding machine|
    CN201610626951.9A| CN106273292B|2015-05-21|2016-05-20|Closing unit for a molding machine and molding machine|
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