• 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:
    It is a device for injecting crosslinkable polymers in a mold space (1) with a nozzle opening (5) forming a nozzle body (3), with a nozzle body (3) passing through the nozzle needle (4) which closes between the outlet opening closing position and a through a stop (11) for the opening stroke limited open position is axially displaceable, and with an actuator (15) for the stop (11) with a transversely to the axis of the nozzle needle (4) extending adjusting axis (17) described. In order to provide advantageous construction conditions, it is proposed that the stop (11) is pivotally mounted about an axis of rotation (16) running perpendicular to the axis of the nozzle needle (4) and perpendicular to the adjusting axis (17) of the adjusting drive (15) and adjacent to an abutment surface (16). 13) for the opening stroke an angular offset coupling surface (18) for the actuator (15) and that the stop surface (13) and the coupling surface (18) of the stopper (11) with their respective mating surfaces (14, 19) a cam control in the sense of from the rotation angle of the stop (11) independent, constant transmission ratio between the travel of the actuator (15) and the stop-related adjustment of the opening stroke to limit the open position of the nozzle needle (4) form.
    公开号:AT518052A4
    申请号:T50415/2016
    申请日:2016-05-06
    公开日:2017-07-15
    发明作者:Ebner Willibald；Stangl Peter
    申请人:Ebner Tec Gmbh；Ebner-Tec Solution Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a device for injecting crosslinkable polymers in a mold space with a nozzle body forming an outlet opening, with a nozzle needle passing through the nozzle body, which is axially displaceable between a closing position closing the outlet opening and an open position bounded by a stop for the opening stroke, and with an actuator for the stop with a transverse to the axis of the nozzle needle adjusting axis.
    In injection molds with nozzles, which are provided with a needle valve, it is known (EP 1 477 292 A1), the open position of the nozzle needle and thus the flow rate of flowing from the outlet opening of the nozzle body into the mold space and there crosslinking polymers in adaptation to the respective Requirements to perform adjustable. For this purpose, a limit to the opening stroke of the nozzle needle stop in the form of a wedge or cone is provided, which is displaced perpendicular to the adjusting axis of the nozzle needle by an adjusting drive, whereby the formed by the wedge or conical surface boundary of the opening stroke for the nozzle needle corresponding to the respective Set requirements. It is advantageous that a simple access for a stop adjustment by hand is created by the transverse to the adjustment axis of the nozzle needle actuator for the wedge-shaped or conical stop. A disadvantage is in addition to the design effort, however, that the required for an accurate adjustment of the open position of the nozzle needle, tight tolerances can hardly be met. Similar disadvantages also occur in another known needle valve nozzle (EP 2 952 326 A1), in which the stop for limiting the opening stroke is formed by a ball whose displacement in the direction of the axis of the nozzle needle is provided with an actuating drive extending transversely to the nozzle axis. which acts on a displaceably mounted in a deflection guide row of balls whose remote from the actuator end ball forms the stop.
    The invention is thus based on the object, the setting of the opening stroke of a needle valve nozzle in such a way that with comparatively simple design measures an advantageous, accurate limitation of the opening stroke of the nozzle needle can be ensured.
    Starting from a device of the type described above, the invention solves the task by the fact that the stop is pivotally mounted about an axis perpendicular to the axis of the nozzle needle and perpendicular to the adjusting axis of the actuator axis of rotation and next to a stop surface for the opening stroke an angular offset coupling surface for the actuator and that the stop surface and the coupling surface of the stop with their respective mating surfaces form a cam control in the sense of a rotational angle of the stop independent, constant transmission ratio between the travel of the actuator and the stop-related adjustment of the opening stroke to limit the open position of the nozzle needle.
    By providing a stop which is pivotally mounted about an axis perpendicular to the axis of the nozzle needle and perpendicular to the adjusting axis of the actuator pivot axis, simple design requirements for the stop adjustment are created. It only needs to be considered that due to the rotational movement of the stopper even with matching travel of the stop surface and the angular offset coupling surface in the circumferential direction of this displacement of the stop and coupling surfaces determining travel of the actuator in no linear relationship to a derived from the stop surface travel in the direction the nozzle needle axis is.
    Both the linear adjusting movement of the actuating drive and the rotational movement of the stop derived therefrom via the coupling surface and the rotational movement of the stop surface and the linear movement derived therefrom for limiting the opening stroke are linked to one another by angular functions. This means that between the stop surface and the coupling surface on the one hand and cooperating with these surfaces mating surfaces on the other hand, a cam control must be effective, which ensures independent of the rotation angle of the stop, constant translation between the travel of the actuator and the travel to limit the opening stroke. For this purpose, the coupling surface and the stop surface with the actuator and the nozzle needle associated mating surfaces cooperating cams form, but this is not mandatory, because even the mating surfaces can represent cam surfaces. It is only important that due to the mutual displacement of the interacting surfaces of the linear travel of the actuator pulls a direct proportional this displacement in the direction of the nozzle needle axis for limiting the open position of the nozzle needle, which simply due to the geometric dependencies on a cam control is to realize.
    Particularly simple handling conditions arise when the cam control formed by the stop surface and the coupling surface of the stop has a gear ratio 1 between the travel of the actuator and the stop-related adjustment of the opening stroke to limit the open position of the nozzle needle, so that the travel of the actuator always the way of adjustment corresponds to the opening stroke.
    Prerequisite for an accurate adjustment of the open position of the nozzle needle is that the actuator provided for this purpose can be operated without play. To meet this requirement with simple structural means, the actuator for the stop may comprise a spring-loaded spindle drive, which can be operated both manually and by motor. To check the travel of the actuator for the attack of the actuator can be connected in an advantageous manner to a dial gauge, with the help of the displacement of the open position of the nozzle needle can be read directly.
    In the drawing, the subject invention is shown, for example, and indeed a device according to the invention for injecting crosslinkable polymers in a mold space is shown in sections in the region of an injection nozzle in a schematic section along the nozzle axis.
    The illustrated apparatus for injecting crosslinkable polymers in a mold cavity 1 of an injection mold 2 usually has a plurality of injection nozzles whose nozzle body 3 receive a nozzle needle 4, which close in the closed position opening into the mold cavity 1 outlet opening 5, but this outlet opening 5 in the drawn open position release so that the supplied via distribution channels 6 polymer can be injected in a predetermined by the open position of the nozzle needle 4 injection rate in the mold space 1.
    For adjusting the nozzle needle 4, a Betätigungsstrieb 7 is provided, which is formed according to the illustrated embodiment as a positioning cylinder 8, which is not mandatory. The needle shaft 9 is connected in the sense of a piston rod with the actuating piston 10, which carries on the side facing away from the needle shank 9 a bottom 12 of the actuating cylinder 8 passing, cooperating with a stop 11 stamp 12. The punch 12 is supported on a stop face 13 of the stop 11 with a counter-surface 14, so that when the actuating piston 10 is acted upon accordingly, the opening stroke of the nozzle needle 4 is limited by the stop 11.
    To set the limit of the opening stroke of the stop 11 can be displaced by means of an actuator 15. For this purpose, the stop 11 is rotatably mounted about an axis 16 which is perpendicular to the axis of the nozzle needle 4 and perpendicular to the adjusting axis 17 of the actuator 15. Since the stop 11 is supported with a coupling surface 18 on a counter surface 19 of the actuator 15, an adjustment of the actuator 15 causes a rotation of the stopper 11 to the
    Because of the rotational movement of the stop 11 on the one hand with respect to the linear actuator 15 and on the other hand with respect to the linearly guided punch 12 would be between the travel of the actuator 15 and by the stop adjustment conditional travel of the punch 12 adjust a function of the rotation angle changing gear ratio, if not due to the cam shape of the stop surface 13 and the clutch surface 18 the adjusting movements a compensating motion is superimposed, which is independent of the respective rotation angle of the stop 11, constant and direct proportional translation between the travel of the actuator 15 and the resulting travel of the punch 12 leads. By the geometric dependencies taking into account cam control between the coupling surface 18 and the counter surface 19 of the actuator 15 and / or between the stop surface 13 and the counter surface 14 of the punch 12 is thus achieved that by means of the actuator 15 due to the constant linear dependence of the travel of the opening stroke for the nozzle needle 4 can be adjusted easily and accurately, especially when a gear ratio of 1 is chosen between the control paths, because in this case the travel of the actuator 15 corresponds to the stop-related travel of the punch 12.
    If the actuator 15 is designed as a spindle drive 20, which is loaded to avoid play by a spring 21, so simple construction conditions are linked with a precise stop adjustment in compliance with close tolerances for the open position of the nozzle needle 4. For reading the opening stroke limiting stop position, a dial gauge 22 connected to the actuator 15 may be provided. If the spindle drive 20 is provided, for example, with an Allen key 23, then the respectively required open position of the nozzle needle 4 can be set by means of an Allen key on the basis of the dial gauge 22 in a simple manner by hand.
    权利要求:
    Claims (4)
    [1]
    claims
    1. An apparatus for injecting crosslinkable polymers in a mold space (1) with a nozzle body (3) forming an outlet opening (5), with a nozzle needle (4) passing through the nozzle body (3), between a closed position closing the outlet opening and one through a Stop (11) for the opening stroke limited open position is axially displaceable, and with an actuator (15) for the stop (11) with a transversely to the axis of the nozzle needle (4) extending adjusting axis (17), characterized in that the stop (11 ) about a perpendicular to the axis of the nozzle needle (4) and perpendicular to the adjusting axis (17) of the adjusting drive (15) extending pivot axis (16) is pivotally mounted and next to a stop surface (13) for the opening stroke an angular offset coupling surface (18) for the Actuator (15) and that the stop surface (13) and the coupling surface (18) of the stop (11) with their respective mating surfaces (14, 19) a cam control in the sense of a constant transmission ratio between the travel of the actuating drive (15) and the stop-related adjustment of the opening stroke for limiting the open position of the nozzle needle (4), independent of the angle of rotation of the stop (11).
    [2]
    2. Device according to Claim 1, characterized in that the cam control formed by the abutment surface (13) and the coupling surface (18) of the abutment (11) has a gear ratio 1 between the travel of the adjusting drive (15) and the stop-related adjustment of the opening stroke for limiting the open position of the nozzle needle (4).
    [3]
    3. Apparatus according to claim 1 or 2, characterized in that the adjusting drive (15) for the stop (11) comprises a spring-loaded spindle drive (20).
    [4]
    4. Device according to one of claims 1 to 3, characterized in that the adjusting drive (15) for the stop (11) to a dial gauge (22) is connected.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP3084277B1|2020-01-08|Hydraulic valve device
    EP3012445A1|2016-04-27|Control device for a combustion engine
    EP2906815B1|2019-06-19|Valve for a pump
    DE3245571A1|1984-06-20|Needle shut-off nozzle for injection moulds
    DE102011006878B4|2013-03-14|door closers
    DE1778952C3|1979-07-05|Hydraulic mold clamping device for a plastic injection molding machine
    DE202014103153U1|2014-10-17|Device for injection molding plastic materials
    EP3241659B1|2018-12-05|Device for injecting crosslinkable polymers into a moulding chamber
    DE102008039336A1|2010-02-25|Injection mold with lockable hot runner nozzle
    DE102017108963A1|2017-11-02|Method and device for injection molding plastic materials
    DE202014103152U1|2014-10-20|Device for injection molding plastic materials
    EP2004382A1|2008-12-24|Needle valve nozzle
    DE102011006877B4|2015-06-11|door closers
    CH710047B1|2019-02-28|Closure with a signal indicating the open state signal element.
    WO2012055597A1|2012-05-03|Control valve for a cam shaft adjuster
    EP2501921B1|2013-08-28|Positioning device for converting a rotary motion into a linear motion
    DE102015219912B3|2017-04-06|Piezo injector for fuel injection
    DE1104684B|1961-04-13|Injection nozzle for thermoplastics processing injection molding machines
    DE102011080054A1|2013-01-31|Injection head and ejector of an injection device
    DE102004042728A1|2006-03-09|Dosing head for metering liquid to pasty metered materials comprises a feed line, an inlet valve, an outlet valve, a dosing chamber arranged between the valves and a plunger for conveying metered material
    DE102015208145A1|2016-11-03|Nozzle for an injection molding device
    DE202010014740U1|2010-12-23|Needle valve nozzle for injecting liquid plastic material
    DE102019203904A1|2020-09-24|Double flap valve for a liquid filter device
    DE102016120872A1|2018-05-03|dosing block
    DE102018217011A1|2020-04-09|Actuator element
    同族专利:
    公开号 | 公开日
    AT518052B1|2017-07-15|
    EP3241659A1|2017-11-08|
    EP3241659B1|2018-12-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3488810A|1967-03-17|1970-01-13|Jobst U Gellert|Valve-gated mold construction|
    JPS59169827A|1983-03-17|1984-09-25|Mitsubishi Heavy Ind Ltd|Valve gate device of injection molding metal die|
    EP0832729A1|1996-09-30|1998-04-01|EUROTOOL Beheer B.V.|Valve-gated injection moulding device|AT524055B1|2021-01-12|2022-02-15|Stadler Formenbau Gmbh|DEVICE FOR INJECTING CROSSLINKABLE POLYMERS|US5916605A|1996-09-27|1999-06-29|Dynisco Hotrunners, Inc.|Valve actuated injection molding apparatus|
    FR2795993B1|1999-07-06|2001-09-28|Delachaux Sa|PLASTIC MATERIAL INJECTION DEVICE IN A MOLDING IMPRESSION|
    JP5104543B2|2008-05-23|2012-12-19|トヨタ車体株式会社|Injection molding machine|
    法律状态:
    2021-08-15| PC| Change of the owner|Owner name: STADLER FORMENBAU GMBH, AT Effective date: 20210629 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50415/2016A|AT518052B1|2016-05-06|2016-05-06|Device for injecting crosslinkable polymers into a mold space|ATA50415/2016A| AT518052B1|2016-05-06|2016-05-06|Device for injecting crosslinkable polymers into a mold space|
    EP17159634.9A| EP3241659B1|2016-05-06|2017-03-07|Device for injecting crosslinkable polymers into a moulding chamber|
    [返回顶部]