• 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:

    公开号:AT509984A4
    申请号:T17632010
    申请日:2010-10-22
    公开日:2012-01-15
    发明作者:Werner Ing Kappelmueller；Stefan Eppich；Franz Ing Dirneder；Harald Ing Schimboeck
    申请人:Engel Austria Gmbh；
    IPC主号:
    专利说明:

    22/10/2010 11:04 + 43-512-583408 TORGGLER & HDEINGER 5. 0b / 21 1
    The invention relates to a lubricating device for an injection molding machine with at least one collecting container for lubricant, a supply line for lubricant z a lubricating parts and a drain line for lubricant from a lubrication point, wherein the lubricating device supplies at least two lubrication parts and to each of the at least two lubrication points a separate supply line runs, so that the lubrication points are supplied in parallel with lubricant and wherein each lubrication point leads away a drain line in which the lubricant runs in the direction of drain from the lubrication point.
    A generic lubricating device is apparent from DE 10 2008 024 514 B4. This lubrication system has the advantage of producing no oil film or oil mist in the area of the injection molding machine. By avoiding a permanent oil flow, energy can be saved and the wear of the seals of the lubricant circuit can be greatly reduced. Due to the parallel supply of the lubrication points a uniform distribution of the lubricant is achieved at the lubrication points, without having to ensure a consistently high pressure such as in a pressure circulation lubrication.
    In DE 10 2008 024 514 B4, the container into which the lubricant runs after lubrication of the lubricating parts is viewed in a vertical plane (section of FIG. 1 of DE 10 2008 024 514 B4) in the vertical direction below all lubricating parts. It has been found that this arrangement can lead to an undesirably high outflow of lubricant from the lubricating parts.
    The object of the invention is to prevent an undesirable high outflow of lubricant from the lubricating parts in a generic lubricating device.
    This object is achieved by a lubricating device having the features of claim 1.
    The biasing of the located in each drain line lubricant in the area of each lubrication point against the drainage direction prevents excessive Abfiießen lubricant from the lubricating parts. The bias voltage can be generated in many ways.
    A structurally very simple way of generating a preload exploits the principle of hydrostatic pressure in a column of liquid (although it is the 69127-36 / fr 22/10 2010 FR 1V.05 [SE / EM NR 6348] @ 006 22/10 / 2010 11:04 + 43-512-583408 TORGGLER & HOFINGER 07/21 p.
    2
    Lubricant is not water, it is nevertheless always referred to below as "hydrostatic pressure". If one arranges the collecting container for the running lubricant considered in the vertical direction higher than the highest lubrication point, which is connected via a drain line with the collecting container, resulting from the weight of the lubricant column in the collecting container or that line piece, which is located above the highest lubrication point , a sufficient hydrostatic pressure to generate the bias voltage. For example, an arrangement of the collecting container of about 10 centimeters above the highest lubrication point is sufficient. Often a deeper arrangement will be sufficient, this can be easily determined by experiments.
    Alternatively, instead of a collecting container, a collection tube with a sufficiently large diameter could be provided into which the discharge lines lead. In this case, the point of confluence in the vertical direction is considered to be higher than the highest Schmlerstelle, which is connected via a drain line to the manifold.
    Instead of making use of the hydrostatic principle, provision can be made for a limiting valve or a check valve to be arranged in each discharge line or in a collecting line into which the discharge lines terminate. Also by this measure, a sufficient bias voltage can be generated.
    It may be provided to arrange the valves directly at each lubrication point. Although this means increased design effort, but has the advantage that you can choose the extent of bias for each lubrication point individually.
    Of course, the above measures can also be provided in any combination. Apart from the measures according to the invention, the lubricating device may otherwise be formed as in DE 10 2008 024 514 B4.
    A preferred embodiment provides that the lubricant runs without pressure up to the bias against the drainage direction from the lubrication point via the drain line into the container. A major advantage is that not the entire lubricant circuit is under pressure. Specifically, although the supply of the lubricant to the lubrication points is carried out under a certain pressure, the lubricant recirculation takes place in the above sense, however, without pressure. The pressure reduction can be somewhere in the area of the supply line, the lubrication point or the drain line 22/10 2010 FR 11:05 [SE / EM NR 6348] @ j007 22/10/2010 11:04 + 43-512-583408 TORGGLER & HOFINGER 08/21 Ξ. • ♦ take place. Mainly, this will be done in the lubrication point, but can also be completely reduced in the supply line, if any pressure built up, as well as a pressureless supply is possible only by the action of gravity. Essentially, the pressure reduction depends on the diameter of the entire lubricant circuit. With decreasing diameter, the pressure is higher, whereas with increasing diameter of the pressure reduction takes place faster until the lubricant even runs without pressure in the lubricant circuit. According to the figures in the figures given later, the bearing gap forms this narrowest stiffness, whereby after passing through this lubrication point a substantial part of the pressure reduction takes place, since the drain line again has a larger diameter and thus allows a higher flow.
    According to one embodiment of the lubricating device, the lubrication point is located between a lever, preferably a toggle lever, and a bolt. These lubrication points are located in the area around the bolt, where the toggle lever are mounted (in Fig. 1, for example, six lubrication points are shown). Another application example may be the spindle lubrication.
    Furthermore, it is advantageous if the lubrication point is sealed by sealing rings. By this sealing no lubricant can escape from the joint, which is especially for the use of injection molding in clean rooms as mentioned of great advantage.
    It has proven to be particularly advantageous if the lubricating device is preferably provided exclusively for heavily loaded lubrication points of lever joints. This means that not only a lubricant seal can be present in an injection molding machine. Especially with highly stressed joint lubrication of injection molding machines, it is often necessary that the highly stressed areas get their own lubrication. In order to meet the various requirements, different and independent lubrication systems are advantageous in one and the same injection molding machine.
    Furthermore, it has proven to be particularly advantageous if the lubricant is a lubricating oil, fluid grease or the like. Fluid fats are particularly suitable for use as a lubricant at higher pressures. 22/10 2010 FR 11:05 [SE / EM NO 634S] 0008 22/10/2010 11:04 + 43-512-583408 TORGGLER & HOFINGER 09/21 • · * * * »: i» * »* · · ·» · · • * * * 4
    An advantageous embodiment of the lubricating device provides that the lubricating device is designed as circulation lubrication. The advantages of circulation lubrication are - as already mentioned - in the return of the lubricating oil and thus in its reuse and non-leakage of the lubricant from the lubrication points or joints. Such circulation lubrication may comprise a container which is designed as a lubricant reservoir, from which lubricant can be re-introduced into the circuit, for example by the pump.
    In this case, the lubricating device may have a lubricant filter in the drain line. Before reintroducing the lubricant into the lubricant circuit, this lubricant filter will filter the abrasion and residue left in the lubrication points out of the lubricant.
    A particular further embodiment provides that the lubricating device is designed as a consumption lubrication. However, this can only be compared indirectly with a conventional consumption lubrication since the lubricant does not escape from the joints. The lubrication points are sealed by sealing rings, with the drain points leading out of the lubrication points. In contrast to circulation lubrication, however, this lubricated lubricant is no longer reintroduced into the lubricant circulation in the case of consumption lubrication, but may for example have at least two containers, one serving as a lubricant reservoir and one as a collecting container for lubricant. From the lubricant reservoir, the lubricant is supplied via the Zuiaufleitung to the lubrication points and then collected in a collecting container. This collecting container replaced in this case, so to speak, the drip pan, which is in conventional injection molding machines under the entire injection molding machine, whereby an injection molding machine can be used even when used as a consumption lubrication in clean rooms.
    The Abiauffeitung can be designed as a manifold. Both in circulation lubrication as well as consumption lubrication, it is advantageous if the individual drain lines from the various lubrication points open into a manifold. With circulating lubrication, this manifold could flow directly into the lubricant pump in order to run through the cycle again.
    Protection is also desired for an injection molding machine having a lubricating device with the features mentioned so far. 22/10 2010 FR 11:05 [SE / EM NO 6348] ®0Ü9 22 / 1Θ / 2010 11:04 + 43-512-5B3408 TORGGLER & HOFINGER 10/21 Ξ. > * * · t · «« 5
    Further details and advantages of the present invention will be explained in more detail below with reference to the description of the figures with reference to the exemplary embodiments illustrated in the drawings.
    Figs. 1 to 5 show different embodiments of the invention, wherein the drawing sheet corresponds to a section through a vertical plane. Drawing elements that are located on the top or bottom of the Biatt are also located higher up and down in reality. FIG. 6 shows a side view of an injection molding machine with a lubricating device according to the invention.
    In Fig. 1, a partial injection molding machine 1 with the levers 9 and the bolt 10 and a lubricant circuit is shown partially schematically. In the container 2 is lubricant 4 (fluid grease, lubricating oil), which is pumped by the lubricant pump 8 in the supply line 5. Upper dosing 14, the lubricant 4 is supplied to the lubrication points 11 of the lever joints 7. Here, the circuit may be designed so that the lubricant 4 already zurückfiteßt after passing through a single lubrication point 11. A preferred embodiment, however, is the parallel passage through all preferably heavily loaded lubrication points 11 with subsequent unpressurized return of the lubricant 4 through the drain line 3. A continuous pressure in the entire Schmiermittelkreisiauf is not necessary. The pressure that is built up in the lubricant pump 8 and is necessary for the supply of lubricant is reduced mainly in the area of the lubrication points 11. Thus, the lubricant 4 is depressurized, i. without artificially produced pressure - air pressure and other natural forces can of course be present - through the drain line 3 back into a container 2. Fig. 1 further shows the lubricating device as a consumption lubrication, in which at least two containers 2 are provided.
    Unlike shown in the figures, the lubricant pump 8 is preferably arranged directly on that container 2, from which the lubricant 4 is removed,
    In Fig. 1, the drain lines 3 open into a common manifold, which in turn opens into a collecting container 2, which is angeordnat at a vertical position, which is higher than the highest of the lubricating point to be lubricated 11. 22/10 2010 FR 11: 05 [SE / EM NR 6348] @ 010 + 43-512-58340B 22/10/2010 11:04 I UKüCäLEK ϋ HUf-lNütK 8. 11/21
    6
    In Fig. 2, a similar arrangement is shown in which, however, an intermediate container 2 'is arranged in the specified position. The intermediate container 2 'is provided with an aerator 15. This ensures that only up to the level shown in Fig. 2 lubricant 4 is present as a contiguous column in the drain line 3 and the intermediate container 2 '. If one did not provide an aerator 15, then it could happen that the line leading from the intermediate container 2 'to the collecting container 2 also has a continuous lubricant column, which would only more than result in an undesirable suction effect.
    This principle is also based on the embodiment of FIG. 3. Here open the drain lines 3 as a manifold into a manifold 16, which has such a large diameter that in the manifold 16 no continuous Schmiemnittelsäufe more is given. For this purpose, the collecting container 2 is again provided with an aerator 15. In the embodiments 4, 5a and 5b, the bias is effected by the arrangement of valves. 4, a limiting valve 17 is provided as a valve. According to Fig. 5a, a check valve 18 is provided as a valve. In the embodiment of FIG. 5b, each lubrication point 11 is assigned a valve 18 directly. This allows an individual vote at each lubrication point 11 done. The principle of Fig, 5b would of course be feasible with check valves 18, which is expensive. In Fig, 6, an entire mold clamping unit of an injection molding machine 1 is shown in side view, wherein a plurality of lever joints 7 can be seen, which are formed by the lever 9 and the bolts 10. According to the invention, the collecting container 2 is arranged above the highest lubricating point 11. In this exemplary embodiment, the collecting container 2 is arranged on an end plate of the pouring unit of the injection molding machine 1.
    Innsbruck, 22 October 2010 22/10 2010 FR 11:05 [SE / EM NR 6348] @ 011
    权利要求:
    Claims (14)
    [1]
    + 43-512-583408 22/10/2010 11:04 12/21 TDRGGLER 8 HOFINGER ························································································· Lubricating device for an injection molding machine (1) having at least one lubricant collection unit (4), a lubricant supply line (4) to a lubrication point (11) and a lubricant discharge line (4) from a lubrication point (11) the lubricating device supplies at least two lubrication points (11) and to each of the at least two lubrication points (11) a separate supply line (5) runs, so that the lubrication points (11) can be supplied in parallel with lubricant (4) and of each lubrication point (11) Drain line (3) leads away, in which the lubricant (4) runs in the direction of flow from the lubrication point (11), characterized in that in each drain line (3) located lubricant (4) in the region of each lubrication point (11) against the flow direction is biased t.
    [2]
    2. Lubricating device according to claim 1, characterized in that the discharge lines (3) preferably via a collecting line in a collecting container (2) open, considered in the vertical direction is higher than the highest lubrication point (11) via a drain line (3 ) is connected to the Sammeibehältnis (2).
    [3]
    3. Lubricating device according to claim 1 or 2, characterized in that the drain lines (3) preferably via a manifold into a manifold (16) open, the confluence point viewed in the vertical direction is higher than the highest lubrication point (11) over a drain line (3) is connected to the manifold (16),
    [4]
    4. Lubricating device according to one of claims 1 to 3, characterized in that in each drain line (3) or in a collecting line, in which the drain lines (3) open, a limiting valve (17) or a check valve (18) is arranged.
    [5]
    6. Lubricating device according to claim 4, characterized in that the valves (17, 18) are arranged directly at each lubrication point (11). 69127-36 / fr 22/10 2010 FR 11:05 [SE / EM HR 6348] @ 012 22/10/2010 11:04 + 43-512-583408 TORGGLER & HÜFIHGER * "** ** # * 13/21 ·» «» · 2
    [6]
    6. Lubricating device according to one of claims 1 to 5, characterized in that in the drain line (3), the lubricant (4) to the bias against the flow direction depressurized in the collecting container (2) runs.
    [7]
    7. Lubricating device according to one of claims 1 to 6, characterized in that the lubrication point (11) between a lever (9), preferably a toggle lever, and a Boizen (10).
    [8]
    8. Lubricating device according to one of claims 1 to 7, characterized in that the lubricating point (11) is sealed by sealing rings (12).
    [9]
    9. Lubricating device according to one of claims 1 to 8, characterized in that the lubricating device is preferably provided exclusively for highly loaded lubrication points (11) of the lever joints (7).
    [10]
    10. Lubricating device according to one of claims 1 to 9, characterized in that the lubricant (4) is a lubricating oil, fluid grease or the like.
    [11]
    11. Lubricating device according to one of claims 1 to 10, characterized in that the lubricating device is designed as a circulation lubrication.
    [12]
    12. Lubricating device according to one of claims 1 to 10, characterized in that the lubricating device is designed as a consumption lubrication.
    [13]
    13. Lubricating device according to one of claims 1 to 12, characterized in that the drain line (3) is designed as a manifold.
    [14]
    14. Injection molding machine (1), characterized by a lubricating device according to one of claims 1 to 13. Innsbruck, 22 October 2010 22/10 2010 FR 11:05 [SE / EM NR 6348] @ 013
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102008024514B4|2007-05-23|2010-10-07|Engel Austria Gmbh|lubricator|EP3241661A1|2016-05-04|2017-11-08|Wittmann Battenfeld GmbH|Closing unit of a plastic processing machine, in particular an injection moulding machine|JP3420881B2|1996-02-19|2003-06-30|株式会社日本製鋼所|Lubrication method and lubrication device for drive device of injection molding machine|
    JP2004230616A|2003-01-29|2004-08-19|Fanuc Ltd|Injection molding machine|
    DE102007044524A1|2007-09-18|2009-03-19|Man Diesel Se|Device and method for cleaning lubricants and lubricant circuit|JP2019177620A|2018-03-30|2019-10-17|住友重機械工業株式会社|Injection molding machine|
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    法律状态:
    优先权:
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    AT17632010A|AT509984B1|2010-10-22|2010-10-22|LUBRICATING DEVICE FOR AN INJECTION MOLDING MACHINE|AT17632010A| AT509984B1|2010-10-22|2010-10-22|LUBRICATING DEVICE FOR AN INJECTION MOLDING MACHINE|
    DE201110110825| DE102011110825A1|2010-10-22|2011-08-16|Lubricating device for an injection molding machine|
    CN201110281008.6A| CN102452157B|2010-10-22|2011-09-21|Lubricating device for injection molding machine|
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