• 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:
    The invention provides a universal hydraulic press for injection-moulding where two separate clamping units, each with a respective mould, are arranged in parallel and are adapted to be brought into alternate engagement with each of two injection units in which a different moulding material may be housed. One of the moulding materials may be injected into one of the moulds following which indexing movement brings the other injection unit into register with that mould for injecting the second material onto the first.
    公开号:SU753351A3
    申请号:SU782586405
    申请日:1978-02-24
    公开日:1980-07-30
    发明作者:Дешаван Жак
    申请人:За витель；
    IPC主号:
    专利说明:

    one
    The invention relates to injection molding devices for parts made from several thermoplastic pressing, thermosetting materials or elastomers, and can be used in the polymer industry.
    A device for molding polymeric materials under pressure is known, comprising a mold with a closing mechanism and two injection assemblies arranged perpendicular to each other 1.
    A disadvantage of the known device consists in its considerable dimensions, which is due to the perpendicular arrangement of the injection units that feed various materials into the mold.
    The closest to the technical essence of the invention is a device for pouring iodine pressure polymeric materials containing at least two forms and two injection units, each equipped with a hopper for loading a material different from the material in the bunker of another injection unit, and a closing mechanism for one of the forms, mounted on the bed 2.
    A disadvantage of the known device is that the plate on which the forms are located, due to the large diameter, has considerable elasticity, which makes it difficult
    centering the molds relative to the injection units when the plate is rotated and reduces the reliability of the device.
    In addition, the performance of the known device is insufficient, since in the manufacture of one product both forms are used consistently.
    The purpose of the invention is to improve the reliability and performance of the device when
    10 manufacturing products with a middle part of one material and external parts from another.
    The goal is achieved by the fact that in a device for injection molding polymeric materials containing at least two molds and two injection units, each equipped with a hopper for loading a material different from the material in the bunker of another injection unit, and
    20 closing one of the molds mounted on a bed, according to the invention, the second mold is provided with an individual closing mechanism mounted on the bed parallel to the closing mechanism of the first mold, and the injection units are driven to rotate them and are diametrically opposed to the base mounted on the shaft placed between the mechanisms closing the forms
    30 nirchem each form is equipped with a plate,
    made with two forming sections and connected with a drive of its movement perpendicular to the direction of closing the form for alternately introducing the forming sections between parts of the form when pouring one and the other materials.
    In addition, the axis of rotation of the injection units is located vertically, and the plates of the forms are installed horizontally; ipiptsionnye nodes are equipped with a drive moving parallel to their axis of rotation; the drive for moving each plate is made in the form of a cylinder pivotally connected to the plate, and the device is provided with stops for fixing the plates; stops are made in the form of rods with a ball at their end; One forming section of each plate has a profile in the middle part corresponding to the shape of the middle part of the product, and the second section is limited by two conical reverse surfaces; One forming section of the plate in the middle part is made with distribution channels for feeding the material.
    FIG. 1 shows the described device, a general view; in fig. 2 given plates with two forming areas; in fig. 3 - product molded on this device.
    The device shown in the drawings is of a vertical type and has two identical closing mechanisms A and B. The base 1 of the device is connected by eight vertical columns 2 to an upper fixed double plate 3. On each group of four columns 2, a movable plate 4 is slidably mounted and moved in a vertical direction by means of a closing cylinder 5, the body 6 of which is rigidly connected to the base 1 .
    Between the two closing units A and B there is a shaft 7 having the possibility of rotation around the vertical axis 8 and mounted on the central base 9 by means of a thrust plate 10, which is supported on the base 9 in this case by means of a hydraulic power cylinder 11, which can control alternating turns of the shaft 7 to 180 °. However, the rotation of the shaft 7 in the thrust bearing 10 can also be carried out by any other means of driving the rotation, for example, a system with a gear motor.
    In the upper part of the shaft 7 above the bearing 12, which is located at the level of the fixed plates 3, two supports 13 and 14 are fixed, between which four guide vertical columns 15 are fixed. On these columns 15 there are slidably mounted two diametrically opposite beds 16, which can independently from each other, driven in a vertical reciprocating motion by means of two corresponding hydraulic power cylinders 17.
    Each bed 16 has a universal injection unit 18, the type of which corresponds to the pressing material.
    Each of the closure assemblies A and B has one shape, which in the illustrated embodiment allows the manufacture of a product — a hydraulic gasket formed of three parts, as shown in FIG. 3
    Each form basically has an upper part 19, in which a recess is made in the form of an upper half of a gasket being manufactured, a lower part 20, in which a recess is made in the form of a lower peripheral part of the gasket, and a central rod 21 corresponding to the lower central part of the gasket. Top part
    The molds are fastened under the fixed plate 3. The lower part 20 is installed by means of the expansion beams 22 on the base 23, which is centered on the movable plate 4. The rod 21 takes place in the central recess of the lower part 20 in which it is inserted and fixed.
    The presented forms have, in addition, a movable extraction sleeve 24 inserted into the above-mentioned recess between the lower part 20 of the mold and the central stem 21. This sleeve 24, giving the lower annular surface of the molded gasket, can vertically move relative to the lower part
    20 forms using ejectors 25 installed with the possibility of sliding in the above-mentioned part 20. The ejectors 25 themselves move by means of an ejector plate 26 guided by spacer beams 22 and located on the base 23. The ejection drive is carried out by a free-flowing spout 27 passing through the movable plate 4, from an auxiliary hydraulic ram 28 located in the stem 29 of the ram closing cylinder 5.
    A special movable horizontal plate 30 is inserted between the two parts 19 and 20 of each shape, made in the usual manner, in which two forming sections are formed in the form of circular holes 31 and 32 of a specific profile, well distinguished in FIG. 2. Each plate 30 moves in a direction perpendicular to the direction of closure of the molds using horizontal
    the power cylinder 33, the rod of which is pivotally connected to the plate 30 by means of a fork 34, vertically mounted on one end of the above-mentioned plate. The bottom surface of the plate 30 may
    positioned on four fixed
    rods x 35, in which the rotating ball 36 is located in the head.
    The profile of the opening 31 of the plate 30 is designed in such a way that it fills the cavity that will be occupied by the middle part of the product. In the center of this profile, several distribution channels 37 run in the radial direction, which approach the injection points. one of which is located on the upper side of the plate 30, and the others on its lower side. In addition, in the center of the profile in question, there is a device 38 for holding the sprue bushing.
    The second circular hole 3.2 of the plate 30 is formed by two reverse surfaces in the shape of a truncated cone 39 and 40.
    Each of the two forms is fed through a single nozzle 41, which vertically intersects its upper part 19, and has a central ejector 42 mounted slidably in the vertical direction in the rod 21 and supported by the action of the spring 43 on the vydattel plate 26. The rod 21 also has distribution channels 44.
    If the position as shown in FIG. 1, and consider what is happening on the side of A closure A, then the working cycle is expanded as follows.
    In the initial position, the shape of this closing unit A is closed, and the plate 30 is positioned so that the opening 31 is between the upper 19 and lower 20 parts of the form, while the center of the opening 31 is opposite the channel of the nozzle 41. The gasket has a central rod 45 (FIG. 3) low hardness, which must be protected at high pressures by two very hard rings 46 and 47, which are molded in such a way as to form a single packing with rod 45. all three parts of which must be non-separable.
    In this position, the iolith of the mold, which should be occupied by the gasket rod 45, is closed in this position of the plate 30, and therefore, inside the mold, there are two annular cavities corresponding to the two gasket rings 46 and 47.
    In this initial position, the distributive caiales 37, located at the star, cite both the above-mentioned ring-shaped software. and the injection unit 18 supplied to the closing unit A, therefore, can easily fill both cavities with the first pressing material introduced into its feed hopper.
    At the end of the injection cycle of this first material, and after cooling down, the shafts 29 of the closing cylinder 5 are lowered, which causes the mold to open.
    At the beginning of the movement of the movable plate 4 down plate 30 follows the movement of the lower part 20 of the form, which causes the injection points to detach from the upper gasket ring 46, which remains in the corresponding cavity, since no ejection device is provided in the upper part of the form; the shrinkage of the material blocks this ring around the central rod of the upper part 19. At the same time, the sprue bushing of the nozzle 41 is removed and remains pressed against the opening 31 of the plate 30 by the holding device 38.
    At the end of the lowering, when the mold is sufficiently open, the plate 30 abuts against the balls 36 of the rods 35. Continued lowering of the movable plate 4 causes the injectile points to detach from the lower ring 47, which remains in the corresponding cavity for the same reasons as outlined above. this push cylinder 28 is not actuated. Plate 30, back to position
    against the balls 36, may then freely move in a horizontal plane. The power cylinder 33 is operated in such a way as to move the plate until the second opening 32 is provided between the upper 19 and lower 20 parts of the mold. The first hole 31 is then located outside the protected area of the device, and since it does not contain any means
    ejection, the main sprue bushing from the nozzle channel 41 and the auxiliary spruing bushing from the distribution channels 37 are located in it. In this case, it is very convenient for the operator to extract them
    manually.
    At the same time, after lifting the injection nodes 18 with the help of power TIILINDERS 17, the power cylinder 11 is actuated in such a way as to turn
    180 ° shaft 7. and both injection gates, evil 18. Thus, the second spring knot 18, the feed bunker of which is filled with the second pressing material, the house that is different from the first, is brought to the position above
    by the considered form, which belongs to the node A, then lowers and presses against the nozzle 41 of this form.
    When the opening 32 of the plate 30 is applied to the mold, a signal is given, d to automatically close the node A, which in this case is brought to the position represented by (lig. 1 and occupied by the node B in this figure
    In this position, taking into account the profile of the hole 32, the plate 30 no longer closes the integrity corresponding to the central core 45 of the strip being molded; The role of hole profile 32 is to ensure accurate
    installation of both parts 19 and 20 forms for
    account surface 39, 40, made in vnde truncated cone.
    If we consider the same closing unit A, then the second material is fed into the same form and through the same nozzle 41 under pressure, which must fill the cavity that remains free between the two rings 46 and 47, which have already been cast. A complex of distribution channels 44 located by a star formed on the upper surface of the central rod 21, which were not used during the first ethane injection, was used to fill this cavity, since they were isolated from the channel of the nozzle 41 by the profile of the opening 31 of the plate 30. For the second stage described here taking into account the profile of the opening 32, the channels 44 extend the nozzle channel 41 and feed the second material into the cavity between the two rings 46 and 47.
    If the feed materials are compatible, mutual adhesion will occur in the hot state and under the pressure of the central rod 45 of the layer with both rings 46 and 47.
    At the end of the cycle, after the entire gasket has been cooled, both injection nodes 18 are raised, and while they rotate 180 ° around axis 8, the mold is opened. At the nerve stage, the upper part of the gasket is removed and the gating bushing of the nozzle 41 is pulled out due to the retention device provided at the intersection point of the distribution channels 44. After the plate 30 stops on the rods 35, the lowering of the movable plate 4 continues to a certain position.
    At this moment, a signal is given to automatically control the ejection cylinder 28, which in the automatic cycle of the device works only at the end of the mold opening movement. The impact nozzle 27 rises and lifts the base 23, the ejectors 25, the ejection sleeve 24 and the central ejector 42. The ejection sleeve 24 rises until it touches the upper surface of the lower part of the mold so that the injection points corresponding to the second injection operation are separated and the gasket completely separated from both parts of the form. At the same time, the central ejector 42 removes the sprue bushing as well as the material from the channels 44.
    If the downward stroke of the movable plate 4 is adjusted so that the lower surface of the plate 30 passes close enough to the upper surface of the lower part 20 of the mold, then the return of the plate 30 8 is the initial position under
    Turning the power cylinder 33 causes, without additional means, pushing the finished gasket and the last sprue bushing out of the device area. The sleeve can then be separated from the molded part by the operator or by an automatic mechanism.
    After the mold is closed, the node A is again in its original position, and the cycle described is repeated in the same way. While this work is taking place, the closing unit B performs the same process with a phase shift in the polycycle: the opening 32 of its plate 30 is in its shape when the opening 31 of the plate of another node A is in the shape of the latter, and one of the materials supplied under pressure to the form of the node B, while the other material
    It is supplied under pressure to the form of the node A. Thus, the completed gasket is made by the combination of both nodes in each half-cycle.
    If in the considered example it is assumed that both the closing units A and B and their forms are strictly identical, then it is possible to carry out gaskets made of the same materials, but different
    by their shape and / or size at each of the two nodes, each gasket being fully implemented on one node. It is also possible to provide molds with several cavities, allowing simultaneous execution of several gaskets or other parts at each node.
    By adapting the automatic control of the device so as to exclude the rotation of both injection units 18, it is possible to ensure the operation of the device as the work of two ordinary separate machines. Thus, it is possible to envisage working with completely independent cycles of both closing nodes A and B, or working with similar ones.
    cycles, simultaneous or shifted relative to each other.
    It is possible to use the device in a horizontal version, however, the construction in this case will be more complicated. It is possible to install closing mechanisms with the possibility of rotation relative to injection mechanisms. The device according to the present invention is used to fill parts made of two materials, in which the transition from one material to another should be carried out without mixing them. This device is particularly adapted for casting hydraulic gaskets of several components, the device is reliable in operation and has high performance, as it provides the manufacture of these types of products
    LEE is one form,
    权利要求:
    Claims (7)
    [1]
    1. A device for pouring iodine with pressure and polymer materials, containing at least two molds and two injection units, each equipped with a hopper for loading material different from the material in the bunker of another injection unit, and a closing mechanism for one of the molds mounted on a bed different from that, in order to increase the reliability and performance of the device when manufacturing products with a middle part of one material and external parts of another material, the second form is equipped with an individual mechanism of its mounted on the frame parallel to the closing mechanism of the first form, and the injection units are equipped with their rotational drive and installed diametrically opposed to the base mounted on a shaft placed between the mechanisms for closing the forms, each form being provided with a plate made with two forming sections and connected to the drive its movement is perpendicular to the direction of closing of the form for the alternate introduction of the forming sections between the parts of the form when pouring one and the other materials.
    [2]
    2. A device according to claim 1, characterized in that the axis of rotation of the injection units is located vertically, and the plates of the forms are installed horizontally.
    [3]
    3. A device according to claim 2, characterized in that the injection units are provided with a drive for moving parallel to their axis of rotation.
    [4]
    4. The device according to PP. 1-3, characterized in that the drive for moving each plate is made in the form of a cylinder pivotally connected to the plate, and the device is provided with stops for fixing
    plates.
    [5]
    5. The device according to claim 4, characterized in that the axles are made in the form of rods with a ball at their end.
    [6]
    6. Device but nn. 1-5, characterized in that one forming section
    each plate has a profile in the middle part corresponding to the shape of the middle part of the product, and the second forming section is made in the form of an aperture bounded by two conical reverse surfaces.
    [7]
    7. The device according to claim 6, characterized in that one forming section of the plate in the middle part is made with distribution channels for feeding the material.
    Sources of information taken into account in the examination
    1. V. Zavgorodniy. Mechanization and Automation of Plastics Processing. M., “Maschiyostroenie, 1970, p. 263.
    2. US patent 3807920, cl. 425-134, publ. 04/30/74 (prototype).
    If
    38
    35
    32
    fig.Z
    类似技术:
    公开号 | 公开日 | 专利标题
    SU753351A3|1980-07-30|Device for polymeric material casting under pressure
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    US4830811A|1989-05-16|Process for molding double-layered preforms in an injection, stretching and blow molding machine
    US3702750A|1972-11-14|Machine for forming thermoplastic resin parts by injection moulding
    US5383780A|1995-01-24|Apparatus for forming threaded molded article
    US3910740A|1975-10-07|Ejection-control system for injection-molding machine
    GB2030067A|1980-04-02|Method of and apparatus for making mouldings each comprising at least two moulded components
    SU606541A3|1978-05-05|Mechanism for closing plastic moulding machine moulds
    JPH0688319B2|1994-11-09|Rotary molding machine
    US3173176A|1965-03-16|Rotary injection moulding machine
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    RU2021133C1|1994-10-15|Casting mold for manufacture of polymeric products
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    CN112406013A|2021-02-26|Double-material step-by-step injection mold equipment
    同族专利:
    公开号 | 公开日
    ES467072A1|1978-11-01|
    SE7802071L|1978-08-26|
    FR2381617B1|1981-10-30|
    CS216196B2|1982-10-29|
    BG29867A3|1981-02-16|
    GB1600686A|1981-10-21|
    DE2806346A1|1978-08-31|
    PL204856A1|1978-11-06|
    IT1092749B|1985-07-12|
    IT7820355D0|1978-02-17|
    FR2381617A1|1978-09-22|
    BE864243A|1978-08-23|
    DD134498A5|1979-03-07|
    US4165959A|1979-08-28|
    JPS53105560A|1978-09-13|
    NL7801384A|1978-08-29|
    RO76023A|1981-03-10|
    PL114475B1|1981-01-31|
    YU28778A|1982-06-30|
    CA1102518A|1981-06-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2333059A|1941-01-08|1943-10-26|Hydraulic Dev Corp Inc|Two color injection die|
    US2528509A|1947-03-07|1950-11-07|Corning Glass Works|Mold charging apparatus|
    US3482284A|1967-02-23|1969-12-09|Husky Mfg Tool Works Ltd|Dual injection-molding machine|
    US3492696A|1967-08-14|1970-02-03|John Haller|Precision power-moved die table for presses|
    US3914081A|1969-12-29|1975-10-21|Katashi Aoki|Apparatus for injection molding two-colored products|
    CA978712A|1971-06-15|1975-12-02|Katashi Aoki|Multicolor injection molding machine|
    BE794635A|1972-01-29|1973-05-16|Showa Denko Kk|METHOD AND APPARATUS FOR PRODUCING HOLLOW MOLDED OBJECTS|US4460534A|1982-09-07|1984-07-17|International Business Machines Corporation|Two-shot injection molding|
    DE3402046C2|1984-01-21|1987-08-20|Heinrich 4180 Goch De Michel|
    US4520991A|1984-03-08|1985-06-04|Ilija Letica|Apparatus for maintaining uniform wall thickness in hollow molded plastic articles|
    GB2198385B|1986-12-05|1990-02-07|Metal Box Plc|Apparatus for injection moulding|
    CA2107282C|1992-10-22|1997-06-10|Ykk Corporation|Vertical injection molding machine|
    US5435715A|1992-10-26|1995-07-25|Campbell; Gerald D.|Multi-station injection molding apparatus|
    US6601296B1|1999-07-06|2003-08-05|Visteon Global Technologies, Inc.|Multi-shot injection molding process for making electrical connectors and three-dimensional circuits|
    JP3908202B2|2003-07-08|2007-04-25|東洋機械金属株式会社|Injection molding machine|
    US7143498B2|2004-02-24|2006-12-05|Lear Corporation|Method of manufacturing, 100% grained with non-shut-off condition two shot interior component|
    US7364683B2|2005-01-11|2008-04-29|Advance Tool, Inc.|Rotary automatic transfer rail for injection molding|
    CN101954719A|2009-07-17|2011-01-26|鸿富锦精密工业（深圳）有限公司|Ejection mechanism of injection mold|
    JP5559278B2|2012-09-19|2014-07-23|ファナック株式会社|Multicolor molded article manufacturing method and injection molding system|
    CN112045931A|2020-08-26|2020-12-08|广德滨瑞塑胶有限公司|Double-cylinder injection molding machine for automobile injection molding parts|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR7706335A|FR2381617B1|1977-02-25|1977-02-25|
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