• 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:
    Device and procedure for the suction of air in injection molds and the subsequent ejection of molded parts. The device for suction of air in injection molds and the subsequent ejection of molded parts comprises a venturi ejector (11) connected to a first valve (21), which at the moment of closure of the mold causes the suction of air in a mold cavity, comprising at least one insert of porous material (31) through which and by means of a communication conduit defining a suction circuit, and a second valve (22), which after solidification of the plastic material, causes the blowing of air towards said at least one porous material pad (31), cleaning said at least one porous material pad (31). It allows to reduce the volume of air of the second part of the injection cycle with the same empirical value of 90% effectiveness of the venturi ejector. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2651694A1
    申请号:ES201631030
    申请日:2016-07-27
    公开日:2018-01-29
    发明作者:Alberto Navarra Pruna
    申请人:Comercial de Utiles y Moldes SA；
    IPC主号:
    专利说明:

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    it has enough areas or space to apply the vacuum valve, and only the pneumatic mechanism B can be applied, since, being a small volume of air, the direct suction of the Venturi ejector 11 through the porous material of the insert 31 It allows the emptying of air in these small cavities.
    The operation of the device according to the present invention only with the pneumatic mechanism B is schematically described in Figure 4. For simplicity, the same reference numbers are used to identify the same or similar components as in the embodiment in which They use the electropneumatic mechanism B and the valves of the machine. It should be noted that, although a single insert 31 is shown in Figure 4, preferably more than one insert 31 will be used, as could be done in the first previous embodiment.
    The method according to the present invention is as follows, in accordance with said second embodiment:
    When the machine is closed, the first valve 21 that gives air to the Venturi ejector 11 is activated, initiating the suction of the air through a circuit that connects with all the cavities. Then, the injection is carried out.
    From this moment and during the entire injection time, the Venturi ejector 11 continues to suck through the porous material inserts 31. At the end of the injection cycle, the first valve 21 that gives air to the Venturi ejector is closed 11. It is at the moment that the expulsion of the mold that activates the second valve 22 is activated, which makes the double-acting piston 10 act, closing the passage in the direction of the Venturi ejector 11, concentrating all its pressure , only for cleaning the porous material. The blow-cleaning time can be programmed as needed.
    Although reference has been made to a specific embodiment of the invention, it is apparent to one skilled in the art that the described device and method are susceptible of numerous variations and modifications, and that all the mentioned details can be replaced by others technically equivalent, without departing from the scope of protection defined by the appended claims.
    9
    权利要求:
    Claims (1)
    [1]
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    类似技术:
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    同族专利:
    公开号 | 公开日
    US20180029271A1|2018-02-01|
    ES2651694B1|2018-11-16|
    JP2018047685A|2018-03-29|
    ES2718244T3|2019-06-28|
    EP3275616A1|2018-01-31|
    PT3275616T|2019-04-16|
    JP6920915B2|2021-08-18|
    EP3275616B1|2019-01-02|
    US11161289B2|2021-11-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH01176530A|1988-01-06|1989-07-12|Dainippon Printing Co Ltd|Preparation of in-mold decorative molding|
    JPH01210323A|1988-02-19|1989-08-23|Honda Motor Co Ltd|Injection molding device|
    JPH02175115A|1988-12-27|1990-07-06|Olympus Optical Co Ltd|High precision molding of plastic lens and molding device therefor|
    JPH11105083A|1997-10-03|1999-04-20|Mitsubishi Motors Corp|Mold structure for resin injection molding|
    US20020179613A1|2001-06-05|2002-12-05|Yutaka Matsui|Molding system and related method using a side-gated injection mold with vacuum assist and resulting blow molded article|
    ES2348901A1|2010-07-09|2010-12-16|Comercial De Utiles Y Moldes S.A.|Device for the suction of air in cavidades of molds of injection and the subsequent expulsion of the parts molded in said cavidades. |CN111347623A|2020-03-23|2020-06-30|李金国|Negative pressure injection molding mold|JP3469647B2|1994-09-02|2003-11-25|出光石油化学株式会社|Injection molding method and injection molding apparatus for synthetic resin molded products|
    US6367765B1|1999-09-09|2002-04-09|Klaus A. Wieder|Mold vent|CN107813467B|2017-11-30|2019-06-14|重庆鑫际激光科技有限公司|Computer components release method|
    CN110076313B|2019-05-05|2021-01-15|广东鸿图武汉压铸有限公司|Die casting die based on integration of vacuum exhaust and natural exhaust|
    法律状态:
    2018-11-16| FG2A| Definitive protection|Ref document number: 2651694 Country of ref document: ES Kind code of ref document: B1 Effective date: 20181116 |
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201631030A|ES2651694B1|2016-07-27|2016-07-27|Device and procedure for the suction of air in injection molds and the subsequent expulsion of molded parts|ES201631030A| ES2651694B1|2016-07-27|2016-07-27|Device and procedure for the suction of air in injection molds and the subsequent expulsion of molded parts|
    ES17382489T| ES2718244T3|2016-07-27|2017-07-25|Device and procedure of air suction in injection molds and subsequent ejection of molded parts|
    EP17382489.7A| EP3275616B1|2016-07-27|2017-07-25|Device and method for the suction of air in injection molds and the subsequent expulsion of molded pieces|
    PT17382489T| PT3275616T|2016-07-27|2017-07-25|Device and method for the suction of air in injection molds and the subsequent expulsion of molded pieces|
    US15/661,716| US11161289B2|2016-07-27|2017-07-27|Device and method for the suction of air in injection molds and the subsequent expulsion of molded pieces|
    JP2017145145A| JP6920915B2|2016-07-27|2017-07-27|Equipment and methods for sucking air in an injection mold and then discharging the molded product|
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