WO2018120455A1 - 旋脱退模机构及注塑机 - Google Patents

旋脱退模机构及注塑机 Download PDF

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Publication number
WO2018120455A1
WO2018120455A1 PCT/CN2017/077971 CN2017077971W WO2018120455A1 WO 2018120455 A1 WO2018120455 A1 WO 2018120455A1 CN 2017077971 W CN2017077971 W CN 2017077971W WO 2018120455 A1 WO2018120455 A1 WO 2018120455A1
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WO
WIPO (PCT)
Prior art keywords
core
dental
sleeve
double
injection molding
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Application number
PCT/CN2017/077971
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English (en)
French (fr)
Inventor
邓云化
Original Assignee
深圳市博纳药包技术股份有限公司
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Publication of WO2018120455A1 publication Critical patent/WO2018120455A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/2618—Moulds having screw-threaded mould walls
    • B29C45/262—Moulds having screw-threaded mould walls provided with unscrewing drive means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/03—Injection moulding apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/32—Moulds having several axially spaced mould cavities, i.e. for making several separated articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
    • B29C45/332—Mountings or guides therefor; Drives therefor

Definitions

  • the invention relates to the field of injection molding technology, in particular to a spinning release molding mechanism and an injection molding machine.
  • the commonly used injection molding machine adopts a semi-hot runner or a cold runner injection molding mechanism, and cooperates with a cylinder or a motor to drive the screw-off mechanism to perform the action of demoulding the product after injection molding.
  • the injection molding machine of this structure has a long mold opening period. Defects reduce production efficiency and are not conducive to the competitiveness of enterprises in the long run.
  • the technical problem to be solved by the present invention is to provide an injection molding and demoulding device which is synchronized with the mold opening and does not occupy the mold design cycle.
  • a detaching and ejector mechanism comprising a detaching unit and a plurality of core units, and a plurality of core units surrounding the detaching unit;
  • the detaching unit comprises a double-threaded and double-threaded sleeving sleeve, and the double-threaded sill sleeve is sleeved on the rifling thread, and the inner side of the double-threaded sill sleeve and the outer side of the rifling line are provided with corresponding internal threads and external threads, There is a bearing on the outer side of the double-threaded sleeve, and a main gear is arranged on the outer side of the bearing;
  • the dental core unit includes a dental core, a dental core insert, a rotation preventing gear and a dental sleeve, the dental core insert is disposed at one end of the dental core, and the dental sleeve is disposed at the other end of the dental core, and the dental sleeve is provided with a thread guiding structure.
  • the dental core insert is coupled to the dental core through a rotation preventing gear, and the dental core is provided with a slave gear that is meshed with the main gear of the spin-off unit from the gear.
  • the double line moves along the axial direction, and the double thread sleeve is rotated, and the main gear drives the core of the tooth core, and the core core follows the double thread sleeve to rotate, and the core unit is guided by the thread of the socket.
  • the dental core is driven to move toward the end of the brachial sleeve.
  • the dental core insert is rotated by the rotation-proof gear, and does not follow the dental core to rotate together.
  • the double-threaded unit is moved into position, the rotation-removing unit stops working, and the dental core unit also rotates. In place, the detachment and withdrawal is completed;
  • the double line moves in the opposite direction in the axial direction, and the reverse rotation of the double thread sleeve is driven.
  • the main gear drives the core gear from the gear, and the core core follows the double thread sleeve to reversely rotate.
  • the core unit is in the Under the action of the thread guiding structure of the mouthpiece, the dental core is driven to move in the opposite direction of the socket end, and the double-wire is reset, the screw-off unit stops working, and the core unit is also rotated and reset.
  • the invention also relates to an injection molding machine, characterized in that it comprises an injection molding mechanism and a spin-off mold release mechanism, the injection molding mechanism being detachably disposed on the spin-off mold release mechanism, the injection molding mechanism comprising a plurality of injection heads, a plurality of injection molding a head is disposed corresponding to the plurality of core units of the unwinding mechanism, a cavity is formed between the injection head and the core unit, and the injection head comprises a hot nozzle and a sprue sleeve;
  • the injection molding mechanism is provided with a linkage mechanism with the double-threading of the rotation and disassembly unit of the spin-off mold release mechanism.
  • the molten plastic passes through the hot nozzle of the injection head, and then is injected into the cavity between the injection head and the core unit through the sprue sleeve to form a product, and after the injection is completed, the product is cooled by the cooling system. Cooling molding,
  • the injection molding mechanism is separated from the spin-off mold release mechanism.
  • the mold release mechanism is rotated to release the mold release mechanism at the same time, and the injection molding mechanism and the spin-off mold release mechanism are separated into position, and the spin-off mechanism of the mold release mechanism is released. The mold action is completed.
  • the utility model has the beneficial effects that: by the reciprocating motion of the double line, the movable double thread sleeve, the bearing and the main gear are rotated, and then the tooth core is rotated, and the thread guiding structure of the dental sleeve at the bottom of the dental core is matched, so that the dental core drives the product backward. Because the function of the anti-rotation gear of the dental core insert does not follow the rotation, the purpose of the core-pulling is achieved, and the product demoulding is synchronized with the mold opening, which greatly improves the production efficiency.
  • FIG. 1 is a schematic structural view of a spin-off mold release mechanism of the present invention
  • FIG. 2 is a schematic structural view of a hot nozzle of an injection molding mechanism of an injection molding machine of the present invention
  • a detaching and ejector mechanism includes a detaching unit and a plurality of core units, and a plurality of core units surround the detaching unit;
  • the splicing unit includes a splicing line 11 and a splicing thread sleeve 12, and the splicing thread sleeve is sleeved on the rifling thread, and the inner side of the double thread sleeve and the outer side of the rifling line are provided with corresponding internal threads and external threads.
  • a bearing 13 is arranged outside the double wire sleeve, and a main gear 14 is arranged outside the bearing 13;
  • the core unit includes a dental core 15, a dental core insert 16, a rotation preventing gear and a dental sleeve 17, the dental core insert 16 is disposed at one end of the dental core 15, and the dental sleeve 17 is disposed at the other end of the dental core 15,
  • the dental mouthpiece 17 is provided with a threaded guiding structure, the dental core insert 16 being connected to the dental core 15 by a rotation preventing gear, the dental core 15 being provided with a secondary gear 15 which passes through the gearing 18 and the detaching unit
  • the main gear 14 meshes with the linkage.
  • the beneficial effects of the present invention are: by the reciprocating motion of the double line, the moving double thread sleeve, the bearing and the main gear are rotated, and then the core is rotated to match the thread guiding structure of the braces at the bottom of the core.
  • the dental core drives the product to retreat. Since the function of the rotation-proof gear of the dental core insert does not follow the rotation, the purpose of the core-pulling is achieved, and the product release and the mold opening are synchronized, which greatly improves the production efficiency.
  • the double line moves along the axial direction, and the double thread sleeve is rotated.
  • the main gear drives the core of the tooth core, and the core core follows the double thread sleeve to rotate.
  • the function of the core unit in the thread guiding structure of the dental sleeve is Next, the tooth core is moved toward the end of the socket, and the dental core insert is rotated by the rotation of the tooth core, and the double thread is moved in place, the rotation unit stops working, and the core unit is also rotated into position.
  • the demoulding action is completed;
  • the double line moves in the opposite direction in the axial direction, and the reverse rotation of the double thread sleeve is driven.
  • the main gear drives the core gear from the gear, and the core core follows the double thread sleeve to reversely rotate.
  • the core unit is in the Under the action of the thread guiding structure of the mouthpiece, the dental core is driven to move in the opposite direction of the socket end, and the double-wire is reset, the screw-off unit stops working, and the core unit is also rotated and reset.
  • the multi-thread type retracting and extruding mechanism can make the product with internal thread after the injection molding is completed, and at the same time as demolding, the externally threaded mold on the inner side of the product is pulled out of the product through the core.
  • the effect of simultaneous mold opening and demolding is realized, which effectively saves production time and improves production efficiency.
  • the invention also relates to an injection molding machine, comprising an injection molding mechanism and a detaching and ejector mechanism, the injection molding mechanism being detachably disposed on the detaching and ejector mechanism, the injection molding mechanism comprising a plurality of injection molding heads, a plurality of injection molding heads and the a plurality of core units of the ejecting mechanism are correspondingly disposed, a cavity is formed between the injection head and the core unit, and the injection head comprises a hot nozzle 21 and a sprue sleeve 22;
  • the injection molding mechanism is provided with a linkage mechanism with the double-threading of the rotation and disassembly unit of the spin-off mold release mechanism.
  • the molten plastic is injected into the cavity between the injection head and the core unit through the hot nozzle 21 of the injection head, and then through the sprue sleeve 22 to form a product.
  • the cooling system is used for the product 23 Cooling molding,
  • the injection molding mechanism is separated from the spin-off mold release mechanism.
  • the mold release mechanism is rotated to release the mold release mechanism at the same time, and the injection molding mechanism and the spin-off mold release mechanism are separated into position, and the spin-off mechanism of the mold release mechanism is released. The mold action is completed.
  • the injection molding machine with the linkage mechanism has a faster injection molding, molding, and spin-off mold release speed, which can greatly improve production efficiency and enhance the competitiveness of the enterprise.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Transmission Devices (AREA)

Abstract

一种旋脱退模机构及注塑机，包括旋脱单元和多个牙芯单元，多个牙芯单元环绕于旋脱单元；旋脱单元包括来复线(11)、来复线司套(12)，来复线司套(12)套接于来复线(11)，来复线司套(12)内侧与来复线(11)外侧对应设有相适配的内螺纹和外螺纹，轴承(13)外侧设有主齿轮(14)；牙芯(15)外侧设有从齿轮(18)，牙芯(15)通过齿轮啮合与旋脱单元联动。通过来复线(11)的往复运动，使来复线司套(12)、轴承(13)及主齿轮(14)转动，再带动牙芯(15)旋转，配合牙芯(15)底部的牙套(17)的螺纹导向结构，使牙芯(15)带动产品后退，由于牙芯镶件(16)的止转齿轮的作用不会跟随转动，因而达到旋脱抽芯的目的，实现了产品脱模与模具开模同步进行，大大提高了生产效率。

Description

旋脱退模机构及注塑机
技术领域
本发明涉及注塑技术领域，尤其是指一种旋脱退模机构及注塑机。
背景技术
常用的注塑退模机采用半热流道或冷流道的注塑机构，配合油缸或者马达带动旋脱机构，对产品注胶再进行退模的动作，这种结构的注塑机存在开模周期长的缺陷，降低了生产效率，长久来看不利于企业的竞争力。
发明内容
本发明所要解决的技术问题是：提供一种脱模与模具开模同步，不占用模具设计周期的注塑退模装置。
为了解决上述技术问题，本发明采用的技术方案为：一种旋脱退模机构，包括旋脱单元和多个牙芯单元，多个牙芯单元环绕于所述旋脱单元；
所述旋脱单元包括来复线、来复线司套，所述来复线司套套接于所述来复线，来复线司套内侧与来复线外侧对应设有相适配的内螺纹和外螺纹，所述来复线司套外侧设有轴承，轴承外侧设有主齿轮；
所述牙芯单元包括牙芯、牙芯镶件、止转齿轮和牙套，所述牙芯镶件设置于牙芯一端，牙套设置于牙芯的另一端，所述牙套设有螺纹导向结构，所述牙芯镶件通过止转齿轮与牙芯连接，所述牙芯设有从齿轮，所述牙芯通过从齿轮与旋脱单元的主齿轮啮合联动。
进一步的，旋脱退模时，来复线沿轴向运动，带动来复线司套转动，通过主齿轮带动牙芯的从齿轮，牙芯跟随来复线司套进行转动，牙芯单元在牙套的螺纹导向结构的作用下，带动牙芯向牙套端方向移动，牙芯镶件由于止转齿轮作用，不跟随牙芯一并转动，待来复线移动到位，旋脱单元停止工作，牙芯单元也旋移到位，旋脱退模动作完成；
退模完成后，来复线沿轴向进行反向运动，带动来复线司套反向转动，通过主齿轮带动牙芯的从齿轮，牙芯跟随来复线司套进行反向转动，牙芯单元在牙套的螺纹导向结构的作用下，带动牙芯向牙套端的反方向移动，待来复线复位，旋脱单元停止工作，牙芯单元也旋移复位。
本发明还涉及一种注塑机，其特征在于：包括注塑机构和旋脱退模机构，所述注塑机构可分离的设置于旋脱退模机构上面，所述注塑机构包括多个注塑头，多个注塑头与所述退膜机构的多个牙芯单元对应设置，所述注塑头和所述牙芯单元之间形成有空腔，所述注塑头包括热嘴和浇口套；
所述注塑机构设有与所述旋脱退模机构的旋脱单元的来复线的联动机构。
进一步的，工作时，溶融状态的塑胶通过注塑头的热嘴，再经过浇口套注入所述注塑头和牙芯单元之间的空腔，形成产品，注胶完毕后，由冷却系统对产品冷却成型，
而后将注塑机构与旋脱退模机构分离，分离过程中，通过所述联动机构，旋脱退模机构同时进行旋脱退模动作，待注塑机构与旋脱退模机构分离到位，旋脱退模机构的旋脱退模动作完成。
本发明的有益效果在于：通过来复线的往复运动，使动来复线司套、轴承及主齿轮转动，再带动牙芯旋转，配合牙芯底部的牙套的螺纹导向结构，使牙芯带动产品后退，产品由于牙芯镶件的止转齿轮的作用不会跟随转动，因而达到旋脱抽芯的目的，实现了产品脱模与模具开模同步进行，大大提高了生产效率。
附图说明
下面结合附图详述本发明的具体结构：
图1为本发明的旋脱退模机构的结构示意图；
图2为本发明的注塑机的注塑机构的热嘴的结构示意图；
11-来复线；12-来复线司套；13-轴承；14-主齿轮；15-牙芯；16-牙芯镶件；17-牙套；18-从齿轮；
21-热嘴；22-浇口套；23-产品。
具体实施方式
为详细说明本发明的技术内容、构造特征、所实现目的及效果，以下结合实施方式并配合附图详予说明。
请参阅图1，一种旋脱退模机构，包括旋脱单元和多个牙芯单元，多个牙芯单元环绕于所述旋脱单元；
所述旋脱单元包括来复线11、来复线司套12，所述来复线司套套接于所述来复线，来复线司套内侧与来复线外侧对应设有相适配的内螺纹和外螺纹，所述来复线司套外侧设有轴承13，轴承13外侧设有主齿轮14；
所述牙芯单元包括牙芯15、牙芯镶件16、止转齿轮和牙套17，所述牙芯镶件16设置于牙芯15一端，牙套17设置于牙芯15的另一端，所述牙套17设有螺纹导向结构，所述牙芯镶件16通过止转齿轮与牙芯15连接，所述牙芯15设有从齿轮18，所述牙芯15通过从齿轮18与旋脱单元的主齿轮14啮合联动。
从上述描述可知，本发明的有益效果在于：通过来复线的往复运动，使动来复线司套、轴承及主齿轮转动，再带动牙芯旋转，配合牙芯底部的牙套的螺纹导向结构，使牙芯带动产品后退，由于牙芯镶件的止转齿轮的作用不会跟随转动，因而达到旋脱抽芯的目的，实现了产品脱模与模具开模同步进行，大大提高了生产效率。
实施例1
旋脱退模时，来复线沿轴向运动，带动来复线司套转动，通过主齿轮带动牙芯的从齿轮，牙芯跟随来复线司套进行转动，牙芯单元在牙套的螺纹导向结构的作用下，带动牙芯向牙套端方向移动，牙芯镶件由于止转齿轮作用，不跟随牙芯一并转动，待来复线移动到位，旋脱单元停止工作，牙芯单元也旋移到位，旋脱退模动作完成；
退模完成后，来复线沿轴向进行反向运动，带动来复线司套反向转动，通过主齿轮带动牙芯的从齿轮，牙芯跟随来复线司套进行反向转动，牙芯单元在牙套的螺纹导向结构的作用下，带动牙芯向牙套端的反方向移动，待来复线复位，旋脱单元停止工作，牙芯单元也旋移复位。
由上可知，采用来复线式的旋脱退模机构，可以使具备内螺纹的产品在注塑成型完成后，在脱模的同时，将产品内侧的设有外螺纹的模具通过牙芯抽离产品，实现了开模与脱模同时进行的效果，有效节省了生产时间，提高了生产效率。
本发明还涉及一种注塑机，包括注塑机构和旋脱退模机构，所述注塑机构可分离的设置于旋脱退模机构上面，所述注塑机构包括多个注塑头，多个注塑头与所述退膜机构的多个牙芯单元对应设置，所述注塑头和所述牙芯单元之间形成有空腔，所述注塑头包括热嘴21和浇口套22；
所述注塑机构设有与所述旋脱退模机构的旋脱单元的来复线的联动机构。
由上可知，通过在注塑头的热嘴设置浇口套，可以避免水口残留，以致产生废料，同时浇口套的保温效果，可以使注塑机构更快进入下一次的注胶工作中，提高了生产效率。
实施例2
工作时，溶融状态的塑胶通过注塑头的热嘴21，再经过浇口套22注入所述注塑头和牙芯单元之间的空腔，形成产品，注胶完毕后，由冷却系统对产品23冷却成型，
而后将注塑机构与旋脱退模机构分离，分离过程中，通过所述联动机构，旋脱退模机构同时进行旋脱退模动作，待注塑机构与旋脱退模机构分离到位，旋脱退模机构的旋脱退模动作完成。
由上可知，具备联动机构的注塑机，具备更快的注胶、成型、旋脱退模速度，可以大大提高生产效率，提高企业的竞争力。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (4)

  1. 一种旋脱退模机构，其特征在于：包括旋脱单元和多个牙芯单元，多个牙芯单元环绕于所述旋脱单元；
    所述旋脱单元包括来复线、来复线司套，所述来复线司套套接于所述来复线，来复线司套内侧与来复线外侧对应设有相适配的内螺纹和外螺纹，所述来复线司套外侧设有轴承，轴承外侧设有主齿轮；
    所述牙芯单元包括牙芯、牙芯镶件、止转齿轮和牙套，所述牙芯镶件设置于牙芯一端，牙套设置于牙芯的另一端，所述牙套设有螺纹导向结构，所述牙芯镶件通过止转齿轮与牙芯连接，所述牙芯设有从齿轮，所述牙芯通过从齿轮与旋脱单元的主齿轮啮合联动。
  2. 如权利要求1所述的旋脱退模机构，其特征在于：旋脱退模时，来复线沿轴向运动，带动来复线司套转动，通过主齿轮带动牙芯的从齿轮，牙芯跟随来复线司套进行转动，牙芯单元在牙套的螺纹导向结构的作用下，带动牙芯向牙套端方向移动，牙芯镶件由于止转齿轮作用，不跟随牙芯一并转动，待来复线移动到位，旋脱单元停止工作，牙芯单元也旋移到位，旋脱退模动作完成；
    退模完成后，来复线沿轴向进行反向运动，带动来复线司套反向转动，通过主齿轮带动牙芯的从齿轮，牙芯跟随来复线司套进行反向转动，牙芯单元在牙套的螺纹导向结构的作用下，带动牙芯向牙套端的反方向移动，待来复线复位，旋脱单元停止工作，牙芯单元也旋移复位。
  3. 一种注塑机，其特征在于：包括注塑机构和旋脱退模机构，所述注塑机构可分离的设置于旋脱退模机构上面，所述注塑机构包括多个注塑头，多个注塑头与所述退膜机构的多个牙芯单元对应设置，所述注塑头和所述牙芯单元之间形成有空腔，所述注塑头包括热嘴和浇口套；
    所述注塑机构设有与所述旋脱退模机构的旋脱单元的来复线的联动机构。
  4. 如权利要求3所述的注塑机，其特征在于：工作时，溶融状态的塑胶通过注塑头的热嘴，再经过浇口套注入所述注塑头和牙芯单元之间的空腔，形成产品，注胶完毕后，由冷却系统对产品冷却成型，
    而后将注塑机构与旋脱退模机构分离，分离过程中，通过所述联动机构，旋脱退模机构同时进行旋脱退模动作，待注塑机构与旋脱退模机构分离到位，旋脱退模机构的旋脱退模动作完成。
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