公开(公告)号：US11712829B2

公开(公告)日：2023-08-01

申请号：US16924120

申请日：2020-07-08

Applicant: NISSEI PLASTIC INDUSTRIAL CO., LTD.

Inventor： Atsushi Murata ,  Tomonori Karasawa ,  Hirofumi Murata ,  Hozumi Yoda

IPC: B29C45/17 ,  B29C45/68

CPC classification number: B29C45/68 ,  B29C2045/686

Abstract: An injection molding apparatus has a mold clamping device that includes a traction platen disposed below a pressure-receiving platen, a movable platen disposed above the pressure-receiving platen and configured to be moved up and down by a mold opening and closing mechanism, and tie bars extending downward from the movable platen and penetrating the pressure-receiving platen and the traction platen. The mold clamping device is configured to clamp molds disposed between the pressure-receiving platen and the movable platen. Each tie bar has a tooth portion at its lower end that engages with a tooth portion of a half nut connected to an underside of the traction plate. An injection device arranged on the movable platen includes a heating cylinder having a screw for feeding resin material through a nozzle to an upper one of the molds, and a purging cover encloses a space between the lower end portion of the heating cylinder and the movable platen.

公开(公告)号：US11890796B2

公开(公告)日：2024-02-06

申请号：US16924111

申请日：2020-07-08

Applicant: NISSEI PLASTIC INDUSTRIAL CO., LTD.

Inventor： Hozumi Yoda ,  Atsushi Murata ,  Satoshi Hoshino

IPC: B29C45/68 ,  B29C33/24 ,  B29C45/76

CPC classification number: B29C45/68 ,  B29C33/24 ,  B29C45/7653 ,  B29C2045/686 ,  B29C2045/688

Abstract: In a mold clamping apparatus, a mold clamping mechanism is provided with a half nut, and a tie bar is provided with circumferential groove configured to meshed with the teeth of the half nut. A strong-force mold opening mechanism that opens molds at an initial stage of mold opening extends across a space separating a movable platen and the mold clamping mechanism and is connected to the movable platen and the mold clamping mechanism. The strong-force mold opening mechanism is set so as to have greater axial force and shorter stroke than those of a mold opening and closing mechanism. A control unit controls opening and closing of the half nut, controls the strong-force mold opening mechanism and controls the position of the half nut in such a way that the half nut is synchronized with the circumferential groove by the strong-force mold opening mechanism.

公开(公告)号：US07112058B2

公开(公告)日：2006-09-26

申请号：US10613925

申请日：2003-07-03

Applicant: Roland Felix

Inventor： Roland Felix

IPC: B29C45/64

CPC classification number: B29C45/68 ,  B29C2045/686

Abstract: A clamping mechanism for a clamping unit of an injection molding machine includes a drive unit which moves a first platen linearly relative to a fixed second platen and is linked to the first platen for limited movement. A force-application unit builds up a clamping force, when the first platen assumes a closing position. Disposed between the force application unit and the first platen is a locking device which transmits the clamping force and includes a screw mechanism which operates in synchronism with the drive unit and has a screw shaft and a locking nut constructed to normally connect with clearance to the screw shaft via a thread connection and to interact with the screw shaft for transmitting a load, when the clamping force is applied, whereby the threaded connection is forced to self-lock to secure the locking nut on the screw shaft and prevent reverse rotation of the locking nut.

Abstract translation: 用于注射成型机的夹持单元的夹持机构包括：驱动单元，其使第一压板相对于固定的第二压板线性地移动，并且与第一压板连接以进行有限的运动。 当第一台板处于关闭位置时，施力单元建立夹紧力。 设置在施力单元和第一压板之间的是锁定装置，该锁定装置传递夹紧力并且包括与驱动单元同步操作的螺旋机构，并且具有螺纹轴和锁定螺母，该螺母轴构造成与螺钉正常连接 轴，并且当施加夹紧力时与螺杆轴相互作用以传递负载，由此螺纹连接被迫自锁以将锁定螺母固定在螺纹轴上并防止锁定的反向旋转 坚果。

公开(公告)号：US20040091570A1

公开(公告)日：2004-05-13

申请号：US10470026

申请日：2003-07-29

Inventor： Walter Wohlrab ,  R?uuml;diger Ostholt ,  Ralf Ingo Meyer ,  Klaus Becker

IPC: B29C045/66

CPC classification number: B29C45/68 ,  B29C2045/686

Abstract: The invention relates to a linear drive device for opening and closing molding tools and for applying a clamping force thereon, especially mold halves of a plastics molding machine. The device is comprised of a screw drive acting upon the molding tool, a first screw nut for opening and closing the molding tools and a piston/cylinder unit for applying a clamping force. In order to provide a linear drive device for opening and closing molding tools, especially mold halves of a plastics molding machine, which enables fast opening and closing of the molding tools and energy-optimized application of the clamping force to the molding tools, the piston/cylinder unit (113) acts upon the molding tool by means of a second screw nut (108).

Abstract translation: 本发明涉及一种用于打开和关闭成型工具以及在其上施加夹紧力的线性驱动装置，特别是塑料模塑机的半模。 该装置由作用在模制工具上的螺杆驱动器，用于打开和关闭模制工具的第一螺母以及用于施加夹紧力的活塞/缸单元构成。 为了提供用于打开和关闭模制工具的线性驱动装置，特别是塑料成型机的模具半部，其能够快速打开和关闭模制工具，并且将能量优化地施加到模制工具上的夹紧力，活塞 /缸单元（113）借助于第二螺母（108）作用在模制工具上。

公开(公告)号：US06821463B2

公开(公告)日：2004-11-23

申请号：US10190603

申请日：2002-07-09

Applicant: Leonardo Di Dio ,  Anselmo Vignale

Inventor： Leonardo Di Dio ,  Anselmo Vignale

IPC: B29C4566

CPC classification number: B29C45/68 ,  B29C2045/686

Abstract: A method and a mold clamping press for injection molding machines; the press comprises a stationary platen and a movable platen operatively connected to control means which can be operated to relatively move the platens towards and away from each other. Slidable tie-rods, each connected to a respective control cylinder, axially extend between the platens passing through locking bushes rotatably supported by a platen of the press. Each locking bush and the corresponding tie-rod are provided with opposite intermeshing screw threads having an axial clearance; the bushes are made to rotate in synchronism and in a way correlated to the displacement of the movable platen, avoiding any frictional contact between the screw threads during the closing and opening of the mold. The tie-rods are then made to slide with respect to the locking bushes and the platens of the press, causing a contact between the screw threads of the bushes and the tie-rods, and a thrust of the bushes against the movable platen, of the press to generate the required tonnage for tightly clamping the mold.

Abstract translation: 一种注射成型机的方法和合模机; 压力机包括固定压板和可操作地连接到控制装置的可动压板，控制装置可操作以使压板相对移动并彼此远离。 每个连接到相应的控制气缸的可滑动的拉杆在压板之间轴向延伸，通过由压机的压盘可旋转地支撑的锁紧衬套。 每个锁定衬套和对应的拉杆设置有具有轴向间隙的相对啮合的螺纹; 衬套被制成同步地旋转并且以与可动压板的位移相关的方式旋转，避免了在模具闭合和打开期间螺纹之间的任何摩擦接触。 然后使拉杆相对于锁紧衬套和冲压机的压板滑动，导致衬套的螺纹和拉杆之间的接触以及衬套抵靠可动压板的推力， 压力机产生所需的吨位以紧紧夹紧模具。

公开(公告)号：US20040058032A1

公开(公告)日：2004-03-25

申请号：US10613925

申请日：2003-07-03

Applicant: DEMAG ERGOTECH GMBH

Inventor： Roland Felix

IPC: B29C045/66

CPC classification number: B29C45/68 ,  B29C2045/686

Abstract: A clamping mechanism for a clamping unit of an injection molding machine includes a drive unit which moves a first platen linearly relative to a fixed second platen and is linked to the first platen for limited movement. A force-application unit builds up a clamping force, when the first platen assumes a closing position. Disposed between the force application unit and the first platen is a locking device which transmits the clamping force and includes a screw mechanism which operates in synchronism with the drive unit and has a screw shaft and a locking nut constructed to normally connect with clearance to the screw shaft via a thread connection and to interact with the screw shaft for transmitting a load, when the clamping force is applied, whereby the threaded connection is forced to self-lock to secure the locking nut on the screw shaft and prevent reverse rotation of the locking nut.

Abstract translation: 用于注射成型机的夹持单元的夹持机构包括：驱动单元，其使第一压板相对于固定的第二压板线性地移动，并且与第一压板连接以进行有限的运动。 当第一台板处于关闭位置时，施力单元建立夹紧力。 设置在施力单元和第一压板之间的是锁定装置，该锁定装置传递夹紧力并且包括与驱动单元同步操作的螺旋机构，并且具有螺纹轴和锁定螺母，该螺母轴构造成与螺钉正常连接 轴，并且当施加夹紧力时与螺杆轴相互作用以传递负载，由此螺纹连接被迫自锁以将锁定螺母固定在螺纹轴上并防止锁定的反向旋转 坚果。

公开(公告)号：US20030020194A1

公开(公告)日：2003-01-30

申请号：US10190603

申请日：2002-07-09

Inventor： Leonardo Di Dio ,  Anselmo Vignale

IPC: B29C045/66

CPC classification number: B29C45/68 ,  B29C2045/686

Abstract: A method and a mold clamping press for injection molding machines; the press comprises a stationary platen and a movable platen operatively connected to control means which can be operated to relatively move the platens towards and away from each other. Slidable tie-rods, each connected to a respective control cylinder, axially extend between the platens passing through locking bushes rotatably supported by a platen of the press. Each locking bush and the corresponding tie-rod are provided with opposite intermeshing screw threads having an axial clearance; the bushes are made to rotate in synchronism and in a way correlated to the displacement of the movable platen, avoiding any frictional contact between the screw threads during the closing and opening of the mold. The tie-rods are then made to slide with respect to the locking bushes and the platens of the press, causing a contact between the screw threads of the bushes and the tie-rods, and a thrust of the bushes against the movable platen, of the press to generate the required tonnage for tightly clamping the mold.

Abstract translation: 一种注射成型机的方法和合模机; 压力机包括固定压板和可操作地连接到控制装置的可动压板，控制装置可操作以使压板相对移动并相互移动。 每个连接到相应的控制气缸的可滑动的拉杆在压板之间轴向延伸，通过由压机的压盘可旋转地支撑的锁紧衬套。 每个锁定衬套和对应的拉杆设置有具有轴向间隙的相对啮合的螺纹; 衬套被制成同步地旋转并且以与可动压板的位移相关的方式旋转，避免了在模具闭合和打开期间螺纹之间的任何摩擦接触。 然后使拉杆相对于锁紧衬套和冲压机的压板滑动，导致衬套的螺纹和拉杆之间的接触以及衬套抵靠可动压板的推力， 压力机产生所需的吨位以紧紧夹紧模具。