IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0667679
(2006-04-19)
|
등록번호 |
US-7491051
(2009-02-17)
|
우선권정보 |
JP-2005-126202(2005-04-25) |
국제출원번호 |
PCT/JP06/008186
(2006-04-19)
|
§371/§102 date |
20070514
(20070514)
|
국제공개번호 |
WO06/115141
(2006-11-02)
|
발명자
/ 주소 |
- Matsushita,Hiroto
- Terayama,Hiroshi
- Katoh,Naoki
- Sakamoto,Ayumi
- Yasuda,Shinji
- Mori,Sadao
|
출원인 / 주소 |
- Mitsubishi Heavy Industries Plastic Technology Co., Ltd.
- Honda Motor Co., Ltd.
|
대리인 / 주소 |
Birch, Stewart, Kolasch & Birch, LLP
|
인용정보 |
피인용 횟수 :
9 인용 특허 :
3 |
초록
▼
Provided is a mold clamping apparatus of a mold having a side wall portion of cantilever shape, by which deformation of the mold side wall portion can be efficiently suppressed. An injection molding machine and injection molding method both using the mold clamping apparatus are also provided. Thereb
Provided is a mold clamping apparatus of a mold having a side wall portion of cantilever shape, by which deformation of the mold side wall portion can be efficiently suppressed. An injection molding machine and injection molding method both using the mold clamping apparatus are also provided. Thereby, molded articles with high quality having no flash generation can be obtained. The mold clamping apparatus comprises a side pusher comprising a pair of supports respectively arranged between adjacent two tie bars out of a plurality of tie bars at positions symmetrical to each other and slidably supported to the tie bars, a moving and positioning means linking the supports to a fixed platen or movable platen and moving the supports to be positioned at a predetermined position and a lateral clamping means provided on each of the pair of supports to push a side face of a fixed mold or movable mold.
대표청구항
▼
What claimed is: 1. A mold clamping apparatus comprising: a fixed platen fixed to a base, a movable platen arranged, being opposed to said fixed platen, to be movable forward and backward, a plurality of tie bars making said fixed platen and movable platen linkable to each other, a mold clamping me
What claimed is: 1. A mold clamping apparatus comprising: a fixed platen fixed to a base, a movable platen arranged, being opposed to said fixed platen, to be movable forward and backward, a plurality of tie bars making said fixed platen and movable platen linkable to each other, a mold clamping means causing a tensile force to act on said tie bars to clamp together a mold comprising a fixed mold fitted to said fixed platen and a movable mold fitted to said movable platen and a side pusher comprising a pair of supports respectively arranged between adjacent two tie bars out of said plurality of tie bars at positions symmetrical to each other and slidably supported to said tie bars, a moving and positioning means linking said supports to said fixed platen or movable platen and moving said supports to be positioned at a predetermined position and a lateral clamping means provided on each of said pair of supports to push a side face of said fixed mold or movable mold. 2. A mold clamping apparatus comprising: a fixed platen fixed to a base, a movable platen arranged, being opposed to said fixed platen, to be movable forward and backward, a plurality of tie bars making said fixed platen and movable platen linkable to each other, a mold clamping means causing a tensile force to act on said tie bars to clamp together a mold comprising a fixed mold fitted to said fixed platen and a movable mold fitted to said movable platen and a side pusher comprising a quadrangular frame formed by two vertical members forming a mold right side and left side pair and upper and lower two horizontal members, said vertical members having their respective end portions pin-jointed with respective end portions of said horizontal members, said frame being arranged surrounding said plurality of tie bars with a small gap being maintained between said frame and said plurality of tie bars, a moving and positioning means linking said frame to said fixed platen or movable platen and moving said frame to be positioned at a predetermined position and a lateral clamping means provided on each of said two vertical members to push a side face of said fixed mold or movable mold. 3. A mold clamping apparatus as claimed in claim 1, wherein at least one pair of said lateral clamping means, being opposed to each other, are provided on respective central portions of said pair of supports. 4. A mold clamping apparatus as claimed in claim 1, wherein said lateral clamping means is constructed by one of a hydraulic cylinder, electric type screw jack, toggle device and cam mechanism. 5. A mold clamping apparatus as claimed in claim 1, wherein said lateral clamping means is constructed by a hydraulic cylinder comprising a cylinder rod so that a side face of said mold is pushable by a terminal end portion of said cylinder rod. 6. A mold clamping apparatus as claimed in claim 1, wherein said side pusher is constructed movably between a predetermined lateral clamping position where the side face of said mold is pushed by said lateral clamping means and a stand-by position near said fixed platen or movable platen side where said side pusher is retracted from said lateral clamping position so as not to obstruct a mold exchange work. 7. A mold clamping apparatus as claimed in claim 6, wherein said side pusher has such a width directional size that said side pusher is received more on said fixed platen or movable platen side than a mold fitting face of said fixed platen or movable platen or a mold fitting face of a mold fixing member fitted to said fixed platen or movable platen. 8. A mold clamping apparatus as claimed in claim 1, wherein one or both of said fixed platen and movable platen include a die plate comprising a wall portion, projection projecting from said wall portion, mold fixing portion of a terminal end of said projection and plurality of ribs connecting between said projection and wall portion. 9. An injection molding machine comprising an injection unit and mold clamping apparatus, wherein said mold clamping apparatus is a mold clamping apparatus as claimed in claim 1. 10. An injection molding method using a mold clamping apparatus as claimed in claim 1, comprising the steps of: carrying out a mold clamping by the mold clamping means of said mold clamping apparatus so that the mold comprising said fixed mold and movable mold is clamped together at a mold mating face and pushing both side faces of said fixed mold or movable mold of the mold so clamped by said side pusher so that said fixed mold or movable mold is laterally clamped and, in this state, injecting a molten resin into a mold cavity from an injection unit so that an injection molded article is produced. 11. A mold clamping apparatus as claimed in claim 2, wherein at least one pair of said lateral clamping means, being opposed to each other, are provided on respective central portions of said two vertical members. 12. A mold clamping apparatus as claimed in claim 2, wherein said lateral clamping means is constructed by one of a hydraulic cylinder, electric type screw jack, toggle device and cam mechanism. 13. A mold clamping apparatus as claimed in claim 3, wherein said lateral clamping means is constructed by one of a hydraulic cylinder, electric type screw jack, toggle device and cam mechanism. 14. A mold clamping apparatus as claimed in claim 2, wherein said lateral clamping means is constructed by a hydraulic cylinder comprising a cylinder rod so that a side face of said mold is pushable by a terminal end portion of said cylinder rod. 15. A mold clamping apparatus as claimed in claim 3, wherein said lateral clamping means is constructed by a hydraulic cylinder comprising a cylinder rod so that a side face of said mold is pushable by a terminal end portion of said cylinder rod. 16. A mold clamping apparatus as claimed in claim 2, wherein said side pusher is constructed movably between a predetermined lateral clamping position where the side face of said mold is pushed by said lateral clamping means and a stand-by position near said fixed platen or movable platen side where said side pusher is retracted from said lateral clamping position so as not to obstruct a mold exchange work. 17. A mold clamping apparatus as claimed in claim 3, wherein said side pusher is constructed movably between a predetermined lateral clamping position where the side face of said mold is pushed by said lateral clamping means and a stand-by position near said fixed platen or movable platen side where said side pusher is retracted from said lateral clamping position so as not to obstruct a mold exchange work. 18. A mold clamping apparatus as claimed in claim 4, wherein said side pusher is constructed movably between a predetermined lateral clamping position where the side face of said mold is pushed by said lateral clamping means and a stand-by position near said fixed platen or movable platen side where said side pusher is retracted from said lateral clamping position so as not to obstruct a mold exchange work. 19. A mold clamping apparatus as claimed in claim 5, wherein said side pusher is constructed movably between a predetermined lateral clamping position where the side face of said mold is pushed by said lateral clamping means and a stand-by position near said fixed platen or movable platen side where said side pusher is retracted from said lateral clamping position so as not to obstruct a mold exchange work. 20. A mold clamping apparatus as claimed in claim 2, wherein one or both of said fixed platen and movable platen include a die plate comprising a wall portion, projection projecting from said wall portion, mold fixing portion of a terminal end of said projection and plurality of ribs connecting between said projection and wall portion.
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