CN200970879Y - Core fixing device of plastic injection mold - Google Patents
Core fixing device of plastic injection mold Download PDFInfo
- Publication number
- CN200970879Y CN200970879Y CN 200620048271 CN200620048271U CN200970879Y CN 200970879 Y CN200970879 Y CN 200970879Y CN 200620048271 CN200620048271 CN 200620048271 CN 200620048271 U CN200620048271 U CN 200620048271U CN 200970879 Y CN200970879 Y CN 200970879Y
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- Prior art keywords
- core
- mould
- cylinder
- piston
- plastics injection
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a plastic Injection mold, in particular to a core fixing device of the plastic injection mold. The core fixing device of the plastic injection mold provided by the utility modelconsists of a core(1), which is fixed on a molding board of a mold, the core is arranged in a mold cavity(2), the utility model also includes a piston-cylinder(3), the piston-cylinder is arranged on the molding board at the other end of the mold, a cylinder sleeve(31) is props against the mold cavity, the end of a piston rod (32) props the free end of the core; at the bottom of a piston chamber in the cylinder, an opening is arranged for entering the compressed air. The utility model can not deform the core during the process of the Injection molding.
Description
Technical field
The utility model relates to plastics injection mould, relates in particular to a kind of plastics injection mould core fixture.
Background technology
The injection molding technology is widely used in the processing and forming of plastics, and wherein, injection mo(u)lding is of paramount importance a kind of forming method, and design for Injection Mould has formed the subject of a maturation.For some hollow mouldings or have the moulding of thin side opening, in the middle of mould, core should be set.Existing theory is pointed out, in order to guarantee core strength, core must be lacked and be thick as much as possible, but in the middle of the practice, there is the hole of many injecting products very elongated, as small-sized medical injection syringe, just need more elongated core, because core all is that an end is fixed on the template of mould, the other end is cantilever position in mold cavity, and in injection moulding process, the plastic liquid of fusion have very high pressure (＞10MPa), core is caused very high impulsive force, be easy to cause core to produce amount of deflection, cause the hole shape deviation of moulding, waste product occurs.
In order to address the above problem, people adopt some high-intensity alloys to make core, and these alloys often cost an arm and a leg; Simultaneously, all exigent fineness in mold cavity surface, so core also has corresponding requirement, but well-known, the material that intensity is high often means that difficulty of processing is big, so processing cost is also high.For above-mentioned reasons, cause the production cost height of injection mold, directly influence the product price of injection mo(u)lding.Therefore, people begin to think hard from gate placement, be symmetrical arranged cast gate stressed with the balance core as both sides at plastic, but, the cast gate of injection mold has balanced arrangement and non-equilibrium arrangement, the cast gate place melt pressure of non-equilibrium layout is difficult to guarantee consistent, even if the cast gate of balanced arrangement, the pressure that melt arrives each cast gate can not guarantee in full accord, require than higher plastic for those, such pressure differential causes that core flexural deformation causes the plastic distortion to remain unacceptable.
Summary of the invention
Technical problem to be solved in the utility model is existing plastics injection mould core easy deformation, processing difficulties, and the cost height provides a kind of plastics injection mould core fixture.The utility model plastics injection mould core fixture can make core adopt the metal of less expensive to make, and can not deform in injection moulding process.
A kind of core fixture of plastics injection mould, comprise the core that is fixed on template of mould, core is positioned at the die cavity of mould, it also comprises a shaft-like core stop mechanism, described core stop device is installed on the template of the mould other end, and the free end at core is withstood in the end of its bar; Its end is provided with and feeds compressed-air actuated opening.
The core fixture of described plastics injection mould, the cylindrical of described core stop mechanism is provided with circumferential groove, is provided with the core cover in the groove.
The core fixture of described plastics injection mould, described core stop mechanism is a piston type cylinder.
The core fixture of described plastics injection mould, described core stop mechanism is a piston-type hydraulic cylinder.
The core fixture of described plastics injection mould, described core stop mechanism is mechanically operated.
The utility model utilization is provided with a piston type cylinder on the core top, utilize compressed air to keep certain pressure, make cylinder piston withstand the free end of core, thereby core can be out of shape because of the plastic melt impact bending, thereby guaranteed the size and dimension of moulding.
Description of drawings
Fig. 1 is a schematic diagram of the present utility model;
Fig. 2 is an A-A profile among Fig. 1.
The specific embodiment
As depicted in figs. 1 and 2: a kind of core fixture of plastics injection mould, comprise the core 1 that is fixed on template of mould, core 1 is positioned at the die cavity 2 of mould, it also comprises a piston type cylinder 3, described cylinder 3 is installed on the template of the mould other end, its cylinder jacket 31 offsets with die cavity, and the free end at core 1 is withstood in the end of its piston rod 32; Piston chamber's 33 ends of described cylinder are provided with and feed compressed-air actuated opening, when the closed beginning of mould injection moulding, feeding compressed air makes piston rod 32 withstand core 1 free end, and keep-up pressure and be full of die cavity 2 substantially up to the plastic melt that enters die cavity 2, remove compressed air pressure, this moment, core 1 can skin skew distortion.
The outside piston of described cylinder 3 is provided with circumferential groove, is provided with core cover 4 in the groove.
Described cylinder 3 also can be that hydraulic jack or mechanical drive mode drive and replace.
Claims (5)
1. the core fixture of a plastics injection mould, comprise the core that is fixed on template of mould, core is positioned at the die cavity of mould, it is characterized in that, it also comprises a shaft-like core stop mechanism, described core stop device is installed on the template of the mould other end, and the free end at core is withstood in the end of its bar; Its end is provided with and feeds compressed-air actuated opening.
2. the core fixture of plastics injection mould according to claim 1 is characterized in that, the cylindrical of described core stop mechanism is provided with circumferential groove, is provided with the core cover in the groove.
3. the core fixture of plastics injection mould according to claim 1 and 2 is characterized in that, described core stop mechanism is a piston type cylinder.
4. the core fixture of plastics injection mould according to claim 1 and 2 is characterized in that, described core stop mechanism is a piston-type hydraulic cylinder.
5. the core fixture of plastics injection mould according to claim 1 and 2 is characterized in that, described core stop mechanism is mechanically operated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620048271 CN200970879Y (en) | 2006-11-29 | 2006-11-29 | Core fixing device of plastic injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620048271 CN200970879Y (en) | 2006-11-29 | 2006-11-29 | Core fixing device of plastic injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200970879Y true CN200970879Y (en) | 2007-11-07 |
Family
ID=38882135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620048271 Expired - Lifetime CN200970879Y (en) | 2006-11-29 | 2006-11-29 | Core fixing device of plastic injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200970879Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233652A (en) * | 2010-04-22 | 2011-11-09 | 鸿富锦精密工业（深圳）有限公司 | Optical-fiber coupling connector, manufacturing device and manufacturing method |
-
2006
- 2006-11-29 CN CN 200620048271 patent/CN200970879Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102233652A (en) * | 2010-04-22 | 2011-11-09 | 鸿富锦精密工业（深圳）有限公司 | Optical-fiber coupling connector, manufacturing device and manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI KINDLY MEDICAL INSTRUMENTS AUTOMATION INS Free format text: FORMER NAME: SHANGHAI WANDEFU MEDICAL APPARATUS AUTOMATION INST. CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 201803 No. 171 Huajiang Road, Jiangdu Town, Shanghai, Jiading District Patentee after: Shanghai Kangdelai Medical Instrument Co., Ltd. Automation Research Institute Address before: 201803 Shanghai city Jiading District Huajiang Road 668 Lane 5 Patentee before: Shanghai Wandefu Medical Apparatus Automation Inst. Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Jiading District Jiangqiao town 201803 Shanghai Huajiang Road No. 171 Patentee after: Shanghai Kangdelai Medical Instrument Co., Ltd. Automation Research Institute Address before: 201803 No. 171 Huajiang Road, Jiangdu Town, Shanghai, Jiading District Patentee before: Shanghai Kangdelai Medical Instrument Co., Ltd. Automation Research Institute |
|
| CX01 | Expiry of patent term |
Granted publication date: 20071107 |
|
| EXPY | Termination of patent right or utility model |