CN101890789A - Beryllium copper gasket for needle valve type preform mould and application and using method thereof - Google Patents
Beryllium copper gasket for needle valve type preform mould and application and using method thereof Download PDFInfo
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- CN101890789A CN101890789A CN2010102334865A CN201010233486A CN101890789A CN 101890789 A CN101890789 A CN 101890789A CN 2010102334865 A CN2010102334865 A CN 2010102334865A CN 201010233486 A CN201010233486 A CN 201010233486A CN 101890789 A CN101890789 A CN 101890789A
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- beryllium copper
- copper gasket
- valve type
- needle valve
- cast gate
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Abstract
The invention discloses a beryllium copper gasket for a needle valve type preform mould and application and a using method thereof. The center of the beryllium copper gasket (1) is provided with a through hole (2) penetrating the upper and lower surfaces of the beryllium copper gasket (1); the upper part of the through hole (2) is provided with a funneled taper hole (3); the bottom end of the taper hole (3) is provided with an arc transition section (4) for realizing smooth transition between the taper hole (3) and the through hole (2); and the beryllium copper gasket (1) is made of beryllium copper, and has the thickness between 2 and 6mm and the surface roughness between 0.2 and 0.8 mu m. The beryllium copper gasket has the advantages of making the sprue of the needle valve type hot runner preform mould smooth without effects such as wire pulling and evacuation, and improving product quality.
Description
Technical field
The present invention relates to a kind of pad and uses thereof and using method, especially for the beryllium copper gasket of needle valve type preform mould and uses thereof and using method.
Background technology
Plastic bottle has been applied to medical packaging widely, packaging for foodstuff, beverage, in the every field such as chemical industry, existing medical packaging class plastic bottle great majority are to adopt the PP material to plastify bottle embryo blowing to form, PP bottle embryo must rely on the mould plasticizing to be shaped just can become product, and the injection molding mould adopts needle valve type hot runner mould technology usually at present, such as, the patent No. 200520119570.9, patent name is that the needle valve type hot runner mould has just provided so a kind of needle valve type hot runner mould structure, the liquid plastics stream of pointing out hot mouth runner flows out under pressure, plastics are entered in the product mold die cavity, but because of medical packaging class PP bottle embryo product structure special, the cast gate material is thick, its big end is Φ 4.5mm, small end is Φ 4.0mm, highly be 8mm, according to traditional design, thick material is being difficult for being cooled, the easy wire drawing in cast gate place, find time to wait the cast gate defective, secondly in injection process, because injection volume control is inaccurate, occur the too close problem of product molecules align easily, have a strong impact on the quality of a collection of product in the bottle blowing process even whole production line.
What existing technology adopted is the mode that directly contacts at hot mouth and product mold die cavity, after the process that needle moves upward, stream of plastic in the hot mouth runner flows under the effect of pressure in the product mold die cavity, and cast gate does not obtain that good cooling causes the easy wire drawing in cast gate place, defective such as find time.
Summary of the invention
Purpose of the present invention promptly is to address the deficiencies of the prior art, a kind of beryllium copper gasket that is used for needle valve type hot flow path preform mould is provided, adopt this beryllium copper gasket, cast gate is smooth, cast gate defect problem such as can solve wire drawing, find time, improve the quality of entire product, and this beryllium copper gasket has rational in infrastructurely, characteristic of simple is installed.
Another object of the present invention provides the purposes and the using method of the beryllium copper gasket that is used for needle valve type hot flow path preform mould.
The objective of the invention is to be achieved through the following technical solutions: a kind of beryllium copper gasket that is used for needle valve type preform mould, described beryllium copper gasket is circular, central authorities at beryllium copper gasket are provided with a through hole that penetrates upper and lower surface, after the process that needle moves upward, stream of plastic in the hot mouth runner flows in the product mold die cavity by this through hole under the effect of pressure, the top of through hole is the funnelform bellmouth of being convenient to the needle guiding, the tapering of this bellmouth is 10 °～60 °, the bottom of bellmouth is provided with the arc-shaped transition section, the arc-shaped transition section realizes the smooth transition of bellmouth and through hole, the arc radius R of arc-shaped transition section is 0.1～0.5mm, make the needle guiding more smooth and easy, beryllium copper gasket is made by beryllium copper simultaneously, the thickness t of beryllium copper gasket is 2～6mm, beryllium copper is a kind of mechanical performance, physical property, the non-ferrous alloy of chemical property and etch resistant properties good combination, after solid solution and Ageing Treatment, have the high strength limit suitable with special steel, elastic limit, yield limit and fatigue limit, possess again simultaneously high conductance is arranged, thermal conductivity, high rigidity and wearability, high creep resistance and corrosion resistance, this be guarantee product from outward appearance to the physical dimension high-quality, the mould high-quality, long-life prerequisite and basis, the beryllium copper gasket surface roughness is 0.2～0.8 μ m, make the contact-making surface of beryllium copper gasket and product mold more smooth, guaranteed the smooth of cast gate place.
Be used for the using method of the beryllium copper gasket of needle valve type preform mould, it may further comprise the steps:
(1) prepares: according to the size that the cast gate and the hot mouth runner size of mold cavity are selected beryllium copper gasket, check the cast gate of mold cavity and the surface of beryllium copper gasket, guarantee the cast gate of mold cavity and any surface finish of beryllium copper gasket;
(2) install: beryllium copper gasket is installed in the cast gate place of mold cavity, and allowing has the one side of through hole and the cast gate of mold cavity contacts on the beryllium copper gasket, and the axiality of the cast gate of the through hole of assurance beryllium copper gasket and mold cavity is more than 0.02;
(3) use: check whether beryllium copper gasket on the mold cavity of each needle correspondence is installed smoothly, if beryllium copper gasket has inclination, does suitable adjustment, after the affirmation, then carries out injection process.
The purposes that is used for the beryllium copper gasket of needle valve type preform mould is that the guiding stream of plastic enters mold cavity, the shape of mould die cavity cast gate when condensation, and with the needle cooperation, the closure or openness cast gate also makes mould gate smooth smooth.
The invention has the beneficial effects as follows: after using this beryllium copper gasket, make needle valve type hot flow path preform mould cast gate place smooth smooth, no wire drawing, defective such as find time have improved the quality of product.
Description of drawings
Fig. 1 is a vertical view of the present invention
Fig. 2 be A-A of the present invention to cutaway view
Fig. 3 is the partial enlarged drawing of area B among Fig. 2
Fig. 4 is the schematic diagram of prior art
Fig. 5 is a use schematic diagram of the present invention
Among the figure, 1-beryllium copper gasket, 2-through hole, 3-bellmouth, 4-arc-shaped transition section, 5-needle, 6-mold cavity.
The specific embodiment
Below in conjunction with accompanying drawing the present invention's use is further described.
As Fig. 1, Fig. 2, Fig. 3, a kind of beryllium copper gasket that is used for needle valve type preform mould, described beryllium copper gasket 1 is circular, is provided with a through hole 2 that penetrates upper and lower surface in the central authorities of beryllium copper gasket 1, and the stream of plastic in the hot mouth runner flows in product mold die cavities 6 by this through hole 2 under the effect of pressure, after injection moulding and pressurize finished, needle was closed.The top of through hole 2 is the funnelform bellmouth 3 of guiding when being convenient to needle and closing, the tapering of this bellmouth 3 is 10 °～60 °, the bottom of bellmouth 3 is provided with arc-shaped transition section 4, the smooth transition of arc-shaped transition section real 4 existing bellmouths 3 and through hole 2, the arc radius R of arc-shaped transition section 5 is 0.1～0.5mm mm, can reduce the formation of product internal stress, simultaneously beryllium copper gasket 1 is made by beryllium copper, the thickness t of beryllium copper gasket 1 is 2～6mm, beryllium copper is a kind of mechanical performance, physical property, the non-ferrous alloy of chemical property and etch resistant properties good combination, after solid solution and Ageing Treatment, have the high strength limit suitable with special steel, elastic limit, yield limit and fatigue limit, possess again simultaneously high conductance is arranged, thermal conductivity, high rigidity and wearability, high creep resistance and corrosion resistance, this be guarantee product from outward appearance to the physical dimension high-quality, the mould high-quality, long-life prerequisite and basis, beryllium copper gasket 1 surface roughness is 0.2～0.8 μ m, make beryllium copper gasket 1 more smooth with the contact-making surface of product mold die cavity 6, guaranteed the smooth of cast gate place, the cast gate size coupling of the outer diameter D of beryllium copper gasket 1 and product mold die cavity 6, the inner diameter d of beryllium copper gasket 1 and needle 5 size couplings.
As Fig. 4, what existing technology adopted is the mode that directly contacts at hot mouth and product mold die cavity, after the process that needle 5 moves upward, the stream of plastic in the hot mouth runner flows under the effect of pressure in the product mold die cavity 6, the problem of the easy wire drawing in cast gate place, cast gate defective such as find time.
As Fig. 5, hot flow path needle valve type preform mould behind employing the present invention, stream of plastic in the hot mouth runner flows in the product mold die cavity 6 by through hole 2 under the effect of pressure, beryllium copper gasket 1 is made by beryllium copper, higher hardness and wearability are arranged, simultaneously the roughness on surface guarantees that beryllium copper gasket 1 is more smooth with the contact-making surface of product mold die cavity 6, and good cast gate cooling makes the cast gate place smooth, thereby has avoided the easy wire drawing in cast gate place, the appearance of defective such as find time.
Be used for the using method of the beryllium copper gasket of needle valve type preform mould, it may further comprise the steps:
(1) prepares: according to the size that the cast gate and hot mouth runner needle 5 sizes of mold cavity 6 are selected beryllium copper gasket, check the cast gate of mold cavity 6 and the surface of beryllium copper gasket, guarantee the cast gate of mold cavity 6 and any surface finish of beryllium copper gasket;
(2) install: beryllium copper gasket 1 is installed in the cast gate place of mold cavity 6, and allowing has the one side of through hole 2 and the cast gate of mold cavity 6 contacts on the beryllium copper gasket 1, and the axiality of the cast gate of the through hole 2 of assurance beryllium copper gasket 1 and mold cavity 6 is more than 0.02;
(3) use: check whether beryllium copper gasket 1 on the mold cavity 6 of each needle correspondence is installed smoothly, if beryllium copper gasket 1 has inclination, does suitable adjustment, after the affirmation, then carries out injection process.
The purposes that is used for the beryllium copper gasket of needle valve type preform mould is: the guiding stream of plastic enters mold cavity 6, the shape of mould die cavity 6 cast gates when condensation, and with needle 5 cooperations, the closure or openness cast gate also makes mould gate smooth smooth.
Claims (9)
1. be used for the beryllium copper gasket of needle valve type preform mould, it is characterized in that:
(1) central authorities of described beryllium copper gasket (1) are provided with a through hole (2) that penetrates its upper and lower surface, and the top of through hole (2) is bellmouth (3), and the bottom of bellmouth (3) is provided with arc-shaped transition section (4);
(2) described beryllium copper gasket (1) is made by beryllium copper.
2. according to the described beryllium copper gasket that is used for needle valve type preform mould of claim 1, it is characterized in that: the thickness t of described beryllium copper gasket (1) is 2～6mm.
3. according to the described beryllium copper gasket that is used for needle valve type preform mould of claim 1, it is characterized in that: described beryllium copper gasket (1) is for circular.
4. according to the described beryllium copper gasket that is used for needle valve type preform mould of claim 1, it is characterized in that: described bellmouth (3) is funnel-form.
5. according to the described beryllium copper gasket that is used for needle valve type preform mould of claim 1, it is characterized in that: described beryllium copper gasket (1) surface roughness is 0.2～0.8 μ m.
6. according to the described beryllium copper gasket that is used for needle valve type preform mould of claim 1, it is characterized in that: the tapering of described bellmouth (3) is 10 °～60 °.
7. according to the described beryllium copper gasket that is used for needle valve type preform mould of claim 1, it is characterized in that: the arc radius R of described arc-shaped transition section (4) is 0.1～0.5mm.
8. the using method that is used for the beryllium copper gasket of needle valve type preform mould is characterized in that it may further comprise the steps:
(1) prepares: according to the size that the cast gate and needle (5) size of mold cavity (6) are selected beryllium copper gasket (1), check the cast gate of mold cavity (6) and the surface of beryllium copper gasket (1), guarantee the cast gate of mold cavity (6) and any surface finish of beryllium copper gasket (1);
(2) install: the cast gate place that beryllium copper gasket (1) is installed in mold cavity (6), allowing has the one side of through hole (2) and the cast gate of mold cavity (6) to contact on the beryllium copper gasket (1), and the axiality of cast gate that guarantees the through hole (2) of beryllium copper gasket (1) and mold cavity (6) is more than 0.02;
(3) use: check that whether beryllium copper gasket (1) on the mold cavity (6) of each needle correspondence is installed smoothly, if beryllium copper gasket (1) has inclination then adjusts it, carries out injection process at last.
9. the described beryllium copper gasket that is used for needle valve type preform mould according to claim 1 is used to guide stream of plastic to enter mold cavity (6), the shape of mould die cavity (6) cast gate when condensation, and with needle (5) cooperation, the closure or openness cast gate also makes mould gate smooth smooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102334865A CN101890789A (en) | 2010-07-22 | 2010-07-22 | Beryllium copper gasket for needle valve type preform mould and application and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102334865A CN101890789A (en) | 2010-07-22 | 2010-07-22 | Beryllium copper gasket for needle valve type preform mould and application and using method thereof |
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| CN101890789A true CN101890789A (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102334865A Pending CN101890789A (en) | 2010-07-22 | 2010-07-22 | Beryllium copper gasket for needle valve type preform mould and application and using method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128933A (en) * | 2011-11-28 | 2013-06-05 | 马斯特模具（昆山）有限公司 | Improved structure of hot runner valve disc |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050064062A1 (en) * | 2001-11-26 | 2005-03-24 | S.I.A. Societa' Indrstrializzanione Progettazione Automazione S.P.A | Machines for injection-moulding of plastic material, and corresponding process of implementation |
| CN101722632A (en) * | 2008-10-10 | 2010-06-09 | 马斯特模具（2007）有限公司 | Injection molding valve gated hot runner nozzle |
-
2010
- 2010-07-22 CN CN2010102334865A patent/CN101890789A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050064062A1 (en) * | 2001-11-26 | 2005-03-24 | S.I.A. Societa' Indrstrializzanione Progettazione Automazione S.P.A | Machines for injection-moulding of plastic material, and corresponding process of implementation |
| CN101722632A (en) * | 2008-10-10 | 2010-06-09 | 马斯特模具（2007）有限公司 | Injection molding valve gated hot runner nozzle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128933A (en) * | 2011-11-28 | 2013-06-05 | 马斯特模具（昆山）有限公司 | Improved structure of hot runner valve disc |
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Application publication date: 20101124 |