CN100999374A - Demoulding mechanism and demoulding method - Google Patents
Demoulding mechanism and demoulding method Download PDFInfo
- Publication number
- CN100999374A CN100999374A CNA2006100329103A CN200610032910A CN100999374A CN 100999374 A CN100999374 A CN 100999374A CN A2006100329103 A CNA2006100329103 A CN A2006100329103A CN 200610032910 A CN200610032910 A CN 200610032910A CN 100999374 A CN100999374 A CN 100999374A
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- Prior art keywords
- fine needle
- goods
- mould
- mould emptier
- softening temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
This invention provides a demould mechanism, used for separate product from the mold that made by molding. It includes at least one thin needle for demoulding, fixing furniture for fixing the thin needle, and heating elements for heating the needle. The invention also provides the way of using this demould mechanism.
Description
[technical field]
The present invention relates to a kind of mould emptier of mould, especially relate to the mold releasability mechanism and the release method thereof of molded glass goods.
[background technology]
At present, in products such as electronics, automobile, motor, electrical equipment, instrument, household electrical appliances and communication, 70%～90% component all will rely on the die forming manufacturing, and mould has become an industrial visual plant.
Mould is widely used in the compression molding processing procedure, especially for making the opticglass product, as aspheric surface glass lens, globe lens, prism etc., adopt direct compression molding (Direct Press-molding) but the high-quality opticglass product of technology direct production.This kind technology has following characteristics: (1) production efficiency height, be convenient to realize specialization and automatic production; (2) product size precision height, good reproducibility; (3) product surface that is obtained is bright and clean, need not secondary modification; (4) can the baroque goods of once shaped; (5) can realize producing in batches, cost is cheap relatively.
The frequent at present compression-moulding methods that adopts, be in the environment of non-oxidizing atmosphere, with glass and mould heat temperature raising together near glass transition temperature, roughly be under the uniform temp condition at glass and mould, utilize mould that glass is exerted pressure, keeping cooling cooling under the state of being exerted pressure, can obtain glasswork after the demoulding.
In the past, the release method of this kind compression molding was to be undertaken by mode, the mode that attracts or blow of bleeding that rubber hammer beats.But the mold pressing surface of mould mould when moulding and pressing are easy to generate and cohere phenomenon.Therefore, when carrying out the demoulding by described release method, its strength of beaing, the magnetism when bleeding or air blowing power all are not easy control, cause that strength is too small then can't carry out the demoulding, and strength is excessive then might damage pressing.
In view of this, provide a kind of mould emptier and release method thereof of mould, it can realize moulded product is broken away from from mould easily, and guarantees that pressing is not damaged, and enhances productivity and product efficiency.
[summary of the invention]
To a kind of mould emptier and release method thereof be described with specific embodiment below.
A kind of mould emptier is used for making by the molded goods of a mould breaking away from from this mould, and this mould emptier comprises the fine needle that at least one demoulding use, the heating unit that is used for the holding unit of this fine needle of fixing and is used to heat this fine needle.
And a kind of release method, it may further comprise the steps: after (a) using mould compression molding goods, the fine needle of mould emptier is inserted into the edge section of these goods when goods are softening; (b) cool off these goods to softening temperature, make this fine needle be fixed on the edge part office of these goods; (c) use external force to spur this fine needle, goods are broken away from from mould; (d) heat this fine needle and make its temperature be higher than the softening temperature of goods, make the local softening that goods contact with fine needle, fine needle is extracted from goods.
Compared with prior art, described a kind of mould emptier and release method, it can realize moulded product is broken away from from mould easily, and guarantees that pressing is not damaged, and enhances productivity and the product yield.
[description of drawings]
Fig. 1 is the view before mould emptier inserts goods.
Fig. 2 is the partial enlarged drawing of holding parts and fine needle among Fig. 1.
View when Fig. 3 is mould emptier insertion goods.
Fig. 4 is that mould emptier is fixed in the goods and the view when making goods break away from mould.
Fig. 5 is the goods synoptic diagram after the demoulding.
[embodiment]
To be described in further detail the embodiment of the invention below in conjunction with accompanying drawing.
See also Fig. 1 and Fig. 2, the mould emptier that the embodiment of the invention provides is used for making by the following die 30 of the molded goods 20 of a mould from this mould and breaks away from, and this mould emptier comprises a pair of fine needle 10 and fixes the holding unit of this fine needle 10.This holding unit comprises a support 12 and a pair of holding parts 14.
This fine needle 10 comprises threaded portion, head 102 and afterbody 103.Wherein, the outside surface of this threaded portion is formed with outside screw 101, and this head 102 and afterbody 103 are formed at the both sides of this threaded portion and coupled, and this afterbody 103 is used to insert the edge section 201 of goods 20.This fine needle 10 can be selected materials such as silicon carbide, wolfram varbide for use, or other materials high temperature resistant and that do not react with goods raw material such as glass, and the softening temperature of its material is higher than the softening temperature of goods raw material.
This support 12 is used to support this holding parts 14, and this holding parts 14 is used for this fine needle 10 of fixing.This holding parts 14 roughly is cylindric, and its inside is formed with cavity 142, and is formed with internal thread 141 on its terminal inwall.This internal thread 141 is complementary with the outside screw 101 of described fine needle 10, and this fine needle 10 can be retained in this holding parts 14 by thread fit.The head 102 of these cavity 142 usefulness and ccontaining described fine needle 10.The quantity of this holding parts 14 can be complementary with the quantity of this fine needle 10.This holding parts 14 select resistant to elevated temperatures thermally conductive material for use, the softening temperature of its material is higher than the softening temperature of goods raw material.
This mould emptier further comprises heating unit and the power supply 16 that uses for this heating unit.This heating unit is used to heat described fine needle 10, and heating unit is optional with resistance wire or infrared heat reservoir.Select for use resistance wire 104 as heating unit in the present embodiment, and it is wrapped in the outside surface of the head 102 of fine needle 10, and the resistance wire 104 of drawing is connected with power supply 16.Certainly, outside screw 101 can be formed on the outside surface of head 102, resistance wire 104 is wrapped in and head 102 and afterbody 103 between part, correspondingly, the structure of holding parts 14 matched with the structure of this fine needle 10 to form to get final product.Also resistance wire 104 can be provided on the holding unit, on the outside surface that can be wrapped in holding parts 14.At this moment, can utilize the high thermal conductivity of holding unit and fine needle 10 materials, the heat passage fine needle 10 of giving with resistance wire 104 produces rises its temperature rapidly.In addition, when selecting infrared heat reservoir for use, infrared heat reservoir can be provided with separately, and get final product from this this fine needle 10 of fine needle 10 outside direct heating need be to fine needle 10 heating the time as heating unit.
Knockout course below in conjunction with pressing 20 describes the method for using this mould emptier to carry out the demoulding in detail.
Please in the lump referring to Fig. 1 to Fig. 5, the mould that is used for die forming can comprise that upper cores (figure does not show) reaches die 30 down.The work in-process of moulded product are placed down on the die 30 and to this mould heat, when Heating temperature reaches the softening temperature of this molding raw material, its raw material will be softened.At this moment, press down this upper cores it is cooperated with this time die 30, can between upper cores and following die 30, form required goods 20.Shifting out upper cores places on this time die 30 20 in these goods.Present embodiment is an example with molded glass lens goods 20, describes the release method that these glass lens goods 20 break away from this mould in detail.
(a) behind the use one mould compression molding goods 20, when goods 20 soften, the fine needle 10 of mould emptier is inserted into the edge part 201 of these goods 20.Promptly after goods 20 compression moldings, carry out this insert action under the condition of the softening temperature of temperature goods 20 raw materials when keeping molded.Because goods 20 do not influence the optical property of these lens as the edge part 201 of lens, so select the as close as possible edge section of goods 20 that these fine needle 10 insertions are got final product.Can make this fine needle 10 run through this goods 20, also can insert the segment thickness of goods 20.Its softening range generally was 500～700 degrees centigrade when goods 20 raw materials of selecting for use in the present embodiment were glass, and is also different according to different its softening temperatures of the raw material type of goods 20 certainly.
(b) cool off these goods 20 to softening temperature, make this fine needle 10 be fixed on the edge section 201 of these goods 20.After being inserted into fine needle 10 in the goods 20 according to above-mentioned steps, it is the temperature decline of glass lens that the temperature of cooling off this mould makes the goods 20 that place down in the die 30, thereby makes this fine needle 10 at these refrigerative goods 20 internal fixing.In the present embodiment temperature approximately being dropped to 50 degrees centigrade can be fixed on fine needle 10 in these goods 20.
(c) use external force to spur this fine needle 10, goods 20 are broken away from from the following die 30 of mould.In the present embodiment, because this fine needle 10 is fixed in these goods 20, when therefore moving up this holding unit by pulling force, this fine needle 10 and goods 20 (as glass lens) will move up together, thereby make this glass lens break away from described mould, finish the demoulding.
(d) heat this fine needle 10 and make its temperature be higher than the softening temperature of goods 20 raw materials, make the local softening that goods 20 contact with fine needle 10, fine needle 10 is extracted from goods 20.In the present embodiment, to place lens such as pallet to put device by the goods 20 that step (c) broken away from described mould, and the thermal source element that utilization is wrapped on fine needle 10 heads 102 is that 104 pairs of these fine needles 10 of resistance wire heat, make it reach the softening temperature that is not less than goods 20 raw materials, the local softening that the edge section 201 that makes goods 20 is contacted with fine needle 10, thereby fine needle 10 can be extracted from goods 20, and be obtained goods 20.Certainly, when selecting for use other resistance wire 104 to set mode, as this resistance wire 102 is provided on the holding parts 14 of holding unit, the high thermal conductivity that then utilizes holding unit and fine needle 10 plays the effect of this fine needle 10 of indirect heating rapidly with this fine needle 10 of heat transferred.Because it is the heat-transfer rate of glass that the heat-transfer rate of holding unit and fine needle 10 materials is higher than goods 20 raw materials, therefore, this kind heat-processed can not cause the softening or distortion of goods 20 integral body, and only can cause the part that is inserted with fine needle 10 to be softened, so can extract this fine needle 10, obtain required goods 20 from the edge section that these goods 20 are glass lens.
The type, shape and the material that are appreciated that described fine needle and holding unit are not limited in the scope of described embodiment, as long as this holding unit is realized the purpose of this fine needle of fixing.As this holding unit can be set to have the structure of at least one pair of relative movable retaining piece, can clamp the fine needle of different thicknesses by the spacing of adjusting this retaining piece.Also fine needle directly can be fixed on holding parts by welding process.
Be appreciated that described type of heating also is not limited in the cited scope,, make its temperature reach the softening temperature that is higher than the goods raw material and get final product as long as can directly or indirectly heat to described fine needle.
In addition, those skilled in the art also can do other variation in spirit of the present invention, as long as it does not depart from implementation result of the present invention.The variation that these are done according to spirit of the present invention all should be included within the present invention's scope required for protection.
Claims (10)
1. a mould emptier is used for making by the molded goods of a mould breaking away from from this mould, and this mould emptier comprises the fine needle that at least one demoulding use, the heating unit that is used for the holding unit of this fine needle of fixing and is used to heat this fine needle.
2. mould emptier as claimed in claim 1 is characterized in that the material softening temperature of described fine needle and holding unit is higher than the raw-material softening temperature of goods.
3. mould emptier as claimed in claim 1 is characterized in that material selection silicon carbide, the wolfram varbide of described fine needle.
4. mould emptier as claimed in claim 1 is characterized in that described heating unit selects resistance wire and infrared heat reservoir for use.
5. mould emptier as claimed in claim 4 is characterized in that described fine needle comprises a head, and described resistance wire is wrapped in this head outside surface.
6. mould emptier as claimed in claim 1 is characterized in that described fine needle comprises an outside screw, and described holding unit comprises an internal thread, matches by this outside screw and this internal thread, and this fine needle is retained in this holding unit.
7. mould emptier as claimed in claim 1 is characterized in that described holding unit and fine needle fix by welding process.
8. release method, it may further comprise the steps:
After using mould compression molding goods, when goods are softening, the fine needle of mould emptier is inserted into the edge section of these goods;
Cool off these goods to softening temperature, make this fine needle be fixed on the edge part office of these goods;
Use external force to spur this fine needle, goods are broken away from from mould;
Heat this fine needle and make its temperature be higher than the softening temperature of goods, make the local softening that goods contact with fine needle, fine needle is extracted from goods.
9. release method as claimed in claim 8 is characterized in that the softening temperature of described fine needle material is higher than the raw-material softening temperature of goods.
10. release method as claimed in claim 8 is characterized in that the mode that heats described fine needle selects resistance wire type of heating and Infrared Heating mode for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100329103A CN100999374B (en) | 2006-01-12 | 2006-01-12 | Demoulding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100329103A CN100999374B (en) | 2006-01-12 | 2006-01-12 | Demoulding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN100999374A true CN100999374A (en) | 2007-07-18 |
| CN100999374B CN100999374B (en) | 2010-09-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100329103A Expired - Fee Related CN100999374B (en) | 2006-01-12 | 2006-01-12 | Demoulding method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100999374B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423161A (en) * | 2016-01-05 | 2016-03-23 | 东莞轩朗实业有限公司 | Point light source and manufacturing method for lens thereof |
| CN111361102A (en) * | 2020-03-19 | 2020-07-03 | 赵小粉 | Sticking mold separation device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD244103A1 (en) * | 1985-12-09 | 1987-03-25 | Inst Spielzeug Veb | METHOD FOR FORMING ELASTIC SOFT PLASTER BODIES |
| CN2096429U (en) * | 1991-06-26 | 1992-02-19 | 金丰机器工业股份有限公司 | Punch press prepressing type demould apparatus |
| US5820895A (en) * | 1996-06-04 | 1998-10-13 | Johnson & Johnson Vision Products, Inc. | Conductive probe for heating contact lens mold assemblies during demolding |
| EP1384535A1 (en) * | 2002-07-25 | 2004-01-28 | Harald Weigelt | Stripper |
-
2006
- 2006-01-12 CN CN2006100329103A patent/CN100999374B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423161A (en) * | 2016-01-05 | 2016-03-23 | 东莞轩朗实业有限公司 | Point light source and manufacturing method for lens thereof |
| WO2017118384A1 (en) * | 2016-01-05 | 2017-07-13 | 广东轩朗实业有限公司 | Point light source and method for preparing lens thereof |
| CN111361102A (en) * | 2020-03-19 | 2020-07-03 | 赵小粉 | Sticking mold separation device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100999374B (en) | 2010-09-29 |
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