GB2500629A - Molding Method Of A Heat Dissipating Cover For Spherical Light Source - Google Patents
Molding Method Of A Heat Dissipating Cover For Spherical Light Source Download PDFInfo
- Publication number
- GB2500629A GB2500629A GB1205379.9A GB201205379A GB2500629A GB 2500629 A GB2500629 A GB 2500629A GB 201205379 A GB201205379 A GB 201205379A GB 2500629 A GB2500629 A GB 2500629A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heat dissipating
- semi
- finished product
- molding
- light source
- Prior art date
- 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.)
- Withdrawn
Links
- 238000000465 moulding Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 53
- 239000011265 semifinished product Substances 0.000 claims abstract description 43
- 238000000576 coating method Methods 0.000 claims abstract description 22
- 238000005520 cutting process Methods 0.000 claims abstract description 20
- 239000011248 coating agent Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 239000000047 product Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/001—Shaping combined with punching, e.g. stamping and perforating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
A molding method of a heat dissipating cover for a spherical light source e.g. a high powered LED light source includes cutting process, impact molding process, chamfering process, and coating process. A thermal conducting sheet is transformed into a semi-finished product by the impact molding process, and then the semi-finished product is curved and smoothed by the chamfering process in order to form a desired flowerpot or cup shape. In this way, the manufacturer can save time and money to produce an effective heat sink.
Description
MOLDING METHOD OF A HEAT DISSIPATING COVER FOR
SPHERICAL LIGHT SOURCE
1. Field of the Invention
The present invention relates to a molding method of a heat dissipating cover, more particularly to a molding method of a heat dissipating cover for spherical light source.
2. Description of Related Art
With the development of high efficiency and high power LEDs, it has become possible to use LEDs in lighting and illumination. Replacement light bulbs have been made, as well as dedicated fixtures and LED lamps. LEDs are used as street lights and in other architectural lighting where color changing is used. However, light emitting efficiency of the LED lamp is easily affected by heat, particularly under high power of the electric current for a long time, the color performance becomes unstable. In addition, most of the electrical elements are damaged easily in the high temperature environment. How to design an efficient heat sink for the LED lamp becomes an important issue in this field.
The conventional heat dissipating devices are using several thermal conducting fins which are disposed around a light source, 111cc light bulbs or LED module. The thermal conducting fins are often radially aligned, such that the heat can be conducted to the thermal conducting fins and dissipated into the air. The thermal conducting fins provide a lot of contacting area for the flowing air, and each of thermal conducting fins is made from materials with high thermal conductivity, such as copper, aluminum, and aluminum-alloys. Thus, the heat is dissipated into the air quickly via the thermal conducting fins. The thermal conducting fins can be thither bent for increasing contacting area with the air.
Unfortunately, the cost of the copper, aluminum, and aluminum-alloys becomes so expensive day after day that the thermal conducting fins become more expensive to be manufactured. In addition, the row materials are often molded by the injection molding process, in which the products of the thermal conducting fins are unitary; thus it is not suitable to the various lamps or illuminants. Finally, to produce one bending thermal conducting fin with rigid structure is not easy on the assembly line. The present invention has arisen to mitigate and/or obviate the disadvantages of the conventional.
The main objective of the present invention is to provide an improved molding method of a heat dissipating cover for spherical light source.
To achieve the objective, a molding method of a heat dissipating cover for spherical light source comprises Cutting process: a cutting sheet is cut from a thermal conducting sheet; Impact molding process: the cutting sheet is placed on an impact molding machine; the impact molding machine comprises a top-nloldillg part and a bottom-molding part; a semi-finished product is made by the top-molding part pressing the cutting sheet into the bottom-molding part; the semi-finished product is formed as a flowerpot or a cup; Chamfering process: the semi-finished product is fastened in a chamfering machine at first, thereafter the semi-finished product is chamfered by rolling rollers of the chamfering machine; Coating: take out the semi-finished product after the chamfering process, and then clean the inner and outer surfaces of the semi-finished product; thereafter heat dissipating coatings are uniformly coated on the inner and outer surfaces of the semi-finished product; after the heat dissipating coatings are drying, a heat dissipating cover is finished.
The material of the thermal conducting sheet is aluminum-alloys in tile cutting process.
The shape of the top-molding part and the bottom-molding part are changeable rather than unitary.
The impact molding process and the chamfering process could be circling until the semi-finished product would be formed as desired as possible before entering into the coating process.
The heat dissipating coating is made from resins with high thermal conductivity in the coating process.
In the drawings: Fig. 1 is a flowchart of a molding method of a heat dissipating cover for spherical light source in accordance with the present invention; Fig. 2 is a perspective view for showing a cutting process; Fig. 3 is a side view for showing an initial stage of a first impact molding process; Fig. 4 is a side view for showing a final stage of the first impact molding process; Fig. 5 is a side view for showing an initial stage of a second impact molding process; Fig. 6 is a side view for showing a final stage of the second impact molding process; Fig. 7 is a side view for showing a semi-finished product to be fastened in a chamfering machine; Fig. 8 is a side view for showing the semi-finished product to be chamfered by rollers; Fig. 9 is a side view of the semi-finished product after the chamfering process; Fig. 10 is a side view of tile heat dissipating cover after the coating process; Fig. Ii is a perspective view of the heat dissipating cover after the coating process; and Fig. 12 is a perspective view for showing a spherical light source assembled to the heat dissipating covet Referring to Fig. 1, a molding method of a heat dissipating cover for spherical light source in accordance with the present invention comprises the following processes: Cutting process: a cutting sheet (2) is cut from a thermal conducting sheet (1) as shown in Fig. 2 (In Fig. 2, the cutting sheet (2) is a circular sheet, but the circular shape is not necessary hi the present invention); Impact molding process: tile cutting sheet (2) is placed on an impact molding machine (3). The impact molding machine (3) comprises a top-molding part (31) and a bottom-molding part (32). Referring to Figs. 3-6, a semi-finished product (4) is made by the top-molding part (31) pressing the cutting sheet (2) into the bottom-molding part (32), wherein the top-molding part (31) should not completely move into the bottom-molding part (32), otherwise the cutting sheet (2) might be broken or the semi-finished product (4) might become too flat. The semi-finished product (4) is formed as a flowerpot or a cup; Chamfering process: the senn-finished product (4) is fastened on a bottom block (62) at first, thereafter the semi-finished product (4) is chamfered by rolling rollers (63) of a chamfering machine 6 as shown in Figs. 7-8; Coating: take out the semi-finished product (4) after the chamfering process, and then clean the inner and outer surfaces of the semi-finished product (4). Thereafter, heat dissipating coatings (7) are uniformly coated on the inner and outer surfaces of the semi-finished product (4). After the heat dissipating coatings (7) are drying, a heat dissipating cover (8) is finished as shown in Figs. 10-11.
The conventional thermal conducting fins are replaced by the heat dissipating cover (8) which is made by the above process, and the heat dissipating cover (8) can help light source to dissipate heat into the air quickly.
In the cutting process, the material of the thermal conducting sheet (1) is aluniinum-alloys.
In the impact molding process, the impact molding process comprises a first impact molding process and a second impact molding process. The first impact molding process is that the top-molding part (3 1) presses the cutting sheet (2) downwardly into the bottom-molding part (32) as shown in Figs. 3-4.
After the first impact molding process, the semi-finished product (4) is bent downwardly to form a flowerpot or a cup. The semi-finished product (4) is taking out and an opening of the semi-finished product (4) is placed downward for entering the second impact molding process. In the second impact molding process, the opening of the semi-finished product (4) is supported by a molding block (5), and the semi-finished product (4) is placing in another bottom-molding part (32) which has different shape from the bottom-molding part (32) of the first impact molding process as shown hi Fig. 5. Thereafter, another top-molding part (31) which has different shape from the top-molding part (31) of the first impact molding process presses the top side of the semi-finished product (4) downwardly to the molding block (5) with a constant depth to forni the semi-finished product (4) as shown in Fig. 6. Therefore, the semi-finished product (4) has two depressions on the top and bottom sides.
In the chamfering process, a top block (61) and the bottom block (62) clamp the semi-finished product (4) tightly in the impact molding machine (6) as shown in Fig. 7. The rollers (63) of the chamfering machine (6) are roiling on the peripheral of the semi-finished product (4) from up to down, so that the senii-finished product (4) is necking as shown hi Fig. 8. The rolling rollers (63) fttrther makes the peripheral of the semi-finished product (4) be curving. The total area of the curving semi-finished product (4) is larger than the original semi-finished product (4) in order to increase the contacting area with the air as shown in Fig. 9.
In the coating process, the heat dissipating coating (7) is not only to dissipate heat, but also to smooth the surface of the semi-finished product (4) as show in Figs. 10-il. The heat dissipating coating (7) is made from boron nitride, BN-cermets, nano-materials with high thermal conductivity, or resins with high thermal conductivity.
Referring to Fig. 12, the heat dissipating cover (8) can make the spherical light source (9) to dissipate heat into the air quickly.
Besides, the impact molding process and the chamfering process could be circling until the semi-finished product (4) would be formed as desired as possible before entering into the coating process.
Claims (7)
- Claim(s) 1. A molding method of a heat dissipating cover for spherical light source comprising: Cutting process: a cutting sheet (2) is cut from a thermal conducting sheet (I); Impact molding process: the cutting sheet (2) is placed on an impact molding machine (3); the impact molding machine (3) comprises a top-molding part (31) and a bottom-molding part (32); a semi-finished product (4) is made by the top-molding part (31) pressing the cutting sheet (2) into the bottom-molding part (32); the semi-finished product (4) is formed as a flowerpot or a cup; Chamfering process: the semi-finished product (4) is fastened in a chamfering machine (6) at first, thereafter the semi-finished product (4) is chamfered by rolling rollers (63) of the chamfering machine (6); Coating: take out the semi-finished product (4) after the chamfering process, and then clean the inner and outer surtitces of the semi-finished product (4); thereafter heat dissipating coatings (7) are uniformly coated on the inner and outer surfaces of the semi-finished product (4); after the heat dissipating coatings (7) are drying, a heat dissipating cover (8) is finished.
- 2. The molding method of a heat dissipating cover for spherical light source as claimed in claim 1, wherein the material of the thermal conducting sheet (I) is aluminum-alloys in the cutting process.
- 3. The molding method of a heat dissipating cover for spherical light source as claimed in claim 1, wherein the shape of the top-molding part (31) and the bottom-molding part (32) are changeable rather than unitary.
- 4. The molding method of a heat dissipating cover for spherical lightSsource as claimed in claim 1, wherein the impact molding process and the chamfering process could be circling untii the semi-finished product (4) would be formed as desired as possible before entering into the coating process.
- 5. The heat dissipating device for lamps made by the method claimed in claim 1, wherein the heat dissipating coating (7) is made from resins with high thermal conductivity in the coating process.
- 6. A molding method substantially as hereinbefore described with reference to the accompanying drawings.
- 7. A heat dissipating device made by the method of Claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1205379.9A GB2500629A (en) | 2012-03-27 | 2012-03-27 | Molding Method Of A Heat Dissipating Cover For Spherical Light Source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1205379.9A GB2500629A (en) | 2012-03-27 | 2012-03-27 | Molding Method Of A Heat Dissipating Cover For Spherical Light Source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201205379D0 GB201205379D0 (en) | 2012-05-09 |
| GB2500629A true GB2500629A (en) | 2013-10-02 |
Family
ID=46087200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1205379.9A Withdrawn GB2500629A (en) | 2012-03-27 | 2012-03-27 | Molding Method Of A Heat Dissipating Cover For Spherical Light Source |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2500629A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1364879A (en) * | 1970-11-24 | 1974-08-29 | Reynolds Metals Co | Manufacture of a nestable container |
| SU517357A1 (en) * | 1974-03-18 | 1976-06-15 | Предприятие П/Я Р-6543 | The method of manufacturing sleeves |
| US6036043A (en) * | 1996-05-21 | 2000-03-14 | Rasselstein Hoesch Gmbh | Easily-opened can lid |
| JP2005066635A (en) * | 2003-08-22 | 2005-03-17 | Kobayashi Kinzoku Kogyo Kk | Method for manufacturing metallic parts having spring property |
| US20080072644A1 (en) * | 2006-09-21 | 2008-03-27 | Hirotec America, Inc. | Integrated, automated, variable sheet metal forming and assembly system |
-
2012
- 2012-03-27 GB GB1205379.9A patent/GB2500629A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1364879A (en) * | 1970-11-24 | 1974-08-29 | Reynolds Metals Co | Manufacture of a nestable container |
| SU517357A1 (en) * | 1974-03-18 | 1976-06-15 | Предприятие П/Я Р-6543 | The method of manufacturing sleeves |
| US6036043A (en) * | 1996-05-21 | 2000-03-14 | Rasselstein Hoesch Gmbh | Easily-opened can lid |
| JP2005066635A (en) * | 2003-08-22 | 2005-03-17 | Kobayashi Kinzoku Kogyo Kk | Method for manufacturing metallic parts having spring property |
| US20080072644A1 (en) * | 2006-09-21 | 2008-03-27 | Hirotec America, Inc. | Integrated, automated, variable sheet metal forming and assembly system |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201205379D0 (en) | 2012-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2010005796A3 (en) | Method of forming led-based light and resulting led-based light | |
| CN103939870A (en) | Cooling fin suitable for high-power LED lamp heat radiator | |
| WO2009157703A3 (en) | Led luminaire and manufacturing method for same | |
| CN201944634U (en) | Bulb-type LED lamp with heat dissipation structure | |
| CN201983034U (en) | LED (light-emitting diode) claw-shaped radiating bulb lamp | |
| GB2500629A (en) | Molding Method Of A Heat Dissipating Cover For Spherical Light Source | |
| US20130248156A1 (en) | Molding method of a heat dissipating cover for spherical light source | |
| CN201582660U (en) | LED spot lamp | |
| CN202017973U (en) | Projector light | |
| CN204986715U (en) | Outdoor high -power LED street lamp | |
| WO2015180400A1 (en) | Wide-angle luminous led bulb with cooling flue | |
| CN204403974U (en) | A kind of bathroom water-proof LED lamp | |
| CN205388233U (en) | Module actinic light source lamps and lanterns | |
| CN104595781A (en) | Plant growth lamp design method | |
| CN203656667U (en) | Light-emitting diode (LED) lamp | |
| CN202048416U (en) | LED lamp with better radiating effect | |
| CN203690299U (en) | Plugging type LED fluorescent crystal sheet and LED lamp | |
| CN204176579U (en) | A LED ceiling lamp holder | |
| CN202303080U (en) | LED (light-emitting diode) down lamp | |
| CN203215630U (en) | Heat dissipation structure of street lamps | |
| CN203202753U (en) | Led lamp | |
| CN202546320U (en) | A kind of LED light bulb | |
| US20130242563A1 (en) | Heat dissipating device for lamps | |
| KR20110005234U (en) | Flood plate for LED lighting apparatus | |
| CN102155724A (en) | Lamps and their cooling modules |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |