JPS5761637A - Method of tube bending for circular fluorescent lamp - Google Patents
Method of tube bending for circular fluorescent lampInfo
- Publication number
- JPS5761637A JPS5761637A JP13811180A JP13811180A JPS5761637A JP S5761637 A JPS5761637 A JP S5761637A JP 13811180 A JP13811180 A JP 13811180A JP 13811180 A JP13811180 A JP 13811180A JP S5761637 A JPS5761637 A JP S5761637A
- Authority
- JP
- Japan
- Prior art keywords
- bending
- tube
- drum
- glass tube
- heater
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/04—Re-forming tubes or rods
- C03B23/06—Re-forming tubes or rods by bending
- C03B23/065—Re-forming tubes or rods by bending in only one plane, e.g. for making circular neon tubes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
PURPOSE: When a glass tube is made into a circle to produce a circular fluorescent lamp, a heater is used to heat the outside surface of the tube while it is being bended into a circle around the drum to facilitate the bending and incrase the yield of the product.
CONSTITUTION: Glass tube 1 is set vertically and heated in the heating furnace. When the temperature reaches the softening point, the glass tube is taken out of the furnace and transferred to the processing position while the tube is kept vertical. The glass tube 1 is held at the lowe end with the chuck nails 22 on the bending drum 2 and the drum is made to rotate upward to bend the tube along the curved groove 21 on the drum until the bending is completed at the top end. During the bending operation, the heater 3 is set on the outside of the glass to be bended in the course of the drum coating up to facilitate the bending. The heater 3 heats the outside of the glass tube expanding for bending and prevents the damage and deformation of the tube.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13811180A JPS5761637A (en) | 1980-10-02 | 1980-10-02 | Method of tube bending for circular fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13811180A JPS5761637A (en) | 1980-10-02 | 1980-10-02 | Method of tube bending for circular fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5761637A true JPS5761637A (en) | 1982-04-14 |
Family
ID=15214204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13811180A Pending JPS5761637A (en) | 1980-10-02 | 1980-10-02 | Method of tube bending for circular fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5761637A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101834103A (en) * | 2010-03-25 | 2010-09-15 | 浙江阳光集团股份有限公司 | Method for processing double-helix energy-saving fluorescent lamp |
| KR101159150B1 (en) | 2008-08-04 | 2012-06-22 | 가부시키가이샤 나리타 세이사쿠쇼 | Method and apparatus for bending tubular fluorescent lamp |
-
1980
- 1980-10-02 JP JP13811180A patent/JPS5761637A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101159150B1 (en) | 2008-08-04 | 2012-06-22 | 가부시키가이샤 나리타 세이사쿠쇼 | Method and apparatus for bending tubular fluorescent lamp |
| CN101834103A (en) * | 2010-03-25 | 2010-09-15 | 浙江阳光集团股份有限公司 | Method for processing double-helix energy-saving fluorescent lamp |
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