JPS5854545A - Manufacture of fluorescent lamp - Google Patents

Abstract

PURPOSE:To prevent any wasting of bases by conducting an ageing test of bulbs which undergo the exhaust process, before bases are attached to the bulbs. CONSTITUTION:Bulbs, after undergoing exhaustions performed with an exhauster 11, are immediately subjected to an ageing test conducted with an ageing conveyer 12. Bulbs which are judged to be good articles in the later half of the conveyer 12, where a vacuum test, a starting voltage test, a lamp current test and so forth were conducted, are sent to a basing conveyer 13. Bulbs which are judged to be defective articles in the latter half of the conveyer 12 are discharged through a defective-article discharging conveyer 15. Following that, bases are attached to the good articles, which are sent to the conveyer 13, by means of a basing machine 14.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a manufacturing method that changes the aging test process for fluorescent lamps.

In general, fluorescent lamps require a so-called exhaust process, in which the inside of the pulp is exhausted through an exhaust pipe, a rare starting gas is sealed in the pulp, and the exhaust pipe is sealed. The aging test involves testing the starting voltage, lamp current, vacuum condition, etc. by energizing the electrodes of the completed nine lamps to check their activation. It is known that a lamp is completed through this process. In the past, an aging test was carried out after the cap was attached, and the fL lamp was disposed of as an unnecessary item after the aging test. In most of these defective lamps, the caps are not defective at all, so the conventional method was uneconomical because the caps were disposed of along with the pulp.

The present invention was developed based on these circumstances, and
The purpose of this is to apply an air test to the pulp after the evacuation process, without attaching a nozzle to the pulp.
The present invention is intended to provide an economical method for manufacturing fluorescent lamps in which the cap only needs to be coated on good quality lamps, thereby preventing wasteful use of the cap.

The details of the invention will be explained below with reference to the drawings.

Figure 1 shows the layout of the Company's conventional fluorescent lamp manufacturing equipment, where 1 is an exhaust machine, 2 is an unloading conveyor, 1
is Pacinda (with clasp n>”: 1 nhe 7.41j-
(The lamps am and s indicate the aging device.The exhaust machine 1 exhausts the air and the starting rare gas is filled in.)
The pulp with the exhaust pipe tipped off (not shown) is
After being transferred to a basting conveyor 3 via an unloading conveyor 2 and capped by a basing machine 4, an aging test was performed in an aging device 56.

FIG. 2 shows the layout of a fluorescent lamp manufacturing facility according to the present invention, where 11 is an exhaust machine, 12 is an aging conveyor, IJ is a basting conveyor, and 14 is a basting machine. Further, 1j indicates a defective product exclusion conveyor.

With such a layout as shown in FIG. 2, the pulp that has been subjected to the evacuation process by the evacuation machine 11 is immediately subjected to an aging test by the aging conveyor 12. In the latter half of the aging conveyor 12, a vacuum test, starting voltage test, rung current test, etc. are performed, and the pulp that is determined to be a storm product is sent to the basing conveyor IS, but the pulp that is determined to be a defective product is sent to the defective product elimination comparer. It will be eliminated after 1j.

The Kuarashi pulp sent to the basing conveyor 11 is fitted with a nozzle by the basing machine-t.

Therefore, according to the method of the present invention, since the nozzle is attached only to the pulp that has been determined to be a good quality product by the aging test, the waste of attaching the nozzle to defective products as in the past is eliminated. Economical. Moreover, as can be seen from Figure 2, in terms of manufacturing equipment, it can be realized by simply modifying the conventional unloading conveyor 2 by adding an aging device and increasing the knee song function, making it possible to centralize and consolidate the process. As a result, equipment can be maintained and managed with fewer workers.

Furthermore, by reducing the number of machines by one, the operating rate of the equipment will also be improved.

Furthermore, even if you take the knee song test before Pélange 1,
In terms of the stability of the starting voltage drop, which is a knee song function, there is no 4IK problem as in the conventional aging test shown in FIG. In FIG. 3, the broken line shows the conventional method, and the solid line shows the method of the present invention.The time required for the lamp starting voltage to stabilize is about 30 seconds in both cases, and they are comparable to each other. Note that the vertical axis in FIG. 3 is the lamp starting voltage, which is expressed in units of 100 -, where the stable starting voltage of an aged non-defective lamp is taken as 100-.

In accordance with the present invention as described in detail above, an aging test is conducted before the pulp is attached to the pulp after the evacuation process is finished, so that the aging test does not result in a product being determined to be defective. There is no need to attach a cap, and wasteful use of the cap is prevented, resulting in greater economical effects.

[Brief explanation of drawings]

1st is a layout diagram of manufacturing equipment for a conventional solid-state fluorescent lamp; FIG. 3 is a layout diagram of a manufacturing equipment for a fluorescent rung according to an embodiment of the present invention; and 3rd is a characteristic of solid-state starting voltage stabilization. FIG. 11... Exhaust machine, 11... Aging conveyor,
13...Basing conveyor, 14.Φ.Basing machine.

Claims (1)

[Claims] ・After the evacuation process of evacuating the inside of the pulp, filling the pulp with a rare gas, and sealing the exhaust pipe, an aging test is conducted before attaching a nozzle to the pulp. Method of manufacturing light lamps.