JPS5843427A - Dyeing device for plastic lens - Google Patents

Abstract

PURPOSE:To make simultaneous dyeing of many pieces of plastic lenses possible by controlling a vertically moving shaft with a cam and a lever thereby setting the conditions suited for required dyeing condition. CONSTITUTION:The starting position of a mounting shaft 5 provided with many lens mounting jigs 4 is adjusted according to the liquid level of a dyeing soln. 12. Then, when a cam 10 is turned, a mounting shaft 5 is oscillated vertically by a cam lever 9, a vertically moving shaft 8, etc. The lenses 1 are moved at the vertical amplitude at which the deepest faces thereof come to the centerline of the lenses in such a way that the dipping surfaces shift stepwise below the lenses, whereby half dyeing of the lenses 1, etc. are accomplished. By such constitution, the many plastic lenses are dyed simultaneously with good reproducibility and quality in the dyeing state of the same conditions.

Description

[Detailed description of the invention] The present invention is directed to dyeing plastic lenses.

Conventionally, in dyeing by gradually increasing the same or cn$ly from the top to the bottom of the lens, two lenses were attached to a jig as shown in Figure 1, and the heart cam 2 was rotated and the vibration of the coil spring 3 was used to spread the dye into the liquid. Dyeing was done by dipping the lens, but the immersion position and opening of the lens depend on the vibration of the coil spring, making it difficult to consistently obtain a good color tone change, and the color tone being poorly recyclable and having large variations. The present invention is.

One example of the present invention is illustrated in Fig. 2 with respect to /'h +++ 7-line color (dying that gradually increases the number of colors from the center of the lens downwards).
A plurality of lens mounting jigs are mounted on the mounting shaft 5. Reference numeral 6 denotes a support base on which a plurality of mounting shafts 5 are fixed in parallel. A cylinder 7 moves the lens 1 up and down between the mounting position and a predetermined immersion position. 8 is the vertical movement shaft, 9 is the cam lever, 10a
The cam 11 is shown under the camshaft and is rotated by a drive source having a variable rotational speed. 12 is composed of a staining solution.

In the above structure, the first and second lenses are attached to one end of the lens attachment jig 4, and the end of each lens attachment jig 4 is fixed to the attachment shaft 5. When the start switch is turned on, the cylinder 7 operates and lowers the Lanes 1 to a predetermined position IF. Next, the camshaft 11 rotates, and the LO cam lever 9. Lens lFi via the vertical movement axis 8
The I-F staining of the lens is carried out by moving the immersion surface stepwise below the lens with a vertical amplitude such that the deepest immersion surface becomes the center line of the lens. The cam rotates once, and after dyeing, the cylinder 7 is operated again, and the lens 1 is safely raised and returned to the position, completing the process. The number of five rolls in the table is 0 to 10 ryn
It is variable and is set depending on the staining conditions. Figure 3 shows cam I
OK molded bll-V diagram (11 is the force distribution to gradually reduce the amplitude m and 5 to obtain the upward displacement amount (■) at the lower end of the vertical displacement)
The cycle C is set to an appropriate value depending on the staining conditions.

t'B is based on a camriet degree in which the amplitude m is unchanged and the center of the amplitude is raised to obtain an upward displacement tH, and the period C is set to an appropriate value depending on the staining conditions.

(31 is a cam IJ'L- that gradually decreases the amplitude while increasing the amplitude center to obtain the upward displacement amount R'). It is set to gradually decrease from Kaku to 14 Kaku, and the upward displacement @H is set to 20M at the lens position, and the period C is 15°.
to 104°, gradually decreasing from 21° to 16°, and 104°.
The cam curve increases from 18" to 23° (1・, -, at 264°t from ゜□, and the cam rotation speed is increased by 10
It was possible to obtain a staining of -7, which was much better than the stage setting K.

A cam mechanism is used to create a cam 1 that matches the dyeing condition of the dye.
3) By setting the row koji and the number of revolutions, it is possible to obtain any desired dyeing condition in the machine, and the reproducibility of the dyeing condition under low conditions is strong, making it possible to obtain lens compatibility. incur Also, since a large number of sheets can be dyed at the same time, it has great effects such as improved processing efficiency.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram explaining a conventional dyeing method Fig. 12 is a front view of an embodiment of the present invention Fig. 143 is a lead diagram of a cam of an embodiment 1... Lens
-4-・Lens mounting jig 5・・Mounting shaft 6.
-・Support stand 9・・Camre □ノ<−10・・・A −: 11・・Camshaft・1. ．． 12...Staining solution ゛ゝ'
Applicant Suwa Seikosha Co., Ltd. Agent Benyoji Mogami Muju 1 Miga 2 Figure

Claims (1)

[Claims] In the dyeing device, a cam drive mechanism is installed that gives a short vertical movement □ to the front P plus kick lens and raises the lower end of the vertical deviation in stages. "1"
'2+ -y J) L/ y Xf) @Colored Snow.