JPH02416Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a support device used for suspending and supporting a rod-shaped glass material in a free state for chemical treatment.

(Prior art) A bead is formed on the head of a rod-shaped glass material, and a large number of the materials are immersed and suspended in a molten salt such as potassium nitrate in a free state, and ion exchange is performed to form a rod-shaped (cylindrical) lens. In the past, when obtaining
As shown in the figure.

That is, a support plate 51 in the shape of a circular, flat punched metal plate as shown in FIG. 7 is prepared, and the support plate 51 is provided with support holes 52 having a hole diameter of approximately 1.2 mm, for example, and liquid flow holes 53 having a smaller diameter than this. are formed in large numbers over the entire surface,
For example, the support plate 51 is made of a stainless steel plate with a thickness of 0.5 mm and a diameter of 140 mm. Since the holes 52..., 53... are extremely large, they are obtained by etching, and an X-shaped support portion 54... is formed on the support plate 51. Connect the hook 55 with a wire 56, and pass the rod-shaped glass material 58, which has a locking bead 57 on the head, into the support hole 52 on the exposed surface between the supporting parts 54, and attach the bead 57 to the hook 55. The material 58... is suspended and supported in a free state as shown in Fig. 8, and the material 58... has a diameter smaller than the hole diameter, for example, by 1.00 mm.
mm and length 1200 mm, the lens including the support hole 51 is immersed in molten salt, and ion exchange is performed to obtain a cylindrical (rod-shaped) lens.

(Problem to be solved by the invention) By the way, since it is necessary to provide several small holes in the support plate 51, mechanical drilling is time-consuming and impractical; therefore, drilling by chemical etching is advantageous; For convenience, it is preferable that the thickness of the plate be as thin as possible, and if the support plate 51 is immersed in molten salt at 400°C to 500°C, the material 58 other than the support portion 54 of the hook will be removed as shown in Fig. 9. As a result, it becomes difficult for the material 58 to be suspended vertically in a free state, and the material 58 is supported in a bent manner, intersects and comes into contact with an adjacent material, and the liquid flow is disrupted. is unevenly distributed, making it difficult to exchange ions uniformly in each part.
The refractive index distribution of the obtained lens is uneven, which leads to the production of defective products and poor product yield.Secondly, the support plate is thin and flat, so its strength is weak and it bends easily, so the material It is difficult to insert and set the material into the support hole 52, and the material often breaks.The yield rate is also poor when inserting and setting the material into the support plate 51, and it is difficult to insert the material into the support hole 52. However, due to the weight of the materials, they may deform and come into contact with each other.

Therefore, the yield rate is extremely low when manufacturing cylindrical lenses, which affects the cost and is one of the reasons for the high unit price.

The present invention has been made to solve the above technical problems.

(Purpose of the invention) The purpose of the invention is to use a supporting plate of the same thickness as the conventional one, which is advantageous in terms of strength, has less thermal deformation during processing, and can be used in a vertical position in a free state during processing of glass rod materials. It guarantees suspension support, ensures uniform and smooth processing of all materials, improves product yield, and facilitates and accurately performs material insertion, setting, and hanging operations. In this respect as well, it is possible to improve the yield, mass produce cylindrical lenses, etc., reduce costs, and furthermore, it is possible to obtain a support device for glass rod material that allows the repeated use of the support plate. .

(Means for Solving the Problems) In order to solve the above-mentioned technical problems and also achieve the above-mentioned objects, the present invention has been developed to solve the above-mentioned technical problems and to achieve the above-mentioned objects. A bent flange portion is formed integrally with the plate material.

(Example) Next, an example of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a vertical sectional side view of the support plate, FIG. 2 is a plan view, and FIG. 3 is an enlarged view of the main part of FIG. 2.

1 is the support plate, which is made of stainless steel plate.
The thickness is 0.5mm and it is in the shape of a perfect circular disk. A hanging flange portion 103 integral with the peripheral edge 102 of the edge plate-like main body 101 of the support plate 1 is formed by bending over the entire circumference. A large number of support holes 2 are formed in the main body 101 of the support plate by etching, and the diameter of the support holes 2 is, for example, 1.2 mm, and adjacent thereto, liquid flow holes 3 having a smaller diameter are formed. Similarly, a large number of... are formed. These holes 2..., 3... are provided over the entire surface except for the support portions to be described later, and only a portion thereof is shown in the figure.

In the above-mentioned drilling, holes 2 having a predetermined width and a cross shape in plan view cross each other through the center of the main body 101.
..., 3... is provided, and the support portion 104 is formed by masking during the etching process, and a square hook insertion hole 4 is provided in the center where the support portion 104 intersects. to be drilled.

Referring to the suspension support of the glass rod material 5 by the support plate 1 described above, the material 5 has a diameter of 1.00 mm and a length, for example.
A locking ball 501 having a diameter sufficiently larger than the diameter of the support hole 3 is provided on the head. The main body 502 below the ball portion 501 of the material 5 is inserted from above into the support hole 3, and the ball portion 501 is caught on the periphery of the upper surface of the hole 3, so that the material 5 is suspended vertically in a free state. It will be supported lower.

By the way, the cross-shaped support part 601 of the hook 6 faces the lower surface of the support plate 1, and the support part 601 is attached to the support plate 1.
Blind support portion 104 without holes 2..., 3...
Have it appear below. The four supporting parts 601 are arranged so that their tip parts 602 face the inner diameter part of the flange part 103, and the square rod-shaped stem 603 that stands up in the center is passed through the insertion hole 4, and the material 5 is hung with the hook 6. The support part 601 of the hook 6 supports the support plate 1 which is supported below, and since the stem 603 is a square rod and the hole 4 is a square hole, it is regulated and held at a position directly below the support part 104 of the main body 101.

Support plate 1 that suspends and supports material 5... in a free state
Support legs 604 are provided on all sides at the middle part of the stem 603 of the hook 6 which suspends and supports, and the tip of this leg is pulled to a support notch 801 provided at the upper end of the cylinder 8 vertically installed in the tank 7, which will be described later. Then, the lower half of the stem 603 of the hook 6 or the support plate 1 is exposed to the inside of the cylinder 8.

By the way, FIG. 6 is a schematic illustration of the processing tank 7.
A molten salt such as potassium nitrate at a temperature of 400°C to 500°C is stored in the tank 7, and a rectifying path 9 is provided near the outer periphery of the tank 7, and cylinders 8 are vertically arranged radially inside the tank 7.
The above-mentioned support plate 1 is suspended and supported in the cylinder 8 by hooks 6, and the materials 5 are suspended and supported in a free state. A stirrer 10 is provided in the center, and the molten salt flows from the top to the bottom of the cylinder 8 over the upper end of the wall 9, flows from the bottom of the wall 9 to the outside and rises, and this process is repeated to stir the material. 5. Flows evenly around the... to perform ion exchange.

(Effects of the invention) As is clear from the above, according to the invention, firstly, the support plate 1 has high rigidity and strength because it has the flange portion 103 around it, is difficult to bend, and can be used in a state where the material 5 is suspended. As the material is less likely to bend or deform, it is easier and smoother to insert and set the material, improving work efficiency, and the material suspended and supported in a free state is held vertically and does not touch the adjacent material. As a result, the occurrence of breakage and the like is reduced, and the yield rate at the stage of hanging the material can be improved.

Next, in the treatment in molten salt, the flange portion 10
Due to the action of 3, it is difficult to deform even at high temperatures, and therefore it is possible to support all the materials vertically, reducing uneven distribution of liquid flow and local concentration of liquid flow, and ensuring uniform liquid flow throughout the material. It is possible to perform ion exchange while facing the lens, and to simultaneously obtain a large quantity of high-quality cylindrical lenses with a homogeneous refractive index distribution and no uneven distribution at a good yield.

Therefore, in addition to the above, mass production of cylindrical lenses and cost reduction are of great importance.

Furthermore, the above effects can be achieved with a simple structure in which the periphery of the support plate 1 is bent to form the flange portion 103.

In the embodiment, the ion exchange treatment of a cylindrical lens has been described, but the present invention can also be implemented in etching treatment and other chemical treatments of glass rods.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Figure 1 is a longitudinal cross-sectional side view of the support plate, Figure 2 is a plan view of the same, and Figure 3 is a side view of the support plate.
The figure is an enlarged view of the main part of Figure 2, Figure 4 is an explanatory diagram of material support, Figure 5 is an explanatory diagram of cylinder support, Figure 6 is an explanatory diagram of the processing device, and Figure 7 is an explanatory diagram of the conventional support plate. A plan view, FIG. 8 is an explanatory view of the suspended state, and FIG. 9 is a perspective view showing the problems of the prior art. In addition, in the drawing, 1 is a support device, 103 is a flange part,
2 is a support hole, 3 is a liquid flow hole, 5 is a material, and 501 is a locking ball.

Claims (1)

[Scope of utility model registration request] Equipped with many glass rod material insertion support holes and liquid flow holes,
A glass rod material having a flat plate shape and integrally provided with a bent flange portion on the entire periphery, and having a locking ball portion on the head thereof is inserted into the support hole and suspended and supported in a free state. A support device for a glass rod material that is immersed in a liquid through its members for chemical treatment.