TWI397603B - Device for coating film - Google Patents

Description

Coating fixture

The invention relates to a coating fixture, in particular to a coating fixture with stable rotation.

With the development of optical products, the application range of optical components is becoming wider and wider. Accordingly, the industry uses a variety of methods to fabricate optical components to accommodate the market's need for different specifications of optical components (see "Fabrication of Diffractive Optical Lens for Beam splitting Using LIGA Process", Mechatronics and Automation, Proceedings of the 2006 IEEE International Conference on , pp.1242-1247, 2006.06). Generally, the manufactured optical components are subjected to subsequent processing to obtain good performance suitable for the application.

The coating process is one of the important steps in the subsequent processing. Coating refers to the physical or chemical method of plating a single layer or a multilayer film on the surface of an optical element, and utilizing the interference of incident, reflected and transmitted light on the film interface to achieve focusing, collimation, filtering, reflection and refraction. The coating process of the optical component is: first, the optical component is mounted on the coating fixture, the coating fixture is placed in a container; secondly, the container is sealed, and the container is vacuumed; then, during the rotation of the coating fixture, The method of vapor deposition or sputtering is to coat the portion where the optical component needs to be coated; finally, the vacuum is applied to the container, and the coated optical component is detached from the coating fixture.

In the coating process, the motor is used to drive the rotating shaft to rotate the coating fixture. This driving method makes the rotation process unstable and affects the coating product. quality.

In view of this, it is necessary to provide a coating fixture with a smooth rotation.

A coating fixture comprising an umbrella structure having a plurality of holes, a fixing device and a rotating device fixed to a top end of the mushroom structure, the fixing device being a cylinder composed of a base and a side wall, the base Having a notch and the base is recessed to form a groove in the surface of the cylinder, the rotating device comprises a cylinder having a surface, the surface of the cylinder is convex to form a rotating shaft and a fixing ring surrounding the rotating shaft, the fixing ring card In the groove of the base, the fixing ring is provided with a blocking device to rotate the fixing device together when the rotating device rotates.

Compared with the prior art, the rotating device of the coating fixture of the embodiment of the present invention is in contact with the fixing device through the fixing ring and the groove, and the surface contact between the two has a large contact area. Therefore, the mushroom structure rotates. The rotation is smooth during the process.

The invention will now be described in further detail with reference to the accompanying drawings.

As shown in FIG. 1 and FIG. 2, it is a coating jig 10 according to a first embodiment of the present invention. The coating fixture 10 includes an umbrella structure 12, a fixture 14 and a rotating device 16.

The umbrella structure 12 is provided with a plurality of holes 122 for the objects to be coated thereon.

The fixing device 14 is fixed to the top end of the mushroom structure 12 by welding or the like. The fixture 14 is a hollow cylinder having a base 142 and a side wall 143 body. The base 142 has a notch 1421. The base 142 is recessed on one side of the cylinder 4 to form a recess 1422. The side wall 143 is partially annular and fixed to the mushroom structure 12, and a space for accommodating the rotating device 16 is formed between the side wall 143, the base 142 and the mushroom structure 12.

In this embodiment, the groove 1422 is a circular ring. However, the groove 1422 is not limited to a circular ring shape, and may be other shapes such as a rectangle, a square, or the like.

The rotating device 16 is a cylinder having a surface 162. The surface 162 is vertically convex to form a rotating shaft 1622 and an annular projection 1621 surrounding the rotating shaft 1622. The diameter of the rotating shaft 1622 gradually decreases away from the surface 162, and the maximum diameter is less than or equal to the width of the notch 1421. The width of the annular projection 1621 is less than or equal to the width of the recess 1422 so that the annular projection 1621 can be engaged in the recess 1422. Two stoppers 1623 are disposed on the top surface of the annular protrusion 1621, and the distance between the two stoppers 1623 is less than or equal to the size of the notch 1421.

The shape of the annular projection 1621 needs to cooperate with the groove 1422. In this embodiment, the annular projection 1621 is a circular projection.

When assembled, the rotating device 16 is inserted between the fixing device 14 and the mushroom structure 12, and the rotating shaft 1622 is inserted into the notch 1421 so that the two blocking blocks 1623 are all located within the range of the notch 1421, and the annular protrusion 1621 and the concave portion are formed. The slots 1422 are aligned, and then the rotating device 16 is lifted up so that the annular projections 1621 snap into the recesses 1422.

When the motor or other device drives the rotating device 16 to rotate, the annular projection 1621 slides in the groove 1422 at the moment of rotation so that the fixing device 14 does not rotate together, and when the stopper 1623 is in contact with the fixing device 14, the fixing is fixed. The device 14 rotates with the rotating device 16 under the action of the stopper 1623. Move, thereby driving the umbrella structure 12 to rotate.

The mushroom structure 12 is fixed to the fixing device 14, and since the rotating device 16 is in surface contact with the fixing device 14, it has a large contact area, and therefore, the rotation process of the mushroom structure 12 is stable.

Of course, the two stoppers 1623 can also be disposed on the side of the annular protrusion 1621; the stopper 1623 can also be one, disposed on the side or the top surface of the annular protrusion 1621.

As shown in FIG. 3, it is a coating jig 20 provided by the second embodiment of the present invention. The coating fixture 20 includes an umbrella structure 12, a fixture 14 and a rotating device 18.

The structure of the rotating device 18 is substantially the same as that of the rotating device 16: the rotating device 18 includes a rotating shaft 1822 and an annular projection 1821 surrounding the rotating shaft 1822; the difference is that an arc 1823 is disposed on the side of the annular projection 1821. The length of 1823 is less than or equal to the size of the notch 1421.

Of course, the arc 1823 can also be disposed on the top surface of the annular protrusion 1823.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

Coating fixture ‧‧10,20

Umbrella structure ‧‧12

Fixing device ‧‧14

Rotating device ‧‧16,18

Hole ‧‧122

Base ‧‧‧142

Side wall ‧ ‧ 143

Gap ‧‧‧1421

Groove ‧‧‧1422

Surface ‧‧‧162

Ring bulge ‧‧16221, 1821

Block ‧ ‧ 1623

Rotary shaft ‧ ‧ 1622, 1822

Arc ‧‧1823

1 is a schematic perspective view of a coating jig provided by a first embodiment of the present invention.

2 is an exploded schematic view of a coating jig provided by a second embodiment of the present invention; Figure.

3 is a schematic view of a coating jig provided by a second embodiment of the present invention.

Coating fixture ‧‧10

Umbrella structure ‧‧12

Fixing device ‧‧14

Rotating device ‧‧16

Hole ‧‧122

Base ‧‧‧142

Side wall ‧ ‧ 143

Gap ‧‧‧1421

Groove ‧‧‧1422

Surface ‧‧‧162

Ring raised ‧‧16221

Block ‧ ‧ 1623

Rotary ‧ ‧ 1622

Claims (7)

A coating fixture comprising an umbrella structure having a plurality of holes, the improvement comprising: further comprising a fixing device and a rotating device fixed to the top end of the mushroom structure: the fixing device is a base and a side wall a cylindrical body, the base has a notch and the base is recessed to form a groove in a surface of the cylinder, and the rotating device comprises a cylinder having a surface, the surface of the cylinder is convex to form a rotating shaft and surround the rotating shaft The fixing ring is engaged in the groove of the base, and the fixing ring is provided with a blocking device to rotate the fixing device together when the rotating device rotates. The coating jig of claim 1, wherein the side wall is fixed to the top of the mushroom structure. The coating fixture of claim 2, wherein the blocking device is a bump disposed on a top surface or a side surface of the fixing ring. The coating fixture of claim 2, wherein the blocking device is two bumps disposed on a top surface or a side surface of the fixing ring, and the distance between the bumps is less than or equal to the size of the notch. The coating fixture of claim 2, wherein: the blocking device is an arc disposed on a top surface or a side surface of the fixing ring, and the arc of the arc is less than or equal to a curvature of the arc of the notch. . The coating jig according to any one of claims 1 to 5, wherein the diameter of the rotating shaft gradually decreases in a direction away from the cylindrical body. The coating jig of claim 6, wherein the blocking device is integrally formed with the fixing ring.