Fixture suitable for film coating of hemisphere-like part

Abstract

The utility model discloses a clamp suitable for film coating of a hemisphere-like part, which comprises a film coating ring assembly, the film coating ring assembly comprises a first film coating ring and a second film coating ring, the diameter of the second film coating ring is matched with the size of a ring opening of the first film coating ring, and the second film coating ring can be connected with the first film coating ring; and fixing structures are arranged at the bottoms of ring openings of the first coating ring and the second coating ring. According to the clamp suitable for film coating of the hemisphere-like part, the internal threads and the external threads of the two film coating rings are connected and are matched with the flanges for fixing, so that the phenomenon that a hemisphere-like lens relatively slides on the film coating rings due to the fact that the part protrudes greatly, the rise of the spherical surface is large and the gravity center of the part is unstable in the film coating rings can be effectively prevented; in addition, a 120-degree field angle is formed between the flange and the side edge, so that the film material can be coated on the hemisphere-like part with the maximum caliber when the film coating ring rotates on the umbrella plate with the radian, and the completion of film coating is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a clamp suitable for coating of hemispherical parts. Background Art

[0002] When processing optical parts, it is often necessary to coat the optical parts to change the propagation characteristics of light in the optical parts. In order to ensure the quality of coating, a special fixture is required to clamp and position the optical parts during coating, to ensure that the optical parts are reliably positioned and will not shift during coating in the coating machine, and that the coating on the surface of the optical parts is uniform and stable. Coating fixtures for hemispherical parts have different structures.

[0003] A common coating fixture for hemispherical parts uses the inner diameter of the coating ring to match the lower rib, and uses the part's own gravity to clamp the part on the rib, so that the lens is in a stable state in the fixture. The coating fixture is placed on the coating plate to complete the coating, but conventional coating fixtures can only complete optical parts with a small spherical sagitta. When performing optical coating on hemispherical parts, due to the large protrusion of the parts, the large spherical sagitta, and the unstable center of gravity of the parts, the coating fixture with a simple inner diameter and rib is difficult to keep the parts in a stable state under the action of the part's own gravity, which causes the part to deviate from the coating during the subsequent coating operation (deviation in the coating position) and the part to fall when the coating plate rotates, causing unnecessary losses.

[0004] Based on the above technical problems, technical personnel in this field urgently need to develop a fixture suitable for the coating of hemispherical parts with a simple structure that can ensure the stability of hemispherical parts during the coating process, prevent the deviation of the coating position, and prevent parts from falling off when the coating plate rotates at high speed. Utility Model Content

[0005] The utility model aims to provide a fixture suitable for coating of hemispherical parts, which has a simple structure, can ensure the stability of hemispherical parts during the coating process, prevent the coating position from deviating, and prevent the parts from falling off when the coating plate rotates at high speed.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model discloses a fixture suitable for coating of hemispherical parts, the fixture comprising:

[0008] A coated ring assembly, comprising a first coated ring and a second coated ring, wherein the diameter of the second coated ring matches the size of the ring opening of the first coated ring and can be connected to the first coated ring;

[0009] The bottom of the ring openings of the first coating ring and the second coating ring are both provided with a fixing structure, and the first coating ring and the second coating ring are connected and cooperate with the fixing structure to fix the part to be coated.

[0010] Furthermore, a first external thread is provided on the outer circumference of the first coated ring, and a first internal thread is provided at the ring opening, and the first coated ring is connected to the second coated ring via the first internal thread.

[0011] Furthermore, the outer circumference of the second coated ring is provided with a second external thread, and the ring opening is provided with a second internal thread, and the second coated ring is connected to the first coated ring via the second external thread.

[0012] Furthermore, the fixing structures are first ribs formed at the bottom of the first coating ring opening; and

[0013] A second rib is formed at the bottom of the second coating ring.

[0014] Preferably, the first rib and its side edge form an angle structure of 120°;

[0015] The second rib and its side edge form an angle structure of 120°.

[0016] In the above technical solution, the utility model provides a fixture suitable for coating of hemispherical parts, which has the following beneficial effects:

[0017] The utility model discloses a fixture suitable for coating of hemispherical parts with simple structure, which uses internal and external threads of two coating rings to connect and cooperate with retaining edges for fixing, and can effectively prevent the hemispherical lens from sliding relatively on the coating ring due to large protrusion of the part, large spherical sagittal height and unstable center of gravity of the part; and can ensure that the hemispherical part is stably fixed on the coating fixture; in addition, the 120° opening angle formed by the retaining edge and the side edge can ensure that when the coating ring rotates on the umbrella plate with an arc, the film material can be coated on the hemispherical part with the maximum diameter, thereby ensuring the completion of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 An overall schematic diagram of a fixture suitable for coating hemispherical parts provided by an embodiment of the utility model;

[0020] Figure 2A schematic diagram of an inclined fixture suitable for coating of hemispherical parts provided by an embodiment of the utility model;

[0021] Figure 3 A schematic diagram of a first coating ring of a fixture suitable for coating hemispherical parts provided by an embodiment of the utility model;

[0022] Figure 4 A partially enlarged view of the first rib of a fixture suitable for coating hemispherical parts provided in an embodiment of the utility model.

[0023] Description of reference numerals:

[0024] 1. Coating ring assembly; 2. First rib; 3. Parts to be coated; 4. Second rib;

[0025] 101, first coated ring; 102, second coated ring; 1011, first external thread; 1012, first internal thread; 1021, second external thread; 1022, second internal thread. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] See also Figure 1 to Figure 4 As shown;

[0028] The utility model discloses a fixture suitable for coating of hemispherical parts, the fixture comprising:

[0029] A coated ring assembly 1, comprising a first coated ring 101 and a second coated ring 102, wherein the diameter of the second coated ring 102 matches the size of the ring opening of the first coated ring 101 and can be connected to the first coated ring 101;

[0030] The bottom of the ring openings of the first coating ring 101 and the second coating ring 102 are both provided with a fixing structure, and the first coating ring 101 and the second coating ring 102 are connected and cooperate with the fixing structure to fix the part 3 to be coated.

[0031] As a further introduction to this embodiment, the first coated ring 101 is provided with a first external thread 1011 on its outer circumference, and a first internal thread 1012 is provided at the ring opening, and the first coated ring 101 is connected to the second coated ring 102 via the first internal thread 1012 .

[0032] As a further introduction to this embodiment, the outer circumference of the second coated ring 102 is provided with a second external thread 1021 , and a second internal thread 1022 is provided at the ring opening. The second coated ring 102 is connected to the first coated ring 101 via the second external thread 1021 .

[0033] As a further introduction to this embodiment, the fixing structures are respectively a first rib 2 formed at the bottom of the ring opening of the first coating ring 101; and

[0034] A second rib 4 is formed at the bottom of the second coating ring 102. The first internal thread 1012 and the second external thread 1021 on the first coating ring 101 and the second coating ring 102 cooperate with each other, and the rib fixing structure can fix the lens between the first coating ring 101 and the first rib 2, which can prevent the hemispherical lens from sliding relative to the first coating ring 101 due to the large protrusion of the part, the large spherical sagittal height, and the unstable center of gravity of the part.

[0035] As a preferred technical solution of this embodiment, the first rib 2 and its side edge form a 120° angle structure, which can ensure that when the first coating ring 101 rotates on the curved umbrella plate, the film material can be coated on the hemispherical part with the maximum diameter, thereby ensuring the completion of the coating;

[0036] The second rib 4 and its side edge form an angle structure of 120°.

[0037] In the above technical solution, the utility model provides a fixture suitable for coating of hemispherical parts, which has the following beneficial effects:

[0038] The utility model discloses a fixture suitable for coating of hemispherical parts with simple structure, which uses internal and external threads of two coating rings to connect and cooperate with retaining edges for fixing, and can effectively prevent the hemispherical lens from sliding relatively on the coating ring due to large protrusion of the part, large spherical sagittal height and unstable center of gravity of the part; and can ensure that the hemispherical part is stably fixed on the coating fixture; in addition, the 120° opening angle formed by the retaining edge and the side edge can ensure that when the coating ring rotates on the umbrella plate with an arc, the film material can be coated on the hemispherical part with the maximum diameter, thereby ensuring the completion of the coating.

[0039] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fixture suitable for coating hemispherical parts, characterized in that: The fixture includes: A coated ring assembly (1), comprising a first coated ring (101) and a second coated ring (102), wherein the diameter of the second coated ring (102) matches the size of the ring opening of the first coated ring (101) and can be connected to the first coated ring (101); The bottom of the ring openings of the first coating ring (101) and the second coating ring (102) are both provided with a fixing structure, and the first coating ring (101) and the second coating ring (102) are connected and cooperate with the fixing structure to fix the part (3) to be coated.

2. A fixture suitable for coating of hemispherical parts according to claim 1, characterized in that: The first coated ring (101) is provided with a first external thread (1011) on its outer circumference, and a first internal thread (1012) is provided at the ring opening; the first coated ring (101) is connected to the second coated ring (102) via the first internal thread (1012).

3. A fixture suitable for coating hemispherical parts according to claim 1, characterized in that: The outer circumference of the second coated ring (102) is provided with a second external thread (1021), and a second internal thread (1022) is provided at the ring opening; the second coated ring (102) is connected to the first coated ring (101) via the second external thread (1021).

4. The fixture suitable for coating of hemispherical parts according to claim 1, characterized in that: The fixing structures are respectively first ribs (2) formed at the bottom of the ring opening of the first coating ring (101); and A second rib (4) is formed at the bottom of the ring opening of the second coated ring (102).

5. A fixture suitable for coating of hemispherical parts according to claim 4, characterized in that: The first rib (2) and its side edge form an angle structure of 120°; The second rib (4) and its side edge form an angle structure of 120°.

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