Coating device capable of realizing high-precision control of surface shape of optical filter

Abstract

The utility model discloses a coating device capable of realizing high-precision control on the surface shape of an optical filter, and relates to the technical field of optical filter coating. Comprising a rotary drum, a connecting shaft is arranged in the middle of the rotary drum, the two sides of the rotary drum are fixed to the connecting shaft through connecting rods, and the connecting shaft is rotationally connected into the coating machine; a plurality of groups of transversely distributed through grooves are formed in the rotary drum; and an annular supporting seat is fixed at the bottom of each through groove. According to the utility model, a film coating umbrella in the prior art is replaced by the rotary drum, and the film coating jigs are transversely arranged on the surface of the rotary drum at equal intervals, so that when the rotary drum drives the optical filter to rotate, film coating crystal grains are uniformly sprayed on the surface of the optical filter through the film coating nozzle arranged right below the rotary drum, and in the film coating spraying process, the film coating effect is improved. According to the invention, the gathering of the coating crystal grains and the non-uniform spraying of the optical filter can be effectively avoided, the high-precision control of the thickness of the coating crystal grains is realized, and the optical performance of the optical filter is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter coating technology field, concretely is a kind of coating device that can realize the high-precision control of filter surface shape. BACKGROUND

[0002] The coating technology of optical communication filter is the key to realize high-performance optical devices, mainly used for selectively transmitting specific wavelength optical signals.

[0003] Chinese utility model patent, authorized announcement number "CN220468113U", discloses a kind of optical communication filter coating device, the optical communication filter coating device is set using four containing grooves, and the length, width of each containing groove is set as 35.3 millimeters, so, the size of optical communication filter is reduced, effectively reduce the wavelength variation from the center to the edge of optical communication filter.

[0004] The above scheme solves the technical problems raised in the background art, but in actual application, the above scheme still has certain problems, for example, in the above device, the coating jig is placed on the surface of the coating umbrella, the coating umbrella is rotatably arranged in the coating machine, and the coating head arranged at the bottom of the coating machine is used to coat the filter, so, since the dome is formed at the top of the coating umbrella, the coating grains will gather towards the dome, and the number (distance) of the coating jigs on the outer side of the coating umbrella is more (greater) than that on the inner side of the coating umbrella, so that the coating device is not easy to control the thickness of the coating grains sprayed on the filter installed on the coating umbrella with high precision, and the unevenness of such thickness control may affect the optical performance of the filter. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of coating device that can realize the high-precision control of filter surface shape to solve the problems raised in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of coating device that can realize the high-precision control of filter surface shape, including rotary drum, the middle part of rotary drum is provided with connecting shaft, rotary drum both sides are fixed with connecting shaft by connecting rod, and connecting shaft is rotatably connected in coating machine;

[0007] A plurality of groups of transverse distribution through slots are formed in the rotary drum, and the bottom of the through slot is fixed with an annular support seat.

[0008] The top of the annular support seat is provided with a coating jig for carrying the filter, and the inner side of the coating jig is provided with a positioning member for fixing the filter.

[0009] Preferably, the coating jig includes a housing and an annular extension plate arranged at the bottom of the housing, and the filter is mounted at the top end of the annular extension plate.

[0010] Preferably, the shell is threadedly connected with the through groove.

[0011] Preferably, the outer side of the shell is fixed with a rubber anti-skid ring facilitating rotation of the shell.

[0012] Preferably, the positioning member comprises a plurality of arc-shaped grooves opened in the inner side of the shell and vertical grooves communicated with the arc-shaped grooves.

[0013] An activity rod is movably arranged in the arc-shaped groove, and the end of the activity rod located in the vertical groove is fixed with a connecting block, and the side surface of the connecting block is provided with a second slope surface.

[0014] The other end of the activity rod is fixed with a pressing head, and the side surface of the pressing head is provided with a first slope surface.

[0015] The top end of the annular support seat is fixed with an extrusion plate, the extrusion plate is matched with the vertical groove, and the extrusion plate is provided with a third slope surface on the side relative to the connecting block.

[0016] Preferably, the pressing head is a rubber head.

[0017] Compared with the prior art, the utility model has the beneficial effects that:

[0018] The coating device can realize high-precision control of the surface shape of the filter, the coating umbrella in the prior art is replaced by a rotating drum, and the coating jigs are equidistantly and transversely installed on the surface of the rotating drum, so that when the rotating drum drives the filter to rotate, the coating grains are uniformly sprayed on the surface of the filter by the coating spray head installed directly below the rotating drum, thereby effectively avoiding the aggregation of the coating grains and the uneven spraying on the filter during the coating spraying process, realizing high-precision control of the thickness of the coating grains, and improving the optical performance of the filter. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a left side view of the utility model;

[0020] Figure 2 It is a half sectional view of the utility model;

[0021] Figure 3 It is Figure 2 It is an enlarged view of the A part.

[0022] In the drawing: 1, rotating drum; 2, connecting shaft; 3, annular support seat; 4, coating jig; 401, annular extension plate; 5, pressing head; 501, first slope surface; 6, connecting block; 601, second slope surface; 7, extrusion plate; 8, rubber anti-skid ring. DETAILED DESCRIPTION

[0023] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative efforts under the premise that no creative efforts are made belong to the scope of protection of the present application.

[0024] The coating technology of the optical communication filter is the key to realize high-performance optical devices, mainly used for selectively transmitting specific wavelength optical signals, and the prior art is to coat the surface of the filter by a coating device.

[0025] As shown in Figures 1-3 The utility model provides a kind of coating device that can realize high-precision control of filter surface shape, including rotary drum 1, connecting shaft 2 is arranged in the middle part of rotary drum 1, rotary drum 1 both sides are fixed with connecting shaft 2 by connecting rod, connecting shaft 2 is rotatably connected in coating machine, it is driven to realize rotation by motor arranged outside coating machine, coating spray head is arranged directly below rotary drum 1 (not shown in the figure).

[0026] A plurality of groups of transverse distribution through slots are opened in rotary drum 1, the interval distance of adjacent through slot groups is equal, as shown in Figure 3 As shown in the figure, annular support seat 3 is fixed at the bottom of through slot, the top of annular support seat 3 is provided with coating fixture 4 for carrying filter, wherein coating fixture 4 includes shell with placing groove arranged in the middle and annular extension plate 401 arranged at the bottom of shell, the aperture range of placing groove is 35-50mm, preferably the aperture is 40mm, the width of annular extension plate 401 extending into placing groove is 5mm, when installing filter, filter is installed at the top end of annular extension plate 401, to realize the fixation between coating fixture 4 and rotary drum 1, in the present scheme, shell is threadedly connected between through slot, in addition, rubber antiskid ring 8 is fixed outside shell to facilitate rotation of shell.

[0027] In addition, positioning member for fixing filter is arranged at the inner side of coating fixture 4, wherein the positioning member includes a plurality of equidistantly distributed arc-shaped grooves opened at the inner side of shell and vertical groove communicated with arc-shaped groove, movable rod is movably arranged in arc-shaped groove, connecting block 6 is fixed at the end of movable rod in vertical groove, second slope surface 601 inclined downward is opened at the side of connecting block 6, abutting head 5 is fixed at the other end of movable rod, first slope surface 501 inclined upward is opened at the side of abutting head 5 to facilitate placing filter between abutting head 5, extrusion plate 7 is fixed at the top end of annular support seat 3, extrusion plate 7 is matched with vertical groove, and third slope surface is opened at one side of extrusion plate 7 relative to connecting block 6, in addition, third slope surface is matched with second slope surface 601.

[0028] It should also be understood that, in order to prevent the pressing head 5 from causing damage to the filter side when extruding the filter, and to increase the friction between the pressing head 5 and the filter to prevent the filter from shifting when rotating, the pressing head 5 is made of rubber material. In addition, in order to reduce the rotational friction between the extrusion plate 7 and the connecting block 6, and to facilitate the installation of the coating jig 4, the extrusion plate 7 and the connecting block 6 can be made of glass material.

[0029] For the supplement of the present scheme, the filter is placed in the shell of the coating jig 4, the bottom end surface of the filter is attached to the top end surface of the annular extension plate 401, the shell is moved downward, the extrusion plate 7 is inserted into the vertical slot at the bottom of the shell, the shell is fixed with the rotating drum 1 by rotating the shell, the extrusion plate 7 generates extrusion force on the side surface of the connecting block 6 during the downward movement of the shell, the pressing head 5 moves to the inside of the placement slot of the shell, until the pressing head 5 generates extrusion force on the outside of the filter, the fixation of the filter is realized, after the coating of the filter is completed, the shell is rotated in the opposite direction, the coating jig 4 is taken out, then the filter is pushed upward, and the filter is taken out.

[0030] Although the embodiments of the present application have been shown and described, it should be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended embodiments and their equivalents.

Claims

1. A coating apparatus capable of achieving high-precision control of filter surface shape, comprising a rotating drum (1), characterized in that: A connecting shaft (2) is provided in the middle of the rotating drum (1). The two sides of the rotating drum (1) are fixed to the connecting shaft (2) by connecting rods. The connecting shaft (2) is rotatably connected inside the coating machine. Several sets of transversely distributed through slots are provided on the rotating drum (1), and an annular support seat (3) is fixed at the bottom of the through slots. The top of the annular support base (3) is provided with a coating fixture (4) for carrying the filter, and the inner side of the coating fixture (4) is provided with a positioning component for fixing the filter.

2. The coating apparatus according to claim 1, which enables high-precision control of the filter surface shape, is characterized in that: The coating fixture (4) includes a housing and an annular extension plate (401) disposed at the bottom of the housing, with a filter mounted on the top of the annular extension plate (401).

3. The coating apparatus for achieving high-precision control of filter surface shape according to claim 2, characterized in that: The outer shell is threadedly connected to the through groove.

4. The coating apparatus for achieving high-precision control of filter surface shape according to claim 2, characterized in that: The outer side of the outer shell is fixed with a rubber anti-slip ring (8) to facilitate the rotation of the outer shell.

5. The coating apparatus according to claim 1, which enables high-precision control of the filter surface shape, is characterized in that: The positioning element includes several arc-shaped grooves formed on the inner side of the outer shell and vertical grooves connected to the arc-shaped grooves; A movable rod is movably installed in the arc-shaped groove. A connecting block (6) is fixed at the end of the movable rod located in the vertical groove. A second slope (601) is opened on the side of the connecting block (6). The other end of the movable rod is fixed with a pressing head (5), and the side of the pressing head (5) is provided with a first slope (501). The top of the annular support (3) is fixed with an extrusion plate (7), which is adapted to the vertical groove. The extrusion plate (7) has a third slope on the side opposite to the connecting block (6).

6. The coating apparatus according to claim 5, which enables high-precision control of the filter surface shape, is characterized in that: The pressure head (5) is a rubber head.

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