Safety valve detection device convenient for placing optical flat

Abstract

The utility model discloses a safety valve detection device convenient for placing an optical flat, which comprises a positioning assembly, a placing assembly, an adjusting mechanism and a lamp panel, and is characterized in that the positioning assembly comprises a spring and a clamping block arranged at the front end of the spring; the placing assembly comprises a mounting plate, an air cylinder arranged on the side wall of the mounting plate, a traction rod movably matched with the telescopic end of the air cylinder, a movable arm movably matched with the traction rod and a clamping plate arranged on the side wall of the movable arm, the movable arm is movably matched with the side wall of the mounting plate through a rotating shaft, and the adjusting mechanism is used for adjusting the height and the horizontal position of the placing assembly. The spring pushes the clamping plate to clamp, position and keep the safety valve workpiece stable, the air cylinder is externally connected with air supply equipment, the traction rod is controlled to pull the movable arm to drive the clamping plate to clamp and place the optical flat, the placing assembly is driven by the servo motor to move the optical flat to the position above the safety valve workpiece, and the electric telescopic rod is used for slowly controlling the optical flat to fall off. And stable lowering of the optical flat is kept, and violent collision is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of valve detection, and particularly relates to a safety valve detection device which is convenient for placing an optical flat Background Technique

[0002] The flatness of a safety valve refers to the plane formed by the seat or the sealing surface of the valve disc, i.e., the overall annular belt, and the flatness confirmed by it. Good flatness means that the sealing surface has no depression, protrusion or floating surface.

[0003] Principle of the flatness detector for safety valves: When the incident light emitted by the light source projects onto the upper surface of the optical flat, according to the refraction law, the light is refracted into light ray α to be parallel to the working surface of the optical flat. At this time, a part of the light ray α' is reflected by this surface, and then refracted and emitted after passing through the upper surface of the optical flat; another part of the light ray α'' passes through the working surface of the parallel optical flat and passes through the air wedge to the measured surface of the workpiece. After being reflected by this surface, this light ray is successively refracted and emitted from the upper surface of the optical flat. Due to the different thicknesses of the air wedges at the positions of the reflected light rays, there is an optical path difference between the two light rays α' and α'', and they interfere with each other. The human eye can see the interference fringes between the working surface of the optical flat and the measured surface of the workpiece (image area).

[0004] Under normal working conditions, when using a white light source, the observed interference fringes are colored; when using a monochromatic light source, the interference fringes are bright and dark. If exactly the wave crest meets the wave crest, the brightness is the strongest, presenting a bright fringe; if the wave crest meets the wave trough, the brightness is the darkest, presenting a dark fringe. The brightest and the darkest form the interference fringes. The height difference between two adjacent fringes is half a wavelength. In this way, by counting the interference fringes, the flatness of the measured surface can be quantitatively evaluated. If a sodium lamp filled with helium is used, the wavelength of this light source is 0.000598 mm. When detecting the plane, the height difference between the fringes is calculated using half the wavelength, that is, the height difference unit corresponding to the generated interference fringes is 0.3 μm. That is, the flatness of the measured part between the centers of two dark fringes of the optical lens (optical flat) is: 0.3 μm higher or lower.

[0005] When detecting the flatness of a workpiece, the flatness of the sealing surface can be quantitatively evaluated according to the interference fringes that appear between the working surface of the optical flat and the measured surface of the workpiece. Before measurement, the measured surface of the workpiece and the working surface of the optical flat must be cleaned, and then gently wiped clean with a lens cloth. Then, hold the edge of the optical flat with both hands and gently lower it vertically so that the entire working surface of the optical flat slowly contacts the measured surface, and then move the hands away from the optical flat to observe the appearance of the interference fringes.

[0006] In the existing method of holding the optical flat by hand, the stability of the hand is poor, and moreover, the hand is prone to contaminating the optical flat, affecting the detection result. Content of the Utility Model

[0007] The purpose of this section is to outline some aspects of the embodiments of the present utility model and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and the title of the description of this application, to avoid obscuring the purpose of this section, the abstract, and the title of the utility model. Such simplifications or omissions shall not be used to limit the scope of the present utility model.

[0008] In view of the above and / or problems existing in the use of the safety valve detection device for facilitating the placement of optical flats, the present utility model is proposed.

[0009] Therefore, the purpose of the present utility model is to provide a safety valve detection device for facilitating the placement of optical flats, which clamps and positions the safety valve workpiece by a spring pushing a clamping plate to maintain stability. By connecting an air supply device to the cylinder, the traction rod is controlled to drive the moving arm to clamp and release the optical flat. The placement component is driven by a servo motor to move the optical flat above the safety valve workpiece, and the electric telescopic rod is used to slowly control the descent of the optical flat to maintain the stability of the descent of the optical flat and avoid violent collisions.

[0010] To solve the above technical problems, according to one aspect of the present utility model, the following technical solutions are provided:

[0011] A safety valve detection device for facilitating the placement of optical flats, comprising:

[0012] A positioning component, the positioning component includes a spring and a clamping block arranged at the front end of the spring, and a safety valve workpiece is clamped between the clamping blocks of the two positioning components;

[0013] A placement component, the placement component includes a mounting plate, a cylinder arranged on the side wall of the mounting plate, a traction rod movably matched with the telescopic end of the cylinder, a moving arm movably matched with the traction rod, and a clamping plate arranged on the side wall of the moving arm. An optical flat is clamped between the clamping plates, and the moving arm is movably matched with the side wall of the mounting plate through a rotating shaft;

[0014] An adjusting mechanism for adjusting the height and horizontal position of the placement component;

[0015] A lamp board arranged at the bottom of the telescopic end of the cylinder.

[0016] As a preferred solution of the safety valve detection device for facilitating the placement of optical flats according to the present utility model, the other end of the spring is provided with a fixing plate, and a base is arranged at the bottom of the fixing plate.

[0017] As a preferred solution of the safety valve detection device for facilitating the placement of optical flats according to the present utility model, a light-shielding cover is arranged on the top of the base, and the light-shielding cover is sprayed with black paint.

[0018] As a preferred embodiment of a safety valve detection device for conveniently placing a flat crystal according to the present utility model, wherein the adjustment mechanism includes a column, a servo motor disposed on the side wall of the column, a cross beam disposed at the output end of the servo motor, and an electric telescopic rod disposed on the side wall of the cross beam.

[0019] As a preferred embodiment of a safety valve detection device for conveniently placing a flat crystal according to the present utility model, wherein the telescopic end of the electric telescopic rod is fixedly connected to the side wall of the cylinder.

[0020] Compared with the prior art, the present utility model has the following beneficial effects: For this safety valve detection device for conveniently placing a flat crystal, the safety valve workpiece is clamped and positioned by the spring pushing the clamping plate to maintain stability. The cylinder is externally connected to a gas supply device to control the traction rod to pull the moving arm to drive the clamping plate to clamp and place the flat crystal. The servo motor drives the placement component to move the flat crystal above the safety valve workpiece, and the electric telescopic rod is used to slowly control the descent of the flat crystal to maintain the stability of the flat crystal during descent and avoid violent collisions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the present utility model will be described in detail below with reference to the drawings and specific embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts. Among them:

[0022] Figure 1 is a schematic diagram of the overall structure of a safety valve detection device for conveniently placing a flat crystal according to the present utility model;

[0023] Figure 2 is a schematic diagram of the cross-sectional part structure of a safety valve detection device for conveniently placing a flat crystal according to the present utility model.

[0024] 100, positioning component; 110, spring; 111, base; 112, light-shielding cover; 120, clamping block; 121, safety valve workpiece; 200, placement component; 210, mounting plate; 220, cylinder; 230, traction rod; 240, moving arm; 250, clamping plate; 251, flat crystal; 300, adjustment mechanism; 310, column; 320, servo motor; 330, cross beam; 340, electric telescopic rod; 400, lamp board. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be made with reference to the drawings.

[0026] Secondly, the present utility model will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present utility model in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0027] To make the objectives, technical solutions, and advantages of the present utility model clearer, the embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] The present utility model provides a safety valve detection device that facilitates the placement of optical flats. The safety valve workpiece is clamped and positioned by a spring pushing a clamping plate, maintaining stability. An air supply device is externally connected to a cylinder to control a traction rod to pull a moving arm to drive the clamping plate to clamp and release the optical flat. A placement component is driven by a servo motor to move the optical flat above the safety valve workpiece, and an electric telescopic rod is used to slowly control the descent of the optical flat to maintain the stability of the descent of the optical flat and avoid violent collisions.

[0029] Figure 1 - Figure 2 Shown is a schematic structural diagram of an embodiment of a safety valve detection device that facilitates the placement of optical flats according to the present utility model. Please refer to Figure 1 - Figure 2 In this embodiment, a safety valve detection device that facilitates the placement of optical flats, its main part includes a positioning component 100, a placement component 200, an adjustment mechanism 300, and a lamp board 400.

[0030] The positioning component 100 clamps and positions the safety valve workpiece 121 by a spring 110 pushing a clamping plate 250 to maintain stability. Specifically, the positioning component 100 includes a spring 110 and a clamping block 120 provided at the front end of the spring 110. The safety valve workpiece 121 is clamped between the clamping blocks 120 of two positioning components 100. In this embodiment, the other end of the spring 110 is provided with a fixing plate, the bottom of the fixing plate is provided with a base 111, and the top of the base 111 is provided with a light-shielding cover 112, and the light-shielding cover 112 is sprayed with black paint;

[0031] The placement component 200 externally connects an air supply device to a cylinder 220 to control a traction rod 230 to pull a moving arm 240 to drive the clamping plate 250 to clamp and release the optical flat 251. Specifically, the placement component 200 includes a mounting plate 210, a cylinder 220 provided on the side wall of the mounting plate 210, a traction rod 230 movably matched with the telescopic end of the cylinder 220, a moving arm 240 movably matched with the traction rod 230, and a clamping plate 250 provided on the side wall of the moving arm 240. The optical flat 251 is clamped between the clamping plates 250, and the moving arm 240 is movably matched with the side wall of the mounting plate 210 through a rotating shaft;

[0032] The adjusting mechanism 300 drives the placement component 200 through the servo motor 320 to move the optical flat 251 above the safety valve workpiece 121, and slowly controls the descent of the optical flat 251 by using the electric telescopic rod 340 to maintain the stability of the descent of the optical flat 251 and avoid violent collisions. Specifically, the adjusting mechanism 300 is used to adjust the height and horizontal position of the placement component 200. In this embodiment, the adjusting component includes a column 310, a servo motor 320 disposed on the side wall of the column 310, a cross beam 330 disposed at the output end of the servo motor 320, and an electric telescopic rod 340 disposed on the side wall of the cross beam 330. The telescopic end of the electric telescopic rod 340 is fixedly connected to the side wall of the cylinder 220;

[0033] The lamp board 400 emits light to irradiate the optical flat 251 and the safety valve workpiece 121. Specifically, the lamp board 400 is disposed at the bottom of the telescopic end of the cylinder 220.

[0034] Combined with Figure 1 - Figure 2 , for a safety valve detection device facilitating the placement of the optical flat in this embodiment, the specific use process is as follows: the safety valve workpiece 121 is clamped and positioned by pushing the clamping plate 250 through the spring 110 to maintain stability. The cylinder 220 is externally connected to a gas supply device to control the traction rod 230 to traction the moving arm 240 to drive the clamping plate 250 to clamp and release the optical flat 251. The servo motor 320 drives the placement component 200 to move the optical flat 251 above the safety valve workpiece 121, and slowly controls the descent of the optical flat 251 by using the electric telescopic rod 340 to maintain the stability of the descent of the optical flat 251 and avoid violent collisions. The lamp board 400 emits light to irradiate the optical flat 251 and the safety valve workpiece 121, and the flatness of the safety valve is detected according to the principle of the safety valve flatness detector.

[0035] Although the present invention has been described above with reference to the embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the disclosed embodiments of the present invention can be combined with each other in any way. The exhaustive description of these combinations is not given in this specification only for the sake of saving space and resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A safety valve detection device convenient for placing a flat crystal, characterized in that: include: A positioning assembly (100), the positioning assembly (100) comprising a spring (110) and a clamping block (120) arranged at the front end of the spring (110), a safety valve workpiece (121) being clamped between the clamping blocks (120) of the two positioning assemblies (100); A placement assembly (200), the placement assembly (200) comprising a mounting plate (210), a cylinder (220) disposed on a side wall of the mounting plate (210), a traction rod (230) movably engaged with a telescopic end of the cylinder (220), a movable arm (240) movably engaged with the traction rod (230), and a clamping plate (250) disposed on a side wall of the movable arm (240), a flat crystal (251) being clamped between the clamping plates (250), and the movable arm (240) and the side wall of the mounting plate (210) being movably engaged via a rotating shaft; An adjustment mechanism (300), the adjustment mechanism (300) being used to adjust the height and horizontal position of the placement component (200); A light board (400) is arranged at the bottom of the telescopic end of the cylinder (220).

2. A safety valve detection device that is convenient for placing a flat crystal according to claim 1, characterized in that: A fixing plate is provided at the other end of the spring (110), and a base (111) is provided at the bottom of the fixing plate.

3. A safety valve detection device convenient for placing a flat crystal according to claim 2, characterized in that: A light shield (112) is provided on the top of the base (111), and the light shield (112) is sprayed with black paint.

4. A safety valve detection device that is convenient for placing a flat crystal according to claim 3, characterized in that: The adjustment mechanism (300) comprises a column (310), a servo motor (320) arranged on a side wall of the column (310), a crossbeam (330) arranged at an output end of the servo motor (320), and an electric telescopic rod (340) arranged on a side wall of the crossbeam (330).

5. A safety valve detection device convenient for placing a flat crystal according to claim 4, characterized in that: The telescopic end of the electric telescopic rod (340) is fixedly connected to the side wall of the cylinder (220).

Images