CN2876706Y

CN2876706Y - Device for testing planeness data on surface of product

Info

Publication number: CN2876706Y
Application number: CN 200620101786
Authority: CN
Inventors: 姚敏佳
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-17
Filing date: 2006-03-17
Publication date: 2007-03-07
Anticipated expiration: 2016-03-17

Abstract

A device for testing planeness data on surface of product. The elements it adopts comprise an air flow meter (5) wherein a pneumatic buoy (4) is used to indicate air flux, a high-pressure air source device (1) which is connected to the inlet of the air flow meter through an air pipe (3). The device is characterized in that: A. the structure character is that the outlet of the air flow meter (5) is connected to the level-testing plate (6) through the air pipe (3), so the high-pressure air source can spurt out through the nozzle in the level-testing plate (6); B. The testing procedure: provide a convexity to the level-testing plate (6), and the convexity is attached to the part to be tested (7) with the nozzle, move the level-testing plate (6) on the part to be tested (7) back and forth like scanning, the condition of level can be judged by the floating range of the pneumatic buoy (4). It has the advantages of high testing accuracy, high testing speed, and easy operation.

Description

A kind of device of test products outside surface flatness data

Technical field:

The present invention relates in a kind of " flatness " testing process to show and judge whether qualified device by instrumented data.

Background technology:

At present, for passing over its surface smoothness (be actually and be difficult to haggle over its surface smoothness), but surface smoothness with big external surface area product, for example: sprayed paint or the whether qualified judging means of refrigerator shell outside surface flatness that plastic-blasting covers is made of metal-sheet parts, regulation (also being the regulation that relates to its outward appearance quality inspection project in the refrigerator GB) is determined by artificial range estimation inspection usually.In case--dispute takes place in----(example: require the workshop to do over again) for this reason, and it is all reasonable to tend to occur both sides, is absorbed in the situation of persistant (error is bigger in a minute with the range estimation sensation).

Summary of the invention:

The present invention's purpose: be a kind of improvement to existing " range estimation inspection " embodiment of testing flatness project.

In order to realize goal of the invention, intend adopting following technology:

The equipment that it adopts comprises: the gas meter of wherein being indicated gas flow by pneumatic buoy, and the high-pressure air source that is connected with its inlet end by gas pipe line, link to each other with the testing flatness plate by gas pipe line from the outlet side of gas meter, it is characterized in that: allow high-pressure air source through the ejection of the nozzle in the testing flatness plate; The one side that the testing flatness plate is provided with convex surface and nozzle is attached on the detected pieces, and comes the mobile testing flatness plate in flyback retrace formula ground on detected pieces, fluctuates by pneumatic buoy measured piece is carried out whether qualified differentiation; Each convex surface unit all is provided with at least one nozzle, and whole convex surface is divided into several unit in length and breadth by the air drain that communicates with the ambient atmosphere space; The parts at convex surface or the convex surface place plastics that should have drawn from; Fluctuate and judge the big or little of tested plate irregularity degree by pneumatic buoy so that the scope of data presentation is big or little.

The present invention's characteristics compared with the prior art:

The present invention is to show test data and simple method is differentiated the whether qualified of detected pieces flatness, and its accuracy of detection and detection speed are far above the pure range estimation inspection means of the flatness test item being implemented as prior art.

Description of drawings:

Fig. 1 has illustrated that one embodiment of the present of invention, Fig. 2 are the K detail drawings (section signal) of Fig. 1.

1: contain the high-pressure air source device that compressor and gas receiver are formed; 2: pressure maintaining valve; 3: gas pipe line (flexible pipe); 4: pneumatic buoy; 5: gas meter; 6: testing flatness plate (can be made of plastics); 7: the detected metal-sheet parts that sprays paint; 8: gas passage; 9: convex surface; 10: nozzle; 11: the air drain that communicates with the ambient atmosphere space.

Embodiment:

As everyone knows, refrigerator body has heat insulation function, its metal shell and plastics inner bag are that the expanded plastic material between the two supports and coheres the location by them, like this, whether qualified the box outer surface that relates to refrigerator outward appearance test item that the metal-sheet parts 7 that covers by spraying paint constitutes just exist needs to detect its " flatness " problem.

At this moment, as long as connect high-pressure air source 1 to testing flatness plate 6, and the degree that bleed pressure is stabilized in a little more than atmospheric pressure is got final product by pressure maintaining valve 2, with hand testing flatness plate 6 is moved on desired detected pieces 7 with coming the flyback retrace formula again, particularly may easily cause irregular zone in process of production or obvious irregular zone be arranged through inspection to thinking, emphasis carries out back and forth moving up and down of scan-type, at this moment, the pneumatic buoy 4 in the gas meter 5 also can be along with irregular situation fluctuates.When there is uneven whole situation in testing flatness plate 6 approach zones, the gas of ejection from nozzle 10, will inevitably discharge through flowing in the air drain 11 that communicates with the ambient atmosphere space in the irregular slit of formation between convex surface 9 and the detected pieces 11, at this moment, the gas flow that discharges is big more, the degree (by data presentation) of pneumatic buoy 4 come-ups is then big more, has just reflected that the irregularity degree that is detected is also big more; Otherwise then irregularity degree is also more little; When pneumatic buoy 4 sinks to the bottom (almost not having gas flow to pass through), represent that then the flatness of detected pieces 7 is fabulous.------is obvious, and whether qualified can accurately and apace differentiate detected pieces 7 flatness by pneumatic buoy 4 shown quantitative datas, avoided the error of pure range estimation inspection means effectively.

Claims

1. the device of a test products outside surface flatness data, the equipment that its adopts comprises: wherein by the gas meter (5) of pneumatic buoy (4) indication gas flow, and the high-pressure air source equipment (1) that is connected with its inlet end by gas pipe line (3);

It is characterized in that:

A. the outlet side from gas meter (5) links to each other with testing flatness plate (6) by gas pipe line (3), allows high-pressure air source through the ejection of the nozzle (10) in the testing flatness plate (6);

B. the parts at convex surface (9) or convex surface (9) place plastics that should have drawn from.