CN102680185A

CN102680185A - Airtightness detector

Info

Publication number: CN102680185A
Application number: CN201210137615XA
Authority: CN
Inventors: 白祥云; 陈玉; 陈青清
Original assignee: SHENZHEN XIANGCHENG ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: SHENZHEN XIANGCHENG ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2012-05-07
Filing date: 2012-05-07
Publication date: 2012-09-19

Abstract

The invention discloses an airtightness detector which comprises a product support for placing a product to be detected as well as a drive cylinder and an air inflation detection part which are arranged above the product support, wherein an air inflation control box is arranged below the product support. The airtightness detector is characterized in that the air inflation detection part is driven by the cylinder to move above the product support, the air inflation detection part is pressed to the product to form an airtight space, and a pressure controller for monitoring the pressure of the inside of the product is arranged on the product support. The airtightness detector is suitable for a sealing performance test of a satellite tuner product, has a small and exquisite structure and brings convenience for the matching of the angle of the product because the air inflation detection part moves flexibly to adapt to angle regulation; in addition, the airtightness detector integrates a testing device and an analyzing and processing system, and thus the working efficiency of the airtightness detector is greatly increased, and the convenience is brought for continuous testing.

Description

Airtight detector

[technical field]

The present invention relates to the satellite tuner and make the field, relate in particular to the equipment that the sealing property to the satellite tuner detects.

[background technology]

Along with the development of global satellite industry and opening gradually of China's direct broadcasting satellite policy, China's direct broadcasting satellite market demand will sharply rise.Satellite tuner manufacturing enterprise is faced with opportunity and the pressure that increases investment, expanded reproduction.Particularly in the overall situation of Pearl River Delta area industrial upgrading, energy-saving and emission-reduction, satellite tuner manufacturing enterprise must save manpower with new technology, new equipment in country, and less power consumption promotes efficient.

The industrial development demand of making rapid progress is just impelling the pressure control technology constantly to develop to the High Accuracy Control direction, and along with optimization and the popularization of PLC, related control device reduces volume thereupon significantly simultaneously, and these change has brought good opportunity for our optimization production.In this industry of satellite tuner, the still very original water leak detection method that the products air tightness test is taked, and need carry out the industry that sealing detects at other, all generally adopted impermeability to detect.The impermeability detection mode is accurate, and is minimum to the harmful effect of product, but very high to the requirement of checkout equipment.

The air tightness detection equipment that uses on the market now is to the large sealing product mostly; Impermeability like cylinder detects; This type of occupation area of equipment is big, be difficult for moving; Production site is had relatively high expectations, be not suitable for the request for utilization of satellite tuner industry, industry requirement is that a apparatus adaptability is strong, simple to operate, detection is accurate, the air tightness detection equipment of advantages of small volume at present.

[summary of the invention]

The present invention is directed to above problem and proposed a kind of satellite tuner air tightness detection equipment that is applicable to, have advantage simple to operate, advantages of small volume.

Technical scheme of the present invention is: a kind of airtight detector; Comprise the product shelves of placing product to be detected, the driving cylinder and the inflation test section of product shelves top; Below product shelves, have the ventilating control case, it is characterized in that, said inflation test section is moved above product shelves by air cylinder driven; Said inflation test section is depressed on the product and can constitutes airtight space, on product shelves, has pressure controller.

Top, said inflation test section is movable rotation-shaft, and said inflation test section links together through movable rotation-shaft and driving cylinder; In the middle of the inflation test section is the inflation pressing plate that inside has air-filled pore, has a circle at the periphery of inflating pressing plate and prevents the soft rubber that gas leaks.

In said ventilating control case, include dryer, filtrator, high precision solenoid valve and flow speed controller, successively along connecing the pipeline that be connected to constitute the conducting gas communication, and flow speed controller is divided into two branch roads and is connected to pressure controller and inflation pressing plate.

The Programmable Logic Controller that in the ventilating control case, also has the ability receiving feedback signals; Said pressure controller be signal input part, Programmable Logic Controller as signal Processing maincenter, high precision solenoid valve as the signal processing results responder, the three constitutes a complete signal processing flow system.

The invention has the beneficial effects as follows: be applicable to the sealing property test of satellite tuner product, structure is small and exquisite flexibly, and said inflation test section activity can adapt to angular setting flexibly, is convenient to cooperate the product angle; This airtight detector has been integrated testing apparatus with analysis process system and one in addition, significantly improves the instrument work efficiency and is convenient to follow-on test.

[description of drawings]

Fig. 1 is the airtight detector structural representation of the present invention;

Fig. 2 is an inner structure block diagram in the ventilating control case of the present invention;

Fig. 3 is a principle of work FB(flow block) of the present invention.

1, drives cylinder; 2, product shelves; 3, inflation test section; 4, ventilating control case; 5, pressure controller; 6, inflation pressing plate; 7, soft rubber; 8, dryer; 9, filtrator; 10, high precision solenoid valve; 11, flow speed controller.

[embodiment]

In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.

Embodiment 1: a kind of airtight detector; Comprise the product shelves 2 of placing product to be detected, the driving cylinder 1 and the inflation test section 3 of product shelves 2 tops; Below product shelves 2, have ventilating control case 4, it is characterized in that, said inflation test section 3 is moved above product shelves 2 by air cylinder driven; Said inflation test section 3 is depressed on the product and can constitutes airtight space, on product shelves 2, has pressure controller 5.

3 tops, said inflation test section are movable rotation-shafts, and said inflation test section 3 links together through movable rotation-shaft and driving cylinder 1; Movable rotation-shaft has the degree of freedom of any direction; Guaranteed that inflation test section 3 is free to rotate; In the middle of inflation test section 3 is the inflation pressing plate 6 that inside has air-filled pore; Periphery at the inflation pressing plate has the soft rubber 7 that a circle prevents the gas leakage, rotates the inflation test section, lets the suitable angle of inflation pressing plate 6 adjustment ride on the product.

In said ventilating control case 4, include dryer 8, filtrator 9, high precision solenoid valve 10 and flow speed controller 11; Successively along connecing the pipeline that be connected to constitute the conducting gas communication, and flow speed controller 11 is divided into two branch roads and is connected to pressure controller 5 and inflation pressing plate 6.Aeration gas flow is at first through the filtrator of flowing through again after the dryer drying; Be to come the feeding of pilot-gas perhaps to close afterwards through the high precision solenoid valve; Flow speed controller is communicated to terminal control device---the inflation pressing plate; The pressure information that the pressure controller 5 at final product place is gathered on the product transmits signal to Programmable Logic Controller as feedback, realizes accomplishing whole regulation and control loop.

The Programmable Logic Controller that in ventilating control case 4, also has the ability receiving feedback signals; Said pressure controller be signal input part, Programmable Logic Controller as signal Processing maincenter, high precision solenoid valve as the signal processing results responder, the three constitutes a complete signal processing flow system.

Can illustrate behind the starting outfit, product to be tested to be put into the instrumentation process on the product shelves according to FB(flow block); Inductive switch induction back work is transferred to Programmable Logic Controller with signal, the work of Controlled by Programmable Controller associated solenoid valve; Drive the work of terminal control device; After the inflation pressing plate of terminal control device closely cooperated with product and forms airtight space, pressure controller was surveyed the product air pressure inside and is also fed back signal to Programmable Logic Controller, and Programmable Logic Controller is controlled the high precision solenoid valve through signal analysis and supplied gas to product; Pressure controller is constantly collected pressure signal in the product gas replenishment process; And feed back to Programmable Logic Controller in good time, at the appointed time, the product internal pressure is up to specification; Then Controlled by Programmable Controller is externally exported signal system output OK signal, and the pressure Controlled by Programmable Controller that falls short of specifications is then externally exported signal system output NG signal; When control was externally exported signal system, Programmable Logic Controller can be controlled air-flow output and terminal control device by corresponding instruction simultaneously.

Be fully to save the test duration, if run into the product of gross leak amount, pressure controller can feed back to distinctive signal of Programmable Logic Controller, and Programmable Logic Controller is after receiving signal, and control electromagnetic valve and externally output signal system are at once reported to the police and withdrawed from test.

This instrument is in concrete practicality; Can integrate two airtight pick-up units in a workbench; Even shared detection platform of ability and data processing maincenter part, the effect of realization is few to the utilization of resource, production capacity but greatly promotes; The volume that under same structure, takes up space is little, and efficiency obviously promotes.

Claims

1. airtight detector; Comprise the product shelves of placing product to be detected, the driving cylinder and the inflation test section of product shelves top; Below product shelves, have the ventilating control case, it is characterized in that, said inflation test section is moved above product shelves by air cylinder driven; Said inflation test section is depressed on the product and can constitutes airtight space, on product shelves, has the pressure controller that can monitor the product air pressure inside.

2. according to the said airtight detector of claim 1, it is characterized in that top, said inflation test section is movable rotation-shaft, said inflation test section links together through movable rotation-shaft and driving cylinder; In the middle of the inflation test section is the inflation pressing plate that inside has air-filled pore, has a circle at the periphery of inflating pressing plate and prevents the soft rubber that gas leaks.

3. according to the said airtight detector of claim 1; It is characterized in that; State and include dryer, filtrator, high precision solenoid valve and flow speed controller in the ventilating control case; Successively along connecing the pipeline that be connected to constitute the conducting gas communication, and flow speed controller is divided into two branch roads and is connected to pressure controller and inflation pressing plate.

4. according to the said airtight detector of claim 3; It is characterized in that; The Programmable Logic Controller that in said ventilating control case, also has the ability receiving feedback signals; Said pressure controller be signal input part, Programmable Logic Controller as signal Processing maincenter, high precision solenoid valve as the signal processing results responder, the three constitutes a complete signal processing flow system.