Pressure cooker helium charging system
A pressure cooker and pot body technology, applied in the direction of detecting the appearance of fluid at the leakage point, using liquid/vacuum degree for liquid tightness measurement, etc., can solve the problems of inability to achieve helium filling pressure and filling time, and achieve guarantee safety effect
Active Publication Date: 2015-03-18
RF360 TECH (WUXI) CO LTD
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Problems solved by technology
However, due to the lack of an automatic control system when filling helium for batch SMD products, it is still impossible to accurately and effectively control the helium filling pressure and filling time.
Method used
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[0023] See figure 1 , figure 2 , image 3 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 The present invention comprises a pressure cooker 1, at least three lock lugs 2-1 are affixed to the outer edge of the top cover 2 of the pressure cooker 1, and it is best to set six lock lugs 2-1, and the outer wall of the upper part of the pressure cooker 1 is affixed with At least three pullable lock handles 1-1, preferably six lock handles 1-1, the lock handle 1-1 includes a lock ring 1-1a, a pin shaft 1-1b, figure 1 Middle 1-1c is a handle, and a tray frame 3 is placed in the inner cavity of the pressure cooker 1, and a tray for carrying products is inserted in parallel on the tray frame 3 (the tray is not shown in the figure), and it also includes a programmable logic controller 4, which can be programmed Logic controller 4 is arranged in control cabinet 5, and control cabinet 5 is positioned at the bottom of pressure cooker 1, and pressure cooker 1 is embedded ...
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The invention provides a pressure cooker helium charging system, which can exactly, effectively and automatically control helium charging pressure and pressure pressurizing aging. The pressure cooker helium charging system comprises a pressure cooker, wherein locking ears are fixedly connected to a top cover of the pressure cooker; locking handles which can be pulled are fixedly connected to the external wall at the upper part of the pressure cooker; a tray rack is arranged in an inner cavity of the pressure cooker; a tray for bearing products is plugged in the tray rack; the pressure cooker helium charging system is characterized by further comprising a programmable logic controller, wherein the programmable logic controller is arranged in a control cabinet; the pressure cooker is embedded in the control cabinet; the programmable logic controller is respectively connected with a control panel, a charging solenoid valve, a releasing solenoid valve, a pressure sensor, a digital display time relay, a switch power supply and a position sensor; a helium charging orifice and a releasing orifice are formed at the bottom of the pressure cooker body; the helium charging orifice is connected with the charging solenoid valve and a helium charging pipeline respectively; and the releasing orifice is connected with the releasing solenoid valve and a discharging pipeline respectively.
Description
technical field [0001] The invention relates to the equipment in the helium pre-filling process before the micro-leakage test (helium test) of SMD (surface mount device) miniaturized products, specifically a pressure cooker helium filling system. Background technique [0002] Helium inspection for the tightness of SMD miniaturized products requires helium filling in the seam welding process of SMD miniaturized products. Since the helium will be lost in a short time (usually ten minutes), the SMD products before the helium inspection Refilling with helium is necessary, and the control of helium filling is extremely important, and the helium filling pressure and helium filling aging must be guaranteed. At present, the requirements for helium inspection of the tightness of SMD miniaturized products are getting higher and higher, and the original sampling inspection form has been upgraded to the full inspection form. Therefore, the equipment used must be able to fill helium for ...
Claims
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IPC IPC(8): G01M3/20
Inventor 杨文刚
Owner RF360 TECH (WUXI) CO LTD