Piezoelectric series plunger jet dispensing device
A tandem, jet-point technology, applied to devices and coatings that apply liquid to surfaces, can solve problems such as changes in liquid properties, nozzle wear, and increased maintenance costs for non-contact jet-dispensing devices, achieving extended use. life, reduce maintenance costs, and improve work efficiency
Active Publication Date: 2016-02-17
CHANGZHOU GAO KAI PRECISION MACHINERY CO LTD
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Problems solved by technology
[0003] At present, the non-contact jet dispensing device uses the direct impact method to eject the glue, that is, the firing pin directly hits the nozzle under the drive of external force and ejects the glue between the firing pin and the nozzle, and the direct contact between the firing pin and the nozzle The impact will cause serious wear of the nozzle, which greatly increases the maintenance cost of the non-contact jet dispensing device, and for glue with particles, such as solder paste, silver glue, etc., when the high-speed moving needle touches the valve seat, it will be caught The particles in between will be crushed, resulting in changes in the properties of the liquid, which limit the widespread use of non-contact jet dispensing devices
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[0020] Such as figure 1 As shown, the present invention discloses a piezoelectric tandem plunger jet dispensing device, including a glue supply system 100 and an injection system 200, and the piezoelectric tandem plunger jet dispensing device also includes a driver 300 for sending a driving signal , the glue supply system 100 includes a first spring 11, a first cavity 12, a first preload nut 13, a first piezoelectric stack 14 and a first plunger 15, and the first preload nut 13 is installed in the first cavity 12, the first piezoelectric stack 14 is located in the first cavity 12, the first piezoelectric stack 14 is located between the first preload nut 13 and the first plunger 15, and the first spring 11 is arranged in the first The lower end surface of the plunger 15; the injection system 200 includes a second spring 21, a second cavity 22, a second preload nut 23, a second piezoelectric stack 24, a second plunger 25, a glue seat 26 and a nozzle 27 , the second preload nut ...
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The invention relates to dispensing devices, particularly to a piezoelectric series plunger jet dispensing device which comprises a glue supply system and a jet system, and further comprises a driver used for sending a driving signal, wherein the glue supply system comprises a first spring, a first cavity, a first pre-tightening nut, a first piezoelectric stack and a first plunger; and the jet system comprises a second spring, a second cavity, a second pre-tightening nut, a second piezoelectric stack, a second plunger, a glue liquor seat and a nozzle. According to the piezoelectric series plunger jet dispensing device, the second plunger only has impact force to the glue liquor and does not impact on the nozzle to cause the particle glue liquor clamped between the second plunger and the nozzle to burst due to press, and the situation that the nozzle is severely damaged due to impact is avoided, so that the service life of the piezoelectric series plunger jet dispensing device is greatly prolonged, the maintenance cost is reduced, the digitized adjustment of the piezoelectric series plunger jet dispensing device is achieved, and the working efficiency is greatly improved.
Description
technical field [0001] The invention relates to a dispensing device, in particular to a piezoelectric serial plunger jet dispensing device. Background technique [0002] Dispensing device is a process equipment widely used in the field of product production, from semiconductor packaging industry, integrated circuit industry, SMT / PCB assembly industry to general industrial welding, injection coating and sealing, through this device to realize the dispensing of glue , line, surface sizing process. In the microelectronic packaging industry, in order to adapt to the irregularities of workpieces and pursue high-quality, high-speed, and high-precision fluid dispensing devices, dispensing technology has gradually developed towards non-contact jet dispensing. [0003] At present, the non-contact jet dispensing device uses the direct impact method to eject the glue, that is, the firing pin directly hits the nozzle under the drive of external force and ejects the glue between the fir...
Claims
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IPC IPC(8): B05C5/02B05C11/10
Inventor 顾守东刘建芳王吉举王全伟孙立权吴亚东王迪江海焦晓阳路崧
Owner CHANGZHOU GAO KAI PRECISION MACHINERY CO LTD
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