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Ejecting adhesive dispenser based on dual-function cylinder

A double-acting cylinder and spray point technology, which is used in devices and coatings for coating liquid on the surface, can solve the problems of high price, difficult purchase of spare parts and matching, and achieves low cost, low processing accuracy requirements, and reduced length. The effect of diameter ratio

Inactive Publication Date: 2010-09-29
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The demand for high-precision, high-speed fluid packaging equipment in the Chinese market is increasing year by year, but most of the high-precision, high-speed automatic dispensing equipment currently used in China is imported from abroad, which is expensive and difficult to purchase and provide spare parts

Method used

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  • Ejecting adhesive dispenser based on dual-function cylinder
  • Ejecting adhesive dispenser based on dual-function cylinder
  • Ejecting adhesive dispenser based on dual-function cylinder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment one: if figure 1 As shown, the present invention includes a driving mechanism 1, an injection mechanism 2, a glue supply mechanism 4 and a three-stage heating device. The above-mentioned spraying mechanism, and the lower end of the piston rod in the driving mechanism extends to the injection needle in the spraying mechanism to control dispensing; the glue supplying mechanism is fixedly installed on one side of the driving mechanism, and its lower part communicates with the spraying mechanism through a feeding pipe. Mechanism, the glue supply is controlled by the injection needle; the heating device is from the feeding mechanism to the injection mechanism through the feeding pipe, and a three-stage heating device is provided.

Embodiment 2

[0024] Embodiment two: if figure 2 , 3 As shown, the driving mechanism 1 includes an upper valve body 11, a piston 18 and an O-ring 13 that divide the inner cavity of the upper valve body into two upper and lower cavities, and the upper cavity and the lower cavity respectively pass through the upper air supply pipe and the lower Gas supply pipe. The piston and the piston rod 22 are connected by a piston fixing nut 14, and an O-ring 15 is used between the piston and the piston rod 22. A buffer disc 12 is arranged on the top of the piston rod 22 for bearing spring pressure and impact force, and a spring 19 is arranged on the upper end of the buffer disc. The stroke fine-tuning and pre-pressure adjusting mechanism 3 includes a stroke fine-tuning nut 31 and a differential head 36 , the stroke fine-tuning nut 31 is threadedly connected with the upper valve body 11 and locked with a round nut 32 . An O-shaped sealing ring 35 is used between the bottom of the stroke fine-tuning n...

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Abstract

The present invention provides an ejecting adhesive dispenser based on a dual-function cylinder, which comprises a driving mechanism, an ejecting mechanism, an adhesive supplying mechanism and a heating device. A device for a fine route tuning and a pre-pressure adjustment is arranged on the upper portion of the driving mechanism; the lower end of the driving mechanism is connected with the ejecting mechanism; the adhesive supplying mechanism is arranged on the side wall of the driving mechanism and connected with the ejecting mechanism via a feeding pipeline; and a three-stage heating device is provided around the head of the ejecting mechanism, the feeding pipeline and a feeding container. The driving mechanism comprises a dual-function cylinder and a returning spring; the ejecting mechanism comprises an ejecting needle integrated with the piston rod of the cylinder, a lower valve body and an ejecting head; and the ejecting head comprises an ejecting nozzle base, an ejecting nozzle and a clamping sleeve cup. The invention realizes the dispensing of high-viscosity fluid and has the advantages of micro amount, high speed, high frequency, no contact, high precision, high reliability, low cost and low requirements on processing precision.

Description

technical field [0001] The invention relates to a dispensing device for microelectronic packaging, in particular to a non-contact dispensing technology for high-viscosity fluid. Background technique [0002] In microelectronic packaging and LED packaging, glue dispensing technology is one of the key technologies, and it is widely used in the back-end packaging process of integrated circuit manufacturing and the placement and potting process of LEDs. At present, the glue dispensing technology is mainly divided into two categories: contact type represented by screen printing and needle tube transfer and non-contact type represented by jetting technology. Most of the packaging adhesives used in microelectronic packaging and LED packaging are non-Newtonian fluids, and their complex and changeable characteristics make it difficult to guarantee the performance and quality of glue distribution by contact dispensing. With the transfer of the semiconductor industry to China and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C5/00B05C11/00B05C11/10
Inventor 贾海立彭鹏张建华华子恺
Owner SHANGHAI UNIV
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