Out-of-cavity flow channel rapid dismounting type piezoelectric injection device and injection method

Abstract

The invention discloses an out-of-cavity flow channel rapid dismounting type piezoelectric injection device and an injection method. The device comprises a cavity, a fixed seat, a fluid seat, a piezoelectric driving mechanism, an impact mechanism, an injection mechanism and a displacement sensor. The cavity is detachably fixed on the fixed seat, the fluid seat is detachably connected with the fixed seat, a flow channel is arranged in the fluid seat. The flow channel is connected with the injection mechanism through a pipeline, the piezoelectric driving mechanism comprises a piezoelectric driver and a lever, the piezoelectric driver is arranged in the cavity and perpendicularly arranged at one end of the lever, the other end of the lever extends out of the cavity from the interior of the cavity and is detachably connected with the impact mechanism, and the displacement sensor is arranged in the cavity and located above the lever. The impact mechanism extends into the fluid seat from theoutside of the fluid seat, the impact direction of the impact mechanism is the direction of the injection mechanism, and the impact mechanism can move up and down along the pipeline. According to thedevice, the flow channel can be quickly dismounted and replaced, glue is prevented from overflowing into the cavity, and the impact mechanism does not need to be corrected after dismounting and maintenance.

Description

technical field [0001] The invention relates to an injection device, in particular to a quick-disassembly piezoelectric injection device and an injection method for a flow channel outside a cavity, and belongs to the technical field of dispensing. Background technique [0002] Piezoelectric-driven jet dispensing valves are widely used in electronics manufacturing. Piezoelectric jet valves spray glue onto the surface of workpieces to achieve bonding and protection of electronic components. Due to the characteristics of the glue, the piezoelectric injection valve needs to be disassembled, cleaned and maintained regularly, the sealing components should be replaced, and the pipeline inside the injection valve should be kept clean so that it can continue to work. At present, in the industry, German Vermes Company, Marco Company, American Nordson Company, domestic Changzhou Gaokai, Changzhou Mingsai Company, Shenzhen Axis Automatic Control, Shenzhen Ruide and other companies all u...

AI Technical Summary

Problems solved by technology

At present, in the industry, German Vermes Company, Marco Company, American Nordson Company, domestic Changzhou Gaokai, Changzhou Mingsai Company, Shenzhen Axis Automatic Control, Shenzhen Ruide and other companies all use lever amplification, and the lever is located inside the injection valve. The lever acts on the firing pin to drive the firing pin to move. When the sealing assembly of the firing pin leaks, the glue will directly enter the cavity of the valve body, bonding the blockage in the cavity, and affecting the performance of the injection valve.

Images