Jet-type dispensing device

Abstract

The invention relates to the technical fields of dispensing, packaging, and the like of electronic products, in particular to a jet-type dispensing device. The device comprises a fixing bracket, a motor, a cam, a glue flowing unit, a non-contact nozzle unit, a flexible arm and a push rod, wherein the motor is mounted on the fixing bracket, and the cam is arranged on one side of the motor and is connected to the motor; the glue flowing unit and the non-contact nozzle unit are mounted on the fixing bracket, and the non-contact nozzle unit is located below the glue flowing unit; one end of the flexible arm is mounted on the fixing bracket, and the other end of the flexible arm extends outward horizontally and forms an L-shaped structure, which is located above the glue flowing unit; the horizontal edge of the L-shaped structure is kept in contact with the cam, and the vertical edge of the L-shaped structure is used for installing the push rod; and the push rod is inserted and fixed on thevertical edge of the L-shaped structure. The jet-type dispensing device has the advantages of simple structure, high jet accuracy, high efficiency and long service life, and is suitable for glues with high viscosity.

Description

technical field [0001] The invention relates to the technical fields of dispensing and packaging of electronic products, in particular to a jet dispensing device. Background technique [0002] Jet dispensing can be divided into deformation extrusion jet dispensing and mechanical collision jet dispensing. Deformation extrusion jet dispensing applies a driving force on the elastic element, and the elastic element deforms, so that the glue liquid obtains kinetic energy , to achieve jet dispensing. Since the kinetic energy obtained by the elastic element is limited, this method is not suitable for dispensing of high-viscosity glue. Mechanical impact dispensing is to move upward to a certain height under the action of driving force through the push rod (or called striker, spray needle), and then move downward at a certain speed, hitting the glue so that the glue obtains kinetic energy and is ejected from the outlet. At present, the driving methods of mechanical collision jet di...

AI Technical Summary

Problems solved by technology

Among them, the piezoelectric drive and the giant magnetostrictive drive are similar, and both use functional materials (the inverse piezoelectric effect of the piezoelectric crystal, the magnetostrictive effect of the magnetostrictive material) to work, and have high displacement resolution and corresponding speed. It has the advantages of fast speed, large driving force and high control precision, but because of its small output displacement, it is often necessary to combine displacement amplification devices (such as flexible amplification mechanisms, levers, etc.) to drive the reciprocating motion of the push rod (or firing pin) in actual use. High difficulty, complex production process, high cost and high price, and high requirements on the performance of the colloid, not suitable for dispensing of high-viscosity glue

[0003] Pneumatic drive relies on air pressure (air intake) to drive the push rod (or striker) to move upward and compress the spring. After exhaust, the push rod is pushed down by the reset of the spring to realize the reciprocating motion of the push rod. This method must be combined with Pneumatic pump (the air pressure is mostly above 0.6MPa) to realize jet dispensing, the cost of matching is high, the consistency of dispensing is poor, and the frequency of dispensing is also low; the electromagnetic drive is through the attraction between the electromagnet and the armature and combined with the spring Reset to drive the push rod (or striker) to reciprocate, the disadvantage is that the volume and energy consumption are large

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