Filling apparatus for liquid bottle filler

Abstract

The invention discloses a filling device of liquid bottler, which comprises the following parts: servo motor, declaration motor, fixing board, screw rod, nut and two bottle cylinders, wherein two bottle cylinders and declaration machine are set on the fixed board on two sides of declaration symmetrically, which is assembled on the rack, the bottom of piston rod of bottle cylinder is fixed on the elevation board, the servo motor connects declaration machine, the upper end of screw rod connects output shaft of declaration machine, the lower end of screw rod is set in the bearing seat through bearing, the bearing seat is fixed on the rack with nut on the elevation board to connect screw rod rotatably.

Description

Technical field: [0001] The invention relates to a liquid filling machine, in particular to a filling device for a piston type liquid filling machine. Background technique: [0002] In the existing piston-type liquid filling machine, regardless of the single-head filling machine or the multi-head filling machine, the liquid filling device is driven by air pressure, that is, the cylinder drives the filling cylinder to twitch back and forth to realize the filling of liquid materials. Its structural principle is shown in Figure 1 and Figure 2. Its working principle is: cylinder piston 12 in cylinder 1 reciprocates back and forth in cylinder body 11 under the action of air pressure, cylinder piston rod 13 is connected with piston 22 in filling cylinder 2, and piston 22 reciprocates with cylinder piston rod 13 movement, the right end of the filling cylinder 2 is connected with a material inlet and outlet three-way valve 3, and a material suction check valve 31 and a material dis...

AI Technical Summary

Problems solved by technology

[0003] ① The filling speed is single. When the filling volume is close to the full bottle, the liquid to be filled will easily produce foam and overflow from the bottle mouth. To overcome this shortcoming, the filling speed can only be reduced, which makes the filling efficiency low and the production capacity of the whole machine cannot be fully utilized.

[0004] ②The filling accuracy is not high. Since the pneumatic filling machine uses pressure gas as the power source, and the gas has compressible characteristics, when the air pressure fluctuates greatly, the cylinder piston detects the piston signal from the magnetic switch during the forward process. When the solenoid valve changes direction, the entire return stroke of the piston will change, resulting in a change in the filling dose, which will affect the stability of the filling dose.

[0005] ③ When adjusting the filling dosage (such as changing the filling specification), it is necessary to manually change the distance between the two magnetic switches 14 and 15, and each time the filling specification adjustment must be done through multiple trial irrigations to meet the requirements, not only troublesome debugging, but also There is a lot of waste of filling materials, and for multi-head filling machines, the adjustment time is longer and more troublesome

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