Process mechanism of ampoule wire drawing and sealing machine

1.
Cam-lever mechanism It consists of cam 1, sector plate 2, ejector rod 3, ejector rod seat 5 and needle cylinder 7 and other components
.

The working process is as follows
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The continuous rotation of the cam 1 is converted into the up and down reciprocating movement of the ejector rod 3 through the fan-shaped plate 2, and then converted into the up and down swing of the pressing rod 6, and finally converted into the up and down reciprocating movement of the cylinder core 20 in the needle cylinder 7
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After completing the reciprocating movement of the cylinder core in the syringe 7 up and down, the medicinal liquid is sucked into the syringe 7 from the liquid storage tank 17 and transported to the needle 10 for filling
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The syringe 7 here is similar to a general volumetric medical syringe
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The difference is that a one-way glass valve 8 and 9 are installed on its upper and lower ends
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When the cylinder core 20 moves upward in the syringe 7, a vacuum is generated in the lower part of the cylinder, the lower one-way valve 8 is opened, and the medicinal liquid is sucked into the lower part of the syringe 7 from the liquid storage tank 17; when the cylinder core moves downward, The lower one-way valve 8 is closed, and the liquid medicine in the lower part of the syringe enters the upper part of the syringe through the small hole at the bottom
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The cartridge core continues to move upward, the upper one-way valve 9 is automatically opened under pressure, and the medicinal liquid is injected into the ampoule 13 through the catheter and the needle 10 extending into the ampoule
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At the same time, the lower part of the syringe absorbs the liquid again due to the vacuum caused by the lifting of the core; this cycle completes the filling of the ampoules
.

2.
Injection perfusion mechanism It consists of a needle 10, a needle holder 18 and a needle holder seat 19
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Its function is to provide the movement of the needle 10 into and out of the ampoule to perfuse the medicinal solution
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The needle 10 is fixed on the needle holder 18 and slides up and down along the cylindrical guide rail on the needle holder 19 along with it to complete the filling of the ampoules
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Generally, injections need to inject some inert gas after filling the liquid medicine to increase the stability of the preparation
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The air-filled needle and the liquid-filled needle are installed side by side on the same needle holder and act synchronously
.

3.
The filling stop mechanism is composed of a pendulum rod 12 , a travel switch 14 , a tension spring 15 and a solenoid valve 4
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Its function is that when the bottle feeding mechanism is short of bottles at the filling station due to some fault, it can automatically stop filling, so as to avoid waste and pollution of the liquid
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When the filling station is short of bottles for some reason, the tension spring 15 pulls down the pendulum rod 12 until the contact of the pendulum rod and the contact of the travel switch 14 are in contact, and the travel switch is closed, causing the solenoid valve 4 to act, so that the ejector rod 3 loses its alignment.
The top action of the pressing rod 6 achieves the effect of stopping irrigation
.