Small-volume injection (water needle) ampoule drawing and sealing causes the carbonization of the coke head, bubble head, pointed head, steamed bread
1 The quality of the appearance of the ampoules after potting
.1 The flat head, that is, the top of the ampoule is flattened but not drawn. Cause: The preheating flame and the drawing flame are too small; the pressure ampere bearing is not flexible or the pressure is too small; the individual ampoules are too thick. Solution: Strengthen the fire energy of the two groups before and after; replace the new bearing or adjust the spring inside the ampoule pressure bracket to strengthen the pressure so that the ampoule can rotate normally to form the drawing; remove the unqualified ampoule.
1.2 The tip of the ampule with the tip is sealed. Cause: The drawing flame is too small; the tempering time after the drawing of the ampoule is too short; the bottom end of the drawing clip is too far from the center line of the flame horizontal; the individual ampoules are too thick. Solution: Strengthen the drawing flame strength; adjust and control the fire head cam to extend the tempering time; adjust the bottom end of the wire drawing clip slightly higher than the flame horizontal center line by about 1 mm (mechanical normal position); remove the unqualified ampoule.
1.3 After the bubble head is melted, the top of the ampoule forms a large bubble and is easily broken. Cause: The drawing flame is too strong; the tempering time is too long after the drawing of the ampoule; the bottom of the drawing clip is slightly lower than the horizontal center line of the flame, although it can be sealed but it is easy to form a small bubble head. Solution: Reduce the drawing flame strength; shorten the tempering time of the ampoule after drawing; adjust the drawing clamp to the horizontal line of the flame to the normal distance.
1.4 The taro is melted and the top of the ampoule forms a depression. Cause: The ampoule is formed by cooling and shrinking after the bubble is formed in the drawing process; if the heating flame is too small, some tiny water vapor on the wall of the ampoule cannot be baked. These low-temperature water vapors cause the newly formed top arc of the ampoule to be cold-shrinked to form a crucible. head. Solution: According to the method of solving the bubble head; strengthen the heating flame, so that the neck of the ampoule is fully heated, so that the tiny water vapor volatilizes as early as possible.
1.5 The broken head means that the top of the ampoule is not sealed. Cause: mechanical reasons; excessive bubble head; excessive steamed bread. Solution: Adjust the drawing clamp and the flame horizontal center line to the normal distance; handle according to the bubble head and the hoe method.
2 Anzhen Jiaotou carbonization problem <br> Jiaotou, refers to the Anzhen neck liquid was burnt during the sealing process to form coking spots, was removed during the light inspection. The reasons for the adhesion of the ampoule to the neck are: the needle position is not correct; when the needle is withdrawn from the ampoule, the remaining droplets of the needle stick to the neck wall; the needle enters the ampoule too deep or too shallow, causing the liquid to splash when the medicine is poured or Spray back to the neck wall; the stroke is not correct when the needle is filled. Solution or improvement method: adjust the needle fixing bolt so that the needle is in the center of the ampoule when filling the medicine; connect a buffer ball on the medicine feeding line, connect the medicine to the medicine tube at the other end, and close the ball at the other end. /3 volume of liquid medicine, or a clip can be clamped on the medicine feeding line to control the dosage, so as to avoid the residual needle phenomenon; the tip of the needle Zui is changed into three or two holes and the medicine is extended during the medicine filling. It can be 1~2 mm under the neck of Anzhen. This method not only overcomes the splashing of the liquid during the filling, but also reduces the residual phenomenon of the needle; adjusts the filling cam, starts the perfusion when the needle reaches the neck of the ampoule, stops the perfusion before the needle is lifted, and avoids the needle during the movement. Adhesion of the liquid to the neck wall.
3 Loading problems <br> Frequently asked questions: The loading is unstable and the adjustment nut does not work. Cause: The core of the drug filling device and the outer casing are not tight; the elastic force of the spring is not uniform; the applicator is not fixed in the sleeve. Solution: Replace the matching and tight applicator; replace the new spring; add a washer or a tape on the contact between the applicator and the sleeve to fix the applicator in the sleeve; often check if the adjustment nut is loose. And promptly remove debris from the bottom of the nut. (Recommended to use our factory's glass perfusion device resistant to strong acid and alkali corrosion. Please visit our booth or:)
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