After drawing and sealing, the bottle top produces a deflated head
Possible causes:
1. When the needle rises and falls, it touches the bottle mouth.
2. The needle itself has the problem of dropping liquid or hanging liquid.
3, after drawing the upper laminar flow wind speed is too large, resulting in too fast cooling after sealing.
4. The particularity of liquid pharmaceutical products themselves.
5. Products that need to be flushed with carbon dioxide gas after filling.
Treatment method:
1. Adjust the alignment between the needle and the bottle mouth to ensure that the needle does not touch the bottle wall.
2, handle the needle drop and hang liquid problem.
3. Appropriately reduce the wind speed of the laminar flow hood.
4. Adjust the CAM action time of drawing group appropriately according to the performance of liquid medicine, observe the change effect, and adjust the best action time.
5. After drawing, add quartz tube heater to heat the bottle out of the bottle section, which can alleviate the seriousness of the deflated head, but can not completely solve the problem.
There is dithering in the up-and-down operation of the filling needle holder
Possible causes:
1, filling needle frame lifting CAM wear serious steps.
2. The lifting needle roller bearing of the filling needle holder has been damaged.
3. The upper and lower linear ball bearings of the lifting shaft of the filling needle holder have been damaged.
4. The lifting guide bearing of the filling needle holder has been damaged or the clearance is too large.
Treatment method:
1, replace the lifting CAM.
2. Replace needle roller bearings.
3. Replace linear ball bearings.
4. Replace the guide bearing or adjust the clearance between the bearing and the guide rod.
The drawing glass residue is too long
Possible causes:
1. The material of ampoule itself is different, and the length of glass residue wire is the same. Usually the tan bottle is slightly longer than the white bottle.
2. It is related to the pressure of combustion gas and the height of flame temperature.
3. The CAM action time of the wire drawing group is not coordinated, such as the bottle clamping time of the wire drawing pliers is too early, the lifting CAM of the wire drawing rises too early, and the fire head CAM rises too late.
Treatment method:
1, according to the material characteristics of the bottle, adjust the best effect.
2. Adjust the pressure of the combustion gas properly and change the temperature of the flame.
3. Adjust the CAM action time of wire drawing group and fire head group, and observe the change of wire length to determine the best CAM action time.