Automatic clamping device of film blowing machine

Abstract

The invention discloses an automatic clamping device of a film blowing machine. The automatic clamping device of the film blowing machine comprises a clamping mechanism and a lifting mechanism. The clamping mechanism is arranged below the lifting mechanism. The clamping mechanism comprises a first clamping block and a second clamping block. The first clamping block and the second clamping block are each provided with multiple moving pins at equal intervals. The first clamping block and the second clamping block are internally hollow. Elastic assemblies matched with the moving pins are arrangedin the first clamping block and the second clamping block. The mechanisms mutually cooperate so that the moving pins can extend and retract through the elastic assemblies in the shell. When the moving pins clamp a filtering net, the filtering net squeezes the moving pins, the moving pins in contact with the filtering net retract inwards through the elastic assemblies, the moving pins not in contact with the filtering net keep the original state, and the retracted moving pins form a pit adaptive to the filtering net; after the filtering net is released, the retracted moving pins can recover the original state, and therefore the moving pins can clamp the filtering net next time. The automatic clamping device of the film blowing machine is adaptable to filtering nets in various shapes and arrangement states.

Description

technical field [0001] The invention belongs to the field of mechanical automation, in particular to an automatic clamping device for a blow molding machine. Background technique [0002] Before the blown film is formed by the blown film machine, it needs to be filtered by a filter to remove impurities and particles in the plastic solution, so that the formed film has a beautiful appearance. Because the impurities in the solution will adhere to the filter screen, the filter screen needs to be replaced and cleaned after a period of use, otherwise the filter screen holes will be blocked and the solution will not be able to circulate normally. Not only does the machine need to be shut down each time the filter is replaced, but it takes at least 15 minutes to replace the filter, which affects production efficiency and brings economic losses to the manufacturer. In addition, manual replacement of the filter is cumbersome and inefficient, and the temperature of the plastic solutio...

AI Technical Summary

Problems solved by technology

Since the impurities in the solution will adhere to the filter, the filter needs to be replaced and cleaned after a period of use, otherwise the filter will be blocked and the solution will not be able to circulate normally

Not only does the machine need to be shut down each time the filter is replaced, but it takes at least 15 minutes to replace the filter, which affects production efficiency and brings economic losses to the manufacturer. In addition, manual replacement of the filter is cumbersome and inefficient, and the temperature of the plastic solution is very high. When replacing, if you don't pay attention, you will be burned, which is very unsafe

[0003] There is an existing device that can automatically replace the filter screen at regular intervals, which successfully avoids the above problems, but there are many types of filter screens, and the shapes and placement positions of the filter screens are also different. Difficult to grip and remove

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