Plastic bag folding device

Abstract

The invention discloses a plastic bag folding device. The folding device mainly comprises a machine frame, a pressing plate driving mechanism, a folding platform and a lifting mechanism and is characterized in that secondary folding turning plates, handle turning and folding plates and a swing type pressing plate are further arranged on the machine frame. After handles of two plastic bags are turned and folded to the secondary folding turning plates through the handle turning folding plates, the swing type pressing plate under driving of the pressing plate driving mechanism moves forwards andpresses downwards on the secondary folding turning plates so that the secondary folding turning plates and the front portion of the pressing plate can jointly clamp the handles and the front portionsof the plastic bags for turning and folding, and therefore, the phenomena that the handles of the two plastic bags are prone to scatter and droop in the folding process are avoided; meanwhile, the rear side of the pressing plate also carries out rotary downward pressing on the position of a folding line to form a fold so that the folded plastic bag can be stable and not prone to rebound; and the device is simple in structure and stable and reliable in folding work.

Description

technical field [0001] The invention relates to a folding device for plastic bags. Background technique [0002] In the prior art, the conveying device of the plastic bag punching machine can convey dozens of stacks of rectangular double-layer plastic films produced on the bag making machine to the chopping board, and cut them into two pieces with a punching knife. Plastic bag 7 in the state of handle 71, such as Figure 7 As shown, the conveying device then conveys the die-cut plastic bag to the predetermined working position. In order to facilitate storage, transportation and sales, these piles of plastic bags also need to be folded multiple times, and then bundled or packed into packaging bags. Its specific folding procedure is: firstly need to fold the two handles 71 of the plastic bag 7 to the middle along the handle folding line 701 respectively, folded into Figure 8 state shown, and then fold back a second time at the position shown in the second folding line 702, ...

AI Technical Summary

Problems solved by technology

For the handles of two plastic bags, it is completely possible to use the handle folding plate to fold. The problem is that when the second folding is performed, the folding of the first folded flap will easily spread out the folded handles. If the turning speed is slower, the head of the entire plastic bag will sag and cannot be folded

If a clamping device is used to fix the plastic bag on the first folded plate, it is difficult for the clamping device to withdraw from the folded plate after the folding work is completed, and the position of the secondary folding line must be fixed during the folding process. press to create creases

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