Packaging bag edge sealing device

Abstract

The invention discloses a packaging bag edge sealing device. The packaging bag edge sealing device is matched with a cam mechanism and comprises edge sealing components, two rotary arms and two buffer mechanisms. Each rotary arm is pivotally connected on a frame and is divided into an abutting portion and a clamping portion, each clamping portion is assembled with one sealing component, the cam mechanism drives the two abutting portions to drive the two clamping portions to harmoniously rotate to open or close; each buffer mechanism is arranged on one abutting portion and comprises a rotating block and an elastic component, one end of the rotating block is pivotally connected on the abutting portion, the other end of the rotating block contacts with the cam mechanism, the cam mechanism is arranged between the two rotating blocks, and the elastic components elastically push the rotating blocks along the direction close to the cam mechanism. Each edge sealing component comprises a first sealing block and a second sealing block which are mutually separated, and the first sealing block and the second sealing block are crossly mounted on the clamping portions in a manner that an included angle therebetween can be adjusted. The packaging bag edge sealing device can improve edge sealing quality of packaging bags and prolong the service lives of the same.

Description

technical field [0001] The invention relates to an edge-sealing device, in particular to an edge-sealing device for a packaging bag which is suitable for edge-sealing processing on a packaging material tape on a packaging machine. Background technique [0002] With the continuous improvement of people's living standards, the demand for various foods has also increased greatly, which has further stimulated the rapid development of the food packaging industry and created excellent conditions for the wide application of packaging machines. [0003] A packaging machine is a device used to manufacture packaging bags, including an edge sealing mechanism, a cam mechanism that drives the edge sealing mechanism to perform edge sealing, a feeding mechanism, and a pulling mechanism that pulls the packaging material belt. In the production process of the packaging bag, when the pulling mechanism makes the packaging material belt be conveyed in the vertical direction, the edge sealing me...

AI Technical Summary

Problems solved by technology

[0004] Wherein, in the edge banding mechanism, the first edge banding block used for vertical edge banding and the second edge banding block used for horizontal edge banding form an integral structure together, so the pulling mechanism makes the packaging material belt When transported in the vertical direction, when the first edge banding block and the second edge banding block edge seal the packaging material belt, the packaging material belt will be deformed and moved, so that the edge sealing place of the first edge banding block is in the same position as the second edge banding block. The angle between the edge sealing parts of the two edge sealing blocks cannot achieve the desired effect, thus reducing the edge sealing quality of the packaging bag

At the same time, the edge banding mechanism is driven by the hard collision of the cam mechanism, so when the cam mechanism drives the edge banding mechanism to do the edge banding action, the packaging material belt will deflect during edge banding. Wrinkled defects further reduce the quality of the edge banding, on the other hand it will damage the edge banding mechanism and shorten its life

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