CN201224519Y - Traverse sealing and cutting apparatus for pillow-shaped automatic packaging machine - Google Patents

Abstract

The utility model relates to a horizontal sealing and cutting device suitable for pillow-shaped automatic packaging machines, which is used for horizontal heat-sealing and cutting automatically according to the bag length of the packaged objects set by the machine during the packaging process of the pillow-shaped packaging machine. The transverse sealing and cutting device includes a pair of knife rollers (upper knife roller and lower knife roller) that rotate in opposite directions, parallel to each other, and unidirectionally rotate around the axes of the respective knife rollers to achieve transverse heat sealing and cutting of packages. The center line of the cutter blade on the upper and lower knife rollers is a cylindrical helix, and the surface of the heat-sealing roller directly in contact with the heat-sealed film is a cylindrical helix. The cylindrical helical cutting knife is located in a helical groove in the middle of the heat-sealing roller, and the cutting knife can be adjusted in the groove according to the need. The utility model has the effect of slowing down the impact, vibration and noise of the horizontal sealing, and can improve the quality and efficiency of the horizontal sealing and cutting.

Description

A horizontal sealing and cutting device suitable for pillow-shaped automatic packaging machines

technical field

The utility model belongs to the technical field of packaging machinery, in particular to a horizontal sealing and cutting device for pillow-shaped automatic packaging machines, in particular to a horizontal sealing and cutting device for sealing and cutting flexible packaging bags.

Background technique

Pillow packaging is a three-sided sealing (a horizontal seal at each end and a vertical seal in the middle) that looks like a pillow in the form of film packaging. The inner packaging can be liquid, shaped items, or bulk materials. Pillow-shaped automatic packaging machine is an electromechanical integrated packaging equipment that automatically completes the processes of feeding, film feeding, bag making, wrapping, longitudinal sealing, horizontal sealing, cutting, and finished product delivery. It belongs to continuous packaging. The vast majority of its horizontal sealing and cutting use rotary horizontal sealing, and very few use reciprocating horizontal sealing and cutting methods. The utility model relates to a rotary transverse sealing and cutting device. The horizontal sealing of pillow-shaped packaging is the most critical part to reflect the quality of the finished packaging product. The running speed and stability of the machine, as well as the appearance quality of the packaged product, mainly depend on the quality of the horizontal sealing and cutting mechanism of the packaging machine.

The pillow-shaped automatic packaging machine is divided into horizontal type and vertical type according to the direction of the film. According to the number of upper knives on the knife roller of the horizontal sealing mechanism, there are single-knife seats, double-knife seats, and multi-knife seats. The current rotary horizontal sealing and cutting device has various forms due to the different heating methods and the shape of the sealing pattern, such as high-frequency electric heating knife, round electric heating wire, straight cutting knife, zigzag cutting knife, etc., but they all belong to the "linear type". "—that is, the centerline of the blade is a straight line parallel to the axis of the cutter roller. In this way, the cutting of the full width of the packaging bag is completed in an infinitely short moment, and the sealing of the full width of the packaging bag is also completed in a very short time. Since the incision of the entire bag width belongs to the "one-size-fits-all" cutting knife, and the rotation of the knife roller itself has angular acceleration, it will cause a large impact when sealing and cutting. This impact will directly affect the packaging speed of the packaging machine, the service life of the knife roller and the knife, and the life of the whole machine, and directly affect the performance of the machine, while generating large vibration and noise.

Contents of the invention

The purpose of the utility model is to provide a helical horizontal sealing and cutting device to overcome a series of disadvantages caused by the excessive impact of the linear chopping knife type one-size-fits-all cutting. Its direct effect is to change the one-size-fits-all cutting method of the chopping knife into the point-by-point sealing and cutting method of the scissors cutting cloth, so as to greatly reduce the impact, vibration and noise of the horizontal sealing, and improve the quality and efficiency of the horizontal sealing and cutting.

The utility model can be realized through the following technical solutions

A horizontal sealing and cutting device suitable for pillow-shaped automatic packaging machines, including a pair of knife rollers with opposite rotation directions and parallel rotation axes, which can rotate in one direction around the axes of the respective knife rollers to realize transverse heat sealing and cutting of packages. The knife rollers are divided into upper The knife roller (10) and the lower knife roller (16) are characterized in that: the knife roller is mainly composed of the knife roller shaft (1), the knife roller seat (4), the heat sealing roller (2), the cutting knife (6) and the One end of the roller shaft (1) is composed of a conductive slip ring (3), the heat-sealing roller (2) is fixed on the knife roller base (4), and a heating device (5) for heat-sealing is installed inside the heat-sealing roller (2) , the cutting knife (6) is installed in the groove in the middle of the heat-sealing roller (2).

The described horizontal sealing and cutting device suitable for pillow-shaped automatic packaging machines is characterized in that: the overall shape of the heat-sealing roller (2) and the cutting knife (6) is a cylindrical spiral: the heat-sealing roller (2) is connected with the film The contact working surface is a cylindrical helical surface, and the cutting edge center line of the cutting knife (6) is a cylindrical helical line.

The technical scheme of the utility model has the following beneficial effects

1 Can effectively reduce the impact, vibration and noise of the horizontal seal;

2 fast packing speed;

3 High sealing quality;

4 Improve the service life of the packaging machine

Description of drawings

Fig. 1 is the structural representation of the utility model

Fig. 2 is a schematic diagram of installation and use of the utility model

Description of drawings

1 knife roller shaft, 2 heat sealing roller, 3 conductive slip ring, 4 knife roller seat, 5 heating device, 6 cutting knife, 7 film reel, 8 film, 9 former, 10 upper knife roller, 11 fast delivery belt, 12 Feed belt, 13 Wrapped object, 14 Vertical sealing roller, 15 Pinch roller, 16 Lower knife roller

Detailed ways

The spiral transverse sealing and cutting device will be described below in conjunction with the accompanying drawings: Fig. 1 is a schematic diagram of the structure of the knife roller. The knife roll mainly consists of a knife roll shaft (1), a knife roll seat (4), a heat sealing roll (2), a cutting knife (6) and a conductive slip ring (3) positioned at one end of the knife roll shaft (1). The electricity is introduced and exported by the conductive slip ring (3), the heat-sealing roller (2) is fixed on the knife roller base (4), and the heating device (5) for heat-sealing is installed in the heat-sealing roller (2), and the cutting Knife (6) is installed in the groove in the middle of heat-sealing roller (2), can regulate the height that blade protrudes from heat-sealing roller (2) in groove according to factors such as film thickness. Here, the overall shape of the heat-sealing roller (2) and the cutting knife (6) is a cylindrical helical shape: the working surface on the heat-sealing roller (2) in contact with the film is a cylindrical helical surface, and the centerline of the blade of the cutting knife (6) is It is a cylindrical helix, and has a certain helix angle with the axis line of the knife roller shaft (1). It can be left or right, but the heat sealing roller (2) and the cutting knife of the upper and lower knife rollers (6) The helical directions must be opposite and the helix angles must be equal.

The structure principle of the lower cutter roller is basically the same as that of the upper cutter roller, the only difference is that the direction of the spiral is opposite to that of the upper cutter roller. to turn.

Referring to Fig. 2, the horizontal sealing and cutting device of the present utility model is installed on a horizontal pillow-shaped automatic packaging machine, replacing the original "one size fits all" linear horizontal sealing and cutting device, and the horizontal sealing and cutting of wrapped objects can be completed.

Claims (2)

1. A horizontal sealing and cutting device suitable for pillow-shaped automatic packaging machines, including a pair of knife rollers with opposite rotation directions, parallel rotation axes, and one-way rotation around the axes of the respective knife rollers to achieve transverse heat sealing and cutting of packages. The knife rollers It is divided into an upper cutter roller (10) and a lower cutter roller (16), and it is characterized in that: the cutter roller is mainly composed of a cutter roller shaft (1), a cutter roller seat (4), a heat sealing roller (2), a cutting knife (6) and It consists of a conductive slip ring (3) located at one end of the knife roller shaft (1), the heat sealing roller (2) is fixed on the knife roller seat (4), and a heating device for heat sealing is installed inside the heat sealing roller (2) 5), the cutting knife (6) is installed in the groove in the middle of the heat-sealing roller (2). 2. A horizontal sealing and cutting device suitable for pillow-shaped automatic packaging machines according to claim 1, characterized in that: the overall shape of the heat-sealing roller (2) and the cutting knife (6) is a cylindrical spiral: the heat-sealing roller (2) The working surface in contact with the film is a cylindrical helical surface, and the center line of the blade of the cutting knife (6) is a cylindrical helical line.

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