JPH0133444Y2 - - Google Patents

Description

[Detailed description of the invention] <<Field of industrial application>> This invention relates to a bag making device for a vertical automatic filling and packaging machine for packaging konjac fruits, dough, etc. More specifically, it relates to forming for bag making. The present invention relates to a bag making device in which the frame is divided into left and right movable frames that are movable in the width direction, and the width of the movable frames can be adjusted.

《Prior Art》 As a bag making device for a conventional vertical width-adjustable automatic filling and packaging machine, for example, Japanese Patent Laid-Open No. 59-26408
No., Jikko No. 58-2724, etc.

The structure of this type of bag making machine is that the forming frame for bag making, which is generally used to form bags into a predetermined cylindrical shape from continuously supplied film strips, is divided into two parts, which are movable in the width direction. Form a movable frame.

By moving the movable frame in the width direction in accordance with the final packaging form, the width of the entire bag forming frame is adjusted, providing versatility.

<<Problems to be solved by the invention>> However, in the conventional bag making machine described above, when the movable frame is moved outward in the width direction, a gap is formed between the edges of both movable frames. Put it away. As a result, the film passes through the bag making device while being conveyed in contact with the edge of the movable frame, resulting in vertical lines (scratches) on the film. This not only reduces the strength at that location, but also leaves the scratches on the final package, resulting in an unsightly appearance. Furthermore, due to the contact resistance between the film and the movable frame that occurs during the above-mentioned contact, the film may not be able to pass smoothly through the bag-making device, and there is a risk that stable bag-making operations may not be performed.

In particular, when the movable frame is set for a wide-width item to be packaged, the above-mentioned gap also becomes wide, making the above-mentioned problem more pronounced.

The present invention was developed in view of the above-mentioned problems, and its purpose is to form bags smoothly without damaging the film, regardless of the width of the forming frame for bag making, that is, the amount of movement of the movable frame. The purpose of the present invention is to provide a bag making device for a vertical automatic filling and packaging machine that can be used in a vertical type automatic filling and packaging machine.

<Means for Solving the Problems> According to the bag making device for the vertical automatic filling and packaging machine according to the present invention, the outer forming frame for bag making, which is formed by storing a vertical cylindrical hopper inside, is The method is divided into left and right movable frames that can be moved in different directions, and an outwardly protruding operating rod is directly or indirectly connected to the movable frame, and the width of the movable frame is adjusted by rotating the operating lever. In a flexible bag making machine, a fixed plate is disposed inside the rear part of the movable frame so as to straddle the ends of both the movable frames, and the gap defined between the two movable frames is always covered. made possible.

<<Operation>> By rotating the operating rod forward and backward, the movable frame is moved in the width direction, and the width is adjusted according to the packaging form.

At this time, since the gap formed between the edges of the movable frame is covered with the fixed plate, the film does not enter the gap and come into contact with the edge of the movable frame.

Therefore, bags can be made smoothly and neatly.

<<Embodiments>> Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

The figure shows a bag making device in a vertical automatic filling and packaging machine according to the present invention, in which 1 is a cylindrical hopper that guides the objects to be packed vertically and smoothly;
Although not shown, the upper end of the cylindrical hopper 1 is widened in order to facilitate the introduction of items to be packaged, and is fixed to a frame (not shown) of a packaging machine. A pair of left and right movable frames 2-2 are disposed on both sides of the cylindrical hopper 1 in the width direction so as to surround both sides of the cylindrical hopper 1, and a pair of movable frames 2-2 is disposed inside the rear of both movable frames 2-2 so as to straddle them. fixing plate 3
is installed. This fixed plate 3 is connected to a wall plate 5 via a connecting rod 4 extending rearward through the rear gap of both movable frames 2-2, and the lower end of this wall plate 5 is connected to a fixed plate fixed to the machine frame. It is combined with 6. The front end edges of both the movable frames 2-2 are separated from each other, and the end edge 7a of the film guide frame 7 is positioned between the separated front end edges so that their palms are joined together. Therefore, a packaging film (not shown) is introduced between the cylindrical hopper 1 and the pair of left and right movable frames 2-2 and the fixed plate 3, and is guided in close contact with the inner surfaces of these movable frames and the fixed plate. The film is formed into a cylindrical shape with a rectangular cross section, and both ends of the film pass through the edge 7a of the guide frame 7 and are brought together in the shape of palms together.

A screw hole 8a-8 is provided on the back side of both movable frames 2-2.
A screw block 8-8 having a hole a is fixed thereto, and a guide shaft 9-9 is inserted through the upper and lower parts of the screw block 8-8. and,
Both ends of each guide shaft 9 are connected to the side wall plates 10- of the fixed plate 6.
10, and both screw blocks 8-8
is movable along both guide shafts 9-9 in the width direction of the bag-making device, moving toward and away from each other. Further, in the screw hole 8a-8a of both screw blocks 8-8, a screw rod 11 is supported by passing through the side wall plate 10-10.
The threaded portion 11a is screwed together. This screw part 1
Threads are formed in opposite directions in the portion of 1a that is screwed into the screw block 8-8 and the screw holes 8a-8a of both screw blocks 8-8, and the screw threads are formed by rotating the screw rod 11 in one direction. The blocks 8-8 move away from each other, and as the screw rod 11 rotates in the other direction, the screw blocks 8-8 move toward each other. The screw rod 11 projects laterally outward through the guide frame 7, and has an operating handle 12 attached to its tip.

Next, the operation of the above embodiment will be explained. First, when the operating handle 12 is rotated in one direction, the threaded rod 11 on the tip side of this handle is rotated into the threaded block 8.
-8 in the direction of separating them. As a result, the movable frames 2-2 integrally connected to the screw block 8-8 move in a direction away from each other, so that the width between the movable frames 2-2 increases. Since the packaging film is made into bags while it moves downward while being in close contact with the inner surface of the movable frame 2-2, by increasing the width of the movable frame 2-2, large cylindrical bags can be made. It will be made into bags.

On the other hand, when the operating handle 12 is rotated in the opposite direction from this state, the screw rod 11 moves the screw blocks 8-8 toward each other. As a result, the screw block 8-8 and the movable frame 2-2 integrated with each other move toward each other, and the width between the movable frames 2-2 is reduced. A shaped bag will be made into a bag.

At this time, since the gap formed between the edges of the movable frame 2-2 is covered with the fixed plate 3, the film will not enter the gap and come into contact with the edge of the movable frame 2-2. .

That is, the film comes into surface contact with a substantially flat surface formed by the rear inner surface of the movable frame 2 and the fixed plate 3.

In addition, the rear part as used in the present invention means the relative position when the end edge side of the film is defined as the front side when a belt-shaped film is formed into a cylindrical shape. It has nothing to do with the front or rear of the machine, etc.

[Effects] As described above, in the bag making machine of the present invention, the forming frame for bag making can be moved while the cylindrical hopper is fixed by rotating the operating rod such as a screw rod that protrudes outward. By enlarging or reducing the width, it becomes possible to manufacture cylindrical bags from large sizes to small sizes very easily.

Furthermore, in the present invention, the width of the movable frame constituting the forming frame can be adjusted by rotating the operating rod, so fine adjustment is possible.

Further, as described above, the fixed plate can prevent the film from entering the gap formed between the movable frames. As a result, bags can be formed smoothly without damaging the film, regardless of the width of the bag-making forming frame, ie, the moving position of the movable frame.

[Brief explanation of the drawing]

The figure is a perspective view showing an embodiment of the bag making device in the vertical automatic filling and packaging machine according to the present invention. 1... Cylindrical hopper, 2... Movable frame, 3... Fixed plate, 7... Film guide frame, 8... Screw block, 11... Screw rod, 12... Handle.

Claims (1)

[Scope of utility model registration request] The outer forming frame for bag making, which houses a vertical cylindrical hopper inside, is divided into left and right movable frames that can be moved in the width direction, and an operating rod that protrudes outward is attached to the movable frame directly or indirectly. In the bag making machine, the width of the movable frame can be freely adjusted by rotating the operating rod, a fixed plate is provided inside the rear part of the movable frame so as to straddle the ends of the movable frames. 1. A bag making device for a vertical automatic filling and packaging machine, characterized in that a bag forming device is provided in a vertical automatic filling and packaging machine, and is capable of constantly covering a gap defined between both movable frames.