JPS5852920Y2 - Original film cutting device in bag making machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cutting device for raw film in a bag making machine.

In a conventional film cutting device, the film is cut by a cutter that reciprocates in the vertical direction every predetermined length while moving the film in the horizontal direction.

However, in a bag making machine, cutting the raw film is the final stage of the manufacturing process, and the raw film is not only supplied as a cylindrical film from the beginning, but also always folded vertically. It becomes a folded cylindrical film and is supplied to the cutting device.

When the vertically folded cylindrical film is moved in the horizontal direction, the positional relationship between the upper film and the lower film may shift, or contact between the feed rollers in the transfer device, etc. In many cases, the sides of the film that is being used come first and the middle part of the film is left behind and ends up trailing.If the film is cut in this condition to form a bag, the opening of the bag will be extremely uneven. It has the disadvantage that it cannot be turned into a product.

The purpose of the present invention is to eliminate these drawbacks, and the end portion of the film feeding device is provided on the upper side, and a pair of feeding belts facing each other is provided on the lower side. By providing a film receiving device in which several strips of film are vertically arranged, and a cutter being provided between the end of the film feeding device and the film receiving device, the original film fed to the cutter is placed on the upper side. The end of the provided film feeding device will fall vertically downward in a natural state, and each film located at the front and back of the folded cylindrical film with an open bottom will naturally hang down. The original fabric used in the bag making machine can be fed to the cutter in a correctly folded state without shifting due to the gravity of the paper, and by cutting it, a uniform product can be obtained with a high yield. The present invention provides a film cutting device.

Another purpose of the present invention is that by providing support rollers above and below the reciprocating cutter, the original film can be fixed during cutting, making cutting with the cutter easier and more reliable. The purpose of the present invention is to provide a raw film cutting device for a bag making machine that can be used in a bag making machine.

Furthermore, another object of the present invention is to provide a film receiving device with a plurality of vertically arranged feed belts arranged under a terminal portion of a film feeding device and arranged in pairs facing each other. Particularly, the present invention provides a cutting device for raw film in a bag making machine that can continuously feed the film cut by a cutter to the outside of the machine or to the next process without wrinkling the film. .

That is, in the present invention, the terminal portion of the film feeding device is provided at the upper side so that the original film is fed from the upper side to the lower side, and a pair of film feeding devices are provided on the lower side facing each other. A film receiving device is provided with several feeding belts arranged in a vertical direction, and a cutter that is provided with upper and lower support rollers between the end portion of the film feeding device and the film receiving device and reciprocates in the horizontal direction. The gist of the present invention is the structure of a raw film cutting device in a bag making machine, which is characterized by the following.

Next, the present invention will be explained according to the illustrated embodiment. 1 is a transfer device for transferring the raw film to be cut and the cut film, and includes a film supply device and a film receiving device. For example, various conventionally used devices can be employed as the film feeding device, such as one consisting of rotationally driven feed rollers 2, 2, . . . .

The film receiving device is constructed by vertically arranging several pairs of feed belts 3.3 facing each other.

The transfer device 1, which consists of a film supply device and a film receiving device, is arranged in a vertical direction, and receives the supply of the original film from the original film support device 4 provided on the rear side thereof, and the transfer device 1 is arranged vertically. The original film is fed so as to naturally fall vertically downward from the end of the film feeding device such as the feed roller 2.

5 is a cutter, which is composed of a heating wire,
It is supported by the tips of supporting arms 6, 6 which reciprocate vertically with both sides thereof directed, and is disposed between the film supply device and the film receiving device of the transfer device 1.

The support arm 6 illustrated in the figure is always kept in the forward position by a spring 7, and when performing cutting work, the support arm 6 is horizontally retreated against the spring 7 by the action of a hydraulic device 8, etc. to move the cutter 5. The film is cut perpendicularly to the original film, and after cutting, the hydraulic device 8 is released and the tension of the spring 7 causes the support arm 6, that is, the cutter 5
is returned to its old position and the work is completed.

Note that the original film may be cut when the cutter 5 moves forward.

Reference numeral 9 denotes support rollers, which are provided before and after the installation position of the cutter 5, which is provided between the film supply device and the film receiving device of the transfer device 1, and are used to fix the original film during cutting. It is.

Reference numeral 10 denotes a phototube device, which is installed in a suitable position of the transfer device 1, that is, the film supply device or the film receiving device, so that its position can be adjusted freely, and is used to detect marks and the like provided on the original film being transferred through the transfer device 1. By detecting the flow state of the anti-film, the operation of the transfer device 1 is stopped, and the hydraulic device 8 of the cutter 5 is started.

The apparatus of the present invention is configured as described above, and the original film a is supported by the original film support device 4, and one end of the original film a is stretched and the feed rollers 2, 2 of the transfer device 1 are stretched. The hanger is passed to the film feeding device consisting of ..., and the original film a is allowed to hang down from the end thereof, and the lower end is slightly connected to the film receiving device consisting of the feeding belt 3゜3... Installing.

Next, when the bag making machine including the transfer device 1 is started, the original film a supported on the original film support device 4 is sequentially supplied to the film supply device and the film receiving device of the transfer device 1. When the phototube device 10 detects the mark provided on the supplied original film a or the cut end of the original film a, the phototube device 10 operates an appropriate switch by its action, and the phototube device 10 consists of a film feeding device and a film receiving device. At the same time, the operation of the transfer device 1 is stopped to stop the transfer of the original film a, and the hydraulic device 8 in the cutter 5 is started to move the cutter 5 horizontally backward together with the support arm 6 against the spring 7. 5 is cut perpendicularly to the original film a.

Note that the direction in which the cutter 5 moves back and forth may be opposite to the above-mentioned direction.

After cutting, the hydraulic device 8 is released and the tension of the spring 7 causes the cutter 5 together with the support arm 6 to return to the old position, completing the cutting operation.

Further, the cutting operation may be performed in any case where the cutter 5 reciprocates.

At this time, the transfer device 1 starts operating again, and the cut film a is sent out of the machine by the film receiving device, and the film feeding device continues to feed the original film a to the cutting device, and the same operation is performed. Cutting operations can be performed repeatedly and continuously.

In addition, as a film receiving device, there are several feed belts 3, 3, etc., which are arranged vertically, with feed bells 3a, 3a located on the outside, and feed bells 3b, 3b located on the inside.
When the rotational speed of the cut film 3b is varied, there is an advantage that the cut film can be reliably separated from the original film.

As described above, when using the device of the present invention, the terminal portion of the film feeding device is provided on the upper side, and a pair of feeding belts 3, 3 facing each other are provided on the lower side.
. . are provided in a film receiving device in which several strips are vertically arranged, and a cutter 5 is provided between the end portion of the film feeding device and the film receiving device.
The raw film a fed to the cutter is fed vertically downward in a natural state from the end of the film feeding device installed on the upper side, so that it is folded into a cylindrical film with an open bottom. Each film located before and after a hangs down due to natural gravity, and is fed to the cutter 5 while maintaining the correct folded state without shifting from each other, so that it can be cut uniformly. This has the practical benefit of being able to obtain high-yield products.

Further, according to the present invention, since the supporting rollers 9, 9 are provided above and below the reciprocating cutter 5, the original film a can be stably fixed when being cut by the cutter 5. Therefore, there is a practical benefit in that cutting by the cutter 5 can be easily and reliably performed.

Further, according to the present invention, the film receiving device is a film, and several feed belts 3, 3, etc., which are located under the terminal portion of the film feeding device and are arranged in a pair facing each other in the vertical direction, are arranged in the vertical direction. cutter 5.
This has the practical advantage that the cut film a can be continuously fed to the outside of the machine or to the next process without wrinkles.

In addition, when using the device of the present invention, since the transfer device 1 for the raw film a is arranged vertically, it has the practical benefit of being able to reduce the floor space on which the bag making machine is installed.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, with FIG. 1 being a side view and FIG. 2 being a front view of the main parts. The symbols in the figure are explained as follows. 1 is a transfer device, 2 is a feed roller, 3 is a feed belt, 4
is the original film support device, 5 is the cutter, 6 is the support arm,
7 is a spring, 8 is a hydraulic system, 9 is a support roller 10
is a phototube device.

Claims (1)

[Scope of utility model registration request] The terminal part of the film feeding device is located on the upper side so that the original film is fed from the upper side to the lower side, and several pairs of feeding belts facing each other are installed on the lower side. A film receiving device arranged in the vertical direction is provided, and a cutter is provided between the end portion of the film feeding device and the film receiving device, and is provided with upper and lower support rollers and reciprocates in the horizontal direction. A cutting device for raw film in a bag making machine.