JPH0713996Y2 - Cutlery roll for bag making machine - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a blade roll in an automatic bag making machine for continuously producing envelopes, paper bags and the like from continuous raw paper made of roll paper.

[0002]

2. Description of the Related Art Conventionally, in an automatic bag making machine for manufacturing envelopes and paper bags from a strip-shaped continuous base paper drawn from a roll paper, a die is cut into the continuous base paper on the left and right outer peripheral surfaces of one roll. Then, a blade was attached, and by rotating the roll, notches (edge trimming) were formed on both sides of the continuous base paper simultaneously on the left and right sides. Examples of these methods and apparatuses include Japanese Examined Patent Publication No. 52-11255 and Japanese Utility Model No. 53.
There are patents and inventions as described in Japanese Patent Publication No. 7927.

[0003]

In the blade roll of the above-mentioned apparatus, the blades for cutting the continuous base paper are attached symmetrically to the left and right of the outer peripheral surface of one roll.
The distance to both ends of the left and right cutters along the axial direction of the roll is extremely long, so even if the roll shaft is slightly inclined, the height of the left and right cutters with respect to the horizontal plane is different, When adjusting the mounting position of the left and right blades and the mounting position of the blade roll so that the same pressing force is applied equally to the left and right, and when replacing due to wear, etc.
As mentioned above, it is difficult to adjust the attachment, and not only requires a considerable amount of skill, but even with strict adjustment, the distance between the left and right blades is long. The parallelism is difficult to obtain, and the left and right knives are not always worn in the same way.In such a case, it is extremely difficult to replace only one side for accuracy and adjustment, and it is customary to replace both left and right simultaneously. Therefore, there is a problem that the cost of the expensive cutting tool is short and the cost of the cutting tool is high.

Therefore, the inventor of the present invention puts the left and right blades into separate rolls and attaches them to each other to facilitate the centering adjustment of the blades and prolong the life of the blades.
A bag-making blade roll as shown in 4950 publication was devised. However, this is a tool roll for exclusive use of the left and right, with an interval in the circumferential direction of one anvil roll, and the timing is adjusted so that those left and right cutters cut the position where the left and right sides of the base paper face each other. Since it is installed so as to rotate in contact with the anvil roll at the same peripheral speed, the positioning arrangement and attachment for holding the left and right knives on the circumferential surface of the anvil roll that affect the length of the manufacturing bag are In addition, in the first set of continuous stencil paper, the leading end of the stencil paper must be bent and passed between the anvil roll and the blade roll, so that the stencil paper is difficult to pass through and auxiliary work is required, which is troublesome. Further, as the bag length becomes larger, the anvil roll needs to be made larger.

[0005]

The present invention has been made in view of the above points. The purpose of the present invention is to easily adjust the left and right blades and to replace them individually. An object of the present invention is to provide a blade roll for a bag-making machine, which has a good blade holding property, and at the same time, allows a continuous base paper drawn from a roll paper to be easily passed between the rolls, which is easy to assemble and work. In order to achieve the above-mentioned object, the present invention provides a left and right dedicated tool rolls in which left and right cutters, which are notched on both side edges of a continuous base paper at regular intervals, are attached to separate rolls so as to project from the roll circumferential surface, These left and right exclusive blade rolls are formed with several ventilation holes that switch the intake and intake functions through the air supply holes and intake holes depending on the rotational position inside the blade, and these left and right exclusive blade rolls are In order to cut the left and right positions of the continuous base paper, which are opposed to each other separately, in contact with the respective anvil rolls, they were placed side by side on the same plane so as to rotate at the same peripheral speed at the same timing. It is a thing.

[0006]

According to the present invention, the strip-shaped continuous base paper drawn from the coiled roll paper transferred in the automatic bag making machine is arranged as a pair and is rotated in the arrow direction. And the left side (or right side) of the outer peripheral surface of the roll and a blade roll with a special blade type blade attached, and then the anvil roll and the right side (or left side) of the outer peripheral surface of another roll of the special blade shape. It is easily and linearly passed between the blade roll with the blade attached, and by the rotation of the blade and the anvil roll of the pair of blade rolls, a constant interval on the left side (or right side) of the continuous base paper, that is, a bag to be manufactured. A notch A is formed at a length interval to fit the blade shape, and then a bag length interval is provided on the right side (or left side) of the continuous base paper by a pair of anvil roll and the blade of the blade roll to form the cutout. Part A and The notches B are sequentially formed at the positions facing each other on the right and left, respectively, and the continuous base paper 9 is formed into a continuous bag-shaped paper C in which the notches A and B are formed at regular intervals on the left and right sides to perform automatic bag making. It is transferred to a machine and made into bags.

[0007]

EXAMPLES Examples will be described with reference to the drawings.
1 to 4, left and right outer peripheral surfaces of two rolls 1 and 2 whose circumferences are bag lengths of envelopes, paper bags, etc. to be manufactured, and mountain-shaped portions are formed so as to project from the outer peripheral surfaces. Subsequently, the blades 3 and 4 having blade shapes opened in parallel or in a V shape are placed on one side of the separate rolls 1 and 2, with their chevrons directed inward, with a predetermined blade interval, and several blades are provided. Left with the mounting bolt 22
The blade rolls 5 and 6 mounted separately on the right side are constituted. These blade rolls 5 and 6 are provided so as to rotate in contact with the anvil rolls 7 and 8, respectively.
And the left side (or right side) of the tool 3 and 6 and the right side (or left side)
The blade 4 and the blade 4 are spaced in the manufacturing bag length direction in the direction of movement of the base paper, and the left and right opposing positions on both sides of the advancing strip-shaped continuous base paper are aligned to the left and right separately so that the cutting action is performed separately. It is mounted on the machine frame 12 so as to rotate in contact with the anvil rolls 7 and 8 in the opposite direction. 9 is a strip-shaped continuous base paper.

The two blade rolls 5 and 6 are installed on the same plane, and the blade rolls 5 and 6 are mutually phased by appropriately shifting the working positions of the blades 3 and 4 within 360 degrees. By doing so, for example, if it is shifted by 180 degrees, the interval between the two blade rolls can be arranged at a distance interval of 1/2 of the bag length, and the maximum can be set as the bag length interval at any small interval. It is possible to reduce the space of the die cutting device, and since it is on the same plane, it is easy to adjust the position of the cutting tool that divides the left and right opposing positions of the base paper and cuts separately left and right. .

The blade rolls 5 and 6 are provided with a plurality of vent holes 10 penetrating the blades 3 and 4 mounted on one side thereof, respectively, and an air supply hole / intake hole 11 communicating with the vent holes 10. A passage 14 is provided in the center of the inside, and both ends of the air supply hole / intake hole 11 are perforated so as to open to the side ends through the radial direction of the flange portions 13, 13 provided at both end portions of the blade rolls 5, 6. And 15 through the arc-shaped intake passages 18 and the arc-shaped air supply passages 19 of the fixed wheels 16 and 17 fitted so as not to rotate on both sides of the blade rolls 5 and 6, respectively, as the rotation of the blades is changed. To communicate with each other.

Further, an intake pipe connecting port 20 for connecting a vacuum pump (not shown) to an arc-shaped intake passage 18 of a fixed wheel 16 provided on each side of each of the blade rolls 5 and 6, and an arc-shaped air supply passage 19 are provided. Are provided with air feed pipe connection ports 21 respectively, and while the blades 3 and 4 of the blade rolls 5 and 6 are in contact and rotating before coming into contact with the outer peripheral surface of the anvil roll, the insides of the blades 3 and 4 are sucked to suck the paper surface. , By switching to a predetermined position apart from the anvil rolls 7 and 8, the continuous base paper 9 is sandwiched between the anvil rolls 7 and 8 in a suction-closed state at the tips of the blades 3 and 4. The cut paper pieces can be reliably and easily cut, and the cut paper pieces rotate while adsorbing and can be discharged at a predetermined position where a suction dust collector (not shown) is provided by switching to the air supply, so the cut paper pieces are mixed. fear Ku tends to dust collection in one place. 23
Is the anvil roll 7,
8 is a blade roll bearing movement adjusting device for advancing and retracting the blade rolls 5 and 6 with respect to the axial centers of the anvil rolls 7 and 8, respectively, because they are in close contact with the outer peripheral surface of the blade rolls 8.

[0011]

EFFECTS OF THE INVENTION Conventionally, a cutting tool for cutting a continuous base paper in an automatic bag making machine for envelopes, paper bags, etc. has been symmetrically attached to the left and right of one roll, but to the left of two rolls. Left and right dedicated blade rolls with separate blades attached to the right, and a pair of blades that individually rotate in contact with the anvil roll, and are arranged on the same plane at intervals in the direction of travel of the base paper. , Rolled paper for bag making compared to conventional blade rolls for bag making machines, in which the blade roll divided to the right is placed so as to contact the outer circumference of one large-diameter anvil roll to rotate and roll the base paper. The strip-shaped continuous base paper drawn out from the machine is very easy to pass between the blade roll and the anvil roll, the base paper can be set easily and easily, and it does not take time, so the workability can be significantly improved and the blade roll Since the blade length in the axial direction is short, and the blade rolls dedicated to the left and right are installed on the same plane, it is more preferable to install them at intervals on the circumference of the conventional one anvil roll. It is easy to perform centering of the blade roll mounting and mounting of the blade, and to adjust the timing of the two blades that separate the left and right opposite positions of the base paper and cut separately left and right, and improve the cutting accuracy. There is an effect that uneven wear of the blade can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a blade roll for a bag making machine according to the present invention, in which a part of the blade roll is disassembled and shown.

FIG. 2 is a sectional view of the two blade rolls of the present invention when in use.

FIG. 3 is a plan view showing another embodiment in which the blade roll is installed by converting the blade roll back and forth from the case of FIG.

FIG. 4 is a sectional view of one blade roll according to the present invention.

[Explanation of symbols]

1, 2 ...... Roll body 3,4 …… Blade 5,6 …… Blade roll 7,8 …… Anvil roll 9 …… Strip-shaped continuous base paper 10 …… Vent hole 11 …… Air supply hole and air intake hole

Claims (1)

[Scope of utility model registration request] 1. A left and right dedicated knife roll in which left and right cutters cut out on both sides of a continuous base paper are separately attached to the outer circumferences of separate rolls, and the left and right dedicated knife rolls are provided with the cutters. The inside is formed with a ventilation hole that switches between intake and air supply through the air supply hole and the intake hole depending on the rotational position.The left dedicated blade roll and the right dedicated blade roll are paired with the individual anvil rolls to the left and right of the continuous base paper. A blade roll for a bag-making machine, which is installed on the same plane at intervals in the advancing direction of the base paper so as to rotate at the same peripheral speed at the same timing so as to cut the opposite positions left and right separately.