JP4071344B2 - Paper container manufacturing method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a paper container that is punched from a paper material in a developed state and then bent into a box shape and filled with drinks such as milk and juice.
[0002]
[Prior art]
A paper container filled with drinks such as milk and juice is formed into a box shape by punching a paper material to form an unfolded carton blank, and then folding and joining the carton blank.
[0003]
When forming a carton blank in an unfolded state, it is processed by punching a roll-shaped paper material or a sheet-shaped paper material with a so-called flat die, or by cutting an outer peripheral portion with a so-called rotary die cutter. . For this reason, a flat die for each shape of the carton blank to be punched and a dedicated cutter segment for cutting the outer peripheral portion into the shape of the carton blank are used.
[0004]
Moreover, the formation process of such a carton blank is continuously performed in the printing process within the printing apparatus which prints the required display regarding a pattern and the content on the surface of a carton blank. And the carton blanks carried out from the inside of the apparatus are bent into a box shape, and necessary parts are welded together, and after being filled with contents such as milk and juice, they are sealed.
[0005]
[Problems to be solved by the invention]
In the paper container manufacturing method described above, in order to change the shape of the carton blanks in order to change a part of the outer peripheral shape of the paper container, it is necessary to replace the flat die and the cutter segment with another one.
[0006]
However, if you want to change the outer peripheral part of the carton blanks partially, if you change the flat die or cutter segment to a different one, it will take a lot of time to change and adjustment at the time of replacement, so production starts. The rate is greatly reduced and the manufacturing cost is high.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the invention of claim 1 is a method for manufacturing a paper container in which a paper material is punched to form a developed carton blank, and then the carton blank is folded and joined to manufacture a paper container. The plurality of carton blanks are stacked, stacked, aligned, and then subjected to additional processing on the outer peripheral portion of the stacked carton blanks.
[0008]
In this paper container manufacturing method, after forming carton blanks, a plurality of carton blanks are stacked, stacked, aligned, and subjected to additional processing on the outer peripheral portion. Therefore, even when it is desired to partially change the outer peripheral portion of the carton blank, it is possible to change the outer peripheral portion partially by simply performing additional processing after stacking, stacking, and aligning a plurality of carton blanks. As a result, it is not necessary to change the flat die or the cutter segment for punching the carton blanks. As a result, the outer peripheral shape of the carton blank can be partially changed easily without taking time and labor.
[0009]
The plurality of carton blanks that are stacked and loaded are transferred by a transfer means onto an alignment conveying belt that aligns the plurality of carton blanks.
[0010]
In this paper container manufacturing method, a plurality of carton blanks once punched and formed into a predetermined shape are collected, and in a stacked state, transferred onto an alignment transport belt by a transfer means and aligned. Then, after aligning the plurality of carton blanks, the outer peripheral shape of the carton blanks is partially added.
[0011]
Further, the transfer means is disposed between the plurality of alignment conveyor belts, and after the plurality of carton blanks are placed, the plurality of carton blanks are lowered and placed on the alignment conveyor belt. It is characterized by comprising a single loading block and a robot arm for transferring a plurality of stacked and loaded carton blanks onto the plurality of loading blocks.
[0012]
In this paper container manufacturing method, a plurality of carton blanks once punched and formed into a predetermined shape are collected and loaded onto a loading block by a robot arm. Next, the stacking block on which the plurality of carton blanks are transferred is lowered, so that the plurality of carton blanks are placed on the alignment conveyor belt.
[0013]
A second aspect of the present invention is the method for manufacturing a paper container according to the first aspect , wherein a plurality of sheets are arranged on an alignment plate on which one side of a plurality of carton blanks conveyed by the alignment conveying belt contacts and slides. It is characterized by aligning one side of carton blanks.
[0014]
In this paper container manufacturing method, a plurality of carton blanks placed on the alignment transport belt are brought into contact with and slide on one side of the carton blanks while being transported, so that one side of the carton blanks is aligned. .
[0015]
The invention of claim 3 is the invention of claim 1 or claim 2 , wherein the additional processing can display information on the contents formed in the outer peripheral portion of the carton blanks and filled in the paper container. It is characterized by an arc-shaped notch.
[0016]
In this paper container manufacturing method, arc-shaped notches are formed in the outer peripheral portions of the plurality of aligned carton blanks by additional processing. In this case, the outer peripheral shape of the carton blank can be partially changed without exchanging the flat die or the cutter segment forming the carton blank.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a method for manufacturing a paper container according to the present invention will be described. FIG. 1 shows a finished paper container 1 and FIG. 2 is an enlarged view of a part of the paper container 1. 3 to 6 show a procedure for forming the unfolded carton blanks 6 from one sheet of paper material 7.
[0018]
As shown in FIG. 1, the paper container 1 of this embodiment is a box-shaped milk pack etc. which were filled with milk etc., for example, and consists of the bottom face part 2, the side part 3, and the container top part 4. As shown in FIG. As shown in FIG. 2, an arcuate notch 5 formed by additional processing is formed in the container top portion 4.
[0019]
Next, the manufacturing method of the paper container 1 which forms the paper container 1, and the transfer means used for this manufacturing method are demonstrated.
[0020]
As shown in FIG. 3, the sheet-like paper material 7 is punched to form the unfolded carton blanks 6. This punching process is performed in a printing apparatus (not shown) that prints a pattern on the side surface portion 3. By this punching process, as shown in FIG. 4, unnecessary portions 8 and unfolded carton blanks 6 are punched from the paper material 7 and a fold line 9 is formed. The carton blanks 6 include four bottom surfaces 2a, 2b, 2c and 2d for forming the bottom surface portion 2, four side surfaces 3a, 3b, 3c and 3d for forming the side surface portion 3, and a container top portion 4 Are formed by four upper surfaces 4a, 4b, 4c, and 4d, and a side margin 3a, a bottom surface 2a, and an adhesive margin portion 10 provided continuously on the upper surface 4a. At this time, the arc-shaped notch 5 is not formed in the container top portion 4.
[0021]
A plurality of the carton blanks 6 formed in this way are stacked and stacked as shown in FIG. A plurality of stacked carton blanks (hereinafter referred to as “product blocks”) 11 are stacked in a block shape and placed on the blocks 12 and 13 as shown in FIG. In this state, the carton blanks 6 are not aligned, and the outer peripheral portions of the carton blanks 6 are not aligned. The product block 11 in this state is transferred by the transfer means 14 onto the plurality of alignment transport belts 15a, 15b, 15c, and 15d.
[0022]
As shown in FIG. 7, the transfer means 14 is arranged between the four conveying belts 15a, 15b, 15c, 15d for alignment and descends after the product block 11 (a plurality of carton blanks 6) is placed. Nine loading blocks 16a, 16b,... 16i for placing the product block 11 on the alignment conveyor belts 15a, 15b, 15c, 15d, and the nine loading blocks 16a, 16b,. -It consists of the robot arm 17 transferred on 16i.
[0023]
Then, as shown in FIG. 6, a product block 11 consisting of a plurality of carton blanks 6 stacked and loaded on the blocks 12 and 13 is converted into two forks 17a of the robot arm 17 as shown in FIG. , 17b, and moved onto the alignment transport belts 15a to 15d, and then placed on the stacking blocks 16a to 16i rising from the alignment transport belts 15a to 15d as shown in FIG. The loading blocks 16a to 16i on which the product block 11 is placed are lowered to place the product block 11 on the alignment conveyor belts 15a to 15d.
[0024]
As shown in FIGS. 9A and 9B, the alignment plate 18 is disposed on the alignment conveying belts 15a to 15d along the conveying direction of the alignment conveying belts 15a to 15d. When one side of the product block 11 conveyed by the belts 15a to 15d abuts and slides, one side of the plurality of carton blanks 6 is aligned and aligned. In this case, the plurality of stacked carton blanks 6 are pressed against the alignment plate 18 side by a pressing plate (not shown) while being transported, and further pressed to one side in the transport direction to be aligned.
[0025]
After the plurality of carton blanks 6 are aligned, additional processing is performed on the outer peripheral portion of the plurality of carton blanks 6 loaded until the next carton blanks 6 are conveyed to the feeder 19 in the next process. In this additional processing, arc-shaped notches 5 and 5 are formed on the upper surfaces 4b and 4d forming the container top portion 4. As shown in FIGS. 1 and 2, these notches 5 and 5 are joined to form one notch when the container top portion is sealed.
[0026]
In order to form the notches 5 and 5 by additional processing on the outer periphery of the plurality of carton blanks 6 (in this case, the container top portion 4), the container top portion 4 of the plurality of carton blanks 6 as the product block 11 is formed. This is done by cutting off the side edge portion of the blade with a rotating blade such as a circular cutter or a punch.
[0027]
In addition, the arc-shaped notches 5 and 5 touch or visually recognize information on the contents filled in the paper container 1, for example, information on whether the contents are milk or juice. Can be displayed. Moreover, various information can be displayed by changing the shape, quantity, etc. of the notch 5.
[0028]
According to the paper container manufacturing method of this embodiment, even if it is desired to partially change the outer peripheral portion once formed on the carton blanks 6, a plurality of carton blanks 6 are added together after being stacked, stacked and aligned. This can be done by processing. Accordingly, there is no need to change the flat die and the cutter segment for forming the carton blanks 6, so it is possible to change the outer peripheral shape of the carton blanks 6 partly easily without changing the time and time for adjusting them. can do. In addition, an increase in manufacturing cost can be prevented.
[0029]
Further, in the paper container manufacturing method of the present embodiment, when it is desired to partially change the outer periphery of the paper container, the processing can be performed for different types of products because the processing is not performed in the printing apparatus.
[0030]
Further, it is possible to easily select the specification of the outer peripheral shape.
[0031]
Furthermore, in the paper container manufacturing method of the present embodiment, the shape specification required immediately before the next step, that is, the step of filling the contents such as milk and sealing the container top portion is selected and processed. It becomes possible.
[0032]
【The invention's effect】
As described above, according to the invention of claim 1, even when it is desired to partially change the outer peripheral portion of the carton blanks, only a plurality of carton blanks are stacked, stacked, aligned, and further processed. Since the outer peripheral portion can be partially changed, it is not necessary to change the flat die or the cutter segment for punching the carton blanks. As a result, the outer peripheral shape of the carton blank can be partially changed easily without taking time and labor. Thereby, the manufacturing cost can be reduced.
[0033]
In addition, after aligning multiple carton blanks, the outer shape of the carton blanks can be partially processed further, so when changing the outer periphery of the paper container, the flat die or cutter segment can be replaced. It is no longer necessary to perform the operation, and the outer peripheral shape of the carton blanks can be partially changed easily.
[0034]
Then, a plurality of carton blanks , once punched and molded into a predetermined shape, are collected and loaded onto the loading block by a robot arm, and the loading block is lowered to lower the plurality of carton blanks. Is placed on the alignment conveyor belt, and after being stacked and stacked, it can be automatically placed on the alignment conveyor belt and easily aligned.
[0035]
According to the invention of claim 2 , the plurality of carton blanks placed on the alignment transport belt are brought into contact with and slide on one side of the carton blanks while being transported. It can be automatically and easily aligned.
[0036]
According to invention of Claim 3, since the arc-shaped notch is formed by the additional process in the outer peripheral part of the arranged plurality of carton blanks, the carton can be replaced without replacing the flat die or the cutter segment forming the carton blanks. The outer peripheral shape of the blanks can be easily changed partially.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a paper container.
FIG. 2 is an enlarged perspective view showing a container top of the paper container of FIG.
FIG. 3 is a plan view showing a process of punching carton blanks from a paper material.
FIG. 4 is a plan view showing a carton blank.
FIG. 5 is a perspective view showing a state in which a plurality of carton blanks are stacked and loaded.
FIG. 6 is a side view showing a state in which a plurality of carton blanks are stacked and a stacked product block is placed on the block.
FIG. 7 is a plan view showing a state in which the product block is placed on the alignment conveyor belt by the transfer means.
FIG. 8 is a side view showing a state where product blocks are placed on the alignment conveyor belt by the transfer means.
9A and 9B show product blocks on the alignment conveyor belt, wherein FIG. 9A is a plan view and FIG. 9B is a side view.
[Explanation of symbols]
1 Paper container 4 Container top part 5 Notch 6 Carton blanks 7 Paper material

Claims (3)

  A method of manufacturing a paper container by punching a paper material to form an unfolded carton blank, and then folding and joining the carton blank to manufacture a paper container, wherein a plurality of the carton blanks are collected and loaded. After the plurality of carton blanks are transferred and aligned by the transfer means on the conveying belt for aligning the plurality of carton blanks, additional processing is performed on the outer peripheral portion of the stacked carton blanks. In practice, the transfer means is disposed between the plurality of alignment conveyor belts, and after the plurality of carton blanks are placed, descends to place the plurality of carton blanks on the alignment conveyor belt. A robot arm for transferring a plurality of loading blocks and a plurality of stacked and loaded carton blanks onto the plurality of loading blocks. Method of manufacturing a paper container which is characterized in that it consists of. 2. The method for manufacturing a paper container according to claim 1, wherein one side of the plurality of carton blanks is arranged on an alignment plate on which one side of the plurality of carton blanks conveyed by the conveying belt for alignment contacts and slides. A method for producing a paper container, characterized by being aligned. The paper container manufacturing method according to claim 1 or 2, wherein the additional processing is arcuate in which information of contents formed in an outer peripheral portion of the carton blanks and filled in the paper container can be displayed. A method for producing a paper container, characterized by being a notch.

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