JPH0254219B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention mainly relates to a method and apparatus for making a double bag for laminating inner bag base paper and outer bag base paper of a double bag for fruit. It is.

[Prior art] In this type of paper, the base paper for outer bags is sent forward one by one by a feeding device, and after the leading end of the base paper for outer bags is stopped by a stopper, the base paper for outer bags is further transferred. Drop the base paper for the inner bag one by one from above into the slack created by this, and after positioning it approximately on the center line of the base paper for the outer bag, roll it deeply downward to separate the base paper for the inner bag and the base paper for the outer bag. Patent Publication No. 1973 by the same applicant and inventor
A bag making method and an apparatus therefor have been proposed in Japanese Patent No. 38990.

[Problem to be solved by the invention] In the conventional technology, the inner bag and the outer bag are not glued together.
Therefore, even if the outer bag is opened during use, the inner bag does not open, making it difficult to operate.

It is an object of the present invention to provide a method and apparatus for making double bags that solves these problems.

[Means for Solving the Problems] The present invention provides for feeding base paper for outer bags in an unfolded state stored in a storage frame one by one onto a pair of left and right laminating rollers using a feeding device, so that the leading edge of the base paper for outer bags is is stopped by a stopper to form a slack part between the pair of laminating rollers in the base paper for outer bags, and the inner bags are fed one by one from above into the slack part to remove the slack part of the base paper for outer bags. In the double bag bag making method, the outer bag base paper is folded in half by being dropped into the outer bag base paper and then rolled deeply downward by the laminating roller, and the inner bag is provided within the outer bag base paper. Glue is applied to the outer surface of the inner bag while feeding the inner bag onto the slack portion, and the inner bag is fed to the slack portion of the outer bag base paper at the same speed as the circumferential speed of the laminating roller. Bags are made by gluing the outer surface of the inner bag and the inner surface of the outer bag with glue, and there is also a pair of upper pull rollers on the left and right that pass the cylindrical base paper for the inner bag from above, and a pair of upper pull rollers below the upper pull rollers. A cutter roller is provided on the inner bag and has a cutter roller horizontally disposed on its circumferential surface that can contact the inner bag base paper, and the inner bag base paper is cut by the cutter roller which is installed below the cutter roller. The inner bag has a pair of left and right lower pulling rollers through which the inner bag passes from above, and a gluing protrusion provided below the cutter roller and capable of contacting both outer surfaces of the inner bag on its peripheral surface. A pair of left and right gluing rollers that pass through, a pair of left and right gluing rollers that are provided on both outer sides of the gluing rollers and that the gluing protrusions can contact and that are partially immersed in the glue storage section; A pair of left and right lower pulling rollers provided on both sides in the axial direction of the rollers, through which the inner bag passes, and a pair of left and right cams provided below the lower pulling rollers and having protrusions on their circumferential surfaces with which the inner bag can come into contact. a storage frame provided on one side below the cam roller for storing the unfolded outer bag base paper; and a cross-feeding roller provided at the bottom opening of the storage frame for horizontally feeding the outer bag base paper. , a stopper provided in the feeding direction of the lateral feeding roller and to which the tip of the base paper for outer bag is locked, and a pair of left and right laminating rollers provided at the intersection of the lower part of the cam roller and the feeding direction of the lateral feeding roller. It is equipped with the following.

[Function] An inner bag with adhesive provided on the outer surface can be integrally bonded to the base paper for the outer bag which has been valley-folded by a bonding roller.

[Example] Next, an example of the present invention will be described based on the accompanying drawings.

Reference numeral 1 designates a storage frame for outer bag base paper a with an open bottom 1a, and a lateral feed roller 2 serving as a feeding device for sequentially feeding sheets one by one in the lateral direction is provided in the bottom opening 1a. Note that 2a is a friction body provided on the cross-feed roller 2, and 3 is a cross-feed roller for guiding to smoothly feed out the outer bag base paper a fed out by the friction body 2a.

Reference numerals 4 and 5 denote a pair of left and right laminating rollers that rotate in opposite directions, and these laminating rollers 4 and 5 are arranged at the intersection of the feeding direction of the lateral feed roller 2 and the lower side of a cam roller to be described later. A guide roller 4a that is folded into the laminating roller 4 is provided on the upper part of one of the laminating rollers 4, and a guide plate 6 and the guide are provided on the side of the other laminating roller 5. A feed roll belt 6a is provided above the plate 6 in parallel with the guide plate 6.

Reference numeral 7 denotes a stopper installed horizontally on the guide plate 6 for stopping the leading end of the outer bag base paper a.

Above the contact surfaces 8 of the pair of left and right laminating rollers 4 and 5, the following items are sequentially provided from the top stage toward the contact surfaces 8.

A series of inner bag base paper rolls b are pasted with glue f on their edges by a gluing roller 9, and the inner bag base paper c, which is formed into a cylindrical shape by a guide plate 10 narrower than the width of the inner bag base paper c, passes from above. A pair of left and right upper pull rollers 11a and 11b are pivotally supported on the uppermost stage of the frame 17. The upper pulling rollers 11a, 11
A cutter roller 12 for cutting the inner bag base paper c to approximately 1/2 the length of the outer bag base paper a is provided at the lower stage of b, and the cutter roller 12 has blades on its circumferential surface. The section 12b is installed horizontally. 12a is a receiving portion provided opposite to the cutter roller 12. At the lower stage of the cutter roller 12, a pair of left and right lower pulling rollers 13a and 13b are supported respectively on both sides in the axial direction of a pair of left and right gluing rollers 14.

The lower pull rollers 13a, 13b have a larger diameter than the gluing roller 14, and a gluing protrusion 14a having the same diameter as the lower pull rollers 13a, 13b is provided on the axial center side of the lower pull rollers 13a, 13b. Formed gluing roller 1
4 are provided at the same rotation center so as to be freely rotatable by a central shaft 13c. In addition, 15 is glue d on the protrusion 14a.
15a is the glue supply roller for adhering the
This is a tray serving as a glue storage section, and is provided on both outer sides of the glue supply roller 15, and a part of the circumferential surface of the glue supply roller 15 is immersed in the glue d. Furthermore, a pair of left and right cam rollers 16a, 16b are provided at the lower stage of the lower pulling rollers 13a, 13b. A protrusion 16c is provided on the circumferential surface of the cam rollers 16a, 16b.

Incidentally, the circumferential speed V ₁₁ of the upper pulling rollers 11a, 11b and the circumferential speed V 13 of the lower pulling rollers 13a, _13b are the same V ₁₁ =V ₁₃ or approximately the same speed.
It is provided by a transmission device such as a timing belt or chain. Similarly, cam rollers 16a, 1
The circumferential speed V ₁₆ of the protrusion 16c of 6b and the circumferential speed V ₄ of the bonding rollers 4 and 5 are the same V ₁₆ =V ₄ or substantially the same.

Further, the rotation speed N ₁₂ of the cutter roller 12 and the rotation speed N ₁₄ of the gluing roller 14 are set to be the same N ₁₂ =N ₁₄ or substantially the same. Cam roller 16a, 1
The circumferential speed of the protrusion 16c of 6b is the upper pull roller 1
1a and 11b, and has the same circumferential speed as the laminating rollers 4 and 5.

Thus, the outer bag base paper a is sent out sheet by sheet by the transverse speed roller 2, and the leading end is stopped by the stopper 7 and positioned on the laminating rollers 4 and 5. 5. A slack portion x is formed above the gap.

The inner bag base paper c is pulled out from the base paper roll b by upper pull rollers 11a and 11b, its edges are glued by a gluing roller 9, and formed into a cylindrical shape by a guide plate 10. Then cutter roller 12
The outer bag base paper a is cut into pieces of 1/2 or less length. The inner bag e formed by cutting the cylindrical outer bag base paper a is pulled by a lower pulling roller 1.
It is guided downward by 3a and 13b.

At this time, since the peripheral speeds of the upper pulling rollers 11a, 11b and the lower pulling rollers 13a, 13b are the same, V ₁₁ =V ₁₃ , the inner bag base paper c will not tear.

Furthermore, since the number of rotations of the cutter roller 12 and the number of rotations of the gluing roller 14 are the same, N ₁₂ =N ₁₄ , the glue is applied to each inner bag e at a fixed position on both outer surfaces. That is, as the gluing roller 14 rotates, the gluing protrusion 14a is fed through the gluing roller 15 partially immersed in the tray 15a.
After the glue f is supplied to the inner bag e, the protrusions 14a come into contact with both outer surfaces of the inner bag e and adhere the glue f to both outer surfaces of the inner bag e.

After the lower pulling rollers 13a, 13b, the protrusions 16c of the cam rollers 16a, 16b guide the outer bag base paper a to the slack part x formed in the center of the laminating rollers 4, 5. , the inner bag e is dropped into the slack part x.
Therefore, the inner bag e is sandwiched between the outer bag base paper a by the laminating rollers 4 and 5, and
The outer bag base paper a is folded in half in a valley-fold shape, and both outer surfaces of the inner bag e and both inner surfaces of the outer bag base paper a are glued together by the glue f adhering to the inner bag e.

In this case, the circumferential speed of the cam rollers 16a, 16b and the circumferential speed of the laminating rollers 4, 5 are the same V ₁₆
= V ₄ , so the inner pouch e will not be torn.

As mentioned above, in the bag-making method and device of Japanese Patent Publication No. 53-38990, which was previously proposed by the same applicant, the base paper for the inner bag is put into the base paper for the outer bag on the laminating roller. Therefore, since the inner bag and the outer bag are not glued together, there is a problem that the inner bag may come off from the outer bag when used. However, in the above embodiment, the cutter roller 12
Since a gluing roller 14 is provided at the lower stage of the bag, the inner bag e is pasted with glue on both outer surfaces of the inner bag e during bag making, and is adhered to the outer bag base paper a by the laminating rollers 4 and 5 to be integrated. Therefore, it is possible to mass-produce double-layered bags in which the inner bag e and the outer bag base paper a are glued together.

In addition, in the case of Japanese Patent Publication No. 53-38990, since the cylindrical base paper for the inner bag was put into the base paper for the outer bag on the laminating roller, the bottom of the outer bag and the bottom of the inner bag were Although they did not overlap, in the embodiment described above, cam rollers 16a and 16b were provided at the lower stage of the lower pulling rollers 13a and 13b, and the cam rollers 16a and 16b moved the outer bag base paper on the laminating rollers 4 and 5. Place the inner bag e into the designated position of a.
can be positioned reliably. Therefore, the inner bag e is glued to a predetermined location on the outer bag base paper a, and the outer bag base paper a and the inner bag e are adhered to each other by the glue d without moving, thereby providing an excellent double bag.

Further, the circumferential speed of the upper pulling rollers 11a, 11b and the circumferential speed of the lower pulling rollers 13a, 13b are set to be the same V ₁₁ =V ₁₃ , and the cam rollers 16a, 16
The peripheral speed V ₁₆ of b and the peripheral speed V ₄ of the laminating rollers 4 and 5 are the same speed V ₁₆ = V ₄ and cutter roller 1
2 rotation speed N ₁₂ and the rotation speed of the gluing roller 14
By setting N ₁₄ to the same value N ₁₂ =N ₁₄ , the inner bag base paper c and the inner bag e can be manufactured continuously without tearing in the middle. It should be noted that the present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the gist of the present invention.

[Effects of the Invention] According to the present invention, the unfolded base paper for outer bags stored in a storage frame is sent one by one onto a pair of left and right laminating rollers by a feeding device, and the leading edge of the base paper for outer bags is stopped by a stopper. Then, a slack part was formed between the pair of laminating rollers in the base paper for outer bags, and the inner bags were fed into the slack part one by one from above and dropped onto the slack part of the base paper for outer bags. After that, the outer bag base paper is folded in half by being deeply rolled downward by the laminating roller, and the inner bag is provided inside the outer bag base paper. Gluing is applied to the outer surface of the inner bag while it is being fed onto the slack portion, and the inner bag is sent to the slack portion of the outer bag base paper at the same speed as the circumferential speed of the laminating roller, so that the inner bag is sealed with the glue. The outer surface of the bag is glued to the inner surface of the outer bag to make a bag, and since the inner bag is glued, it is possible to make a double bag in which the outer bag and inner bag are glued and integrated.

The present invention includes a pair of left and right upper pulling rollers through which the cylindrical base paper for inner bags is passed from above, and a blade section provided below the upper rollers and capable of contacting the base paper for inner bags. a pair of left and right lower pulling rollers provided below the cutter roller through which the inner bag made of the inner bag base paper cut by the cutter roller passes from above; A pair of left and right gluing rollers, which are provided below and have gluing protrusions on their circumferential surfaces that are capable of contacting both outer surfaces of the inner bag, through which the inner bag passes from above, and a pair of gluing rollers provided on both outer sides of the gluing rollers. A pair of left and right glue supply rollers that the glue protrusion can contact and are partially immersed in the glue storage portion; and a pair of left and right lower pullers provided on both sides of the glue roller in the axial direction and through which the inner bag passes. a pair of left and right cam rollers provided below the lower pull roller and having protrusions on their circumferential surfaces with which the inner bag can come in contact; and a pair of left and right cam rollers provided below the cam rollers on one side for the outer bag in the unfolded state. A storage frame for storing base paper, a cross-feeding roller provided at the bottom opening of the storage frame for horizontally feeding the outer bag base paper, and a cross-feeding roller provided in the feeding direction of the cross-feeding roller so that the tip of the outer bag base paper engages. A stopper that stops the
It is equipped with a pair of left and right lamination rollers provided below the cam roller and at the intersection of the feed direction of the lateral feed roller, and can be made into a bag by sequentially applying glue to the inner bag and integrating it with the outer bag. .

[Brief explanation of the drawing]

The drawings show one embodiment of the invention, and the first
The figure is a longitudinal sectional view of the whole, and FIG. 2 is a sectional view of the gluing roller. 1... Storage frame, 1a... Bottom opening, 2, 3...
Transverse feed roller (feeding device), 4, 5...Lamination roller, 7...Stopper, 11a, 11b
...Upper pull roller, 12...Cutter roller, 12b...Blade portion, 13a, 13b...Lower pull roller, 14...Gluing roller, 14a
...Protrusion, 15... Glue supply roller, 15a...
...Tray (glue storage section), 16a, 16b...Cam roller, 16c...Protrusion, x...Sag part.

Claims (1)

[Scope of Claims] 1. The base paper for outer bags in the unfolded state stored in the storage frame is fed one by one onto a pair of left and right laminating rollers by a feeding device, and the leading edge of the base paper for outer bags is stopped by a stopper. After forming a slack part between the pair of laminating rollers in the base paper for outer bags, and feeding the inner bags one by one into the slack part from above and dropping them onto the slack part of the base paper for outer bags, In the double bag bag making method, the outer bag base paper is folded in half by being deeply rolled downward by the laminating roller, and the inner bag is provided within the outer bag base paper, wherein the inner bag is folded into the inner bag by the slack. Gluing is applied to the outer surface of the inner bag while the inner bag is being sent to the section, and the inner bag is sent to the slack part of the outer bag base paper at the same speed as the circumferential speed of the laminating roller, so that the outer surface of the inner bag is glued with the glue. A method for making double bags, which is characterized in that bags are made by bonding the inner surface of an outer bag. 2. A pair of left and right upper pulling rollers through which the cylindrical inner bag base paper is passed from above, and a cutter having a blade section horizontally disposed on the circumference that is provided below the upper pull rollers and can contact the inner bag base paper. a pair of left and right lower pulling rollers provided below the cutter roller through which the inner bag made of the inner bag paper cut by the cutter roller passes from above; a pair of left and right gluing rollers that have gluing protrusions on their peripheral surfaces that are capable of contacting both outer surfaces of the inner bag, through which the inner bag passes from above; a pair of left and right glue supplying rollers whose protrusions are contactable and partially immersed in the glue storage section; a pair of left and right lower pulling rollers provided on both sides of the glue application roller in the axial direction and through which the inner bag passes; A pair of left and right cam rollers are provided below this lower pull roller and have protrusions on their circumferential surfaces that can be contacted by the inner bag, and a pair of left and right cam rollers are provided below this cam roller on one side below and store the unfolded base paper for the outer bag. a storage frame, a cross-feeding roller provided at the bottom opening of the storage frame for horizontally feeding the outer bag base paper, and a stopper provided in the feeding direction of the cross-feeding roller and locking the leading end of the outer bag base paper. and a pair of left and right laminating rollers provided below the cam roller and at the intersection of the feed direction of the lateral feed roller. 3 The circumferential speeds of the upper pull roller and the lower pull roller are the same or approximately the same, the circumferential speeds of the lower pull roller and the laminating roller are the same or approximately the same, and the rotation speeds of the cutter roller and the gluing roller are the same. A double bag bag making device according to claim 2, characterized in that: