JPH0237552Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a manufacturing device for fruit hanging bags used in orchards etc. that are automatically formed by a bag making machine. This invention relates to a device for partially folding the inner bag of a double or more multi-layered bag, which is used to cover fruits for the purpose of epidemic prevention to protect and grow them.

Conventional technology Conventionally, multi-layer bags used to bag fruits in orchards are made of an outer bag that blocks direct sunlight during the growing season, and an inner bag made of translucent synthetic paper or paraffin paper. Before the harvest season, the inner bag is left in place and the outer bag is torn to expose it to sunlight. For example, apples, etc. will turn red in about a week, so this kind of multi-layered bag is It is used.

Problems to be solved by the invention Among the known multi-layer bags as mentioned above, the multi-layer bags manufactured by conventional bag making machines are formed by storing the inner bag in multiple layers along the shape of the outer bag. When you bag the fruit and tear the outer bag at the designated time, the inner bag may also be torn in pieces, and the fruit bag may become rounded due to the growing fruit, so do not touch the outer bag only. It was difficult to tear the bag by hanging it, and tearing the bag with care also affected work efficiency.

Therefore, the present invention has been developed by making cuts of a certain depth at bag production intervals on both sides of the advancing flat cylindrical inner bag base paper in a part of the inner bag production line of a conventionally known bag making machine, and at the rear of this cut. By installing an extremely simple partial folding device that raises both corners and folds them inward into a triangular shape, eliminating both corners that form the bottom of the bag, it is possible to create an outer bag using a conventional automatic bag making machine. To provide a device that enables the production of a multi-layer bag for hanging fruit that is easy to tear.

Means for Solving the Problems The configuration of this invention is shown in Figures 1 to 1 corresponding to embodiments.
To explain using FIG. 2, the outer bag 17 and the inner bag 16
In an apparatus for manufacturing a multilayer bag 18, a transparent or translucent continuous paper 1 is folded twice, pasted on the body 2, and fed into a bag-making machine as a flat cylinder with a predetermined width. A part of the guide roll 4
Cuts 5 of a predetermined depth in the width direction are made on both left and right sides of the base paper 3 at regular intervals in the length direction of the base paper 3, that is, at intervals of the length of the bag. , 5 are attached to the left and right sides of the outer periphery, and an anvil roll 8 with which the blades 6, 6 are in contact is provided facing each other, and further parallel to the anvil roll 8, the inner bag Protrusions 10, 10 are symmetrically provided at several places on the left and right sides of the outer peripheral surface of the roll that is rotated to wind and transport the base paper 3, respectively, for erecting both corners 9, 9 immediately after the cuts 5, 5 of the inner bag base paper 3. a large-diameter roll 11, a presser plate 12 extending from an intermediate portion of the roll in contact with the inner bag base paper 3 to a peripheral surface close to the base paper 3, and a presser foot that rotates in contact with the large-diameter roll 11 on the front part thereof. A roll 13 is provided, and both corners 9, 9 of the inner bag base paper 3 immediately after the cuts 5, 5, which form the bottom of the bag, are folded inward into a triangular shape and transferred to the regular path of the bag making machine via a guide roll 14. This is how it was done.

Function Next, to explain the function of this device, the base paper 3 for the inner bag, which is laminated into a flat cylindrical shape from the continuous paper 1 and transported through the inner bag manufacturing line by the operation of the bag making machine, is transferred as shown in Fig. 1. The bag is passed through the guide roll 4 between the anvil roll 8 and the cutter roll 7, and at this time, the blades 6, 6 provided on the left and right sides of the rotating cutter roll 7 create a constant bag length on both sides of the inner bag base paper 3. Cut lines 5, 5 are formed at intervals of 1,000 mm, and then when the inner bag base paper 3 is wound and transferred onto a large diameter roll 11,
In the contact range between the roll and the Nakabukuro base paper 3,
Protrusions 10 provided on the left and right sides of the outer periphery of the large diameter roll 11,
10, both corners 9, 9 immediately after the cuts 5, 5 are pushed out and erected at the timing of the intervals between the cuts 5, 5, 5, 5, and the base paper 3 passes under the padding board 12, so that This upright part is stroked down with the caressing board 12 to form triangular folded parts 15, 15 inward from the inner ends of the cuts 5, 5, and then between the large diameter roll 11 and the presser roll 13. The folded part is shaped after passing through, and the inner bag 1 has a shape in which both corners, which become the bag bottom, are removed at the cuts 5, 5.
6 is transferred to the bag-making path of the regular inner bag via the guide roll 14, and cuts 5, 5 are made in the outer bag 17 by known technical means of an automatic bag-making machine for manufacturing multi-layer bags. , and are cut at intervals of 5,5 and sequentially loaded to produce a multilayer bag 18 as shown in FIG.

Embodiment The embodiment of the present invention will be explained below with reference to the drawings. 1 is a transparent or translucent continuous paper made of synthetic paper, paraffin paper, etc.; 3 is a flat cylinder with both edges of the continuous paper 1 overlapped and attached to the body 2; 4 and 14 are guide rolls installed at intervals in the middle of the transfer path of the Nakabukuro base paper 3, 8 is a guide roll 4,
14, and on the outside of the anvil roll there are straight blades 6, 6 which cut both sides of the inner bag base paper 3 to a predetermined depth in the width direction at intervals on the left and right sides of the roll's outer peripheral surface. The attached cutter rolls 7 are provided so as to face each other and rotate in opposite directions, and the rotational circumference length of the blades 6, 6 of this cutter roll 7 is equal to the length of the inner bag to be manufactured. Set.

Reference numeral 11 denotes a large-diameter roll installed above the anvil roll, and on the left and right sides of the outer peripheral surface of this roll, there are protrusions 10, 10 spaced apart from each other to push up the rear of the cuts 5, 5 formed on both sides of the inner bag base paper 3. In the case of a roll having a circumferential length twice as long as the distance between the cuts 5, 5 and the next cut 5, 5, the protrusions 10, 10 are provided at two locations at an interval of 180 degrees. It is provided.

Reference numeral 12 denotes a padding plate located inside the protrusions 10, 10 of the large-diameter roll 11 and placed on the upper surface of the middle part of the winding transfer range of the inner bag base paper 3 of the roll, and is installed close to the upper peripheral surface of the roll. In addition, in order to facilitate the passage of the base paper, both corners 9, 9 of the inner bag base paper, which is erected with the entry side slightly curved upwards, are folded inward into a triangular shape and are provided so as to be stroked.

13 is a large diameter roll 1 on the front side of the padding board 12;
A presser roll is provided to rotate in contact with the outer circumferential surface of the roller 1, and each of the rolls is rotated in the direction of the arrow by a drive device.

Note that the device of the present invention is not limited to being attached above the path of the Nakabukuro base paper 3 as shown in FIG. 1, but may be placed below or to the side of the path of the Nakabukuro base paper 3. It may be something that

Effects of the invention As explained above, in the production of multi-layer bags for hanging fruits, a folding device with the above configuration is attached to the path of the inner bag base paper which is laminated into a flat cylindrical shape from continuous paper and transferred to an automatic bag making machine. As a result, both bottom corners of the inner bag can be easily and automatically continuously folded into a triangular shape using the transfer of the base paper, and can be easily and automatically folded into a triangular shape without changing the conventional automatic bag making machine for multilayer bags. Both corners of the inner bag relative to the bag can be formed into a cutout part, so when the inner bag is left behind and the outer bag is torn apart after hanging the multi-layer paper for fruit hanging, the outer bag is torn. To simply and easily produce a multi-layer bag that is easy to hang and is convenient to use without the risk of the bags inside being torn all at once. In addition, it is only necessary to attach this device to a part of the path of the Nakabukuro base paper to detour the base paper, and the configuration of the device is simple.Also, a linear transfer line can be used as before, making it possible to use the device effectively. It has the following effects.

[Brief explanation of the drawing]

Figure 1 is a longitudinal cross-sectional side view of the folding device of the present invention, Figure 2
The figure is a plan view, Fig. 3 is a plan view showing the processing state of the inner bag, Fig. 4 is an overall view of the multilayer bag manufactured using this device, and Fig. 5 is a view of the use state and external appearance of the multilayer bag. FIG. 3 is a perspective view showing a torn state of the bag. 3... Nakabukuro base paper, 5... Cut, 6... Blade, 7...
...Knife roll, 8...Anvil roll, 9...Both corners, 10...Protrusion, 11...Large diameter roll, 12
...Passing board, 13...Press roll.

Claims (1)

[Scope of utility model registration request] In a manufacturing device for a multi-layer fruit bag 18 consisting of an outer bag 17 and an inner bag 16, the inner bag base paper 3 is laminated into a flat cylindrical shape from continuous paper and transferred to a bag making machine. A cutter roll 7 and an anvil roll 8 are equipped with blades 6, 6 which are rotated to form cuts 5, 5 of a predetermined depth in the width direction on both left and right sides of the base paper 3 at regular intervals in the length direction. , protrusions 10 protruding from both corners 9, 9 immediately after the cuts 5, 5 of the inner bag base paper 3, respectively, at several places on the left and right of the outer peripheral surface of the roll that is rotated to wind and transport the inner bag base paper 3;
A large-diameter roll 11 provided with a roller 10, a padding plate 12 extending from the middle part of the roll in contact with the inner bag base paper 3 to the circumferential surface close to the base paper, and a rolling plate 12 in front of the roll in contact with the large-diameter roll 11. The folding device for the inner bag of a multilayer bag for hanging fruits is provided with a pressing roll 13 to fold the inner bag base paper 3 at both corners, which form the bottom of the bag, inward and remove the corners.