JP7241224B1 - Open-mouthed bagging device for continuous plastic bag rolls - Google Patents

Abstract

To provide an open-mouthed bagging device that enables a purchaser to pack a bag in a short period of time and to open the mouth of a plastic bag hygienically and stably. SOLUTION: A bag pulled out from a continuous plastic bag winding roll 1 and having its mouth opened is pulled out to a position where a purchaser can easily insert a purchase item, and when the bag is still connected to the next bag, it is placed on a bagging table 17. When the purchased items are put in and the bag is pulled out to take home, the next continuous bag 7 passes between the free roller 10 and the friction member 13, and the perforation 3 on one side of the continuous bag in contact with the friction member is torn. Then, the opening of the next bag is performed, and all the perforations are torn and separated, and the next bag stands by on the bagging table in an opened state. [Selection drawing] Fig. 1

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an open-mouth bagging apparatus for continuously wound plastic bag rolls installed in supermarkets and the like.

In recent years, supermarkets and the like have introduced automatic product readers and automatic checkout machines for purchasers themselves in order to avoid congestion at cash registers during checkout. However, at the table (soccer table) where the purchased items are refilled into plastic bags or personal bags after the payment is completed, the purchaser packs the perishables and wet items into plastic bags to prevent them from flowing out. In addition to taking a lot of time, there was a problem that settlement was completed early, causing congestion, and increasing the number of places where purchased items were repacked.

Plastic bags used for service in supermarkets, etc., are formed in a long, thin-walled cylinder made of synthetic resin such as polyethylene, and are preliminarily provided with belt-shaped weld-sealed portions that serve as the bottom of the plastic bag and perforations for cutting adjacent thereto at regular intervals. A large number of bags are continuously formed by this method. The perforations for cutting are cut off one by one by the separation protruding part, but since the opening of the plastic bag is not performed, the purchaser must also open the opening of the plastic bag. There was the problem that it took a long time to put the items into the plastic bag, and the number of tables that repacked the purchased items into plastic bags and personal bags had to be increased, which was not a favorable situation for the supermarket side.

In order to solve the above problems, Patent Document 1 discloses a free roller rotatably provided in which a continuously wound roll of a plastic bag is rotatably held on a substrate for opening the plastic bag, and the free roller. There has been proposed a device for cutting open openings for synthetic resin roll-shaped continuous bags provided with a friction member made of a material having a predetermined frictional resistance and provided via an adjustment mechanism so as to be in contact with the center. Since the cut-off bag is a thin film, the position of the bag cannot be determined and stable insertion is not possible when packing the article into the bag, thus requiring time and labor for packing. Also, the adjustment of the pressure between the friction member and the free roller is delicate in order to open the mouth. there was a point

JP 2007-182254 A

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems, and to provide an opening-opening bagging apparatus for continuously winding rolls of plastic bags that can easily, quickly, and hygienically and stably open and pack plastic bags. and

In order to solve the above-mentioned problems, the opening bagging apparatus for continuous rolls of plastic bags of the present invention provides a continuously rotatable continuous roll of plastic bags having band-like weld-sealing portions and perforations for cutting adjacent thereto provided at regular intervals. a free roller rotatably provided on the substrate; a friction member provided in pressure contact with the center of the free roller; and a bagging table provided adjacent to the free roller. The open-ended bag stuffing device for continuously wound plastic bag rolls is provided, wherein the open-ended bag pulled out from the continuously wound plastic bag roll is pulled out to a position where the purchaser can easily put in the purchase item, and the next bag is opened. When the purchase is put on the bagging table and the bag is pulled out for taking home, the next continuous bag passes between the free roller and the friction member and comes into contact with the friction member. The perforations on one side of the continuous bag are torn, and the next plastic bag is opened, and the perforations are all torn and separated. , the free roller for passing the lower plastic bag of the continuous bag pulled out from the continuous plastic bag winding roll as it is, and the free roller that presses against the upper surface of the upper plastic bag of the pulled out continuous bag and tears the perforation of the upper plastic bag. the friction member for opening the continuous bag, and when the continuous bag is pulled out further, all the perforations are torn to divide the continuous bag and open the next plastic bag; and a table on which the plastic bag pulled out from the continuous plastic bag roll to the vicinity of the perforations of the plastic bag for inserting the product is placed, wherein The friction member is rotatably attached to a support shaft installed between the substrates and attached to an arm pressed against the free roller side by a pressure-adjustable spring body. The contact between the friction member and the continuous bag is released by pressing against the free roller when the continuous bag is torn by eye, and by lifting the continuous bag upward when pulling out the continuous bag. Further, in the open-mouthed bagging apparatus for continuously wound plastic bag rolls of the present invention, it is desirable that the friction member is attached to a mounting portion in which the rear end side of the arm is a free end. Further, in the open-mouthed bagging apparatus for continuously wound plastic bag rolls of the present invention, the arm has a concave groove at a position facing the free roller so that the friction member can be deformed following the shape of the outer surface of the free roller. is formed to increase the frictional force.

The opening-open bagging apparatus for continuously wound plastic bag rolls of the present invention comprises: a substrate for rotatably holding continuous plastic bag rolls having belt-like welded sealing portions and perforations for cutting adjacent thereto provided at regular intervals; A rotatably provided free roller, a friction member provided so as to press against the center of said free roller, and a bagging table provided adjacent to said free roller. In the open bag packing apparatus, the opened bag pulled out from the continuous plastic bag roll is pulled out to a position where the purchaser can easily put in the purchased product, and when the bag is still connected to the next bag. When the purchased goods are placed on the bagging table and the bag is pulled out to be brought back, the next continuous bag passes between the free roller and the friction member, and the sewing machine is performed on one side of the continuous bag in contact with the friction member. The mesh is torn and the opening of the next bag is performed, and all the perforations are torn and separated, and the friction member can reliably open the bag, In addition, since purchased items can be placed on the bagging table while they are still connected to the next bag, the bag can be stably packed, and the refilling work after payment can be easily and quickly processed. has the advantage of reducing the number of refill tables. Further, the friction member is rotatably attached to a support shaft installed between the substrates, and is attached to an arm pressed against the free roller side by a pressure-adjustable spring body. When the continuous bag is torn at the perforations, it is pressed against the free roller, and when the continuous bag is pulled out, the continuous bag is lifted upward, so that the continuous bag hits the tip of the arm and the friction member. If the contact with the continuous bag can be released, there is an effect that the continuous bag can be pulled out lightly. Furthermore, since the spring body is capable of adjusting the pressing force that presses the free roller side, it is possible to adjust the pressing force that presses the free roller side to an appropriate pressing force. There is an effect that the mouth can be reliably opened. In addition, as in claim 3, the friction member is attached to a mounting portion in which the rear end side of the arm is a free end. Since the continuous bag will be damaged when pulling out the continuous bag at the point where the continuous bag is pulled out, the rear side is used as a free end without providing a groove or step around the tip of the arm, and the friction member is attached from the rear side. There is an effect that the bag is not damaged by being caught. Further, as in claim 4, the arm is formed with a concave groove at a position facing the free roller so as to follow the shape of the outer surface of the free roller so that the friction member can be deformed, thereby increasing the frictional force. This has the effect of being able to tear perforations stably without applying a large pressure contact force to the free roller.

It is a perspective view showing the whole of the present invention. FIG. 2 is a front view of FIG. 1; FIG. 3 is a cross section taken along the line AA of FIG. 2; It is a BB cross section of FIG. 2, and is an operation state diagram at the time of the mouth-opening action. It is a BB cross section of FIG. 2, and is an operation state diagram at the time of withdrawal. It is a perspective view at the time of inserting purchased goods. 7(a) is a plan view, and FIG. 7(b) is a sectional view taken along the line CC of FIG. 7(a). 8(a) is a plan view, and FIG. 8(b) is a sectional view taken along the line DD of FIG. 8(a). 9(a) is a plan view, and FIG. 9(b) is a cross-sectional view taken along line EE of FIG. 9(a).

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIG. 1, a continuous plastic bag roll (1) is horizontally mounted on a roll receiving shaft (5) provided on a substrate (6) and on a core rod support (18) on the left and right side walls. ) to be rotatably held. Above the continuous plastic bag roll (1), a freely rotatable free roller (10) parallel to and slightly longer than the width of the continuous plastic bag roll (1) is attached to the substrate (6). Supported. Further, a bagging table (17) is also supported on the substrate (6) adjacent to the free roller (10). The table (17) is provided so that the center position of the free roller (10) and the upper surface of the table (17) are substantially aligned. ) and the friction member (13). At the end of the table (17) on the arm (14) side, a protruding part is provided so that the plastic bag containing the purchased product placed on the table does not interfere with the arm (14) or the friction member (13). It does not matter if they are formed.

As shown in FIG. 4, a rotatable arm (14) is provided at the center of an arm shaft (11) supported by a substrate (6), a torsion spring (15) is incorporated therein, and a pressure adjustment collar (16) is provided. ) to adjust the pressing load. One end of the torsion spring (15) is inserted into the hole of the arm (14), the other is inserted into the hole of the pressure adjustment collar (16), and the arm (14) pushes the pressure adjustment collar (15) in the direction of pressing the free roller (10). 16) is turned to increase the pressing load. The pressure adjustment collar (16) is fixed to the arm shaft (11) by a split clamp and does not move when the pressure load is recoiled. . A friction member (13) made of a flexible rubber material (silicon rubber) or the like is provided on the arm (14) so as to abut on the circumferential surface of the free roller (10). ₂ = T ₁ e ^uθ For example, if the coefficient of friction between the plastic bag and the friction member is 0.6 and the contact angle is 36 degrees, the frictional force is increased by about 1.5 times) to increase the frictional force, and the upper plastic bag (9 ), and do not apply a large pressure contact force to the free roller (10). The stability of tearing perforations has been increased so that there is no accident. When the plastic bag is to be pulled out as shown in FIG. 5, if the pull-out angle is raised slightly, the upper plastic bag (9) contacts the tip of the arm (14) and the friction member (13) does not come into contact with the arm (14) and can be pulled out lightly. Therefore, it is simple and has good operability.

If the arm (14) has a groove or step on the tip side (19), the sharp portion of the arm (14) will scratch the bag when the continuous bag (7) is pulled out. No grooves or steps are provided around the tip, and the rear side (20) is used as a free end, and the friction member (13) is attached from the rear side (20). Further, at a position facing the free roller (10), a recessed groove (21) is formed to follow the shape of the outer surface of the free roller (10) so that the friction member (13) can be deformed. It is designed to increase the frictional force applied to the The concave groove (21) has a width and depth that allow contact at a contact angle of 40 degrees between the friction member and the free roller, but may have a width and depth that allows contact between the friction member and the free roller at 0 to 180 degrees. Also, the friction member (13) has the rubber tube (22) attached vertically as shown in FIG. 7, or the rubber tube (22) horizontally attached as shown in FIG. A shape using an O-ring (23) may also be used.

A plurality of pressing units ((12), (13), (14), (15), and (16)) may be provided depending on the type (shape of perforations) of the continuous plastic bag winding roll.

A method of incorporating a torsion spring (15) inside the arm (14) is adopted to adjust the pressing load, but a plate spring, compression spring or tension spring may be used by slightly changing the mounting method. In addition, although there are currently various methods for holding the continuously wound plastic bag roll, such as fixing the mandrel, the holding method is not particular.

Next, a description will be given of how to actually use the open-mouthed bagging apparatus for continuously wound plastic bag rolls having the above configuration.

A plastic bag continuous winding roll (1) is set on a core rod (4), and the tip of a continuous bag (7) is passed between an upper free roller (10) and an arm (14) lightly pressed against it and sandwiched. , is set on the bagging table (17). The first sheet is held by the end of the continuous bag (7) and pulled out horizontally. The upper plastic bag (9) in contact with the friction member (13) is torn and opened, and when pulled out further, the perforations (3) for cutting are torn off. , the first plastic bag is cut off.

After the second sheet, the upper part of the bag that has been opened in advance and is waiting is picked up and pulled out to the vicinity of the next perforation, and the purchased item is placed on the bagging table (17) while it is still connected to the next bag. insert. At that time, the bag is held by being connected to the next bag by the belt-like weld-sealed part (2), and the bag can be stably packed. When the packed bag is pulled out as it is, all the perforations are torn by the free roller (10) and the friction member (13) as described above, and the next bag is placed on the packing table with its mouth open. stand by

The friction member (13) has flexibility so that it can be pressed against the outer surface of the free roller (10), increases the frictional force, enables more stable mouth opening, and can be pulled out at an angle when the plastic bag is only pulled out. By slightly raising the arm (14), the plastic bag hits the tip of the arm (14) and the friction member (13) is no longer in contact with the arm (14) and can be pulled out lightly.

(1) Poly bag continuous winding roll (2) Belt-shaped welded part (3) Perforation for cutting (4) Core rod (5) Roll receiving shaft (6) Substrate (7) Continuous bag (8) Lower side plastic bag ( 9) Upper plastic bag (10) Free roller (11) Arm shaft (12) Positioning collars (13), (22), (23) Friction members (14), (24), (25) Arm (15) Torsion spring (16) Pressure adjustment collar (17) Bagging table (18) Core rod support (19) Arm tip side (20) Arm rear side (21), (26), (27) Arm concave groove

Claims (3)

A substrate for rotatably holding a continuously wound plastic bag roll having a band-shaped welded portion and adjacent perforations for cutting provided at equal intervals, a free roller rotatably provided on the substrate, and the center of the free roller. and a bagging table provided adjacent to the free roller. The bag that has been pulled out and opened is pulled out to a position where the purchaser can easily put in the purchased item, and while the purchaser is still connected to the next bag, the purchased item is put in on the bagging table, and the bag is taken home. When pulled out, the next continuous bag passes between the free roller and the friction member, the perforations on one side of the continuous bag in contact with the friction member are torn, and the opening of the next plastic bag is performed. It is an open-mouthed bag stuffing device for continuous rolls of plastic bags in which all of the perforations are torn and separated, and the lower side of the continuous bag pulled out from the continuous roll of plastic bags is allowed to pass through as it is. The roller is pressed against the upper surface of the upper plastic bag of the pulled-out continuous bag to tear the perforations of the upper plastic bag to open the continuous bag, and when the continuous bag is further pulled out, all the perforations are torn. The friction member that divides the continuous bag and opens the next plastic bag, and the plastic that is pulled out from the continuous plastic bag roll to the vicinity of the perforation of the plastic bag in order to insert the purchased product into the plastic bag. An open mouth bagging apparatus for continuously wound plastic bag rolls, comprising a table on which bags are placed, wherein the friction member is rotatably attached to a support shaft installed between the substrates and the pressure can be adjusted. It is attached to an arm pressed against the free roller side by a spring body, and presses against the free roller when tearing the continuous bag at the perforation, and pulls the continuous bag upward when pulling out the continuous bag. An open-mouthed bagging device for continuously wound plastic bag rolls, characterized in that the contact between the friction member and the continuous bag is released by lifting the continuous bag. 2. The open-mouthed bagging device for continuously wound plastic bag rolls according to claim 1 , wherein said friction member is attached to an attachment portion in which the rear end side of said arm is a free end. 2. The arm is formed with a concave groove at a position facing the free roller so as to follow the shape of the outer surface of the free roller so that the friction member can be deformed, thereby increasing the frictional force. 3. The open-mouthed bagging apparatus for continuously wound plastic bag rolls according to any one of 2 above.

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