JPH10194238A - Method for supplying of packaging bag and device thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely supply packaging bags one by one, by feeding packaging bags with zippers by a forcibly feeding belt after the forefront bag has been fed to a letting-out base in sequence and sucking them one by one by suckers provided in respective first and second swing levers to feed them to the packaging machine. SOLUTION: When a number of packaging bags are superposed on a belt conveyor 11 of a stocker 10 with the bag openings positioned downward and supplied, the forefront packaging bag is fed forward by a letting-out belt. The packaging bag stopped by a letting-out means is sucked by a sucker 54 of a transfer means 45 and fed to the inlet part of a forcible feeding belt 60 and the packaging bag is sent until it contacts a bag-stopper. Then the packaging bag is sucked by the sucker of the first swing lever 80 at the nearby position of the bag opening and hoisted up to the delivery position (I) and received by the second swing lever 90. The packaging bag of which bag opening is positioned upward by the upward rotation of the swing lever 90, is sent to a pair of grips (g) of the packaging machine and held at a specified level by a pair of holding pieces 95.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag having a bulky chuck on the inner surface of a bag opening. The present invention relates to a method and an apparatus for supplying a packaging bag to be sent in by a method.

[0002]

2. Description of the Related Art As a conventional packaging bag supply apparatus, Japanese Patent Publication No. 58-28166 and Japanese Utility Model Publication No.
This is disclosed and known in US Pat. The former feeding device feeds a large number of packaging bags on a low-speed feed belt in a stacked manner and feeds the packaging bags in contact with the large-diameter roll disposed above the belt sequentially at a slightly faster speed, and The leading wrapping bag is fed one by one to a predetermined position by a feeding belt having a speed higher than that of the large-diameter roll. In addition, the latter supply device is an improvement of the former device in order to be applied to a packaging bag provided with a chuck on the inner surface of the bag mouth or a thin and easily curved packaging bag. The bag is sent to a predetermined position of the feeding table so as not to bend, and a structure is devised so as to align suction sites by suction arms thereafter.

[0003]

Incidentally, in the latter feeding device, a packaging bag having a thickness at the tip portion, such as a packaging bag with a chuck, is rarely fed to the feeding end while being overlapped by about two sheets. is there. If the upper packaging bag is sent to the feeding table in a two-ply state where it is slightly retracted from the lower packaging bag, the upper packaging bag whose distal end is separated from the stopper at the stop end is Because of the misalignment, a lower portion than the normal position is gripped when fed into the grip pair of the packaging machine. If the bag mouth is heat-sealed in such a state, sealing failure such as displacement of the sealing position occurs. Under such circumstances, there has been a demand for the development of a supply method or a supply device for surely feeding the packaging bags having the above-described configuration one by one with their leading ends aligned with the payout end.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a packaging bag having a bulky chuck on the inner surface of a bag mouth and a thick packaging bag at a leading end portion thereof, which is smoothly fed one by one to a grip pair of a packaging machine. To provide a packaging bag supply method and apparatus therefor.

[0005]

According to a first aspect of the present invention, there is provided a method according to the first aspect of the present invention, wherein a plurality of packaging bags, each having a bag opening, are placed on a belt conveyor driven by a first motor of a stocker section. And feeding the feeding belt of the feeding means disposed above the belt conveyor faster than the belt conveyor to separate the leading packaging bag from the following packaging bag and send it to the front feeding table, The packaging bag is sucked by a sucker that can move back and forth in a transfer means provided on the feeding table, and is sent to a continuously operated forced feed belt.
The sucker provided on the swinging lever sucks the vicinity of the bag mouth of the packaging bag, whose tip abuts on the front bag stopper, lifts it to the transfer position, and sucks and receives it with the sucker provided on the second swinging lever. The second swinging lever is configured to be clamped at a predetermined height position to a pair of clamping pieces for feeding the bag with the bag mouth upward to the grip pair of the packaging machine by the upward rotation of the second swing lever. It is characterized by.

According to another aspect of the present invention, there is provided a stocker unit for feeding a plurality of packaging bags, each having a bag opening downward, on a belt conveyor driven by a first motor. And a feeding means for driving, by a second motor, a feeding belt stretched between a first pulley above a rear portion and a second pulley below a front portion, is provided above the belt conveyor, and the feeding belt is rapidly fed from the belt conveyor. The leading packaging bag is separated from the succeeding packaging bag and sent to the front feeding table, and the fed packaging bag is sucked at the retracted position of the suction cup provided movably back and forth, and at the forward position. A transfer means for feeding the forcibly fed belt is provided, and a suction bag sucks a packaging bag fed by the forcibly fed belt and brought into contact with the bag stopper, and lifts the packaging bag to a delivery position.
A swinging lever and a second swinging lever for sucking the packaging bag lifted by the first swinging lever with a suction cup and clamping the packing bag at a predetermined height position to a sandwiching piece pair provided at a supply position. It is characterized by the following.

[0007]

When a large number of wrapping bags are laid on a belt conveyor of a stocker section with the opening of the bags facing down and supplied, the leading wrapping bag is fed by the feeding belt of the feeding means which is rapidly fed from the belt conveyor. It is separated from the subsequent packaging bags and sent to the feeding table in front one after another. The packaging bag that has been fed and stopped on the feeding table is sucked by the suction cup of the transfer means and fed into the entrance of the forced feed belt that is continuously operated, and until the tip of the packaging bag comes into contact with the front bag stopper. Sent. When the packaging bags are fed out while overlapping, only the uppermost packaging bag is adsorbed by the suction cup of the transfer means.

Next, the vicinity of the mouth of the sent packaging bag is sucked by the suction cup of the first swing lever and lifted to the delivery position, and is sucked and received by the suction cup of the second swing lever. The packaging bag whose bag mouth is turned up by the upward rotation of the swing lever is clamped at a predetermined height position on a pair of clamping pieces fed into a grip pair of the packaging machine.

The method and the apparatus for supplying a packaging bag are not limited to a normal packaging bag without a chuck, but also include a packaging bag having a thick tip at a tip thereof such as a packaging bag having a bulky chuck on the inner surface of a bag mouth. There is an advantage that the leading end can be fed into the feeding end one by one without fail. As a result, the packaging bag, which has been pending in the conventional apparatus, can be fed into the grip pair of the packaging machine at an appropriate height position, which is very useful for eliminating problems such as defective sealing positions.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a side view, FIG. 2 is a plan view excluding a feeding table, FIG. 3 is a side view of the feeding table, FIG. 4 is a vertical side view of an inlet portion of a transfer means and a forced feed belt, and FIG.
1 is a sectional view taken along line AA of FIG. 1, and FIG. 6 is a sectional view taken along line BB of FIG.

A packaging bag a of the packaging bag supply device P shown in FIG.
A belt conveyor 11 is provided in the stocker section 10 for supplying the belts in a pile. The belt conveyor 11 rotatably supports pulleys 12 and 13 provided with three rows of belt grooves facing the top from openings 2 and 3 formed near the middle position and the rear end of the machine base 1, A belt 14 having a circular cross-section with the upper traveling part exposed on the machine base 1 is stretched over pulleys 12 and 13, and the pulley 12 is slowly driven to rotate by a first motor 15 attached to the bottom of the machine base 1. It is provided as follows. Reference numerals 16 and 17 denote a pair of guide plates for guiding both sides of the packaging bag a provided on the machine base 1. The spacing between them is adjustable so as to correspond to various types of packaging bags a. FIG.
As shown in the figure, the extending ends 16a, 17 of the guide plates 16, 17
A bag stoppers 18 and 19 projecting inward are attached to a. A detection lever 20 for bringing the tip of the packaging bag a into contact with the bag stopper 18 is swingably supported on one of the bag stoppers 18. The proximity sensor 21 that senses the detection lever 20 includes a packaging bag a
And when the packaging bag a is not detected, the control valve that controls the vacuum suction operation of the suction cup 81 described later is stopped.

Above the belt conveyor 11, guide bars 26 fixed to both outer surfaces of the machine base 1 have side plates 2 attached thereto.
7 is provided with a feeding means 25 in which the slide 7 is slidably fitted. A rotating shaft 28 supported between the side plates 27 of the feeding means 25 includes:
A first pulley 29 provided with two rows of belt grooves is attached, and the rotating shaft 28 is provided via a belt 31 by a second motor 30 attached to the side plate 27. A second pulley 34 is rotatably supported at the tip of a swing arm 33 pivotally supported by a shaft 32 between the side plates 27. In addition, the support plate 35 that rotatably supports the intermediate pulleys 36 and 37 is
It is attached to the shaft 32 inside the swing arm 33.
Reference numeral 38 denotes a first pulley 29, an intermediate pulley 36,
7 is a feeding belt having a round cross-sectional shape that is stretched over a second pulley 34 at the lower front part.

A proximity sensor (not shown) for detecting the swing of the tip of the swing arm 33 is provided, and the tip of the swing arm 33 is pushed by the packaging bag a sent by the belt conveyor 11. The first motor 15 is provided so as to stop driving when it floats. At this time, only the second motor 30 is driven to feed the leading packaging bag a to the front delivery table 1a by the delivery belt 38, and the delivery belt 38 is always fast-forwarded from the belt conveyor 11 to remove the leading packaging bag a. It is configured to be separated from the succeeding packaging bag a and sent to the front feeding table 1a. Reference numeral 39 denotes a proximity sensor for detecting the presence or absence of the fed out packaging bag a.
It is arranged below.

The transfer means 45 feeds the packaging bag "a" fed by the feeding means 25 to a later-described forced feed belt 60. As shown in FIGS.
Between the bearing plates 46 attached to both outer surfaces of the
8 and a pair of links 49,
Fix 50. Reference numeral 51 denotes an L-shaped link in which a horizontal piece 51a is pivotally supported at the ends of the links 49 and 50, and a vertical piece 51b thereof is provided.
A pair of blocks 56 is attached to the horizontal shaft 52 fixed to the horizontal shaft 52, the suction pipe 53 having a suction cup 54 at the end thereof being urged downward by a spring 55 so as to be vertically movable. One end of a rod 57 is attached to the horizontal shaft 52, and the other end is connected to an arm 93 fixed to a rotating shaft 92 described later. Thus, the suction cup 54 can be moved back and forth by the parallel link movement due to the reciprocating operation of the rod 57, and the stationary packaging bag a is sucked by the vacuum suction action at the retracted position of the suction cup 54 on the feeding table 1a. Forced feed belt 60 in forward position
It is provided so that it may be fed into the entrance part of. The vacuum suction operation of the suction cup 54 is stopped at the forward position.

As shown in FIG. 1 and FIG.
No. 0 belt conveyor 61 rotatably supports pulleys 62 and 63 provided with three rows of belt grooves facing the top from openings 5 and 6 formed near the front end of the machine base 1 and at the position of the feeding table 1a. Then, a belt 64 having a circular cross-section with the upper running portion exposed on the machine base 1 is wound around pulleys 62 and 63, and the pulley 62 is rotated by a third motor 65 attached to the bottom of the machine base 1. It is provided in. As shown in FIGS. 4 and 6, a pressing roll 70 on which three rows of belts 71 having a round cross-section are fitted has a bearing 73 rotatably supporting a shaft 72 thereof.
Is provided so as to be urged by a spring 74 and elastically contact the pulley 63. Further, a gear 68 provided on a portion of the rotary shaft 66 of the pulley 63 protruding from a base 67 provided on an outer surface of the machine base 1 and a gear 75 provided on a protruding portion of the shaft 72 mesh with each other. , Presser roll 70
Are provided so as to rotate synchronously with the pulley 63.

As shown in FIGS. 1 and 2, reference numeral 80 denotes a pair of suction bags 81 for sucking the packaging bag a, which has been sent by the forcible feed belt 60 and abutted on the bag stoppers 18, 19, and lifting it up to the delivery position (I). The first swing lever of
The first swing lever 80 is swingably supported by a stand 85 erected on a base e of the packaging machine. Reference numeral 82 denotes a rod that connects the first swing lever 80 and a lever 86 that is swingably supported by a stand 85. Also, 90
Is a second swing lever for sucking the packaging bag a lifted by the first swing lever 80 with the suction cup 91 and sandwiching it with the pair of sandwiching pieces 95 provided at the supply position (II). The swing lever 90 is swingably supported by a rotating shaft 92 provided on the stand 85, and is provided so as to be reversibly rotated between a transfer position (I) and a supply position (II) by a link mechanism. Have been. The first swing lever 80, the second swing lever 90, and the pair of holding pieces 95 described above have the same structure as that disclosed in Japanese Patent Publication No. 6-55604. g indicates a grip pair of a general rotary packaging machine.

The operation of the packaging bag supply device P having such a configuration is described in the section of the operation of the invention described above and in each component, and therefore the description thereof is omitted. According to the method and the apparatus for supplying a packaging bag, a packaging bag having a thick tip portion such as a packaging bag provided with a bulky chuck on the inner surface of the bag opening which has been difficult to handle in the conventional apparatus. Thus, it is possible to feed the paper one by one with the leading end aligned with the payout end.

[Brief description of the drawings]

FIG. 1 is a side view

FIG. 2 is a plan view excluding a feeding table.

FIG. 3 is a side view of the feeding table.

FIG. 4 is a longitudinal sectional side view of an inlet portion of a transfer means and a forced feed belt.

FIG. 5 is a sectional view taken along line AA of FIG. 1;

FIG. 6 is a sectional view taken along line BB of FIG. 1;

[Explanation of symbols]

P → Packaging bag supply device a → Packaging bag g → Grip pair I → Delivery position (of packaging bag) II → Supply position (of packaging bag) 1 → Machine 1a → Pawl feeder 10 → Stocker part 11 →
Belt conveyor 18, 19 → bag stopper 20 → detection lever 21 →
Proximity sensor 25 → feeding means 29 → first pulley 34 → second pulley 38 → feeding belt 45 → transfer means 54 → suction cup 60 → forced feed belt
70 → Presser roll 80 → First swing lever 90 → Second swing lever 95 →
Sandwiching pair

Claims (2)

[Claims] 1. A feeding belt of a feeding means disposed over a belt conveyor driven by a first motor of a stocker unit, in which a number of packaging bags with their bag mouths down are laid on a belt conveyor driven by a first motor. Is fast-forwarded from the belt conveyor to separate the leading packaging bag from the succeeding packaging bag and send it to the front payout table, and to suck the packing bag by the sucker that can move back and forth of the transfer means provided on the payout table. To the forced feed belt which is continuously operated, and the sucker provided on the first swing lever sucks the vicinity of the bag mouth of the packaging bag in which the front end is in contact with the front bag stopper, and lifts the bag to the transfer position. (2) Suction is received by a suction cup provided on the swinging lever, and then a predetermined pair is formed on a pair of sandwiching pieces for feeding the packaging bag with the bag mouth upward to the grip pair of the packaging machine by the upward rotation of the second swinging lever. of A method for supplying a packaging bag, wherein the packaging bag is configured to be clamped at a height position. 2. A stocker section for feeding a plurality of packaging bags with their bag openings down onto a belt conveyor driven by a first motor, and a first pulley above a rear section and a second pulley below a front section. A feeding means for driving the feeding belt stretched by the second motor by the second motor is provided above the belt conveyor, the feeding belt is fast-forwarded from the belt conveyor, the leading packaging bag is separated from the subsequent packaging bag, and A transfer means is provided so as to be fed to the feeding table, and a transfer means is provided for sucking the fed out packaging bag at a retracted position of a sucker provided movably back and forth, and for feeding the sucked packing bag to a forced feed belt at an advanced position. The suction bag sucks the packaging bag contacted with the bag stopper and lifts it to the delivery position.
A swinging lever and a second swinging lever for sucking the packaging bag lifted by the first swinging lever with a suction cup and clamping the packing bag at a predetermined height position to a sandwiching piece pair provided at a supply position. A supply device for a packaging bag.