JP4136553B2 - Bag laying device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, for example, a bag formed of a single or composite material such as synthetic resin or paper is laid in a container such as a corrugated cardboard or cardboard box, or a synthetic resin or metal container case. The present invention relates to a bag laying device used for work.
[0002]
[Prior art]
Conventionally, as an apparatus for laying the above-described bag body, for example, the mouth portion of the bag body separated into a size substantially corresponding to the inside of the box body is held by the upper nail of the bag body transport mechanism and pulled out to a predetermined length. It opens by suction and holding with an adsorber of a spreading mechanism. Subsequently, the mouth portion of the bag body is held open by the lower claws of the bag body lowering mechanism and pulled down to cover the opening side peripheral edge portion of the box body whose upper surface side is opened, and the bottom side of the bag body is blown to the blower There is a bag laying device that reverses the front and back with air blown from and inserted and laid inside the box.
[0003]
[Patent Document 1]
JP-A-11-138664.
[0004]
[Problems to be solved by the invention]
However, the above-mentioned device inserts and lays the bag body, which is held open by the lower claws of the bag body lowering mechanism, into the box body by reversing the front and back by the discharge force of the air blown from the blower. Air tends to remain between the surfaces facing the box, and it is difficult to load the bag in a state along or substantially in close contact with the inner inner wall surface of the box. In addition, a dedicated device must be designed according to the box having various sizes, which increases the manufacturing cost.
[0005]
In view of the above problem, the present invention brings the bag expanding means inserted into the bag body close to the inner bottom of the container while the bag body is expanded to a size approximately corresponding to the inside of the container by the bag expanding means. It aims at providing the bag laying apparatus which can be laid in the state which ensures the volume ratio substantially equivalent to the inside of a container by inserting in depth.
[0006]
[Means for Solving the Problems]
The present invention is a bag laying device that folds the mouth portion of the bag body outward to cover the peripheral edge of the open side of the container, and lays the bottom portion of the bag body along the inner wall surface of the container. substantially a bag opening means for opening the mouth of the corresponding size which is formed in the bag body, the insert that will be inserted to a depth that is close to the inner bottom portion of the apertured bag by the bag opening means and And a bag expanding means that expands and contracts into a proximity state in which the insertion body is allowed to be inserted into the bag body, and a separated state in which substantially the entire bag body is expanded to a size substantially corresponding to the inside of the container. The opening of the bag body opened by the bag opening means is opened to a size that allows the covering to the opening side edge of the container, and the opening of the bag body is folded back to the outside. A bag covering means for covering the edge portion and a bag expanding means inserted into the bag body are provided on the inner bottom of the container. Characterized in that it is a bag laying apparatus and a moving means for inserting the depth is close to is.
[0007]
The above-mentioned bag body is constituted by, for example, a bag body formed in a size substantially corresponding to the inside of the container, and a bag body obtained by separating a substantially cylindrical film raw material continuous in the length direction into a size substantially corresponding to the inside of the container. can do. And the bag body can be comprised by what single or combined materials, such as a synthetic resin and paper, for example. Further, the container can be constituted by, for example, a box made of corrugated paper or cardboard, a plastic, metal, wooden container or the like. Moreover, the bag opening means and the bag covering means can be constituted by, for example, an adsorber, a folded plate, an arm, a chuck, or the like. Further, the bag expanding means can be constituted by, for example, a substantially rod-like or substantially plate-like insert, an insertion frame, an insertion member, or the like. Further, the moving means and the relative moving means can be constituted by, for example, an air cylinder, a solenoid, a chain, a screw shaft, a rail, a cam, a motor, a crank mechanism, a link mechanism, or the like.
[0008]
That is, the opening of the bag body formed in a size substantially corresponding to the container (for example, a box made of cardboard paper) is opened by the bag opening means, and the insertion body of the bag expanding means is allowed to be inserted into the bag body. Insert the inserted body inserted into the bag body after being inserted to a depth close to the inner bottom portion inside the bag body opened by the bag opening means in the vicinity of the proximity state. The bag body is expanded to a size substantially corresponding to the inside of the container by being separated into a separated state expanded to a size substantially corresponding to the inside. In addition, the bag expanding means inserted into the bag body is moved and inserted by the moving means to a depth close to the inner bottom of the container, and the bag body is in a state along and substantially in close contact with the inner wall surface of the container. To load. Further, the opening of the bag body is opened by the bag covering means to a size that allows the covering to the opening side edge of the container, and the opening of the bag body is folded back to the outside. Are covered in a double fold state or a single fold state.
[0009]
As an embodiment, a bag body opened by the bag opening means and the bag expanding means inserted into the bag body are arranged in the direction in which the bag expanding means is inserted into the bag body (for example, up and down Relative moving means for moving in the horizontal direction). In addition, a substantially cylindrical packaging body (for example, a substantially cylindrical film or wrapping paper wound in a roll shape or folded in a flat state) continuous in the length direction is placed in front of the bag opening means. And a bag separation means (for example, a cutting blade and a heating head, a cutting tool such as a cutter or scissors). In addition, a container conveying means (for example, a conveying means such as a chain conveyor, a belt conveyor, or a roller conveyor) that conveys the container is provided at a position where the laying of the bag body that is opened and held by the bag covering means is allowed. it can.
[0010]
[Action and effect]
According to the present invention, the bag expanding means inserted into the bag body is brought close to the inner bottom of the container while the bag body is expanded to a size substantially corresponding to the inside of the container by the bag expanding means. Since it is inserted at a depth, air does not remain between the facing surfaces of the bag body and the container, and the bag body can be reliably and accurately laid in a state along the inner wall surface of the container and in a substantially closely contacted state, A volume ratio substantially equal to the inside of the container can be ensured. And the operation | work which lays a bag with respect to the container which has various sizes can be performed stably, and the improvement of the laying accuracy of a bag can be aimed at.
[0011]
【Example】
An embodiment of the present invention will be described below in detail with reference to the drawings.
The drawing shows a bag laying device used for laying a bag body inside a box body whose upper surface side is an example of a container. In FIG. 1, this bag laying device 1 is wound in a roll shape. Supply mechanism 10 for supplying the film original fabric f, a sealing mechanism 20 for heat sealing the film original fabric f to a size substantially corresponding to the box B, and a size substantially corresponding to the film B The separating mechanism 30 for separating, the pulling mechanism 40 for pulling up the film original fabric f and the bag body F to a predetermined height while opening, and the mouth portion Fa of the bag body F with respect to the box body B whose upper surface side is opened. It is comprised by the bag covering mechanism 50 which coat | covers and loads, and the conveyance conveyor 70 which conveys the above-mentioned box B to the bag covering mechanism 50 lower part.
[0012]
The supply mechanism 10 described above is a film made of synthetic resin having translucency that is folded in a flat state (for example, a gusset folded state or a flat folded state) and wound in a roll shape. The original film f loaded in the loading unit 11 provided at the start end and drawn out from the loading unit 11 is supplied to the supply path via the guide roll 12, the feed roll 13, the presser roll 14, and the dancer roll 15. To the sealing mechanism 20 disposed at the sealing position a and the separating mechanism 30 disposed at the separating position b. Further, instead of the original film f, for example, a bag F formed in a predetermined size may be supplied one by one, or a bag F made of paper or synthetic resin may be supplied.
[0013]
The above-described sealing mechanism 20 presses the upper and lower surfaces of the original film f supplied to the sealing position a with the pressing member 21 and the receiving member 22, and presses the rear portion of the pressing portion with the receiving member 22 and the heating head 23. The film original fabric f is heat-sealed in the width direction at a length position substantially corresponding to the box B. In addition, the feed roll 25 and the presser roll 26 at the rear position of the seal position a rotate in a direction to supply the original film f to the separation mechanism 30.
[0014]
As shown in FIG. 5, the above-described separation mechanism 30 has a pair of adsorbers 34 connected to a negative pressure generator (not shown) such as an intake blower or a vacuum pump installed on both sides of the separation position b. It is attached to a rail 35 that is vertically upside down when viewed from the side so that it can move up and down. It moves down to the lowering position while approaching the suction holding interval, and moves up to the rising position while opening the opening side edge of the film original fabric f by a pulling arm 44 described later. At the time of ascent, one of the adsorbers 34 is raised in advance, and the opening side edge of the original film f is shifted in the surface direction by the pair of adsorbers 34 to facilitate peeling and opening.
[0015]
When the film original fabric f is pulled up to a length substantially corresponding to the inside of the box B by the pulling arm 44, and the lower part of the seal portion of the film original fabric f is adsorbed and held by the pair of adsorbers 34, one adsorber The cutting blade 32 attached to the upper part 34 is moved back and forth or left and right by an advancing / retracting cylinder 33 attached to the rear part of the adsorber 34, and a seal part of the film original fabric f pulled up by the pulling arm 44 and a pair of suctions The gap between the opening side edge of the film original fabric f adsorbed and held by the child 34 is cut in the width direction and separated into one bag body F.
[0016]
The above-described pulling mechanism 40 has a pair of pulling arms 44 attached to a support rail 41 erected on both sides of the separation mechanism 30 so as to be movable up and down. It moves up and down to a lowered position for holding the opening side edge of the film original fabric f opened by 34 and a raised position for holding the opening side edge of the film original fabric f by the covering unit 53 described later.
[0017]
The pair of pull-up arms 44 is pressed by the insertion arm 45 inserted into the opening side inner edge portion of the film original fabric f opened by the pair of adsorbers 34 and the opening side outer edge portion of the film original fabric f. And a pressing arm 46. When the pair of adsorbers 34 are moved upward, they are opened / closed by an opening / closing means such as a cam or gear. Further, for example, by an opening / closing means such as an air cylinder or a cam, the closed state in which the opening side edge of the film original fabric f opened by the pair of adsorbers 34 is held at the raised position and the lowered position, and the holding is released. Open and close in the open state.
[0018]
In addition, the pair of pulling arms 44 are moved up and down along the guide rail 42 installed on the side of the support rail 41, and when opened, the opening side edge of the original film f is held by the covering unit 53 described later. At the time of lowering, the opening side edge of the film original fabric f opened by the pair of adsorbers 34 is close to the interval at which the film is sandwiched.
[0019]
The above-described bag covering mechanism 50 covers the mouth portion Fa of the bag body F with the flap Ba ... continuously provided at the open side edge portion of the box body B, as shown in FIGS. A lower elevating frame 51 and an upper elevating frame, which are installed on the upper part of the pulling mechanism 40 described above, with the covering unit 53 and the loading unit 54 that expands and loads the entire bag body F to a size substantially corresponding to the inside of the box B. 52 is suspended.
[0020]
In addition, the film original film f and the bag body, which are pulled up by the pair of pulling arms 44 by using the moving means such as a servo motor or an air cylinder, for example, the covering unit 53 of the lower lifting frame 51 and the loading unit 54 of the upper lifting frame 52. It moves back and forth between a retracted position that holds the opening edge of F and a forward position that allows the bag body F to be loaded into the box B transported to the laying position c on the transport conveyor 70.
[0021]
In addition, for example, by an elevating means such as a chain or a screw shaft, the bag body F is allowed to expand to a size substantially corresponding to the inside of the box B, and inside the box B conveyed to the laying position c. On the other hand, the bag body F is moved up and down to the lowered position where the loading of the bag body F is allowed. In addition, the covering unit 53 and the loading unit 54 are scaled up or down to substantially correspond to the sizes of the box B and the bag F.
[0022]
The above-described covering unit 53 includes four sets that hold the claw-shaped folded plates 53a as viewed from the side surface inserted into the mouth part Fa of the bag body F separated into one piece and the mouth part Fa of the bag body F. The folding chucks 53b and 53b. Further, the folding plate 53a is moved back and forth together with the folding chucks 53b and 53b by a moving means such as a screw shaft or a servo motor, and is moved relative to the original film f and the bag body F which are pulled up by the pair of lifting arms 44. Thus, the expansion / contraction operation is performed between a proximity state in which insertion is permitted and a separated state in which the bag body F is inserted substantially vertically along the outer corner wall surface of the box B.
[0023]
On the other hand, the folding chucks 53b and 53b are, for example, a downward posture for holding the opening side edge of the film original fabric f lifted by a pair of pulling arms 44 by a rotating means such as an air cylinder or a solenoid, and a flap of the box B The mouth portion Fa of the bag body F with respect to Ba...
[0024]
In addition, a plurality of guide plates 53c, which press the mouth portion Fa of the bag body F against the folded plate 53a, and correct the flap Ba of the box B so as to stand substantially vertically, are opposed to the outer surface of the folded plate 53a. ing.
[0025]
The loading unit 54 has a film raw material f that is opened by a pair of adsorbers 34 with a substantially rod-like or substantially plate-like insertion body 54a as viewed from the side surface suspended inward from the folded plate 53a. Insertion is permitted with respect to the inside, and the bag body F is formed to have a length suitable for expanding to a size substantially corresponding to the inside of the box body B and a length reaching the inner bottom of the bag body F. Further, the insertion body 54a is formed into a film original fabric f and a bag body F which are pulled up by the pair of pulling arms 44 together with the folding plates 53a and the folding chucks 53b and 53b by moving means such as a screw shaft and a servo motor. a proximity state in which insertion is permitted against, separated state where the bag F along the corner portion wall surface of the extension and the box B of the bag F in box B inside substantially corresponding size are inserted substantially vertically Scale up and down.
[0026]
As shown in FIGS. 1 and 2, the above-described conveyor 70 has a reduction gear motor (illustrated) with a feeding belt 71 stretched in parallel with the conveying direction at an interval at which the box B is placed. Owing to the lower part of the bag body F opened and held by the covering unit 53... Then, one box is conveyed to the loading position c set on the conveyance path, and the box B having been laid is conveyed to the next process (for example, a boxing process or a bagging process). In addition, the box body B can be width-adjusted to the reference position side by means of width-shifting means such as a pusher, an arm, and a guide.
[0027]
In addition, the lifting platform 72 on which the box B is placed is disposed between the feeding belts 71 stretched at the laying position c, and the feeding belts 71 are lifted by lifting means such as a screw shaft or an air cylinder. It moves up and down between a state protruding above the transfer surface and a state immersing below the transfer surface.
[0028]
The illustrated embodiment is configured as described above, and the laying operation of the bag body F by the bag laying device 1 will be described below.
First, as shown in FIGS. 1 and 2, the supply mechanism 10 is driven to supply the film original fabric f fed from the loading unit 11 to the seal mechanism 20 and the separation mechanism 30. In addition, as shown in FIGS. 5, 6, and 7, the opening side edge of the original film f supplied to the separation position b is sucked and held by a pair of adsorbers 34 constituting the separation mechanism 30. The inserts 54a... Of the loading unit 54, which are opened in a direction displaced in the plane direction, are inserted into the original film f. In addition, when the film original fabric f is fed out in a length substantially corresponding to the inside of the box B, the film original fabric f supplied to the sealing position a is heated by the heating head 23 of the sealing mechanism 20 and heated in the width direction. Seal.
[0029]
Next, the opening side edge of the film original fabric f opened by the pair of adsorbers 34 is held by a pair of pulling arms 44 constituting the pulling mechanism 40 and pulled up to a predetermined height. As shown in (b), the substantially entire length of the above-described insertion body 54a is inserted to a depth that is close to the inner bottom of the original film f. Thereafter, the suction by the pair of adsorbers 34 is released and the initial position is restored.
[0030]
Next, the opening side edge portion of the film original fabric f pulled up by the pair of pulling arms 44 is sandwiched by the folding chucks 53b and 53b of the covering unit 53 constituting the bag covering mechanism 50, and the folding plate 53a. While being inserted into f, the mouth portion Fa of the bag body F is pressed against the folded plates 53a with the guide plates 53c. Further, when the film original fabric f is pulled up to a predetermined height, the lower part of the seal portion of the film original fabric f is cut by the cutting blade 32 of the separating mechanism 30 and separated into one bag body F. Thereafter, the holding by the pair of pulling arms 44 is released to return to the initial position.
[0031]
Next, the bag body F sandwiched between the four sets of folding chucks 53 b and 53 b is moved to the upper part of the box body B that is transported to the laying position c on the transport conveyor 70. Further, as shown in FIG. 9C and FIG. 10, the mouth portion Fa of the bag body F is made into a flap Ba of the box B by four sets of folding plates 53a and folding chucks 53b and 53b. On the other hand, it opens to the size which can be covered. And the whole bag body F is expanded to the magnitude | size corresponding to the inside of the box B by the insertion body 54a ... of the loading unit 54. FIG.
[0032]
Next, as shown in FIGS. 4, 11, and 12, the covering unit 53 and the loading unit 54 are lowered while the bag body F is expanded and held in a size substantially corresponding to the inside of the box body B, The folded plate 53a of the covering unit 53 and the insert 54a of the loading unit 54 are vertically inserted along the inner wall surface of the corner portion of the box B, and the insert 54a is predetermined with respect to the inner bottom of the box B. The bag body F is lowered to a depth close to the interval, and the bag body F is loaded in a state along the inner wall surface of the box body B and in a substantially closely contacted state. In addition, air remaining between the facing surfaces of the bag body F and the box body B is removed, and a volume ratio substantially equal to the inside of the box body B is ensured.
[0033]
In addition, the flap Ba of the box B is corrected to a posture that stands substantially vertically by the guide plate 53c, and the mouth portion Fa of the double-foldable bag body F is folded outward by the folding plate 53a. The flap Ba of B is covered in a double-folded state with respect to the outer surface, and is laid in a state along the inner wall and corners of the box B (see FIG. 13). Moreover, the mouth part Fa of the bag body F that can be folded in a single manner can be covered and laid (see FIG. 14) in a single folded state on the flap Ba.
[0034]
Next, the holding by the folding chucks 53b, 53b is released, the covering units 53... And the loading unit 54 are returned to the initial positions, and the box B with the bags laid is transported to the next process by the transport conveyor 70. Thereafter, the mechanism 10, 20, 30, 40, 50 is operated in the same manner as described above, and the laying operation of the bag body F is continuously performed.
[0035]
As described above, the insert body inserted into the bag body F with the bag body F expanded to the size substantially corresponding to the inside of the box body B with the folding plates 53a and the insert bodies 54a of the bag covering mechanism 50. 54a... Are inserted and loaded at a depth close to the inner bottom of the box B, so that no air remains between the opposing surfaces of the bag F and the box B, and the bag F It can be laid reliably and accurately in a state along the inner wall surface of the box B and in a state of being in close contact with each other, and a volume ratio substantially equal to the inside of the box B can be secured. And the operation | work which lays the bag body F with respect to the container which has various sizes can be performed stably, and the improvement of the laying accuracy of the bag body F can be aimed at.
[0036]
And since the bag F held by the folding plates 53a of the bag covering mechanism 50 and the inserts 54a is lowered and laid inside the box B, a device dedicated to the box B having a specific size can be designed, There is no need to change the design according to the order, and the work of laying the bag body F on the box body B having various sizes can be performed with one apparatus.
[0037]
In addition, since the original film f continuous in the length direction is pulled upward and separated into one bag body F, the installation space for the apparatus can be reduced, and it can be designed to be simple and compact. Can be manufactured at low cost.
[0038]
FIG. 15 shows another method of the bag covering mechanism 50 in which the mouth portion Fa of the bag body F is sandwiched and expanded by the folding plates 53a and the pressing plates 53d, and the folding plates 53a of the covering unit 53 are paired with each other. Are inserted into the mouth Fa of the bag body F pulled up by the pulling arm 44, and the folding plate 53a ... is pivotally attached to the side, and the folding plate 53a is pivoted by a rotating means such as an air cylinder or a solenoid. , And the mouth portion Fa of the bag body F is sandwiched by the folded plates 53a and pressing plates 53d through the pressing pads 53e with a large contact resistance. The portion Fa can be opened to a size that can be covered with the flap Ba of the box B, and operations and effects substantially equivalent to those of the above-described embodiment can be achieved.
[Brief description of the drawings]
FIG. 1 is a front view showing a bag laying operation by a bag laying device.
FIG. 2 is a side view showing the covering operation of the bag covering mechanism and the conveying operation of the conveyor.
FIG. 3 is a plan view showing an expanding operation and a covering operation by a bag covering mechanism.
FIG. 4 is a front view showing a bag loading operation and a folding operation.
FIG. 5 is a side view showing a state in which a film original is adsorbed by a pair of adsorbers.
FIG. 6 is a side view showing an opening operation of a film original with a pair of adsorbers.
FIG. 7 is a side view showing a film original film clamping operation by a pair of pulling arms.
FIG. 8 is a perspective view showing a bag body pulling operation and an insertion rod inserting operation.
FIG. 9 is a perspective view showing a bag body separation operation and a movement operation.
FIG. 10 is a perspective view showing an expansion operation of the bag body.
FIG. 11 is a perspective view showing the bag insertion operation.
FIG. 12 is a perspective view showing an operation of folding the mouth portion of the bag body into a double folded state.
FIG. 13 is a perspective view showing a state in which the mouth portion of the bag body is put in a double-folded state.
FIG. 14 is a perspective view showing a state in which the mouth portion of the bag body is covered in a single folded state.
FIG. 15 is a side view showing another covering method using a bag covering mechanism.
[Explanation of symbols]
f ... Original film F ... Bag body Fa ... Mouth part B ... Box body Ba ... Flap 1 ... Bag laying device 30 ... Separation mechanism 34 ... Adsorber 40 ... Pulling mechanism 44 ... Pulling arm 50 ... Bag covering mechanism 53 ... Covering unit 53a ... folding plate 53b ... folding chuck 53d ... pressing plate 54 ... loading unit 54a ... insert 70 ... transport conveyor

Claims (4)

A bag laying device that folds the mouth of the bag body outward and covers the peripheral edge of the open side of the container, and lays the bottom of the bag body along the inner wall surface of the container,
Bag opening means for opening the mouth of the bag formed in a size substantially corresponding to the container;
An insertion body to be inserted to a depth that is close to the inner bottom portion of the apertured bag by the bag opening means,
Bag expanding means that expands and contracts the inserted body into a proximity state in which insertion into the bag body is permitted and a separated state in which substantially the entire bag body is expanded to a size substantially corresponding to the inside of the container;
The opening of the bag body opened by the bag opening means is opened to a size that allows the covering of the opening side edge of the container, and the opening side edge of the container is folded back outward. Bag covering means for covering the part;
A bag laying apparatus comprising: bag expanding means inserted into the bag body and moving means for inserting the bag expanding means to a depth close to the inner bottom of the container. Relative moving means for relatively moving the bag body opened by the bag opening means and the bag expanding means inserted into the bag body in the direction in which the bag expanding means is inserted into the bag body. The bag laying device according to claim 1 provided. The bag laying apparatus according to claim 1, further comprising bag separating means for separating and supplying a substantially cylindrical package that is continuous in the lengthwise direction to a size substantially corresponding to the container, in front of the bag opening means. . The bag laying apparatus according to claim 1, further comprising container transport means for transporting the container at a position where the laying of the bag body opened and held by the bag covering means is allowed.

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