JP3447105B2 - Bag mounting device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag mounting device,
In particular, the present invention relates to a mounting device capable of mounting bags on a plurality of types of boxes.

[0002]

[Prior Art] At distribution centers such as lifestyle cooperatives,
For example, food and various products are packed in a styrofoam box, delivered to dealers and customers, and the box is collected and reused after delivery. In such a delivery system, a thin film bag is attached in advance in order to prevent the boxes from getting dirty and to quickly hand over the products to the store or the customer.

As a means for mounting such a bag in a box, an example thereof is proposed in Japanese Patent Publication No. 4-42242. The mounting device disclosed in this publication has a support mechanism for supporting a film roll formed by winding a flattened tubular film, and a vicinity of the leading end of the film pulled out from the film roll, of a box with an open upper part. A moving mechanism positioned at a predetermined height directly above, a spreading mechanism that sucks and spreads both sides of the film near the leading edge of the film by using at least a pair of suction devices, and the vicinity of the leading edge of the film spread by the spreading mechanism Is held by a chuck jig and lowered relative to the box, the lowering mechanism that positions the tip on the outer circumference of the box, the cutting mechanism that cuts the film to obtain an independent bag, and the upper part of the box. It is provided with a nozzle that blows air downward to push the bag inside the box.

The moving mechanism includes a driving means for moving the chuck jig along an endless moving locus including a vertical descending locus located right above the box, and a chuck at a position on the moving locus before the vertical descending locus. A chuck operating means for activating the jig to catch the vicinity of the leading edge of the film, and a chucking device which is arranged near the expanding mechanism and operates the chuck jig before the suction device adsorbs the vicinity of the leading edge of the film and opens it. Has an opening means for opening the vicinity of the tip of the.

In the mounting device thus constructed, the bag can be automatically mounted in the box, but there is a technical problem described below.

[0006]

That is, in the mounting apparatus disclosed in the above-mentioned publication, for example, the supporting mechanism for supporting the film roll has a fixed structure.
It was not possible to use tubular films with different widths, and it was not possible to attach bags to boxes with different lengths and widths. Also, the box is conveyed by a conveyor, but if the width and length of the box are different, it is necessary to control the stop position according to the size of the box when stopping the box on the conveyor. Since it does not have such a control device, the bag cannot be attached to the boxes having different sizes from this point as well.

The present invention has been made in view of the above conventional problems, and a first object thereof is to provide a mounting apparatus capable of automatically mounting bags suitable for boxes of different sizes. To provide. A second object is to provide a bag mounting device that can reduce the mounting time. A third object is to provide a bag mounting device having a simple structure.

[0008]

In order to achieve the above object, the present invention provides a conveyor for transferring a box having an open upper end, a positioning mechanism for positioning and stopping the box on the conveyor, and a widthwise end portion. , A film roll wound with a closed cylindrical film, a detachable support for the film roll, a roll support mechanism movable along the axial direction of the film roll, and the roll fed from the film roll. A fixed chuck mechanism that holds the tip of the tubular film so that it can be opened above the box, and the fixed chuck that is arranged in front of, behind, and to the left and right of the tubular film that is extended above the box. Four suction heads for suction-holding the tubular film in the vicinity of the mechanism and the suction heads movably supported,
A three-dimensional moving mechanism for moving in the vertical direction and a three-dimensional moving mechanism which is located above the suction head and welds in the width direction of the tubular film;
While cutting to form a bag from the tubular film,
A cutter unit that holds the tubular film on the rear end side of the bag, a vertical movement mechanism that moves the cutter unit in the vertical direction of the box, and air is blown from above the box to blow the bag into the bag. A bag mounting device having a nozzle to be pushed into a box, storing a plurality of types of the box data set in advance, based on the specified box information, the width, length and length of the box from the box data A height is selected, the positioning mechanism, the roll support mechanism, and the three-dimensional movement mechanism are operated in accordance with the selected width, length, and height, and a bag required based on the selected width and length. And a control device that operates the vertical movement mechanism such that the distance between the fixed chuck mechanism and the cutter unit becomes the calculated length.

The three-dimensional moving mechanism and the vertical moving mechanism can be driven by the controller so that the cutter unit and the suction head move simultaneously. Further, the three-dimensional moving mechanism and the vertical moving mechanism can be driven by the control device so that the cutter unit and the suction head move vertically on the same guide rail.

The cutter unit has a cutter head for cutting the tubular film, a welding head for the tubular film, and a sandwiching head for the tubular film, and the welding head is provided in front of the cutter head. In addition to being arranged, the sandwiching head can be arranged behind the cutter head.

[0011]

According to the bag mounting device having the above structure, a plurality of types of box data set in advance are stored, and the width, length and height of the box are selected from the box data based on the designated box information. Then
The positioning mechanism, the roll support mechanism, and the three-dimensional movement mechanism are operated according to the selected width and length, and the required bag length is calculated based on the selected width, length, and height. Since there is a control device that operates the vertical movement mechanism so that the distance between the fixed chuck mechanism and the cutter unit will be the calculated length, it is necessary to load the bags in boxes with different widths, lengths or heights. You can

According to the second aspect of the present invention, the three-dimensional moving mechanism and the vertical moving mechanism are driven by the control device so that the cutter unit and the suction head move simultaneously, so that the bag is mounted on the box. In the meantime, the bag for the next box is prepared. According to the configuration of claim 3, since the three-dimensional moving mechanism and the vertical moving mechanism are driven by the control device so that the cutter unit and the suction head move vertically on the same guide rail, the number of guide rails is reduced. Can be reduced.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. 1 to 12 show an embodiment of a bag mounting device according to the present invention. The bag mounting apparatus shown in the figure is a conveyor 10 and a positioning mechanism 11
, Film roll 12, roll support mechanism 14, fixed chuck mechanism 16, suction head 18, three-dimensional movement mechanism 20, cutter unit 22, and vertical movement mechanism 24.
And a nozzle 26.

The conveyor 10 is mounted and fixed on a supporting table 30 which is fixed on a base 28, and a box B in which a bag A is mounted.
(Width W, length L, height H) are transferred, and the roller 100 and the roller 10 are driven to rotate by a motor M6.
A pair of belts 101 wound between 0,
The belts 101 are provided at intervals in the width direction of the conveyor 10. The distance between the belts 101 is set to be slightly smaller than the width of the smallest size of the box B.

The positioning mechanism 11 is composed of a width guide portion 110 provided on the side of the conveyor 10 and a stopper portion 111 provided between the belts 101 of the conveyor 10. The width guide part 110 is fixed to a plurality of guide plates 110a which are divided and arranged so as to sandwich the conveyor 10 along the conveyance direction of the conveyor 10, a support plate 110b which supports each guide plate 110a, and a lower end of the support plate 110b. The slider 110c is provided and a slide rail 110d that extends in a direction orthogonal to the conveying direction of the conveyor 10 and has the slider 110c slidably fitted therein.

The slider 110c is moved by a ball screw screw (not shown) along the slide rail 110d in a direction away from or in proximity to the conveyor 10, and the ball screw screw is rotationally driven by a motor M9. In this embodiment, the guide plate 110a
Is set at a position lower than the other guide plates 110a in the middle, and when the bag A is attached to the box B,
The length of the bag A folded into the outside of the box B can be increased.

The stopper portion 111 includes a stopper plate 111a protruding and retracting on the front end side of the box B conveyed on the conveyor 10, a cylinder 111b for retracting the stopper plate 111a, and a slider 111c for supporting the cylinder 111b. , Extended in the conveying direction of the conveyor 10,
The slider 111c is composed of a slide rail 111d that is slidably fitted.

The slider 111c is moved by a ball screw screw (not shown) along the slide rail 111d in the conveying direction of the conveyor 10, and the ball screw screw is rotationally driven by a motor M10. The film roll 12 is formed by winding a tubular film 121 whose widthwise ends are closed around a paper tube 120, and a plurality of film rolls 12 having different widths of the tubular film 121 are prepared.

The roll support mechanism 14 is used for the film roll 1.
2 is detachably supported, and is configured to be movable along the longitudinal axis of the film roll 12.
The roll support mechanism 14 is slidably mounted on the guide rail 140 and a guide rail 140 fixedly installed on the same base line on the side of the conveyor 10 so as to be divided on the base 28. It has a pair of sliders 141, a pair of substantially L-shaped support plates 142 fixed to each slider 141, and a pair of roll support rods 143 supported so as to face each support plate 142. .

One of the roll support rods 143 is supported by a support plate 142 so as to be retractable and retractable, and a cylinder 144 for moving the rod 143 back and forth in the axial direction is provided at the end thereof.
Is provided. It is rotatably supported by the other roll support rod 143 support plate 142, and at its end,
The roll drive motor M5 is connected. The slider 141 provided with the motor M5 is moved by a ball screw screw (not shown) in a direction in which the rods 143 come close to or away from each other. The ball screw screw is rotationally driven by the motor M8, and the slider 1 is moved.
The amount of movement of 41 is detected by an encoder coupled to the ball screw screw.

4 and 5 show details of the moving mechanism of the slider 141 on the side where the cylinder 144 is provided. This moving mechanism includes a ball screw 145 arranged in parallel to the side of the guide rail 140 and the ball screw 1
Nut 146 screwed to 45, encoder 147 connected to one end of ball screw 145, and ball screw 14
5 and a motor M7 connected to the other end of the motor 5 via a timing belt 148.

The nut 146 and the slider 141 are connected via a connecting member 149. When the motor M7 is driven to rotate, the slider 141 moves along the guide rail 140, and the amount of movement is detected by the encoder 147. It On the other hand, between the roll support mechanism 14 and the conveyor 10, the tubular film 1 wound around the film roll 12 is provided.
A film guide portion 32 for feeding 21 is installed.

The film guide portion 32 is located between the roll support mechanism 14 and the conveyor 10 and is vertically installed on the base 28 at a predetermined interval.
And a pair of guide arms 3 supported by the respective guide columns 320 so as to be vertically movable and extending to the transport center of the conveyor 10.
21 and a cylinder 322 for vertically moving the guide arm 321.

A plurality of film guide rollers 323 and a tension roller 324 are provided between the guide columns 320. Further, a plurality of film guide rollers 325 are provided between the guide arms 321 and
Guide plates 326, which are curved in a substantially U shape and guide the tubular film 121 substantially vertically downward, are fixedly provided on the front end side thereof. The vertical line passing through the tip of the guide plate 326 is
The center of the box B positioned on the conveyor 10 in the length L direction substantially coincides.

The fixed chuck mechanism 16 releasably clamps the leading end of the tubular film 121 fed out through the film guide 32 on the center in the length L direction of the box B positioned on the conveyor 10. FIG. 7 is an enlarged view of the main part. The fixed chuck mechanism 16 is
A gate-shaped support frame 16 which is erected on the outer periphery of the support base 30.
0, a pair of sandwiching pieces 161 located on the center of the conveying path of the conveyor 10, and a cylinder 162 for moving each sandwiching piece 161 in a direction in which they approach each other or a direction in which they separate from each other.
(Only one cylinder 162 is shown in FIG. 7, but the cylinder for driving the other sandwiching piece 162 is also provided at a symmetrical position.).

The suction head 18 is composed of four pieces which are located in front of, behind, and to the left and right of the tubular film 121 which is fed out above the box B, and the tubular film is provided in the vicinity of the fixed chuck mechanism 16. The device 121 sucks and holds 121 and is connected to a vacuum device (not shown). The three-dimensional moving mechanism 20 includes four suction heads 18 in the width direction (horizontal direction) of the tubular film 121, a direction in which the suction heads 18 approach and separate from the tubular film 121 (front-back direction), and the tubular film 12.
1 for moving in the direction along the longitudinal direction of 1 (vertical direction), the width direction moving portion 200 and the front-back direction moving portion 2
01 and a vertical movement unit 202.

The front-rear moving unit 201 is shown in FIGS.
As shown in FIG. 4, the suction heads 18 are fixed one by one to the tip, four arms 201a, four screw nuts 201b fixed to the base end side of each arm 201a, and arranged in the front-rear direction. Ball screw 201c to which a pair of screw nuts 201b are respectively screwed, and two servo motors SM connected to one end side of the ball screw 201c.
3, SM4.

The ball screw 201c extends in a direction orthogonal to the conveying direction of the conveyor 10, is divided in the middle thereof, and is connected via a differential gear (not shown),
When each servo motor SM3, SM4 is driven, the part near the motor and the part far from the motor rotate in mutually different directions,
As a result, the pair of arms 201a arranged at the front and rear are moved in a direction in which they approach each other and a direction in which they are separated from each other. In such a moving process, the pair of servo motors SM3 and SM4 are synchronously rotated by the control device described later.

A pair of width-direction moving parts 200 having the same structure are provided, are arranged substantially parallel to the ball screw 201c, and a pair of support arms 200a for supporting the front-back direction moving parts 201, and each support arm 200a. A pair of screw nuts 200b fixed to the base end side of
Each screw nut 200b is screwed to support arm 2
A pair of ball screws 2 extending in a direction orthogonal to 00a
00c and a pair of encoders 2 connected to one end of the ball screw 200c and detecting the amount of movement of the support arm 200a.
00d and a pair of motors M12 and M13 connected to the other end of each ball screw 200c.

The vertical movement unit 202 is provided between the pair of width direction movement units 200 and supports the frame 202a supporting the width direction movement units 200 and the base 28 on the opposite side of the guide column 320 with the conveyor 10 interposed therebetween. A pair of pillars 202b vertically installed, a guide rail 202c extending along the longitudinal direction of each pillar 202b, and a slider 202d fixed to the support frame 202a and slidably fitted to each guide rail 202c. And a screw nut 202e fixed to the support frame 202a, and a ball screw 202f to which the screw nut 202e is screwed.

The ball screw 202f is rotated by a servo motor SM1 controlled by a controller described later,
The support frame 202 is driven by the servomotor SM1.
a moves up and down along the column 202b. The cutter unit 22 is located above the suction head 18 and welds and cuts the width direction of the tubular film 121 extending vertically downward from the film guide portion 32 to form a bag A independent of the tubular film 121. And the next bag A
The tubular film 121, which is the front end of the, is sandwiched.

The cutter unit 22 of this embodiment, as shown in detail in FIGS. 9 and 10, has a cutter head 220 slightly shorter than the maximum width of the tubular film 121 used.
The welding head 221 and the holding head 222 for holding the tubular film 121 are provided. The welding head 221 is arranged in front of the cutter head 220 and the holding head 222 is arranged behind the cutter head 220.

The cutter head 220 includes a blade 220a, a blade receiver 220b, and a blade receiver 22 which are arranged to face each other.
It is composed of a cutter cylinder 220c that horizontally moves to the 0b side. The welding head 221 is composed of a pair of welding pieces 221a installed opposite to each other, and a plurality of welding cylinders 221b for moving the respective welding pieces 221a in a direction in which they are spaced apart from or close to each other.
Has a built-in heater H.

The sandwiching head 222 is composed of a pair of sandwiching pieces 222a which are installed opposite to each other, and a plurality of sandwiching cylinders 222b which move the sandwiching pieces 222a in a direction in which they are spaced apart from or close to each other. The vertical movement mechanism 24 is
The cutter unit 22 is moved vertically. The vertical movement mechanism 24 is a support frame 240 formed in a substantially U shape for supporting the cutter unit 22, and a slider fixedly mounted on the support frame 240 and slidably fitted to the guide rail 202c of the support column 202b. 241 and a screw nut 242 fixed to the support frame 240. Screw nut 242
Is a ball screw 2 extending in the same direction as the column 202b.
43, and the ball screw 243 is screwed onto the servomotor M.
It is rotationally driven by 2.

In this embodiment, when the servomotor M2 is rotationally driven, the support frame 240 causes the three-dimensional drive mechanism 20 to move.
It is adapted to move up and down along the column 202b. The nozzle 26 ejects air from above the box B,
The bag A is pushed into the box B, and in this embodiment,
The ejection port is attached to the gate-shaped support frame 160 of the fixed chuck mechanism 16 so as to be directed vertically downward (see FIG. 7).

In the mounting device constructed as described above, each motor is connected to the control device 34 as shown in FIG.
The drive is controlled according to a preset sequence. FIG. 12 shows an example of a control procedure performed by the control device 34. The control device 34 has a built-in storage means, and a box B in which the bag A is preliminarily mounted before the mounting device is used.
Data is input.

The box data at this time is the type of the box to be applied, the width W, the length L, the height H of each box, and the length D to be folded back to the outside of the box. When the input of the box data is completed, the mounting device can be used, and when the control procedure is started, first, in step s1, the box B to which the bag A is to be mounted is
Is designated, and the total number n of the boxes B on which the bag A is mounted is set.
When the box B is designated, the required width of the tubular film 121 is calculated based on the width W and the length L thereof in step s2, the film roll 12 is selected based on the width, and the height is increased. The cut length D ₁ of the tubular film 121 is calculated based on the length H and the folded length D.

When the film roll 12 is selected, the roll 12 designated in step s3 is set. When setting the roll 12 on the support mechanism 14, first, a signal is sent from the control device 34, the motors M7 and M8 are driven, and the gap between the pair of roll support rods 143 corresponds to the film roll 12. Is set to.

The positional relationship at this time is that the motors M7 and M8
Is controlled by the encoder 147, and when the setting of the interval is completed, the cylinder 144 is contracted.
In this state, the selected film roll 12 is positioned between the pair of roll support rods 143, and the cylinder 144
Is extended to cause the rod 143 to enter the paper tube 120 of the roll 12 and rotatably support the roll 12.

When the film roll 12 is supported by the support mechanism 14 in this manner, the tubular film 121 wound around the roll 12 is unwound and the tip thereof is held by the fixed chuck mechanism 16. In this operation, since the total height of the mounting device is relatively high, first, the guide arm 321 of the film guide portion 32 is contracted by the cylinder 322 to lower it, and in this state, as shown by a broken line in FIG. The film 121 is wound around the guide rollers 323, 325 and the tension roller 324 so that the film 121 hangs vertically from the tip side of the guide plate 326, and the tip is positioned between the pair of holding pieces 161 to drive the cylinder 162. It is clamped by doing.

On the other hand, while such an operation is being performed, the control device 34 sets the positioning mechanism 11 based on the data of the box B (step s4).
In the set of the positioning mechanism 11, first, the space between the guide plates 110a of the width guide portions 110 provided so as to sandwich the conveyor 10 is set in correspondence with the width W of the box B.

This setting is performed by sending a signal from the control device 34 to drive the motor M9. Next, the stopper plate 111a of the stopper portion 111 is moved in the carrying direction of the conveyor 10 in correspondence with the length L of the box B. The movement of the stopper plate 111a is performed by sending a signal from the control device 34 to drive the motor M10, and when the stopper plate 111a is set at a predetermined position,
Operate the cylinder 111b to stop the stopper plate 111a.
Are projected onto the conveying path of the conveyor 10.

Further, in parallel with the work of setting the film roll 12, the position setting of the cutter unit 22 and the position setting of the suction head 18 are performed (step s5). The position of the cutter unit 22 is set by sending a signal from the control device 34 to the servo motor SM2 so that the distance between the sandwiching piece 161 of the fixed chuck mechanism 16 and the cutter head 220 becomes equal to the cut length D ₁ and moving up and down. This is performed by vertically moving the support frame 240 of the mechanism 24.

On the other hand, the position of the suction head 18 is set as shown in FIG.
The servo motor SM is arranged so that the space in the front-rear direction is substantially equal to the width W of the box B as shown in FIG.
The motors M12,1 are driven so as to drive the motors 3,4 and to keep the distance in the left-right direction smaller than the width of the tubular film 121.
This is done by driving 3. Further, as shown in FIG. 2, the servo motor SM1 is driven such that the suction head 18 is located at a height slightly above the fixed chuck mechanism 16.

When the above operation is completed, the drive motor M6 of the conveyor 10 is started, and the box B is placed on the belt 101 and conveyed. The movement of the box B in the width direction is restricted by the width guide portion 110, and when the box B reaches the stopper portion 111, the box B comes into contact with the stopper plate 111a and stops while being positioned on the belt 101. This stop state is detected by, for example, a contact sensor provided on the stopper plate 111a, and when the stop of the box B is confirmed, the cutter unit 22 is driven. When the cutter unit 22 is driven, the welding head 22 arranged at the lowest stage
1, the laminated tubular films 121 are welded, and the film 121 is cut by the cutter head 220 disposed on the upper side thereof, whereby the portion of the tubular film 121 having the length D ₁ is the lower end. Is a bag A having an opening.

At this time, in the case of the present embodiment, since the blade 220a of the cutter head 220 is slightly shorter than the width of the tubular film 121, the bag A has a tubular film partially on both end sides. It becomes a state connected to 121. In order to bring the bag A into such a state, the blade 220a may be replaced according to the width of the tubular film 121 of the selected roll 12.

By driving the cutter unit 22,
The sandwiching head 222 arranged at the uppermost stage sandwiches the lower end side of the portion to be the next bag A (step s6). The cutter head 220 and the welding head 221 are driven when the cutting or welding of the film 121 is completed.
The respective thin liders 220c and 221b are contracted.

Then, in step s7, the servomotor S
By driving M3 and M4, the suction head 18 is moved in the front-rear direction (the direction in which the head 18 approaches the tubular film 121), and the tubular film 121 is suction-held from the front and rear surfaces thereof. When the suction holding is performed, the cylinder 162 of the fixed chuck mechanism 16 is operated to release the holding of the film 121.

Next, the motors M12 and 13 are driven so that the suction heads 18 are slightly moved along the surface of the film 121 in mutually different directions.
After separating the sheets of film 121, the servo motor S
The suction heads 18 are moved so as to be separated from each other by reversing M3 and M4, and the leading end of the bag A is opened (step s8).

In the subsequent step S9, the servo motor SM1 is driven to lower the suction head 18 downward. And
The servo motor SM2 is driven almost simultaneously with the downward movement of the suction head 18 to lower the cutter unit 22 (step s9). In this manner, when the suction heads 18 are moved downward so as to be separated from each other and lowered, the bag A is in a state of covering the upper side of the box B while the lower end side of the bag A spreads, and the upper end of the bag A is fixed. When the nozzle 26 is driven after passing through the chuck mechanism 16, the air blown from the nozzle 26 can push the central portion of the bag A into the box B (step s10).

In this case, the lower position of the cutter unit 22 is set at a position where the lower end of the cutter head 220 is close to the fixed chuck mechanism 16, as shown by the phantom line in FIG. 7, and the cutter unit 22 is lowered to this position. Then, the holding piece 161 can enter the inside of the cutter unit 22 and hold the lower end of the tubular film 121.
The holding piece 161 is driven in a direction closer to the cylinder 162, and the tubular film 121 by the holding head 222 is driven.
Is released (step s11).

On the other hand, the lowering position of the suction head 18 is the box B.
Is a position corresponding to the folding length D on the outer periphery of the suction head 18, and when this position is reached, the suction holding state of the suction head 18 is released, and then the suction head 18 is lifted by driving the servo motor SM1. (Step s12). At this time, the cutter unit 22 is also raised by driving the servo motor SM2 (step s13).

By the above operation, the bag A for one box B
Since the mounting of the cylinder 1 of the stopper portion 111 is completed.
11b is contracted, the box B with the bag A attached is conveyed to the outside by the conveyor 10 (step s14), and in the subsequent step s15, it is determined whether or not n is 0, and if it is not 0, step (n-1) is changed to a new n in s16,
In step s17, the cylinder 111b of the stopper portion 111
To extend, return to step s6, and bag A into another box B
Is installed.

On the other hand, if it is judged in step s15 that n is 0, it means that the mounting of the bag to the selected box is completed, so that the procedure ends, and when mounting the bag in another box. , The procedure from step s1 is repeated. Now, according to the bag mounting device configured as described above, a plurality of types of box data set in advance are stored, and the width and length of the box are selected from the box data based on the specified box information. Then, the positioning mechanism 11, the roll support mechanism 12, and the three-dimensional moving mechanism 20 are operated in accordance with the selected width and length, and the required bag length is calculated based on the selected width and length. So that the distance between the fixed chuck mechanism 16 and the cutter unit 22 becomes the calculated length,
Since the control device 34 for operating the vertical movement mechanism 24 is provided, the bags can be automatically attached to boxes having different widths, lengths or heights.

Further, in the case of this embodiment, the three-dimensional moving mechanism 20 and the vertical moving mechanism 24 control the controller 34 so that the cutter unit 22 and the suction head 18 move simultaneously.
Since it is driven by, the bag to be mounted on the next box is prepared while the bag is mounted on the box, and the cycle time for mounting the bag can be shortened. Further, the support column 2 for moving the cutter unit 22 and the mounting head 18 in the vertical direction.
Since 02b and the guide rail 202c share the same one, the structure is correspondingly simplified and the number of constituent parts is reduced.

In the above embodiment, the cutter head 22
When cutting the tubular film 121 by 0, the blade 220
a is made slightly shorter than the width of the tubular film 121,
A part of the bag A is connected to the tubular film 121, and the connecting portion is broken by lowering the suction head 18, but the embodiment of the present invention is not limited to this, and for example, , Tubular film 121 by blade 220a
If the tubular film 121 is sucked and held by the suction head 18 before the cutting, the blade 220a can be made slightly larger than the width of the tubular film 121 to form the bag A in an independent state. is there.

[0057]

As described above in detail in the embodiments,
According to the bag mounting apparatus of the present invention, it is possible to automatically mount bags suitable for boxes of different sizes.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a bag mounting device according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a front view of FIG.

FIG. 4 is an enlarged plan view of an essential part of a roll support mechanism of the mounting device shown in FIG.

FIG. 5 is a side view of FIG.

FIG. 6 is an enlarged side view of an essential part showing a film guide part of the mounting device shown in FIG.

7 is an enlarged side view of a main part of a fixed chuck mechanism of the mounting device shown in FIG.

8 is an enlarged plan view of an essential part of the three-dimensional movement mechanism of the mounting device shown in FIG.

9 is an enlarged plan view of an essential part of the cutter unit of the mounting device shown in FIG.

10 is a cross-sectional view of the main parts of FIG.

11 is an explanatory diagram of a control device of the mounting device shown in FIG.

12 is a flow chart showing an example of a control procedure of the control device of FIG.

[Explanation of symbols]

10 conveyor 11 Positioning mechanism 110 width guide 111 Stopper 12 film roll 121 tubular film 14 roll support mechanism 16 Fixed chuck mechanism 161 clip 162 cylinder 18 Suction head 20 3D movement mechanism 200 width direction moving part 201 Front-rear moving part 202 Vertical movement unit 22 cutter unit 220 cutter head 221 welding head 222 clamping head 24 Vertical movement mechanism 32 Film guide section 34 Control device SM1-SM4 servo motor M5-M13 motor

Continuation of front page (56) Reference JP-A-4-142226 (JP, A) JP-A 64-84825 (JP, A) JP-A 1-114428 (JP, A) JP-A 61-190408 (JP , A) JP 63-162415 (JP, A) Actual opening 63-828 (JP, U) Actual opening 61-93404 (JP, U) Actual opening 61-134907 (JP, U) Japanese Patent Publication 4-42242 (JP, B2) (58) Fields surveyed (Int.Cl. ⁷ , DB name) B31B 7/00 B65B 9/00 B65B 43/12 B65B 43/30

Claims (4)

(57) [Claims] 1. A conveyor for transporting a box having an open upper end, a positioning mechanism for positioning and stopping the box on the conveyor, a film roll formed by winding a tubular film having a widthwise end closed. A detachable support for the film roll, a roll support mechanism that is movable along the axial direction of the film roll, and the tip of the tubular film fed from the film roll can be opened above the box. The four fixed chuck mechanisms that sandwich the cylindrical film and the four cylindrical films that are extended above the box are disposed so as to face each other in the front, rear, left, and right, and that adsorb and hold the cylindrical film in the vicinity of the fixed chuck mechanism. A suction head, a three-dimensional movement mechanism for movably supporting the suction head, and moving the suction head in the left-right, front-rear, and up-down directions, located above the suction head, A cutter unit that welds and cuts the tubular film in the width direction to form a bag from the tubular film, and that sandwiches the tubular film on the rear end side of the bag, and the cutter unit that holds the cutter unit above and below the box. A bag mounting device having a vertical movement mechanism for moving in a direction, and a nozzle for ejecting air from above the box to push the bag into the box, wherein a plurality of types of box data set in advance The box width, length and height are selected from the box data based on the specified box information, and the positioning mechanism and roll support are made to correspond to the selected width, length and height. Mechanism and 3
While operating the dimension movement mechanism, calculate the required bag length based on the selected width and length, so that the distance between the fixed chuck mechanism and the cutter unit is the calculated length, A bag mounting device comprising a control device for operating the vertical movement mechanism. 2. The bag according to claim 1, wherein the three-dimensional moving mechanism and the vertical moving mechanism are driven by the control device so that the cutter unit and the suction head move simultaneously. Mounting device. 3. The three-dimensional moving mechanism and the vertical moving mechanism are driven by the control device so that the cutter unit and the suction head move up and down on the same guide rail. Item 1. The bag mounting device according to item 1 or 2. 4. The cutter unit has a cutter head for cutting the tubular film, a welding head for the tubular film, and a sandwiching head for the tubular film, and the welding head is provided in front of the cutter head. The bag mounting apparatus according to any one of claims 1 to 4, wherein a head is arranged and the sandwiching head is arranged behind the cutter head.