JPS6258971B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a suspension device for supply packaging bags, in which several pairs of clamping arms provided with movable arms for gripping the vertical edges on both sides of a packaging bag are rotated in an intermittent rotating circle. In order to protrude from the outer periphery of the plate and supply the bag to a packaging device that sequentially stops each pair of clamping arms at a packaging bag supply position, deformation is caused between the pair of clamping arms until the bag is gripped by the pair of clamping arms. It was designed to be retained without any problems.

(Prior Art) In the above-mentioned packaging apparatus, a configuration in which a movable suction cup 31 shown in FIG. 6 is provided at the supply position and a movable holder consisting of a pair of movable arms is installed above the supply position is well known. However, if the packaging bag a being supplied to the supply position bulges due to the inner contents such as a tray, the inner side of the bag, which is sucked by the movable suction cup, is separated by the outer side and the inner contents. The deformation of the part that is vacuumed by the movable suction cup becomes more pronounced than when there is no internal material,
Since the outer side surface, which is not affected by the vacuum suction, is not deformed, the inner side surface and the outer side surface become misaligned, and the bag opening is pinched by the movable retainer with this misalignment, causing the inner side surface and the outer surface to become Since the vertical edge is grasped by the clamping arm of the packaging device without being corrected, the product is melt-sealed in a state where it is displaced by the movable retainer at the sealing station of the packaging device, resulting in a distorted and distorted seal. It has the disadvantage of resulting in wrinkled packaging.

(Problems to be Solved by the Invention) In view of the foregoing, the present invention provides for packaging bags having internal contents such as trays, without simply sucking them with a movable suction cup and pinching the opening of the bag with a movable retainer. The purpose is to be able to correct the misalignment between the lateral and lateral surfaces.

(Means for Solving the Problems) The present invention has been made to meet the object stated in the previous section, and is movable to project into the clamping portion 44 inside the tip and clamp the vertical edges b on both sides of the packaging bag a. In a packaging device in which several pairs of clamping arms 42 provided with arms 43 protrude from the outer periphery of an intermittent rotating disk 41, and each pair of clamping arms 42 are sequentially stopped at a supply position for a packaging bag a, Packaging bag a with tray 2 inside
A movable suction cup 31 is provided opposite to the supply position, and a movable suction cup 31 advances to the discharge passage 4 with an original position inside the supply position, sucks the packaging bag a, and returns to the original position. A suction holding pipe 32 that sucks the inner side surface of the packaging bag a in place of the movable suction cup 31 at a position, and a bag of the packaging bag a that is installed at a position above the clamping portion 44 and held by the suction holding pipe 32. It is equipped with a movable holder 37 consisting of a pair of movable arms that push the opening d from the front and rear sides and hold it in cooperation with the holding pipe 32, and the suction holding pipe 32 has a suction surface where the suction opening is formed and is a vertical surface, and This invention relates to a device for suspending a supply packaging bag, characterized in that the width is approximately equal to the width between the vertical edges b of the bag a.

A preferred embodiment of the invention is described in the following section.

(Example) A in Figures 1 and 2 shows a packaging bag made of synthetic resin film, etc., and the longitudinal edges b and b on both sides are folded in half,
It is a regular type with an adhesive edge c formed by welding on the bottom. A tray 2 slightly smaller than the bag area is filled inside the bag a. Tray 2 has a low edge 2
Since packaging bag a is provided, the inner space of packaging bag a is expanded to increase its thickness as shown in FIG. 2, and the bag opening d is opened forward and backward. In addition to shape-retaining plates such as the tray 2, the packaging bag a may contain desiccant, concentrated juice, etc. packed in the small bag 3.

Figures 3 to 6 show a packaging bag a which has a tendency to open the bag opening d back and forth by inserting a shape retaining plate such as a tray 2 or the shape retaining plate and a small bag 3 as shown in Figures 1 and 2. A lifting device suitable for supplying to the supply position is shown. Since such a packaging bag a has a non-linear bag opening d, wrinkles and other deformations occur when the bag is pressed and pinched from the front and back. In addition, since there is a bulge in the upper part of the vertical edges b, b, it is not possible to grip the vertical edges at the correct position with the gripping arms of the known packaging device from the front. The seal may become distorted or wrinkled.

Reference numeral 4 denotes a delivery path for the packaging bag a provided opposite to the above-mentioned supply position, and includes a rear edge 5 and a front edge 6.
The side plates 7, 7 protruding from the stand up at right angles,
Side plates 7 are provided on both sides of the center line L in the width direction of the delivery path 4,
A bottom guide plate 10 extending front and rear with the same length as 7 is attached, and a side guide plate 1 is also installed inside each of the front and rear side plates 7, 7.
1 and 11 to form a groove 8 in the bottom guide plate 10. Further, a rear pulley 12 and a front pulley 13 are provided on the lower rear side of the rear edge 5 and on the lower right side in front of the front edge 6, and both pulleys 12 and 13 have two strips running in the groove 8. Pass the conveyor belt 14 over it. A motor bracket 15 is attached in a hanging manner to the front lower surface of the bottom guide plate 10, and a drive pulley 17 is attached to the output shaft of a deceleration motor 16 fixed to the lower end of the motor bracket 15.
A driving belt 18 is hung between the front pulley 13 and the front pulley 13. A large number of packaging bags a illustrated in FIGS. 1 and 2 are supported by a bottom guide plate 10 and a side guide plate 11, and the front end is moved by a pusher 19 that moves on a conveyor belt 14 between the bottom guide plates 10. Push in the direction.

The front ends of the side plates 7, 7 are provided with a short pin-shaped stopper 21 for abutting the vertical edges b, b of the leading packaging bag a _-1 , and a protruding contact control piece of a limit switch (not shown). A stopper 2 that hits the bag opening d of the packaging bag a _-1 between the side plates 7 and 7.
2 will be provided. Immediately behind the stopper 22, a pressing leveling plate 23 is installed which moves up and down with a cam or the like and presses the bag openings d of a plurality of packaging bags a from above to equalize the height.

The front parts of the stoppers 21 and 22 are movable, with the supply position shown in FIGS. 3 and 4 being the original position, and the packaging bag a _-1 on the delivery path 4 being sucked as shown by the chain line in FIG. 3, and returning to the supply position. Install the suction cup 31. In addition, at the supply position, a suction holding pipe 32 whose suction surface formed with a suction port is a vertical plane and whose width approximately matches the width between the vertical edges b of the packaging bag a is installed back and forth depending on the swelling state of the packaging bag a. Provided so that it can be adjusted. The pipe 32
A large number of vacuum suction ports 33 are formed on the vertical suction surface. Further, above the supply position, a pair of movable arms 3 are connected by shafts 35, 35 of the bracket 34.
A movable gripper 37 is provided which pivotally supports the grippers 6 and 36 and performs opening and closing operations as shown by solid lines and chain lines in FIG. The movable arms 36, 36 open as shown in the solid line when the movable suction cup 31 transports the packaging bag a to the supply position as described above, and simultaneously open as shown in the chain line when the packaging bag a is transferred to the suction holding pipe 32. The bag is closed to sandwich the bag opening d of the packaging bag a. A movable suction cup 31 is provided at the front end side of the side plates 7, 7 of the delivery path 4.
Packaging bag a that is attracted by and transported to the supply position
Injection nozzles 38, 38 for spraying pressurized air toward the rear side of the bag mouth d are installed obliquely.

40 is a generally well-known packaging device in which several pairs of clamping arms 42 protrude from the outer periphery of an intermittent rotating disk 41, and each pair of clamping arms 42 can be freely controlled to approach and separate from each other. By stopping the pair of clamping arms 42 and moving the movable arm 43 in the direction of the arrow in FIG.
The packaging bag a is pinched by the rotation of the intermittent rotating disk 41.
is designed to be transferred in a circular direction.

The packaging device 40 stops the clamping portion 44 of each pair of clamping arms 42 at the supply position immediately below the movable gripper 37, and at the same time, the movable suction cup 31 reciprocates from its original position toward the delivery path 4. As a result, the vertical edge b of the packaging bag a, which is suspended from the movable gripping part 37 and held by the suction holding pipe 32,
b is arranged so as to be sandwiched between the clamping portions 44 by the behavior of the movable arms 43, and the movable arms 36,
36 are provided so as to match the upper portions of the clamping portions 44 of the clamping arms 42, as shown by the chain lines in FIG. As described above, the suction holding pipe 32 moves back and forth as shown by the arrow in FIG. Adjust so that it matches the clamping part.

In this embodiment, the deceleration motor 16 is controlled by a manual switch or the like.
is started, and the delivery path 4 is started via the drive belt 18.
The conveyor belt 14 is run, and the pusher 19
Push the many vertically oriented packaging bags a on the bottom guide plate 10 forward, and hit the leading packaging bag a _-1 against the stoppers 21 and 22 and the contact control piece (not shown) of the limit switch, and turn the limit switch. As a result, the deceleration motor 16 is stopped, and the pushing by the pusher 19 is interrupted. At this time, the movable arms 36, 36 of the movable gripper 37 are opened as shown by the solid line in FIG. _-1 hits the front side (inner side surface when viewed from the supply position), and the packaging bag a is exposed to the vacuum suction action.
_-1 is pulled out from between the stoppers 21 and 22 and carried to the supply position. At this time, the suction holding pipe 32 starts vacuum suction from the vacuum suction port 33, and the packaging bag a _-1
At the same time, the vacuum suction of the movable suction cup 31 is interrupted and the suction holding pipe 3 is suctioned.
Let 2 do the adsorption.

The movable suction cup 31 takes into consideration the air resistance of the vertically oriented packaging bag a until it is transported from the extrusion path 4 to the supply position.
An elastic cup-shaped bag with a strong suction effect is used as before, and on the other hand, when the packaging bag a is loaded with trays etc. 2 and other shape-retaining plates, the inner side surface is folded into a single layer as described above. Therefore, the movable suction cup 31 swells the suction part, causing a deformation that shrinks the bag width on the inner side surface, causing the outer side surface to become distorted, but the bag mouth may be pinched by the movable retainer 37 while it is distorted. Instead, the suction is switched to the suction pipe 32, which is formed with the surface on which the vacuum suction port 33 is vertical and has a width that approximately matches the width between the vertical edges of the packaging bag.
By switching, even if the inner side surface is deformed due to suction by the movable suction cup 31, the side surface is corrected to a normal plane, and distortions between the inner side surface and the outer side surface are removed.

However, when levering, the injection nozzles 38 on both sides,
Since pressurized air is blown from 38 toward the outer side surface of the bag mouth d, the mouth edge changes from the open state shown in FIG. 6 to a parallel shape that is close to close contact, and there is almost no opening in the front-rear direction. When this is timed, the movable arms 36, 36 of the movable gripper 37 close as shown by chain lines in FIG. As shown in Figures 4 and 5, the movable arms 36 and 36 are longer on both sides than the packaging bag a _-1 .
In addition, since it is located slightly above the gripping arm 42 of the packaging device 40, the closing operation allows the opening d of the packaging bag a to be held in a straight line so as not to be deformed, and the vertical edges b and b to be held in place. Bag holding part 4 of arm 42
4 and hang it. At the same time as the hanging, the clamping arm 42 of the packaging bag device moves the bag clamping part 44 close to the vertical edges b on both sides, and the movable arm 43 operates to clamp the bag between the bag clamping parts 44, and at the same time, the movable arm 36, 3
6 opens and the vacuum suction holding pipe 32 interrupts suction. The gripping arm 42 moves the packaging bag a _-1 from the supply position by the rotation of the intermittent rotating disc 41, the filling station fills the package with one side of a tray, etc., and the melting station melts and seals the bag opening. Ru.

On the other hand, in the delivery path 4, the packaging bag a _-1 is attached to the movable suction cup 3.
1, the second packaging bag a _-2 on the bottom guide plate 10 releases the pressure on the limit switch and rotates as described above, and the packaging bag a _-2 moves to the stopper 21, 22 and the limit switch contact operating plate until the deceleration motor 16 is pressed strongly.
The pusher 19 is rotated to transfer the pusher 19 to the conveyor belt 14.
move forward. After that, the above-mentioned action is repeated.

(Function of the present invention) As clarified by the description of the embodiments described above, the present invention is provided so as to be movable from the supply position to the delivery path 4 which is provided opposite to the supply position and which delivers the packaging bag a vertically. The suction cup 31 is advanced and returned to the supply position, and the unevenness on the inner side surface of the packaging bag a is corrected by suction and holding by the suction holding pipe 32 instead of the movable suction cup 31, instead of suction by the movable suction cup 31 alone. Furthermore, in cooperation with the suction pipe 32, the bag mouth d of the packaging bag a is held between the pair of movable arms of the movable holder 37, and the vertical edge b is held by the pair of holding arms 42 which are stopped at the supply position of the packaging device. By suspending the packaging bag so that it can be pinched, the opening of the bag is melt-sealed at a melt-sealing station after filling the packaging bag with the packaged items, so that no distortion is left due to suction by the movable suction cup 31.

(Effects of the present invention) The present invention has the configuration illustrated above and the effect described in the previous section, and is oriented vertically and has a tray inside.
A delivery path 4 for the packaging bag a containing such items is provided opposite the supply position, and the supply position is set as the original position, and the delivery path 4 is advanced to adsorb the packaging bag a, and then returned to the original position. The movable suction cup 31 returns, and the movable suction cup 31 moves the inner side surface of the packaging bag a at the original position.
A suction holding pipe 32 that sucks in place of the suction holding pipe 3 and a suction holding pipe 32 installed above the holding portion
A movable holder 37 consisting of a pair of movable arms that presses the bag opening d of the packaging bag a held in the bag 2 from the front and rear sides and holds it in cooperation with the holding pipe 32.
This system eliminates the disadvantage of suspending the packaging bag a in a vertical position with a tray or other charge inside by the movable holder 37 while being sucked by the movable suction cup 31, instead of the movable suction cup. The movable retainer 37 of the retaining pipe 32 has a structure in which the suction surface forming the suction port is a vertical plane, and the width approximately matches the width between the vertical edges b of the packaging bag a. Since the packaging bag a is held together with the vertical edges of the packaging bag by the gripping arms of the packaging device, it has an extremely effective effect as a hanging device.

[Brief explanation of the drawing]

The accompanying drawings show one embodiment of the present invention, and FIG. 1 is an exploded perspective view showing an example of a packaging bag, FIG.
FIG. 4 is a plan view, FIG. 5 is a front view seen from the direction of arrow A in FIG. 3, and FIG.
The figure is a side view taken along the line B--B in FIG. 5, and shows the state immediately before the movable arms 36, 36 start their closing movement. 31...Movable suction cup, 32...Suction holding pipe, 33
...Vacuum suction port, 34...Bracket, 35...Shaft, 3
6...Movable arm, 37...Movable gripper.

Claims (1)

[Claims] 1. Several pairs of clamping arms 42 are provided with movable arms 43 that protrude from the clamping portion 44 inside the tip and clamp the longitudinal edges b on both sides of the packaging bag a, from the outer periphery of the intermittent rotating disk 41. In a packaging device that protrudes and sequentially stops each of the 42 pairs of clamping arms at the supply position of the packaging bag a, the delivery path 4 of the packaging bag A, which is oriented vertically and has a tray 2 etc. inside, is placed in the supply position. A movable suction cup 31 is provided facing each other, sets the supply position as the original position, advances to the delivery path 4, sucks the packaging bag a, and returns to the original position; A suction holding pipe 32 is installed above the holding part 44, and the opening d of the packaging bag a held by the suction holding pipe 32 is pushed from the front and rear sides to remove the holding pipe 32. A movable holder 37 consisting of a pair of movable arms held in cooperation with a suction holding pipe 32 has a suction surface formed with a suction port that is a vertical plane, and approximately matches the width between the vertical edges b of the packaging bag a. A device for suspending a supply packaging bag, characterized in that the bag has a width of approximately 100 mm.