JP6032968B2 - Packaging bag feeder - Google Patents

Description

In the present invention, a large number of packaging bags on the belt conveyor are placed side by side so as to tilt backward in the feeding direction, and the uppermost packaging bag is accurately placed on the stopper installed in the feeding direction of the belt conveyor. The present invention relates to a packaging bag supply device to be fed.

As shown in FIG. 3, the rotary automatic packaging machine 12 includes a clamp 27 on the outer peripheral edge of a rotating filling table 26. The packaging bag 13 adsorbed by the adsorbing means 25 from the packaging bag supply device 11 is delivered to the clamp 27 by the delivery device 28. Subsequently, while being transported by the rotation of the filling table 26, the packaging bag 13 is opened at the bag mouth by the opening device 29, the packaged object is filled by the filling device 30, the bag mouth is sealed by the sealing device 31, and cooled. The bag mouth is cooled by the device 32 and carried out of the machine.

As a form of the packaging bag supply device 11, as shown in FIG. 1, a belt conveyor 14 for placing packaging bags 13 arranged in a column so as to tilt backward in the feeding direction, and a roller for driving the belt conveyor 14 33, a feeding device 15 installed above the belt conveyor 14, and a stopper 16 installed in front of the belt conveyor 14 in the feed direction.

As shown in FIG. 5, the suction means 25 is supported by a support bar 41 provided on an arm 40, and the arm 40 is pivotally supported on a rotating shaft 42. The rotation shaft 42 is connected to a drive source (not shown).

The adsorbing means 25 has a lowered position for adsorbing the uppermost packaging bag 13 placed on the packaging bag supply device 11 and an elevated position for delivering the adsorbed uppermost packaging bag 13 to the delivery device 28. Are moved up and down by the rotation of the rotation shaft 42.

As shown in FIG. 2, the feeding device 15 is assembled to a support shaft 18 provided in the housing 17 so that a lever 19 can swing in the vertical direction. In addition, a drive pulley 20 concentrically connected to the motor (not shown) built in the housing 17 and concentric with the support shaft 18 is provided. A tip pulley 22 is provided at the lower right end of the lever 19. The lever 19 between the drive pulley 20 and the tip pulley 22 is provided with an intermediate pulley 21 having a two-stage pulley groove structure. A drive belt 23 is stretched between the drive pulley 20 and one pulley groove of the intermediate pulley 21, and a feeding belt 24 is stretched between the other pulley groove of the intermediate pulley 21 and the tip pulley 22.

Next, the operation will be described. In the packaging bag supply device 11, as shown in FIG. 1, the packaging bag 13 placed on the belt conveyor 14 is pressed by the feeding belt 24, and the belts 14, 24, the packaging bag 13 is transported until it comes into contact with the stopper 16 by the rotation of the belts 14 and 24.

When a sensor (not shown) provided on the stopper 16 detects the uppermost packaging bag 13 in contact with the stopper 16, the rotation of the belts 14 and 24 stops. The uppermost packaging bag 13 in contact with the stopper 16 moves the suction means 25 to the lowered position and sucks it. Since the uppermost packaging bag 13 is stopped at a predetermined position in contact with the stopper 16, the suction means 25 has a constant distance from the bag mouth of the packaging bag 13 to the suction position. Yes. The adsorbing means 25 moves to the raised position and the adsorbed packaging bag 13 is delivered to the delivery device 28, and the delivery device 28 delivers the packaging bag 13 to the clamp 27 of the rotary automatic packaging machine 12.

When the uppermost packaging bag 13 comes into contact with the stopper 16, the rear end of the bottom of the packaging bag 13 has just passed through the area pressed by the feeding belt 24. Even if the feeding belt 24 continues to rotate by inertia, the uppermost packaging bag 13 does not move forward, and the uppermost packaging bag 13 stops at a predetermined position abutting against the stopper 16. .

In this case, since the feeding belt 24 presses the lower packaging bag 13 than the uppermost packaging bag 13, when the feeding belt 24 rotates by inertia, the lower packaging bag 13 is moved to the uppermost packaging bag 13. It advances so that it may sneak under the upper packaging bag 13.

When the suction means 25 is in the lowered position, the suction means 25 presses the uppermost packaging bag 13, and in this state, when the lower packaging bag 13 is advanced by the feeding belt 24, When an unreasonable force is applied to the packaging bag 13 and wrinkles and bends occur, the belts 14 and 24 are stopped so that the lower packaging bag 13 is not advanced, and the suction means 25 is in the raised position. The belts 14 and 24 are rotated.

A tension spring 34 spanning the housing 17 and the upper end of the lever 19 cancels the weight of the lever 19 and the tip pulley 22 and adjusts the pressing force of the feeding belt 24 to the packaging bag 13. To do.

Japanese Utility Model Publication No. 05-000608 Noto 3127824 Publication JP 2004-26290 A JP 2006-036299 A

As shown in FIG. 6, when the uppermost packaging bag 13 is advanced toward the stopper 16 by the two belts 14 and 24 while the suction means 25 is raised, the packaging bag 13 happens to happen. If the bag is curved upward, the packaging bag 13 may get over the stopper 16. When the packaging bag 13 that has passed over the stopper 16 is pressed against the suction means 25 that is moving from the raised position to the lowered position, and the suction means 25 that has moved to the lowered position sucks the packaging bag 13, the packaging bag 13. Is not in contact with the stopper 16, the suction means 25 has a distance from the bag mouth of the packaging bag 13 to the suction position deviated from a predetermined value. In this state, the suction means 25 moves from the lowered position to the raised position, delivers the packaging bag 13 to the delivery device 28, and when the delivery device 28 delivers to the clamp 27 of the rotary automatic packaging machine 12, There is a possibility that the clamp 27 cannot normally grip the packaging bag 13.

Further, as shown in FIG. 7, when the uppermost packaging bag 13 happens to be bent downward, the belts 14 and 24 are kept until the lower packaging bag 13 comes into contact with the stopper 16 and the sensor detects it. Does not stop rotating. In this case as well, as described with reference to FIG. 6, the packaging bag 13 does not reach the stopper 16 and does not come into contact therewith, so that the suction means 25 has a distance from the bag mouth of the packaging bag 13 to the suction position. Since it has shifted | deviated from predetermined, there exists a possibility that the said clamp 27 may not grasp the said packaging bag 13 normally.

The present invention has been made in view of such a problem, and an object thereof is to provide a packaging bag supply device 11 capable of accurately transporting the uppermost packaging bag 13 to a predetermined position where the uppermost packaging bag 13 is in contact with a stopper 16.

The packaging bag supply device of the present invention conveys a belt conveyor on which packaging bags arranged in a column so as to tilt backward in the feeding direction, and the packaging bag placed on the belt conveyor while being pressed by a feeding belt. Moves up and down between a feeding device, a stopper for contacting the packaging bag in front of the belt conveyor in the feed direction, a lowered position for sucking the packaging bag in contact with the stopper, and a raised position for lifting the sucked packaging bag A packaging bag supply device comprising: a suction means , wherein the suction means sucks and lifts the uppermost packaging bag at a lowered position so that a lower packaging bag of the uppermost packaging bag can advance. Patent that the gap is stopped at an intermediate position between the lowered position and the raised position as vacant, the belt conveyor and feeding belt as packaging bag of the lower advances the stopper side to rotate To.

According to the present invention, the uppermost packaging bag can be accurately fed into the stopper by the above configuration.

Side view of packaging bag feeder Partial enlarged view of packaging bag supply device Top view of a packaging machine equipped with a packaging bag feeder Action explanatory diagram of packaging bag supply device Partial enlarged perspective view of packaging bag supply device Partial enlarged view of a conventional packaging bag supply device Partial enlarged view of a conventional packaging bag supply device

Since the basic configuration is the same as that described in the background art, the same reference numerals will be used in the drawings, and differences will be mainly described. As shown in FIG. 5, the suction means 25 is supported by the support bar 41 fixed to the arm 40, and the arm 40 is pivotally supported by the rotating shaft 42. As described in the background art, the suction means 25 can be moved up and down by the rotation of the rotation shaft 42 connected to a drive source (not shown).

In the present invention, the rotation of the rotation shaft 42 by the drive source (not shown) can be stopped at an intermediate position in addition to the raised position and the lowered position of the suction means 25. The drive source may be any means such as a cam, a servo motor, or a cylinder as long as it can be stopped at the raised position, the lowered position, and the intermediate position.

The intermediate position will be described in detail. The suction means 25 sucks the uppermost packaging bag 13 in the lowered position, and the sucked uppermost packaging bag 13 is moved to the lower packaging by the rotation of the belts 14 and 24. This is the position where the suction means 25 is lifted from the lowered position so that there is a gap enough to advance the bag.

Even when the lower packaging bag 13 having the upward curved curvature shown in FIG. 6 is advanced with the suction means 25 that has sucked the uppermost packaging bag 13 in the intermediate position, the upper end of the stopper 16 is reached. The lower packaging bag 13 does not get over the stopper 16 because the lower side of the packaging bag 13 is adsorbed by the adsorption means 25. In addition, as described above, since the uppermost packaging bag 13 is lifted only to a small extent, the lower packaging bag 13 with the curved wrinkles is in a state where the belts 14 are stretched straight. 24, the lower packaging bag 13 in the state of being straightly extended stops at a predetermined position determined by the stopper 16.

In addition, even when the lower packaging bag 13 having the curved ridges is advanced in the intermediate position, the packaging bag 13 to which the suction means 25 is adsorbed is located above the lower packaging bag 13. Therefore, since the lower packaging bag 13 is in a state of being straightly extended with its top and bottom being restricted, it can be stopped at a predetermined position determined by the stopper 16.

Next, the operation will be described with reference to FIGS.
(A)
The arm 40 is rotated by the rotation of the rotation shaft 42, and the suction means 25 supported by the support bar 41 fixed to the arm 40 starts to move from the raised position to the lowered position.
(B)
The suction means 25 moved to the lowered position sucks the uppermost packaging bag 13 and starts moving to the intermediate position.
(C)
The suction means 25 moved to the intermediate position stops. After the suction means 25 lifts the uppermost packaging bag 13, the advancement of the lower packaging bag 13 of the uppermost packaging bag 13 is started by the rotation of the belts 14 and 24. FIG. 4C shows an intermediate position in which the packaging bag 13 is extremely lifted by the suction means 25 for easy understanding. In this case, there is no problem, but the intermediate position is preferably such that the lower packaging bag can be advanced without bending as described above.
(D)
The lower packaging bag 13 moves forward and comes into contact with the stopper 16 and stops. The suction means 25 starts moving to the raised position.

Moreover, although the feeding direction front of the packaging bag supply device 11 is the bag mouth portion of the packaging bag 13 and the feeding direction rear side of the packaging bag supply device 11 is the bag bottom portion of the packaging bag 13, the mounting direction of the packaging bag 13 has been described. Depending on the type of the rotary automatic packaging machine, the loading direction may be reversed in the front and back direction or lie down, and such a case is also included in the present invention. Moreover, although the rotary type automatic packaging machine 12 was demonstrated to the packaging machine, the packaging machine does not need to be the rotary type automatic packaging machine 12, and even if it is a packaging machine which packages a packaging bag while conveying linearly, Good.

The present invention is useful in a packaging bag supply apparatus that supplies a large number of packaging bags on a belt conveyor to, for example, a rotary automatic packaging machine.

11. Packaging bag supply device 12. Rotary automatic packaging machine 13. Packaging bag 14. Belt conveyor 15. Feeding device 16. Stopper 21. Intermediate pulley 22. Tip pulley 24. Feed belt 25. ..Adsorption means

Claims (2)

A belt conveyor for placing packaging bags arranged in a row so as to tilt backward in the feeding direction, a feeding device for feeding the packaging bags placed on the belt conveyor while pressing them with a feeding belt, and feeding the belt conveyor A packaging bag comprising: a stopper that abuts the packaging bag forward in the direction; and a suction unit that moves up and down between a lowered position that sucks the packaging bag that is in contact with the stopper and a raised position that lifts the sucked packaging bag A feeding device,
The adsorbing means adsorbs the uppermost packaging bag at the lowered position and rises, and the lowering position and the raised position are spaced so that a gap is formed so that the lower packaging bag of the uppermost packaging bag can be advanced. The packaging bag supply device , wherein the belt conveyor and the feeding belt rotate so that the belt conveyor stops and the lower packaging bag advances toward the stopper side . The packaging bag supply device according to claim 1, wherein the intermediate position is a position where the uppermost packaging bag adsorbed by the adsorbing means is below the upper end of the stopper .

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