JP2012030838A - Continuous bag box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a continuous bag box capable of preventing a bag feeding loss (a process wherein bags can not be supplied to a main machine) in a bag feeding device which supplies the bags to a packaging device.SOLUTION: In the continuous bag box, double-type bag boxes are 4 arranged side by side, main suckers for sucking one end of the bag are attached to each leading end of bag boxes 4, corresponding to each bag box 4A, 4B, respectively, and an oscillating-link mechanism for oscillating the main suckers is provided. The double-type bag box 4 is capable of moving horizontally. The continuous bag box includes a horizontal moving mechanism which wholly moves the double-type bag box 4 when either of the bag boxes runs out of the bags, and transfers the bag box having the bags left to a bag transferring position.

Description

  The present invention relates to a continuous bag box for storing bags in order to continuously transfer empty bags to a rotary packaging device via a transfer device, and more specifically, to a duplex bag storing empty bags. The present invention relates to a continuous bag box that continuously transfers a bag from a bag box to a clamp arm of a rotary packaging device without interruption.

(Conventional technology)
In a continuous bag feeder that supplies bags made to a rotary packaging machine, if many bags can be stocked in the bag box (magazine) that sets the bags, it will be time to supply the bags and stop the bag supply at the time of supply. Can be reduced and productivity can be improved.

However, depending on the form and nature of the bag, some bags cannot be stocked in large quantities. For example, the bag which collapse | crumbles when many are piled up like a stand pack, a backpack bag, a poly tube bag, etc. are mentioned.

For this reason, it was devised that multiple (usually two sets) bag boxes are interlocked, and the bags are prepared in a different bag box from the side supplying the bags to this machine (rotary packaging machine). The supply method is such that even if the bags run out, the machine is switched to the other bag box automatically or manually without stopping the machine. (See Patent Document 1)

Further, the multistage feeding device for bags disclosed in Patent Document 2 below is installed at a constant interval on the feed conveyor that rotates intermittently on an endless track, and the upper surface on which the bag is placed is inclined forward. A plurality of divided bag bases formed and a sucker that picks up the bags on the divided bag bases one by one at the feed conveyor end position and supplies them to the next process.

JP 2008-302965 A JP-A-7-2225

  However, in the former bag feeding method, if the movement of the sucker for bag feeding is not stopped during the switching process, it interferes with the side plate (bag regulating plate) of the bag box. Therefore, it is necessary to provide a device for interrupting the drive path of the sucker for bag supply during the switching process (while the bag box is moving), and to reconnect the drive after the movement is completed. In this case, if the capacity increases, the bag box moving process cannot catch up, and a bag supply loss (a process in which the machine cannot supply bags) occurs, resulting in a significant reduction in work efficiency.

Furthermore, since the multistage feeding device for bags of Patent Document 2 also requires time from the time when the bag is lost until the belt conveyor is moved intermittently, if the speed of the packaging device body is high, the supply of the bag is It happens that it cannot catch up.

As described above, during the bag box switching process or during the intermittent movement of the conveyor, the driving of the sucker for bag supply is cut off, and the loss caused thereby hinders the improvement of work efficiency. The present invention proposes the following method for the purpose of preventing the loss.

  In the continuous bag box of the present invention, two or more bag boxes are arranged side by side, and a suction cup for adsorbing one end of the bag is attached to the tip of the bag box corresponding to each bag box. A continuous bag box provided with a rocking link mechanism for rocking the suction cup, wherein the plurality of bag boxes are horizontally movable, and any of the plurality of bag boxes is out of bags. Then, a plurality of continuous bag boxes move together, and a horizontal movement mechanism is provided for moving a bag box that is not out of bags to a bag delivery position.

  The continuous bag box of the present invention can continuously deliver a bag from a plurality of continuous bag boxes containing empty bags during the bag box switching process without interruption to the packaging device.

Front view of the continuous bag box of the present invention Plan view of the continuous bag box of the present invention Side view of continuous bag box of the present invention Rear view of continuous bag box of the present invention

  Hereinafter, the present embodiment will be described with reference to the drawings. 1 is a front view of a continuous bag box of the present invention, FIG. 2 is a plan view, FIG. 3 is a side view, and FIG. 4 is a rear view. As shown in FIG. 2, a continuous bag box 2 is disposed adjacent to the rotary packaging device 1, and empty bags are transferred from the continuous bag box 2 to the rotary packaging device 1 via the delivery mechanism 3. It has been handed over. Since the rotary packaging device 1 and the delivery mechanism 3 are the same as the conventional one, a detailed description is omitted.

In the continuous bag box 2 of the present embodiment, the double bag box 4 is arranged side by side on the control box 5, and the double bag box 4 and the control box 5 can be slid simultaneously in the horizontal direction. ing. When one bag box 4A becomes empty, the double bag box 4 and the control box 5 slide together, and the other bag box 4B is switched to the delivery position of the delivery mechanism 3, and the delivery mechanism 3 uses the rotary packaging device. 1 can be supplied without delay, and bag supply can be carried out continuously.

Each of the double bag boxes 4 has a large number of bags stacked on the top surface of the shelf board 6 in the same manner as the conventional bag box, and the lateral stack of the bags stacked on both sides of the shelf board 6 is prevented. Side plates 7 are erected. In accordance with the size of the bag, the handle 8 provided on the side of the double bag 4 is rotated to adjust the distance between the side plates 7.

Further, a stopper wall 9 is erected at the tip of one and the other bag boxes 4A and 4B so that the tip of the bag does not protrude. Furthermore, a bar-shaped level sensor 10 is arranged in the width direction slightly inside the tips of the bag boxes 4A and 4B. The level sensor 10 is always on the upper surface of the bag. When the level of the bag decreases and the level sensor 10 descends and approaches the sensor 11, a refilling warning is issued.

Further, the shelf plate 6 is a shelf plate corresponding to the reduced number of bags when the number of stacked bags in the bag boxes 4A and 4B is reduced by the lift mechanism 12 disposed below the one and other bag boxes 4A and 4B. 6 rises so that a suction error of the bag is not generated by a suction cup described later.

A main suction cup 14 that swings up and down by a swing link mechanism 13 in the up and down direction and sucks and lifts up the top of the bag is disposed at the upper end side of the double bag box 4. A sub-suction cup 15 that adsorbs and lifts the lower part of the bag is disposed. An air hose (not shown) for suction is connected to each of the suction cups 14 and 15, and a negative pressure is applied so that the bag can be adsorbed or released.

Further, a cylindrical air injection cylinder 16 is attached in the upper width direction of the stopper wall 9. Further, behind the sub suction cup 15, an air injection nozzle 17 is disposed at the rear of each bag box.

The main suction cup 14 has four fixed blocks 19 fixed to a guide bar 18 in which two bars having approximately the same length as the width of the double bag 4 are arranged in parallel. The main suction cup 14 is attached downward. Each fixed block 19 is fixed at a position corresponding to the side plate 7 of the guide bar 18, and this fixed block 19 is formed with a vertical slit in the same direction as the side plate 7, and this slit is the front side of the side plate 7. It fits in the upper part and slides along the upper part of the side plate 7 to swing up and down while drawing an arc.

As shown in FIG. 3, the central portion of the guide rod 18 is pivotally supported between the upper portions of the central partition wall 20 via an L-shaped small plate 21, and the protruding end of the small plate 21 moves up and down the main suction cup 14. It is joined to a swing link mechanism 13 that swings at a distance. The swing link mechanism 13 will be described with reference to FIGS. A drive motor 22 is provided at the lower left of FIG. 4. The rotational motion of the drive motor 22 is converted into a rotational motion by a cam, and this rotational motion is converted to an intermediate shaft by a rotational lever 23 and a vertical rod 24. It is transmitted to a long horizontal rocking lever 26 that is pivotally supported by 25. This oscillating motion of the horizontal oscillating lever 26 is further transmitted to the small plate 21 by a long rod 27 in the vertical direction. By swinging the long rod 27, the main suction cup 14 rises while sucking and rotating the bag via the small plate 21 and the guide rod 18, so that when the clip 3A of the delivery mechanism 3 finishes picking up the bag, the rotation shaft The bag is delivered to the clamp arm 1A of the rotary packaging machine 1 by rotating around 3B.

Note that the lower end engaging portion 28 of the long rod 27 engaged with the horizontal swing lever 26 is engaged with the lower end of the long rod 27 even when the double bag 4 is moved in the horizontal direction, as will be described later. Since the part 28 slides in the horizontal direction while being locked to the horizontal swing lever 26, the long rod 27 also moves horizontally together with the double bag box 4.

Next, the horizontal movement mechanism 29 of this embodiment will be described.
As described above, the double bag box 4 is attached to the upper portion of the control box 5 so as to be inclined toward the delivery mechanism 3 (see FIG. 3). Further, the control box 5 is supported by a horizontal main rod 30 and a horizontal sub rod 31 so as to be horizontally movable. A pillow type shaft unit 33 is attached to a mounting plate 32 on the back wall of the control box 5, and the horizontal main rod 30 is inserted through the pillow type unit 33. Further, a guide 34 is locked to the mounting plate 32 from above, and this guide 34 is supported by the horizontal sub rod 31 to support the control box 5 in a horizontally movable manner together with the pillow type shaft unit 33. Yes.

The control box 5 is moved horizontally by a horizontal movement mechanism 29. The horizontal movement mechanism 29 will be described with reference to FIGS. The rotational motion of the gear motor 35 is converted into a rotational motion in the forward and reverse directions. This turning motion is converted into a turning motion in the left-right direction of the turning lever 39 by the rotating shaft 38 by the horizontal rod 36 and the rod 37. The tip of the rotation lever 39 is joined to the mounting plate 41 via the connecting rod 40. The control box 5 slides in the left-right direction while being supported by the horizontal main rod 30 and the horizontal sub rod 31 by the rotation of the rotation lever 39.

Next, the movement of the continuous bag box when the bag of one bag box 4A of the double bag box 4 becomes empty will be described. The fact that the bag packed in one bag box 4A has become empty is quickly detected by the transmission of light from an optical sensor (not shown). That is, when the last bag remaining in one bag box 4A is sucked by the main suction cup 14 and the sub suction cup 15 and delivered to the delivery mechanism 3, the difference in light transmission from the optical sensor when the bag is present and when it is absent. By this, it is detected that there is no bag in one bag box 4A. Based on the signal from the optical sensor, the controller determines that one of the bag boxes 4A is out of the bag state, operates the horizontal movement mechanism 29, and the controller moves the double bag box 4 and the control box 5 horizontally.

The main suction cups 14 and the like are provided in the double bag boxes 4 respectively, and the lower end engaging portion 28 of the long rod 27 is also moved while the double bag box 4 is slid after the one of the bag boxes 4A is detected by the optical sensor. Slid in the horizontal direction while being engaged with the horizontal swing lever 26, so that the main suction cup 14 and the sub suction cup 15 of the bag box can move the bag by adsorbing the bag and moving the bag box. The bag supply loss can be prevented by the work inside. Further, as described above, one empty bag box 4A is filled with a bag by an operator to prepare for the next operation.

In the above embodiment, the bag box is the double bag box 4, but it may be a triple or quad bag box. Needless to say, the link mechanism 13 and the like may also have the same function.

The present invention is useful in, for example, continuously delivering bags by using the bag supply device of a rotary packaging device.

DESCRIPTION OF SYMBOLS 1 Rotary type packaging apparatus 1A Clamp arm 2 Continuous type bag box 3 Delivery mechanism 3A Clip 3B Rotating shaft 4 Double bag box 4A One bag box 4B The other bag box 5 Control box 6 Shelf board 7 Side plate 8 Handle 9 Stopper wall 10 Level sensor 11 Sensor 12 Lift mechanism 13 Swing link mechanism 14 Main suction cup 15 Sub suction cup 16 Air injection cylinder 17 Air injection nozzle 18 Guide rod 19 Fixed block 20 Central partition wall 21 Small plate 22 Drive motor 23 Rotating lever 24 Vertical rod 25 Middle Shaft 26 Horizontal rocking lever 27 Long rod 28 Lower end engaging portion 29 Horizontal moving mechanism 30 Horizontal main rod 31 Horizontal sub rod 32 Mounting plate 33 Pillow type shaft unit 34 Guide 35 Gear motor 36 Horizontal rod 37 Rod 38 Rotating shaft 39 Rotating lever 40 Connecting rod 41 Installation Plate 42 Air filter

Claims (3)

In order to swing the suction cups, two or more multiple bag boxes are provided side by side, and suction cups that adsorb one end of the bag are individually provided at the tip of the multiple bag boxes. A continuous bag box having a swing link mechanism of
The plurality of continuous bag boxes can be moved horizontally, and when any of the multiple continuous bag boxes runs out of bags, the multiple continuous bag boxes move together to bring the unboxed bag boxes into the bag delivery position. A continuous bag box provided with a horizontal moving mechanism for moving. A part of the swinging mechanism for swinging the suction cup is a swinging mechanism that is movable along with the horizontal movement of a plurality of bag boxes and does not interfere with the swinging of the suction cup. The continuous bag box according to claim 1. A part of the swing mechanism is a long rod, and the lower end engaging portion of the long rod is locked to a horizontal swing lever that is long in the horizontal direction even while a plurality of bag boxes slide. The continuous bag box according to claim 2, which slides in a horizontal direction.

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