JP5305468B2 - Palletizer for bags - Google Patents

Description

  The present invention relates to a bag palletizer that continuously stacks a plurality of bags containing powdered particles on a carrier such as a pallet or a cart.

  Conventional palletizers are disclosed in Patent Documents 1 to 3. The technique described in Patent Document 1 is characterized by comprising a lifting device that lifts and lowers the cart and a back plate that pushes and aligns the articles being transferred from the conveyor to the cart. The technique described in Patent Document 2 is characterized by comprising a gripping means that drops and stacks the gripped bag and a pressing means that presses the upper surface of the article and dents it slightly by the time of stacking. The technique described in Patent Document 3 is characterized by comprising a holding unit that holds a plurality of bags sandwiched from both sides, and a pushing unit that pushes the aggregate of the held bag items downward and packs them.

  By the way, in the technique described in Patent Document 1, the stacking position can be aligned at a fixed position with a back plate. However, in the case where the article is a bag containing powdered particles, the stored items are transferred from the conveyor to the cart. In some cases, the end portion swells due to the inertia, and the bag to be stacked next collapses or slides down and collapses. According to the technique described in Patent Document 2, the bag to be stacked next does not become unstable due to the dent, but the bag or the contained item may be damaged when the bag is dropped or formed. In the technique described in Patent Document 3, deformation can be suppressed by pinching, but when it has weight, it is necessary to pinch it with a strong force, and the bag or the stored item may be damaged as in the technique of Patent Document 2.

JP 2004-299846 A JP-A-8-217245 JP 2000-95204 A

  The problem to be solved by the present invention is to solve these conventional problems and to provide a bag palletizer that can be stacked in a stable state without damaging easily deformable bags.

The configuration of the present invention that solves this problem is as follows.
1) a plurality of bags which particulate material is accommodated in the carrier of the pallet or carts a continuously variable loading to bags for palletizers, and conveyor for conveying a plurality of bags, from the end of the conveyor The transfer plate that moves forward and backward between the transfer point of the bag and the carrier, and when the bag is transferred to the transfer plate, the transfer plate is pushed from behind to assist and then moves forward with the transfer plate to the carrier. is a bag and the pressing plate but to retract after being transferred onto a pause vehicles by pressing the back of the pouches in the time of retreat, a driving device for advancing retreat operated shift placing plate and the pressing plate, the carrying device A palletizer for bags 2 characterized by comprising an elevating device that raises to a height position at which it can be transferred and then lowers it one step at a time each time the bags are stacked. Carrier from both sides 1) The bag palletizer as described in 1) above, which is provided with a width adjusting device that approaches the width that can be stacked. 3) A vibration device that vibrates the upper surface of the uppermost bag stacked on the carrier and leveles it horizontally. The palletizer for bags according to 1) or 2) described above.

According to the bag palletizer of the present invention, stacking is performed by the following operation.
1) Raise the lifting device to a height position where the carrier can be transferred.
2) A conveyor conveys a plurality of bags.
3) The bag is transferred from the conveyor to the transfer plate. At that time, the pressing plate assists by pushing from behind.
4) The transfer plate on which the bag is placed advances together with the holding plate to the transporter.
5) The transfer plate starts to retract. At that time, the holding plate temporarily stops and presses backward so that the bag is not retracted together. While the transfer plate is retreating, the bag is slid on the transfer plate by the holding plate, and the bag is grounded to the carrying tool in order from the front end. When the transfer plate is fully retracted, the bag is completely separated from the transfer plate and stacked on the carrier, and the holding plate is retracted. Bags are gently stacked without impact during transfer, and the contents do not move due to inertia.
6) The lifting device lowers the carrier for the next stacking.
7) The steps 2) to 6) are repeated until a predetermined number of stages are stacked.
As described above, according to the present invention, it is possible to stack the bag which is easily deformed in a stable state without damaging the bag as compared with the prior art.

  Moreover, according to the structure provided with the width adjusting device, in the case of a carrier such as a cart in which the stacking width is limited, the left and right ends of the bag can be stacked without being caught. In addition, according to the configuration provided with the vibration device, the undulation on the upper surface of the bag is leveled by the vibration, and the inclination and slipping of the bag to be stacked next are surely prevented, so that the bag can be loaded in a more stable state. it can.

It is a side view of the palletizer for bags of an Example. It is a top view of the palletizer for bags of an Example. It is a front view of the palletizer for bags of an Example. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. It is explanatory drawing which shows formation and width adjustment of the aggregate | assembly of the bag of an Example. It is explanatory drawing which shows the packing of the bag of an Example. It is explanatory drawing which shows the packing of the bag of an Example.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be specifically described based on examples and drawings.

  The embodiment shown in FIGS. 1 to 8 is an example of a bag palletizer in which a collection of bags made of four rice bags is stacked on a cart. 1 is a side view of the bag palletizer of the embodiment, FIG. 2 is a plan view of the bag palletizer of the embodiment, FIG. 3 is a front view of the bag palletizer of the embodiment, and FIG. FIG. 5, FIG. 5 is a cross-sectional view taken along the line BB of FIG. 1, FIG. 6 is an explanatory view showing the formation and width adjustment of the bag assembly of the embodiment, and FIGS. FIG.

  In the figure, 1 is a frame, 2 is a conveyor, 3 is a width adjusting device, 3a is a cylinder, 4 is a transfer plate, 4a is a rail, 4b is a moving frame (drive device), 4c is a motor, 4d is a drive roller, 4e is a driven roller, 4f is a chain, 4g is a stopper, 5 is a holding plate, 5a is a rail, 5b is a moving frame (driving device), 5c is a motor, 5d is a driving roller, 5e is a driven roller, 5f is a chain, 5g Is a stopper, 6 is a lifting device, 6a is a mast, 6b is a receiver, 6c is a motor, 7 is a vibration exciter, 7a is a leveling plate, 7b is a vibrator, 8 is a cart (carrying device), 8a is a frame, 9 Is a feed conveyor, 10 is an entry stopper, 11 is a row changing device, 11a is a stopper, 11b is an extrusion plate, and a is a bag.

  As shown in FIGS. 1 to 5, the left and right width adjusting devices 3 are bent at the rear end portion so as not to catch the bag a that has entered, and are attached to the intermediate position of the transport conveyor 2 so as to be advanced and retracted by the cylinder 3 a. Yes. During normal times, it stops at a position that is larger than the width of the aggregate of the bags a, and when the entry of the bag a between the width adjusting devices 3 is detected, it advances simultaneously until the distance between the frames 8a of the cart 8 becomes slightly smaller. After that, it is controlled to move back to the original position. The conveyor 2 is always operated during normal times, and is controlled so as to be temporarily stopped when the width adjusting device 3 is advanced or retracted. The width adjusting device 3 may be attached only to either the left or right side, and a stopper may be attached to the opposite side so that the width can be adjusted by pressing from one side.

  The transfer plate 4 is narrower than the space between the frames 8 a of the cart 8 and has a width on which the aggregate of the bags a can be placed. The transfer surface is placed on the moving frame 4 b on the rail 4 a and the transfer surface is slightly more than the transfer surface of the transfer conveyor 2. It is suspended so that it is in a low position. The moving frame 4b is fixed at an intermediate position of the chain 4f that is hung forward and backward on the frame 1, and can move forward and backward by forward and reverse rotation of the motor 4c. The stopper 4g supports the bag a so that it does not protrude from the cart 8 during transfer. During normal times, it stops at the end position of the conveyor 2, moves forward when it detects the transfer of the bag a from the conveyor 2, gradually decelerates, stops at the position on the cart 8, and then moves back to the original position. To be controlled.

  The holding plate 5 is formed to have a width narrower than the interval between the side walls of the transfer plate 4, both ends are pivotally supported in a vertical state, and are suspended from the moving frame 5 b on the rail 5 a. The moving frame 5b is fixed at an intermediate position of the chain 5f that is hung forward and backward on the frame 1, and can move forward and backward independently of the moving frame 4b while diving under the moving frame 4b by forward and reverse rotation of the motor 5c. It has become. The pressing plate 5 rotates in the conveying direction, but is configured to be stopped by a stopper 5g in the opposite direction from the vertical posture. When it is normal, it stops at the rear end position of the width adjusting device 3 and when the completion of the operation of the width adjusting device 3 is detected, it moves forward at the same speed as the transfer speed of the transfer conveyor 2 and the transfer plate 4 reaches the position on the cart 8. Control is performed so as to temporarily stop at that position and to move back to the original position after the transfer plate 4 has been moved backward.

  The elevating device 6 is configured such that a receiving member 6b hooked to the lower portion of the cart 8 is movable up and down along the left and right masts 6a by a motor 6c. During normal times, the receiving device 6b stops at the lowest position, and when the carrying of the cart 8 is detected, the receiving device 6b rises and is hooked on the lower portion of the cart 8, and further rises so that the loading surface of the cart 8 is the transfer plate. 4 is stopped at a height that is slightly lower than the transfer surface, and when the backward movement of the pressing plate 5 is detected, it is slightly raised and stopped at that position for a few seconds. Thereafter, the next loading surface is transferred to the transfer plate. It is controlled to descend to a height slightly lower than the transfer surface 4 and stop, and to descend to the lowest position when a predetermined number of stacks are detected.

  The vibration device 7 has a vibrator 7b attached immediately above the carry-in position of the cart 8, and a smooth leveling plate 7a is horizontally attached to the lower surface of the vibrator 7b. The leveling plate 7a is arranged at a position higher than the transfer surface of the transfer plate 4, and when the leveling plate 7a is pressed from below, the leveling plate 7a moves slightly together with the vibrator 7b and can be buffered. In normal times, the vibrator 7b is stopped, and when the pressing to the leveling plate 7a is detected, the vibrator 7b vibrates, and when the cancellation of the pressing is detected, the vibrator 7b is controlled to stop. The leveling plate 7a and the vibrator 7b may be configured to be movable up and down so that the leveling plate 7a can be lowered and applied to the upper surface of the bag a without vibrating the cart 8 during vibration.

  The cart 8 is provided with a frame 8a on the left and right sides for preventing the stacked bag a from dropping, and the lower surface has a shape on which the receiving member 6b of the lifting device 6 can be hooked. In addition, as shown in FIG. 6, a supply conveyor 9 that supplies one bag of bags a at a time, and an entry that temporarily restricts entry of the supplied bag a every four bags, as shown in FIG. A stopper 10 and a column changing device 11 that stops the four bags a that have entered the stopper 10a and pushes them in a right-angle direction by an extrusion plate 11b are provided.

  Hereinafter, the stacking of the bag a will be described with reference to FIGS. When the bag a of the supply conveyor 9 enters the row switching device 11, an aggregate of four bags in a horizontal row is formed and pushed out and continuously conveyed by the conveyor 2. When the cart 8 is carried into the elevating device 6, it is lifted to the transfer position and stopped. As shown in FIG. 7 (a), the bag a pushes up the presser plate 5 and passes, and as shown in FIG. 7 (b), when entering between the left and right width adjusting devices 3, the conveyor 2 stops, The width adjusting device 3 advances and presses the left and right ends of the bag a as shown in FIG. Thus, even if the width of the aggregate of the bags a exceeds the interval between the frames 8a of the cart 8, the width can be set in advance.

  As shown in FIG. 7 (c), when the width adjusting device 3 moves backward and the transport conveyor 2 resumes operation, the pressing plate 5 moves forward and the bag a is transferred to the transfer plate 4 and pushed from behind to assist. To do. As shown in FIG. 7 (d), when the transfer plate 4 moves forward to a position on the cart 8 together with the holding plate 5, and stops, only the transfer plate 4 moves backward as shown in FIG. 8 (a). The presser plate 5 presses the back of the bag a while being temporarily stopped at that position. While the transfer plate 4 is retracted, the bag a is pressed by the holding plate 5 and slides on the transfer plate 4 and is left in contact with the cart 8 in order from the front end. As shown in FIG. 8B, when the transfer plate 4 is completely retracted, the bag a is completely separated from the transfer plate 4 and stacked on the cart 8, and the holding plate 5 is retracted to the original position. As a result, the bag a is gently stacked without impact. In addition, the contents do not move due to inertia, and there is no damage to the bag or the contents.

  As shown in FIG. 8C, when the lifting device 6 lifts the cart 8 and the bag a presses the vibration device 7, the upper surface of the bag a is vibrated. As shown in FIG. 8D, when this state elapses for several seconds, the lifting device 6 lowers the cart 8 and stops at the height of the next loading surface, and when the release of the pressure is detected, the vibration device 7 stops. To do. Accordingly, even if the bag a has an undulation on the upper surface, the bag a is leveled horizontally, and the bag a to be stacked next can be more reliably prevented from being tilted or slipped, and there is no damage to the bag or the contents.

  In this manner, the steps of FIGS. 7A to 8D are repeated until the bag a is stacked on the cart 8 in a predetermined number of steps. When the predetermined number of stages are stacked, the lifting device 6 lowers the cart 8 to the lowest position and is carried out.

  The technology of the present invention accommodates granular materials such as food such as rice, flour, sugar and salt, construction materials such as cement, lime and perlite, and horticultural materials such as soil, fertilizer, goro stone and bark. This is useful for stacking open bags. It is also useful for stacking not only bags but also boxes.

DESCRIPTION OF SYMBOLS 1 Frame 2 Conveyor 3 Alignment device 3a Cylinder 4 Transfer plate 4a Rail 4b Moving frame (drive device)
4c motor 4d driving roller 4e driven roller 4f chain 4g stopper 5 holding plate 5a rail 5b moving frame (driving device)
5c Motor 5d Drive roller 5e Driven roller 5f Chain 5g Stopper 6 Lifting device 6a Mast 6b Receiving tool 6c Motor 7 Exciting device 7a Leveling plate 7b Vibrator 8 Cart (Carrier)
8a frame 9 supply conveyor 10 entry stopper 11 row switching device 11a stopper 11b extrusion plate a bag

Claims (3)

A bags for palletizer for stacking continuous stage a plurality of bags which particulate material is accommodated in the carrier of the pallet or carts, bags of a conveyor for conveying a plurality of bags, from the end of the conveyor The transfer plate that moves forward and backward between the transfer point and the carrier, and when the bag is transferred to the transfer plate, it is pushed from behind to assist and then moves forward with the transfer plate to the carrier and the transfer plate retracts. a driving device and a pressing plate, to advance withdrawal operated shift placing plate and the pressing plate retreats after being transferred onto the pressing the rear carrier of bags paused when, bags and carrying device is transferred A palletizer for a bag, characterized in that the bag palletizer is composed of a lifting device that raises the bag to a height position where it can be moved and then lowers the bag by one step each time the bag is stacked.   The bag palletizer according to claim 1, further comprising a width adjusting device that presses the bag on the conveyor from either the left or right side to a width that allows the bag to be stacked on the carrier. The bag palletizer according to claim 1 or 2, further comprising a vibrating device that vibrates an upper surface of the uppermost bag stacked on the carrier to level it horizontally.

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