JP2007204174A - Destacking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To certainly grip and destack without dropping when an assembly of upper stage box bodies are separated from lower stage box bodies after they are gripped. <P>SOLUTION: A plurality of box bodies for storing the articles are horizontally arranged such that they are contacted with each other and are assembled to make an assembly of one stage such that the whole of them becomes rectangular. A lifting base for raising a group of box bodies in which the assembly are piled up is provided and a gripping device for gripping the uppermost stage of the group of box bodies raised to an upper side of the lifting base and transferred in a lateral direction is provided. A conveying conveyor for conveying the gripped assembly of box bodies of one stage to a transfer side of the gripping device is provided. The gripping device is provided with a plurality of grip plates for gripping the assembly of box bodies of one stage from four side surfaces while opposed to them, and has an advancement/retreating mechanism for performing gripping and releasing of gripping by horizontally advancing/retreating relative to a box body direction on the grip plate. A grip surface of the grip plate is made into a structure that the surface is a flat surface and is inclined relative to a vertical line such that an upper side distance between the opposed grip plates becomes larger than a lower side. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  In the present invention, a plurality of boxes containing articles are arranged horizontally so that they are in contact with each other and combined into a rectangular shape as a whole. The present invention relates to a spreading device for grasping and separating.

  Conventionally, as a destacking device for separating a group of boxes stacked in multiple stages from the upper stage, a lifting platform for raising the stacked boxes has been provided, and the uppermost stage of the box group raised above the lifting platform is provided. Patent Documents 1 to 3 disclose a structure in which a gripping device that grips and moves in the horizontal direction is provided, and a transport conveyor that transports the one-stage assembly gripped at the transition destination of the gripping device is provided. The gripping devices of these technologies include a plurality of gripping plates that grip a single-stage assembly from four side surfaces, and the gripping plates are configured to advance and retreat in the box direction to perform gripping and release of gripping.

By the way, since the gripping plate of the technique is arranged so that the gripping surface is vertical, when the upper assembly is gripped and then separated from the lower box, the deformation of each box of the gripped assembly is performed. Depending on the degree and the overall package, there was a problem that the box could fall due to a decrease in frictional resistance and could not be gripped.
Japanese Examined Patent Publication No. 1-2668 JP 7-196109 A JP-A-2005-34969

  The problem to be solved by the present invention is to solve these conventional problems, and when the upper box body is gripped and then separated from the lower box, the deformation of each box of the gripped body An object of the present invention is to provide a leveling device that can be securely gripped without falling even when the degree and frictional resistance are lowered.

The configuration of the present invention that solves this problem is as follows.
1) A lifting platform for assembling a plurality of boxes containing articles in a horizontal arrangement so that they are in contact with each other so as to form a rectangular shape as a whole, and ascending the box group in which the aggregates are stacked A gripping device that grips the uppermost stage of the box group raised above the lifting platform and moves in the horizontal direction is provided, and a transport conveyor that transports the one-stage assembly gripped at the transfer destination of the gripping device is provided The gripping device includes a plurality of gripping plates for gripping a single-stage assembly from four side surfaces, and the gripping plate is advanced and retracted horizontally with respect to the box direction. It has an advancing / retreating mechanism for releasing gripping, and the gripping surface of the gripping plate is a flat surface and is inclined obliquely with respect to the vertical so that the upper distance between the opposing gripping plates is larger than the lower side. And staggering device 2) The inclination angle of the gripping plate is 0.5 to 2 °. 1) The leveling device described in 1) 3) A separation conveyor for separating the one-stage assembly conveyed to the conveyance destination of the conveyance conveyor for each row is provided, and the row of boxes separated to the conveyance destination of the separation conveyor is orthogonal 1) or 2), which is provided with a row conveyor for feeding in a direction.

  According to the present invention, the gripping surface of the gripping plate is inclined with respect to the vertical so that the upper distance between the opposing gripping plates is larger than the lower side. It is possible to maintain the gripping by preventing falling without being caught by the lower part of the plate and being deformed by applying an excessive pressing force.

  You may enable it to change the pressing force of the holding | grip board of this invention according to a package appearance. The inclination angle of the gripping plate is preferably 1 °, but can be changed in the range of 0.5 to 2 ° in consideration of the size and deformation of the box. Embodiments of the present invention will be specifically described below with reference to the drawings.

  The embodiment shown in FIGS. 1 to 7 is an example of equipment for sending out a multi-stage cardboard box group placed on a pallet separately. FIG. 1 is a layout diagram of equipment incorporating the spreading device of the embodiment, FIG. 2 is an explanatory diagram of the spreading device of the embodiment, FIG. 3 is a plan view of the gripping device of the embodiment, and FIG. 4 is a gripping device of the embodiment. FIG. 5 is an explanatory view of the gripping plate of the embodiment, and FIGS. 6 and 7 are explanatory views showing the steps of the embodiment.

  In the figure, 1 is a spreading device, 1a is a frame, 1b is a rail, 2 is a lifting platform, 3 is a gripping device, 3a is a frame, 3b is a wheel, 3c is a gripping plate, 3d is an advance / retreat mechanism, 4 is a roller conveyor, 5 is a separation conveyor, 6 is a row conveyor, 7 is a conveyor, 8 is a roller curve conveyor, 9 is an accumulator conveyor, 10 is a turn device, 11 is a roller conveyor, 12 is a guide diverter, 13 is a roller conveyor, and 14 is a box A body group, B is a one-stage assembly, b is a box, and P is a pallet.

  As shown in FIGS. 1 and 2, the spreading device 1 of the present embodiment includes a lifting platform 2 that lifts the box group 14 transported to the transport destination of the transport conveyor 7 that transports the stacked box group 14. A gripping device 3 that grips the uppermost stage of the box group 14 raised by the lift 2 and moves in the lateral direction is provided at a position above the lift 2, and is gripped by the gripping device 3 at the transfer destination of the gripping device 3. The roller conveyor 4 that receives and conveys the one-stage assembly B is provided so as to be movable up and down.

  A separation conveyor 5 is provided at the transport destination of the roller conveyor 4 to separate the row of boxes b from the transported one-stage assembly B, and the separated row of boxes b transported to the transport destination of the separation conveyor 5 is orthogonal. A line conveyor 6 for feeding in the direction is provided, and a roller curve conveyor 8, an accumulator 9, a turn device 10, a roller conveyor 11, a guide diverter 12, and a roller conveyor 13 are provided behind the line conveyor 6 in accordance with the layout of the equipment. ing.

  The gripping device 3 is provided with rails 1b at the upper end portion of the frame 1a of the spreading device 1, and provided with wheels 3b for causing the gripping device 3 to travel along the rails 1b at the four corners of the frame 3a as shown in FIGS. Four holding plates 3c are arranged on the frame 3a so as to oppose each other in the front-rear and left-right directions, and an advancing / retracting mechanism 3d for moving each holding plate 3c back and forth horizontally with respect to the direction of the box b is provided. As shown in FIG. 5, the holding plate 3c has a flat holding surface and is inclined at an angle of 1 ° with respect to the vertical so that the upper distance between the opposite holding plates 3c is larger than the lower side. Yes. In FIG. 5, the angle is exaggerated for easy understanding.

  In this embodiment, the box group 14 is transported to the leveling device 1 by the transport conveyor 7 in a state where it is placed on the pallet P. As shown in FIG. 6A, the transported box group 14 moves to the lifting platform 2 and is raised to the grippable position of the gripping device 3, and the gripping device 3 is moved to the gripping plate as shown in FIG. 6B. 3c is advanced in the box body b direction, and the uppermost four side surfaces of the box body group 14 are gripped.

  The uppermost box body b gripped by the gripping plate 3 c is separated from the lower box body b as a one-stage assembly B by a slight lowering of the lifting platform 2. At this time, due to the inclination of the gripping plate 3c, the lower side hooks the side surface of the box body b to increase the frictional resistance, for example, depending on the case where the narrow box body b is present or deformed in the one-stage assembly B. The gripping is maintained without dropping even when the frictional resistance is lowered.

  As shown in FIG. 6C, the gripped one-stage assembly B moves to the upper position of the roller conveyor 4 along the rail 1b as shown in FIG. 6C, and the roller conveyor 4 rises slightly to reach the conveyor surface. The assembly B is received. In this state, the gripping device 3 retreats the gripping plate 3c to release gripping, and returns to the upper position of the lifting platform 2 for the next gripping.

  The roller conveyor 4 carrying the one-stage assembly B is driven and conveyed to the separation conveyor 5 as shown in FIG. 7A. When one row of the assembly B is placed on the starting end of the separation conveyor 5, the roller conveyor 4 is stopped, the separation conveyor 5 is driven, and only one row of boxes b is separated and conveyed by the conveyor 5 and separated from the one-stage assembly B. As shown in FIG. 7B, the separated row of boxes b is transported to the row conveyor 6, and when the row of boxes b is placed on the conveyor surface of the row conveyor 6, FIG. As shown in FIG. 4, the row conveyor 6 is driven to convey the row of boxes b in the orthogonal direction.

  Further, when the roller conveyor 4 is driven and the box b in the next row is separated and placed on the start end of the conveyor 5, the roller conveyor 4 is stopped and the separation conveyor 5 is driven to be separated from the one-stage assembly B. By repeating this, the one-stage assembly B is separated and transported in units of rows.

  The lifting platform 2 is further raised to grip the next one-stage assembly B, and the gripping device 3 grips the box group 14 from the four sides with the gripping plate 3c and the lifting platform 2 is slightly lowered to lower the box. The one-stage assembly B is separated from the body b, and the gripping device 3 moves in the lateral direction and transfers the gripped one-stage assembly B to the roller conveyor 4. The subsequent steps are performed in the same manner as shown in FIGS. 6 and 7, and the series of steps are sequentially repeated, so that the stacked box bodies 14 are separated into a single box b and go to a predetermined place. Be transported.

  The spreading device of the present invention is useful for spreading a deformable box such as a cardboard box.

It is a layout figure of the installation incorporating the spreading device of an example. It is explanatory drawing of the spreading apparatus of an Example. It is a top view of the holding apparatus of an Example. It is a side view of the holding | gripping apparatus of an Example. It is explanatory drawing of the holding plate of an Example. It is explanatory drawing which shows the distribution of an Example. It is explanatory drawing which shows the distribution of an Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Step spreading | diffusion apparatus 1a Frame 1b Rail 2 Elevating stand 3 Gripping apparatus 3a Frame 3b Wheel 3c Grip board 3d Advancement / retraction mechanism 4 Roller conveyor 5 Separation conveyor 6 Row conveyance conveyor 7 Conveyor 8 Roller curve conveyor 9 Accumulation conveyor 10 Turn apparatus 11 Roller conveyor 12 Guide Diverter 13 Roller Conveyor 14 Box Group B One-tier Assembly b Box P Pallet

Claims (3)

  A plurality of boxes containing articles are arranged horizontally so that they are in contact with each other and combined into a rectangular shape as a whole, and a lifting platform is provided that raises the box group in which the assemblies are stacked. , A stage provided with a gripping device that grips the uppermost stage of the box group raised above the elevator and moves in the lateral direction, and a transport conveyor that transports the one-stage assembly held at the destination of the gripping device The separation device includes a plurality of gripping plates for gripping a single-stage assembly from four side faces, and the gripping plate advances and retracts horizontally with respect to the box direction to grip and release grips. The holding plate of the holding plate is flat and has a structure that is inclined with respect to the vertical so that the upper distance between the opposite holding plates is larger than the lower side. , Staging device.   The spreading device according to claim 1, wherein the inclination angle of the gripping plate is in the range of 0.5 to 2 °.   2. A separation conveyor for separating the one-stage assembly conveyed to the conveyance destination of the conveyance conveyor for each row is provided, and a row conveyance conveyor for feeding the row of boxes separated to the conveyance destination of the separation conveyor in an orthogonal direction is provided. Or the separation apparatus of 2 description.

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