Dismantling cardboard box transport device

Abstract

The system smoothly transports dismantled cardboard boxes of varying thicknesses and irregularities without causing slippage or jamming, ensuring they are delivered reliably to their intended location. [Solution] The cardboard box transport device 1 of the present invention comprises a transport path S having an upward transfer section 11, an upward transport section 13, a horizontal / downward transfer section 15, and a horizontal / downward transport section 17, a pair of left and right side frames 19L, 19R having a shape along the transport path S and separated by a predetermined distance L in the width direction X, a front roller row 21 and a back roller row 23 arranged horizontally opposite to each other along the transport path S with a predetermined gap T between the left and right side frames 19L, 19R, a drive transmission mechanism 25 that drives each roller R constituting the front roller row 21 and each roller R constituting the back roller row 23, and rubber sponges 27 of a predetermined thickness t provided on one or both of the rollers R at each opposing position.

Description

Technical Field

[0001] The present invention relates to a conveying device for a disassembled cardboard box, which is attached to the downstream of the discharge part of a disassembling device for a cardboard box that compresses the assembled cardboard box, flattens it, and makes it into a flat unfolded state, and particularly relates to a conveying device for a disassembled cardboard box that can cope with the conveyance of various disassembled cardboard boxes with different thicknesses, sizes of unevenness, etc. to a high position.

Background Art

[0002] Conventionally, the disassembly of used cardboard boxes has been carried out manually using a cutter knife, pliers, etc. And in large retail stores, etc., more than 100 cardboard boxes were processed manually per day. Therefore, in recent years, a cardboard box disassembling device as shown in Patent Document 1 below has been developed and is used at the work sites for disassembling various cardboard boxes, aiming to reduce the labor of workers and significantly improve the processing capacity of the cardboard box disassembly work.

[0003] And the cardboard boxes compressed by the cardboard box disassembling device and flattened into an unfolded state are continuously and sequentially stored in a storage box installed at the discharge part of the cardboard box disassembling device. Also, they are dropped and stored in a storage cage or the like installed at the discharge part of the cardboard box disassembling device from above.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, as the number of cardboard boxes to be dismantled increases, the storage boxes and baskets installed to match the height of the cardboard box dismantling equipment mentioned above will no longer be sufficient. In such cases, it is necessary to prepare larger storage boxes or baskets and transport the dismantled cardboard boxes discharged from the cardboard box dismantling device upwards to the input location of the larger storage boxes or baskets.

[0006] However, since dismantled cardboard boxes come in various thicknesses and have different sizes of bumps and ridges, it is difficult to supply these boxes between two fixed conveyor belts and transport them while changing the angle of transport, which can lead to slippage and jamming. The present invention is based on these points and aims to provide an inexpensive and compact conveying device for dismantled cardboard boxes that can smoothly transport dismantled cardboard boxes of different thicknesses and irregularities without causing slippage or jamming, and reliably deliver them to the desired location. [Means for solving the problem]

[0007] To achieve the above objective, the dismantled cardboard box conveying device according to claim 1 of the present invention is a dismantled cardboard box conveying device attached downstream of the discharge section of a cardboard box dismantling device that compresses assembled cardboard boxes, flattens them, and lays them flat, and the conveying path for the dismantled cardboard boxes includes: an upward shift section that gradually tilts the dismantled cardboard boxes discharged horizontally from the discharge section of the cardboard box dismantling device upward to an upward movement position; an upward conveying section that conveys the dismantled cardboard boxes upward while maintaining the upward movement position; a horizontal / downward shift section that gradually tilts the position downward to a horizontal movement position or a downward movement position; and the horizontal movement position The device comprises a horizontal / downward transport unit that transports dismantled cardboard boxes horizontally or downward while maintaining a downward movement posture, a pair of left and right side frames that are shaped to follow the transport path of the dismantled cardboard boxes and are arranged at a predetermined distance apart in the width direction, a front side roller row and a back side roller row that are arranged horizontally opposite to each other along the transport path with a predetermined gap between the left and right side frames, a drive transmission mechanism that drives each roller constituting the front side roller row and each roller constituting the back side roller row, and rubber sponges of a predetermined thickness provided on one or both of the rollers at each opposing position.

[0008] Furthermore, the conveying device for dismantled cardboard boxes according to claim 2 is characterized in that, in the conveying device for dismantled cardboard boxes according to claim 1, in the upward movement section, rollers are arranged to support the dismantled cardboard box with a total of three rollers: two on the back side where pressure is applied and one on the front side at an intermediate position, and the rubber sponge is provided only for the rollers on the back side.

[0009] Furthermore, the conveying device for dismantled cardboard boxes according to claim 3 is characterized in that, in the conveying device for dismantled cardboard boxes according to claim 1, in the horizontal / downward transfer section, rollers are arranged to support the dismantled cardboard box with a total of three rollers: two on the surface side where pressure is applied and one on the back side at an intermediate position, and the rubber sponge is provided for both the rollers on the surface side and the back side.

[0010] Furthermore, the conveying device for dismantled cardboard boxes according to claim 4 is characterized in that, in the conveying device for dismantled cardboard boxes according to claim 1, the rollers are arranged in the upward conveying section and the horizontal / downward conveying section to support the dismantled cardboard boxes with a total of two rollers, one on the front side and one on the back side, and the rubber sponge is provided only for the roller on the front side.

[0011] Furthermore, the conveying device for dismantled cardboard boxes according to claim 5 is characterized in that, in the conveying device for dismantled cardboard boxes according to claim 1, a drive transmission mechanism is employed in which all rollers in the upward transfer section and the horizontal / downward transfer section are motor rollers equipped with motors inside.

[0012] Furthermore, the conveying device for dismantled cardboard boxes according to claim 6 is characterized in that, in the conveying device for dismantled cardboard boxes according to claim 1, in the upward conveying section and the horizontal / downward conveying section, some of the opposing rollers are motor rollers equipped with a motor inside, and the other opposing rollers are free rollers without a motor, and the power transmission to the free rollers is carried out by a drive transmission mechanism which is performed by a drive pulley provided at the end of the motor roller, a driven pulley provided at the end of an adjacent free roller, an endless belt wound between them, a drive pulley provided at the end of the free roller to which the power has been transmitted, a driven pulley provided at the end of another adjacent free roller, and an endless belt wound between them.

[0013] Furthermore, the conveying device for dismantled cardboard boxes according to claim 7 is characterized in that, in the conveying device for dismantled cardboard boxes according to claim 1, the inclination angle of the upward conveying section is 0° to 90°, and the inclination angle of the horizontal / downward conveying section is 0° to -90°.

[0014] Furthermore, the conveying device for dismantled cardboard boxes according to claim 8 is characterized in that, in the conveying device for dismantled cardboard boxes according to claim 1, the rubber sponges provided on each roller constituting the front roller row and the back roller row are arranged in a staggered pattern so as not to interfere with the rollers arranged in the conveying direction.

[0015] Furthermore, the conveying device for dismantled cardboard boxes according to claim 9 is characterized in that, in the conveying device for dismantled cardboard boxes according to claim 1, the gap between the opposing front-side roller rows and the back-side roller rows is 20 to 30 mm, and the thickness of the rubber sponge is 5 to 15 mm.

[0016] Furthermore, the conveying device for dismantled cardboard boxes according to claim 10 is characterized in that, in the conveying device for dismantled cardboard boxes according to claim 1, a pair of guide rollers, which are composed of a pair of free rollers, are provided at the upstream position of the upward movement section to guide the dismantled cardboard boxes discharged from the cardboard box dismantling device to the conveying path. [Effects of the Invention]

[0017] The above means provides the following effects. Specifically, in the conveying device for dismantled cardboard boxes of the present invention, since a rubber sponge of a predetermined thickness is provided on one or both of the rollers at each opposing position, slippage between the conveyed dismantled cardboard boxes and the rollers is prevented by the frictional force of the rubber sponge. Furthermore, because the deformation of the rubber sponge can accommodate changes in the thickness and the degree of unevenness of the conveyed dismantled cardboard boxes, jamming of the dismantled cardboard boxes is also prevented. Furthermore, this makes it possible to transport dismantled cardboard boxes upwards, which was previously difficult, enabling them to be transported and removed from large storage baskets and other containers with high input openings.

[0018] Furthermore, in the upward movement section, the dismantled cardboard box is supported by a total of three rollers: two on the back side where pressure is applied and one on the front side at an intermediate position. If rubber sponges are provided on the rollers on the back side, the holding force of the dismantled cardboard box is improved, making it possible to gradually tilt the position of the dismantled cardboard box upward and smoothly transition to the upward movement position. Furthermore, in the horizontal / downward movement section, the dismantled cardboard box is supported by a total of three rollers: two on the pressure-applied surface side and one on the back side at an intermediate position. If rubber sponges are provided on both the surface and back rollers, the holding force of the dismantled cardboard box is further improved, making it possible to lift the dismantled cardboard box and reliably and quickly transition it from an upward movement position to a horizontal or downward movement position.

[0019] Furthermore, in the lifting and horizontal / lowering conveying sections, which have low loads, the dismantled cardboard boxes are supported by a total of two rollers, one on the front side and one on the back side. If a rubber sponge is provided on the roller on the front side, the number of rollers and rubber sponges used can be reduced to the extent that it does not hinder the transport of the dismantled cardboard boxes, thereby preventing an increase in product costs. Furthermore, in the high-load upward and horizontal / downward shift sections, if a drive transmission mechanism is adopted in which all rollers are motor rollers with motors built inside, reliable driving force can be obtained that prevents slippage during the transport of dismantled cardboard boxes. In addition, since the motor is housed inside the motor roller, it becomes possible to create a transport device for dismantled cardboard boxes with a clean design in which the motor is not exposed on the outside.

[0020] Also, in the upward conveying section with a small load and the horizontal / downward conveying section, some of the opposing rollers are constituted by motor rollers, and the other opposing rollers are constituted by free rollers without motors. At the same time, the drive transmission between the motor roller and the adjacent free roller, and between the free roller and the other adjacent free roller is configured by a drive transmission mechanism composed of a drive pulley, a driven pulley, and an endless belt wound between them. In this case, it is possible to provide a conveying device for a disassembled cardboard box that can reduce the number of expensive motor rollers used and maintain the required conveying volume at a low cost.

[0021] Also, when the inclination angle of the upward conveying section is set to 0° to 90°, and the inclination angle of the horizontal / downward conveying section is set to 0° to -90°, it becomes possible to change the shape of the conveying device for the disassembled cardboard box into various shapes according to the size of the working space and the installation layout. Also, when the rubber sponges provided on each roller constituting the front surface side roller row and the back surface side roller row are arranged in a stagger pattern so as not to interfere between the rollers arranged in the conveying direction, it becomes possible to set the interval between the rollers adjacent in the conveying direction to be as small as possible.

[0022] Also, when the gap between the opposing front surface side roller row and back surface side roller row is 20 to 30 mm, and the thickness of the rubber sponge is 5 to 15 mm, it becomes possible to correspond to a disassembled cardboard box with a thickness obtained by subtracting the thickness of the rubber sponge during contraction from 20 to 30 mm, and it becomes possible to correspond to the unevenness of a disassembled cardboard box with a size obtained by subtracting the thickness of the rubber sponge during contraction from 5 to 15 mm. Also, when a pair of guide roller pairs constituted by a pair of free rollers for guiding the disassembled cardboard box discharged from the cardboard box disassembling device to the above-mentioned conveying path is provided at the upstream position of the above-mentioned upward transition section, it becomes possible to smoothly guide the disassembled cardboard box discharged from the cardboard box disassembling device to the conveying path of the conveying device for the disassembled cardboard box.

Brief Description of the Drawings

[0023] [Figure 1] It is a side view showing a state in which a conveying device for a disassembled cardboard box is attached to a discharge part of a cardboard box disassembling device, and is a diagram showing an embodiment of the present invention. [Figure 2] It is a side view showing the conveying device for the disassembled cardboard box, and is a diagram showing an embodiment of the present invention. [Figure 3] It is a front view showing the ascending conveying part of the conveying device for the disassembled cardboard box, and is a diagram showing an embodiment of the present invention. [Figure 4] It is a perspective view showing the conveying device for the disassembled cardboard box, and is a diagram showing an embodiment of the present invention. [Figure 5] It is a side view showing an enlarged view of part A in FIG. 2, and is a diagram showing an embodiment of the present invention. [Figure 6] It is a side view showing an enlarged view of part B in FIG. 2, and is a diagram showing an embodiment of the present invention. [Figure 7] It is a side view showing an enlarged view of part C in FIG. 2, and is a diagram showing an embodiment of the present invention. [Figure 8] It is a front view showing an enlarged view of part D in FIG. 3, and is a diagram showing an embodiment of the present invention. [Figure 9] It is a front view showing a state in which a motor roller is partially broken, and is a diagram showing an embodiment of the present invention. [Figure 10] It is a side view showing the conveying device for the disassembled cardboard box, and is a diagram showing another embodiment of the present invention. [Figure 11] It is a front view showing two modes with different arrangements of rubber sponges, and is a diagram showing still another embodiment of the present invention.

Embodiments for Carrying Out the Invention

[0024] Hereinafter, taking the illustrated embodiments as examples, the configuration of the conveying device for the disassembled cardboard box of the present invention and its operating state will be specifically described. In the following description, first, the outline of the conveying device for the disassembled cardboard box of the present invention and its installation state will be described. Next, the outline of the cardboard box disassembling device to which the conveying device for the disassembled cardboard box of the present invention is attached will be described.

[0025] Next, the specific configuration of the dismantled cardboard box conveying device of the present invention will be described, followed by a description of the operating state of the dismantled cardboard box conveying device for each part, according to the conveying path of the dismantled cardboard box. Furthermore, after discussing the operation and effects of the dismantled cardboard box conveying device configured in this way, we will finally briefly describe another embodiment of the dismantled cardboard box conveying device that differs in some configuration from the above embodiment.

[0026] (1) Overview of the conveying device for dismantled cardboard boxes and its installation status (see Figures 1 to 4) The dismantled cardboard box transport device 1 of the present invention is attached downstream of the discharge section 5 of the cardboard box dismantling device 3, which compresses assembled cardboard boxes A, flattens them, and lays them flat. The device transports the dismantled cardboard boxes B discharged from the discharge section 5 to the input opening 9 at the top of a large storage basket 7 for transport.

[0027] Furthermore, the dismantled cardboard box conveying device 1 of the present invention includes a conveying path S for the dismantled cardboard box B, which has the following components: an upward shifting section 11 that gradually tilts the dismantled cardboard box B, discharged horizontally H from the discharge section 5 of the cardboard box dismantling device 3, upward shifting section 13 that conveys the dismantled cardboard box B upwards +Z while maintaining the upward shifting position; a horizontal / downward shifting section 15 that gradually tilts the dismantled cardboard box B downwards -Z while maintaining the horizontal shifting position; and a horizontal / downward conveying section 17 that conveys the dismantled cardboard box B horizontally H or downwards -Z while maintaining the horizontal shifting position.

[0028] Furthermore, the dismantled cardboard box conveying device 1 of the present invention is basically composed of a pair of left and right side frames 19L and 19R having a shape along the conveying path S of the dismantled cardboard box B and arranged at a predetermined distance L in the width direction X, a front side roller row 21 and a back side roller row 23 arranged horizontally opposite to each other along the conveying path S with a predetermined gap T between the left and right pair of side frames 19L and 19R, a drive transmission mechanism 25 that drives each roller R constituting the front side roller row 21 and each roller R constituting the back side roller row 23, and a rubber sponge 27 of a predetermined thickness t provided on one or both of the rollers R at each opposing position.

[0029] The cardboard box dismantling device 1 of the present invention, configured in this manner, is installed as an example, as shown in Figure 1, using a mounting frame 29 attached to the cardboard box dismantling device 3 described below, so that the entrance 31 of the transport path S faces the discharge section 5 of the cardboard box dismantling device 3. In addition, although not shown in the diagram, it is also possible to provide a separate support frame to support the side frames 19L and 19R, and to configure the system so that the side frames 19L and 19R are supported by this support frame.

[0030] (2) Overview of the cardboard box dismantling device (see Figure 1) Various types of dismantling devices capable of dismantling an assembled cardboard box A into a flat, unfolded state are applicable as the cardboard box dismantling device 3 to be attached to the dismantling cardboard box transport device 1 of the present invention. Figure 1 shows an example, and this cardboard box dismantling device 3 is basically composed of two transport conveyors 43 and 45 arranged such that the input side for transporting cardboard box A is wide and the output side for transporting dismantled cardboard box B is narrow, and a pair of compression and discharge rollers 47 and 49 provided downstream of the output ends of these two transport conveyors 43 and 45.

[0031] The two conveyor belts 43 and 45 are configured as follows: a first conveyor belt 43 positioned below as an example of transporting cardboard boxes A in a horizontal transport direction Y, and a second conveyor belt 45 positioned above as an example of facing the first conveyor belt 43, with its input side spaced apart from the first conveyor belt 43 and its output side approaching the first conveyor belt 43, in an inclined position. Furthermore, the transport speeds of these two transport conveyors 43 and 45 are set to different speeds. For example, the transport speed of the upper second transport conveyor 45 is set to be faster than the transport speed of the lower first transport conveyor 43.

[0032] Furthermore, the pair of compression and discharge rollers 47 and 49 are, for example, composed of two rollers of the same diameter and length: a compression and discharge roller 47 located above and a compression and discharge roller 49 located below. A gap U is formed between these two rollers 47 and 49, through which the dismantled cardboard box B, which has been compressed and unfolded, can pass. Furthermore, transmission gears (not shown) are attached to the ends of the pair of compression / discharge rollers 47 and 49 in a manner that they are interlocked. For example, when the upper compression / discharge roller 47 is rotated in the transport direction Y by an externally provided motor (not shown), the lower compression / discharge roller 49 is configured to rotate at the same speed in the transport direction Y.

[0033] (3) Specific configuration of the conveying device for dismantled cardboard boxes (see Figures 1 to 9) Next, we will specifically describe the configuration of each part of the cardboard box transport device 1. The left and right pair of side frames 19L and 19R each include a curved frame F1 that curves downward over a range of approximately 90°, a vertical frame F2 that extends upward +Z above it, a curved frame F3 that curves upward over a range of approximately 90° above it, and a horizontal frame F4 that extends horizontally H downstream in the transport direction Y.

[0034] The section supported by the lower curved frame F1 forms the upward shift section 11 of the transport path S. In the upward shift section 11, two sets of roller units are provided, for example, each consisting of a total of three rollers R: two on the back side where pressure is applied and one on the front side at an intermediate position. These two sets of roller units are configured to support the dismantled cardboard boxes B that have been brought in and transport them upwards +Z. Furthermore, all of the above rollers R employ a drive transmission mechanism 25 composed of motor rollers MR equipped with motors M inside. On the roller R on the back side, for example, a rubber sponge 27 of a predetermined width is wrapped around the outer circumference of the roller R at appropriate intervals in the width direction X, using double-sided tape or the like.

[0035] On the other hand, the portion supported by the upper curved frame F3 forms the horizontal / downward transition section 15 of the transport path S. In the horizontal / downward transition section 15, two sets of roller units are provided as an example, each consisting of a total of three rollers R: two on the pressure-applied surface side and one on the back side at an intermediate position. These two sets of roller units support the dismantled cardboard boxes B that have been transported upward +Z, gradually changing their angle so that they can be transported towards the horizontal direction H on the right in Figures 3 and 7. Furthermore, all of the above rollers R employ a drive transmission mechanism 25 composed of motor rollers MR equipped with motors M inside, and rubber sponges 27 of a predetermined width are wrapped around the outer circumference of both the front and back rollers R using double-sided tape or the like, with appropriate spacing in the width direction X.

[0036] Furthermore, the portion supported by the vertical frame F2 becomes the upward transport section 13 of the transport path S, and the portion supported by the horizontal frame F4 becomes the horizontal / downward transport section 17 of the transport path S. In the upward conveying section 13 and the horizontal / downward conveying section 17, multiple sets of roller units are provided, each consisting of two rollers R, one on the front side and one on the back side. These multiple sets of roller units are configured to support the dismantled cardboard boxes B as they are being conveyed upward +Z or horizontally H, and to convey them in either the upward +Z direction or the horizontal H direction, respectively.

[0037] Furthermore, of the rollers R described above, some opposing rollers R are composed of motor rollers MR equipped with a motor M inside, while the other opposing rollers R are composed of free rollers FR that do not have a motor M. The power transmission to the free roller FR is performed by a drive transmission mechanism 25 which includes a drive pulley 35 provided at the end of the motor roller MR, a driven pulley 37 provided at the end of an adjacent free roller FR, and an endless belt 39, which is wound between them, as an example, in the shape of a rubber ring with a circular cross-section.

[0038] Furthermore, the free rollers FR are arranged as follows: one set at the lower end of the upward conveying section 13, and at the loading and unloading ends of the horizontal / downward conveying section 17; three sets of free rollers FR in the middle section of the upward conveying section 13, sandwiched between the motor rollers MR; and two sets of free rollers FR in the middle section of the horizontal / downward conveying section 17, sandwiched between the motor rollers MR. Furthermore, in the upward conveying section 13 and the horizontal / downward conveying section 17, a rubber sponge 27 of a predetermined width is wrapped around only the surface-side roller R using double-sided tape or the like, with appropriate spacing in the width direction X, so as to enclose the outer circumference of the roller R. In the upward conveying section 13, as shown in Figures 3 and 8, the rubber sponges 27 provided on each roller R constituting the surface-side roller row 21 and the back-side roller row 23 are arranged in a staggered pattern, for example, so as not to interfere with the roller R arranged in the conveying direction Y.

[0039] In addition, in this embodiment, the upward conveying section 13 is positioned vertically and the horizontal / downward conveying section 17 is positioned horizontally. However, the invention is not limited to this configuration. The inclination angle θ1 of the upward conveying section 13 can be changed within the range of 0° to 90°, and the inclination angle θ2 of the horizontal / downward conveying section 17 can be changed within the range of 0° to -90°. Furthermore, as the rubber sponge 27, a foaming rubber material with a large deformation capacity can be used. For example, various foaming rubber materials can be used, such as those mainly composed of styrene-butadiene rubber, chloroprene rubber, ethylene-propylene rubber, silicone rubber, acrylonitrile-butadiene rubber, etc.

[0040] In this embodiment, the gap T between the opposing front-side roller row 21 and back-side roller row 23 is set to 25 mm as an example, the thickness t of the rubber sponge 27 is set to 10 mm as an example, the outer diameter D of the roller R is set to 57 mm as an example, and the length of the roller R is set to 1 m as an example. However, these values ​​are not limited to these and can be adjusted as appropriate depending on the size and type of the dismantled cardboard box B. For example, the gap T between the front roller row 21 and the back roller row 23 can be adjusted within a range of 20 to 30 mm, and the thickness t of the rubber sponge 27 can be adjusted within a range of 5 to 15 mm, for example.

[0041] In addition, in this embodiment, a pair of guide rollers 41, consisting of a pair of free rollers FR, is provided upstream of the upward movement section 11 to guide the dismantled cardboard boxes B discharged from the cardboard box dismantling device 3 to the transport path S. Furthermore, various motor rollers can be used as motor rollers MR, in which the motor M is housed inside the roller R, and an example of a motor roller MR is shown in Figure 9. This motor roller MR houses the motor M, a reduction gear 51 composed of a planetary gear mechanism, and bearings 55A and 55B that support the rotating shafts 53A and 53B protruding from both ends of the roller R inside the cylindrical roller R. At least one of the rotating shafts 53B is a spring shaft that can be extended and retracted by a spring 57, and is configured to be attached to the side frames 19L and 19R with a single touch. In addition, a hole (not shown) is formed in the center of the other rotating shaft 53A for passing electrical wiring 59 through, and power is supplied from the outside via the electrical wiring 59 that is drawn out from this hole.

[0042] (4) Operating status of the conveying device for dismantled cardboard boxes (see Figures 5 to 8) Next, following the transport path S of the dismantled cardboard box B described above, the operating state of the dismantled cardboard box transport device 1 will be explained by dividing it into the upward transfer section 11, the upward transport section 13, the horizontal / downward transfer section 15, and the horizontal / downward transport section 17. (A) Upward transition section (see Figure 5) The dismantled cardboard box B, compressed by the compression and discharge rollers 47 and 49 of the cardboard box dismantling device 3 and laid flat, receives driving force from the compression and discharge rollers 47 and 49 and is discharged toward the upward movement section 11 of the dismantled cardboard box conveying device 1 of the present invention.

[0043] Since a pair of guide rollers 41 is provided at the loading entrance 31 of the upward transfer section 11, the dismantled cardboard boxes B are guided by this pair of guide rollers 41 and accurately and smoothly into the gap T between the front roller row 21 and the back roller row 23. Then, in the upward transfer section 11, the dismantled cardboard box B is gently folded and gradually changes its posture upward +Z as it is transported towards the upward transport section 13 by the action of the roller unit, which consists of a total of three rollers: one on the front side and two on the back side.

[0044] (B) Lifting conveying section (see Figures 6 and 8) In the upward conveying section 13, the dismantled cardboard box B is conveyed in a vertical position upward + Z due to the action of the roller unit, which consists of a total of two opposing rollers R, one on the front side and one on the back side as described above. In the upward conveying section 13, as shown in Figure 8, the material is conveyed not only by direct driving force from the motor roller MR, but also by driving force from the free roller FR positioned between the motor roller MR via the drive pulley 35, driven pulley 37, and endless belt 39.

[0045] (C) Horizontal / downward shift section (see Figure 7) In the horizontal / downward transfer section 15, the action of the roller unit, which consists of a total of three rollers R (two on the front side and one on the back side), and the action of the rubber sponges 27, 27 provided on both the front and back sides, provides a greater transport force, allowing the dismantled cardboard box B to be folded smoothly and gradually change its orientation from upward +Z to horizontal H, and be transported toward the horizontal / downward transport section 17.

[0046] (D) Horizontal / downward transport section (see Figure 7) In the horizontal / downward conveying section 17, the dismantled cardboard boxes B are conveyed in a horizontal position toward the discharge port 33 by the action of a roller unit consisting of a total of two opposing rollers R, one on the front side and one on the back side, as described above, and are discharged from the discharge port 33 toward the input port 9 of a large storage basket 7 or the like, located downward-Z. Furthermore, in the horizontal / downward conveying section 17, similar to the upward conveying section 13, the material is conveyed not only by direct driving force from the motor roller MR, but also by driving force from the free roller FR positioned between the motor roller MR via the drive pulley 35, driven pulley 37, and endless belt 39.

[0047] Furthermore, with the conveying device 1 for dismantled cardboard boxes according to this embodiment, dismantled cardboard boxes B of different thicknesses and sizes of unevenness can be smoothly conveyed without slipping or jamming, and reliably transported to a position where they can be put into the input opening 9 of a storage basket 7 or the like, which is located at a high position. Furthermore, reducing the number of motor rollers MR makes the system less expensive, and adjusting the inclination angle θ1 of the upward conveying section 13 and the inclination angle θ2 of the horizontal / downward conveying section 17 makes it more compact and usable in narrow installation spaces. In addition, it can accommodate various installation layouts and can handle storage baskets 7 of different heights.

[0048] [Other embodiments] The cardboard box transport device 1 of the present invention is not limited to the embodiments described above, and can be modified within the scope of the gist of the invention. For example, as shown in Figure 10, the inclination angle θ1 of the upward conveying section 13 can be set to an upward inclination angle that is slightly downward-Z from a vertical position. Similarly, the inclination angle θ2 of the horizontal / downward conveying section 17 can be set to a downward inclination angle that is slightly downward-Z from a horizontal position.

[0049] Furthermore, in the load-bearing upward shift section 11 and the horizontal / downward shift section 15, it is possible to increase the number of rubber sponges used by providing a double layer of rubber sponges 27, as shown in Figure 11(a). Also, as shown in Figure 11(b), it is possible to use a long, cylindrical rubber sponge 27 that covers a wide area, such as the entire length of the roller R. Furthermore, the motor M that powers the roller R can be installed inside the roller R in a motor-roller MR system, or it can be installed outside the roller R and transmits driving force to the roller R (in this case, the free roller FR) via an appropriate drive transmission mechanism 25. [Industrial applicability]

[0050] The dismantled cardboard box transport device of the present invention can be used at work sites where assembled cardboard boxes are being dismantled, and is particularly useful at work sites where a large number of cardboard boxes are being dismantled and it is necessary to store the dismantled cardboard boxes in large storage baskets or the like. [Explanation of Symbols]

[0051] 1. Conveying device for dismantled cardboard boxes 3. Cardboard box dismantling device 5 Discharge section 7 Storage baskets 9 Inlet 11. Ascending transition section 13. Lifting and conveying section 15 Horizontal / downward transition section 17 Horizontal / Downward Conveying Section 19 Side frame 21 Surface-side roller row 23 Roller rows on the reverse side 25 Drive transmission mechanism 27 Rubber sponge 29 Mounting frame 31 Loading entrance 33 Exit 35 Drive pulley 37 Driven pulley 39 Endless belt 41 Guide roller pair 43 Conveyor 45 Conveyor 47 Compression / Discharge Roller 49 Compression / Discharge Roller 51 Reducer 53 Rotation axis 55 Bearings 57 Spring 59 Electrical Wiring A cardboard box B. Dismantled cardboard boxes H horizontal direction +Z upward -Z Downward S Conveyor Route X Width direction L distance T gap R. Laura MR Motor Roller FR Free Roller t thickness Y Conveying direction U gap F Frame M Motor θ Tilt angle D Outer diameter

Claims

1. A conveying device for dismantled cardboard boxes, attached downstream of the discharge section of a cardboard box dismantling device that compresses assembled cardboard boxes, flattens them, and lays them flat, The transport path for dismantled cardboard boxes includes an upward shift section that gradually tilts the dismantled cardboard boxes, which are discharged horizontally from the discharge section of the cardboard box dismantling device, upward to an upward movement position; an upward transport section that transports the dismantled cardboard boxes upward while maintaining the upward movement position; a horizontal / downward shift section that gradually tilts the boxes downward to a horizontal or downward movement position; and a horizontal / downward transport section that transports the dismantled cardboard boxes horizontally or downward while maintaining the horizontal or downward movement position. The above-mentioned dismantled cardboard box has a shape that conforms to the transport route, and a pair of left and right side frames are arranged at a predetermined distance apart in the width direction, A front-side roller row and a back-side roller row are arranged horizontally opposite to each other along the transport path, with a predetermined gap between them, between the left and right side frames described above. A drive transmission mechanism that drives each roller constituting the above-mentioned front-side roller row and each roller constituting the above-mentioned back-side roller row, A conveying device for dismantled cardboard boxes, characterized by comprising a rubber sponge of a predetermined thickness provided on one or both of the rollers at each opposing position.

2. In the above-mentioned upward movement section, rollers are arranged to support the dismantled cardboard box with a total of three rollers: two on the back side where pressure is applied, and one on the front side at an intermediate position. The conveying device for dismantled cardboard boxes according to claim 1, characterized in that the rubber sponge is provided only on the roller on the back side.

3. In the horizontal / downward movement section described above, rollers are arranged to support the dismantled cardboard box with a total of three rollers: two on the surface where pressure is applied and one on the back side at an intermediate position. The conveying device for dismantled cardboard boxes according to claim 1, characterized in that the rubber sponge is provided on both the front and back rollers.

4. In the above-mentioned upward conveying section and horizontal / downward conveying section, rollers are arranged to support the dismantled cardboard boxes with a total of two rollers, one on the front side and one on the back side. The conveying device for dismantled cardboard boxes according to claim 1, characterized in that the rubber sponge is provided only on the roller on the surface side.

5. The conveying device for dismantled cardboard boxes according to claim 1, characterized in that the above-mentioned upward shifting section and horizontal / downward shifting section employ a drive transmission mechanism in which all rollers are motor rollers equipped with motors inside.

6. In the above-mentioned upward conveying section and horizontal / downward conveying section, some of the opposing rollers are composed of motor rollers equipped with motors inside. The opposing rollers in other sections are composed of free rollers that do not have motors. Power is transmitted to the above free rollers by a drive pulley provided at the end of the motor roller, a driven pulley provided at the end of the adjacent free roller, and an endless belt wound between them. The conveying device for dismantled cardboard boxes according to claim 1, characterized in that it employs a drive transmission mechanism that is performed by a drive pulley provided at the end of a free roller to which the above power is transmitted, a driven pulley provided at the end of another adjacent free roller, and an endless belt wound between them.

7. The conveying device for dismantled cardboard boxes according to claim 1, characterized in that the inclination angle of the upward conveying section is 0° to 90°, and the inclination angle of the horizontal / downward conveying section is 0° to -90°.

8. The conveying device for dismantled cardboard boxes according to claim 1, characterized in that the rubber sponges provided on each roller constituting the front side roller row and the back side roller row are arranged in a staggered pattern so as not to interfere with the rollers arranged in the conveying direction.

9. The conveying device for dismantled cardboard boxes according to claim 1, characterized in that the gap between the opposing front-side roller rows and the back-side roller rows is 20 to 30 mm, and the thickness of the rubber sponge is 5 to 15 mm.

10. The conveying device for dismantled cardboard boxes according to claim 1, characterized in that a pair of guide rollers, which consist of a pair of free rollers, are provided upstream of the above-mentioned upward movement section to guide the dismantled cardboard boxes discharged from the cardboard box dismantling device to the above-mentioned conveying path.

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