JP2021037531A - Box-shaped compression apparatus - Google Patents

Abstract

To provide a box-shaped compression apparatus that can improve compressibility of an object to be compressed and improve maintainability.SOLUTION: A box-shaped compression apparatus 1 comprises: a belt conveyor 340 that conveys an object to be compressed toward a downstream while placing the object thereon; a lower compression roller 410 arranged at a downstream side of the belt conveyor 340; and an upper compression roller 440, arranged at a downstream side of the belt conveyor 340 and arranged in parallel to a rotation axis of the lower compression roller, above the lower compression roller 410, which compresses the object to be compressed conveyed by the belt conveyor 340 in cooperation with the lower compression roller 410. On a rotary outer peripheral surface of the lower compression roller 410 are provided a plurality of lower protrusion portions 412 that are parallel to the rotation axis of the lower compression roller 410 and are long in a width direction of the upper compression roller 440, and on a rotary outer peripheral surface of the upper compression roller 440 are provided a plurality of upper protrusion portions 442 that are parallel to the rotation axis of the upper compression roller 440 and are long in the width direction of the upper compression roller 440.SELECTED DRAWING: Figure 1

Description

The present invention relates to a device for compressing a paper container such as an empty cardboard box. More specifically, the present invention relates to an apparatus that conveys by an endless belt conveyor, forcibly feeds in the conveying direction, and compresses by a compression roller or the like arranged in a stepped manner.

A device for compressing and reducing the volume of a cardboard box or the like is disclosed in Patent Document 1. This device includes a belt conveyor, a lower compression roller around which the belt conveyor is wound, an upper compression roller, a first paddle arranged on the upstream side of the belt conveyor, and upper compression on the downstream side of the belt conveyor from the first paddle. It has a second paddle located upstream of the roller. This is a device that feeds an object to be compressed conveyed by a belt conveyor while gradually compressing it with a first paddle and a second paddle, and compresses it with a lower compression roller and an upper compression roller.

JP-A-2019-72708

In the apparatus of Patent Document 1, the material to be compressed after the final compression by the upper compression roller and the lower compression roller passes through the upper compression roller and the lower compression roller, and then the compressed bulk expands in an attempt to return to the original shape. It has the problem of poor rate. Further, since the belt conveyor is wound around the lower compression roller, even if only the belt conveyor is to be replaced, it is necessary to disassemble the lower compression roller and its surroundings, which poses a problem of poor maintainability.

Therefore, the present invention has been made with an eye on the above problems, and an object of the present invention is to provide a box-shaped material compression device capable of improving the compressibility of the material to be compressed and improving maintainability.

In order to solve the above problems, one aspect of the present invention includes a belt conveyor on which an object to be compressed is placed and conveyed to the downstream side, a lower compression roller arranged on the downstream side of the belt conveyor, and a downstream side of the belt conveyor. And above the lower compression roller, parallel to the axis of rotation of the lower compression roller, and in cooperation with the lower compression roller, the upper compression roller for compressing the material to be compressed conveyed by the belt conveyor. On the outer peripheral surface of the rotation of the lower compression roller, a plurality of lower protrusions parallel to the rotation axis of the lower compression roller and long in the width direction of the upper compression roller, and on the outer peripheral surface of the rotation of the upper compression roller, the rotation of the upper compression roller The gist is that it is a box-shaped material compression device provided with a plurality of upper protrusions that are parallel to the shaft and are long in the width direction of the upper compression roller.

According to the present invention, it is possible to provide a box-shaped material compression device capable of improving the compressibility of the material to be compressed and improving maintainability.

It is a figure which looked at the box-shaped material compression apparatus which is an embodiment of this invention from the upstream in the transport direction, and is the perspective view which omitted the illustration of the frame on the left side in a transport direction. It is a front sectional view of the box-shaped material compression apparatus which is an embodiment of this invention, cross-sectional view along the transport direction. FIG. 5 is a side sectional view of the upper compression roller and the lower compression roller of the box-shaped material compression device according to the embodiment of the present invention, which are cross-sectionally viewed from the upstream side in the transport direction and have an enlarged main part. It is a front cross-sectional view which enlarged the main part by cross-section of the box-shaped material compression apparatus which is an embodiment of this invention along the transport direction.

An embodiment of the present invention will be described with reference to the drawings. In the description of the drawings below, the same or similar parts may be designated by the same or similar reference numerals. The drawings used for explanation are schematic, and the relationship with the dimensions of each part may differ from the actual one. In addition, the technical idea of the present invention may be modified in various ways within the technical scope specified by the claims stated in the claims.

1 to 4 show a box-shaped material compression device 1 which is an embodiment of the present invention. The box-shaped material compression device 1 includes a transport unit 3 and a compression unit 4 in which both left and right ends with respect to the transport direction are supported by the frame unit 2, and an operation unit 6 for the operator to operate this device by the operator. There is. The transport unit 3 has a belt conveyor 340 on which the object to be compressed is placed and is transported to the downstream side, and is conveyed to the downstream side. On the downstream side of the belt conveyor 340, a compression unit 4 provided with a first paddle 420, a second paddle 430, a lower compression roller 410, and an upper compression roller 440 is provided, and a compressed object conveyed by the belt conveyor 340 is gradually transferred. Compress.

Further, the lower compression roller 410 and the upper compression roller 440 are provided with a plurality of lower protrusions 412 and upper protrusions 442 that are long in the direction orthogonal to the rotation direction, and compress the object to be compressed and feed it in the rotation direction or the transport direction. be able to. In FIG. 2, the right side in the figure is the charging side of the compressed object, and the compressed object is conveyed from the right side to the left side in the figure.

The embodiments will be described in detail. The frame portion 2 shown in FIG. 2 is a plate-shaped skeleton portion constituting the box-shaped object compression device 1, and is arranged on both the left and right sides of the transport portion 3 and the compression portion 4 with respect to the transport direction, and is compressed with the transport portion 3. The portion 4 is rotatably supported.

The transport unit 3 includes a drive roller 313, a tension roller 350, and a belt conveyor 340, and the drive roller 313 and the tension roller 350 are rotatably supported by the frame unit 2. The drive roller 313 and the tension roller 350 are both columnar members having substantially the same length, and the rotation axes are provided horizontally and arranged in parallel with each other. In the case of this embodiment, the tension roller 350 is provided with a rotational outer diameter substantially the same as that of the drive roller 313, and is arranged on the charging side which is the upstream side in the transport direction.

By winding the belt conveyor 340 around the drive roller 313 and the tension roller 350 and rotationally driving the drive roller 313, the belt conveyor 340 can rotate around between the drive roller 313 and the tension roller 350. The drive roller 313 can rotate by transmitting power from a motor 310 located below by a chain or the like. The upper upper surface, which is the transport surface of the belt conveyor 340, is provided horizontally and can be moved from the loading side on the right side shown in FIG. 2 to the left side.

Further, the tension roller 350 can move in the horizontal direction parallel to the transport direction, and by adjusting the tension of the belt conveyor 340, the belt conveyor 340 can be driven without slipping.

A plate-shaped support table 361 is arranged between the drive roller 313 and the tension roller 350 on the inner peripheral portion of the belt conveyor 340, and the upper surface supports and assists the transport surface of the belt conveyor 340 so as not to bend downward. do.

The compression unit 4 is located above the belt conveyor 340 and downstream in the transport direction. The compression unit 4 includes a lower compression roller 410, a first paddle 420, a second paddle 430, and an upper compression roller 440. The object to be compressed conveyed by the belt conveyor 340 is conveyed to the compression unit 4, first compressed by the rotation of the first paddle 420, then secondarily compressed by the rotation of the second paddle 430, and then the lower compression roller 410 and the lower compression roller 410. It is gradually compressed so that it is finally compressed by the upper compression roller 440.

The positional relationship of mounting the lower compression roller 410, the first paddle 420, the second paddle 430, and the upper compression roller 440 of the compression unit 4 will be described.

The first paddle 420 is for primary compression of the object to be compressed that is placed on the belt conveyor 340 and conveyed and moved to the downstream side. The first paddle 420 has a drive roller 313 and a rotation shaft 423 arranged in parallel on the upstream side in the transport direction above the belt conveyor 340, and is rotatably supported by the frame portion 2.

The first paddle 420 has a plurality of plate-shaped first projecting plates 422 arranged in the radial direction from the rotation shaft 423. The width of the first projecting plate 422 with respect to the transport direction is provided to be substantially the same as the width of the belt conveyor 340. Although it is assumed that four first projecting plates 422 are provided in the embodiment, the number may be more or less than four. The first erection plate 425 is arranged so as to span the end 424 of each of the plurality of first erection plates 422. The first erection plate 425 is provided so that the end portion 424 of the first projecting plate 422 with respect to the radius of gyration direction is slightly projected. The left and right widths of the first erection plate 425 with respect to the transport direction are provided to be the same as the left and right widths of the first protrusion 422.

The first paddle 420 is driven so that the lower side is in the same direction as the transport direction of the belt conveyor 340 and the end portion 424, which is the outer circumference of the rotation, rotates faster than the transport speed of the belt conveyor 340. The method of transmitting the driving force will be described later. In the embodiment described, the rotation outer peripheral speed of the first paddle 420 is set to be substantially twice as fast as the transport speed of the belt conveyor 340. With this configuration, the protruding end 424 of the first projecting plate 422 can bite into the object to be compressed and be pressed down on the belt conveyor 340. Further, the rotating end portion 424 can forcibly feed the upper part of the object to be compressed to the downstream side in the transport direction.

The object to be compressed is then compressed by being sandwiched between the belt conveyor 340 and the first projecting plate 422. The object to be compressed to be conveyed and moved is sequentially sent to the downstream side by the rotating belt conveyor 340 and the rotating first projecting plate 422 and the first erection plate 425 without stopping, and at the same time, the primary compression is performed. Will be done. Since the rotation speed of the outer circumference of the rotation of the first paddle 420 is faster than the transfer speed of the belt conveyor 340, the upper portion of the box-shaped object to be compressed is pushed down to the downstream side by the first paddle 420 to perform primary compression.

Since the speed of the outer circumference of rotation of the first paddle 420 is faster than that of the belt conveyor 340, the object to be compressed does not flow back in the upstream direction, and smooth primary compression can be performed. After that, the object to be compressed is conveyed to the downstream side by the belt conveyor 340 and the first paddle 420, and is secondarily compressed by the rotation of the second paddle 430 located on the downstream side of the first paddle 420.

The rotating shaft 431 of the second paddle 430 is parallel to the first paddle 420, is located on the downstream side of the belt conveyor 340 from the rotating shaft 423 of the first paddle 420, and on the lower side of the first paddle 420. It can be said that the rotation shaft 431 of the second paddle 430 is parallel to the drive roller 313 arranged in parallel with the first paddle 420. The second paddle 430 is bridged over the frame portion 2 and is rotatably arranged.

The second paddle 430 includes a second projecting plate 432 in which a plurality of plates are arranged radially from the rotation center portion from the rotation shaft 431. The driving method of the second paddle 430 will be described later.

The width of the plurality of second projecting plates 432 is a rectangular plate provided substantially the same as the width on the left and right in the transport direction of the belt conveyor 340, and the plate surface is directed in the rotation direction. In the embodiment described, four second projecting plates 432 are provided, but the number may be four or less or four or more. The second projecting plate 432 is provided with a length in the radius of gyration smaller than that of the first projecting plate 422, and the rotating outer peripheral diameter of the second paddle 430 is set to be smaller than the rotating outer peripheral diameter of the first paddle 420. There is.

Further, the second erection plate 435 is arranged so as to cross the tip portions 433 of each of the plurality of second projecting plates 432. The second erection plate 435 is provided so that the tip portion 433 of the first projecting plate 422 is slightly projected. The left and right widths of the second erection plate 435 with respect to the transport direction are provided to be the same as the left and right widths of the second erection plate 432.

The lower side of the second paddle 430 is rotationally driven in the same direction as the transport direction of the belt conveyor 340. The second paddle 430 is set to the same rotation speed as the first paddle, but since the rotation outer circumference diameter is smaller than the first paddle 420, the speed at the rotation outer circumference of the second paddle 430 is slower than that of the first paddle 420. Further, the tip portion 433, which is the outer circumference of the rotation, is driven to rotate by setting the diameter of the outer circumference of the rotation so as to be faster than the transport speed of the belt conveyor 340. In the embodiment described, the rotation outer peripheral speed of the second paddle 430 is set to be approximately 1.2 times the transfer speed of the belt conveyor 340. The method of transmitting the driving force will be described later.

With this configuration, the tip portion 433 of the second projecting plate 432 bites into the object to be compressed after the primary compression. Further, the tip portion 433 presses the compressed object on the belt conveyor 340 to prevent the compressed object from moving upstream on the belt conveyor 340. The second paddle 430 also plays a role of delivering the material to be compressed that has been primarily compressed and sent by the first paddle 420 in order to send the material to be compressed downstream from the second paddle 430 in which the final compression step is performed. It can be said that the rotational outer peripheral speed of the second paddle 430 is set to be slower than the rotational outer peripheral speed of the first paddle 420 to adjust the amount of the object to be compressed to be sent downstream in the transport direction.

Since the rotation outer peripheral diameter of the second paddle 430 is smaller than that of the first paddle 420, the respective rotation axes can be brought close to each other as much as possible. When the object to be compressed is compressed in the lower portion of each of the adjacent rotation outer circumferences, the secondary compression can be performed immediately after the primary compression, and the compression time can be shortened. In addition, since the size of the entire device can be reduced, it is not necessary to waste materials and the cost can be reduced. Further, the rotation outer diameter of the second paddle 430 is arranged so as not to interfere with the rotation outer diameter of the adjacent first paddle 420, and the lower end of the rotation outer diameter of the second paddle 430 is the rotation of the first paddle 420. Since it is lower than the lower end of the outer peripheral diameter, it is possible to efficiently perform secondary compression of the object to be compressed whose bulk has been reduced by primary compression.

The object to be compressed secondarily compressed by the second paddle 430 is conveyed to the downstream side by the rotation of the belt conveyor 340 and the second paddle 430, and is conveyed by the upper compression roller 440 and the lower compression roller 410 located on the downstream side in the conveying direction. It is finally compressed.

The rotation shaft 411 of the lower compression roller 410 is arranged below the rotation shaft of the drive roller 313 and downstream of the drive roller 313 in the transport direction. The rotating shaft 411 is arranged so as to be parallel to the rotating shaft 431 of the second paddle 430 and to be bridged over the frame portions 2 arranged on the left and right in the transport direction.

The lower compression roller 410 is a cylindrical or cylindrical member, and the cylindrical length is provided to be the same as the left-right width with respect to the transport direction of the belt conveyor 340. The upper compression roller 440 is rotatably supported, and the outer circumference of the cylinder is rotationally driven so as to have the same speed as the transport speed of the belt conveyor 340. The rotation direction of the upper compression roller 440 is provided so that the upper portion of the upper compression roller 440 is in the same direction as the transport direction.

A plurality of upper protrusions 412 are arranged on the outer peripheral surface of the cylinder of the lower compression roller 410. The lower protrusions 412 are prismatic members, and are arranged in the longitudinal direction in parallel with the rotation shaft 411, and a plurality of lower protrusions 412 are arranged at substantially equal intervals in the rotation direction. The lower protrusion 412 of this embodiment is set to be slightly shorter than the length of the cylindrical portion of the lower compression roller 410.

The rotation shaft 441 of the upper compression roller 440 is located below the rotation shaft 431 of the second paddle 430 and downstream of the second paddle 430 in the transport direction, and is arranged in the downstream direction of the drive roller 313 in the transport direction. .. The rotation shaft 441 of the upper compression roller 440 is arranged so as to be parallel to the rotation shaft 431 of the second paddle 430 and to be bridged over the frame portions 2 arranged on the left and right in the transport direction. That is, the rotation axes of the first paddle 420, the second paddle 430, the lower compression roller 410, the upper compression roller 440, and the drive roller 313 that constitute the compression unit 4 are arranged in parallel with each other.

The upper compression roller 440 is a cylindrical or cylindrical member, and the cylindrical length is provided to be the same as the left-right width with respect to the transport direction of the belt conveyor 340. The upper compression roller 440 is rotatably supported, and the outer circumference of the cylinder is rotationally driven so as to have the same speed as the transport speed of the belt conveyor 340. The rotation direction of the upper compression roller 440 is provided so that the lower portion of the upper compression roller 440 is in the same direction as the transport direction.

A plurality of upper protrusions 442 are arranged on the outer peripheral surface of the cylinder of the upper compression roller 440. The upper protrusion 442 is a prismatic member, and is arranged in the longitudinal direction in parallel with the rotation shaft 441, and each of the plurality of upper protrusions 442 arranged is arranged at substantially equal intervals in the rotation direction. Further, the arrangement interval of the upper protrusion 442 in the rotation direction of the upper compression roller 440 is the same as the arrangement interval of the lower protrusion 412 fixed to the lower compression roller 410. Since the upper compression roller 440 and the lower compression roller 410 rotate at the same rotation speed per minute, the moving speeds of the upper protrusion 442 and the lower protrusion 412 can be the same. The upper protrusion 442 of this embodiment is set to be slightly shorter than the length of the cylindrical portion of the upper compression roller 440.

The rotating outer peripheral diameter 443 including the upper protruding portion 442 of the upper compression roller 440 is configured to be substantially the same as the rotating outer peripheral diameter 413 including the lower protruding portion 412 of the lower compression roller 410. The upper compression roller 440 is positioned so that the end surface of the upper protrusion 442 facing the outer side in the radial direction of the rotation outer peripheral diameter 443 is close to the cylindrical surface of the lower compression roller 412 so as to form a gap L1. Further, the height of the lower protrusion 412 so as to provide a gap L2 while the end surface of the lower protrusion 412 of the lower compression roller 410 facing the outer side in the radial direction of the rotation outer peripheral diameter 413 is close to the cylindrical surface of the upper compression roller 440. Is set. It is desirable that the gap L1 and the gap L2 have a distance of half or less of the gap L0 formed by the cylindrical portions of the lower compression roller 410 and the upper compression roller 440. In this embodiment, the gap L1 and the gap L2 are set to have a distance of approximately 40 to 45% of the gap L0.

The surface of the upper protrusion 442 on the rear side in the rotation direction and the surface of the lower protrusion 412 on the front side in the transport direction, or the surface of the upper protrusion 442 on the front side in the rotation direction and the surface of the lower protrusion 412 on the rear side in the transport direction A gap L3 is provided while being as close as possible so as not to interfere with each other. In the embodiment shown in FIG. 4, the surface of the upper protrusion 442 on the rear side in the rotation direction is close to the surface of the lower protrusion 412 on the front side in the transport direction to form a gap L3. It is convenient if the gap L3 is approximately the same distance as the above-mentioned gap L1 or gap L2.

According to the above configuration, the maximum rotation outer peripheral diameters 413 and 443 are arranged so as to overlap each other when viewed from a direction orthogonal to the transport direction shown in FIG. The upper protrusion 442 and the lower protrusion 412 are arranged at the same intervals in the transport direction or the rotation direction, and the upper compression roller 440 and the lower compression roller 410 are rotated at the same rotation speed. Does not interfere.

The secondarily compressed object to be compressed on the upstream side is carried between the upper compression roller 440 and the lower compression roller 410, and then sandwiched between the gap L1 between the upper protrusion 442 and the lower compression roller 410. It is further compressed in the vertical direction. When the upper protrusion 442 and the lower protrusion 412 continue to rotate, the lower protrusion 412 is located immediately after the rotation direction of the upper protrusion 442 and forms a gap L3. The gap L3 compresses the object to be compressed while being bent in the vertical direction orthogonal to the transport direction. That is, the object to be compressed is compressed while making creases in the left-right direction orthogonal to the transport direction.

Further, when the upper protrusion 442 and the lower protrusion 412 continue to move, the compressed object is bent with a crease on the downstream side in the transport direction by being sandwiched between the gap L2 between the lower protrusion 412 and the upper compression roller 440. , Compressed.

Then, by rotating the lower compression roller 410 and the upper compression roller 440, the object to be compressed is sequentially conveyed to the downstream side, and compression in the vertical direction and formation of creases are repeated. The creases of this embodiment are made in a straight line. When the object to be compressed passes through the upper compression roller 440 and the lower compression roller 410, the final compression is completed and the object to be compressed is discharged from the compression unit 4. Multiple creases of the object to be compressed are formed after the final compression is completed.

By forming a linear crease in the final compressed object, the compressed object is prevented from swelling as it tries to return to its original shape after the final compression. A plurality of the creases are formed by the upper protrusions 442 and the lower protrusions 412 at substantially equal intervals in the transport direction while continuously spacing the objects to be compressed in the transport direction. When the object to be compressed after the final compression is viewed from the left and right sides orthogonal to the transport direction, a plurality of creases are formed in a stepped shape.

Since the front and back of the fold are compressed by the gaps L1, L2, and L3, the material to be compressed will be more elastic, and the material to be compressed can be prevented from swelling when it returns to its original position. Further, due to the plurality of creases, the object to be compressed can maintain the compressed state immediately after the final compression even if a time elapses after the final compression. By sandwiching the object to be compressed in the gaps L1 and L2 formed by the upper protrusion 442 or the lower protrusion 412, it can be further compressed in the vertical direction. Further, the gap L3 allows compression and creases in a direction parallel to the transport direction.

By catching the lower part of the object to be compressed, the lower protrusion 412 can continue to convey the object to be compressed in the downstream direction without moving to the upstream side. The upper protrusion 442 can be forcibly pushed between the upper compression roller 440 and the lower compression roller 410 by biting into the upper part of the object to be compressed while rotating. The rotation of the upper compression roller 440 and the lower compression roller 410 further draws the object to be compressed downstream in the transport direction, and the compression work is sequentially performed.

Here, a method of driving the transport unit 3 and the compression unit 4 will be described. The motor 310 is used as a drive source for driving the transport unit 3 and the compression unit 4. The transport unit 3 is driven directly from the motor 310 via a winding transmission mechanism. The compression unit 4 is transmitted and driven in the order of the upper compression roller 440, the second paddle 430, and the first paddle 420 via the lower compression roller 410 starting from the motor 310.

The motor 310 is located below the lower compression roller 410 and rotationally drives the lower compression roller 410 by a transmission mechanism by a chain (not shown). A gear (not shown) is provided at the rotating end of the lower compression roller 410, and meshes with the upper compression roller 440 also having a gear provided at the rotating end. The gear ratios of the lower compression roller 410 and the upper compression roller 440 are set so that the rotation speeds are synchronized. A chain (not shown) is hung on the shaft ends of the upper compression roller 440 and the second paddle 430, and the second paddle 430 and the first paddle 410, respectively, to hold the second paddle 430 and the first paddle 420. It is rotated to drive the entire compression unit 4.

The transport unit 3 is driven by engaging a gear (not shown) at the end of the rotating shaft of the drive roller 313 with a gear at the end of the rotation of the lower compression roller 410. If the meshing of the gears is disengaged, the transmission of the motor 310 is not performed on the transport unit 3. That is, since the drive roller 313, the tension roller 350, and the belt conveyor 340 are in a state of being able to rotate freely, it is possible to perform maintenance independently only for the transport unit 3. Therefore, it is easy to maintain only the transport unit 3 without touching the compression unit 4, and the configuration can be easily handled by the operator.

In the description of the embodiment, the transmission is performed via the lower compression roller, but the maintainability of the transport unit 3 is not impaired even if the drive roller 313 is rotationally driven directly from the motor 310. Further, although the transmission is performed by a gear, the transmission can be performed in the same manner as described above by the winding transmission by a chain or the like.

An operation unit 6 is provided on the upstream side of the belt conveyor 340. The operation unit 6 is provided with a switch operated by an operator to switch the drive of the motor 310, and operates the compression unit 4 and the transport unit 3.

A work method of compressing the object to be compressed by the box-shaped object compression device 1 will be described.
The operator turns on the switch of the operation unit 6 to drive the motor 310 and operate the transport unit 3 and the compression unit 4. The operator places the object to be compressed on the upstream side of the belt conveyor 340. After that, the object to be compressed moves to the downstream side according to the transfer movement of the belt conveyor 340.

When the object to be compressed on the belt conveyor 340 is located below the first paddle 420, it is pushed by the first erection plate 425 by the rotation of the first paddle 420 and is first compressed. The primary compressed object is further moved to the downstream side with the movement of the belt conveyor 340, and is pushed by the second erection plate 435 by the rotation of the second paddle 430 to be secondarily compressed. The objects to be compressed during the primary compression and the secondary compression are moved to the upstream side in the transport direction by the first projecting plate 422 provided on the first paddle 420 and the second projecting plate 432 provided on the second paddle 430. It is smoothly sent to the downstream side without doing anything.

The second-compressed object is further compressed than during the primary compression, moves downstream by the belt conveyor 340, and is rotated by the upper compression roller 440 and the lower compression roller 410 to cause the upper protrusion 442 and the lower portion. The gaps L1, L2, and L3 formed by the protrusions 412 provide final compression while making a plurality of stepped creases. The finally compressed object to be compressed moves to the downstream side of the belt conveyor 340 by the rotation of the upper compression roller 440 and the lower compression roller 410 and is discharged.

The operator only sequentially places the object to be compressed on the belt conveyor 340, the object to be compressed is conveyed to the compression section 4 by the transport section 3, and then the object to be compressed is compressed by the compression section 4. When the work of compressing the object to be compressed is completed, the operator presses the switch of the operation unit 6 again to stop the driving of the transport unit 3 and the compression unit 4.

The object to be finally compressed using the box-shaped object compression device 1 configured as described above has a plurality of stairs creases formed by the upper protrusion 442 and the lower protrusion 412, so that the object to be compressed is to be restored. It can prevent swelling. Further, since the operator only needs to place the object to be compressed on the transport unit 3, the box-shaped object compression device capable of efficiently performing the compression work, efficiently performing the compression, and improving the compression rate is provided. You can. Further, since the configuration of the transport unit 3 is separated from the compression unit 4, it becomes easy to perform maintenance such as adjustment and inspection of only the transport unit 3.

It is also possible to increase or decrease the number of rows of the upper protrusions 442 and the lower protrusions 412 arranged in a plurality of rows. Further, although the upper protrusion 442 and the lower protrusion 412 have been described as prismatic, even if the shape is triangular or semi-cylindrical, it can be sufficiently compressed. Further, the upper protrusion 442 and the lower protrusion 412 arranged in the cylindrical portion have been described as one columnar shape long in the width direction with respect to the transport direction, but they are divided in the middle and spaced apart in the width direction with respect to the transport direction. It may be arranged. Further, in the embodiment, the paddles for performing the primary compression and the secondary compression have been described as having the first paddle 420 and the second paddle 430, but if there is one or more paddles, the paddles to be performed before the final compression are performed in advance. Can be compressed.

The present invention can be applied to a compression device for compressing and reducing the volume of a paper package such as an empty cardboard box and a paper packaging container.

1 Box-shaped object compression device 2 Frame part 3 Transport part 313 Drive roller 340 Belt conveyor 4 Compression part 410 Lower compression roller 412 Lower protrusion 420 First paddle 430 Second paddle 440 Upper compression roller 442 Upper protrusion 443 Rotation outer diameter 6 Operation unit L0 Gap L1 Gap L2 Gap L3 Gap

Claims (5)

A belt conveyor on which the material to be compressed is placed and transported to the downstream side,
A lower compression roller arranged on the downstream side of the belt conveyor and
The compressed object is arranged on the downstream side of the belt conveyor and above the lower compression roller in parallel with the rotation axis of the lower compression roller, and is conveyed by the belt conveyor in cooperation with the lower compression roller. With an upper compression roller for compressing things,
On the rotation outer peripheral surface of the lower compression roller, a plurality of lower protrusions parallel to the rotation axis of the lower compression roller and long in the width direction of the upper compression roller,
On the rotation outer peripheral surface of the upper compression roller, a plurality of upper protrusions parallel to the rotation axis of the upper compression roller and long in the width direction of the upper compression roller,
A box-shaped material compression device characterized by being equipped with. The rotation axis of the lower compression roller is positioned below the rotation axis of the drive roller that drives the belt conveyor, and the rotation axis of the upper compression roller is above the rotation axis of the drive roller that drives the belt conveyor. Positioned,
The box-shaped material compression device according to claim 1. 1 provided above the rotation axis of the upper compression roller and parallel to the rotation axis of the upper compression roller arranged upstream of the rotation axis of the upper compression roller with respect to the transport direction of the belt conveyor. With more than one paddle
The box-shaped material compression device according to claim 1 or 2, further comprising. The rotation speed of the upper compression roller is set to be the same as the rotation speed of the lower compression roller.
The rotational outer diameter of the lower compression roller including the lower protrusion is arranged so that the rotational outer diameter of the upper compression roller including the upper protrusion overlaps with each other.
The box-shaped material compression device according to any one of claims 1 to 3, wherein the box-shaped material compression device is characterized. The gap between the lower protrusion and the upper protrusion that sandwiches the object to be compressed in the rotational direction is the gap formed by the outer peripheral surface of the upper compression roller and the end face of the lower protrusion in the radial direction, or the gap of the lower compression roller. It is narrower than the gap formed by the outer peripheral surface and the end surface of the upper protrusion in the radial direction.
The box-shaped material compression device according to any one of claims 1 to 4, wherein the box-shaped material compression device is characterized.

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