JPH09169447A - Conveyor device for printed corrugate sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform a changeover between the supply of the printing sheet blank to a body manufacturing machine and the discharge thereof on the way with a simple device. SOLUTION: This belt conveyor for printed corrugate sheet is formed of a first belt conveyor device 4 positioned in a corrugate sheet printing machine side and a second belt conveyor device 7 positioned in a working device side of the next process of the printing machine, and the downstream side of the first belt conveyor device 4 is formed of plural parallel turning belts 57, which can be turned in the vertical surface and which can be positioned at the same angle of inclination, and the upstream side of the second belt conveyor device 7 is formed of plural parallel turning belts 87, which can be turned and which can be positioned at the same angle of inclination, and each belt 57 of the first belt conveyor device 4 is arranged so that it can intrude between the belts 87 of the second belt conveyor device 7. In the condition that each turning belt 57 of the downstream side of the first belt conveyor device 4 and each turning belt 87 of the upstream side of the second belt conveyor device 7 are folded downward, corrugate sheet blank, which are discharged from the printing machine, can be stored between the first belt conveyor device 4 and the second belt conveyor device 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor device for connecting between a corrugated board sheet printing machine and a box making machine or between a corrugated board sheet printing machine and a sheet punching machine.

[0002]

2. Description of the Related Art Conventionally, in the manufacture of a corrugated board casing, a corrugated board sheet having a unit size is passed through a corrugated board printing apparatus having functions of printing, ruled lines (creases) and grooving to perform predetermined processing. The processed sheet blank is put into a box-making machine (folder gluer) and glued, bent and joined. Corrugated board printing machines are roughly classified into flexographic printing machines that use quick-drying ink and Prislo printing machines (printer slotter) that use slow-drying ink.

In the flexographic printing machine, the ink must be constantly circulated in order to prevent the ink from solidifying, and the ink supply and recovery device becomes complicated. The printed surface is not glossy and feels cheap. However, since the printed ink dries instantly, there is an advantage that the printing machine can be directly connected to the casing making machine and the line from printing to manufacturing can be shortened.

In the Prislo printing machine, the ink supply device can be simplified. The printed surface is glossy, beautiful and has a high-class feel. However, since it takes about 3 minutes to dry the ink, the printing machine cannot be directly connected to the box making machine, and a conveyor device is provided between the printing machine and the box making machine to increase the drying time. Becomes longer.

The Applicant has previously had the advantage of flexographic and Prislo printing, ie without the need for ink circulation,
A printing machine using a glossy special ink on the printing surface was proposed, but even in this case, it took 10 seconds or more to dry the ink, so that it could not be directly connected to a casing machine like a flexographic printing machine.

[0006]

It is often the case that printing from a corrugated cardboard sheet to manufacturing a box is performed continuously at once in one production line. However, two sheet blanks are joined at two locations to form a box. In the case of a two-piece type that forms a sheet, or when shipping as a printed sheet blank, it cannot be handled if the printing machine and the casing manufacturing machine are directly connected.

Further, when the printing machine and the case making machine are connected by a conveyor device, a conveyor facing the case making machine, a conveyor in a direction away from the case making machine, and a switching device therefor are required. The conveyor becomes extremely complicated, and the conveyor in the direction away from the case making machine is largely deviated in the lateral direction from the range connecting the printing machine and the case making machine, which requires a large space for installing the conveyor device.

According to the present invention, the time required for drying the ink can be gained with a short machine length, and the machine width can be small. Still, the printed sheet blanks are temporarily stocked without being sent to the casing machine. The purpose is to clarify a conveyor device that can be used.

[0009]

The conveyor device of the present invention is located on the first belt conveyor device (4) located on the corrugated cardboard sheet printing machine (1) side and on the processing device (2) side of the next step of the printing machine. The first belt conveyor device (4) and the second belt conveyor device (7) arranged so as to be able to approach and separate from each other, and the downstream side of the first belt conveyor device (4) is rotatable and inclined in a vertical plane. Adjustable multiple parallel loop belts (57) (5
7), and the upstream side of the second belt conveyor device (7) has a plurality of parallel orbiting belts (8
7) and (87), and each belt (57) on the downstream side of the first belt conveyor device (4) is arranged so as to be able to enter between the upstream belts (87) and (87) of the second belt conveyor device (7). And is discharged from the printing machine in a state where the inclination angles of the downstream revolving belt (57) of the first belt conveyor device (4) and the upstream revolving belt (87) of the second belt conveyor device (7) are substantially the same. The corrugated cardboard sheet blank can be delivered to the processing device (2) of the next process via the first belt conveyor device (4) and the second belt conveyor device (7), and each of the downstream side of the first belt conveyor device (4). The orbiting belt (57) faces downward, the second belt conveyor device (7)
In a state in which the upstream-side revolving belts (87) are respectively folded upward or downward, the corrugated cardboard sheet blank discharged from the printing machine is connected to the first belt conveyor device (4) and the second belt conveyor device (7). Can be stored in between.

[0010]

[Operation and effect] From the printing machine, the inclination angles of the downstream revolving belt (57) of the first belt conveyor device (4) and the upstream revolving belt (87) of the second belt conveyor device (7) are substantially the same. The discharged corrugated cardboard sheet blank can be delivered to the casing machine (20) via the first belt conveyor device (4) and the second belt conveyor device (7). The length and conveying speed of the conveyor device (3) are determined so that the ink on the printing surface of the sheet blank dries during the conveyance of the sheet blank by the conveyor device (3).

It should be noted that the sheet blank is not conveyed by the lower surface of the sheet blank being in contact with the belt of the conveyor, but rather by a casing machine.
The sheets are laid down on the (20) side, and are conveyed in an obliquely shifted and overlapped state.In this state, the upper sheet blank does not come into close contact with the printing surface of the sheet blank, so that the ink in the middle of drying is The printed surface is hardly soiled by rubbing against the sheet blank.

The respective circulating belts (57) on the downstream side of the first belt conveyor device (4) face downward, and the second belt conveyor device (7)
In the state in which the upstream revolving belts (87) are folded upward or downward, the sheet blank discharged from the printing machine is fed between the first belt conveyor device (4) and the second belt conveyor device (7). Can be stored in When the printed sheet blank is supplied to the processing device (2) in the next step, for example, the casing machine (20), the casing machine (20) and the second belt conveyor device
It must be stacked on the stocker (21) formed between (7) and the bottom sheet blanks one by one and kicked out.
In this case, the length of the stocker (21) must be adjusted according to the length of the sheet blank in the traveling direction, but in the device of the present invention, the second belt conveyor device (7) can be moved back and forth. Therefore, there is no problem in adjusting the length of the stocker.

When the second belt conveyor device (7) is moved to the upstream side, the upstream belt (87) row of the second belt conveyor device (7) is located downstream of the first belt conveyor device (4). (57) Entering between the rows, the second belt conveyor device
There is no interference between (7) and the first belt conveyor device (4). Only the downstream side of the first belt conveyor device (4) and the upstream side of the second belt conveyor device (7) can be rotated in a vertical plane, and the second belt conveyor device (7) can be moved back and forth. With a simple structure, it is possible to supply the sheet blanks to the casing and temporarily stock the sheets in the conveyor device (3).

The conveyor device (3) has a minimum length necessary to obtain the time required for drying the ink, and the machine width can be stored within the machine width of the printing machine or the case making machine. As described above, the corrugated board sheet printing machine (1) and the casing making machine (20) do not greatly exceed the machine width and do not spread laterally, and the installation space of the production line can be reduced. The conveyor device of the present invention may be used by being installed between a dedicated printing machine that only prints on corrugated cardboard sheets and a rotary or vertical movement sheet punching machine to increase ink drying time. it can.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a series of production lines from printing to casing, which are arranged in order from an upstream side to a downstream side.
Cardboard sheet printing machine (1), conveyor device (3), box making machine
(20) has been deployed. Example corrugated sheet printing machine
(1) has the advantages of flexographic printing and prism printing.
In other words, it is a printing machine that does not require ink circulation and uses a special ink with a glossy printing surface. It also has the function of performing crease (crease) processing and grooving processing on corrugated cardboard sheets of unit size. have. In addition, corrugated board sheet printing machine (1)
Can be used with Punta Slotta, which uses slow-drying ink.

The box making machine (20) is a known device capable of continuously performing gluing, bending and joining operations on a sheet blank that has been subjected to ruled line processing and groove cutting processing.
The conveyor device (3) of the present invention comprises a first belt conveyor device (4) on the printing machine (1) side and a second belt conveyor device (7) on the casing making machine (20) side. Both conveyor devices (4) and (7) of No. 2 are arranged so that they can be moved back and forth and positioned on a common rail (31).

As shown in FIG. 1, both conveyor devices (4) (7)
The conveyor device (3) gently inclines upward from the upstream side to the downstream side in a state in which the distance is maximum. Between the box making machine (20) and the second belt conveyor device (7), there is a stocker (21) for stacking and temporarily storing the corrugated cardboard blanks. Kicker
By kicking out one by one (not shown), the box making machine (20)
Supply to

With the first and second conveyor devices (4) and (7) separated from each other at the maximum distance, the second belt conveyor device (7) and the casing-making machine
(20) corresponds to the minimum length of the corrugated cardboard blank in the traveling direction, and the gap between the corrugated cardboard sheet transfer parts between the conveyor devices (4) and (7) is such that the sheet blank of the minimum size falls. There should be dimensions that allow smooth delivery.
In addition, the stocker (2
2nd belt conveyor device to correspond the length of 1)
When (7) is moved to the sheet printing machine (1) side, the downstream side of the first belt conveyor device (4) and the upstream side of the second belt conveyor device (7) bite into each other so as not to interfere, as described later. meet. In this way, even when the total length of the conveyor device (3) is set to be the shortest, it is possible to increase the time for the ink of the blank to dry while the sheet blank is being conveyed by the conveyor device (3). The length and operating speed of (3) are determined.

The frame (4) of the first belt conveyor device (4)
1) is configured by connecting left and right end plates (42) with a plurality of stays (not shown), and each end plate (42) includes wheels (40) rolling on the rails (31). There is. The wheels (40) are linked to the rotary drive (58). Both end plates (42) on the upstream side of the frame (41)
A main shaft (43) is provided to support (42), and a plurality of main shafts (43) are provided.
In the embodiment, six tilting arms (5) are provided so as to be rotatable so that their tips are slightly tilted upward toward the downstream side. A folding arm (5) is attached to the tip of each tilting arm (5) through a support shaft (51).
0) is rotatably arranged in a vertical plane parallel to the tilting arm (5).

Each supporting shaft (51) has two pulleys (53) and (55) that rotate integrally, and the main shaft (43) has one pulley (52) adjacent to each tilting arm (5). However, one pulley (56) is rotatably arranged at the tip of each folding arm (50), and one pulley (53) of the support shaft (51) and the pulley (52) on the main shaft (43) are provided.
The endless belt (54) is stretched between the two, and the endless belt (57) is stretched between the other pulley (55) on the support shaft (51) and the pulley (56) at the tip of the folding arm (50). Set up. Each pulley (52) on the main shaft (43) is a sprocket that rotates integrally with the pulley (52).
(Not shown).

A rotary drive shaft (45) is provided on the frame (41) in parallel with the main shaft (43), and a sprocket (not shown) provided on the shaft and the sprocket on the main shaft (43) are connected to the chain (4).
Connected in 6). A motor (44) is connected to the rotary drive shaft (45). The rotation of the rotary drive shaft (45) causes the upstream belt (54) and the downstream belt (57) to rotate in the same direction. Each tilting arm (5) and folding arm (50) are pivotally connected by an L-shaped connecting rod (48), and the connecting rod (48) is a cylinder device (49) on the tilting arm (5). Is connected to.

When the piston rod of the cylinder device (49) is projected, the tilting arm (5) and the folding arm (50) are aligned in a straight line, and when the piston rod is retracted, the folding arm (5)
(0) is folded down and folded. That is, the cylinder device (4
By the operation of 9), the belt (57) on the downstream side of the first belt conveyor device (4) is held at the same inclination angle as the belt (54) on the upstream side, or faces downward.

Each tilt arm (5) is connected to the air-hydro unit (47). Air Hydro Unit (47)
As is well known, by converting the air pressure into the hydraulic pressure of the same pressure, constant speed driving can be performed even at the time of start or load fluctuation, and intermediate stop can be performed, similarly to the hydraulic unit. Therefore, the inclination angle of the tilt arm 5 can be set arbitrarily.

The frame (4) of the first belt conveyor device (4)
A front contact plate (6) is provided on the downstream side of (1), and side contact plates (61) (61) are arranged on both end plates (42) (42) of the apparatus. As described later, when the sheet blank is discharged, the upstream end surface and both end surfaces of the sheet can be positioned between the first belt conveyor device (4) and the second belt conveyor device (7). The front contact plate (6) has a downstream belt (5
It is arranged between the descending paths of the belts (57) so as not to interfere with the belts when 7) is folded downward. The distance between the side contact plates (61) (61) can be adjusted according to the width of the sheet blank.

The second belt conveyor device (7) has the above first
Since the structure is similar to the belt conveyor device (4), the explanation will be simple, but contrary to the first belt conveyor device (4), the circulating belt (87) on the upstream side can be rotated downward. . The frame (71) of the second belt conveyor device (7) is provided with wheels (70) moving on the rail (31) and a wheel drive device (88). Two support shafts (73) (74) are arranged in parallel between the end plates (72) (72) of the frame (71) on the upstream side and the downstream side. The support shaft (74) on the downstream side is located slightly higher than the support shaft (73) on the upstream side.

Pulleys (82) (83), each of which has six support shafts (73) (74)
Is installed, and the endless belt (8
4) is installed. Six folding arms (80) are provided on the upstream support shaft (73) so as to freely rotate toward the downstream side, and endless between the pivotal support portion of the arm and the pulleys (85) (86) provided at the tip. The belt (87) is stretched. The pulley (85) of the upstream belt (87) and the pulley (8) of the downstream belt (84) on the upstream support shaft (73).
3) is configured to rotate integrally, and the pulley is linked to the motor (75) via the chain (76) and the rotary drive shaft (78). The operation of the motor (75) causes the upstream belt (8
7) and the belt on the downstream side (84) go around at once.

An air-hydro unit (77) is connected to each of the folding arms (80) so that the inclination angle can be arbitrarily adjusted, and the upstream belt (87) is located directly below the upstream support shaft (73). It can be folded to face. The belts (87) on the upstream side of the second belt conveyor device (7) are located between the belts (57) on the downstream side of the first belt conveyor device (4). Even if (4) and the second belt conveyor device (7) are relatively close to each other, the belt (57) and the belt (8)
7) will not collide.

A rear contact plate (9) is provided on the upstream side of the second belt conveyor device (7). When the sheet blank is discharged between the first belt conveyor device (4) and the second belt conveyor device (7), the rear contact plate (9) contacts the downstream end surface of the sheet blank to position the sheet. The upstream belt (87) is arranged so as not to interfere with the belt when it is folded downward.

Wheel drive device (58) of first belt conveyor device (4), belt rotation motor (44), downstream belt (57) folding cylinder device (49), tilting arm (5) angle adjusting air Hydro unit (47), side contact plates (61) (61) gap adjusting device (not shown), second belt conveyor device (7) wheel drive device (88), belt rotation motor (75) The air-hydro unit (77) for adjusting the angle of the upstream belt (87) is connected to a control device (not shown), and for preventing collision of photoelectric tubes, limit switches, etc. at appropriate places on the conveyor device (3). Detectors have been deployed.

However, when the size of the sheet blank is input to the control device and a command to supply it to the casing machine (20) is given,
The second belt conveyor device (7) is moved to the first belt conveyor device (4) side to a position corresponding to the length of the sheet blank between the second belt conveyor device (7) and the box making machine (20). Second belt conveyor device
When (7) is moved to the upstream side, the belt (87) row of the second belt conveyor device (7) is moved to the first belt conveyor device (4).
The second belt conveyor device (7) and the first belt conveyor device (4) do not interfere with each other by entering between the rows of belts (57).

The air-hydro unit (47) of the first belt conveyor device (4) and the air-hydro unit (77) of the second belt conveyor device (7) are actuated to move the first belt conveyor device (4) to the second belt conveyor device (2). The belt angle is automatically adjusted so that the sheet can be smoothly transferred to the belt conveyor device (7). The cardboard sheet blank discharged from the printing machine,
The ink on the printing surface of the sheet blank dries during the transportation by the conveyor device (3).

When the sheet blank is not supplied to the box making machine (20), the front hitting plate (6) of the first belt conveyor device (4) and the back hitting plate (9) of the second belt conveyor device (7) are The second belt conveyor device (7) moves to a position where the distance corresponds to the length of the sheet blank. Also, the first belt conveyor device
(4) Cylinder device (49) and second belt conveyor device
The air-hydro unit (77) of (7) operates to fold the downstream belt (57) of the first belt conveyor device (4) and the upstream belt (87) of the second belt conveyor device (7) downward. fold.

The corrugated cardboard sheet blank discharged from the printing machine is fed to the upstream belt (5) of the first belt conveyor device (4).
4), it falls between the first belt conveyor device (4) and the second belt conveyor device (7), and the rear contact plate (9) and front contact plate
Positioned by (6) and the side contact plates (61), (61), they are stacked and stacked.

It is also possible to dispose a carriage between the first belt conveyor device (4) and the second belt conveyor device (7) and stack the sheet blanks on the carriage and discharge it. Then, a conveyor can be provided, placed on the conveyor, and discharged. If the front contact plate (6), the rear contact plate (9) and the side contact plate (61) are movable in the direction along the rail (31), there is no obstacle to the lateral discharge of the sheet blank. Even if either one of the front contact plate (6) and the rear contact plate (9) or one of the side contact plates (61) (61) is omitted, the sheet blank will not be largely displaced. .

In FIG. 6, the front contact plate (6) and the rear contact plate (9) are replaced by an L-shaped receiving plate (62) rotatably arranged on the frames (41) (71). Connect the cylinder device (64) to the plate (62),
The support plate (62) is rotated around the fulcrum (63).
The sheet blanks are received by the front and rear receiving plates (62) (62) and are stacked and stocked. The sheet can be discharged by a forklift or the like.

In carrying out the present invention, the belt (87) on the upstream side of the second belt conveyor device (7) is rotated upward about the front support shaft (73) to move the second belt conveyor device (7). It is also possible to secure a sheet blank discharge space between and the first belt conveyor device (4).

At the time of setup change of the corrugated cardboard sheet printing machine (1), if the first belt conveyor device (4) is moved to the second belt conveyor device (7) side, a work space for setup change is created. Can be secured. The present invention is not limited to the configuration of the above embodiment, and various modifications are possible within the scope of the claims.

[Brief description of the drawings]

FIG. 1 is an arrangement side view of a corrugated board box manufacturing line.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of the conveyor device.

FIG. 4 is a plan view of the same.

FIG. 5 is a side view of the conveyor device with the belt folded.

FIG. 6 is an explanatory view of another embodiment of the receiving portion of the discharged sheet blank.

[Explanation of symbols]

 (1) Cardboard sheet printing machine (20) Box making machine (3) Conveyor device (4) First belt conveyor device (57) Downstream belt (7) Second belt conveyor device (87) Belt

Claims (6)

[Claims] 1. A first belt conveyor device (4) located on the corrugated cardboard sheet printing machine (1) side and a first belt conveyor device (4) located on the processing device (2) side of the next step of the printing machine. A plurality of parallel orbiting belts which are configured by a second belt conveyor device (7) arranged so as to be able to approach and separate, and the downstream side of the first belt conveyor device (4) is rotatable in a vertical plane and whose tilt angle can be adjusted. (57) (57), the upstream side of the second belt conveyor device (7) is composed of a plurality of parallel orbiting belts (87) and (87) which are rotatable and whose inclination angle can be adjusted. The downstream side belts (57) of 4) are arranged so as to be able to enter between the upstream side belts (87) (87) of the second belt conveyor device (7) and downstream of the first belt conveyor device (4). A state in which the inclination angles of the side orbiting belt (57) and the upstream side orbiting belt (87) of the second belt conveyor device (7) are substantially the same. The corrugated cardboard sheet blank discharged from the printing machine can be delivered to the processing device (2) of the next process through the first belt conveyor device (4) and the second belt conveyor device (7), and the first belt conveyor device (4) The corrugated sheet discharged from the printing machine in a state in which the downstream revolving belts (57) are folded downward and the upstream revolving belts (87) of the second belt conveyor device (7) are folded upward or downward, respectively. A conveyor device for printed corrugated cardboard sheets, in which blanks can be stored between the first belt conveyor device (4) and the second belt conveyor device (7). 2. The corrugated cardboard sheet printing machine (1) has not only printing but also ruled line (crease) processing and grooving processing. The processing device (2) in the next step is an adhesive for corrugated cardboard sheet blanks. A conveyor device for printed corrugated cardboard sheets, which is a casing machine (20) for coating, bending, and joining. 3. The corrugated cardboard sheet printing machine (1) is a dedicated printing machine, and the processing device (2) in the next step is a sheet corrugated sheet conveyor device. 4. A conveyor device for printed corrugated cardboard sheets according to claim 1, wherein the first belt conveyor device (4) is also movable back and forth. 5. A first belt conveyor device (4) and a second belt conveyor device (4) are provided on at least one of a downstream side of the first belt conveyor device (4) and an upstream side of the second belt conveyor device (7). 7. A printed corrugated board sheet according to any one of claims 1 to 4, further comprising: a contact plate (6) (9) against which the front or rear end face of the corrugated cardboard sheet blank accumulated in a stack with (7) is abutted. Conveyor equipment. 6. A contact plate (61) in which at least one of the downstream side of the first belt conveyor device (4) and the upstream side of the second belt conveyor device (7) is in contact with the side end surface of the corrugated cardboard sheet blank. The conveyor device for printed corrugated cardboard sheets according to claim 1 or 5, further comprising: