JPS6337017B2 - - Google Patents

Description

Detailed Description of the Invention "Field of Industrial Application" The present invention relates to a conveyor for transporting plate-like sheets, and more specifically, it relates to a conveyor for transporting plate-like sheets, and more specifically, a conveyor for transporting plate-like sheets cut to a fixed size and sequentially falling onto the conveyor. This invention relates to a conveyor for conveying plate-shaped sheets that can stack sheets in an orderly manner by eliminating the disturbance in their posture when the sheets fall, in a conveyor that conveys the resulting sheet stack to the next process. be.

"Prior Art and its Problems" Generally, in an integrated production line for plate-like sheets, such as corrugated sheets, the manufactured long corrugated sheets are cut into plate-like sheets of predetermined dimensions using slitters and rotary cutters near the final process. It is cut and transported to the next process, which involves slotting and other creasing (horizontal creasing) processing. In this case, the corrugated cardboard sheets cut to a fixed size are carried and transported by a belt conveyor, and are sequentially dropped onto a transport conveyor, generally consisting of a roller conveyor, to be carried out as a predetermined number of stacked sheets. However, when the sheets are dropped and released, their postures may be disturbed due to the influence of air resistance, so it is actually difficult to stack the sheets in an orderly manner. For example, as shown in FIG. 1, a plate-shaped corrugated sheet 10 cut into a predetermined size is carried on a belt conveyor 12 and transported, and a conveyor 14 located diagonally below the tip of the belt conveyor 12 is used.
When the roller member 18 of the conveyor 14 and the belt conveyor 12 are stacked, even if the receiving position of the stopper 16 that slides back and forth is adjusted,
Since there is a considerable head difference h between the open end of
The seat 10 is affected by the air resistance mentioned above,
Therefore, the lower the seat, the more disturbed the posture will be.
This means that they cannot be layered in an orderly manner. (In the case of Figure 1,
Of course, the roller member 18 stops rotating when the sheet 10 is dropped and discharged.) Furthermore, as a transport conveyor, a structure shown in FIGS. 2 and 3 has been separately proposed. This is constructed by disposing one elongated crosspiece member 20 between each of the roller members 18 disposed in large numbers on the conveyor 14, and allowing these crosspiece members 20 to be raised and lowered by an appropriate lifting mechanism. As shown in FIG. 3, when the crosspiece member 20 rises and is at level _l1 , it is located above the upper surface level _l2 of the roller member 18, and when it descends and is at level _l3 , it is located at the upper surface level. It is positioned below l ₂ . and,
When receiving the falling sheet 10, the slatted edge-shaped crosspiece member 20 is raised to level _l1 , and the sheet 1
When the stacking of sheets 0 is completed, the crosspiece member 20 is lowered to level _l3 , and the sheet stack is carried out laterally by the rotation of the roller member 18. This is different from the conveyor shown in FIG. 1 because the roller member 18 can be kept rotating at all times.
Although complicated starting and stopping operations of the roller member 18 are not required, since there is still a considerable head difference h between the crosspiece member 20 and the open end of the belt conveyor 12, the posture of the sheet 10 due to air resistance may be affected. Concerns about disturbances remain.

Therefore, in order to eliminate the influence of air resistance when the sheet 10 is dropped and discharged, a conveyor having the structure shown in FIGS. 4 and 5 was separately proposed. This is achieved by arranging a large number of frame-shaped frame members 22 between each rotating roller member 18 of the conveyor 14, and connecting the frame members 22 to appropriate elevating members 24 as shown in the figure. , belt conveyor 12
The frame member 22 on the side close to the open end of the frame member 22 is configured to be able to tilt and move up and down. In this conveyor 14, when the sheet 10 is supplied in a falling manner,
The frame member 22 is tilted upward and the belt conveyor 12
Since the sheet approaches close to the open end of the sheet, there is almost no head difference, and sheets can be piled up in an orderly manner without being affected by air resistance. However, in this conveyor 14, the following inconvenience occurs when the stacking of the sheets 10 is finished in an orderly manner and the frame member 22 is tilted and lowered. That is, the sheet 10 is generally supported on rollers 26 which are supported in large numbers on the side surfaces of the crosspiece frame member 22, and the crosspiece frame member 22 is gradually tilted down as shown in FIG. The sheet stack is transferred onto the roller member 18 by settling below the upper surface level of the roller member 18, but since the crosspiece frame member 22 is tilted about the shaft 28, The entire bottom surface of the sheet stack does not come into contact with the top surface of the roller member 18 at the same time, but comes into contact with the roller member 18 from the bottom surface side of the sheet 10 held by the stopper 16. At this time, since the roller member 18 is constantly rotating, twisting stress is applied to the bottom edge of the stacked sheets 10, and as a result, the posture of the stack may collapse, or the stack may not move in the direction of transport by the roller member 18. It has been pointed out that there is an inconvenience in that the whole part is biased, which adversely affects smooth processing in the next process.

``Object of the Invention'' In view of the various drawbacks inherent in the prior art plate-shaped sheet conveyor described above, the present invention eliminates the disturbance of the posture when the sheets are dropped and released, and stacks the sheets in an orderly manner. It is an object of the present invention to provide a transport conveyor configured such that the entire bottom surface of a sheet stack comes into contact with a rotating roller member at the same time, so that the sheet stack does not deviate in the transport direction.

"Means for Solving the Problem" In order to achieve this object, the present invention includes a plurality of roller members that are rotatably arranged at predetermined intervals, and crosspiece members that are alternately arranged adjacent to the roller members. In a conveyor for transporting plate-shaped sheets, in which a large number of crosspiece members are arranged, and the crosspiece members are configured to be able to rise and fall horizontally upward and downward from the upper surface level of the roller member, adjacent to the large number of crosspiece members. A large number of auxiliary crosspiece members are arranged alternately, and the auxiliary crosspiece members are configured to be able to tilt upward and downward from the upper surface level of the crosspiece members as a reference, and to move the horizontal lowering of the crosspiece members and the tilting of the auxiliary crosspiece members. When lowering the auxiliary crosspiece, the tilting lowering speed of the auxiliary crosspiece is set higher than the horizontal downward speed of the crosspiece, so that after the auxiliary crosspiece has tilted downward below the upper surface level of the crosspiece, the corresponding crosspiece is lowered. The present invention is characterized in that the member is configured to be able to horizontally descend below the level of the upper surface of the roller member.

Further, it is preferable that each of the auxiliary beam members is configured to be rotatably pivoted to each beam member at one end thereof.

Further, as a driving means for horizontally raising and lowering the crosspiece member and tilting and raising and lowering the auxiliary crosspiece member, a combination of a link mechanism connected to the crosspiece member and the auxiliary crosspiece member, respectively, and a fluid pressure cylinder connected to this link mechanism is used. is recommended. Also, instead of this driving means,
Even if fluid pressure cylinders are shared and connected to the crosspiece member and the auxiliary crosspiece member, and the lowering speed of the hydraulic cylinder connected to the auxiliary crosspiece member is set to be higher than the lowering speed of the fluid pressure cylinder connected to the crosspiece member, Similar effects can be obtained.

``Example'' Next, a conveyor for conveying a plate-like sheet according to the present invention will be described in detail below with reference to the accompanying drawings, citing preferred examples. It should be noted that the same reference numerals will be used for the members used in the conveyor and already shown in FIGS. 1 to 5 to simplify the explanation.

6 to 8 show a preferred embodiment of the plate-like sheet conveyor according to the present invention, and FIG. 9 shows another embodiment of the present invention. Moreover, although a double-sided corrugated cardboard sheet is illustrated as a plate-like sheet to be conveyed, it is needless to say that the present invention is not limited to this.

Figure 6 shows belt conveyor 1 placed in the middle of a line that consistently and continuously produces corrugated sheets.
2 and plate-shaped sheet conveyor 1 according to the present invention
4 is shown in a perspective view. That is, upstream of the belt conveyor 12, the produced long corrugated cardboard sheet is cut into predetermined dimensions (three in the illustrated embodiment) and cut into regular shapes using a slitter and a rotary cutter (both not shown). Platy sheet 10
As shown in the figure, the materials are conveyed on the belt conveyor 12 in the form of three rows of shingling.

A conveyor 14 according to the present invention is arranged diagonally below the tip of the belt conveyor 12. This conveyor 14 has a rectangular horizontal frame 30 with a large number of roller members 18 rotatably arranged at predetermined intervals, and these roller members 18 are driven by an appropriate rotational drive source and each roller member 18. A sprocket and a chain are coaxially arranged to allow rotation in the same direction (this rotational drive mechanism is omitted to simplify the drawing and facilitate understanding). Adjacent to each roller member 18,
Crosspiece members 32 made of elongated plate-like pieces are arranged alternately at predetermined intervals, and the crosspiece members 32, which have a slatted edge shape as a whole, are arranged at a height higher than the level of the horizontal upper surface of the roller member 18 as a reference. It is configured to be able to move up and down horizontally. That is, as shown in FIGS. 6 to 8, each crosspiece member 3
2 are integrally formed with support tongues 34, 34 which project downwardly at a predetermined distance apart from each other at the lower end edge in the longitudinal direction. It is loosely attached via a pin 40. The bell cranks 36 and 38 are rotatably supported at their bent portions by fixed shafts 42 and 42, respectively, and the other ends of the bell cranks are connected to both ends of a common connecting rod 44, respectively.
46, and these bell cranks 3
6, 38 and the connecting rod 44 constitute a link mechanism as a whole. In addition, the frame 30 is attached to the upright support 48
A hydraulic cylinder is mounted on a horizontal pedestal 50 supported by a
Preferably, a double-acting pneumatic cylinder 52 is pivotally mounted via a clevis 54, and this pneumatic cylinder 52
The tip of the piston rod 56 is pivoted to one arm of the bell crank 38 by a shaft pin 58. Therefore, when the pneumatic cylinder 52 is energized to retract the piston rod 56 and the link mechanism is operated, the crosspiece member 32 rises horizontally above the level of the upper surface of the roller member 18 (FIG. 7).
Further, when the pneumatic cylinder 52 is reversely biased, the piston rod 56 is extended and the crosspiece member 32 is horizontally lowered below the upper surface level of the roller member 18 (the eighth
(Figure).

Further, in the present invention, an auxiliary bar member 60 is disposed adjacent to the bar member 32 so as to be tiltable and vertically movable. The auxiliary crosspiece member 60 is composed of a plate-like piece that has substantially the same standard as the crosspiece member 32 and is shorter than the crosspiece member 32, and as shown in FIG. It is pivotally connected via the. Further, the bell crank 38 is connected to a connecting rod 44.
The arm that is pivoted to the
, and will be designated by the reference number 64)
As shown in the figure, the arm on the opposite side is bifurcated into a first arm 66 and a second arm 68, and the first arm 66 is provided with the crosspiece member 3 as described above.
The second support tongue piece 34 is pivotally attached via a shaft pin 40, and the tip of the second arm 68 and the other end of the auxiliary beam member 60 are connected via a support rod 70.
In this embodiment, the upper end of the support rod 70 is articulated to the lower end edge of the auxiliary beam member 60 by, for example, a ball joint, and the lower end of the support rod is connected to a long hole 72 formed at the tip of the second arm 68. It is inserted into the holder and is in a loose state. In this case, bell crank 38
The angles α and β formed by the first arm 66 and the second arm 68 with respect to the drive arm 64 are such that α>β as shown in FIG. 7, and the length a of the first arm and the length a of the second arm are The relationship with length b is set in advance so that a<b. With this configuration, the first arm 6 of the bell crank 38
6 and the tip of the second arm 68 are ensured such that the tip of the second arm 68 is always greater than the tip of the first arm 66, and thereby the auxiliary beam is moved as described later. The tilting downward speed of the member 60 is set to be greater than the horizontal downward speed of the crosspiece member 32. In addition, in FIGS. 6 to 8, reference numeral 16 indicates a stopper,
This can be adjusted forward and backward along the roller member 18 according to the length of the plate-like sheet 10 that is dropped and supplied onto the conveyor 14, and also has the reference numeral 7
4 are arranged at a distance from the tip of the belt conveyor 12,
It also shows a delivery roller that rotates at a circumferential speed that is synchronized with this belt conveyor.

Next, the operation of the plate-shaped sheet conveyor according to the preferred embodiment of the present invention configured as described above will be explained. In use, this conveyor 14
is disposed diagonally below the open end of the belt conveyor 12, with the open end of the auxiliary crosspiece member 60 facing toward the belt conveyor 12 as shown in FIGS. 6 and 7. The auxiliary beam member 60 is tilted and raised to wait for the plate-like sheet 10 to be dropped and supplied. That is, the double-acting pneumatic cylinder 52 is energized to retract the piston rod 56 into the cylinder tube, and the bell crank 36,
38 and the connecting rod 44, the crosspiece member 32 rises horizontally and projects above the upper surface level of the roller member 18 in the shape of a slatted edge, as described above. leading to. At this time, the upward movement distance of the second arm 68 in the bell crank 38 is greater than the upward movement distance of the first arm 66, so that the auxiliary crosspiece member 60 is moved to the level of the upper surface of the crosspiece member 32, as shown in FIG. It is tilted upward and faces the belt conveyor 12 (and the delivery roller 74 in the illustrated embodiment).

In this state, the corrugated cardboard sheets 10 carried in a shingling manner on the belt conveyor 12 are conveyed one after another, and are dropped and discharged onto the conveyor 14 in a slightly oblique position via the delivery rollers 74. At this time, above the crosspiece member 32 of the conveyor 14,
As mentioned above, since the auxiliary crosspiece member 60 is in an inclined state and is waiting to protrude, the fallen corrugated cardboard sheet 1
0 lands on the auxiliary crosspiece member 60 without being affected by air resistance due to the drop, and is stacked one after another in an orderly manner. When a predetermined number of corrugated cardboard sheets 10 have been stacked, a signal is sent to a switching valve (not shown) of the pneumatic cylinder 52, and the pneumatic cylinder 52 is reversely biased. This causes the piston rod 56 to extend from the cylinder tube, causing the linkage to reversely actuate the crosspiece 3.
The horizontal lowering of No. 2 and the tilting lowering of the auxiliary beam member 60 are started at the same time. At this time, as described above, the angle α formed by the first arm 66 with respect to the drive arm 64 of the bell crank 38 is
8 is larger than the angle β formed by the first arm 6
Since the length a of the second arm 68 is set smaller than the length b of the second arm 68, the tilting descending speed and distance of the auxiliary bar member 60 are greater than the horizontal descending speed and distance of the auxiliary bar member 32. The auxiliary crosspiece member 60 on which the corrugated cardboard sheets 10 are stacked is the crosspiece member 32.
This means that the vehicle will be tilted down quickly. Therefore, the stack of corrugated cardboard sheets 10 is smoothly transferred from the auxiliary crosspiece member 60 to the crosspiece member 32, and since the crosspiece member 32 continues to descend horizontally during this time, the crosspiece member 32 is finally transferred. The upper surface level is lower than the upper surface level of the roller member 18,
The sheet stack is further transferred onto the roller member 18 while maintaining the horizontal state. In other words, the bottom surface of the corrugated cardboard sheet 10 at the bottom of the sheet stack lands uniformly on the top surface of the roller member 10, so that the bottom surface of the corrugated cardboard sheet 10 located at the lowest part of the sheet stack lands uniformly on the top surface of the roller member 10, so that the bottom surface of the corrugated paperboard sheet 10 located at the lowest part of the sheet stack lands uniformly on the top surface of the roller member 10. , the posture will not be deviated from the delivery direction due to twisting. In addition,
Since the roller member 18 is constantly rotating, the sheet stack is conveyed in a direction perpendicular to the direction of conveyance by the belt conveyor 12 at the same time as it lands. When this conveyance is completed, the pneumatic cylinder 52 is energized again to provide assistance. Tilt raising of the crosspiece member 60 and crosspiece member 32
horizontal rise is started, and the next corrugated sheet 10
This cycle is then repeated. In the present invention, in the descending stroke, although the auxiliary crosspiece member 60 starts descending in synchronization with the crosspiece member 32, the former descends faster than the latter and the crosspiece member 32
2, and then the crosspiece member 32
The timing at which the bell crank 38 descends from the upper surface level of the roller member 18 is important, and this timing is set to an optimum value by the shape design of the bell crank 38. Further, in this embodiment, one bell crank 38 connected to the crosspiece member 32 and the auxiliary crosspiece member 60 is shared, but bell cranks with different arm angles and arm dimensions are prepared. Of course, the beam member 32 and the auxiliary beam member 60 may be made to share the responsibility exclusively.

Next, FIG. 9 schematically shows another embodiment of the conveyor according to the present invention. This is achieved by separately providing a fluid pressure cylinder 76 for raising and lowering the crosspiece member 32 horizontally and a fluid pressure cylinder 78 for tilting and raising and lowering the auxiliary crosspiece member 60, and operating both cylinders synchronously and driving the auxiliary crosspiece member 60. The retraction speed and amount of movement of the fluid pressure cylinder 78, which shares the role of driving the cross member 32, are set to be greater than the retraction speed and amount of movement of the fluid pressure cylinder 76, which takes part in driving the crosspiece member 32, thereby achieving the same effect. is achieved.

"Effects of the Invention" As described above, in the present invention, when receiving a falling plate-like sheet, the auxiliary crosspiece member is tilted upward to approach the open end of the belt conveyor, thereby avoiding the influence of air resistance due to the head difference. In addition to making it possible to stack a predetermined number of sheets in an orderly manner, the stacked sheets can be transferred horizontally onto the roller member, so the sheet stack will not be biased in the conveying direction, and therefore the next Smooth processing in the process is achieved. Moreover, since the drive mechanism for implementing the present invention is relatively simple, it is easy to manufacture, and the manufacturing cost is also low, which is a secondary advantage.

The conveyor for transporting plate-shaped sheets according to the present invention has been described in detail by taking a corrugated board sheet production line as an example. However, the present invention also includes cutting a plurality of plate-shaped sheets, continuously discharging them, and aligning and stacking them. It is of course applicable to a wide variety of conveyors for conveying objects and materials, and is not limited to the illustrated embodiment, but may be modified within the spirit of the invention.

[Brief explanation of the drawing]

FIG. 1 is a perspective view schematically showing a conveyor for conveying plate-like sheets according to the prior art, FIG. 2 is a perspective view schematically showing another conveyor for conveying plate-like sheets according to the prior art, and FIG. 2 is a schematic sectional view taken along the line ``-'' in FIG. 2, FIG. 4 is a perspective view schematically showing another conveyor for conveying plate-shaped sheets according to the prior art, and FIG. 5 is a schematic sectional view taken along the line ``-'' in FIG. 4. FIG. 6 is a partially cutaway perspective view of an embodiment of the plate-shaped sheet conveyor according to the present invention, and FIG. 7 is a partially cutaway view of the auxiliary beam member and the raised state of the beam member of the conveyor shown in FIG. 8 is a partially cutaway side view showing the auxiliary crosspiece member of the conveyor shown in FIG. 6 and the lowered state of the crosspiece member; FIG. 9 is a side view showing another conveyor for plate-shaped sheets according to the present invention; FIG. 2 is a partially cutaway side view schematically illustrating an embodiment. 10...Plate sheet (cardboard sheet), 12...
Belt conveyor, 14... Conveyance conveyor, 16... Stopper, 18... Roller member, 20... Crosspiece member, 22
... Crosspiece frame member, 24 ... Lifting member, 26 ... Roller, 2
8... Shaft, 30... Frame, 32... Cross member, 34... Supporting tongue piece, 36, 38... Bell crank, 40... Shaft pin, 42... Fixed shaft, 44... Connecting rod, 46... Connecting rod, 48... Support column , 50... Pedestal, 52... Fluid pressure cylinder (pneumatic cylinder), 54... Clevis, 56
...Piston rod, 60...Auxiliary beam member, 62...Axis pin, 64...Drive arm, 66...First arm, 6
8...Second arm, 70...Support rod, 72...Long hole, 7
4... Delivery roller, 76, 78... Fluid pressure cylinder.

Claims (1)

[Scope of Claims] 1. A large number of roller members 18 are rotatably arranged at predetermined intervals, and the roller members 18
A large number of crosspiece members 32 are arranged adjacent to and alternately, and the crosspiece members 32 are movable horizontally upward and downward from the upper surface level of the roller member 18 as a reference. In the conveyor, a large number of auxiliary bar members 60 are alternately arranged adjacent to the large number of bar members 32, and the auxiliary bar members 60 are tilted upward and downward from the upper surface level of the bar member 32 as a reference. When the crosspiece member 32 is horizontally lowered and the auxiliary crosspiece member 60 is tilted and lowered, the auxiliary crosspiece member 60
The tilting downward speed of the crosspiece member 32 is set higher than the horizontal downward speed of the crosspiece member 32, so that after the auxiliary crosspiece member 60 is tilted downward below the upper surface level of the crosspiece member 32, the crosspiece member 32 moves to the roller member 18. 1. A conveyor for conveying plate-shaped sheets, characterized in that the conveyor is configured to be able to descend horizontally below the upper surface level of the sheet. 2 The auxiliary crosspiece member 60 has one end connected to the crosspiece member 32.
A conveyor for conveying a plate-shaped sheet according to claim 1, which is rotatably attached to the conveyor. 3 The horizontal elevation of the bar member 32 and the tilting elevation of the auxiliary bar member 60 are performed by this bar member 32 and the auxiliary bar member 60.
Link mechanisms 36, 38, 44, 7 connected to
A conveyor for transporting a plate-shaped sheet according to claim 1 or 2, which is operated by a hydraulic cylinder 52 that urges the link mechanisms 36, 38, 44, and 70. 4 The horizontal elevation of the bar member 32 and the tilting elevation of the auxiliary bar member 60 are performed by the bar member 32 and the auxiliary bar member 60.
A conveyor for conveying a plate-shaped sheet according to claim 1 or 2, which is carried out by fluid pressure cylinders 76 and 78, which are respectively connected to.