JPS632858B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conveyed object alternate reversal device that can be applied to a stacker for a corrugated machine.

In a corrugating machine that makes corrugated sheet A in one conveyance, when laminating single-sided corrugated cardboard B and liner paper C, as shown in Figure 1, glue D containing starch dissolved in water is used.
Since the sheet is applied to the top of the step and bonded by heating, the sheet warps due to uneven absorption of moisture.
In other words, the upward warpage in Figure 2B occurs when the moisture content of the liner on the single-sided corrugated board B side is greater than that of the lower liner C at the time of lamination, and the downward warpage in Figure 2B occurs when Occurs in the opposite case.

However, in the past, these warps could not be completely controlled, so when the corrugated cardboard sheets A were stacked, they would be in the state shown in FIG. 3 (a) or (b). If this condition continues, the load may be distorted during transportation, there may be errors in the subsequent printing process, the casemaking process, or there may be problems with the accuracy of the casemaking process.

Therefore, in order to eliminate these warps, the warps were corrected by alternating reversals as shown in Figure 4 (a) and corrected by manual labor or some machines, as shown in Figure 4 (b), but this required a lot of effort. At the same time, there were other problems, such as the fact that the alternating reversal work could not keep up with the speed of the machine, so the operating speed had to be reduced.

The present invention has been proposed in order to eliminate the above-mentioned conventional drawbacks, and includes a rotating frame having a plurality of conveyed object receiving sections relative to a rotating shaft, and each receiving section is rotated from its predetermined receiving position. At this time, the transported object can freely pass through the center of the rotating frame, and the receiving part that accommodates the transported object can be rotated to reverse the transported object, and the inverted transported object can be further shifted laterally. It is an object of the present invention to provide a device for alternately reversing objects.

The present invention will be explained below with reference to the embodiments shown in the drawings. Figs. 5, 6, and 7 show the schematic structure of the embodiment device of the present invention. First, Fig. 5 shows a sectional view of the rotary frame body, FIG. 6 shows the same plan view, and FIG. 7 shows the intermittent rotation mechanism of the rotating frame. Now, in FIG. 5, the rotating frame 1 has channel-shaped frames 2, 2', one on the left and one on the left, and U-shaped receiving parts 3, 3' are fixed to the frames 2, 2' back to back. ing.

Next, in FIG. 6, both ends of the frames 2, 2' are fixed to rotary disks 4, 5, and shafts 6, 7 are fixed to the outside of the center of both rotary disks 4, 5.
a plurality of receiving parts 3 fixed to the frames 2, 2';
3', one rotating frame 1 is formed.
The rotating frame 1 is rotatably supported at the ends of the shafts 6, 7 by bearings 10, 11 provided on machine frames 8, 9.

A groove as shown in the figure is provided on the outer circumferential surface of the end of the shaft 6, and the shifter 12
The shifter 12 is directly connected to the piston rod 14 of the air cylinder 13. Further, the tip of a piston rod 37 of a locking cylinder 36 is fixed on the machine frame 8 at a position where it can freely enter and exit holes b ₁ , b ₂ , b ₃ , and b ₄ of the rotary disk 4.

A plurality of rollers 18, 18' are fixed in a skewer shape to shafts 19, 19', one on the left and one on the left, and are rotatable together with the shafts 19, 19' by a plurality of brackets 20, 20' and a rotary disk 5. is supported by Also, the shaft 1 passing through the rotary disk 5
Pulleys 21, 21' are fixed to the ends of 9, 19'.

On the other hand, a pulley 22 is rotatably fitted into the shaft 7 at the illustrated position, and a pulley 24 is attached to the shaft end of a motor 23 fixed to the machine frame 9. Furthermore, the reception section 3,
3 and 3', 3', conveyors 25b and 25c shown by chain lines are arranged so as to intertwine with each other. In addition, the machine frames 8 and 9 and the frame 35 of the conveyor 25c are provided with phototube switches 34, 34, 34', one on each side.
34' is fixed in the position shown.

Next, in FIG. 7, the frames 8 and 9 are the wheels 3
8, 38'.
Reference numeral 17 denotes an L-shaped arm, which is rotatably fitted into the shaft 6, and one end of which is pivotally connected to the tip of a piston rod 27 by a pin 26. Reference numeral 28 denotes an air cylinder, which is supported so as to be able to freely swing around a fulcrum 29 provided on the machine frame 8.

In addition, a hole a is drilled at the other end of the arm 17, and a sixth
As shown in the figure, a connecting cylinder 15 is fixed to an arm 17, and when the piston rod 16 is extended, the tip of the piston rod 16 is connected to the hole a and the hole b ₁ or b ₂ , b ₃ , b of the rotary disk 4. It is now possible to penetrate ₄ at the same time. Further, the holes b ₁ , b ₂ , b ₃ , b ₄ and
Operating pieces 30a, 30b provided on the side surface of the rotary disk 4,
30c and 30d are arranged so as to maintain an angle of 45 degrees, respectively, and one proximity switch 31 shown by a dotted line is fixed on the rotation locus of the actuating pieces 30a to 30d on the side surface of the machine frame 8. ing.

Next, to explain the operation, FIG. 8A shows a state in which a corrugated cardboard batch sheet ○I sent from the left by the conveyors 25a and 25b is entering the receiving section 3, and FIG. After the batch sheet ○a completely enters the receiving part 3, the rotary frame 1 is rotated 90 degrees with the frame center _o1 as a fulcrum and stops, and during that time the batch sheet ○a is inserted into the center of the rotary frame 1. This shows a state where the space is being moved to the right by the drive of rollers 18', 18'.

Further, in FIG. 8C, the batch sheet ○B passes through the center of the rotating frame 1 and is advanced to the subsequent process, and the batch sheet ○B is moved to a horizontal position by further rotation of the rotating frame 1 by 90 degrees clockwise. The batch sheet ○i is turned over and transferred to conveyor 25c.
This shows the state immediately before being placed on top of the sheet and sent in the direction of the arrow following the batch sheet ○ro.

Now, in FIG. 6, when the batch sheets ○I to ○nu are received in the receiving part 3 by the conveyor 25b, the phototube switches 34, 34 are actuated, and the connecting cylinder 15 is actuated to release the piston rod 16.
, until its tip passes through holes a and b,
The rotary disk 4 and the arm 17 are connected.

When the air cylinder 28 shown in FIG. 7 is operated to extend the piston rod 27, the arm 17
is rotated clockwise via the pin 26 about the frame center o ₁ as a fulcrum, and the rotary disk 4 is also rotated clockwise via the piston rod 16 about the frame center o ₁ as a fulcrum. At this time, when the actuating piece 30c is advanced together with the rotary disk 4 and reaches the position where the proximity switch 31 is activated, the operation of the air cylinder 28 is stopped, the piston rod 27 is stopped from being extended, and the rotary disk 4 is rotated 90 degrees clockwise. It will stop at the position where it rotates.

Therefore, the receiving portion 3 of the rotary frame 1 is displaced from the horizontal direction to the vertical direction as shown in FIG. In this state, when the air cylinder 13 shown in FIG. 6 is operated in the direction in which the piston rod 14 extends, the shaft 6
, and the rotating frame 1 together with the frames 8 and 9 is shifted in the direction of the solid line arrow. At this time, the center opening of the rotating frame 1 is displaced horizontally as shown in FIG.
Conveyance is continued by 18', passing through the space in the center of the rotating frame 1, transferred to the conveyor 25c, and conveyed to the subsequent process.

Next, the batch sheet ○ro is connected to the phototube switch 34',
When the position 34' is reached, the locking cylinder 3
The piston rod 37 of No. 6 operates in the extending direction, and its tip passes through the hole b of the rotary disk 4, thereby fixing the rotary disk 4 to the machine frame 8.

Next, the connecting cylinder 15 shown in FIG. 6 is operated in the direction in which the piston rod 16 is retracted, and the engagement between the piston rod 16 and the rotary disk 4 is released. Subsequently, when the air cylinder 28 in FIG. 7 is operated in the direction in which the piston rod 27 is retracted, the arm 17 returns to the position shown by the solid line in the figure. Here, when the connecting cylinder 15 shown in FIG. 6 is operated again in the direction in which its piston rod 16 extends, the rotary disk 4 and the arm 17
are reconnected by engagement of the piston rod 16, hole a, and hole b.

Next, the locking cylinder 36 is actuated in the direction in which the piston rod 37 is retracted to disengage the locking cylinder 36 from the hole b, thereby releasing the rotary disk 4 from the machine frame 8. If the above action is repeated in this state,
The rotary frame 1 is further rotated by 90 degrees, and the batch sheet ○a accommodated in the receiving part 3 is reversed and lowered onto the conveyor 25c, and is conveyed to the subsequent process following the batch sheet ○ro as shown in FIG. 8C. be done.

Next, when the receiving section 3' is receiving the next batch sheet ○, the air cylinder 13 shown in FIG.
When the piston rod 14 is retracted by operating the
The shaft 6 is pulled back by the shifter 12, and the entire rotary frame 1 is shifted in the direction indicated by the dotted arrow, returning to the solid line position in FIG. Through the above operations, the reversed batch sheet ○I is shifted as shown in FIG. 8D.

Thereafter, by repeating the above-described operation, the batch sheets are inverted one by one and shifted slightly in a direction perpendicular to the flow, and are continuously conveyed to the subsequent process and stacked as shown in FIG. 9.

In the entire process above, the roller 1 shown in FIG.
In the 8, 18' group, the rotation of the motor 23 is caused by the pulley 24,
It is constantly driven by being transmitted to the shafts 19, 19' via the belt 32, pulley 22, belt 33, and pulleys 21, 21'.

Since the present invention is constructed as described above in detail, it is possible to alternately reverse the continuously fed corrugated batch sheets, which are conveyed objects, at high speed without reducing the operating speed of the corrugating machine. Therefore, it is possible to efficiently stack the bent sheets as they are and correct the warpage of the sheets.

Furthermore, since the reversed batch sheets are simultaneously shifted slightly in the lateral direction, it is possible to easily distinguish between reversed batch sheets and non-reversed batch sheets, thereby avoiding problems in the subsequent process (printing process).

Although the above description has been made regarding an embodiment in which the objects to be reversed are limited to corrugated cardboard batch sheets, similar effects can be expected for objects that are continuously conveyed in one conveyance. Further, in the embodiment described above, an air cylinder is used as a means for intermittent rotation of the rotating frame, but other means such as a DC motor drive or a Geneva gear mechanism may also be used.
Further, although there are two conveyed object receiving sections in the above embodiment, it is also possible to increase this number.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the manufacturing state of a corrugated board sheet, Fig. 2 A and B are perspective views explaining upward and downward curvature of the corrugated cardboard sheet, Fig. 3 A and B, and Fig. 4 A and B are corrugated cardboard sheets. Explanatory diagrams showing various cases of stacked sheets, FIG. 5 is a sectional view taken from A to A in FIG. 6 showing an embodiment of the present invention, and FIG. 6 is an alternate reversal of conveyed objects showing an embodiment of the present invention. 7 is a sectional view taken from B to B in FIG. 6, FIG.
The figure is a perspective view showing a stacked state of conveyed objects that have been alternately reversed. Explanation of the main parts of the figure: 1...rotating frame body, 3.
3'...Receiving section, 4.5...Rotary disk, 6.7...
Shaft (rotating shaft), 8.9... Frame, 12
...Shifter, 13...Air cylinder, 14...Piston rod, 15...Connection cylinder (intermittent drive mechanism), 16...Piston rod (intermittent drive mechanism), 17...Arm (intermittent drive mechanism), 18.1
8'...Roller, 25b...Conveyor (carry-in device), 25c...Conveyor (carry-out device), 28...
Air cylinder (intermittent drive mechanism).

Claims (1)

[Claims] 1 A rotary frame body that has a rotary disk that can intermittently rotate in one direction at predetermined angles around a rotation axis and can move slightly in a direction perpendicular to the transport direction of the transported object, and a space in the center that allows the transported object to pass through. a plurality of conveyed object receiving sections provided on the rotating frame radially with respect to the rotation axis; an intermittent drive mechanism that intermittently rotates the rotating frame so that the receiving sections rotate from a predetermined receiving position; , a plurality of rollers that are disposed in the space of the receiving section and guide and move the conveyed object from the receiving side to the unloading side through the same space; a horizontal receiving section on the receiving side or a carry-in conveyor that carries the conveyed object into the space; Device,
An apparatus for alternately reversing conveyed objects, comprising: a horizontal receiving section on the unloading side; or an unloading device for unloading the conveyed objects from the space.